1 /* GTK - The GIMP Toolkit
2 * Copyright (C) 1995-1997 Peter Mattis, Spencer Kimball and Josh MacDonald
4 * This library is free software; you can redistribute it and/or
5 * modify it under the terms of the GNU Library General Public
6 * License as published by the Free Software Foundation; either
7 * version 2 of the License, or (at your option) any later version.
9 * This library is distributed in the hope that it will be useful,
10 * but WITHOUT ANY WARRANTY; without even the implied warranty of
11 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
12 * Library General Public License for more details.
14 * You should have received a copy of the GNU Library General Public
15 * License along with this library; if not, write to the Free
16 * Software Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
20 #include "gdk/gdkkeysyms.h"
25 #include "gtkselection.h"
26 #include "gtksignal.h"
28 #include "line-wrap.xbm"
29 #include "line-arrow.xbm"
32 #define INITIAL_BUFFER_SIZE 1024
33 #define INITIAL_LINE_CACHE_SIZE 256
34 #define MIN_GAP_SIZE 256
35 #define LINE_DELIM '\n'
36 #define MIN_TEXT_WIDTH_LINES 20
37 #define MIN_TEXT_HEIGHT_LINES 10
38 #define TEXT_BORDER_ROOM 3
39 #define LINE_WRAP_ROOM 8 /* The bitmaps are 6 wide. */
40 #define DEFAULT_TAB_STOP_WIDTH 4
41 #define SCROLL_PIXELS 5
42 #define KEY_SCROLL_PIXELS 10
44 #define SET_PROPERTY_MARK(m, p, o) do { \
45 (m)->property = (p); \
48 #define MARK_CURRENT_PROPERTY(mark) ((TextProperty*)(mark)->property->data)
49 #define MARK_NEXT_PROPERTY(mark) ((TextProperty*)(mark)->property->next->data)
50 #define MARK_PREV_PROPERTY(mark) ((TextProperty*)((mark)->property->prev ? \
51 (mark)->property->prev->data \
53 #define MARK_PREV_LIST_PTR(mark) ((mark)->property->prev)
54 #define MARK_LIST_PTR(mark) ((mark)->property)
55 #define MARK_NEXT_LIST_PTR(mark) ((mark)->property->next)
56 #define MARK_OFFSET(mark) ((mark)->offset)
57 #define MARK_PROPERTY_LENGTH(mark) (MARK_CURRENT_PROPERTY(mark)->length)
58 #define MARK_CURRENT_FONT(mark) (((TextProperty*)(mark)->property->data)->font->gdk_font)
59 #define MARK_CURRENT_FORE(mark) (&((TextProperty*)(mark)->property->data)->fore_color)
60 #define MARK_CURRENT_BACK(mark) (&((TextProperty*)(mark)->property->data)->back_color)
62 #define MARK_CURRENT_TEXT_FONT(m) (((TextProperty*)(m)->property->data)->font)
63 #define TEXT_LENGTH(t) ((t)->text_end - (t)->gap_size)
64 #define FONT_HEIGHT(f) ((f)->ascent + (f)->descent)
65 #define LINE_HEIGHT(l) ((l).font_ascent + (l).font_descent)
66 #define LINE_CONTAINS(l, i) ((l).start.index <= (i) && (l).end.index >= (i))
67 #define LINE_STARTS_AT(l, i) ((l).start.index == (i))
68 #define LINE_START_PIXEL(l) ((l).tab_cont.pixel_offset)
69 #define LAST_INDEX(t, m) ((m).index == TEXT_LENGTH(t))
70 #define CACHE_DATA(c) (*(LineParams*)(c)->data)
72 typedef struct _TextFont TextFont;
73 typedef struct _TextProperty TextProperty;
74 typedef struct _TabStopMark TabStopMark;
75 typedef struct _PrevTabCont PrevTabCont;
76 typedef struct _FetchLinesData FetchLinesData;
77 typedef struct _LineParams LineParams;
78 typedef struct _SetVerticalScrollData SetVerticalScrollData;
80 typedef gint (*LineIteratorFunction) (GtkText* text, LineParams* lp, void* data);
88 struct _SetVerticalScrollData {
97 /* The actual font. */
100 gint16 char_widths[256];
108 /* Background Color. */
111 /* Foreground Color. */
114 /* Length of this property. */
120 GList* tab_stops; /* Index into list containing the next tab position. If
121 * NULL, using default widths. */
128 TabStopMark tab_start;
131 struct _FetchLinesData
144 guint displayable_chars;
147 PrevTabCont tab_cont;
148 PrevTabCont tab_cont_next;
150 GtkPropertyMark start;
155 static void gtk_text_class_init (GtkTextClass *klass);
156 static void gtk_text_init (GtkText *text);
157 static void gtk_text_finalize (GtkObject *object);
158 static void gtk_text_realize (GtkWidget *widget);
159 static void gtk_text_unrealize (GtkWidget *widget);
160 static void gtk_text_draw_focus (GtkWidget *widget);
161 static void gtk_text_size_request (GtkWidget *widget,
162 GtkRequisition *requisition);
163 static void gtk_text_size_allocate (GtkWidget *widget,
164 GtkAllocation *allocation);
165 static void gtk_text_adjustment (GtkAdjustment *adjustment,
167 static void gtk_text_disconnect (GtkAdjustment *adjustment,
170 static void gtk_text_insert_text (GtkEditable *editable,
171 const gchar *new_text,
172 gint new_text_length,
174 static void gtk_text_delete_text (GtkEditable *editable,
177 static void gtk_text_update_text (GtkEditable *editable,
180 static gchar *gtk_text_get_chars (GtkEditable *editable,
183 static void gtk_text_set_selection (GtkEditable *editable,
188 static void gtk_text_draw (GtkWidget *widget,
190 static gint gtk_text_expose (GtkWidget *widget,
191 GdkEventExpose *event);
192 static gint gtk_text_button_press (GtkWidget *widget,
193 GdkEventButton *event);
194 static gint gtk_text_button_release (GtkWidget *widget,
195 GdkEventButton *event);
196 static gint gtk_text_motion_notify (GtkWidget *widget,
197 GdkEventMotion *event);
198 static gint gtk_text_key_press (GtkWidget *widget,
200 static gint gtk_text_focus_in (GtkWidget *widget,
201 GdkEventFocus *event);
202 static gint gtk_text_focus_out (GtkWidget *widget,
203 GdkEventFocus *event);
205 static void move_gap_to_point (GtkText* text);
206 static void make_forward_space (GtkText* text, guint len);
207 static void insert_text_property (GtkText* text, GdkFont* font,
208 GdkColor *fore, GdkColor* back, guint len);
209 static void delete_text_property (GtkText* text, guint len);
210 static void init_properties (GtkText *text);
211 static guint pixel_height_of (GtkText* text, GList* cache_line);
213 /* Property Movement and Size Computations */
214 static void advance_mark (GtkPropertyMark* mark);
215 static void decrement_mark (GtkPropertyMark* mark);
216 static void advance_mark_n (GtkPropertyMark* mark, gint n);
217 static void decrement_mark_n (GtkPropertyMark* mark, gint n);
218 static void move_mark_n (GtkPropertyMark* mark, gint n);
219 static GtkPropertyMark find_mark (GtkText* text, guint mark_position);
220 static GtkPropertyMark find_mark_near (GtkText* text, guint mark_position, const GtkPropertyMark* near);
221 static void find_line_containing_point (GtkText* text, guint point);
