/* GTK - The GIMP Toolkit * Copyright (C) 1995-1997 Peter Mattis, Spencer Kimball and Josh MacDonald * Copyright (C) 1998 Elliot Lee * * 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 "gtkhandlebox.h" #include "gtkmain.h" #include "gtkmarshalers.h" #include "gtksignal.h" #include "gtkwindow.h" #include "gtkintl.h" enum { PROP_0, PROP_SHADOW, PROP_SHADOW_TYPE, PROP_HANDLE_POSITION, PROP_SNAP_EDGE }; #define DRAG_HANDLE_SIZE 10 #define CHILDLESS_SIZE 25 #define GHOST_HEIGHT 3 #define TOLERANCE 5 enum { SIGNAL_CHILD_ATTACHED, SIGNAL_CHILD_DETACHED, SIGNAL_LAST }; /* The algorithm for docking and redocking implemented here * has a couple of nice properties: * * 1) During a single drag, docking always occurs at the * the same cursor position. This means that the users * motions are reversible, and that you won't * undock/dock oscillations. * * 2) Docking generally occurs at user-visible features. * The user, once they figure out to redock, will * have useful information about doing it again in * the future. * * Please try to preserve these properties if you * change the algorithm. (And the current algorithm * is far from ideal). Briefly, the current algorithm * for deciding whether the handlebox is docked or not: * * 1) The decision is done by comparing two rectangles - the * allocation if the widget at the start of the drag, * and the boundary of hb->bin_window at the start of * of the drag offset by the distance that the cursor * has moved. * * 2) These rectangles must have one edge, the "snap_edge" * of the handlebox, aligned within TOLERANCE. * * 3) On the other dimension, the extents of one rectangle * must be contained in the extents of the other, * extended by tolerance. That is, either we can have: * * <-TOLERANCE-|--------bin_window--------------|-TOLERANCE-> * <--------float_window--------------------> * * or we can have: * * <-TOLERANCE-|------float_window--------------|-TOLERANCE-> * <--------bin_window--------------------> */ static void gtk_handle_box_class_init (GtkHandleBoxClass *klass); static void gtk_handle_box_init (GtkHandleBox *handle_box); static void gtk_handle_box_set_property (GObject *object, guint param_id, const GValue *value, GParamSpec *pspec); static void gtk_handle_box_get_property (GObject *object, guint param_id, GValue *value, GParamSpec *pspec); static void gtk_handle_box_destroy (GtkObject *object); static void gtk_handle_box_map (GtkWidget *widget); static void gtk_handle_box_unmap (GtkWidget *widget); static void gtk_handle_box_realize (GtkWidget *widget); static void gtk_handle_box_unrealize (GtkWidget *widget); static void gtk_handle_box_style_set (GtkWidget *widget, GtkStyle *previous_style); static void gtk_handle_box_size_request (GtkWidget *widget, GtkRequisition *requisition); static void gtk_handle_box_size_allocate (GtkWidget *widget, GtkAllocation *real_allocation); static void gtk_handle_box_add (GtkContainer *container, GtkWidget *widget); static void gtk_handle_box_remove (GtkContainer *container, GtkWidget *widget); static void gtk_handle_box_draw_ghost (GtkHandleBox *hb); static void gtk_handle_box_paint (GtkWidget *widget, GdkEventExpose *event, GdkRectangle *area); static gint gtk_handle_box_expose (GtkWidget *widget, GdkEventExpose *event); static gint gtk_handle_box_button_changed (GtkWidget *widget, GdkEventButton *event); static gint gtk_handle_box_motion (GtkWidget *widget, GdkEventMotion *event); static gint gtk_handle_box_delete_event (GtkWidget *widget, GdkEventAny *event); static void gtk_handle_box_reattach (GtkHandleBox *hb); static GtkBinClass *parent_class; static guint handle_box_signals[SIGNAL_LAST] = { 0 }; GtkType gtk_handle_box_get_type (void) { static GtkType handle_box_type = 0; if (!handle_box_type) { static const GtkTypeInfo handle_box_info = { "GtkHandleBox", sizeof (GtkHandleBox), sizeof (GtkHandleBoxClass), (GtkClassInitFunc) gtk_handle_box_class_init, (GtkObjectInitFunc) gtk_handle_box_init, /* reserved_1 */ NULL, /* reserved_2 */ NULL, (GtkClassInitFunc) NULL, }; handle_box_type = gtk_type_unique (GTK_TYPE_BIN, &handle_box_info); } return handle_box_type; } static void gtk_handle_box_class_init (GtkHandleBoxClass *class) { GObjectClass *gobject_class; GtkObjectClass *object_class; GtkWidgetClass *widget_class; GtkContainerClass *container_class; gobject_class = (GObjectClass *) class; object_class = (GtkObjectClass *) class; widget_class = (GtkWidgetClass *) class; container_class = (GtkContainerClass *) class; parent_class = gtk_type_class (GTK_TYPE_BIN); gobject_class->set_property = gtk_handle_box_set_property; gobject_class->get_property = gtk_handle_box_get_property; g_object_class_install_property (gobject_class, PROP_SHADOW, g_param_spec_enum ("shadow", NULL, _("Deprecated property, use shadow_type instead."), GTK_TYPE_SHADOW_TYPE, GTK_SHADOW_ETCHED_OUT, G_PARAM_READABLE | G_PARAM_WRITABLE)); g_object_class_install_property (gobject_class, PROP_SHADOW_TYPE, g_param_spec_enum ("shadow_type", _("Shadow type"), _("Appearance of the shadow that surrounds the container."), GTK_TYPE_SHADOW_TYPE, GTK_SHADOW_ETCHED_OUT, G_PARAM_READABLE | G_PARAM_WRITABLE)); g_object_class_install_property (gobject_class, PROP_HANDLE_POSITION, g_param_spec_enum ("handle_position", _("Handle position"), _("Position of the handle relative to the child widget."), GTK_TYPE_POSITION_TYPE, GTK_POS_LEFT, G_PARAM_READABLE | G_PARAM_WRITABLE)); g_object_class_install_property (gobject_class, PROP_SNAP_EDGE, g_param_spec_enum ("snap_edge", _("Snap edge"), _("Side of the handlebox that's lined up with the docking point to dock the handlebox."), GTK_TYPE_POSITION_TYPE, GTK_POS_TOP, G_PARAM_READABLE | G_PARAM_WRITABLE)); object_class->destroy = gtk_handle_box_destroy; widget_class->map = gtk_handle_box_map; widget_class->unmap = gtk_handle_box_unmap; widget_class->realize = gtk_handle_box_realize; widget_class->unrealize = gtk_handle_box_unrealize; widget_class->style_set = gtk_handle_box_style_set; widget_class->size_request = gtk_handle_box_size_request; widget_class->size_allocate = gtk_handle_box_size_allocate; widget_class->expose_event = gtk_handle_box_expose; widget_class->button_press_event = gtk_handle_box_button_changed; widget_class->button_release_event = gtk_handle_box_button_changed; widget_class->motion_notify_event = gtk_handle_box_motion; widget_class->delete_event = gtk_handle_box_delete_event; container_class->add = gtk_handle_box_add; container_class->remove = gtk_handle_box_remove; class->child_attached = NULL; class->child_detached = NULL; handle_box_signals[SIGNAL_CHILD_ATTACHED] = gtk_signal_new ("child_attached", GTK_RUN_FIRST, GTK_CLASS_TYPE (object_class), GTK_SIGNAL_OFFSET (GtkHandleBoxClass, child_attached), _gtk_marshal_VOID__OBJECT, GTK_TYPE_NONE, 1, GTK_TYPE_WIDGET); handle_box_signals[SIGNAL_CHILD_DETACHED] = gtk_signal_new ("child_detached", GTK_RUN_FIRST, GTK_CLASS_TYPE (object_class), GTK_SIGNAL_OFFSET (GtkHandleBoxClass, child_detached), _gtk_marshal_VOID__OBJECT, GTK_TYPE_NONE, 1, GTK_TYPE_WIDGET); } static void gtk_handle_box_init (GtkHandleBox *handle_box) { GTK_WIDGET_UNSET_FLAGS (handle_box, GTK_NO_WINDOW); handle_box->bin_window = NULL; handle_box->float_window = NULL; handle_box->shadow_type = GTK_SHADOW_OUT; handle_box->handle_position = GTK_POS_LEFT; handle_box->float_window_mapped = FALSE; handle_box->child_detached = FALSE; handle_box->in_drag = FALSE; handle_box->shrink_on_detach = TRUE; handle_box->snap_edge = -1; } static void gtk_handle_box_set_property (GObject *object, guint prop_id, const GValue *value, GParamSpec *pspec) { GtkHandleBox *handle_box = GTK_HANDLE_BOX (object); switch (prop_id) { case PROP_SHADOW: case PROP_SHADOW_TYPE: gtk_handle_box_set_shadow_type (handle_box, g_value_get_enum (value)); break; case