/* GTK - The GIMP Toolkit * gtktextview.c Copyright (C) 2000 Red Hat, Inc. * * This library is free software; you can redistribute it and/or * modify it under the terms of the GNU Lesser General Public * License as published by the Free Software Foundation; either * version 2 of the License, or (at your option) any later version. * * This library is distributed in the hope that it will be useful, * but WITHOUT ANY WARRANTY; without even the implied warranty of * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU * Lesser General Public License for more details. * * You should have received a copy of the GNU Lesser General Public * License along with this library; if not, write to the * Free Software Foundation, Inc., 59 Temple Place - Suite 330, * Boston, MA 02111-1307, USA. */ /* * Modified by the GTK+ Team and others 1997-2000. See the AUTHORS * file for a list of people on the GTK+ Team. See the ChangeLog * files for a list of changes. These files are distributed with * GTK+ at ftp://ftp.gtk.org/pub/gtk/. */ #include #include "gtkbindings.h" #include "gtkdnd.h" #include "gtkintl.h" #include "gtkmain.h" #include "gtkmenu.h" #include "gtkmenuitem.h" #include "gtksignal.h" #include "gtktext.h" #include "gtktextdisplay.h" #include "gtktextview.h" #include "gtkimmulticontext.h" #include "gdk/gdkkeysyms.h" #include #define FOCUS_EDGE_WIDTH 1 #define DRAG_THRESHOLD 8 #define SCREEN_WIDTH(widget) text_window_get_width (GTK_TEXT_VIEW (widget)->text_window) #define SCREEN_HEIGHT(widget) text_window_get_height (GTK_TEXT_VIEW (widget)->text_window) enum { MOVE_CURSOR, SET_ANCHOR, INSERT_AT_CURSOR, DELETE_FROM_CURSOR, CUT_CLIPBOARD, COPY_CLIPBOARD, PASTE_CLIPBOARD, TOGGLE_OVERWRITE, SET_SCROLL_ADJUSTMENTS, LAST_SIGNAL }; enum { ARG_0, ARG_HEIGHT_LINES, ARG_WIDTH_COLUMNS, ARG_PIXELS_ABOVE_LINES, ARG_PIXELS_BELOW_LINES, ARG_PIXELS_INSIDE_WRAP, ARG_EDITABLE, ARG_WRAP_MODE, ARG_JUSTIFY, ARG_LEFT_MARGIN, ARG_RIGHT_MARGIN, ARG_INDENT, ARG_TABS, LAST_ARG }; static void gtk_text_view_init (GtkTextView *text_view); static void gtk_text_view_class_init (GtkTextViewClass *klass); static void gtk_text_view_destroy (GtkObject *object); static void gtk_text_view_finalize (GObject *object); static void gtk_text_view_set_arg (GtkObject *object, GtkArg *arg, guint arg_id); static void gtk_text_view_get_arg (GtkObject *object, GtkArg *arg, guint arg_id); static void gtk_text_view_size_request (GtkWidget *widget, GtkRequisition *requisition); static void gtk_text_view_size_allocate (GtkWidget *widget, GtkAllocation *allocation); static void gtk_text_view_realize (GtkWidget *widget); static void gtk_text_view_unrealize (GtkWidget *widget); static void gtk_text_view_style_set (GtkWidget *widget, GtkStyle *previous_style); static void gtk_text_view_direction_changed (GtkWidget *widget, GtkTextDirection previous_direction); static gint gtk_text_view_event (GtkWidget *widget, GdkEvent *event); static gint gtk_text_view_key_press_event (GtkWidget *widget, GdkEventKey *event); static gint gtk_text_view_key_release_event (GtkWidget *widget, GdkEventKey *event); static gint gtk_text_view_button_press_event (GtkWidget *widget, GdkEventButton *event); static gint gtk_text_view_button_release_event (GtkWidget *widget, GdkEventButton *event); static gint gtk_text_view_focus_in_event (GtkWidget *widget, GdkEventFocus *event); static gint gtk_text_view_focus_out_event (GtkWidget *widget, GdkEventFocus *event); static gint gtk_text_view_motion_event (GtkWidget *widget, GdkEventMotion *event); static gint gtk_text_view_expose_event (GtkWidget *widget, GdkEventExpose *expose); static void gtk_text_view_draw_focus (GtkWidget *widget); /* Source side drag signals */ static void gtk_text_view_drag_begin (GtkWidget *widget, GdkDragContext *context); static void gtk_text_view_drag_end (GtkWidget *widget, GdkDragContext *context); static void gtk_text_view_drag_data_get (GtkWidget *widget, GdkDragContext *context, GtkSelectionData *selection_data, guint info, guint time); static void gtk_text_view_drag_data_delete (GtkWidget *widget, GdkDragContext *context); /* Target side drag signals */ static void gtk_text_view_drag_leave (GtkWidget *widget, GdkDragContext *context, guint time); static gboolean gtk_text_view_drag_motion (GtkWidget *widget, GdkDragContext *context, gint x, gint y, guint time); static gboolean gtk_text_view_drag_drop (GtkWidget *widget, GdkDragContext *context, gint x, gint y, guint time); static void gtk_text_view_drag_data_received (GtkWidget *widget, GdkDragContext *context, gint x, gint y, GtkSelectionData *selection_data, guint info, guint time); static void gtk_text_view_set_scroll_adjustments (GtkTextView *text_view, GtkAdjustment *hadj, GtkAdjustment *vadj); static void gtk_text_view_move_cursor (GtkTextView *text_view, GtkMovementStep step, gint count, gboolean extend_selection); static void gtk_text_view_set_anchor (GtkTextView *text_view); static void gtk_text_view_scroll_pages (GtkTextView *text_view, gint count); static void gtk_text_view_insert_at_cursor (GtkTextView *text_view, const gchar *str); static void gtk_text_view_delete_from_cursor (GtkTextView *text_view, GtkDeleteType type, gint count); static void gtk_text_view_cut_clipboard (GtkTextView *text_view); static void gtk_text_view_copy_clipboard (GtkTextView *text_view); static void gtk_text_view_paste_clipboard (GtkTextView *text_view); static void gtk_text_view_toggle_overwrite (GtkTextView *text_view); static void gtk_text_view_unselect (GtkTextView *text_view); static void gtk_text_view_validate_onscreen (GtkTextView *text_view); static void gtk_text_view_get_first_para_iter (GtkTextView *text_view, GtkTextIter *iter); static void gtk_text_view_scroll_calc_now (GtkTextView *text_view); static void gtk_text_view_set_attributes_from_style (GtkTextView *text_view, GtkTextAttributes *values, GtkStyle *style); static void gtk_text_view_ensure_layout (GtkTextView *text_view); static void gtk_text_view_destroy_layout (GtkTextView *text_view); static void gtk_text_view_reset_im_context (GtkTextView *text_view); static void gtk_text_view_start_selection_drag (GtkTextView *text_view, const GtkTextIter *iter, GdkEventButton *event); static gboolean gtk_text_view_end_selection_drag (GtkTextView *text_view, GdkEventButton *event); static void gtk_text_view_start_selection_dnd (GtkTextView *text_view, const GtkTextIter *iter, GdkEventMotion *event); static void gtk_text_view_start_cursor_blink (GtkTextView *text_view, gboolean with_delay); static void gtk_text_view_stop_cursor_blink (GtkTextView *text_view); static void gtk_text_view_value_changed (GtkAdjustment *adj, GtkTextView *view); static void gtk_text_view_commit_handler (GtkIMContext *context, const gchar *str, GtkTextView *text_view); static void gtk_text_view_preedit_changed_handler (GtkIMContext *context, GtkTextView *text_view); static void gtk_text_view_mark_set_handler (GtkTextBuffer *buffer, const GtkTextIter *location, GtkTextMark *mark, gpointer data); static void gtk_text_view_get_virtual_cursor_pos (GtkTextView *text_view, gint *x, gint *y); static void gtk_text_view_set_virtual_cursor_pos (GtkTextView *text_view, gint x, gint y); static GtkAdjustment* get_hadjustment (GtkTextView *text_view); static GtkAdjustment* get_vadjustment (GtkTextView *text_view); static void gtk_text_view_popup_menu (GtkTextView *text_view, GdkEventButton *event); /* Container methods */ static void gtk_text_view_add (GtkContainer *container, GtkWidget *child); static void gtk_text_view_remove (GtkContainer *container, GtkWidget *child); static void gtk_text_view_forall (GtkContainer *container, gboolean include_internals, GtkCallback callback, gpointer callback_data); /* FIXME probably need the focus methods. */ typedef struct _GtkTextViewChild GtkTextViewChild; struct _GtkTextViewChild { GtkWidget *widget; GtkTextChildAnchor *anchor; gint from_top_of_line; gint from_left_of_buffer; /* These are ignored if anchor != NULL */ GtkTextWindowType type; gint x; gint y; }; static GtkTextViewChild* text_view_child_new_anchored (GtkWidget *child, GtkTextChildAnchor *anchor, GtkTextLayout *layout); static GtkTextViewChild* text_view_child_new_window (GtkWidget *child, GtkTextWindowType type, gint x, gint y); static void text_view_child_free (GtkTextViewChild *child); static void text_view_child_realize (GtkTextView *text_view, GtkTextViewChild *child); struct _GtkTextWindow { GtkTextWindowType type; GtkWidget *widget; GdkWindow *window; GdkWindow *bin_window; GtkRequisition requisition; GdkRectangle allocation; }; static GtkTextWindow *text_window_new (GtkTextWindowType type, GtkWidget *widget, gint width_request, gint height_request); static void text_window_free (GtkTextWindow *win); static void text_window_realize (GtkTextWindow *win, GdkWindow *parent); static void text_window_unrealize (GtkTextWindow *win); static void text_window_size_allocate (GtkTextWindow *win, GdkRectangle *rect); static void text_window_scroll (GtkTextWindow *win, gint dx, gint dy); static void text_window_invalidate_rect (GtkTextWindow *win, GdkRectangle *rect); static gint text_window_get_width (GtkTextWindow *win); static gint text_window_get_height (GtkTextWindow *win); static void text_window_get_allocation (GtkTextWindow *win, GdkRectangle *rect); enum { TARGET_STRING, TARGET_TEXT, TARGET_COMPOUND_TEXT, TARGET_UTF8_STRING, TARGET_TEXT_BUFFER_CONTENTS }; static GtkTargetEntry target_table[] = { { "GTK_TEXT_BUFFER_CONTENTS", GTK_TARGET_SAME_APP, TARGET_TEXT_BUFFER_CONTENTS }, { "UTF8_STRING", 0, TARGET_UTF8_STRING }, { "COMPOUND_TEXT", 0, TARGET_COMPOUND_TEXT }, { "TEXT", 0, TARGET_TEXT }, { "text/plain", 0, TARGET_STRING }, { "STRING", 0, TARGET_STRING } }; static GtkContainerClass *parent_class = NULL; static guint signals[LAST_SIGNAL] = { 0 }; GtkType gtk_text_view_get_type (void) { static GtkType our_type = 0; if (our_type == 0) { static const GtkTypeInfo our_info = { "GtkTextView", sizeof (GtkTextView), sizeof (GtkTextViewClass), (GtkClassInitFunc) gtk_text_view_class_init, (GtkObjectInitFunc) gtk_text_view_init, /* reserved_1 */ NULL, /* reserved_2 */ NULL, (GtkClassInitFunc) NULL }; our_type = gtk_type_unique (GTK_TYPE_CONTAINER, &our_info); } return our_type; } static void add_move_binding (GtkBindingSet *binding_set, guint keyval, guint modmask, GtkMovementStep step, gint count) { g_return_if_fail ((modmask & GDK_SHIFT_MASK) == 0); gtk_binding_entry_add_signal (binding_set, keyval, modmask, "move_cursor", 3, GTK_TYPE_ENUM, step, GTK_TYPE_INT, count, GTK_TYPE_BOOL, FALSE); /* Selection-extending version */ gtk_binding_entry_add_signal (binding_set, keyval, modmask | GDK_SHIFT_MASK, "move_cursor", 3, GTK_TYPE_ENUM, step, GTK_TYPE_INT, count, GTK_TYPE_BOOL, TRUE); } static void gtk_text_view_class_init (GtkTextViewClass *klass) { GObjectClass *gobject_class = G_OBJECT_CLASS (klass); GtkObjectClass *object_class = GTK_OBJECT_CLASS (klass); GtkWidgetClass *widget_class = GTK_WIDGET_CLASS (klass); GtkContainerClass *container_class = GTK_CONTAINER_CLASS (klass); GtkBindingSet *binding_set; parent_class = gtk_type_class (GTK_TYPE_CONTAINER); /* * Arguments */ gtk_object_add_arg_type ("GtkTextView::height_lines", GTK_TYPE_INT, GTK_ARG_READWRITE, ARG_HEIGHT_LINES); gtk_object_add_arg_type ("GtkTextView::width_columns", GTK_TYPE_INT, GTK_ARG_READWRITE, ARG_WIDTH_COLUMNS); gtk_object_add_arg_type ("GtkTextView::pixels_above_lines", GTK_TYPE_INT, GTK_ARG_READWRITE, ARG_PIXELS_ABOVE_LINES); gtk_object_add_arg_type ("GtkTextView::pixels_below_lines", GTK_TYPE_INT, GTK_ARG_READWRITE, ARG_PIXELS_BELOW_LINES); gtk_object_add_arg_type ("GtkTextView::pixels_inside_wrap", GTK_TYPE_INT, GTK_ARG_READWRITE, ARG_PIXELS_INSIDE_WRAP); gtk_object_add_arg_type ("GtkTextView::editable", GTK_TYPE_BOOL, GTK_ARG_READWRITE, ARG_EDITABLE); gtk_object_add_arg_type ("GtkTextView::wrap_mode", GTK_TYPE_ENUM, GTK_ARG_READWRITE, ARG_WRAP_MODE); gtk_object_add_arg_type ("GtkTextView::justify", GTK_TYPE_ENUM, GTK_ARG_READWRITE, ARG_JUSTIFY); gtk_object_add_arg_type ("GtkTextView::left_margin", GTK_TYPE_INT, GTK_ARG_READWRITE, ARG_LEFT_MARGIN); gtk_object_add_arg_type ("GtkTextView::right_margin", GTK_TYPE_INT, GTK_ARG_READWRITE, ARG_RIGHT_MARGIN); gtk_object_add_arg_type ("GtkTextView::indent", GTK_TYPE_INT, GTK_ARG_READWRITE, ARG_INDENT); gtk_object_add_arg_type ("GtkTextView::tabs", GTK_TYPE_POINTER, /* FIXME */ GTK_ARG_READWRITE, ARG_TABS); /* * Signals */ signals[MOVE_CURSOR] = gtk_signal_new ("move_cursor", GTK_RUN_LAST | GTK_RUN_ACTION, GTK_CLASS_TYPE (object_class), GTK_SIGNAL_OFFSET (GtkTextViewClass, move_cursor), gtk_marshal_VOID__ENUM_INT_BOOLEAN, GTK_TYPE_NONE, 3, GTK_TYPE_MOVEMENT_STEP, GTK_TYPE_INT, GTK_TYPE_BOOL); signals[SET_ANCHOR] = gtk_signal_new ("set_anchor", GTK_RUN_LAST | GTK_RUN_ACTION, GTK_CLASS_TYPE (object_class), GTK_SIGNAL_OFFSET (GtkTextViewClass, set_anchor), gtk_marshal_VOID__VOID, GTK_TYPE_NONE, 0); signals[INSERT_AT_CURSOR] = gtk_signal_new ("insert_at_cursor", GTK_RUN_LAST | GTK_RUN_ACTION, GTK_CLASS_TYPE (object_class), GTK_SIGNAL_OFFSET (GtkTextViewClass, insert_at_cursor), gtk_marshal_VOID__POINTER, GTK_TYPE_NONE, 1, GTK_TYPE_STRING); signals[DELETE_FROM_CURSOR] = gtk_signal_new ("delete_from_cursor", GTK_RUN_LAST | GTK_RUN_ACTION, GTK_CLASS_TYPE (object_class), GTK_SIGNAL_OFFSET (GtkTextViewClass, delete_from_cursor), gtk_marshal_VOID__ENUM_INT, GTK_TYPE_NONE, 2, GTK_TYPE_DELETE_TYPE, GTK_TYPE_INT); signals[CUT_CLIPBOARD] = gtk_signal_new ("cut_clipboard", GTK_RUN_LAST | GTK_RUN_ACTION, GTK_CLASS_TYPE (object_class), GTK_SIGNAL_OFFSET (GtkTextViewClass, cut_clipboard), gtk_marshal_VOID__VOID, GTK_TYPE_NONE, 0); signals[COPY_CLIPBOARD] = gtk_signal_new ("copy_clipboard", GTK_RUN_LAST | GTK_RUN_ACTION, GTK_CLASS_TYPE (object_class), GTK_SIGNAL_OFFSET (GtkTextViewClass, copy_clipboard), gtk_marshal_VOID__VOID, GTK_TYPE_NONE, 0); signals[PASTE_CLIPBOARD] = gtk_signal_new ("paste_clipboard", GTK_RUN_LAST | GTK_RUN_ACTION, GTK_CLASS_TYPE (object_class), GTK_SIGNAL_OFFSET (GtkTextViewClass, paste_clipboard), gtk_marshal_VOID__VOID, GTK_TYPE_NONE, 0); signals[TOGGLE_OVERWRITE] = gtk_signal_new ("toggle_overwrite", GTK_RUN_LAST | GTK_RUN_ACTION, GTK_CLASS_TYPE (object_class), GTK_SIGNAL_OFFSET (GtkTextViewClass, toggle_overwrite), gtk_marshal_VOID__VOID, GTK_TYPE_NONE, 0); signals[SET_SCROLL_ADJUSTMENTS] = widget_class->set_scroll_adjustments_signal = gtk_signal_new ("set_scroll_adjustments", GTK_RUN_LAST, GTK_CLASS_TYPE (object_class), GTK_SIGNAL_OFFSET (GtkTextViewClass, set_scroll_adjustments), gtk_marshal_VOID__POINTER_POINTER, GTK_TYPE_NONE, 2, GTK_TYPE_ADJUSTMENT, GTK_TYPE_ADJUSTMENT); gtk_object_class_add_signals (object_class, signals, LAST_SIGNAL); /* * Key bindings */ binding_set = gtk_binding_set_by_class (klass); /* Moving the insertion point */ add_move_binding (binding_set, GDK_Right, 0, GTK_MOVEMENT_POSITIONS, 1); add_move_binding (binding_set, GDK_Left, 0, GTK_MOVEMENT_POSITIONS, -1); add_move_binding (binding_set, GDK_f, GDK_CONTROL_MASK, GTK_MOVEMENT_CHARS, 1); add_move_binding (binding_set, GDK_b, GDK_CONTROL_MASK, GTK_MOVEMENT_CHARS, -1); add_move_binding (binding_set, GDK_Right, GDK_CONTROL_MASK, GTK_MOVEMENT_WORDS, 1); add_move_binding (binding_set, GDK_Left, GDK_CONTROL_MASK, GTK_MOVEMENT_WORDS, -1); /* Eventually we want to move by display lines, not paragraphs */ add_move_binding (binding_set, GDK_Up, 0, GTK_MOVEMENT_DISPLAY_LINES, -1); add_move_binding (binding_set, GDK_Down, 0, GTK_MOVEMENT_DISPLAY_LINES, 1); add_move_binding (binding_set, GDK_p, GDK_CONTROL_MASK, GTK_MOVEMENT_DISPLAY_LINES, -1); add_move_binding (binding_set, GDK_n, GDK_CONTROL_MASK, GTK_MOVEMENT_DISPLAY_LINES, 1); add_move_binding (binding_set, GDK_a, GDK_CONTROL_MASK, GTK_MOVEMENT_PARAGRAPH_ENDS, -1); add_move_binding (binding_set, GDK_e, GDK_CONTROL_MASK, GTK_MOVEMENT_PARAGRAPH_ENDS, 1); add_move_binding (binding_set, GDK_f, GDK_MOD1_MASK, GTK_MOVEMENT_WORDS, 1); add_move_binding (binding_set, GDK_b, GDK_MOD1_MASK, GTK_MOVEMENT_WORDS, -1); add_move_binding (binding_set, GDK_Home, 0, GTK_MOVEMENT_DISPLAY_LINE_ENDS, -1); add_move_binding (binding_set, GDK_End, 0, GTK_MOVEMENT_DISPLAY_LINE_ENDS, 1); add_move_binding (binding_set, GDK_Home, GDK_CONTROL_MASK, GTK_MOVEMENT_BUFFER_ENDS, -1); add_move_binding (binding_set, GDK_End, GDK_CONTROL_MASK, GTK_MOVEMENT_BUFFER_ENDS, 1); add_move_binding (binding_set, GDK_Page_Up, 0, GTK_MOVEMENT_PAGES, -1); add_move_binding (binding_set, GDK_Page_Down, 0, GTK_MOVEMENT_PAGES, 1); /* Setting the cut/paste/copy anchor */ gtk_binding_entry_add_signal (binding_set, GDK_space, GDK_CONTROL_MASK, "set_anchor", 0); /* Deleting text */ gtk_binding_entry_add_signal (binding_set, GDK_Delete, 0, "delete_from_cursor", 2, GTK_TYPE_ENUM, GTK_DELETE_CHARS, GTK_TYPE_INT, 1); gtk_binding_entry_add_signal (binding_set, GDK_d, GDK_CONTROL_MASK, "delete_from_cursor", 2, GTK_TYPE_ENUM, GTK_DELETE_CHARS, GTK_TYPE_INT, 1); gtk_binding_entry_add_signal (binding_set, GDK_BackSpace, 0, "delete_from_cursor", 2, GTK_TYPE_ENUM, GTK_DELETE_CHARS, GTK_TYPE_INT, -1); gtk_binding_entry_add_signal (binding_set, GDK_Delete, GDK_CONTROL_MASK, "delete_from_cursor", 2, GTK_TYPE_ENUM, GTK_DELETE_WORD_ENDS, GTK_TYPE_INT, 1); gtk_binding_entry_add_signal (binding_set, GDK_d, GDK_MOD1_MASK, "delete_from_cursor", 2, GTK_TYPE_ENUM, GTK_DELETE_WORD_ENDS, GTK_TYPE_INT, 1); gtk_binding_entry_add_signal (binding_set, GDK_BackSpace, GDK_CONTROL_MASK, "delete_from_cursor", 2, GTK_TYPE_ENUM, GTK_DELETE_WORD_ENDS, GTK_TYPE_INT, -1); gtk_binding_entry_add_signal (binding_set, GDK_k, GDK_CONTROL_MASK, "delete_from_cursor", 2, GTK_TYPE_ENUM, GTK_DELETE_PARAGRAPH_ENDS, GTK_TYPE_INT, 1); gtk_binding_entry_add_signal (binding_set, GDK_u, GDK_CONTROL_MASK, "delete_from_cursor", 2, GTK_TYPE_ENUM, GTK_DELETE_PARAGRAPHS, GTK_TYPE_INT, 1); gtk_binding_entry_add_signal (binding_set, GDK_space, GDK_MOD1_MASK, "delete_from_cursor", 2, GTK_TYPE_ENUM, GTK_DELETE_WHITESPACE, GTK_TYPE_INT, 1); gtk_binding_entry_add_signal (binding_set, GDK_space, GDK_MOD1_MASK, "insert_at_cursor", 1, GTK_TYPE_STRING, " "); gtk_binding_entry_add_signal (binding_set, GDK_backslash, GDK_MOD1_MASK, "delete_from_cursor", 2, GTK_TYPE_ENUM, GTK_DELETE_WHITESPACE, GTK_TYPE_INT, 1); /* Cut/copy/paste */ gtk_binding_entry_add_signal (binding_set, GDK_x, GDK_CONTROL_MASK, "cut_clipboard", 0); gtk_binding_entry_add_signal (binding_set, GDK_w, GDK_CONTROL_MASK, "cut_clipboard", 0); gtk_binding_entry_add_signal (binding_set, GDK_c, GDK_CONTROL_MASK, "copy_clipboard", 0); gtk_binding_entry_add_signal (binding_set, GDK_v, GDK_CONTROL_MASK, "paste_clipboard", 0); gtk_binding_entry_add_signal (binding_set, GDK_y, GDK_CONTROL_MASK, "paste_clipboard", 0); /* Overwrite */ gtk_binding_entry_add_signal (binding_set, GDK_Insert, 0, "toggle_overwrite", 0); /* * Default handlers and virtual methods */ object_class->set_arg = gtk_text_view_set_arg; object_class->get_arg = gtk_text_view_get_arg; object_class->destroy = gtk_text_view_destroy; gobject_class->finalize = gtk_text_view_finalize; widget_class->realize = gtk_text_view_realize; widget_class->unrealize = gtk_text_view_unrealize; widget_class->style_set = gtk_text_view_style_set; widget_class->direction_changed = gtk_text_view_direction_changed; widget_class->size_request = gtk_text_view_size_request; widget_class->size_allocate = gtk_text_view_size_allocate; widget_class->event = gtk_text_view_event; widget_class->key_press_event = gtk_text_view_key_press_event; widget_class->key_release_event = gtk_text_view_key_release_event; widget_class->button_press_event = gtk_text_view_button_press_event; widget_class->button_release_event = gtk_text_view_button_release_event; widget_class->focus_in_event = gtk_text_view_focus_in_event; widget_class->focus_out_event = gtk_text_view_focus_out_event; widget_class->motion_notify_event = gtk_text_view_motion_event; widget_class->expose_event = gtk_text_view_expose_event; widget_class->draw_focus = gtk_text_view_draw_focus; widget_class->drag_begin = gtk_text_view_drag_begin; widget_class->drag_end = gtk_text_view_drag_end; widget_class->drag_data_get = gtk_text_view_drag_data_get; widget_class->drag_data_delete = gtk_text_view_drag_data_delete; widget_class->drag_leave = gtk_text_view_drag_leave; widget_class->drag_motion = gtk_text_view_drag_motion; widget_class->drag_drop = gtk_text_view_drag_drop; widget_class->drag_data_received = gtk_text_view_drag_data_received; container_class->add = gtk_text_view_add; container_class->remove = gtk_text_view_remove; container_class->forall = gtk_text_view_forall; klass->move_cursor = gtk_text_view_move_cursor; klass->set_anchor = gtk_text_view_set_anchor; klass->insert_at_cursor = gtk_text_view_insert_at_cursor; klass->delete_from_cursor = gtk_text_view_delete_from_cursor; klass->cut_clipboard = gtk_text_view_cut_clipboard; klass->copy_clipboard = gtk_text_view_copy_clipboard; klass->paste_clipboard = gtk_text_view_paste_clipboard; klass->toggle_overwrite = gtk_text_view_toggle_overwrite; klass->set_scroll_adjustments = gtk_text_view_set_scroll_adjustments; } void gtk_text_view_init (GtkTextView *text_view) { GtkWidget *widget; widget = GTK_WIDGET (text_view); GTK_WIDGET_SET_FLAGS (widget, GTK_CAN_FOCUS); /* Set up default style */ text_view->wrap_mode = GTK_WRAPMODE_NONE; text_view->pixels_above_lines = 0; text_view->pixels_below_lines = 0; text_view->pixels_inside_wrap = 0; text_view->justify = GTK_JUSTIFY_LEFT; text_view->left_margin = 0; text_view->right_margin = 0; text_view->indent = 0; text_view->tabs = NULL; text_view->editable = TRUE; gtk_drag_dest_set (widget, GTK_DEST_DEFAULT_DROP, target_table, G_N_ELEMENTS (target_table), GDK_ACTION_COPY | GDK_ACTION_MOVE); text_view->virtual_cursor_x = -1; text_view->virtual_cursor_y = -1; /* This object is completely private. No external entity can gain a reference * to it; so we create it here and destroy it in finalize (). */ text_view->im_context = gtk_im_multicontext_new (); gtk_signal_connect (GTK_OBJECT (text_view->im_context), "commit", GTK_SIGNAL_FUNC (gtk_text_view_commit_handler), text_view); gtk_signal_connect (GTK_OBJECT (text_view->im_context), "preedit_changed", GTK_SIGNAL_FUNC (gtk_text_view_preedit_changed_handler), text_view); text_view->cursor_visible = TRUE; text_view->text_window = text_window_new (GTK_TEXT_WINDOW_TEXT, widget, 200, 200); text_view->drag_start_x = -1; text_view->drag_start_y = -1; } /** * gtk_text_view_new: * * Creates a new #GtkTextView. If you don't call gtk_text_view_set_buffer() * before using the text view, an empty default buffer will be created * for you. Get the buffer with gtk_text_view_get_buffer(). If you want * to specify your own buffer, consider gtk_text_view_new_with_buffer(). * * Return value: a new #GtkTextView **/ GtkWidget* gtk_text_view_new (void) { return GTK_WIDGET (gtk_type_new (gtk_text_view_get_type ())); } /** * gtk_text_view_new_with_buffer: * @buffer: a #GtkTextBuffer * * Creates a new #GtkTextView widget displaying the buffer * @buffer. One buffer can be shared among many widgets. * @buffer may be NULL to create a default buffer, in which case * this function is equivalent to gtk_text_view_new(). The * text view adds its own reference count to the buffer; it does not * take over an existing reference. * * Return value: a new #GtkTextView. **/ GtkWidget* gtk_text_view_new_with_buffer (GtkTextBuffer *buffer) { GtkTextView *text_view; text_view = (GtkTextView*)gtk_text_view_new (); gtk_text_view_set_buffer (text_view, buffer); return GTK_WIDGET (text_view); } /** * gtk_text_view_set_buffer: * @text_view: a #GtkTextView * @buffer: a #GtkTextBuffer * * Sets @buffer as the buffer being displayed by @text_view. The previous * buffer displayed by the text view is unreferenced, and a reference is * added to @buffer. If you owned a reference to @buffer before passing it * to this function, you must remove that reference yourself; #GtkTextView * will not "adopt" it. * **/ void gtk_text_view_set_buffer (GtkTextView *text_view, GtkTextBuffer *buffer) { g_return_if_fail (GTK_IS_TEXT_VIEW (text_view)); g_return_if_fail (buffer == NULL || GTK_IS_TEXT_BUFFER (buffer)); if (text_view->buffer == buffer) return; if (text_view->buffer != NULL) { /* Destroy all anchored children */ GSList *tmp_list; GSList *copy; copy = g_slist_copy (text_view->children); tmp_list = copy; while (tmp_list != NULL) { GtkTextViewChild *vc = tmp_list->data; if (vc->anchor) { gtk_widget_destroy (vc->widget); /* vc may now be invalid! */ } tmp_list = g_slist_next (tmp_list); } g_slist_free (copy); gtk_signal_disconnect_by_func (GTK_OBJECT (text_view->buffer), gtk_text_view_mark_set_handler, text_view); gtk_object_unref (GTK_OBJECT (text_view->buffer)); text_view->dnd_mark = NULL; } text_view->buffer = buffer; if (buffer != NULL) { GtkTextIter start; gtk_object_ref (GTK_OBJECT (buffer)); gtk_object_sink (GTK_OBJECT (buffer)); if (text_view->layout) gtk_text_layout_set_buffer (text_view->layout, buffer); gtk_text_buffer_get_iter_at_offset (text_view->buffer, &start, 0); text_view->dnd_mark = gtk_text_buffer_create_mark (text_view->buffer, "gtk_drag_target", &start, FALSE); text_view->first_para_mark = gtk_text_buffer_create_mark (text_view->buffer, NULL, &start, TRUE); text_view->first_para_pixels = 0; gtk_signal_connect (GTK_OBJECT (text_view->buffer), "mark_set", gtk_text_view_mark_set_handler, text_view); } if (GTK_WIDGET_VISIBLE (text_view)) gtk_widget_queue_draw (GTK_WIDGET (text_view)); } static GtkTextBuffer* get_buffer (GtkTextView *text_view) { if (text_view->buffer == NULL) { GtkTextBuffer *b; b = gtk_text_buffer_new (NULL); gtk_text_view_set_buffer (text_view, b); g_object_unref (G_OBJECT (b)); } return text_view->buffer; } /** * gtk_text_view_get_buffer: * @text_view: a #GtkTextView * * Returns the #GtkTextBuffer being displayed by this text view. * The reference count on the buffer is not incremented; the caller * of this function won't own a new reference. * * Return value: a #GtkTextBuffer **/ GtkTextBuffer* gtk_text_view_get_buffer (GtkTextView *text_view) { g_return_val_if_fail (GTK_IS_TEXT_VIEW (text_view), NULL); return get_buffer (text_view); } /** * gtk_text_view_get_iter_at_location: * @text_view: a #GtkTextView * @iter: a #GtkTextIter * @x: x position, in buffer coordinates * @y: y position, in buffer coordinates * * Retrieves the iterator at buffer coordinates @x and @y. Buffer * coordinates are coordinates for the entire buffer, not just the * currently-displayed portion. If you have coordinates from an * event, you have to convert those to buffer coordinates with * gtk_text_view_window_to_buffer_coords(). * **/ void gtk_text_view_get_iter_at_location (GtkTextView *text_view, GtkTextIter *iter, gint x, gint y) { g_return_if_fail (GTK_IS_TEXT_VIEW (text_view)); g_return_if_fail (iter != NULL); g_return_if_fail (text_view->layout != NULL); gtk_text_layout_get_iter_at_pixel (text_view->layout, iter, x, y); } /** * gtk_text_view_get_iter_location: * @text_view: a #GtkTextView * @iter: a #GtkTextIter * @location: bounds of the character at @iter * * Gets a rectangle which roughly contains the character at @iter. * The rectangle position is in buffer coordinates; use * gtk_text_view_buffer_to_window_coords() to convert these * coordinates to coordinates for one of the windows in the text view. * **/ void gtk_text_view_get_iter_location (GtkTextView *text_view, const GtkTextIter *iter, GdkRectangle *location) { g_return_if_fail (GTK_IS_TEXT_VIEW (text_view)); g_return_if_fail (gtk_text_iter_get_buffer (iter) == get_buffer (text_view)); gtk_text_layout_get_iter_location (text_view->layout, iter, location); } /** * gtk_text_view_get_line_yrange: * @text_view: a #GtkTextView * @iter: a #GtkTextIter * @y: return location for a y coordinate * @height: return location for a height * * Gets the y coordinate of the top of the line containing @iter, * and the height of the line. The coordinate is a buffer coordinate; * convert to window coordinates with gtk_text_view_buffer_to_window_coords(). * **/ void gtk_text_view_get_line_yrange (GtkTextView *text_view, const GtkTextIter *iter, gint *y, gint *height) { g_return_if_fail (GTK_IS_TEXT_VIEW (text_view)); g_return_if_fail (gtk_text_iter_get_buffer (iter) == get_buffer (text_view)); gtk_text_layout_get_line_yrange (text_view->layout, iter, y, height); } /** * gtk_text_view_get_line_at_y: * @text_view: a #GtkTextView * @target_iter: a #GtkTextIter * @y: a y coordinate * @line_top: return location for top coordinate of the line * * Gets the #GtkTextIter at the start of the line containing * the coordinate @y. @y is in buffer coordinates, convert from * window coordinates with gtk_text_view_window_to_buffer_coords(). * If non-%NULL, @line_top will be filled with the coordinate of the top * edge of the line. **/ void gtk_text_view_get_line_at_y (GtkTextView *text_view, GtkTextIter *target_iter, gint y, gint *line_top) { g_return_if_fail (GTK_IS_TEXT_VIEW (text_view)); gtk_text_layout_get_line_at_y (text_view->layout, target_iter, y, line_top); } static void set_adjustment_clamped (GtkAdjustment *adj, gfloat val) { /* We don't really want to clamp to upper; we want to clamp to upper - page_size which is the highest value the scrollbar will let us reach. */ if (val > (adj->upper - adj->page_size)) val = adj->upper - adj->page_size; if (val < adj->lower) val = adj->lower; gtk_adjustment_set_value (adj, val); } static gboolean gtk_text_view_scroll_to_mark_adjusted (GtkTextView *text_view, GtkTextMark *mark, gint margin, gfloat percentage) { GtkTextIter iter; GdkRectangle rect; GdkRectangle screen; gint screen_bottom; gint screen_right; GtkWidget *widget; gboolean retval = FALSE; gint scroll_inc; gint current_x_scroll, current_y_scroll; g_return_val_if_fail (GTK_IS_TEXT_VIEW (text_view), FALSE); g_return_val_if_fail (mark != NULL, FALSE); widget = GTK_WIDGET (text_view); if (!GTK_WIDGET_MAPPED (widget)) { g_warning ("FIXME need to implement scroll_to_mark for unmapped GtkTextView?"); return FALSE; } gtk_text_buffer_get_iter_at_mark (get_buffer (text_view), &iter, mark); gtk_text_layout_get_iter_location (text_view->layout, &iter, &rect); /* Be sure the scroll region is up-to-date */ gtk_text_view_scroll_calc_now (text_view); current_x_scroll = text_view->xoffset; current_y_scroll = text_view->yoffset; screen.x = current_x_scroll; screen.y = current_y_scroll; screen.width = SCREEN_WIDTH (widget); screen.height = SCREEN_HEIGHT (widget); { /* Clamp margin so it's not too large. */ gint small_dimension = MIN (screen.width, screen.height); gint max_rect_dim; if (margin > (small_dimension/2 - 5)) /* 5 is arbitrary */ margin = (small_dimension/2 - 5); if (margin < 0) margin = 0; /* make sure rectangle fits in the leftover space */ max_rect_dim = MAX (rect.width, rect.height); if (max_rect_dim > (small_dimension - margin*2)) margin -= max_rect_dim - (small_dimension - margin*2); if (margin < 0) margin = 0; } g_assert (margin >= 0); screen.x += margin; screen.y += margin; screen.width -= margin*2; screen.height -= margin*2; screen_bottom = screen.y + screen.height; screen_right = screen.x + screen.width; /* Vertical scroll (only vertical gets adjusted) */ scroll_inc = 0; if (rect.y < screen.y) { gint scroll_dest = rect.y; scroll_inc = (scroll_dest - screen.y) * percentage; } else if ((rect.y + rect.height) > screen_bottom) { gint scroll_dest = rect.y + rect.height; scroll_inc = (scroll_dest - screen_bottom) * percentage; } if (scroll_inc != 0) { set_adjustment_clamped (get_vadjustment (text_view), current_y_scroll + scroll_inc); retval = TRUE; } /* Horizontal scroll */ scroll_inc = 0; if (rect.x < screen.x) { gint scroll_dest = rect.x; scroll_inc = scroll_dest - screen.x; } else if ((rect.x + rect.width) > screen_right) { gint scroll_dest = rect.x + rect.width; scroll_inc = scroll_dest - screen_right; } if (scroll_inc != 0) { set_adjustment_clamped (get_hadjustment (text_view), current_x_scroll + scroll_inc); retval = TRUE; } return retval; } /** * gtk_text_view_scroll_to_mark: * @text_view: a #GtkTextView * @mark: a #GtkTextMark * @mark_within_margin: a margin * * Scrolls @text_view so that @mark is on the screen. If * @mark_within_margin is nonzero, the mark will be moved onscreen by * that many pixels. For example, if @mark_within_margin is 5, the * mark will be at least 5 pixels away from the edge of the screen, * if possible. * * Return value: TRUE if scrolling occurred **/ gboolean gtk_text_view_scroll_to_mark (GtkTextView *text_view, GtkTextMark *mark, gint mark_within_margin) { g_return_val_if_fail (mark_within_margin >= 0, FALSE); return gtk_text_view_scroll_to_mark_adjusted (text_view, mark, mark_within_margin, 1.0); } static gboolean clamp_iter_onscreen (GtkTextView *text_view, GtkTextIter *iter) { GdkRectangle visible_rect; gtk_text_view_get_visible_rect (text_view, &visible_rect); return gtk_text_layout_clamp_iter_to_vrange (text_view->layout, iter, visible_rect.y, visible_rect.y + visible_rect.height); } /** * gtk_text_view_move_mark_onscreen: * @text_view: a #GtkTextView * @mark: a #GtkTextMark * * Moves a mark within the buffer so that it's * located within the currently-visible text area. * * Return value: %TRUE if scrolling occurred **/ gboolean gtk_text_view_move_mark_onscreen (GtkTextView *text_view, GtkTextMark *mark) { GtkTextIter iter; g_return_val_if_fail (GTK_IS_TEXT_VIEW (text_view), FALSE); g_return_val_if_fail (mark != NULL, FALSE); gtk_text_buffer_get_iter_at_mark (get_buffer (text_view), &iter, mark); if (clamp_iter_onscreen (text_view, &iter)) { gtk_text_buffer_move_mark (get_buffer (text_view), mark, &iter); return TRUE; } else return FALSE; } /** * gtk_text_view_get_visible_rect: * @text_view: a #GtkTextView * @visible_rect: rectangle to fill * * Fills @visible_rect with the currently-visible * region of the buffer, in buffer coordinates. Convert to window coordinates * with gtk_text_view_buffer_to_window_coords(). **/ void gtk_text_view_get_visible_rect (GtkTextView *text_view, GdkRectangle *visible_rect) { GtkWidget *widget; g_return_if_fail (text_view != NULL); g_return_if_fail (GTK_IS_TEXT_VIEW (text_view)); widget = GTK_WIDGET (text_view); if (visible_rect) { visible_rect->x = text_view->xoffset; visible_rect->y = text_view->yoffset; visible_rect->width = SCREEN_WIDTH (widget); visible_rect->height = SCREEN_HEIGHT (widget); } } /** * gtk_text_view_set_wrap_mode: * @text_view: a #GtkTextView * @wrap_mode: a #GtkWrapMode * * Sets the line wrapping for the view. **/ void gtk_text_view_set_wrap_mode (GtkTextView *text_view, GtkWrapMode wrap_mode) { g_return_if_fail (text_view != NULL); g_return_if_fail (GTK_IS_TEXT_VIEW (text_view)); if (text_view->wrap_mode != wrap_mode) { text_view->wrap_mode = wrap_mode; if (text_view->layout) { text_view->layout->default_style->wrap_mode = wrap_mode; gtk_text_layout_default_style_changed (text_view->layout); } } } /** * gtk_text_view_get_wrap_mode: * @text_view: a #GtkTextView * * Gets the line wrapping for the view. * * Return value: the line wrap setting **/ GtkWrapMode gtk_text_view_get_wrap_mode (GtkTextView *text_view) { g_return_val_if_fail (text_view != NULL, GTK_WRAPMODE_NONE); g_return_val_if_fail (GTK_IS_TEXT_VIEW (text_view), GTK_WRAPMODE_NONE); return text_view->wrap_mode; } /** * gtk_text_view_set_editable: * @text_view: a #GtkTextView * @setting: whether it's editable * * Sets the default editability of the #GtkTextView. You can override * this default setting with tags in the buffer, using the "editable" * attribute of tags. **/ void gtk_text_view_set_editable (GtkTextView *text_view, gboolean setting) { g_return_if_fail (GTK_IS_TEXT_VIEW (text_view)); if (text_view->editable != setting) { text_view->editable = setting; if (text_view->layout) { text_view->layout->default_style->editable = text_view->editable; gtk_text_layout_default_style_changed (text_view->layout); } } } /** * gtk_text_view_get_editable: * @text_view: a #GtkTextView * * Returns the default editability of the #GtkTextView. Tags in the * buffer may override this setting for some ranges of text. * * Return value: whether text is editable by default **/ gboolean gtk_text_view_get_editable (GtkTextView *text_view) { g_return_val_if_fail (GTK_IS_TEXT_VIEW (text_view), FALSE); return text_view->editable; } void gtk_text_view_set_pixels_above_lines (GtkTextView *text_view, gint pixels_above_lines) { g_return_if_fail (GTK_IS_TEXT_VIEW (text_view)); if (text_view->pixels_above_lines != pixels_above_lines) { text_view->pixels_above_lines = pixels_above_lines; if (text_view->layout) { text_view->layout->default_style->pixels_above_lines = pixels_above_lines; gtk_text_layout_default_style_changed (text_view->layout); } } } gint gtk_text_view_get_pixels_above_lines (GtkTextView *text_view) { g_return_val_if_fail (GTK_IS_TEXT_VIEW (text_view), 0); return text_view->pixels_above_lines; } void gtk_text_view_set_pixels_below_lines (GtkTextView *text_view, gint pixels_below_lines) { g_return_if_fail (GTK_IS_TEXT_VIEW (text_view)); if (text_view->pixels_below_lines != pixels_below_lines) { text_view->pixels_below_lines = pixels_below_lines; if (text_view->layout) { text_view->layout->default_style->pixels_below_lines = pixels_below_lines; gtk_text_layout_default_style_changed (text_view->layout); } } } gint gtk_text_view_get_pixels_below_lines (GtkTextView *text_view) { g_return_val_if_fail (GTK_IS_TEXT_VIEW (text_view), 0); return text_view->pixels_below_lines; } void gtk_text_view_set_pixels_inside_wrap (GtkTextView *text_view, gint pixels_inside_wrap) { g_return_if_fail (GTK_IS_TEXT_VIEW (text_view)); if (text_view->pixels_inside_wrap != pixels_inside_wrap) { text_view->pixels_inside_wrap = pixels_inside_wrap; if (text_view->layout) { text_view->layout->default_style->pixels_inside_wrap = pixels_inside_wrap; gtk_text_layout_default_style_changed (text_view->layout); } } } gint gtk_text_view_get_pixels_inside_wrap (GtkTextView *text_view) { g_return_val_if_fail (GTK_IS_TEXT_VIEW (text_view), 0); return text_view->pixels_inside_wrap; } void gtk_text_view_set_justification (GtkTextView *text_view, GtkJustification justify) { g_return_if_fail (GTK_IS_TEXT_VIEW (text_view)); if (text_view->justify != justify) { text_view->justify = justify; if (text_view->layout) { text_view->layout->default_style->justify = justify; gtk_text_layout_default_style_changed (text_view->layout); } } } GtkJustification gtk_text_view_get_justification (GtkTextView *text_view) { g_return_val_if_fail (GTK_IS_TEXT_VIEW (text_view), GTK_JUSTIFY_LEFT); return text_view->justify; } void gtk_text_view_set_left_margin (GtkTextView *text_view, gint left_margin) { g_return_if_fail (GTK_IS_TEXT_VIEW (text_view)); if (text_view->left_margin != left_margin) { text_view->left_margin = left_margin; if (text_view->layout) { text_view->layout->default_style->left_margin = left_margin; gtk_text_layout_default_style_changed (text_view->layout); } } } gint gtk_text_view_get_left_margin (GtkTextView *text_view) { g_return_val_if_fail (GTK_IS_TEXT_VIEW (text_view), 0); return text_view->left_margin; } void gtk_text_view_set_right_margin (GtkTextView *text_view, gint right_margin) { g_return_if_fail (GTK_IS_TEXT_VIEW (text_view)); if (text_view->right_margin != right_margin) { text_view->right_margin = right_margin; if (text_view->layout) { text_view->layout->default_style->right_margin = right_margin; gtk_text_layout_default_style_changed (text_view->layout); } } } gint gtk_text_view_get_right_margin (GtkTextView *text_view) { g_return_val_if_fail (GTK_IS_TEXT_VIEW (text_view), 0); return text_view->right_margin; } void gtk_text_view_set_indent (GtkTextView *text_view, gint indent) { g_return_if_fail (GTK_IS_TEXT_VIEW (text_view)); if (text_view->indent != indent) { text_view->indent = indent; if (text_view->layout) { text_view->layout->default_style->indent = indent; gtk_text_layout_default_style_changed (text_view->layout); } } } gint gtk_text_view_get_indent (GtkTextView *text_view) { g_return_val_if_fail (GTK_IS_TEXT_VIEW (text_view), 0); return text_view->indent; } void gtk_text_view_set_tabs (GtkTextView *text_view, PangoTabArray *tabs) { g_return_if_fail (GTK_IS_TEXT_VIEW (text_view)); if (text_view->tabs) pango_tab_array_free (text_view->tabs); text_view->tabs = tabs ? pango_tab_array_copy (tabs) : NULL; if (text_view->layout) { /* some unkosher futzing in internal struct details... */ if (text_view->layout->default_style->tabs) pango_tab_array_free (text_view->layout->default_style->tabs); text_view->layout->default_style->tabs = text_view->tabs ? pango_tab_array_copy (text_view->tabs) : NULL; gtk_text_layout_default_style_changed (text_view->layout); } } PangoTabArray* gtk_text_view_get_tabs (GtkTextView *text_view) { g_return_val_if_fail (GTK_IS_TEXT_VIEW (text_view), NULL); return text_view->tabs ? pango_tab_array_copy (text_view->tabs) : NULL; } /** * gtk_text_view_set_cursor_visible: * @text_view: a #GtkTextView * @setting: whether to show the insertion cursor * * Toggles whether the insertion point is displayed. A buffer with no editable * text probably shouldn't have a visible cursor, so you may want to turn * the cursor off. **/ void gtk_text_view_set_cursor_visible (GtkTextView *text_view, gboolean setting) { g_return_if_fail (GTK_IS_TEXT_VIEW (text_view)); setting = (setting != FALSE); if (text_view->cursor_visible != setting) { text_view->cursor_visible = setting; if (GTK_WIDGET_HAS_FOCUS (text_view)) { if (text_view->layout) { gtk_text_layout_set_cursor_visible (text_view->layout, setting); if (setting) gtk_text_view_start_cursor_blink (text_view, FALSE); else gtk_text_view_stop_cursor_blink (text_view); } } } } /** * gtk_text_view_get_cursor_visible: * @text_view: a #GtkTextView * * Find out whether the cursor is being displayed. * * Return value: whether the insertion mark is visible **/ gboolean gtk_text_view_get_cursor_visible (GtkTextView *text_view) { g_return_val_if_fail (GTK_IS_TEXT_VIEW (text_view), FALSE); return text_view->cursor_visible; } /** * gtk_text_view_place_cursor_onscreen: * @text_view: a #GtkTextView * * Moves the cursor to the currently visible region of the * buffer, it it isn't there already. * * Return value: TRUE if the cursor had to be moved. **/ gboolean gtk_text_view_place_cursor_onscreen (GtkTextView *text_view) { GtkTextIter insert; g_return_val_if_fail (GTK_IS_TEXT_VIEW (text_view), FALSE); gtk_text_buffer_get_iter_at_mark (get_buffer (text_view), &insert, gtk_text_buffer_get_mark (get_buffer (text_view), "insert")); if (clamp_iter_onscreen (text_view, &insert)) { gtk_text_buffer_place_cursor (get_buffer (text_view), &insert); return TRUE; } else return FALSE; } static void gtk_text_view_destroy (GtkObject *object) { GtkTextView *text_view; GtkTextLayout *layout; text_view = GTK_TEXT_VIEW (object); layout = text_view->layout; gtk_text_view_destroy_layout (text_view); gtk_text_view_set_buffer (text_view, NULL); (* GTK_OBJECT_CLASS (parent_class)->destroy) (object); } static void gtk_text_view_finalize (GObject *object) { GtkTextView *text_view; text_view = GTK_TEXT_VIEW (object); g_return_if_fail (text_view->buffer == NULL); if (text_view->hadjustment) gtk_object_unref (GTK_OBJECT (text_view->hadjustment)); if (text_view->vadjustment) gtk_object_unref (GTK_OBJECT (text_view->vadjustment)); text_window_free (text_view->text_window); if (text_view->left_window) text_window_free (text_view->left_window); if (text_view->top_window) text_window_free (text_view->top_window); if (text_view->right_window) text_window_free (text_view->right_window); if (text_view->bottom_window) text_window_free (text_view->bottom_window); gtk_object_unref (GTK_OBJECT (text_view->im_context)); (* G_OBJECT_CLASS (parent_class)->finalize) (object); } static void gtk_text_view_set_arg (GtkObject *object, GtkArg *arg, guint arg_id) { GtkTextView *text_view; text_view = GTK_TEXT_VIEW (object); switch (arg_id) { case ARG_HEIGHT_LINES: g_warning ("FIXME"); break; case ARG_WIDTH_COLUMNS: g_warning ("FIXME"); break; case ARG_PIXELS_ABOVE_LINES: gtk_text_view_set_pixels_above_lines (text_view, GTK_VALUE_INT (*arg)); break; case ARG_PIXELS_BELOW_LINES: gtk_text_view_set_pixels_below_lines (text_view, GTK_VALUE_INT (*arg)); break; case ARG_PIXELS_INSIDE_WRAP: gtk_text_view_set_pixels_inside_wrap (text_view, GTK_VALUE_INT (*arg)); break; case ARG_EDITABLE: gtk_text_view_set_editable (text_view, GTK_VALUE_BOOL (*arg)); break; case ARG_WRAP_MODE: gtk_text_view_set_wrap_mode (text_view, GTK_VALUE_ENUM (*arg)); break; case ARG_JUSTIFY: gtk_text_view_set_justification (text_view, GTK_VALUE_ENUM (*arg)); break; case ARG_LEFT_MARGIN: gtk_text_view_set_left_margin (text_view, GTK_VALUE_INT (*arg)); break; case ARG_RIGHT_MARGIN: gtk_text_view_set_right_margin (text_view, GTK_VALUE_INT (*arg)); break; case ARG_INDENT: gtk_text_view_set_indent (text_view, GTK_VALUE_INT (*arg)); break; case ARG_TABS: gtk_text_view_set_tabs (text_view, GTK_VALUE_POINTER (*arg)); break; default: g_assert_not_reached (); break; } } static void gtk_text_view_get_arg (GtkObject *object, GtkArg *arg, guint arg_id) { GtkTextView *text_view; text_view = GTK_TEXT_VIEW (object); switch (arg_id) { case ARG_HEIGHT_LINES: g_warning ("FIXME"); break; case ARG_WIDTH_COLUMNS: g_warning ("FIXME"); break; case ARG_PIXELS_ABOVE_LINES: GTK_VALUE_INT (*arg) = text_view->pixels_above_lines; break; case ARG_PIXELS_BELOW_LINES: GTK_VALUE_INT (*arg) = text_view->pixels_below_lines; break; case ARG_PIXELS_INSIDE_WRAP: GTK_VALUE_INT (*arg) = text_view->pixels_inside_wrap; break; case ARG_EDITABLE: GTK_VALUE_BOOL (*arg) = text_view->editable; break; case ARG_WRAP_MODE: GTK_VALUE_ENUM (*arg) = text_view->wrap_mode; break; case ARG_JUSTIFY: GTK_VALUE_ENUM (*arg) = text_view->justify; break; case ARG_LEFT_MARGIN: GTK_VALUE_INT (*arg) = text_view->left_margin; break; case ARG_RIGHT_MARGIN: GTK_VALUE_INT (*arg) = text_view->right_margin; break; case ARG_INDENT: GTK_VALUE_INT (*arg) = text_view->indent; break; case ARG_TABS: GTK_VALUE_POINTER (*arg) = gtk_text_view_get_tabs (text_view); break; default: arg->type = GTK_TYPE_INVALID; break; } } static void gtk_text_view_size_request (GtkWidget *widget, GtkRequisition *requisition) { GtkTextView *text_view; GSList *tmp_list; text_view = GTK_TEXT_VIEW (widget); requisition->width = text_view->text_window->requisition.width + FOCUS_EDGE_WIDTH * 2; requisition->height = text_view->text_window->requisition.height + FOCUS_EDGE_WIDTH * 2; if (text_view->left_window) requisition->width += text_view->left_window->requisition.width; if (text_view->right_window) requisition->width += text_view->right_window->requisition.width; if (text_view->top_window) requisition->height += text_view->top_window->requisition.height; if (text_view->bottom_window) requisition->height += text_view->bottom_window->requisition.height; tmp_list = text_view->children; while (tmp_list != NULL) { GtkTextViewChild *child = tmp_list->data; if (child->anchor) { GtkRequisition child_req; GtkRequisition old_req; old_req = child->widget->requisition; gtk_widget_size_request (child->widget, &child_req); if (text_view->layout && (old_req.width != child_req.width || old_req.height != child_req.height)) gtk_text_child_anchor_queue_resize (child->anchor, text_view->layout); } else { } tmp_list = g_slist_next (tmp_list); } } static void gtk_text_view_update_child_allocation (GtkTextView *text_view, GtkTextViewChild *vc) { gint buffer_y; GtkTextIter iter; GtkAllocation allocation; gtk_text_buffer_get_iter_at_child_anchor (get_buffer (text_view), &iter, vc->anchor); gtk_text_layout_get_line_yrange (text_view->layout, &iter, &buffer_y, NULL); buffer_y += vc->from_top_of_line; allocation.x = vc->from_left_of_buffer; allocation.y = buffer_y; allocation.width = vc->widget->requisition.width; allocation.height = vc->widget->requisition.height; gtk_widget_size_allocate (vc->widget, &allocation); } static