222 static TextProperty* new_text_property (GdkFont* font, GdkColor* fore, GdkColor* back, guint length);
225 static void compute_lines_pixels (GtkText* text, gint char_count,
226 guint *lines, guint *pixels);
228 static gint total_line_height (GtkText* text,
231 static LineParams find_line_params (GtkText* text,
232 const GtkPropertyMark *mark,
233 const PrevTabCont *tab_cont,
234 PrevTabCont *next_cont);
235 static void recompute_geometry (GtkText* text);
236 static void insert_expose (GtkText* text, guint old_pixels, gint nchars, guint new_line_count);
237 static void delete_expose (GtkText* text,
241 static void clear_area (GtkText *text, GdkRectangle *area);
242 static void draw_line (GtkText* text,
245 static void draw_line_wrap (GtkText* text,
247 static void draw_cursor (GtkText* text, gint absolute);
248 static void undraw_cursor (GtkText* text, gint absolute);
249 static gint drawn_cursor_min (GtkText* text);
250 static gint drawn_cursor_max (GtkText* text);
251 static void expose_text (GtkText* text, GdkRectangle *area, gboolean cursor);
253 /* Search and Placement. */
254 static void find_cursor (GtkText* text);
255 static void find_cursor_at_line (GtkText* text,
256 const LineParams* start_line,
258 static void find_mouse_cursor (GtkText* text, gint x, gint y);
261 static void adjust_adj (GtkText* text, GtkAdjustment* adj);
262 static void scroll_up (GtkText* text, gint diff);
263 static void scroll_down (GtkText* text, gint diff);
264 static void scroll_int (GtkText* text, gint diff);
266 static void process_exposes (GtkText *text);
268 /* Cache Management. */
269 static GList* remove_cache_line (GtkText* text, GList* list);
272 static void move_cursor_buffer_ver (GtkText *text, int dir);
273 static void move_cursor_page_ver (GtkText *text, int dir);
274 static void move_cursor_ver (GtkText *text, int count);
275 static void move_cursor_hor (GtkText *text, int count);
277 static void gtk_text_move_forward_character (GtkText *text);
278 static void gtk_text_move_backward_character (GtkText *text);
279 static void gtk_text_move_forward_word (GtkText *text);
280 static void gtk_text_move_backward_word (GtkText *text);
281 static void gtk_text_move_beginning_of_line (GtkText *text);
282 static void gtk_text_move_end_of_line (GtkText *text);
283 static void gtk_text_delete_forward_character (GtkText *text);
284 static void gtk_text_delete_backward_character (GtkText *text);
285 static void gtk_text_delete_forward_word (GtkText *text);
286 static void gtk_text_delete_backward_word (GtkText *text);
287 static void gtk_text_delete_line (GtkText *text);
288 static void gtk_text_delete_to_line_end (GtkText *text);
289 static void gtk_text_select_word (GtkText *text);
290 static void gtk_text_select_line (GtkText *text);
292 /* #define DEBUG_GTK_TEXT */
294 #if defined(DEBUG_GTK_TEXT) && defined(__GNUC__)
295 /* Debugging utilities. */
296 static void gtk_text_assert_mark (GtkText *text,
297 GtkPropertyMark *mark,
298 GtkPropertyMark *before,
299 GtkPropertyMark *after,
304 static void gtk_text_assert (GtkText *text,
307 static void gtk_text_show_cache_line (GtkText *text, GList *cache,
308 const char* what, const char* func, gint line);
309 static void gtk_text_show_cache (GtkText *text, const char* func, gint line);
310 static void gtk_text_show_adj (GtkText *text,
315 static void gtk_text_show_props (GtkText* test,
319 #define TDEBUG(args) g_print args
320 #define TEXT_ASSERT(text) gtk_text_assert (text,__PRETTY_FUNCTION__,__LINE__)
321 #define TEXT_ASSERT_MARK(text,mark,msg) gtk_text_assert_mark (text,mark, \
322 __PRETTY_FUNCTION__,msg,__LINE__)
323 #define TEXT_SHOW(text) gtk_text_show_cache (text, __PRETTY_FUNCTION__,__LINE__)
324 #define TEXT_SHOW_LINE(text,line,msg) gtk_text_show_cache_line (text,line,msg,\
325 __PRETTY_FUNCTION__,__LINE__)
326 #define TEXT_SHOW_ADJ(text,adj,msg) gtk_text_show_adj (text,adj,msg, \
327 __PRETTY_FUNCTION__,__LINE__)
330 #define TEXT_ASSERT(text)
331 #define TEXT_ASSERT_MARK(text,mark,msg)
332 #define TEXT_SHOW(text)
333 #define TEXT_SHOW_LINE(text,line,msg)
334 #define TEXT_SHOW_ADJ(text,adj,msg)
337 /* Memory Management. */
338 static GMemChunk *params_mem_chunk = NULL;
339 static GMemChunk *text_property_chunk = NULL;
341 static GtkWidgetClass *parent_class = NULL;
344 static GtkTextFunction control_keys[26] =
346 (GtkTextFunction)gtk_text_move_beginning_of_line, /* a */
347 (GtkTextFunction)gtk_text_move_backward_character, /* b */
348 gtk_editable_copy_clipboard, /* c */
349 (GtkTextFunction)gtk_text_delete_forward_character, /* d */
350 (GtkTextFunction)gtk_text_move_end_of_line, /* e */
351 (GtkTextFunction)gtk_text_move_forward_character, /* f */
353 (GtkTextFunction)gtk_text_delete_backward_character, /* h */
356 (GtkTextFunction)gtk_text_delete_to_line_end, /* k */
366 (GtkTextFunction)gtk_text_delete_line, /* u */
367 gtk_editable_paste_clipboard, /* v */
368 (GtkTextFunction)gtk_text_delete_backward_word, /* w */
369 gtk_editable_cut_clipboard, /* x */
374 static GtkTextFunction alt_keys[26] =
377 (GtkTextFunction)gtk_text_move_backward_word, /* b */
379 (GtkTextFunction)gtk_text_delete_forward_word, /* d */
381 (GtkTextFunction)gtk_text_move_forward_word, /* f */
405 /**********************************************************************/
407 /**********************************************************************/
412 static guint text_type = 0;
416 GtkTypeInfo text_info =
420 sizeof (GtkTextClass),
421 (GtkClassInitFunc) gtk_text_class_init,
422 (GtkObjectInitFunc) gtk_text_init,
423 (GtkArgSetFunc) NULL,
424 (GtkArgGetFunc) NULL,
427 text_type = gtk_type_unique (gtk_editable_get_type (), &text_info);
434 gtk_text_class_init (GtkTextClass *class)
436 GtkObjectClass *object_class;
437 GtkWidgetClass *widget_class;
438 GtkEditableClass *editable_class;
440 object_class = (GtkObjectClass*) class;
441 widget_class = (GtkWidgetClass*) class;
442 editable_class = (GtkEditableClass*) class;
444 parent_class = gtk_type_class (gtk_widget_get_type ());
446 object_class->finalize = gtk_text_finalize;
448 widget_class->realize = gtk_text_realize;
449 widget_class->unrealize = gtk_text_unrealize;
450 widget_class->draw_focus = gtk_text_draw_focus;
451 widget_class->size_request = gtk_text_size_request;
452 widget_class->size_allocate = gtk_text_size_allocate;
453 widget_class->draw = gtk_text_draw;
454 widget_class->expose_event = gtk_text_expose;