PROP_HANDLE_POSITION: gtk_handle_box_set_handle_position (handle_box, g_value_get_enum (value)); break; case PROP_SNAP_EDGE: gtk_handle_box_set_snap_edge (handle_box, g_value_get_enum (value)); break; default: G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec); break; } } static void gtk_handle_box_get_property (GObject *object, guint prop_id, GValue *value, GParamSpec *pspec) { GtkHandleBox *handle_box = GTK_HANDLE_BOX (object); switch (prop_id) { case PROP_SHADOW: case PROP_SHADOW_TYPE: g_value_set_enum (value, handle_box->shadow_type); break; case PROP_HANDLE_POSITION: g_value_set_enum (value, handle_box->handle_position); break; case PROP_SNAP_EDGE: g_value_set_enum (value, handle_box->snap_edge); break; default: G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec); break; } } GtkWidget* gtk_handle_box_new (void) { return GTK_WIDGET (gtk_type_new (gtk_handle_box_get_type ())); } static void gtk_handle_box_destroy (GtkObject *object) { if (GTK_OBJECT_CLASS (parent_class)->destroy) (* GTK_OBJECT_CLASS (parent_class)->destroy) (object); } static void gtk_handle_box_map (GtkWidget *widget) { GtkBin *bin; GtkHandleBox *hb; GTK_WIDGET_SET_FLAGS (widget, GTK_MAPPED); bin = GTK_BIN (widget); hb = GTK_HANDLE_BOX (widget); if (bin->child && GTK_WIDGET_VISIBLE (bin->child) && !GTK_WIDGET_MAPPED (bin->child)) gtk_widget_map (bin->child); if (hb->child_detached && !hb->float_window_mapped) { gdk_window_show (hb->float_window); hb->float_window_mapped = TRUE; } gdk_window_show (hb->bin_window); gdk_window_show (widget->window); } static void gtk_handle_box_unmap (GtkWidget *widget) { GtkHandleBox *hb; GTK_WIDGET_UNSET_FLAGS (widget, GTK_MAPPED); hb = GTK_HANDLE_BOX (widget); gdk_window_hide (widget->window); if (hb->float_window_mapped) { gdk_window_hide (hb->float_window); hb->float_window_mapped = FALSE; } } static void gtk_handle_box_realize (GtkWidget *widget) { GdkWindowAttr attributes; gint attributes_mask; GtkHandleBox *hb; hb = GTK_HANDLE_BOX (widget); GTK_WIDGET_SET_FLAGS (widget, GTK_REALIZED); attributes.x = widget->allocation.x; attributes.y = widget->allocation.y; attributes.width = widget->allocation.width; attributes.height = widget->allocation.height; attributes.window_type = GDK_WINDOW_CHILD; attributes.wclass = GDK_INPUT_OUTPUT; attributes.visual = gtk_widget_get_visual (widget); attributes.colormap = gtk_widget_get_colormap (widget); attributes.event_mask = (gtk_widget_get_events (widget) | 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); attributes.x = 0; attributes.y = 0; attributes.width = widget->allocation.width; attributes.height = widget->allocation.height; attributes.window_type = GDK_WINDOW_CHILD; attributes.event_mask = (gtk_widget_get_events (widget) | GDK_EXPOSURE_MASK | GDK_BUTTON1_MOTION_MASK | GDK_POINTER_MOTION_HINT_MASK | GDK_BUTTON_PRESS_MASK | GDK_BUTTON_RELEASE_MASK); attributes_mask = GDK_WA_X | GDK_WA_Y | GDK_WA_VISUAL | GDK_WA_COLORMAP; hb->bin_window = gdk_window_new (widget->window, &attributes, attributes_mask); gdk_window_set_user_data (hb->bin_window, widget); if (GTK_BIN (hb)->child) gtk_widget_set_parent_window (GTK_BIN (hb)->child, hb->bin_window); attributes.x = 0; attributes.y = 0; attributes.width = widget->requisition.width; attributes.height = widget->requisition.height; attributes.window_type = GDK_WINDOW_TOPLEVEL; attributes.wclass = GDK_INPUT_OUTPUT; attributes.visual = gtk_widget_get_visual (widget); attributes.colormap = gtk_widget_get_colormap (widget); attributes.event_mask = (gtk_widget_get_events (widget) | GDK_KEY_PRESS_MASK | GDK_ENTER_NOTIFY_MASK | GDK_LEAVE_NOTIFY_MASK | GDK_FOCUS_CHANGE_MASK | GDK_STRUCTURE_MASK); attributes_mask = GDK_WA_X | GDK_WA_Y | GDK_WA_VISUAL | GDK_WA_COLORMAP; hb->float_window = gdk_window_new (gtk_widget_get_root_window (widget), &attributes, attributes_mask); gdk_window_set_user_data (hb->float_window, widget); gdk_window_set_decorations (hb->float_window, 0); gdk_window_set_type_hint (hb->float_window, GDK_WINDOW_TYPE_HINT_TOOLBAR); widget->style = gtk_style_attach (widget->style, widget->window); gtk_style_set_background (widget->style, widget->window, GTK_WIDGET_STATE (hb)); gtk_style_set_background (widget->style, hb->bin_window, GTK_WIDGET_STATE (hb)); gtk_style_set_background (widget->style, hb->float_window, GTK_WIDGET_STATE (hb)); gdk_window_set_back_pixmap (widget->window, NULL, TRUE); } static void gtk_handle_box_unrealize (GtkWidget *widget) { GtkHandleBox *hb = GTK_HANDLE_BOX (widget); gdk_window_set_user_data (hb->bin_window, NULL); gdk_window_destroy (hb->bin_window); hb->bin_window = NULL; gdk_window_set_user_data (hb->float_window, NULL); gdk_window_destroy (hb->float_window); hb->float_window = NULL; if (GTK_WIDGET_CLASS (parent_class)->unrealize) (* GTK_WIDGET_CLASS (parent_class)->unrealize) (widget); } static void gtk_handle_box_style_set (GtkWidget *widget, GtkStyle *previous_style) { GtkHandleBox *hb = GTK_HANDLE_BOX (widget); if (GTK_WIDGET_REALIZED (widget) && !GTK_WIDGET_NO_WINDOW (widget)) { gtk_style_set_background (widget->style, widget->window, widget->state); gtk_style_set_background (widget->style, hb->bin_window, widget->state); gtk_style_set_background (widget->style, hb->float_window, widget->state); } } static void gtk_handle_box_size_request (GtkWidget *widget, GtkRequisition *requisition) { GtkBin *bin; GtkHandleBox *hb; GtkRequisition child_requisition; bin = GTK_BIN (widget); hb = GTK_HANDLE_BOX (widget); if (hb->handle_position == GTK_POS_LEFT || hb->handle_position == GTK_POS_RIGHT) { requisition->width = DRAG_HANDLE_SIZE; requisition->height = 0; } else { requisition->width = 0; requisition->height = DRAG_HANDLE_SIZE; } /* if our child is not visible, we still request its size, since we * won't have any usefull hint for our size otherwise. */ if (bin->child) gtk_widget_size_request (bin->child, &child_requisition); else { child_requisition.width = 0; child_requisition.height = 0; } if (hb->child_detached) { /* FIXME: This doesn't work currently */ if (!hb->shrink_on_detach) { if (hb->handle_position == GTK_POS_LEFT || hb->handle_position == GTK_POS_RIGHT) requisition->height += child_requisition.height; else requisition->width += child_requisition.width; } else { if (hb->handle_position == GTK_POS_LEFT || hb->handle_position == GTK_POS_RIGHT) requisition->height += widget->style->ythickness; else requisition->width += widget->style->xthickness; } } else { requisition->width += GTK_CONTAINER (widget)->border_width * 2; requisition->height += GTK_CONTAINER (widget)->border_width * 2; if (bin->child) { requisition->width += child_requisition.width; requisition->height += child_requisition.height; } else { requisition->width += CHILDLESS_SIZE; requisition->height += CHILDLESS_SIZE; } } } static void gtk_handle_box_size_allocate (GtkWidget *widget, GtkAllocation *allocation) { GtkBin *bin; GtkHandleBox *hb; GtkRequisition child_requisition; bin = GTK_BIN (widget); hb = GTK_HANDLE_BOX (widget); if (bin->child) gtk_widget_get_child_requisition (bin->child, &child_requisition); else { child_requisition.width = 0; child_requisition.height = 0; } widget->allocation = *allocation; if (GTK_WIDGET_REALIZED (hb)) gdk_window_move_resize (widget->window, widget->allocation.x, widget->allocation.y, widget->allocation.width, widget->allocation.height); if (bin->child && GTK_WIDGET_VISIBLE (bin->child)) { GtkWidget *child; GtkAllocation child_allocation; guint border_width; child = bin->child; border_width = GTK_CONTAINER (widget)->border_width; child_allocation.x = border_width; child_allocation.y = border_width; if (hb->handle_position == GTK_POS_LEFT) child_allocation.x += DRAG_HANDLE_SIZE; else if (hb->handle_position == GTK_POS_TOP) child_allocation.y += DRAG_HANDLE_SIZE; if (hb->child_detached) { guint