void gtk_text_view_child_allocated (GtkTextLayout *layout, GtkWidget *child, gint x, gint y, gpointer data) { GtkTextViewChild *vc = NULL; GtkTextView *text_view = data; /* x,y is the position of the child from the top of the line, and * from the left of the buffer. We have to translate that into text * window coordinates, then size_allocate the child. */ vc = gtk_object_get_data (GTK_OBJECT (child), "gtk-text-view-child"); g_assert (vc != NULL); g_print ("child allocated at %d,%d\n", x, y); vc->from_left_of_buffer = x; vc->from_top_of_line = y; gtk_text_view_update_child_allocation (text_view, vc); } static void gtk_text_view_validate_children (GtkTextView *text_view) { GSList *tmp_list; tmp_list = text_view->children; while (tmp_list != NULL) { GtkTextViewChild *child = tmp_list->data; if (child->anchor) { /* We need to force-validate the regions containing * children. */ GtkTextIter child_loc; gtk_text_buffer_get_iter_at_child_anchor (get_buffer (text_view), &child_loc, child->anchor); gtk_text_layout_validate_yrange (text_view->layout, &child_loc, 0, 1); } else { } tmp_list = g_slist_next (tmp_list); } } static void gtk_text_view_size_allocate (GtkWidget *widget, GtkAllocation *allocation) { GtkTextView *text_view; GtkTextIter first_para; gint y; GtkAdjustment *vadj; gboolean yoffset_changed = FALSE; gint width, height; GdkRectangle text_rect; GdkRectangle left_rect; GdkRectangle right_rect; GdkRectangle top_rect; GdkRectangle bottom_rect; text_view = GTK_TEXT_VIEW (widget); widget->allocation = *allocation; if (GTK_WIDGET_REALIZED (widget)) { gdk_window_move_resize (widget->window, allocation->x, allocation->y, allocation->width, allocation->height); } /* distribute width/height among child windows. Ensure all * windows get at least a 1x1 allocation. */ width = allocation->width - FOCUS_EDGE_WIDTH * 2; if (text_view->left_window) left_rect.width = text_view->left_window->requisition.width; else left_rect.width = 1; width -= left_rect.width; if (text_view->right_window) right_rect.width = text_view->right_window->requisition.width; else right_rect.width = 1; width -= right_rect.width; text_rect.width = MAX (1, width); top_rect.width = text_rect.width; bottom_rect.width = text_rect.width; height = allocation->height - FOCUS_EDGE_WIDTH * 2; if (text_view->top_window) top_rect.height = text_view->top_window->requisition.height; else top_rect.height = 1; height -= top_rect.height; if (text_view->bottom_window) bottom_rect.height = text_view->bottom_window->requisition.height; else bottom_rect.height = 1; height -= bottom_rect.height; text_rect.height = MAX (1, height); left_rect.height = text_rect.height; right_rect.height = text_rect.height; /* Origins */ left_rect.x = FOCUS_EDGE_WIDTH; top_rect.y = FOCUS_EDGE_WIDTH; text_rect.x = left_rect.x + left_rect.width; text_rect.y = top_rect.y + top_rect.height; left_rect.y = text_rect.y; right_rect.y = text_rect.y; top_rect.x = text_rect.x; bottom_rect.x = text_rect.x; right_rect.x = text_rect.x + text_rect.width; bottom_rect.y = text_rect.y + text_rect.height; text_window_size_allocate (text_view->text_window, &text_rect); if (text_view->left_window) text_window_size_allocate (text_view->left_window, &left_rect); if (text_view->right_window) text_window_size_allocate (text_view->right_window, &right_rect); if (text_view->top_window) text_window_size_allocate (text_view->top_window, &top_rect); if (text_view->bottom_window) text_window_size_allocate (text_view->bottom_window, &bottom_rect); gtk_text_view_ensure_layout (text_view); gtk_text_layout_set_screen_width (text_view->layout, SCREEN_WIDTH (text_view)); gtk_text_view_validate_children (text_view); gtk_text_view_validate_onscreen (text_view); gtk_text_view_scroll_calc_now (text_view); /* Now adjust the value of the adjustment to keep the cursor at the * same place in the buffer */ gtk_text_view_get_first_para_iter (text_view, &first_para); gtk_text_layout_get_line_yrange (text_view->layout, &first_para, &y, NULL); y += text_view->first_para_pixels; /* Ensure h/v adj exist */ get_hadjustment (text_view); get_vadjustment (text_view); vadj = text_view->vadjustment; if (y > vadj->upper - vadj->page_size) y = MAX (0, vadj->upper - vadj->page_size); if (y != text_view->yoffset) { vadj->value = text_view->yoffset = y; yoffset_changed = TRUE; } text_view->hadjustment->page_size = SCREEN_WIDTH (text_view); text_view->hadjustment->page_increment = SCREEN_WIDTH (text_view) / 2; text_view->hadjustment->lower = 0; text_view->hadjustment->upper = MAX (SCREEN_WIDTH (text_view), text_view->width); gtk_signal_emit_by_name (GTK_OBJECT (text_view->hadjustment), "changed"); text_view->vadjustment->page_size = SCREEN_HEIGHT (text_view); text_view->vadjustment->page_increment = SCREEN_HEIGHT (text_view) / 2; text_view->vadjustment->lower = 0; text_view->vadjustment->upper = MAX (SCREEN_HEIGHT (text_view), text_view->height); gtk_signal_emit_by_name (GTK_OBJECT (text_view->vadjustment), "changed"); if (yoffset_changed) gtk_adjustment_value_changed (vadj); } static void gtk_text_view_get_first_para_iter (GtkTextView *text_view, GtkTextIter *iter) { gtk_text_buffer_get_iter_at_mark (get_buffer (text_view), iter, text_view->first_para_mark); } static void gtk_text_view_validate_onscreen (GtkTextView *text_view) { GtkWidget *widget = GTK_WIDGET (text_view); if (SCREEN_HEIGHT (widget) > 0) { GtkTextIter first_para; gtk_text_view_get_first_para_iter (text_view, &first_para); gtk_text_layout_validate_yrange (text_view->layout, &first_para, 0, text_view->first_para_pixels + SCREEN_HEIGHT (widget)); } } static gboolean first_validate_callback (gpointer data) { GtkTextView *text_view = data; gtk_text_view_validate_onscreen (text_view); text_view->first_validate_idle = 0; return FALSE; } static gboolean incremental_validate_callback (gpointer data) { GtkTextView *text_view = data; gtk_text_layout_validate (text_view->layout, 2000); if (gtk_text_layout_is_valid (text_view->layout)) { text_view->incremental_validate_idle = 0; return FALSE; } else return TRUE; } static void invalidated_handler (GtkTextLayout *layout, gpointer data) { GtkTextView *text_view; text_view = GTK_TEXT_VIEW (data); if (!text_view->first_validate_idle) text_view->first_validate_idle = g_idle_add_full (GTK_PRIORITY_RESIZE - 1, first_validate_callback, text_view, NULL); if (!text_view->incremental_validate_idle) text_view->incremental_validate_idle = g_idle_add_full (GDK_PRIORITY_REDRAW + 1, incremental_validate_callback, text_view, NULL); } static void changed_handler (GtkTextLayout *layout, gint start_y, gint old_height, gint new_height, gpointer data) { GtkTextView *text_view; GtkWidget *widget; GdkRectangle visible_rect; GdkRectangle redraw_rect; text_view = GTK_TEXT_VIEW (data); widget = GTK_WIDGET (data); if (GTK_WIDGET_REALIZED (text_view)) { gtk_text_view_get_visible_rect (text_view, &visible_rect); redraw_rect.x = visible_rect.x; redraw_rect.width = visible_rect.width; redraw_rect.y = start_y; if (old_height == new_height) redraw_rect.height = old_height; else redraw_rect.height = MAX (0, visible_rect.y + visible_rect.height - start_y); if (gdk_rectangle_intersect (&redraw_rect, &visible_rect, &redraw_rect)) { /* text_window_invalidate_rect() takes buffer coordinates */ text_window_invalidate_rect (text_view->text_window, &redraw_rect); if (text_view->left_window) text_window_invalidate_rect (text_view->left_window, &redraw_rect); if (text_view->right_window) text_window_invalidate_rect (text_view->right_window, &redraw_rect); if (text_view->top_window) text_window_invalidate_rect (text_view->top_window, &redraw_rect); if (text_view->bottom_window) text_window_invalidate_rect (text_view->bottom_window, &redraw_rect); } } if (old_height != new_height) { gboolean yoffset_changed = FALSE; GSList *tmp_list; if (start_y + old_height <= text_view->yoffset - text_view->first_para_pixels) { text_view->yoffset += new_height - old_height; get_vadjustment (text_view)->value = text_view->yoffset; yoffset_changed = TRUE; } if (yoffset_changed) gtk_adjustment_value_changed (get_vadjustment (text_view)); /* FIXME be smarter about which anchored widgets we update */ tmp_list = text_view->children; while (tmp_list != NULL) { GtkTextViewChild *child = tmp_list->data; if (child->anchor) gtk_text_view_update_child_allocation (text_view, child); tmp_list = g_slist_next (tmp_list); } } gtk_text_view_scroll_calc_now (text_view); } static void gtk_text_view_realize (GtkWidget *widget) { GtkTextView *text_view; GdkWindowAttr attributes; gint attributes_mask; GSList *tmp_list; text_view = GTK_TEXT_VIEW (widget); GTK_WIDGET_SET_FLAGS (text_view, GTK_REALIZED); attributes.window_type = GDK_WINDOW_CHILD; attributes.x = widget->allocation.x; attributes.y = widget->allocation.y; attributes.width = widget->allocation.width; attributes.height = widget->allocation.height; attributes.wclass = GDK_INPUT_OUTPUT; attributes.visual = gtk_widget_get_visual (widget); attributes.colormap = gtk_widget_get_colormap (widget); attributes.event_mask = GDK_VISIBILITY_NOTIFY_MASK | GDK_EXPOSURE_MASK; attributes_mask = GDK_WA_X | GDK_WA_Y | GDK_WA_VISUAL | GDK_WA_COLORMAP; widget->window = gdk_window_new (gtk_widget_get_parent_window (widget), &attributes, attributes_mask); gdk_window_set_user_data (widget->window, widget); /* must come before text_window_realize calls */ widget->style = gtk_style_attach (widget->style, widget->window); gdk_window_set_background (widget->window, &widget->style->bg[GTK_WIDGET_STATE (widget)]); text_window_realize (text_view->text_window, widget->window); if (text_view->left_window) text_window_realize (text_view->left_window, widget->window); if (text_view->top_window) text_window_realize (text_view->top_window, widget->window); if (text_view->right_window) text_window_realize (text_view->right_window, widget->window); if (text_view->bottom_window) text_window_realize (text_view->bottom_window, widget->window); gtk_text_view_ensure_layout (text_view); } static void gtk_text_view_unrealize (GtkWidget *widget) { GtkTextView *text_view; GSList *tmp_list; text_view = GTK_TEXT_VIEW (widget); if (text_view->first_validate_idle) { g_source_remove (text_view->first_validate_idle); text_view->first_validate_idle = 0; } if (text_view->incremental_validate_idle) { g_source_remove (text_view->incremental_validate_idle); text_view->incremental_validate_idle = 0; } if (text_view->popup_menu) { gtk_widget_destroy (text_view->popup_menu); text_view->popup_menu = NULL; } text_window_unrealize (text_view->text_window); if (text_view->left_window) text_window_unrealize (text_view->left_window); if (text_view->top_window) text_window_unrealize (text_view->top_window); if (text_view->right_window) text_window_unrealize (text_view->right_window); if (text_view->bottom_window) text_window_unrealize (text_view->bottom_window); gtk_text_view_destroy_layout (text_view); (* GTK_WIDGET_CLASS (parent_class)->unrealize) (widget); } static void gtk_text_view_style_set (GtkWidget *widget, GtkStyle *previous_style) { GtkTextView *text_view = GTK_TEXT_VIEW (widget); if (GTK_WIDGET_REALIZED (widget)) { gdk_window_set_background (widget->window, &widget->style->bg[GTK_WIDGET_STATE (widget)]); gdk_window_set_background (text_view->text_window->bin_window, &widget->style->base[GTK_WIDGET_STATE (widget)]); if (text_view->left_window) gdk_window_set_background (text_view->left_window->bin_window, &widget->style->bg[GTK_WIDGET_STATE (widget)]); if (text_view->right_window) gdk_window_set_background (text_view->right_window->bin_window, &widget->style->bg[GTK_WIDGET_STATE (widget)]); if (text_view->top_window) gdk_window_set_background (text_view->top_window->bin_window, &widget->style->bg[GTK_WIDGET_STATE (widget)]); if (text_view->bottom_window) gdk_window_set_background (text_view->bottom_window->bin_window, &widget->style->bg[GTK_WIDGET_STATE (widget)]); gtk_text_view_set_attributes_from_style (text_view, text_view->layout->default_style, widget->style); gtk_text_layout_default_style_changed (text_view->layout); } } static void gtk_text_view_direction_changed (GtkWidget *widget, GtkTextDirection previous_direction) { GtkTextView *text_view = GTK_TEXT_VIEW (widget); if (text_view->layout) { text_view->layout->default_style->direction = gtk_widget_get_direction (widget); gtk_text_layout_default_style_changed (text_view->layout); } } /* * Events */ static gboolean get_event_coordinates (GdkEvent *event, gint *x, gint *y) { if (event) switch (event->type) { case GDK_MOTION_NOTIFY: *x = event->motion.x; *y = event->motion.y; return TRUE; break; case GDK_BUTTON_PRESS: case GDK_2BUTTON_PRESS: case GDK_3BUTTON_PRESS: case GDK_BUTTON_RELEASE: *x = event->button.x; *y = event->button.y; return TRUE; break; case GDK_KEY_PRESS: case GDK_KEY_RELEASE: case GDK_ENTER_NOTIFY: case GDK_LEAVE_NOTIFY: case GDK_PROPERTY_NOTIFY: case GDK_SELECTION_CLEAR: case GDK_SELECTION_REQUEST: case GDK_SELECTION_NOTIFY: case GDK_PROXIMITY_IN: case GDK_PROXIMITY_OUT: case GDK_DRAG_ENTER: case GDK_DRAG_LEAVE: case GDK_DRAG_MOTION: case GDK_DRAG_STATUS: case GDK_DROP_START: case GDK_DROP_FINISHED: default: return FALSE; break; } return FALSE; } static gint emit_event_on_tags (GtkWidget *widget, GdkEvent *event, GtkTextIter *iter) { GSList *tags; GSList *tmp; gint retval = FALSE; GtkTextView *text_view; text_view = GTK_TEXT_VIEW (widget); tags = gtk_text_iter_get_tags (iter); tmp = tags; while (tmp != NULL) { GtkTextTag *tag = tmp->data; if (gtk_text_tag_event (tag, G_OBJECT (widget), event, iter)) { retval = TRUE; break; } tmp = g_slist_next (tmp); } g_slist_free (tags); return retval; } static gint gtk_text_view_event (GtkWidget *widget, GdkEvent *event) { GtkTextView *text_view; gint x = 0, y = 0; text_view = GTK_TEXT_VIEW (widget); if (text_view->layout == NULL || get_buffer (text_view) == NULL) return FALSE; if (event->any.window != text_view->text_window->bin_window) return FALSE; if (get_event_coordinates (event, &x, &y)) { GtkTextIter iter; x += text_view->xoffset; y += text_view->yoffset; /* FIXME this is slow and we do it twice per event. My favorite solution is to have GtkTextLayout cache the last couple lookups. */ gtk_text_layout_get_iter_at_pixel (text_view->layout, &iter, x, y); return emit_event_on_tags (widget, event, &iter); } else if (event->type == GDK_KEY_PRESS || event->type == GDK_KEY_RELEASE) { GtkTextMark *insert; GtkTextIter iter; insert = gtk_text_buffer_get_mark (get_buffer (text_view), "insert"); gtk_text_buffer_get_iter_at_mark (get_buffer (text_view), &iter, insert); return emit_event_on_tags (widget, event, &iter); } else return FALSE; } static gint gtk_text_view_key_press_event (GtkWidget *widget, GdkEventKey *event) { gint retval = FALSE; GtkTextView *text_view = GTK_TEXT_VIEW (widget); if (text_view->layout == NULL || get_buffer (text_view) == NULL) return FALSE; if (gtk_im_context_filter_keypress (text_view->im_context, event)) { text_view->need_im_reset = TRUE; retval = TRUE; } else if (GTK_WIDGET_CLASS (parent_class)->key_press_event && GTK_WIDGET_CLASS (parent_class)->key_press_event (widget, event)) retval = TRUE; else if (event->keyval == GDK_Return) { gtk_text_buffer_insert_interactive_at_cursor (get_buffer (text_view), "\n", 1, text_view->editable); gtk_text_view_scroll_to_mark (text_view, gtk_text_buffer_get_mark (get_buffer (text_view), "insert"), 0); retval = TRUE; } /* Pass through Tab as literal tab, unless Control is held down */ else if (event->keyval == GDK_Tab && !