455 widget_class->button_press_event = gtk_text_button_press;
456 widget_class->button_release_event = gtk_text_button_release;
457 widget_class->motion_notify_event = gtk_text_motion_notify;
458 widget_class->key_press_event = gtk_text_key_press;
459 widget_class->focus_in_event = gtk_text_focus_in;
460 widget_class->focus_out_event = gtk_text_focus_out;
462 editable_class->insert_text = gtk_text_insert_text;
463 editable_class->delete_text = gtk_text_delete_text;
464 editable_class->update_text = gtk_text_update_text;
465 editable_class->get_chars = gtk_text_get_chars;
466 editable_class->set_selection = gtk_text_set_selection;
470 gtk_text_init (GtkText *text)
472 GTK_WIDGET_SET_FLAGS (text, GTK_CAN_FOCUS);
474 text->text = g_new (guchar, INITIAL_BUFFER_SIZE);
475 text->text_len = INITIAL_BUFFER_SIZE;
477 if (!params_mem_chunk)
478 params_mem_chunk = g_mem_chunk_new ("LineParams",
480 256 * sizeof (LineParams),
483 text->default_tab_width = 4;
484 text->tab_stops = NULL;
486 text->tab_stops = g_list_prepend (text->tab_stops, (void*)8);
487 text->tab_stops = g_list_prepend (text->tab_stops, (void*)8);
489 text->line_wrap = TRUE;
490 GTK_EDITABLE(text)->editable = FALSE;
494 gtk_text_new (GtkAdjustment *hadj,
499 text = gtk_type_new (gtk_text_get_type ());
501 gtk_text_set_adjustments (text, hadj, vadj);
503 return GTK_WIDGET (text);
507 gtk_text_set_editable (GtkText *text,
510 g_return_if_fail (text != NULL);
511 g_return_if_fail (GTK_IS_TEXT (text));
513 GTK_EDITABLE(text)->editable = (editable != FALSE);
517 gtk_text_set_adjustments (GtkText *text,
521 g_return_if_fail (text != NULL);
522 g_return_if_fail (GTK_IS_TEXT (text));
524 if (text->hadj && (text->hadj != hadj))
526 gtk_signal_disconnect_by_data (GTK_OBJECT (text->hadj), text);
527 gtk_object_unref (GTK_OBJECT (text->hadj));
530 if (text->vadj && (text->vadj != vadj))
532 gtk_signal_disconnect_by_data (GTK_OBJECT (text->vadj), text);
533 gtk_object_unref (GTK_OBJECT (text->vadj));
537 hadj = GTK_ADJUSTMENT (gtk_adjustment_new (0.0, 0.0, 0.0, 0.0, 0.0, 0.0));
540 vadj = GTK_ADJUSTMENT (gtk_adjustment_new (0.0, 0.0, 0.0, 0.0, 0.0, 0.0));
542 if (text->hadj != hadj)
545 gtk_object_ref (GTK_OBJECT (text->hadj));
546 gtk_object_sink (GTK_OBJECT (text->hadj));
548 gtk_signal_connect (GTK_OBJECT (text->hadj), "changed",
549 (GtkSignalFunc) gtk_text_adjustment,
551 gtk_signal_connect (GTK_OBJECT (text->hadj), "value_changed",
552 (GtkSignalFunc) gtk_text_adjustment,
554 gtk_signal_connect (GTK_OBJECT (text->hadj), "disconnect",
555 (GtkSignalFunc) gtk_text_disconnect,
559 if (text->vadj != vadj)
562 gtk_object_ref (GTK_OBJECT (text->vadj));
563 gtk_object_sink (GTK_OBJECT (text->vadj));
565 gtk_signal_connect (GTK_OBJECT (text->vadj), "changed",
566 (GtkSignalFunc) gtk_text_adjustment,
568 gtk_signal_connect (GTK_OBJECT (text->vadj), "value_changed",
569 (GtkSignalFunc) gtk_text_adjustment,
571 gtk_signal_connect (GTK_OBJECT (text->vadj), "disconnect",
572 (GtkSignalFunc) gtk_text_disconnect,
578 gtk_text_set_point (GtkText *text,
581 g_return_if_fail (text != NULL);
582 g_return_if_fail (GTK_IS_TEXT (text));
583 g_return_if_fail (index >= 0 && index <= TEXT_LENGTH (text));
585 text->point = find_mark (text, index);
589 gtk_text_get_point (GtkText *text)
591 g_return_val_if_fail (text != NULL, 0);
592 g_return_val_if_fail (GTK_IS_TEXT (text), 0);
594 return text->point.index;
598 gtk_text_get_length (GtkText *text)
600 g_return_val_if_fail (text != NULL, 0);
601 g_return_val_if_fail (GTK_IS_TEXT (text), 0);
603 return TEXT_LENGTH (text);
607 gtk_text_freeze (GtkText *text)
609 g_return_if_fail (text != NULL);
610 g_return_if_fail (GTK_IS_TEXT (text));
616 gtk_text_thaw (GtkText *text)
618 g_return_if_fail (text != NULL);
619 g_return_if_fail (GTK_IS_TEXT (text));
621 text->freeze = FALSE;
623 if (GTK_WIDGET_DRAWABLE (text))
625 recompute_geometry (text);
626 gtk_widget_queue_draw (GTK_WIDGET (text));
631 gtk_text_insert (GtkText *text,
639 GtkEditable *editable = GTK_EDITABLE (text);
641 gint new_line_count = 1;
642 guint old_height = 0;
644 g_return_if_fail (text != NULL);
645 g_return_if_fail (GTK_IS_TEXT (text));
647 g_assert (GTK_WIDGET_REALIZED (text));
650 fore = >K_WIDGET (text)->style->text[GTK_STATE_NORMAL];
652 back = >K_WIDGET (text)->style->base[GTK_STATE_NORMAL];
654 /* This must be because we need to have the style set up. */
655 g_assert (GTK_WIDGET_REALIZED(text));
658 length = strlen (chars);
663 if (!text->freeze && (text->line_start_cache != NULL))
665 find_line_containing_point (text, text->point.index);
666 old_height = total_line_height (text, text->current_line, 1);
667 for (i=0; i<length; i++)
668 if (chars[i] == '\n')
672 if (text->point.index < text->first_line_start_index)
673 text->first_line_start_index += length;
675 if (text->point.index < editable->selection_start_pos)
676 editable->selection_start_pos += length;
677 if (text->point.index < editable->selection_end_pos)
678 editable->selection_end_pos += length;
680 move_gap_to_point (text);
683 font = GTK_WIDGET (text)->style->font;
685 make_forward_space (text, length);
687 memcpy (text->text + text->gap_position, chars, length);
689 insert_text_property (text, font, fore, back, length);
691 text->gap_size -= length;
692 text->gap_position += length;
694 advance_mark_n (&text->point, length);
696 if (!text->freeze && (text->line_start_cache != NULL))
697 insert_expose (text, old_height, length, new_line_count);
701 gtk_text_backward_delete (GtkText *text,
704 g_return_val_if_fail (text != NULL, 0);
705 g_return_val_if_fail (GTK_IS_TEXT (text), 0);
707 if (nchars > text->point.index || nchars <= 0)
710 gtk_text_set_point (text, text->point.index - nchars);
712 return gtk_text_forward_delete (text, nchars);
716 gtk_text_forward_delete (GtkText *text,
719 guint old_lines, old_height;
720 GtkEditable *editable = GTK_EDITABLE (text);
722 g_return_val_if_fail (text != NULL, 0);
723 g_return_val_if_fail (GTK_IS_TEXT (text), 0);
725 if (text->point.index + nchars > TEXT_LENGTH (text) || nchars <= 0)
728 if (!text->freeze && (text->line_start_cache != NULL))
730 find_line_containing_point (text, text->point.index);
731 compute_lines_pixels (text, nchars, &old_lines, &old_height);
734 if (text->point.index < text->first_line_start_index)
736 if (text->point.index >= text->first_line_start_index - nchars)