float_width; guint float_height; child_allocation.width = child_requisition.width; child_allocation.height = child_requisition.height; float_width = child_allocation.width + 2 * border_width; float_height = child_allocation.height + 2 * border_width; if (hb->handle_position == GTK_POS_LEFT || hb->handle_position == GTK_POS_RIGHT) float_width += DRAG_HANDLE_SIZE; else float_height += DRAG_HANDLE_SIZE; if (GTK_WIDGET_REALIZED (hb)) { gdk_window_resize (hb->float_window, float_width, float_height); gdk_window_move_resize (hb->bin_window, 0, 0, float_width, float_height); } } else { child_allocation.width = MAX (1, (gint)widget->allocation.width - 2 * border_width); child_allocation.height = MAX (1, (gint)widget->allocation.height - 2 * border_width); if (hb->handle_position == GTK_POS_LEFT || hb->handle_position == GTK_POS_RIGHT) child_allocation.width -= DRAG_HANDLE_SIZE; else child_allocation.height -= DRAG_HANDLE_SIZE; if (GTK_WIDGET_REALIZED (hb)) gdk_window_move_resize (hb->bin_window, 0, 0, widget->allocation.width, widget->allocation.height); } gtk_widget_size_allocate (bin->child, &child_allocation); } } static void gtk_handle_box_draw_ghost (GtkHandleBox *hb) { GtkWidget *widget; guint x; guint y; guint width; guint height; widget = GTK_WIDGET (hb); if (hb->handle_position == GTK_POS_LEFT || hb->handle_position == GTK_POS_RIGHT) { x = hb->handle_position == GTK_POS_LEFT ? 0 : widget->allocation.width - DRAG_HANDLE_SIZE; y = 0; width = DRAG_HANDLE_SIZE; height = widget->allocation.height; } else { x = 0; y = hb->handle_position == GTK_POS_TOP ? 0 : widget->allocation.height - DRAG_HANDLE_SIZE; width = widget->allocation.width; height = DRAG_HANDLE_SIZE; } gtk_paint_shadow (widget->style, widget->window, GTK_WIDGET_STATE (widget), GTK_SHADOW_ETCHED_IN, NULL, widget, "handle", x, y, width, height); if (hb->handle_position == GTK_POS_LEFT || hb->handle_position == GTK_POS_RIGHT) gtk_paint_hline (widget->style, widget->window, GTK_WIDGET_STATE (widget), NULL, widget, "handlebox", hb->handle_position == GTK_POS_LEFT ? DRAG_HANDLE_SIZE : 0, hb->handle_position == GTK_POS_LEFT ? widget->allocation.width : widget->allocation.width - DRAG_HANDLE_SIZE, widget->allocation.height / 2); else gtk_paint_vline (widget->style, widget->window, GTK_WIDGET_STATE (widget), NULL, widget, "handlebox", hb->handle_position == GTK_POS_TOP ? DRAG_HANDLE_SIZE : 0, hb->handle_position == GTK_POS_TOP ? widget->allocation.height : widget->allocation.height - DRAG_HANDLE_SIZE, widget->allocation.width / 2); } static void draw_textured_frame (GtkWidget *widget, GdkWindow *window, GdkRectangle *rect, GtkShadowType shadow, GdkRectangle *clip) { gtk_paint_handle (widget->style, window, GTK_STATE_NORMAL, shadow, clip, widget, "handlebox", rect->x, rect->y, rect->width, rect->height, GTK_ORIENTATION_VERTICAL); } void gtk_handle_box_set_shadow_type (GtkHandleBox *handle_box, GtkShadowType type) { g_return_if_fail (GTK_IS_HANDLE_BOX (handle_box)); if ((GtkShadowType) handle_box->shadow_type != type) { handle_box->shadow_type = type; g_object_notify (G_OBJECT (handle_box), "shadow_type"); gtk_widget_queue_resize (GTK_WIDGET (handle_box)); } } /** * gtk_handle_box_get_shadow_type: * @handle_box: a #GtkHandleBox * * Gets the type of shadow drawn around the handle box. See * gtk_handle_box_set_shadow_type(). * * Return value: the type of shadow currently drawn around the handle box. **/ GtkShadowType gtk_handle_box_get_shadow_type (GtkHandleBox *handle_box) { g_return_val_if_fail (GTK_IS_HANDLE_BOX (handle_box), GTK_SHADOW_ETCHED_OUT); return handle_box->shadow_type; } void gtk_handle_box_set_handle_position (GtkHandleBox *handle_box, GtkPositionType position) { g_return_if_fail (GTK_IS_HANDLE_BOX (handle_box)); if ((GtkPositionType) handle_box->handle_position != position) { handle_box->handle_position = position; g_object_notify (G_OBJECT (handle_box), "handle_position"); gtk_widget_queue_resize (GTK_WIDGET (handle_box)); } } /** * gtk_handle_box_get_handle_position: * @handle_box: a #GtkHandleBox * * Gets the handle position of the handle box. See * gtk_handle_box_set_handle_position(). * * Return value: the current handle position. **/ GtkPositionType gtk_handle_box_get_handle_position (GtkHandleBox *handle_box) { g_return_val_if_fail (GTK_IS_HANDLE_BOX (handle_box), GTK_POS_LEFT); return handle_box->handle_position; } void gtk_handle_box_set_snap_edge (GtkHandleBox *handle_box, GtkPositionType edge) { g_return_if_fail (GTK_IS_HANDLE_BOX (handle_box)); if (handle_box->snap_edge != edge) { handle_box->snap_edge = edge; g_object_notify (G_OBJECT (handle_box), "snap_edge"); } } /** * gtk_handle_box_get_snap_edge: * @handle_box: a #GtkHandleBox * * Gets the edge used for determining reattachment of the handle box. See * gtk_handle_box_set_snap_edge(). * * Return value: the edge used for determining reattachment, or (GtkPositionType)-1 if this * is determined (as per default) from the handle position. **/ GtkPositionType gtk_handle_box_get_snap_edge (GtkHandleBox *handle_box) { g_return_val_if_fail (GTK_IS_HANDLE_BOX (handle_box), (GtkPositionType)-1); return handle_box->snap_edge; } static void gtk_handle_box_paint (GtkWidget *widget, GdkEventExpose *event, GdkRectangle *area) { GtkBin *bin; GtkHandleBox *hb; guint width; guint height; GdkRectangle rect; GdkRectangle dest; bin = GTK_BIN (widget); hb = GTK_HANDLE_BOX (widget); gdk_window_get_size (hb->bin_window, &width, &height); if (!event) gtk_paint_box (widget->style, hb->bin_window, GTK_WIDGET_STATE (widget), hb->shadow_type, area, widget, "handlebox_bin", 0, 0, -1, -1); else gtk_paint_box (widget->style, hb->bin_window, GTK_WIDGET_STATE (widget), hb->shadow_type, &event->area, widget, "handlebox_bin", 0, 0, -1, -1); /* We currently draw the handle _above_ the relief of the handlebox. * it could also be drawn on the same level... hb->handle_position == GTK_POS_LEFT ? DRAG_HANDLE_SIZE : 0, hb->handle_position == GTK_POS_TOP ? DRAG_HANDLE_SIZE : 0, width, height);*/ switch (hb->handle_position) { case GTK_POS_LEFT: rect.x = 0; rect.y = 0; rect.width = DRAG_HANDLE_SIZE; rect.height = height; break; case GTK_POS_RIGHT: rect.x = width - DRAG_HANDLE_SIZE; rect.y = 0; rect.width = DRAG_HANDLE_SIZE; rect.height = height; break; case GTK_POS_TOP: rect.x = 0; rect.y = 0; rect.width = width; rect.height = DRAG_HANDLE_SIZE; break; case GTK_POS_BOTTOM: rect.x = 0; rect.y = height - DRAG_HANDLE_SIZE; rect.width = width; rect.height = DRAG_HANDLE_SIZE; break; } if (gdk_rectangle_intersect (event ? &event->area : area, &rect, &dest)) draw_textured_frame (widget, hb->bin_window, &rect, GTK_SHADOW_OUT, event ? &event->area : area); if (bin->child && GTK_WIDGET_VISIBLE (bin->child)) { GdkRectangle child_area; if (!event) /* we were called from draw() */ { if (gtk_widget_intersect (bin->child, area, &child_area)) gtk_widget_draw (bin->child, &child_area); } else /* we were called from expose() */ (* GTK_WIDGET_CLASS (parent_class)->expose_event) (widget, event); } } static gint gtk_handle_box_expose (GtkWidget *widget, GdkEventExpose *event) { GtkHandleBox *hb; if (GTK_WIDGET_DRAWABLE (widget)) { hb = GTK_HANDLE_BOX (widget); if (event->window == widget->window) { if (hb->child_detached) gtk_handle_box_draw_ghost (hb); } else gtk_handle_box_paint (widget, event, NULL); } return FALSE; } static gint gtk_handle_box_button_changed (GtkWidget *widget, GdkEventButton *event) { GtkHandleBox *hb; gboolean event_handled; GdkCursor *fleur; hb = GTK_HANDLE_BOX (widget); event_handled = FALSE; if ((event->button == 1) && (event->type == GDK_BUTTON_PRESS || event->type == GDK_2BUTTON_PRESS)) { GtkWidget *child; gboolean in_handle; if (event->window != hb->bin_window) return FALSE; child = GTK_BIN (hb)->child; if (child) { switch (hb->handle_position) { case GTK_POS_LEFT: in_handle = event->x < DRAG_HANDLE_SIZE; break; case GTK_POS_TOP: in_handle = event->y < DRAG_HANDLE_SIZE; break; case GTK_POS_RIGHT: in_handle = event->x > 2 * GTK_CONTAINER (hb)->border_width + child->allocation.width; break; case GTK_POS_BOTTOM: in_handle = event->y > 2 * GTK_CONTAINER (hb)->border_width + child->allocation.height; break; default: in_handle = FALSE; break; } } else { in_handle = FALSE; event_handled = TRUE; } if (in_handle) { if (event->type == GDK_BUTTON_PRESS) /* Start a drag */ { gint desk_x, desk_y; gint root_x, root_y; gint width, height; gdk_window_get_deskrelative_origin (hb->bin_window, &desk_x, &desk_y); gdk_window_get_origin (hb->bin_window, &root_x, &root_y); gdk_window_get_size (hb->bin_window, &width, &height); hb->float_allocation.x = root_x - event->x_root; hb->float_allocation.y = root_y - event->y_root; hb->float_allocation.width = width; hb->float_allocation.height = height; hb->deskoff_x = desk_x - root_x; hb->deskoff_y = desk_y - root_y; gdk_window_get_origin (widget->window, &root_x, &root_y); gdk_window_get_size (widget->window, &width, &height); hb->attach_allocation.x = root_x; hb->attach_allocation.y = root_y; hb->attach_allocation.width = width; hb->attach_allocation.height = height; hb->in_drag = TRUE; fleur = gdk_cursor_new_for_display (gtk_widget_get_display (widget), GDK_FLEUR); if (gdk_pointer_grab (widget->window, FALSE, (GDK_BUTTON1_MOTION_MASK | GDK_POINTER_MOTION_HINT_MASK | GDK_BUTTON_RELEASE_MASK), NULL, fleur, GDK_CURRENT_TIME) != 0) { hb->in_drag = FALSE; } gdk_cursor_destroy (fleur); event_handled = TRUE; } else if (hb->child_detached) /* Double click */ { gtk_handle_box_reattach (hb); } } } else if (event->type == GDK_BUTTON_RELEASE && hb->in_drag) { if (event->window != widget->window) return FALSE; gdk_display_pointer_ungrab (gtk_widget_get_display (widget), GDK_CURRENT_TIME); hb->in_drag = FALSE; event_handled = TRUE; } return event_handled; } static gint gtk_handle_box_motion (GtkWidget *widget, GdkEventMotion *event) { GtkHandleBox *hb; gint new_x, new_y; gint snap_edge; gboolean is_snapped = FALSE; hb = GTK_HANDLE_BOX (widget); if (!hb->in_drag) return FALSE; if (!hb->in_drag || (event->window != widget->window)) return FALSE; /* Calculate the attachment point on the float, if the float * were detached */ new_x = 0; new_y = 0; gdk_window_get_pointer (gtk_widget_get_root_window (widget), &new_x, &new_y, NULL); new_x += hb->float_allocation.x; new_y += hb->float_allocation.y; snap_edge = hb->snap_edge; if (snap_edge == -1) snap_edge = (hb->handle_position == GTK_POS_LEFT || hb->handle_position == GTK_POS_RIGHT) ? GTK_POS_TOP : GTK_POS_LEFT; /* First, check if the snapped edge is aligned */ switch (snap_edge) { case GTK_POS_TOP: is_snapped = abs (hb->attach_allocation.y - new_y) < TOLERANCE; break; case GTK_POS_BOTTOM: is_snapped = abs (hb->attach_allocation.y + (gint)hb->attach_allocation.height - new_y - (gint)hb->float_allocation.height) < TOLERANCE; break; case GTK_POS_LEFT: is_snapped = abs (hb->attach_allocation.x - new_x) < TOLERANCE; break; case GTK_POS_RIGHT: is_snapped = abs (hb->attach_allocation.x + (gint)hb->attach_allocation.width - new_x - (gint)hb->float_allocation.width) < TOLERANCE; break; } /* Next, check if coordinates in the other direction are sufficiently * aligned */ if (is_snapped) { gint float_pos1 = 0; /* Initialize to suppress warnings */ gint float_pos2 = 0; gint attach_pos1 = 0; gint attach_pos2 = 0; switch (snap_edge) { case GTK_POS_TOP: case GTK_POS_BOTTOM: attach_pos1 = hb->attach_allocation.x; attach_pos2 = hb->attach_allocation.x + hb->attach_allocation.width; float_pos1 = new_x; float_pos2 = new_x + hb->float_allocation.width; break; case GTK_POS_LEFT: case GTK_POS_RIGHT: attach_pos1 = hb->attach_allocation.y; attach_pos2 = hb->attach_allocation.y + hb->attach_allocation.height; float_pos1 = new_y; float_pos2 = new_y + hb->float_allocation.height; break; } is_snapped = ((attach_pos1 - TOLERANCE < float_pos1) && (attach_pos2 + TOLERANCE > float_pos2)) || ((float_pos1 - TOLERANCE < attach_pos1) && (float_pos2 + TOLERANCE > attach_pos2)); } if (is_snapped) { if (hb->child_detached) { hb->child_detached = FALSE; gdk_window_hide (hb->float_window); gdk_window_reparent (hb->bin_window, widget->window, 0, 0); hb->float_window_mapped = FALSE; gtk_signal_emit (GTK_OBJECT (hb), handle_box_signals[SIGNAL_CHILD_ATTACHED], GTK_BIN (hb)->child); gtk_widget_queue_resize (widget); } } else { gint width, height; gdk_window_get_size (hb->float_window, &width, &height); new_x += hb->deskoff_x; new_y += hb->deskoff_y; switch (hb->handle_position) { case GTK_POS_LEFT: new_y += ((gint)hb->float_allocation.height - height) / 2; break; case GTK_POS_RIGHT: new_x += (gint)hb->float_allocation.width - width; new_y += ((gint)hb->float_allocation.height - height) / 2; break; case GTK_POS_TOP: new_x += ((gint)hb->float_allocation.width - width) / 2; break; case GTK_POS_BOTTOM: new_x += ((gint)hb->float_allocation.width - width) / 2; new_y += (gint)hb->float_allocation.height - height; break; } if (hb->child_detached) { gdk_window_move (hb->float_window, new_x, new_y); gdk_window_raise (hb->float_window); } else { gint width; gint height; GtkRequisition child_requisition; hb->child_detached = TRUE; if (GTK_BIN (hb)->child) gtk_widget_get_child_requisition (GTK_BIN (hb)->child, &child_requisition); else { child_requisition.width = 0; child_requisition.height = 0; } width = child_requisition.width + 2 * GTK_CONTAINER (hb)->border_width; height = child_requisition.height + 2 * GTK_CONTAINER (hb)->border_width; if (hb->handle_position == GTK_POS_LEFT || hb->handle_position == GTK_POS_RIGHT) width += DRAG_HANDLE_SIZE; else height += DRAG_HANDLE_SIZE; gdk_window_move_resize (hb->float_window, new_x, new_y, width, height); gdk_window_reparent (hb->bin_window, hb->float_window, 0, 0); gdk_window_set_hints (hb->float_window, new_x, new_y, 0, 0, 0, 0, GDK_HINT_POS); gdk_window_show (hb->float_window); hb->float_window_mapped = TRUE; #if 0 /* this extra move is neccessary if we use decorations, or our * window manager insists on decorations. */ gdk_display_sync (gtk_widget_get_display (widget)); gdk_window_move (hb->float_window, new_x, new_y); gdk_display_sync (gtk_widget_get_display (widget)); #endif /* 0 */ gtk_signal_emit (GTK_OBJECT (hb), handle_box_signals[SIGNAL_CHILD_DETACHED], GTK_BIN (hb)->child); gtk_handle_box_draw_ghost (hb); gtk_widget_queue_resize (widget); } } return TRUE; } static void gtk_handle_box_add (GtkContainer *container, GtkWidget *widget) { gtk_widget_set_parent_window (widget, GTK_HANDLE_BOX (container)->bin_window); GTK_CONTAINER_CLASS (parent_class)->add (container, widget); } static void gtk_handle_box_remove (GtkContainer *container, GtkWidget *widget) { GTK_CONTAINER_CLASS (parent_class)->remove (container, widget); gtk_handle_box_reattach (GTK_HANDLE_BOX (container)); } static gint gtk_handle_box_delete_event (GtkWidget *widget, GdkEventAny *event) { GtkHandleBox *hb = GTK_HANDLE_BOX (widget); if (event->window == hb->float_window) { gtk_handle_box_reattach (hb); return TRUE; } return FALSE; } static void gtk_handle_box_reattach (GtkHandleBox *hb) { GtkWidget *widget = GTK_WIDGET (hb); if (hb->child_detached) { hb->child_detached = FALSE; if (GTK_WIDGET_REALIZED (hb)) { gdk_window_hide (hb->float_window); gdk_window_reparent (hb->bin_window, widget->window, 0, 0); if (GTK_BIN (hb)->child) gtk_signal_emit (GTK_OBJECT (hb), handle_box_signals[SIGNAL_CHILD_ATTACHED], GTK_BIN (hb)->child); } hb->float_window_mapped = FALSE; } if (hb->in_drag) { gdk_display_pointer_ungrab (gtk_widget_get_display (GTK_WIDGET (hb)), GDK_CURRENT_TIME); hb->in_drag = FALSE; } gtk_widget_queue_resize (GTK_WIDGET (hb)); }