(event->state & GDK_CONTROL_MASK)) { gtk_text_buffer_insert_interactive_at_cursor (get_buffer (text_view), "\t", 1, text_view->editable); gtk_text_view_scroll_to_mark (text_view, gtk_text_buffer_get_mark (get_buffer (text_view), "insert"), 0); retval = TRUE; } else retval = FALSE; gtk_text_view_start_cursor_blink (text_view, TRUE); return retval; } static gint gtk_text_view_key_release_event (GtkWidget *widget, GdkEventKey *event) { return FALSE; } static gint gtk_text_view_button_press_event (GtkWidget *widget, GdkEventButton *event) { GtkTextView *text_view; text_view = GTK_TEXT_VIEW (widget); gtk_widget_grab_focus (widget); if (event->window != text_view->text_window->bin_window) { /* Remove selection if any. */ gtk_text_view_unselect (text_view); return FALSE; } #if 0 /* debug hack */ if (event->button == 3 && (event->state & GDK_CONTROL_MASK) != 0) _gtk_text_buffer_spew (GTK_TEXT_VIEW (widget)->buffer); else if (event->button == 3) gtk_text_layout_spew (GTK_TEXT_VIEW (widget)->layout); #endif if (event->type == GDK_BUTTON_PRESS) { gtk_text_view_reset_im_context (text_view); if (event->button == 1) { /* If we're in the selection, start a drag copy/move of the * selection; otherwise, start creating a new selection. */ GtkTextIter iter; GtkTextIter start, end; gtk_text_layout_get_iter_at_pixel (text_view->layout, &iter, event->x + text_view->xoffset, event->y + text_view->yoffset); if (gtk_text_buffer_get_selection_bounds (get_buffer (text_view), &start, &end) && gtk_text_iter_in_range (&iter, &start, &end)) { text_view->drag_start_x = event->x; text_view->drag_start_y = event->y; } else { gtk_text_view_start_selection_drag (text_view, &iter, event); } return TRUE; } else if (event->button == 2) { GtkTextIter iter; gtk_text_layout_get_iter_at_pixel (text_view->layout, &iter, event->x + text_view->xoffset, event->y + text_view->yoffset); gtk_text_buffer_paste_primary (get_buffer (text_view), &iter, text_view->editable); return TRUE; } else if (event->button == 3) { gtk_text_view_popup_menu (text_view, event); } } else if ((event->type == GDK_2BUTTON_PRESS || event->type == GDK_3BUTTON_PRESS) && event->button == 1) { GtkTextIter start, end; /* End the selection drag, otherwise we'd clear the new * word/line selection on button release */ gtk_text_view_end_selection_drag (text_view, event); gtk_text_layout_get_iter_at_pixel (text_view->layout, &start, event->x + text_view->xoffset, event->y + text_view->yoffset); end = start; if (event->type == GDK_2BUTTON_PRESS) { if (gtk_text_iter_inside_word (&start)) { if (!gtk_text_iter_starts_word (&start)) gtk_text_iter_backward_word_start (&start); if (!gtk_text_iter_ends_word (&end)) gtk_text_iter_forward_word_end (&end); } } else if (event->type == GDK_3BUTTON_PRESS) { if (gtk_text_view_starts_display_line (text_view, &start)) { /* If on a display line boundary, we assume the user * clicked off the end of a line and we therefore select * the line before the boundary. */ gtk_text_view_backward_display_line_start (text_view, &start); } else { /* start isn't on the start of a line, so we move it to the * start, and move end to the end unless it's already there. */ gtk_text_view_backward_display_line_start (text_view, &start); if (!gtk_text_view_starts_display_line (text_view, &end)) gtk_text_view_forward_display_line_end (text_view, &end); } } gtk_text_buffer_move_mark (get_buffer (text_view), gtk_text_buffer_get_selection_bound (get_buffer (text_view)), &start); gtk_text_buffer_move_mark (get_buffer (text_view), gtk_text_buffer_get_insert (get_buffer (text_view)), &end); text_view->just_selected_element = TRUE; return TRUE; } return FALSE; } static gint gtk_text_view_button_release_event (GtkWidget *widget, GdkEventButton *event) { GtkTextView *text_view; text_view = GTK_TEXT_VIEW (widget); if (event->window != text_view->text_window->bin_window) return FALSE; if (event->button == 1) { if (text_view->drag_start_x >= 0) { text_view->drag_start_x = -1; text_view->drag_start_y = -1; } if (gtk_text_view_end_selection_drag (GTK_TEXT_VIEW (widget), event)) return TRUE; else if (text_view->just_selected_element) { text_view->just_selected_element = FALSE; return FALSE; } else { /* Unselect everything; probably we were dragging, or clicked * outside the text. */ gtk_text_view_unselect (text_view); return FALSE; } } return FALSE; } static gint gtk_text_view_focus_in_event (GtkWidget *widget, GdkEventFocus *event) { GtkTextView *text_view = GTK_TEXT_VIEW (widget); GTK_WIDGET_SET_FLAGS (widget, GTK_HAS_FOCUS); gtk_widget_draw_focus (widget); if (text_view->cursor_visible && text_view->layout) { gtk_text_layout_set_cursor_visible (text_view->layout, TRUE); gtk_text_view_start_cursor_blink (text_view, FALSE); } text_view->need_im_reset = TRUE; gtk_im_context_focus_in (GTK_TEXT_VIEW (widget)->im_context); return FALSE; } static gint gtk_text_view_focus_out_event (GtkWidget *widget, GdkEventFocus *event) { GtkTextView *text_view = GTK_TEXT_VIEW (widget); GTK_WIDGET_UNSET_FLAGS (widget, GTK_HAS_FOCUS); gtk_widget_draw_focus (widget); if (text_view->cursor_visible && text_view->layout) { gtk_text_layout_set_cursor_visible (text_view->layout, FALSE); gtk_text_view_stop_cursor_blink (text_view); } text_view->need_im_reset = TRUE; gtk_im_context_focus_out (GTK_TEXT_VIEW (widget)->im_context); return FALSE; } static gint gtk_text_view_motion_event (GtkWidget *widget, GdkEventMotion *event) { GtkTextView *text_view = GTK_TEXT_VIEW (widget); if (event->window == text_view->text_window->bin_window && text_view->drag_start_x >= 0) { gint x, y; gint dx, dy; gdk_window_get_pointer (text_view->text_window->bin_window, &x, &y, NULL); dx = text_view->drag_start_x - x; dy = text_view->drag_start_y - y; if (ABS (dx) > DRAG_THRESHOLD || ABS (dy) > DRAG_THRESHOLD) { GtkTextIter iter; gint buffer_x, buffer_y; gtk_text_view_window_to_buffer_coords (text_view, GTK_TEXT_WINDOW_TEXT, text_view->drag_start_x, text_view->drag_start_y, &buffer_x, &buffer_y); gtk_text_layout_get_iter_at_pixel (text_view->layout, &iter, buffer_x, buffer_y); gtk_text_view_start_selection_dnd (text_view, &iter, event); return TRUE; } } return FALSE; } static void gtk_text_view_paint (GtkWidget *widget, GdkRectangle *area) { GtkTextView *text_view; text_view = GTK_TEXT_VIEW (widget); g_return_if_fail (text_view->layout != NULL); g_return_if_fail (text_view->xoffset >= 0); g_return_if_fail (text_view->yoffset >= 0); gtk_text_view_validate_onscreen (text_view); #if 0 printf ("painting %d,%d %d x %d\n", area->x, area->y, area->width, area->height); #endif gtk_text_layout_draw (text_view->layout, widget, text_view->text_window->bin_window, text_view->xoffset, text_view->yoffset, area->x, area->y, area->width, area->height); } static gint gtk_text_view_expose_event (GtkWidget *widget, GdkEventExpose *event) { if (event->window == gtk_text_view_get_window (GTK_TEXT_VIEW (widget), GTK_TEXT_WINDOW_TEXT)) gtk_text_view_paint (widget, &event->area); if (event->window == widget->window) gtk_widget_draw_focus (widget); return TRUE; } static void gtk_text_view_draw_focus (GtkWidget *widget) { if (GTK_WIDGET_DRAWABLE (widget)) { if (GTK_WIDGET_HAS_FOCUS (widget)) { gtk_paint_focus (widget->style, widget->window, NULL, widget, "textview", 0, 0, widget->allocation.width - 1, widget->allocation.height - 1); } else { gdk_window_clear (widget->window); } } } /* * Container */ static void gtk_text_view_add (GtkContainer *container, GtkWidget *child) { g_return_if_fail (GTK_IS_TEXT_VIEW (container)); g_return_if_fail (GTK_IS_WIDGET (child)); /* This is pretty random. */ gtk_text_view_add_child_in_window (GTK_TEXT_VIEW (container), child, GTK_TEXT_WINDOW_WIDGET, 0, 0); } static void gtk_text_view_remove (GtkContainer *container, GtkWidget *child) { GSList *iter; GtkTextView *text_view; GtkTextViewChild *vc; g_return_if_fail (GTK_IS_TEXT_VIEW (container)); g_return_if_fail (GTK_IS_WIDGET (child)); g_return_if_fail (child->parent == (GtkWidget*) container); text_view = GTK_TEXT_VIEW (container); vc = NULL; iter = text_view->children; while (iter != NULL) { vc = iter->data; if (vc->widget == child) break; iter = g_slist_next (iter); } g_assert (iter != NULL); /* be sure we had the child in the list */ text_view->children = g_slist_remove (text_view->children, vc); gtk_widget_unparent (vc->widget); text_view_child_free (vc); } static void gtk_text_view_forall (GtkContainer *container, gboolean include_internals, GtkCallback callback, gpointer callback_data) { GSList *iter; GtkTextView *text_view; g_return_if_fail (GTK_IS_TEXT_VIEW (container)); g_return_if_fail (callback != NULL); text_view = GTK_TEXT_VIEW (container); iter = text_view->children; while (iter != NULL) { GtkTextViewChild *vc = iter->data; (* callback) (vc->widget, callback_data); iter = g_slist_next (iter); } } /* Note that CURSOR_ON_TIME is effectively added to PREBLINK_TIME * because blinking starts with the cursor turned on. */ #define PREBLINK_TIME 300 #define CURSOR_ON_TIME 800 #define CURSOR_OFF_TIME 400 /* * preblink! */ static gint preblink_cb (gpointer data) { GtkTextView *text_view = GTK_TEXT_VIEW (data); text_view->preblink_timeout = 0; gtk_text_view_start_cursor_blink (text_view, FALSE); /* Remove ourselves */ return FALSE; } /* * Blink! */ static gint blink_cb (gpointer data) { GtkTextView *text_view = GTK_TEXT_VIEW (data); gboolean visible; g_assert (text_view->layout); g_assert (GTK_WIDGET_HAS_FOCUS (text_view)); g_assert (text_view->cursor_visible); visible = gtk_text_layout_get_cursor_visible (text_view->layout); if (visible) text_view->blink_timeout = gtk_timeout_add (CURSOR_OFF_TIME, blink_cb, text_view); else text_view->blink_timeout = gtk_timeout_add (CURSOR_ON_TIME, blink_cb, text_view); gtk_text_layout_set_cursor_visible (text_view->layout, !visible); /* Remove ourselves */ return FALSE; } static void gtk_text_view_start_cursor_blink(GtkTextView *text_view, gboolean with_delay) { if (!text_view->cursor_visible) return; if (text_view->preblink_timeout != 0) { gtk_timeout_remove (text_view->preblink_timeout); text_view->preblink_timeout = 0; } if (with_delay) { if (text_view->blink_timeout != 0) { gtk_timeout_remove (text_view->blink_timeout); text_view->blink_timeout = 0; } gtk_text_layout_set_cursor_visible (text_view->layout, TRUE); text_view->preblink_timeout = gtk_timeout_add (PREBLINK_TIME, preblink_cb, text_view); } else { if (text_view->blink_timeout == 0) { gtk_text_layout_set_cursor_visible (text_view->layout, TRUE); text_view->blink_timeout = gtk_timeout_add (CURSOR_ON_TIME, blink_cb, text_view); } } } static void gtk_text_view_stop_cursor_blink (GtkTextView *text_view) { if (text_view->preblink_timeout) { gtk_timeout_remove (text_view->preblink_timeout); text_view->preblink_timeout = 0; } if (text_view->blink_timeout) { gtk_timeout_remove (text_view->blink_timeout); text_view->blink_timeout = 0; } } /* * Key binding handlers */ static void gtk_text_view_move_iter_by_lines (GtkTextView *text_view, GtkTextIter *newplace, gint count) { while (count < 0) { gtk_text_layout_move_iter_to_previous_line (text_view->layout, newplace); count++; } while (count > 0) { gtk_text_layout_move_iter_to_next_line (text_view->layout, newplace); count--; } } static void gtk_text_view_move_cursor (GtkTextView *text_view, GtkMovementStep step, gint count, gboolean extend_selection) { GtkTextIter insert; GtkTextIter newplace; gint cursor_x_pos = 0; gtk_text_view_reset_im_context (text_view); if (step == GTK_MOVEMENT_PAGES) { gtk_text_view_scroll_pages (text_view, count); gtk_text_view_start_cursor_blink (text_view, TRUE); return; } gtk_text_buffer_get_iter_at_mark (get_buffer (text_view), &insert, gtk_text_buffer_get_mark (get_buffer (text_view), "insert")); newplace = insert; if (step == GTK_MOVEMENT_DISPLAY_LINES) gtk_text_view_get_virtual_cursor_pos (text_view, &cursor_x_pos, NULL); switch (step) { case GTK_MOVEMENT_CHARS: gtk_text_iter_forward_chars (&newplace, count); break; case GTK_MOVEMENT_POSITIONS: gtk_text_layout_move_iter_visually (text_view->layout, &newplace, count); break; case GTK_MOVEMENT_WORDS: if (count < 0) gtk_text_iter_backward_word_starts (&newplace, -count); else if (count > 0) gtk_text_iter_forward_word_ends (&newplace, count); break; case GTK_MOVEMENT_DISPLAY_LINES: gtk_text_view_move_iter_by_lines (text_view, &newplace, count); gtk_text_layout_move_iter_to_x (text_view->layout, &newplace, cursor_x_pos); break; case GTK_MOVEMENT_DISPLAY_LINE_ENDS: if (count > 1) gtk_text_view_move_iter_by_lines (text_view, &newplace, --count); else if (count < -1) gtk_text_view_move_iter_by_lines (text_view, &newplace, ++count); if (count != 0) gtk_text_layout_move_iter_to_line_end (text_view->layout, &newplace, count); break; case GTK_MOVEMENT_PARAGRAPHS: /* This should almost certainly instead be doing the parallel thing to WORD */ /* gtk_text_iter_down_lines (&newplace, count); */ /* FIXME */ break; case GTK_MOVEMENT_PARAGRAPH_ENDS: if (count > 0) gtk_text_iter_forward_to_newline (&newplace); else if (count < 0) gtk_text_iter_set_line_offset (&newplace, 0); break; case GTK_MOVEMENT_BUFFER_ENDS: if (count > 0) gtk_text_buffer_get_last_iter (get_buffer (text_view), &newplace); else if (count < 0) gtk_text_buffer_get_iter_at_offset (get_buffer (text_view), &newplace, 0); break; default: break; } if (!gtk_text_iter_equal (&insert, &newplace)) { if (extend_selection) gtk_text_buffer_move_mark (get_buffer (text_view), gtk_text_buffer_get_mark (get_buffer (text_view), "insert"), &newplace); else gtk_text_buffer_place_cursor (get_buffer (text_view), &newplace); gtk_text_view_scroll_to_mark (text_view, gtk_text_buffer_get_mark (get_buffer (text_view), "insert"), 0); if (step == GTK_MOVEMENT_DISPLAY_LINES) { gtk_text_view_set_virtual_cursor_pos (text_view, cursor_x_pos, -1); } } gtk_text_view_start_cursor_blink (text_view, TRUE); } static void gtk_text_view_set_anchor (GtkTextView *text_view) { GtkTextIter insert; gtk_text_buffer_get_iter_at_mark (get_buffer (text_view), &insert, gtk_text_buffer_get_mark (get_buffer (text_view), "insert")); gtk_text_buffer_create_mark (get_buffer (text_view), "anchor", &insert, TRUE); } static void gtk_text_view_scroll_pages (GtkTextView *text_view, gint count) { gfloat newval; GtkAdjustment *adj; gint cursor_x_pos, cursor_y_pos; GtkTextIter new_insert; GtkTextIter anchor; gint y0, y1; g_return_if_fail (text_view->vadjustment != NULL); adj = text_view->vadjustment; /* Validate the region that will be brought into view by the cursor motion */ if (count < 0) { gtk_text_view_get_first_para_iter (text_view, &anchor); y0 = adj->page_size; y1 = adj->page_size + count * adj->page_increment; } else { gtk_text_view_get_first_para_iter (text_view, &anchor); y0 = count * adj->page_increment + adj->page_size; y1 = 0; } gtk_text_layout_validate_yrange (text_view->layout, &anchor, y0, y1); gtk_text_view_get_virtual_cursor_pos (text_view, &cursor_x_pos, &cursor_y_pos); newval = adj->value; newval += count * adj->page_increment; cursor_y_pos += newval - adj->value; set_adjustment_clamped (adj, newval); gtk_text_layout_get_iter_at_pixel (text_view->layout, &new_insert, cursor_x_pos, cursor_y_pos); clamp_iter_onscreen (text_view, &new_insert); gtk_text_buffer_place_cursor (get_buffer (text_view), &new_insert); gtk_text_view_set_virtual_cursor_pos (text_view, cursor_x_pos, cursor_y_pos); /* Adjust to have the cursor _entirely_ onscreen, move_mark_onscreen * only guarantees 1 pixel onscreen. */ gtk_text_view_scroll_to_mark (text_view, gtk_text_buffer_get_mark (get_buffer (text_view), "insert"), 0); } static gboolean whitespace (gunichar ch, gpointer user_data) { return (ch == ' ' || ch == '\t'); } static gboolean not_whitespace (gunichar ch, gpointer user_data) { return !whitespace (ch, user_data); } static gboolean find_whitepace_region (const GtkTextIter *center, GtkTextIter *start, GtkTextIter *end) { *start = *center; *end = *center; if (gtk_text_iter_backward_find_char (start, not_whitespace, NULL, NULL)) gtk_text_iter_next_char (start); /* we want the first whitespace... */ if (whitespace (gtk_text_iter_get_char (end), NULL)) gtk_text_iter_forward_find_char (end, not_whitespace, NULL, NULL); return !gtk_text_iter_equal (start, end); } static void gtk_text_view_insert_at_cursor (GtkTextView *text_view, const gchar *str) { gtk_text_buffer_insert_interactive_at_cursor (get_buffer (text_view), str, -1, text_view->editable); } static void gtk_text_view_delete_from_cursor (GtkTextView *text_view, GtkDeleteType type, gint count) { GtkTextIter insert; GtkTextIter start; GtkTextIter end; gboolean leave_one = FALSE; gtk_text_view_reset_im_context (text_view); if (type == GTK_DELETE_CHARS) { /* Char delete deletes the selection, if one exists */ if (gtk_text_buffer_delete_selection (get_buffer (text_view), TRUE, text_view->editable)) return; } gtk_text_buffer_get_iter_at_mark (get_buffer (text_view), &insert, gtk_text_buffer_get_mark (get_buffer (text_view), "insert")); start = insert; end = insert; switch (type) { case GTK_DELETE_CHARS: gtk_text_iter_forward_chars (&end, count); break; case GTK_DELETE_WORD_ENDS: if (count > 0) gtk_text_iter_forward_word_ends (&end, count); else if (count < 0) gtk_text_iter_backward_word_starts (&start, 0 - count); break; case GTK_DELETE_WORDS: break; case GTK_DELETE_DISPLAY_LINE_ENDS: break; case GTK_DELETE_DISPLAY_LINES: break; case GTK_DELETE_PARAGRAPH_ENDS: /* If we're already at a newline, we need to * simply delete that newline, instead of * moving to the next one. */ if (gtk_text_iter_get_char (&end) == '\n') { gtk_text_iter_next_char (&end); --count; } while (count > 0) { if (!gtk_text_iter_forward_to_newline (&end)) break; --count; } /* FIXME figure out what a negative count means and support that */ break; case GTK_DELETE_PARAGRAPHS: if (count > 0) { gtk_text_iter_set_line_offset (&start, 0); gtk_text_iter_forward_to_newline (&end); /* Do the lines beyond the first. */ while (count > 1) { gtk_text_iter_forward_to_newline (&end); --count; } } /* FIXME negative count? */ break; case GTK_DELETE_WHITESPACE: { find_whitepace_region (&insert, &start, &end); } break; default: break; } if (!gtk_text_iter_equal (&start, &end)) { if (gtk_text_buffer_delete_interactive (get_buffer (text_view), &start, &end, text_view->editable)) { if (leave_one) gtk_text_buffer_insert_interactive_at_cursor (get_buffer (text_view), " ", 1, text_view->editable); } gtk_text_view_scroll_to_mark (text_view, gtk_text_buffer_get_mark (get_buffer (text_view), "insert"), 0); } } static void gtk_text_view_cut_clipboard (GtkTextView *text_view) { gtk_text_buffer_cut_clipboard (get_buffer (text_view), text_view->editable); gtk_text_view_scroll_to_mark (text_view, gtk_text_buffer_get_mark (get_buffer (text_view), "insert"), 0); } static void gtk_text_view_copy_clipboard (GtkTextView *text_view) { gtk_text_buffer_copy_clipboard (get_buffer (text_view)); gtk_text_view_scroll_to_mark (text_view, gtk_text_buffer_get_mark (get_buffer (text_view), "insert"), 0); } static void gtk_text_view_paste_clipboard (GtkTextView *text_view) { gtk_text_buffer_paste_clipboard (get_buffer (text_view), text_view->editable); gtk_text_view_scroll_to_mark (text_view, gtk_text_buffer_get_mark (get_buffer (text_view), "insert"), 0); } static void gtk_text_view_toggle_overwrite (GtkTextView *text_view) { text_view->overwrite_mode = !text_view->overwrite_mode; } /* * Selections */ static void gtk_text_view_unselect (GtkTextView *text_view) { GtkTextIter insert; gtk_text_buffer_get_iter_at_mark (get_buffer (text_view), &insert, gtk_text_buffer_get_mark (get_buffer (text_view), "insert")); gtk_text_buffer_move_mark (get_buffer (text_view), gtk_text_buffer_get_mark (get_buffer (text_view), "selection_bound"), &insert); } static gboolean move_insert_to_pointer_and_scroll (GtkTextView *text_view, gboolean partial_scroll) { gint x, y; GdkModifierType state; GtkTextIter newplace; gint adjust = 0; gboolean in_threshold = FALSE; gdk_window_get_pointer (text_view->text_window->bin_window, &x, &y, &state); /* Adjust movement by how long we've been selecting, to get an acceleration effect. The exact numbers are pretty arbitrary. We have a threshold before we start to accelerate. */ /* uncommenting this printf helps visualize how it works. */ /* printf ("%d\n", text_view->scrolling_accel_factor); */ if (text_view->scrolling_accel_factor > 10) adjust = (text_view->scrolling_accel_factor - 10) * 75; if (y < 0) /* scrolling upward */ adjust = -adjust; /* No adjust if the pointer has moved back inside the window for sure. Also I'm adding a small threshold where no adjust is added, in case you want to do a continuous slow scroll. */ #define SLOW_SCROLL_TH 7 if (x >= (0 - SLOW_SCROLL_TH) && x < (SCREEN_WIDTH (text_view) + SLOW_SCROLL_TH) && y >= (0 - SLOW_SCROLL_TH) && y < (SCREEN_HEIGHT (text_view) + SLOW_SCROLL_TH)) { adjust = 0; in_threshold = TRUE; } gtk_text_layout_get_iter_at_pixel (text_view->layout, &newplace, x + text_view->xoffset, y + text_view->yoffset + adjust); { gboolean scrolled = FALSE; GtkTextMark *insert_mark = gtk_text_buffer_get_mark (get_buffer (text_view), "insert"); gtk_text_buffer_move_mark (get_buffer (text_view), insert_mark, &newplace); if (partial_scroll) scrolled = gtk_text_view_scroll_to_mark_adjusted (text_view, insert_mark, 0, 0.7); else scrolled = gtk_text_view_scroll_to_mark_adjusted (text_view, insert_mark, 0, 1.0); if (scrolled) { /* We want to avoid rapid jump to super-accelerated when you leave the slow scroll threshold after scrolling for a while. So we slowly decrease accel when scrolling inside the threshold. */ if (in_threshold) { if (text_view->scrolling_accel_factor > 1) text_view->scrolling_accel_factor -= 2; } else text_view->scrolling_accel_factor += 1; } else { /* If we don't scroll we're probably inside the window, but potentially just a bit outside. We decrease acceleration while the user is fooling around inside the window. Acceleration decreases faster than it increases. */ if (text_view->scrolling_accel_factor > 4) text_view->scrolling_accel_factor -= 5; } return scrolled; } } static gint selection_scan_timeout (gpointer data) { GtkTextView *text_view; text_view = GTK_TEXT_VIEW (data); if (move_insert_to_pointer_and_scroll (text_view, TRUE)) { return TRUE; /* remain installed. */ } else { text_view->selection_drag_scan_timeout = 0; return FALSE; /* remove ourselves */ } } static gint selection_motion_event_handler (GtkTextView *text_view, GdkEventMotion *event, gpointer data) { if (move_insert_to_pointer_and_scroll (text_view, TRUE)) { /* If we had to scroll offscreen, insert a timeout to do so again. Note that in the timeout, even if the mouse doesn't move, due to this scroll xoffset/yoffset will have changed and we'll need to scroll again. */ if (text_view->selection_drag_scan_timeout != 0) /* reset on every motion event */ gtk_timeout_remove (text_view->selection_drag_scan_timeout); text_view->selection_drag_scan_timeout = gtk_timeout_add (50, selection_scan_timeout, text_view); } return TRUE; } static void gtk_text_view_start_selection_drag (GtkTextView *text_view, const GtkTextIter *iter, GdkEventButton *button) { GtkTextIter newplace; g_return_if_fail (text_view->selection_drag_handler == 0); gtk_grab_add (GTK_WIDGET (text_view)); text_view->scrolling_accel_factor = 0; newplace = *iter; gtk_text_buffer_place_cursor (get_buffer (text_view), &newplace); text_view->selection_drag_handler = gtk_signal_connect (GTK_OBJECT (text_view), "motion_notify_event", GTK_SIGNAL_FUNC (selection_motion_event_handler), NULL); } /* returns whether we were really dragging */ static gboolean gtk_text_view_end_selection_drag (GtkTextView *text_view, GdkEventButton *event) { if (text_view->selection_drag_handler == 0) return FALSE; gtk_signal_disconnect (GTK_OBJECT (text_view), text_view->selection_drag_handler); text_view->selection_drag_handler = 0; text_view->scrolling_accel_factor = 0; if (text_view->selection_drag_scan_timeout != 0) { gtk_timeout_remove (text_view->selection_drag_scan_timeout); text_view->selection_drag_scan_timeout = 0; } /* one last update to current position */ move_insert_to_pointer_and_scroll (text_view, FALSE); gtk_grab_remove (GTK_WIDGET (text_view)); return TRUE; } /* * Layout utils */ static void gtk_text_view_set_adjustment_upper (GtkAdjustment *adj, gfloat upper) { if (upper != adj->upper) { gfloat min = MAX (0., upper - adj->page_size); gboolean value_changed = FALSE; adj->upper = upper; if (adj->value > min) { adj->value = min; value_changed = TRUE; } gtk_signal_emit_by_name (GTK_OBJECT (adj), "changed"); if (value_changed) gtk_signal_emit_by_name (GTK_OBJECT (adj), "value_changed"); } } static void gtk_text_view_scroll_calc_now (GtkTextView *text_view) { gint width = 0, height = 0; gtk_text_view_ensure_layout (text_view); gtk_text_layout_set_screen_width (text_view->layout, SCREEN_WIDTH (text_view)); gtk_text_layout_get_size (text_view->layout, &width, &height); if (text_view->width != width || text_view->height != height) { text_view->width = width; text_view->height = height; gtk_text_view_set_adjustment_upper (get_hadjustment (text_view), MAX (SCREEN_WIDTH (text_view), width)); gtk_text_view_set_adjustment_upper (get_vadjustment (text_view), MAX (SCREEN_HEIGHT (text_view), height)); /* hadj/vadj exist since we called get_hadjustment/get_vadjustment above */ /* Set up the step sizes; we'll say that a page is our allocation minus one step, and a step is 1/10 of our allocation. */ text_view->hadjustment->step_increment = SCREEN_WIDTH (text_view) / 10.0; text_view->hadjustment->page_increment = SCREEN_WIDTH (text_view) * 0.9; text_view->vadjustment->step_increment = SCREEN_HEIGHT (text_view) / 10.0; text_view->vadjustment->page_increment = SCREEN_HEIGHT (text_view) * 0.9; } } static void gtk_text_view_set_attributes_from_style (GtkTextView *text_view, GtkTextAttributes *values, GtkStyle *style) { values->appearance.bg_color = style->base[GTK_STATE_NORMAL]; values->appearance.fg_color = style->fg[GTK_STATE_NORMAL]; if (values->font.family_name) g_free (values->font.family_name); values->font = *style->font_desc; values->font.family_name = g_strdup (style->font_desc->family_name); } static void gtk_text_view_ensure_layout (GtkTextView *text_view) { GtkWidget *widget; widget = GTK_WIDGET (text_view); if (text_view->layout == NULL) { GtkTextAttributes *style; PangoContext *ltr_context, *rtl_context; GSList *tmp_list; text_view->layout = gtk_text_layout_new (); gtk_signal_connect (GTK_OBJECT (text_view->layout), "invalidated", GTK_SIGNAL_FUNC (invalidated_handler), text_view); gtk_signal_connect (GTK_OBJECT (text_view->layout), "changed", GTK_SIGNAL_FUNC (changed_handler), text_view); gtk_signal_connect (GTK_OBJECT (text_view->layout), "allocate_child", GTK_SIGNAL_FUNC (gtk_text_view_child_allocated), text_view); if (get_buffer (text_view)) gtk_text_layout_set_buffer (text_view->layout, get_buffer (text_view)); if ((GTK_WIDGET_HAS_FOCUS (text_view) && text_view->cursor_visible)) gtk_text_view_start_cursor_blink (text_view, FALSE); else gtk_text_layout_set_cursor_visible (text_view->layout, FALSE); ltr_context = gtk_widget_create_pango_context (GTK_WIDGET (text_view)); pango_context_set_base_dir (ltr_context, PANGO_DIRECTION_LTR); rtl_context = gtk_widget_create_pango_context (GTK_WIDGET (text_view)); pango_context_set_base_dir (rtl_context, PANGO_DIRECTION_RTL); gtk_text_layout_set_contexts (text_view->layout, ltr_context, rtl_context); g_object_unref (G_OBJECT (ltr_context)); g_object_unref (G_OBJECT (rtl_context)); style = gtk_text_attributes_new (); gtk_widget_ensure_style (widget); gtk_text_view_set_attributes_from_style (text_view, style, widget->style); style->pixels_above_lines = text_view->pixels_above_lines; style->pixels_below_lines = text_view->pixels_below_lines; style->pixels_inside_wrap = text_view->pixels_inside_wrap; style->left_margin = text_view->left_margin; style->right_margin = text_view->right_margin; style->indent = text_view->indent; style->tabs = text_view->tabs ? pango_tab_array_copy (text_view->tabs) : NULL; style->wrap_mode = text_view->wrap_mode; style->justify = text_view->justify; style->direction = gtk_widget_get_direction (GTK_WIDGET (text_view)); gtk_text_layout_set_default_style (text_view->layout, style); gtk_text_attributes_unref (style); /* Set layout for all anchored children */ tmp_list = text_view->children; while (tmp_list != NULL) { GtkTextViewChild *vc = tmp_list->data; if (vc->anchor) { gtk_text_anchored_child_set_layout (vc->widget, text_view->layout); /* vc may now be invalid! */ } tmp_list = g_slist_next (tmp_list); } } } static void gtk_text_view_destroy_layout (GtkTextView *text_view) { if (text_view->layout) { /* Remove layout from all anchored children */ GSList *tmp_list; tmp_list = text_view->children; while (tmp_list != NULL) { GtkTextViewChild *vc = tmp_list->data; if (vc->anchor) { gtk_text_anchored_child_set_layout (vc->widget, NULL); /* vc may now be invalid! */ } tmp_list = g_slist_next (tmp_list); } gtk_text_view_stop_cursor_blink (text_view); gtk_text_view_end_selection_drag (text_view, NULL); gtk_signal_disconnect_by_func (GTK_OBJECT (text_view->layout), invalidated_handler, text_view); gtk_signal_disconnect_by_func (GTK_OBJECT (text_view->layout), changed_handler, text_view); gtk_object_unref (GTK_OBJECT (text_view->layout)); text_view->layout = NULL; } } static void gtk_text_view_reset_im_context (GtkTextView *text_view) { if (text_view->need_im_reset) text_view->need_im_reset = 0; gtk_im_context_reset (text_view->im_context); } /* * DND feature */ static void gtk_text_view_start_selection_dnd (GtkTextView *text_view, const GtkTextIter *iter, GdkEventMotion *event) { GdkDragContext *context; GtkTargetList *target_list; text_view->drag_start_x = -1; text_view->drag_start_y = -1; target_list = gtk_target_list_new (target_table, G_N_ELEMENTS (target_table)); context = gtk_drag_begin (GTK_WIDGET (text_view), target_list, GDK_ACTION_COPY | GDK_ACTION_MOVE, 1, (GdkEvent*)event); gtk_target_list_unref (target_list); gtk_drag_set_icon_default (context); /* We're inside the selection, so start without being able * to accept the drag. */ gdk_drag_status (context, 0, event->time); gtk_text_mark_set_visible (text_view->dnd_mark, FALSE); } static void gtk_text_view_drag_begin (GtkWidget *widget, GdkDragContext *context) { } static void gtk_text_view_drag_end (GtkWidget *widget, GdkDragContext *context) { GtkTextView *text_view; text_view = GTK_TEXT_VIEW (widget); gtk_text_mark_set_visible (text_view->dnd_mark, FALSE); } static void gtk_text_view_drag_data_get (GtkWidget *widget, GdkDragContext *context, GtkSelectionData *selection_data, guint info, guint time) { GtkTextView *text_view; text_view = GTK_TEXT_VIEW (widget); if (selection_data->target == gdk_atom_intern ("GTK_TEXT_BUFFER_CONTENTS", FALSE)) { GtkTextBuffer *buffer = gtk_text_view_get_buffer (text_view); gtk_selection_data_set (selection_data, gdk_atom_intern ("GTK_TEXT_BUFFER_CONTENTS", FALSE), 8, /* bytes */ (void*)&buffer, sizeof (buffer)); } else { gchar *str; GtkTextIter start; GtkTextIter end; str = NULL; if (gtk_text_buffer_get_selection_bounds (get_buffer (text_view), &start, &end)) { /* Extract the selected text */ str = gtk_text_iter_get_visible_text (&start, &end); } if (str) { gtk_selection_data_set_text (selection_data, str); g_free (str); } } } static void gtk_text_view_drag_data_delete (GtkWidget *widget, GdkDragContext *context) { GtkTextView *text_view; text_view = GTK_TEXT_VIEW (widget); gtk_text_buffer_delete_selection (GTK_TEXT_VIEW (widget)->buffer, TRUE, GTK_TEXT_VIEW (widget)->editable); } static void gtk_text_view_drag_leave (GtkWidget *widget, GdkDragContext *context, guint time) { } static gboolean gtk_text_view_drag_motion (GtkWidget *widget, GdkDragContext *context, gint x, gint y, guint time) { GtkTextIter newplace; GtkTextView *text_view; GtkTextIter start; GtkTextIter end; GdkRectangle target_rect; gint bx, by; text_view = GTK_TEXT_VIEW (widget); target_rect = text_view->text_window->allocation; if (x < target_rect.x || y < target_rect.y || x > (target_rect.x + target_rect.width) || y > (target_rect.y + target_rect.height)) return FALSE; /* outside the text window */ gtk_text_view_window_to_buffer_coords (text_view, GTK_TEXT_WINDOW_WIDGET, x, y, &bx, &by); gtk_text_layout_get_iter_at_pixel (text_view->layout, &newplace, bx, by); if (gtk_text_buffer_get_selection_bounds (get_buffer (text_view), &start, &end) && gtk_text_iter_in_range (&newplace, &start, &end)) { /* We're inside the selection. */ gdk_drag_status (context, 0, time); gtk_text_mark_set_visible (text_view->dnd_mark, FALSE); } else { if (gtk_text_iter_editable (&newplace, text_view->editable)) { GtkWidget *source_widget; GdkDragAction suggested_action; suggested_action = context->suggested_action; source_widget = gtk_drag_get_source_widget (context); if (source_widget == widget) { /* Default to MOVE, unless the user has * pressed ctrl or alt to affect available actions */ if ((context->actions & GDK_ACTION_MOVE) != 0) suggested_action = GDK_ACTION_MOVE; } gtk_text_mark_set_visible (text_view->dnd_mark, text_view->cursor_visible); gdk_drag_status (context, suggested_action, time); } else { /* Can't drop here. */ gdk_drag_status (context, 0, time); gtk_text_mark_set_visible (text_view->dnd_mark, FALSE); } } gtk_text_buffer_move_mark (get_buffer (text_view), gtk_text_buffer_get_mark (get_buffer (text_view), "gtk_drag_target"), &newplace); { /* The effect of this is that the text scrolls if you're near the edge. We have to scroll whether or not we're inside the selection. */ gint margin; margin = MIN (SCREEN_WIDTH (widget), SCREEN_HEIGHT (widget)); margin /= 5; gtk_text_view_scroll_to_mark_adjusted (text_view, gtk_text_buffer_get_mark (get_buffer (text_view), "gtk_drag_target"), margin, 1.0); } return TRUE; } static gboolean gtk_text_view_drag_drop (GtkWidget *widget, GdkDragContext *context, gint x, gint y, guint time) { #if 0 /* called automatically. */ if (context->targets) { gtk_drag_get_data (widget, context, GPOINTER_TO_INT (context->targets->data), time); return TRUE; } else return FALSE; #endif return TRUE; } static void insert_text_data (GtkTextView *text_view, GtkTextIter *drop_point, GtkSelectionData *selection_data) { gchar *str; str = gtk_selection_data_get_text (selection_data); if (str) { gtk_text_buffer_insert_interactive (get_buffer (text_view), drop_point, str, -1, text_view->editable); g_free (str); } } static void gtk_text_view_drag_data_received (GtkWidget *widget, GdkDragContext *context, gint x, gint y, GtkSelectionData *selection_data, guint info, guint time) { GtkTextIter drop_point; GtkTextView *text_view; GtkTextMark *drag_target_mark; text_view = GTK_TEXT_VIEW (widget); drag_target_mark = gtk_text_buffer_get_mark (get_buffer (text_view), "gtk_drag_target"); if (drag_target_mark == NULL) return; gtk_text_buffer_get_iter_at_mark (get_buffer (text_view), &drop_point, drag_target_mark); if (selection_data->target == gdk_atom_intern ("GTK_TEXT_BUFFER_CONTENTS", FALSE)) { GtkTextBuffer *src_buffer = NULL; GtkTextIter start, end; gboolean copy_tags = TRUE; if (selection_data->length != sizeof (src_buffer)) return; memcpy (&src_buffer, selection_data->data, sizeof (src_buffer)); if (src_buffer == NULL) return; g_return_if_fail (GTK_IS_TEXT_BUFFER (src_buffer)); if (gtk_text_buffer_get_tag_table (src_buffer) != gtk_text_buffer_get_tag_table (get_buffer (text_view))) copy_tags = FALSE; if (gtk_text_buffer_get_selection_bounds (src_buffer, &start, &end)) { if (copy_tags) gtk_text_buffer_insert_range_interactive (get_buffer (text_view), &drop_point, &start, &end, text_view->editable); else { gchar *str; str = gtk_text_iter_get_visible_text (&start, &end); gtk_text_buffer_insert_interactive (get_buffer (text_view), &drop_point, str, -1, text_view->editable); g_free (str); } } } else insert_text_data (text_view, &drop_point, selection_data); } static GtkAdjustment* get_hadjustment (GtkTextView *text_view) { if (text_view->hadjustment == NULL) gtk_text_view_set_scroll_adjustments (text_view, NULL, /* forces creation */ text_view->vadjustment); return text_view->hadjustment; } static GtkAdjustment* get_vadjustment (GtkTextView *text_view) { if (text_view->vadjustment == NULL) gtk_text_view_set_scroll_adjustments (text_view, text_view->hadjustment, NULL); /* forces creation */ return text_view->vadjustment; } static void gtk_text_view_set_scroll_adjustments (GtkTextView *text_view, GtkAdjustment *hadj, GtkAdjustment *vadj) { gboolean need_adjust = FALSE; g_return_if_fail (text_view != NULL); g_return_if_fail (GTK_IS_TEXT_VIEW (text_view)); if (hadj) g_return_if_fail (GTK_IS_ADJUSTMENT (hadj)); else hadj = GTK_ADJUSTMENT (gtk_adjustment_new (0.0, 0.0, 0.0, 0.0, 0.0, 0.0)); if (vadj) g_return_if_fail (GTK_IS_ADJUSTMENT (vadj)); else vadj = GTK_ADJUSTMENT (gtk_adjustment_new (0.0, 0.0, 0.0, 0.0, 0.0, 0.0)); if (text_view->hadjustment && (text_view->hadjustment != hadj)) { gtk_signal_disconnect_by_data (GTK_OBJECT (text_view->hadjustment), text_view); gtk_object_unref (GTK_OBJECT (text_view->hadjustment)); } if (text_view->vadjustment && (text_view->vadjustment != vadj)) { gtk_signal_disconnect_by_data (GTK_OBJECT (text_view->vadjustment), text_view); gtk_object_unref (GTK_OBJECT (text_view->vadjustment)); } if (text_view->hadjustment != hadj) { text_view->hadjustment = hadj; gtk_object_ref (GTK_OBJECT (text_view->hadjustment)); gtk_object_sink (GTK_OBJECT (text_view->hadjustment)); gtk_signal_connect (GTK_OBJECT (text_view->hadjustment), "value_changed", (GtkSignalFunc) gtk_text_view_value_changed, text_view); need_adjust = TRUE; } if (text_view->vadjustment != vadj) { text_view->vadjustment = vadj; gtk_object_ref (GTK_OBJECT (text_view->vadjustment)); gtk_object_sink (GTK_OBJECT (text_view->vadjustment)); gtk_signal_connect (GTK_OBJECT (text_view->vadjustment), "value_changed", (GtkSignalFunc) gtk_text_view_value_changed, text_view); need_adjust = TRUE; } if (need_adjust) gtk_text_view_value_changed (NULL, text_view); } static void gtk_text_view_value_changed (GtkAdjustment *adj, GtkTextView *text_view) { GtkTextIter iter; gint line_top; gint dx = 0; gint dy = 0; if (adj == text_view->hadjustment) { dx = text_view->xoffset - (gint)adj->value; text_view->xoffset = adj->value; } else if (adj == text_view->vadjustment) { dy = text_view->yoffset - (gint)adj->value; text_view->yoffset = adj->value; if (text_view->layout) { gtk_text_layout_get_line_at_y (text_view->layout, &iter, adj->value, &line_top); gtk_text_buffer_move_mark (get_buffer (text_view), text_view->first_para_mark, &iter); text_view->first_para_pixels = adj->value - line_top; } } if (GTK_WIDGET_REALIZED (text_view) && (dx != 0 || dy != 0)) { if (dy != 0) { if (text_view->left_window) text_window_scroll (text_view->left_window, 0, dy); if (text_view->right_window) text_window_scroll (text_view->right_window, 0, dy); } if (dx != 0) { if (text_view->top_window) text_window_scroll (text_view->top_window, dx, 0); if (text_view->bottom_window) text_window_scroll (text_view->bottom_window, dx, 0); } /* It looks nicer to scroll the main area last, because * it takes a while, and making the side areas update * afterward emphasizes the slowness of scrolling the * main area. */ text_window_scroll (text_view->text_window, dx, dy); } } static void gtk_text_view_commit_handler (GtkIMContext *context, const gchar *str, GtkTextView *text_view) { gtk_text_buffer_delete_selection (get_buffer (text_view), TRUE, text_view->editable); if (!strcmp (str, "\n")) { gtk_text_buffer_insert_interactive_at_cursor (get_buffer (text_view), "\n", 1, text_view->editable); } else { if (text_view->overwrite_mode) gtk_text_view_delete_from_cursor (text_view, GTK_DELETE_CHARS, 1); gtk_text_buffer_insert_interactive_at_cursor (get_buffer (text_view), str, -1, text_view->editable); } gtk_text_view_scroll_to_mark (text_view, gtk_text_buffer_get_mark (get_buffer (text_view), "insert"), 0); } static void gtk_text_view_preedit_changed_handler (GtkIMContext *context, GtkTextView *text_view) { gchar *str; PangoAttrList *attrs; gint cursor_pos; gtk_im_context_get_preedit_string (context, &str, &attrs, &cursor_pos); gtk_text_layout_set_preedit_string (text_view->layout, str, attrs, cursor_pos); pango_attr_list_unref (attrs); g_free (str); } static void gtk_text_view_mark_set_handler (GtkTextBuffer *buffer, const GtkTextIter *location, GtkTextMark *mark, gpointer data) { GtkTextView *text_view = GTK_TEXT_VIEW (data); gboolean need_reset = FALSE; if (mark == gtk_text_buffer_get_insert (buffer)) { text_view->virtual_cursor_x = -1; text_view->virtual_cursor_y = -1; need_reset = TRUE; } else if (mark == gtk_text_buffer_get_selection_bound (buffer)) { need_reset = TRUE; } if (need_reset) gtk_text_view_reset_im_context (text_view); } static void gtk_text_view_get_virtual_cursor_pos (GtkTextView *text_view, gint *x, gint *y) { GdkRectangle strong_pos; GtkTextIter insert; gtk_text_buffer_get_iter_at_mark (get_buffer (text_view), &insert, gtk_text_buffer_get_mark (get_buffer (text_view), "insert")); if ((x && text_view->virtual_cursor_x == -1) || (y && text_view->virtual_cursor_y == -1)) gtk_text_layout_get_cursor_locations (text_view->layout, &insert, &strong_pos, NULL); if (x) { if (text_view->virtual_cursor_x != -1) *x = text_view->virtual_cursor_x; else *x = strong_pos.x; } if (y) { if (text_view->virtual_cursor_x != -1) *y = text_view->virtual_cursor_y; else *y = strong_pos.y + strong_pos.height / 2; } } static void gtk_text_view_set_virtual_cursor_pos (GtkTextView *text_view, gint x, gint y) { GdkRectangle strong_pos; GtkTextIter insert; gtk_text_buffer_get_iter_at_mark (get_buffer (text_view), &insert, gtk_text_buffer_get_mark (get_buffer (text_view), "insert")); if (x == -1 || y == -1) gtk_text_layout_get_cursor_locations (text_view->layout, &insert, &strong_pos, NULL); text_view->virtual_cursor_x = (x == -1) ? strong_pos.x : x; text_view->virtual_cursor_y = (y == -1) ? strong_pos.y + strong_pos.height / 2 : y; } /* Quick hack of a popup menu */ static void activate_cb (GtkWidget *menuitem, GtkTextView *text_view) { const gchar *signal = gtk_object_get_data (GTK_OBJECT (menuitem), "gtk-signal"); gtk_signal_emit_by_name (GTK_OBJECT (text_view), signal); } static void append_action_signal (GtkTextView *text_view, GtkWidget *menu, const gchar *label, const gchar *signal) { GtkWidget *menuitem = gtk_menu_item_new_with_label (label); gtk_object_set_data (GTK_OBJECT (menuitem), "gtk-signal", (char *)signal); gtk_signal_connect (GTK_OBJECT (menuitem), "activate", activate_cb, text_view); gtk_widget_show (menuitem); gtk_menu_shell_append (GTK_MENU_SHELL (menu), menuitem); } static void popup_menu_detach (GtkWidget *attach_widget, GtkMenu *menu) { GTK_TEXT_VIEW (attach_widget)->popup_menu = NULL; } static void gtk_text_view_popup_menu (GtkTextView *text_view, GdkEventButton *event) { if (!text_view->popup_menu) { GtkWidget *menuitem; text_view->popup_menu = gtk_menu_new (); gtk_menu_attach_to_widget (GTK_MENU (text_view->popup_menu), GTK_WIDGET (text_view), popup_menu_detach); append_action_signal (text_view, text_view->popup_menu, _("Cut"), "cut_clipboard"); append_action_signal (text_view, text_view->popup_menu, _("Copy"), "copy_clipboard"); append_action_signal (text_view, text_view->popup_menu, _("Paste"), "paste_clipboard"); menuitem = gtk_menu_item_new (); /* Separator */ gtk_widget_show (menuitem); gtk_menu_shell_append (GTK_MENU_SHELL (text_view->popup_menu), menuitem); gtk_im_multicontext_append_menuitems (GTK_IM_MULTICONTEXT (text_view->im_context), GTK_MENU_SHELL (text_view->popup_menu)); } gtk_menu_popup (GTK_MENU (text_view->popup_menu), NULL, NULL, NULL, NULL, event->button, event->time); } /* Child GdkWindows */ static GtkTextWindow* text_window_new (GtkTextWindowType type, GtkWidget *widget, gint width_request, gint height_request) { GtkTextWindow *win; win = g_new (GtkTextWindow, 1); win->type = type; win->widget = widget; win->window = NULL; win->bin_window = NULL; win->requisition.width = width_request; win->requisition.height = height_request; win->allocation.width = width_request; win->allocation.height = height_request; win->allocation.x = 0; win->allocation.y = 0; return win; } static void text_window_free (GtkTextWindow *win) { if (win->window) text_window_unrealize (win); g_free (win); } static void text_window_realize (GtkTextWindow *win, GdkWindow *parent) { GdkWindowAttr attributes; gint attributes_mask; GdkCursor *cursor; attributes.window_type = GDK_WINDOW_CHILD; attributes.x = win->allocation.x; attributes.y = win->allocation.y; attributes.width = win->allocation.width; attributes.height = win->allocation.height; attributes.wclass = GDK_INPUT_OUTPUT; attributes.visual = gtk_widget_get_visual (win->widget); attributes.colormap = gtk_widget_get_colormap (win->widget); attributes.event_mask = GDK_VISIBILITY_NOTIFY_MASK; attributes_mask = GDK_WA_X | GDK_WA_Y | GDK_WA_VISUAL | GDK_WA_COLORMAP; win->window = gdk_window_new (parent, &attributes, attributes_mask); gdk_window_show (win->window); gdk_window_set_user_data (win->window, win->widget); attributes.x = 0; attributes.y = 0; attributes.width = win->allocation.width; attributes.height = win->allocation.height; attributes.event_mask = (GDK_EXPOSURE_MASK | GDK_SCROLL_MASK | GDK_KEY_PRESS_MASK | GDK_BUTTON_PRESS_MASK | GDK_BUTTON_RELEASE_MASK | GDK_POINTER_MOTION_MASK | GDK_POINTER_MOTION_HINT_MASK | gtk_widget_get_events (win->widget)); win->bin_window = gdk_window_new (win->window, &attributes, attributes_mask); gdk_window_show (win->bin_window); gdk_window_set_user_data (win->bin_window, win->widget); if (win->type == GTK_TEXT_WINDOW_TEXT) { /* I-beam cursor */ cursor = gdk_cursor_new (GDK_XTERM); gdk_window_set_cursor (win->bin_window, cursor); gdk_cursor_destroy (cursor); gtk_im_context_set_client_window (GTK_TEXT_VIEW (win->widget)->im_context, win->window); gdk_window_set_background (win->bin_window, &win->widget->style->base[GTK_WIDGET_STATE (win->widget)]); } else { gdk_window_set_background (win->bin_window, &win->widget->style->bg[GTK_WIDGET_STATE (win->widget)]); } g_object_set_qdata (G_OBJECT (win->window), g_quark_from_static_string ("gtk-text-view-text-window"), win); g_object_set_qdata (G_OBJECT (win->bin_window), g_quark_from_static_string ("gtk-text-view-text-window"), win); } static void text_window_unrealize (GtkTextWindow *win) { if (win->type == GTK_TEXT_WINDOW_TEXT) { gtk_im_context_set_client_window (GTK_TEXT_VIEW (win->widget)->im_context, NULL); } gdk_window_set_user_data (win->window, NULL); gdk_window_set_user_data (win->bin_window, NULL); gdk_window_destroy (win->bin_window); gdk_window_destroy (win->window); win->window = NULL; win->bin_window = NULL; } static void text_window_size_allocate (GtkTextWindow *win, GdkRectangle *rect) { win->allocation = *rect; if (win->window) { gdk_window_move_resize (win->window, rect->x, rect->y, rect->width, rect->height); gdk_window_resize (win->bin_window, rect->width, rect->height); } } static void text_window_scroll (GtkTextWindow *win, gint dx, gint dy) { if (dx != 0 || dy != 0) { gdk_window_scroll (win->bin_window, dx, dy); gdk_window_process_updates (win->bin_window, TRUE); } } static void text_window_invalidate_rect (GtkTextWindow *win, GdkRectangle *rect) { GdkRectangle window_rect; gtk_text_view_buffer_to_window_coords (GTK_TEXT_VIEW (win->widget), win->type, rect->x, rect->y, &window_rect.x, &window_rect.y); window_rect.width = rect->width; window_rect.height = rect->height; /* Adjust the rect as appropriate */ switch (win->type) { case GTK_TEXT_WINDOW_TEXT: break; case GTK_TEXT_WINDOW_LEFT: case GTK_TEXT_WINDOW_RIGHT: window_rect.x = 0; window_rect.width = win->allocation.width; break; case GTK_TEXT_WINDOW_TOP: case GTK_TEXT_WINDOW_BOTTOM: window_rect.y = 0; window_rect.height = win->allocation.height; break; default: g_warning ("%s: bug!", G_STRLOC); return; break; } gdk_window_invalidate_rect (win->bin_window, &window_rect, FALSE); } static gint text_window_get_width (GtkTextWindow *win) { return win->allocation.width; } static gint text_window_get_height (GtkTextWindow *win) { return win->allocation.height; } static void text_window_get_allocation (GtkTextWindow *win, GdkRectangle *rect) { *rect = win->allocation; } /* Windows */ /** * gtk_text_view_get_window: * @text_view: a #GtkTextView * @win: window to get * * Retrieves the #GdkWindow corresponding to an area of the text view; * possible windows include the overall widget window, child windows * on the left, right, top, bottom, and the window that displays the * text buffer. Windows are %NULL and nonexistent if their width or * height is 0, and are nonexistent before the widget has been * realized. * * Return value: a #GdkWindow, or %NULL **/ GdkWindow* gtk_text_view_get_window (GtkTextView *text_view, GtkTextWindowType win) { g_return_val_if_fail (GTK_IS_TEXT_VIEW (text_view), NULL); switch (win) { case GTK_TEXT_WINDOW_WIDGET: return GTK_WIDGET (text_view)->window; break; case GTK_TEXT_WINDOW_TEXT: return text_view->text_window->bin_window; break; case GTK_TEXT_WINDOW_LEFT: if (text_view->left_window) return text_view->left_window->bin_window; else return NULL; break; case GTK_TEXT_WINDOW_RIGHT: if (text_view->right_window) return text_view->right_window->bin_window; else return NULL; break; case GTK_TEXT_WINDOW_TOP: if (text_view->top_window) return text_view->top_window->bin_window; else return NULL; break; case GTK_TEXT_WINDOW_BOTTOM: if (text_view->bottom_window) return text_view->bottom_window->bin_window; else return NULL; break; default: g_warning ("%s: Unknown GtkTextWindowType", G_STRLOC); return NULL; break; } } /** * gtk_text_view_get_window_type: * @text_view: a #GtkTextView * @window: a window type * * Usually used to find out which window an event corresponds to. * If you connect to an event signal on @text_view, this function * should be called on event->window to * see which window it was. * * Return value: the window type. **/ GtkTextWindowType gtk_text_view_get_window_type (GtkTextView *text_view, GdkWindow *window) { GtkTextWindow *win; g_return_val_if_fail (GTK_IS_TEXT_VIEW (text_view), 0); g_return_val_if_fail (GDK_IS_WINDOW (text_view), 0); if (window == GTK_WIDGET (text_view)->window) return GTK_TEXT_WINDOW_WIDGET; win = g_object_get_qdata (G_OBJECT (window), g_quark_try_string ("gtk-text-view-text-window")); if (win) return win->type; else { return GTK_TEXT_WINDOW_PRIVATE; } } static void buffer_to_widget (GtkTextView *text_view, gint buffer_x, gint buffer_y, gint *window_x, gint *window_y) { if (window_x) { *window_x = buffer_x - text_view->xoffset + FOCUS_EDGE_WIDTH; if (text_view->left_window) *window_x += text_view->left_window->allocation.width; } if (window_y) { *window_y = buffer_y - text_view->yoffset + FOCUS_EDGE_WIDTH; if (text_view->top_window) *window_y += text_view->top_window->allocation.height; } } static void widget_to_text_window (GtkTextWindow *win, gint widget_x, gint widget_y, gint *window_x, gint *window_y) { if (window_x) *window_x = widget_x - win->allocation.x; if (window_y) *window_y = widget_y - win->allocation.y; } static void buffer_to_text_window (GtkTextView *text_view, GtkTextWindow *win, gint buffer_x, gint buffer_y, gint *window_x, gint *window_y) { if (win == NULL) { g_warning ("Attempt to convert text buffer coordinates to coordinates " "for a nonexistent or private child window of GtkTextView"); return; } buffer_to_widget (text_view, buffer_x, buffer_y, window_x, window_y); widget_to_text_window (win, window_x ? *window_x : 0, window_y ? *window_y : 0, window_x, window_y); } /** * gtk_text_view_buffer_to_window_coords: * @text_view: a #GtkTextView * @win: a #GtkTextWindowType * @buffer_x: buffer x coordinate * @buffer_y: buffer y coordinate * @window_x: window x coordinate return location * @window_y: window y coordinate return location * * Converts coordinate (@buffer_x, @buffer_y) to coordinates for the window * @win, and stores the result in (@window_x, @window_y). **/ void gtk_text_view_buffer_to_window_coords (GtkTextView *text_view, GtkTextWindowType win, gint buffer_x, gint buffer_y, gint *window_x, gint *window_y) { g_return_if_fail (GTK_IS_TEXT_VIEW (text_view)); switch (win) { case GTK_TEXT_WINDOW_WIDGET: buffer_to_widget (text_view, buffer_x, buffer_y, window_x, window_y); break; case GTK_TEXT_WINDOW_TEXT: if (window_x) *window_x = buffer_x - text_view->xoffset; if (window_y) *window_y = buffer_y - text_view->yoffset; break; case GTK_TEXT_WINDOW_LEFT: buffer_to_text_window (text_view, text_view->left_window, buffer_x, buffer_y, window_x, window_y); break; case GTK_TEXT_WINDOW_RIGHT: buffer_to_text_window (text_view, text_view->right_window, buffer_x, buffer_y, window_x, window_y); break; case GTK_TEXT_WINDOW_TOP: buffer_to_text_window (text_view, text_view->top_window, buffer_x, buffer_y, window_x, window_y); break; case GTK_TEXT_WINDOW_BOTTOM: buffer_to_text_window (text_view, text_view->bottom_window, buffer_x, buffer_y, window_x, window_y); break; case GTK_TEXT_WINDOW_PRIVATE: g_warning ("%s: can't get coords for private windows", G_STRLOC); break; default: g_warning ("%s: Unknown GtkTextWindowType", G_STRLOC); break; } } static void widget_to_buffer (GtkTextView *text_view, gint widget_x, gint widget_y, gint *buffer_x, gint *buffer_y) { if (buffer_x) { *buffer_x = widget_x - FOCUS_EDGE_WIDTH + text_view->xoffset; if (text_view->left_window) *buffer_x -= text_view->left_window->allocation.width; } if (buffer_y) { *buffer_y = widget_y - FOCUS_EDGE_WIDTH + text_view->yoffset; if (text_view->top_window) *buffer_y -= text_view->top_window->allocation.height; } } static void text_window_to_widget (GtkTextWindow *win, gint window_x, gint window_y, gint *widget_x, gint *widget_y) { if (widget_x) *widget_x = window_x + win->allocation.x; if (widget_y) *widget_y = window_y + win->allocation.y; } static void text_window_to_buffer (GtkTextView *text_view, GtkTextWindow *win, gint window_x, gint window_y, gint *buffer_x, gint *buffer_y) { if (win == NULL) { g_warning ("Attempt to convert GtkTextView buffer coordinates into " "coordinates for a nonexistent child window."); return; } text_window_to_widget (win, window_x, window_y, buffer_x, buffer_y); widget_to_buffer (text_view, buffer_x ? *buffer_x : 0, buffer_y ? *buffer_y : 0, buffer_x, buffer_y); } /** * gtk_text_view_window_to_buffer_coords: * @text_view: a #GtkTextView * @win: a #GtkTextWindowType * @window_x: window x coordinate * @window_y: window y coordinate * @buffer_x: buffer x coordinate return location * @buffer_y: buffer y coordinate return location * * Converts coordinates on the window identified by @win to buffer * coordinates, storing the result in (@buffer_x,@buffer_y). **/ void gtk_text_view_window_to_buffer_coords (GtkTextView *text_view, GtkTextWindowType win, gint window_x, gint window_y, gint *buffer_x, gint *buffer_y) { g_return_if_fail (GTK_IS_TEXT_VIEW (text_view)); switch (win) { case GTK_TEXT_WINDOW_WIDGET: widget_to_buffer (text_view, window_x, window_y, buffer_x, buffer_y); break; case GTK_TEXT_WINDOW_TEXT: if (buffer_x) *buffer_x = window_x + text_view->xoffset; if (buffer_y) *buffer_y = window_y + text_view->yoffset; break; case GTK_TEXT_WINDOW_LEFT: text_window_to_buffer (text_view, text_view->left_window, window_x, window_y, buffer_x, buffer_y); break; case GTK_TEXT_WINDOW_RIGHT: text_window_to_buffer (text_view, text_view->right_window, window_x, window_y, buffer_x, buffer_y); break; case GTK_TEXT_WINDOW_TOP: text_window_to_buffer (text_view, text_view->top_window, window_x, window_y, buffer_x, buffer_y); break; case GTK_TEXT_WINDOW_BOTTOM: text_window_to_buffer (text_view, text_view->bottom_window, window_x, window_y, buffer_x, buffer_y); break; case GTK_TEXT_WINDOW_PRIVATE: g_warning ("%s: can't get coords for private windows", G_STRLOC); break; default: g_warning ("%s: Unknown GtkTextWindowType", G_STRLOC); break; } } static void set_window_width (GtkTextView *text_view, gint width, GtkTextWindowType type, GtkTextWindow **winp) { if (width == 0) { if (*winp) { text_window_free (*winp); *winp = NULL; gtk_widget_queue_resize (GTK_WIDGET (text_view)); } } else { if (*winp == NULL) { *winp = text_window_new (type, GTK_WIDGET (text_view), width, 0); } else { if ((*winp)->requisition.width == width) return; } gtk_widget_queue_resize (GTK_WIDGET (text_view)); } } static void set_window_height (GtkTextView *text_view, gint height, GtkTextWindowType type, GtkTextWindow **winp) { if (height == 0) { if (*winp) { text_window_free (*winp); *winp = NULL; gtk_widget_queue_resize (GTK_WIDGET (text_view)); } } else { if (*winp == NULL) { *winp = text_window_new (type, GTK_WIDGET (text_view), 0, height); } else { if ((*winp)->requisition.height == height) return; } gtk_widget_queue_resize (GTK_WIDGET (text_view)); } } /** * gtk_text_view_set_border_window_size: * @text_view: a #GtkTextView * @type: window to affect * @size: width or height of the window * * Sets the width of %GTK_TEXT_WINDOW_LEFT or %GTK_TEXT_WINDOW_RIGHT, * or the height of %GTK_TEXT_WINDOW_TOP or %GTK_TEXT_WINDOW_BOTTOM. * Automatically destroys the corresponding window if the size is set to 0, * and creates the window if the size is set to non-zero. **/ void gtk_text_view_set_border_window_size (GtkTextView *text_view, GtkTextWindowType type, gint size) { g_return_if_fail (GTK_IS_TEXT_VIEW (text_view)); g_return_if_fail (size >= 0); g_return_if_fail (type != GTK_TEXT_WINDOW_WIDGET); g_return_if_fail (type != GTK_TEXT_WINDOW_TEXT); switch (type) { case GTK_TEXT_WINDOW_LEFT: set_window_width (text_view, size, GTK_TEXT_WINDOW_LEFT, &text_view->left_window); break; case GTK_TEXT_WINDOW_RIGHT: set_window_width (text_view, size, GTK_TEXT_WINDOW_RIGHT, &text_view->right_window); break; case GTK_TEXT_WINDOW_TOP: set_window_height (text_view, size, GTK_TEXT_WINDOW_TOP, &text_view->top_window); break; case GTK_TEXT_WINDOW_BOTTOM: set_window_height (text_view, size, GTK_TEXT_WINDOW_BOTTOM, &text_view->bottom_window); break; default: g_warning ("Can't set size of center or widget or private GtkTextWindowType in %s", G_STRLOC); break; } } /** * gtk_text_view_set_text_window_size: * @text_view: a #GtkTextView * @width: a width in pixels * @height: a height in pixels * * Sets the size request for the main text window (%GTK_TEXT_WINDOW_TEXT). * If the widget gets more space than it requested, the main text window * will be larger than this. * **/ void gtk_text_view_set_text_window_size (GtkTextView *text_view, gint width, gint height) { GtkTextWindow *win; g_return_if_fail (GTK_IS_TEXT_VIEW (text_view)); g_return_if_fail (width > 0); g_return_if_fail (height > 0); win = text_view->text_window; if (win->requisition.width == width && win->requisition.height == height) return; win->requisition.width = width; win->requisition.height = height; gtk_widget_queue_resize (GTK_WIDGET (text_view)); } /* * Child widgets */ static GtkTextViewChild* text_view_child_new_anchored (GtkWidget *child, GtkTextChildAnchor *anchor, GtkTextLayout *layout) { GtkTextViewChild *vc; vc = g_new (GtkTextViewChild, 1); vc->widget = child; vc->anchor = anchor; vc->from_top_of_line = 0; vc->from_left_of_buffer = 0; g_object_ref (G_OBJECT (vc->widget)); g_object_ref (G_OBJECT (vc->anchor)); gtk_object_set_data (GTK_OBJECT (child), "gtk-text-view-child", vc); gtk_text_child_anchor_register_child (anchor, child, layout); return vc; } static GtkTextViewChild* text_view_child_new_window (GtkWidget *child, GtkTextWindowType type, gint x, gint y) { GtkTextViewChild *vc; vc = g_new (GtkTextViewChild, 1); vc->widget = child; vc->anchor = NULL; vc->from_top_of_line = 0; vc->from_left_of_buffer = 0; g_object_ref (G_OBJECT (vc->widget)); vc->type = type; vc->x = x; vc->y = y; return vc; } static void text_view_child_free (GtkTextViewChild *child) { gtk_object_remove_data (GTK_OBJECT (child->widget), "gtk-text-view-child"); if (child->anchor) { gtk_text_child_anchor_unregister_child (child->anchor, child->widget); g_object_unref (G_OBJECT (child->anchor)); } g_object_unref (G_OBJECT (child->widget)); g_free (child); } static void text_view_child_realize (GtkTextView *text_view, GtkTextViewChild *vc) { if (vc->anchor) gtk_widget_set_parent_window (vc->widget, text_view->text_window->bin_window); else { GdkWindow *window; window = gtk_text_view_get_window (text_view, vc->type); gtk_widget_set_parent_window (vc->widget, window); } gtk_widget_realize (vc->widget); } static void add_child (GtkTextView *text_view, GtkTextViewChild *vc) { text_view->children = g_slist_prepend (text_view->children, vc); gtk_widget_set_parent (vc->widget, GTK_WIDGET (text_view)); if (GTK_WIDGET_REALIZED (text_view)) text_view_child_realize (text_view, vc); if (GTK_WIDGET_VISIBLE (text_view) && GTK_WIDGET_VISIBLE (vc->widget)) { if (GTK_WIDGET_MAPPED (text_view)) gtk_widget_map (vc->widget); gtk_widget_queue_resize (vc->widget); } } void gtk_text_view_add_child_at_anchor (GtkTextView *text_view, GtkWidget *child, GtkTextChildAnchor *anchor) { GtkTextViewChild *vc; g_return_if_fail (GTK_IS_TEXT_VIEW (text_view)); g_return_if_fail (GTK_IS_WIDGET (child)); g_return_if_fail (GTK_IS_TEXT_CHILD_ANCHOR (anchor)); g_return_if_fail (child->parent == NULL); gtk_text_view_ensure_layout (text_view); vc = text_view_child_new_anchored (child, anchor, text_view->layout); add_child (text_view, vc); } void gtk_text_view_add_child_in_window (GtkTextView *text_view, GtkWidget *child, GtkTextWindowType which_window, gint xpos, gint ypos) { GtkTextViewChild *vc; g_return_if_fail (GTK_IS_TEXT_VIEW (text_view)); g_return_if_fail (GTK_IS_WIDGET (child)); g_return_if_fail (xpos >= 0); g_return_if_fail (ypos >= 0); g_return_if_fail (child->parent == NULL); vc = text_view_child_new_window (child, which_window, xpos, ypos); add_child (text_view, vc); } void gtk_text_view_move_child (GtkTextView *text_view, GtkWidget *child, gint xpos, gint ypos) { GtkTextViewChild *vc; g_return_if_fail (GTK_IS_TEXT_VIEW (text_view)); g_return_if_fail (GTK_IS_WIDGET (child)); g_return_if_fail (xpos >= 0); g_return_if_fail (ypos >= 0); g_return_if_fail (child->parent == (GtkWidget*) text_view); vc = gtk_object_get_data (GTK_OBJECT (child), "gtk-text-view-child"); g_assert (vc != NULL); vc->x = xpos; vc->y = ypos; if (GTK_WIDGET_VISIBLE (child) && GTK_WIDGET_VISIBLE (text_view)) gtk_widget_queue_resize (child); } /* Iterator operations */ gboolean gtk_text_view_forward_display_line (GtkTextView *text_view, GtkTextIter *iter) { g_return_val_if_fail (GTK_IS_TEXT_VIEW (text_view), FALSE); g_return_val_if_fail (iter != NULL, FALSE); gtk_text_view_ensure_layout (text_view); return gtk_text_layout_move_iter_to_next_line (text_view->layout, iter); } gboolean gtk_text_view_backward_display_line (GtkTextView *text_view, GtkTextIter *iter) { g_return_val_if_fail (GTK_IS_TEXT_VIEW (text_view), FALSE); g_return_val_if_fail (iter != NULL, FALSE); gtk_text_view_ensure_layout (text_view); return gtk_text_layout_move_iter_to_previous_line (text_view->layout, iter); } gboolean gtk_text_view_forward_display_line_end (GtkTextView *text_view, GtkTextIter *iter) { g_return_val_if_fail (GTK_IS_TEXT_VIEW (text_view), FALSE); g_return_val_if_fail (iter != NULL, FALSE); gtk_text_view_ensure_layout (text_view); return gtk_text_layout_move_iter_to_line_end (text_view->layout, iter, 1); } gboolean gtk_text_view_backward_display_line_start (GtkTextView *text_view, GtkTextIter *iter) { g_return_val_if_fail (GTK_IS_TEXT_VIEW (text_view), FALSE); g_return_val_if_fail (iter != NULL, FALSE); gtk_text_view_ensure_layout (text_view); return gtk_text_layout_move_iter_to_line_end (text_view->layout, iter, -1); } gboolean gtk_text_view_starts_display_line (GtkTextView *text_view, const GtkTextIter *iter) { g_return_val_if_fail (GTK_IS_TEXT_VIEW (text_view), FALSE); g_return_val_if_fail (iter != NULL, FALSE); gtk_text_view_ensure_layout (text_view); return gtk_text_layout_iter_starts_line (text_view->layout, iter); } gboolean gtk_text_view_move_visually (GtkTextView *text_view, GtkTextIter *iter, gint count) { g_return_val_if_fail (GTK_IS_TEXT_VIEW (text_view), FALSE); g_return_val_if_fail (iter != NULL, FALSE); gtk_text_view_ensure_layout (text_view); return gtk_text_layout_move_iter_visually (text_view->layout, iter, count); }