738 text->first_line_start_index = text->point.index;
739 while ((text->first_line_start_index > 0) &&
740 (GTK_TEXT_INDEX (text, text->first_line_start_index - 1) != LINE_DELIM))
741 text->first_line_start_index -= 1;
745 text->first_line_start_index -= nchars;
748 if (text->point.index < editable->selection_start_pos)
749 editable->selection_start_pos -= nchars;
750 if (text->point.index < editable->selection_end_pos)
751 editable->selection_end_pos -= nchars;
753 move_gap_to_point (text);
755 text->gap_size += nchars;
757 delete_text_property (text, nchars);
759 if (!text->freeze && (text->line_start_cache != NULL))
760 delete_expose (text, nchars, old_lines, old_height);
766 gtk_text_get_chars (GtkEditable *editable,
777 end_pos = TEXT_LENGTH (text);
779 g_return_val_if_fail (editable != NULL, NULL);
780 g_return_val_if_fail (GTK_IS_TEXT (editable), NULL);
781 text = GTK_TEXT (editable);
783 if (end_pos > TEXT_LENGTH (text))
786 nchars = end_pos - start_pos;
788 retval = g_new (gchar, nchars+1);
791 if (start_pos < text->gap_position)
793 n = MIN (text->gap_position - start_pos, nchars);
794 memcpy (p, &text->text[start_pos], n);
800 if (start_pos+nchars >= text->gap_position)
803 text->text + MAX (text->gap_position + text->gap_size,
804 start_pos + text->gap_size),
816 gtk_text_finalize (GtkObject *object)
820 g_return_if_fail (object != NULL);
821 g_return_if_fail (GTK_IS_TEXT (object));
823 text = (GtkText *)object;
825 gtk_object_unref (GTK_OBJECT (text->hadj));
827 gtk_object_unref (GTK_OBJECT (text->vadj));
830 if (GTK_EDITABLE(text)->ic)
832 gdk_ic_destroy (GTK_EDITABLE(text)->ic);
833 GTK_EDITABLE(text)->ic = NULL;
837 GTK_OBJECT_CLASS(parent_class)->finalize (object);
841 gtk_text_realize (GtkWidget *widget)
844 GtkEditable *editable;
845 GdkWindowAttr attributes;
846 gint attributes_mask;
848 g_return_if_fail (widget != NULL);
849 g_return_if_fail (GTK_IS_TEXT (widget));
851 text = GTK_TEXT (widget);
852 editable = GTK_EDITABLE (widget);
853 GTK_WIDGET_SET_FLAGS (text, GTK_REALIZED);
855 attributes.window_type = GDK_WINDOW_CHILD;
856 attributes.x = widget->allocation.x;
857 attributes.y = widget->allocation.y;
858 attributes.width = widget->allocation.width;
859 attributes.height = widget->allocation.height;
860 attributes.wclass = GDK_INPUT_OUTPUT;
861 attributes.visual = gtk_widget_get_visual (widget);
862 attributes.colormap = gtk_widget_get_colormap (widget);
863 attributes.event_mask = gtk_widget_get_events (widget);
864 attributes.event_mask |= (GDK_EXPOSURE_MASK |
865 GDK_BUTTON_PRESS_MASK |
866 GDK_BUTTON_RELEASE_MASK |
867 GDK_BUTTON_MOTION_MASK |
868 GDK_ENTER_NOTIFY_MASK |
869 GDK_LEAVE_NOTIFY_MASK |
871 attributes_mask = GDK_WA_X | GDK_WA_Y | GDK_WA_VISUAL | GDK_WA_COLORMAP;
873 widget->window = gdk_window_new (gtk_widget_get_parent_window (widget), &attributes, attributes_mask);
874 gdk_window_set_user_data (widget->window, text);
876 attributes.x = (widget->style->klass->xthickness + TEXT_BORDER_ROOM);
877 attributes.y = (widget->style->klass->ythickness + TEXT_BORDER_ROOM);
878 attributes.width = widget->allocation.width - attributes.x * 2;
879 attributes.height = widget->allocation.height - attributes.y * 2;
881 text->text_area = gdk_window_new (widget->window, &attributes, attributes_mask);
882 gdk_window_set_user_data (text->text_area, text);
884 widget->style = gtk_style_attach (widget->style, widget->window);
886 /* Can't call gtk_style_set_background here because its handled specially */
887 if (!widget->style->bg_pixmap[GTK_STATE_NORMAL])
888 gdk_window_set_background (widget->window, &widget->style->base[GTK_STATE_NORMAL]);
890 if (!widget->style->bg_pixmap[GTK_STATE_NORMAL])
891 gdk_window_set_background (text->text_area, &widget->style->base[GTK_STATE_NORMAL]);
893 text->line_wrap_bitmap = gdk_bitmap_create_from_data (text->text_area,
894 (gchar*) line_wrap_bits,
898 text->line_arrow_bitmap = gdk_bitmap_create_from_data (text->text_area,
899 (gchar*) line_arrow_bits,
903 text->gc = gdk_gc_new (text->text_area);
904 gdk_gc_set_exposures (text->gc, TRUE);
905 gdk_gc_set_foreground (text->gc, &widget->style->text[GTK_STATE_NORMAL]);
915 GdkIMStyle supported_style = GdkIMPreeditNone | GdkIMPreeditNothing |
916 GdkIMPreeditPosition |
917 GdkIMStatusNone | GdkIMStatusNothing;
919 if (widget->style && widget->style->font->type != GDK_FONT_FONTSET)
920 supported_style &= ~GdkIMPreeditPosition;
922 style = gdk_im_decide_style (supported_style);
923 switch (style & GdkIMPreeditMask)
925 case GdkIMPreeditPosition:
926 if (widget->style && widget->style->font->type != GDK_FONT_FONTSET)
928 g_warning ("over-the-spot style requires fontset");
931 gdk_window_get_size (text->text_area, &width, &height);
935 rect.height = height;
939 editable->ic = gdk_ic_new (text->text_area, text->text_area,
941 "spotLocation", &spot,
943 "fontSet", GDK_FONT_XFONT (widget->style->font),
947 editable->ic = gdk_ic_new (text->text_area, text->text_area,
951 if (editable->ic == NULL)
952 g_warning ("Can't create input context.");
955 GdkColormap *colormap;
957 mask = gdk_window_get_events (text->text_area);
958 mask |= gdk_ic_get_events (editable->ic);
959 gdk_window_set_events (text->text_area, mask);
961 if ((colormap = gtk_widget_get_colormap (widget)) !=
962 gtk_widget_get_default_colormap ())
964 gdk_ic_set_attr (editable->ic, "preeditAttributes",
965 "colorMap", GDK_COLORMAP_XCOLORMAP (colormap),
972 init_properties (text);
974 gdk_window_show (text->text_area);
976 if (editable->selection_start_pos != editable->selection_end_pos)
977 gtk_editable_claim_selection (editable, TRUE, GDK_CURRENT_TIME);
981 gtk_text_unrealize (GtkWidget *widget)
985 g_return_if_fail (widget != NULL);
986 g_return_if_fail (GTK_IS_TEXT (widget));
988 text = GTK_TEXT (widget);
990 gdk_window_set_user_data (text->text_area, NULL);
991 gdk_window_destroy (text->text_area);
992 text->text_area = NULL;
994 gdk_gc_destroy (text->gc);
997 if (GTK_WIDGET_CLASS (parent_class)->unrealize)
998 (* GTK_WIDGET_CLASS (parent_class)->unrealize) (widget);
1002 clear_focus_area (GtkText *text, gint area_x, gint area_y, gint area_width, gint area_height)
1004 GtkWidget *widget = GTK_WIDGET (text);
1006 gint ythick = TEXT_BORDER_ROOM + widget->style->klass->ythickness;
1007 gint xthick = TEXT_BORDER_ROOM + widget->style->klass->xthickness;
1013 gdk_window_get_size (widget->style->bg_pixmap[GTK_STATE_NORMAL], &width, &height);
1015 yorig = - text->first_onscreen_ver_pixel + ythick;
1016 xorig = - text->first_onscreen_hor_pixel + xthick;
1024 for (y = area_y; y < area_y + area_height; )
1026 gint yoff = (y - yorig) % height;
1027 gint yw = MIN(height - yoff, (area_y + area_height) - y);
1029 for (x = area_x; x < area_x + area_width; )
1031 gint xoff = (x - xorig) % width;
1032 gint xw = MIN(width - xoff, (area_x + area_width) - x);
1034 gdk_draw_pixmap (widget->window,
1036 widget->style->bg_pixmap[GTK_STATE_NORMAL],
1051 gtk_text_draw_focus (GtkWidget *widget)
1057 g_return_if_fail (widget != NULL);
1058 g_return_if_fail (GTK_IS_TEXT (widget));
1060 text = GTK_TEXT (widget);
1062 if (GTK_WIDGET_DRAWABLE (widget))
1064 TDEBUG (("in gtk_text_draw_focus\n"));
1068 width = widget->allocation.width;
1069 height = widget->allocation.height;
1071 if (widget->style->bg_pixmap[GTK_STATE_NORMAL])
1073 gint ythick = TEXT_BORDER_ROOM + widget->style->klass->ythickness;
1074 gint xthick = TEXT_BORDER_ROOM + widget->style->klass->xthickness;
1077 clear_focus_area (text, 0, 0, width, ythick);
1079 clear_focus_area (text, 0, ythick, xthick, height - 2 * ythick);
1081 clear_focus_area (text, width - xthick, ythick, xthick, height - 2 * ythick);
1083 clear_focus_area (text, 0, height - ythick, width, ythick);
1086 if (GTK_WIDGET_HAS_FOCUS (widget))
1093 gdk_draw_rectangle (widget->window,
1094 widget->style->fg_gc[GTK_STATE_NORMAL],
1096 widget->allocation.width - 1,
1097 widget->allocation.height - 1);
1101 gdk_draw_rectangle (widget->window,
1102 widget->style->white_gc, FALSE,
1109 gtk_draw_shadow (widget->style, widget->window,
1110 GTK_STATE_NORMAL, GTK_SHADOW_IN,
1111 x, y, width, height);
1115 TDEBUG (("in gtk_text_draw_focus (undrawable !!!)\n"));
1120 gtk_text_size_request (GtkWidget *widget,
1121 GtkRequisition *requisition)
1128 g_return_if_fail (widget != NULL);
1129 g_return_if_fail (GTK_IS_TEXT (widget));
1130 g_return_if_fail (requisition != NULL);
1132 xthickness = widget->style->klass->xthickness + TEXT_BORDER_ROOM;
1133 ythickness = widget->style->klass->ythickness + TEXT_BORDER_ROOM;
1135 char_height = MIN_TEXT_HEIGHT_LINES * (widget->style->font->ascent +
1136 widget->style->font->descent);
1138 char_width = MIN_TEXT_WIDTH_LINES * (gdk_text_width (widget->style->font,
1139 "ABCDEFGHIJKLMNOPQRSTUVWXYZ",
1143 requisition->width = char_width + xthickness * 2;
1144 requisition->height = char_height + ythickness * 2;
1148 gtk_text_size_allocate (GtkWidget *widget,
1149 GtkAllocation *allocation)
1152 GtkEditable *editable;
1154 g_return_if_fail (widget != NULL);
1155 g_return_if_fail (GTK_IS_TEXT (widget));
1156 g_return_if_fail (allocation != NULL);
1158 text = GTK_TEXT (widget);
1159 editable = GTK_EDITABLE (widget);
1161 widget->allocation = *allocation;
1162 if (GTK_WIDGET_REALIZED (widget))
1164 gdk_window_move_resize (widget->window,
1165 allocation->x, allocation->y,
1166 allocation->width, allocation->height);
1168 gdk_window_move_resize (text->text_area,
1169 widget->style->klass->xthickness + TEXT_BORDER_ROOM,
1170 widget->style->klass->ythickness + TEXT_BORDER_ROOM,
1171 widget->allocation.width - (widget->style->klass->xthickness +
1172 TEXT_BORDER_ROOM) * 2,
1173 widget->allocation.height - (widget->style->klass->ythickness +
1174 TEXT_BORDER_ROOM) * 2);
1177 if (editable->ic && (gdk_ic_get_style (editable->ic) & GdkIMPreeditPosition))
1182 gdk_window_get_size (text->text_area, &width, &height);
1186 rect.height = height;
1187 gdk_ic_set_attr (editable->ic, "preeditAttributes", "area", &rect, NULL);
1191 recompute_geometry (text);
1196 gtk_text_draw (GtkWidget *widget,
1199 g_return_if_fail (widget != NULL);
1200 g_return_if_fail (GTK_IS_TEXT (widget));
1201 g_return_if_fail (area != NULL);
1203 if (GTK_WIDGET_DRAWABLE (widget))
1205 expose_text (GTK_TEXT (widget), area, TRUE);
1206 gtk_widget_draw_focus (widget);
1211 gtk_text_expose (GtkWidget *widget,
1212 GdkEventExpose *event)
1214 g_return_val_if_fail (widget != NULL, FALSE);
1215 g_return_val_if_fail (GTK_IS_TEXT (widget), FALSE);
1216 g_return_val_if_fail (event != NULL, FALSE);
1218 if (event->window == GTK_TEXT (widget)->text_area)
1220 TDEBUG (("in gtk_text_expose (expose)\n"));
1221 expose_text (GTK_TEXT (widget), &event->area, TRUE);
1223 else if (event->count == 0)
1225 TDEBUG (("in gtk_text_expose (focus)\n"));
1226 gtk_widget_draw_focus (widget);
1233 gtk_text_button_press (GtkWidget *widget,
1234 GdkEventButton *event)
1237 GtkEditable *editable;
1238 static GdkAtom ctext_atom = GDK_NONE;
1240 g_return_val_if_fail (widget != NULL, FALSE);
1241 g_return_val_if_fail (GTK_IS_TEXT (widget), FALSE);
1242 g_return_val_if_fail (event != NULL, FALSE);
1244 if (ctext_atom == GDK_NONE)
1245 ctext_atom = gdk_atom_intern ("COMPOUND_TEXT", FALSE);
1247 text = GTK_TEXT (widget);
1248 editable = GTK_EDITABLE (widget);
1250 if (!GTK_WIDGET_HAS_FOCUS (widget))
1251 gtk_widget_grab_focus (widget);
1253 if (event->type == GDK_BUTTON_PRESS && event->button != 2)
1254 gtk_grab_add (widget);
1256 if (event->button == 1)
1258 switch (event->type)
1260 case GDK_BUTTON_PRESS:
1261 undraw_cursor (text, FALSE);
1262 find_mouse_cursor (text, event->x, event->y);
1263 draw_cursor (text, FALSE);
1265 gtk_text_set_selection (GTK_EDITABLE(text),
1266 text->cursor_mark.index,
1267 text->cursor_mark.index);
1270 case GDK_2BUTTON_PRESS:
1271 gtk_text_select_word (text);
1274 case GDK_3BUTTON_PRESS:
1275 gtk_text_select_line (text);
1282 else if (event->type == GDK_BUTTON_PRESS)
1284 if (event->button == 2)
1286 if (editable->selection_start_pos == editable->selection_end_pos ||
1287 editable->has_selection)
1289 undraw_cursor (text, FALSE);
1290 find_mouse_cursor (text, event->x, event->y);
1291 draw_cursor (text, FALSE);
1295 gtk_selection_convert (widget, GDK_SELECTION_PRIMARY,
1296 ctext_atom, event->time);
1300 undraw_cursor (text, FALSE);
1301 find_mouse_cursor (text, event->x, event->y);
1302 draw_cursor (text, FALSE);
1304 gtk_text_set_selection (GTK_EDITABLE(text),
1305 text->cursor_mark.index,
1306 text->cursor_mark.index);
1314 gtk_text_button_release (GtkWidget *widget,
1315 GdkEventButton *event)
1318 GtkEditable *editable;
1319 g_return_val_if_fail (widget != NULL, FALSE);
1320 g_return_val_if_fail (GTK_IS_TEXT (widget), FALSE);
1321 g_return_val_if_fail (event != NULL, FALSE);
1323 text = GTK_TEXT (widget);
1325 if (event->button == 1)
1327 text = GTK_TEXT (widget);
1328 editable = GTK_EDITABLE (widget);
1330 gtk_grab_remove (widget);
1332 editable->has_selection = FALSE;
1333 if (editable->selection_start_pos != editable->selection_end_pos)
1335 if (gtk_selection_owner_set (widget,
1336 GDK_SELECTION_PRIMARY,
1339 editable->has_selection = TRUE;
1340 gtk_text_update_text (editable, editable->selection_start_pos,
1341 editable->selection_end_pos);
1346 if (gdk_selection_owner_get (GDK_SELECTION_PRIMARY) == widget->window)
1347 gtk_selection_owner_set (NULL, GDK_SELECTION_PRIMARY, event->time);
1350 else if (event->button == 3)
1352 gtk_grab_remove (widget);
1353 if (gdk_selection_owner_get (GDK_SELECTION_PRIMARY) == widget->window)
1354 gtk_selection_owner_set (NULL, GDK_SELECTION_PRIMARY, event->time);
1361 gtk_text_motion_notify (GtkWidget *widget,
1362 GdkEventMotion *event)
1367 g_return_val_if_fail (widget != NULL, FALSE);
1368 g_return_val_if_fail (GTK_IS_TEXT (widget), FALSE);
1369 g_return_val_if_fail (event != NULL, FALSE);
1371 text = GTK_TEXT (widget);
1374 if (event->is_hint || (text->text_area != event->window))
1375 gdk_window_get_pointer (text->text_area, &x, NULL, NULL);
1377 undraw_cursor (GTK_TEXT (widget), FALSE);
1378 find_mouse_cursor (GTK_TEXT (widget), event->x, event->y);
1379 draw_cursor (GTK_TEXT (widget), FALSE);
1381 gtk_text_set_selection (GTK_EDITABLE(text),
1382 GTK_EDITABLE(text)->selection_start_pos,
1383 text->cursor_mark.index);
1389 gtk_text_insert_1_at_point (GtkText* text, gchar key)
1391 gtk_text_insert (text,
1392 MARK_CURRENT_FONT (&text->point),
1393 MARK_CURRENT_FORE (&text->point),
1394 MARK_CURRENT_BACK (&text->point),
1399 gtk_text_insert_text (GtkEditable *editable,
1400 const gchar *new_text,
1401 gint new_text_length,
1404 GtkText *text = GTK_TEXT (editable);
1406 gtk_text_set_point (text, *position);
1407 gtk_text_insert (text, NULL, NULL, NULL, new_text, new_text_length);
1409 *position = text->point.index;
1413 gtk_text_delete_text (GtkEditable *editable,
1417 GtkText *text = GTK_TEXT (editable);
1419 gtk_text_set_point (text, start_pos);
1421 end_pos = TEXT_LENGTH (text);
1423 gtk_text_forward_delete (text, end_pos - start_pos);
1427 gtk_text_key_press (GtkWidget *widget,
1431 GtkEditable *editable;
1435 g_return_val_if_fail (widget != NULL, FALSE);
1436 g_return_val_if_fail (GTK_IS_TEXT (widget), FALSE);
1437 g_return_val_if_fail (event != NULL, FALSE);
1441 text = GTK_TEXT (widget);
1442 editable = GTK_EDITABLE (widget);
1444 key = event->keyval;
1447 if (GTK_EDITABLE(text)->editable == FALSE)
1449 switch (event->keyval)
1451 case GDK_Home: scroll_int (text, -text->vadj->value); break;
1452 case GDK_End: scroll_int (text, +text->vadj->upper); break;
1453 case GDK_Page_Up: scroll_int (text, -text->vadj->page_increment); break;
1454 case GDK_Page_Down: scroll_int (text, +text->vadj->page_increment); break;
1455 case GDK_Up: scroll_int (text, -KEY_SCROLL_PIXELS); break;
1456 case GDK_Down: scroll_int (text, +KEY_SCROLL_PIXELS); break;
1464 gint extend_selection;
1467 text->point = find_mark (text, text->cursor_mark.index);
1469 extend_selection = event->state & GDK_SHIFT_MASK;
1470 extend_start = FALSE;
1472 if (extend_selection)
1474 if (editable->selection_start_pos == editable->selection_end_pos)
1476 editable->selection_start_pos = text->point.index;
1477 editable->selection_end_pos = text->point.index;
1480 extend_start = (text->point.index == editable->selection_start_pos);
1483 switch (event->keyval)
1485 case GDK_Home: move_cursor_buffer_ver (text, -1); break;
1486 case GDK_End: move_cursor_buffer_ver (text, +1); break;
1487 case GDK_Page_Up: move_cursor_page_ver (text, -1); break;
1488 case GDK_Page_Down: move_cursor_page_ver (text, +1); break;
1489 case GDK_Up: move_cursor_ver (text, -1); break;
1490 case GDK_Down: move_cursor_ver (text, +1); break;
1491 case GDK_Left: move_cursor_hor (text, -1); break;
1492 case GDK_Right: move_cursor_hor (text, +1); break;
1495 if (editable->selection_start_pos != editable->selection_end_pos)
1497 gtk_editable_delete_selection (editable);
1500 if (text->has_cursor && text->cursor_mark.index != 0)
1502 if (event->state & GDK_CONTROL_MASK)
1503 gtk_text_delete_backward_word (text);
1505 gtk_text_backward_delete (text, 1);
1509 if (editable->selection_start_pos != editable->selection_end_pos)
1511 gtk_editable_delete_selection (editable);
1514 if (text->has_cursor && !LAST_INDEX(text, text->cursor_mark))
1516 if (event->state & GDK_CONTROL_MASK)
1517 gtk_text_delete_forward_word (text);
1519 gtk_text_forward_delete (text, 1);
1523 if (!text->has_cursor)
1526 gtk_text_insert_1_at_point (text, '\t');
1529 if (!text->has_cursor)
1532 gtk_text_insert_1_at_point (text, '\n');
1535 /* Don't insert literally */
1542 if (!text->has_cursor)
1545 if (event->state & GDK_CONTROL_MASK)
1547 if ((key >= 'A') && (key <= 'Z'))
1550 if ((key >= 'a') && (key <= 'z') && control_keys[(int) (key - 'a')])
1552 (* control_keys[(int) (key - 'a')]) (editable, event->time);
1558 else if (event->state & GDK_MOD1_MASK)
1560 if ((key >= 'A') && (key <= 'Z'))
1563 if ((key >= 'a') && (key <= 'z') && alt_keys[(int) (key - 'a')])
1565 (* alt_keys[(int) (key - 'a')]) (editable, event->time);
1571 else if (event->length > 0)
1573 extend_selection = FALSE;
1575 if (event->length == 1)
1577 gtk_editable_delete_selection (editable);
1578 gtk_text_insert_1_at_point (text, event->string[0]);
1579 gtk_editable_changed (editable);
1590 if (extend_selection)
1592 if (editable->current_pos < editable->selection_start_pos)
1593 gtk_text_set_selection (editable, editable->current_pos,
1594 editable->selection_end_pos);
1595 else if (editable->current_pos > editable->selection_end_pos)
1596 gtk_text_set_selection (editable, editable->selection_start_pos,
1597 editable->current_pos);
1601 gtk_text_set_selection (editable, editable->current_pos,
1602 editable->selection_end_pos);
1604 gtk_text_set_selection (editable, editable->selection_start_pos,
1605 editable->current_pos);
1609 gtk_text_set_selection (editable, 0, 0);
1611 gtk_editable_claim_selection (editable,
1612 editable->selection_start_pos != editable->selection_end_pos,
1621 gtk_text_focus_in (GtkWidget *widget,
1622 GdkEventFocus *event)
1624 g_return_val_if_fail (widget != NULL, FALSE);
1625 g_return_val_if_fail (GTK_IS_TEXT (widget), FALSE);
1626 g_return_val_if_fail (event != NULL, FALSE);
1628 TDEBUG (("in gtk_text_focus_in\n"));
1630 GTK_WIDGET_SET_FLAGS (widget, GTK_HAS_FOCUS);
1631 gtk_widget_draw_focus (widget);
1634 if (GTK_EDITABLE(widget)->ic)
1635 gdk_im_begin (GTK_EDITABLE(widget)->ic, GTK_TEXT(widget)->text_area);
1638 draw_cursor (GTK_TEXT(widget), TRUE);
1644 gtk_text_focus_out (GtkWidget *widget,
1645 GdkEventFocus *event)
1647 g_return_val_if_fail (widget != NULL, FALSE);
1648 g_return_val_if_fail (GTK_IS_TEXT (widget), FALSE);
1649 g_return_val_if_fail (event != NULL, FALSE);
1651 TDEBUG (("in gtk_text_focus_out\n"));
1653 GTK_WIDGET_UNSET_FLAGS (widget, GTK_HAS_FOCUS);
1654 gtk_widget_draw_focus (widget);
1656 undraw_cursor (GTK_TEXT(widget), TRUE);
1666 gtk_text_adjustment (GtkAdjustment *adjustment,
1669 g_return_if_fail (adjustment != NULL);
1670 g_return_if_fail (GTK_IS_ADJUSTMENT (adjustment));
1671 g_return_if_fail (text != NULL);
1672 g_return_if_fail (GTK_IS_TEXT (text));
1674 if (adjustment == text->hadj)
1676 g_warning ("horizontal scrolling not implemented");
1680 gint diff = ((gint)adjustment->value) - text->last_ver_value;
1684 undraw_cursor (text, FALSE);
1687 scroll_down (text, diff);
1688 else /* if (diff < 0) */
1689 scroll_up (text, diff);
1691 draw_cursor (text, FALSE);
1693 text->last_ver_value = adjustment->value;
1699 gtk_text_disconnect (GtkAdjustment *adjustment,
1702 g_return_if_fail (adjustment != NULL);
1703 g_return_if_fail (GTK_IS_ADJUSTMENT (adjustment));
1704 g_return_if_fail (text != NULL);
1705 g_return_if_fail (GTK_IS_TEXT (text));
1707 if (adjustment == text->hadj)
1709 if (adjustment == text->vadj)
1714 static GtkPropertyMark
1715 find_this_line_start_mark (GtkText* text, guint point_position, const GtkPropertyMark* near)
1717 GtkPropertyMark mark;
1719 mark = find_mark_near (text, point_position, near);
1721 while (mark.index > 0 &&
1722 GTK_TEXT_INDEX (text, mark.index - 1) != LINE_DELIM)
1723 decrement_mark (&mark);
1729 init_tab_cont (GtkText* text, PrevTabCont* tab_cont)
1731 tab_cont->pixel_offset = 0;
1732 tab_cont->tab_start.tab_stops = text->tab_stops;
1733 tab_cont->tab_start.to_next_tab = (gulong) text->tab_stops->data;
1735 if (!tab_cont->tab_start.to_next_tab)
1736 tab_cont->tab_start.to_next_tab = text->default_tab_width;
1740 line_params_iterate (GtkText* text,
1741 const GtkPropertyMark* mark0,
1742 const PrevTabCont* tab_mark0,
1745 LineIteratorFunction iter)
1746 /* mark0 MUST be a real line start. if ALLOC, allocate line params
1747 * from a mem chunk. DATA is passed to ITER_CALL, which is called
1748 * for each line following MARK, iteration continues unless ITER_CALL
1751 GtkPropertyMark mark = *mark0;
1752 PrevTabCont tab_conts[2];
1753 LineParams *lp, lpbuf;
1754 gint tab_cont_index = 0;
1757 tab_conts[0] = *tab_mark0;
1759 init_tab_cont (text, tab_conts);
1764 lp = g_chunk_new (LineParams, params_mem_chunk);
1768 *lp = find_line_params (text, &mark, tab_conts + tab_cont_index,
1769 tab_conts + (tab_cont_index + 1) % 2);
1771 if ((*iter) (text, lp, data))
1774 if (LAST_INDEX (text, lp->end))
1778 advance_mark (&mark);
1779 tab_cont_index = (tab_cont_index + 1) % 2;
1784 fetch_lines_iterator (GtkText* text, LineParams* lp, void* data)
1786 FetchLinesData *fldata = (FetchLinesData*) data;
1788 fldata->new_lines = g_list_prepend (fldata->new_lines, lp);
1790 switch (fldata->fl_type)
1792 case FetchLinesCount:
1793 if (!text->line_wrap || !lp->wraps)
1796 if (fldata->data >= fldata->data_max)
1800 case FetchLinesPixels:
1802 fldata->data += LINE_HEIGHT(*lp);
1804 if (fldata->data >= fldata->data_max)
1814 fetch_lines (GtkText* text,
1815 const GtkPropertyMark* mark0,
1816 const PrevTabCont* tab_cont0,
1820 FetchLinesData fl_data;
1822 fl_data.new_lines = NULL;
1824 fl_data.data_max = data;
1825 fl_data.fl_type = fl_type;
1827 line_params_iterate (text, mark0, tab_cont0, TRUE, &fl_data, fetch_lines_iterator);
1829 return g_list_reverse (fl_data.new_lines);
1833 fetch_lines_backward (GtkText* text)
1835 GList* new_lines = NULL, *new_line_start;
1837 GtkPropertyMark mark = find_this_line_start_mark (text,
1838 CACHE_DATA(text->line_start_cache).start.index - 1,
1839 &CACHE_DATA(text->line_start_cache).start);
1841 new_line_start = new_lines = fetch_lines (text, &mark, NULL, FetchLinesCount, 1);
1843 while (new_line_start->next)
1844 new_line_start = new_line_start->next;
1846 new_line_start->next = text->line_start_cache;
1847 text->line_start_cache->prev = new_line_start;
1851 fetch_lines_forward (GtkText* text, gint line_count)
1853 GtkPropertyMark mark;
1854 GList* line = text->line_start_cache;
1859 mark = CACHE_DATA(line).end;
1861 if (LAST_INDEX (text, mark))
1864 advance_mark(&mark);
1866 line->next = fetch_lines (text, &mark, &CACHE_DATA(line).tab_cont_next, FetchLinesCount, line_count);
1869 line->next->prev = line;
1872 /* Compute the number of lines, and vertical pixels for n characters
1873 * starting from the point
1876 compute_lines_pixels (GtkText* text, gint char_count,
1877 guint *lines, guint *pixels)
1879 GList *line = text->current_line;
1884 /* If char_count == 0, that means we're joining two lines in a
1885 * deletion, so add in the values for the next line as well
1887 for (; line && char_count >= 0; line = line->next)
1889 *pixels += LINE_HEIGHT(CACHE_DATA(line));
1891 if (line == text->current_line)
1892 char_count -= CACHE_DATA(line).end.index - text->point.index + 1;
1894 char_count -= CACHE_DATA(line).end.index -CACHE_DATA(line).start.index + 1;
1896 if (!text->line_wrap || !CACHE_DATA(line).wraps)
1900 char_count = 0; /* force another loop */
1903 fetch_lines_forward (text, 1);
1908 total_line_height (GtkText* text, GList* line, gint line_count)
1912 for (; line && line_count > 0; line = line->next)
1914 height += LINE_HEIGHT(CACHE_DATA(line));
1916 if (!text->line_wrap || !CACHE_DATA(line).wraps)
1920 fetch_lines_forward (text, line_count);
1927 swap_lines (GtkText* text, GList* old, GList* new, gint old_line_count)
1929 if (old == text->line_start_cache)
1933 for (; old_line_count > 0; old_line_count -= 1)
1935 while (text->line_start_cache &&
1937 CACHE_DATA(text->line_start_cache).wraps)
1938 remove_cache_line(text, text->line_start_cache);
1940 remove_cache_line(text, text->line_start_cache);
1943 last = g_list_last (new);
1945 last->next = text->line_start_cache;
1947 if (text->line_start_cache)
1948 text->line_start_cache->prev = last;
1950 text->line_start_cache = new;
1956 g_assert (old->prev);
1960 for (; old_line_count > 0; old_line_count -= 1)
1962 while (old && text->line_wrap && CACHE_DATA(old).wraps)
1963 old = remove_cache_line (text, old);
1965 old = remove_cache_line (text, old);
1971 last = g_list_last (new);
1981 correct_cache_delete (GtkText* text, gint nchars, gint lines)
1983 GList* cache = text->current_line;
1986 for (i = 0; cache && i < lines; i += 1, cache = cache->next)
1989 for (; cache; cache = cache->next)
1991 GtkPropertyMark *start = &CACHE_DATA(cache).start;
1992 GtkPropertyMark *end = &CACHE_DATA(cache).end;
1994 start->index -= nchars;
1995 end->index -= nchars;
1997 if (start->property == text->point.property)
1998 start->offset = start->index - (text->point.index - text->point.offset);
2000 if (end->property == text->point.property)
2001 end->offset = end->index - (text->point.index - text->point.offset);
2003 /*TEXT_ASSERT_MARK(text, start, "start");*/
2004 /*TEXT_ASSERT_MARK(text, end, "end");*/
2009 delete_expose (GtkText* text, gint nchars, guint old_lines, guint old_pixels)
2012 guint new_pixels = 0;
2014 GList* new_line = NULL;
2017 text->cursor_virtual_x = 0;
2019 undraw_cursor (text, FALSE);
2021 correct_cache_delete (text, nchars, old_lines);
2023 pixel_height = pixel_height_of(text, text->current_line) -
2024 LINE_HEIGHT(CACHE_DATA(text->current_line));
2026 if (CACHE_DATA(text->current_line).start.index == text->point.index)
2027 CACHE_DATA(text->current_line).start = text->point;
2029 new_line = fetch_lines (text,
2030 &CACHE_DATA(text->current_line).start,
2031 &CACHE_DATA(text->current_line).tab_cont,
2035 swap_lines (text, text->current_line, new_line, old_lines);
2037 text->current_line = new_line;
2039 new_pixels = total_line_height (text, new_line, 1);
2041 gdk_window_get_size (text->text_area, &width, &height);
2043 if (old_pixels != new_pixels)
2045 gdk_draw_pixmap (text->text_area,
2049 pixel_height + old_pixels,
2051 pixel_height + new_pixels,
2055 text->vadj->upper += new_pixels;
2056 text->vadj->upper -= old_pixels;
2057 adjust_adj (text, text->vadj);
2061 rect.y = pixel_height;
2063 rect.height = new_pixels;
2065 expose_text (text, &rect, FALSE);
2066 gtk_text_draw_focus ( (GtkWidget *) text);
2068 text->cursor_mark = text->point;
2072 draw_cursor (text, FALSE);
2074 if (old_pixels != new_pixels)
2075 process_exposes (text);
2081 /* note, the point has already been moved forward */
2083 correct_cache_insert (GtkText* text, gint nchars)
2085 GList* cache = text->current_line->next;
2087 for (; cache; cache = cache->next)
2089 GtkPropertyMark *start = &CACHE_DATA(cache).start;
2090 GtkPropertyMark *end = &CACHE_DATA(cache).end;
2092 if (start->index >= text->point.index - nchars)
2094 if (start->property == text->point.property)
2095 move_mark_n(start, nchars);
2097 start->index += nchars;
2100 if (end->index >= text->point.index - nchars)
2102 if (end->property == text->point.property)
2103 move_mark_n(end, nchars);
2105 end->index += nchars;
2108 /*TEXT_ASSERT_MARK(text, start, "start");*/
2109 /*TEXT_ASSERT_MARK(text, end, "end");*/
2115 insert_expose (GtkText* text, guint old_pixels, gint nchars,
2116 guint new_line_count)
2119 guint new_pixels = 0;
2121 GList* new_lines = NULL;
2124 text->cursor_virtual_x = 0;
2126 undraw_cursor (text, FALSE);
2128 correct_cache_insert (text, nchars);
2130 TEXT_SHOW_ADJ (text, text->vadj, "vadj");
2132 pixel_height = pixel_height_of(text, text->current_line) -
2133 LINE_HEIGHT(CACHE_DATA(text->current_line));
2135 new_lines = fetch_lines (text,
2136 &CACHE_DATA(text->current_line).start,
2137 &CACHE_DATA(text->current_line).tab_cont,
2141 swap_lines (text, text->current_line, new_lines, 1);
2143 text->current_line = new_lines;
2145 new_pixels = total_line_height (text, new_lines, new_line_count);
2147 gdk_window_get_size (text->text_area, &width, &height);
2149 if (old_pixels != new_pixels)
2151 gdk_draw_pixmap (text->text_area,
2155 pixel_height + old_pixels,
2157 pixel_height + new_pixels,
2159 height + (old_pixels - new_pixels) - pixel_height);
2161 text->vadj->upper += new_pixels;
2162 text->vadj->upper -= old_pixels;
2163 adjust_adj (text, text->vadj);
2167 rect.y = pixel_height;
2169 rect.height = new_pixels;
2171 expose_text (text, &rect, FALSE);
2172 gtk_text_draw_focus ( (GtkWidget *) text);
2174 text->cursor_mark = text->point;
2178 draw_cursor (text, FALSE);
2180 if (old_pixels != new_pixels)
2181 process_exposes (text);
2183 TEXT_SHOW_ADJ (text, text->vadj, "vadj");
2189 font_hash (gpointer font)
2191 return gdk_font_id ((GdkFont*) font);
2195 get_text_font (GdkFont* gfont)
2197 static GHashTable *font_cache_table = NULL;
2202 if (!font_cache_table)
2203 font_cache_table = g_hash_table_new (font_hash, (GCompareFunc) gdk_font_equal);
2205 lu = g_hash_table_lookup (font_cache_table, gfont);
2208 return (TextFont*)lu;
2210 tf = g_new (TextFont, 1);
2212 tf->gdk_font = gfont;
2214 for(i = 0; i < 256; i += 1)
2215 tf->char_widths[i] = gdk_char_width (gfont, (char)i);
2217 g_hash_table_insert (font_cache_table, gfont, tf);
2223 text_properties_equal (TextProperty* prop, GdkFont* font, GdkColor *fore, GdkColor *back)
2225 return prop->font == get_text_font(font) &&
2226 gdk_color_equal(&prop->fore_color, fore) &&
2227 gdk_color_equal(&prop->back_color, back);
2230 static TextProperty*
2231 new_text_property (GdkFont* font, GdkColor* fore, GdkColor* back, guint length)
2235 if (text_property_chunk == NULL)
2237 text_property_chunk = g_mem_chunk_new ("text property mem chunk",
2238 sizeof(TextProperty),
2239 1024*sizeof(TextProperty),
2243 prop = g_chunk_new(TextProperty, text_property_chunk);
2245 prop->font = get_text_font (font);
2246 prop->fore_color = *fore;
2248 prop->back_color = *back;
2249 prop->length = length;
2254 /* Flop the memory between the point and the gap around like a
2257 move_gap_to_point (GtkText* text)
2259 if (text->gap_position < text->point.index)
2261 gint diff = text->point.index - text->gap_position;
2263 g_memmove (text->text + text->gap_position,
2264 text->text + text->gap_position + text->gap_size,
2267 text->gap_position = text->point.index;
2269 else if (text->gap_position > text->point.index)
2271 gint diff = text->gap_position - text->point.index;
2273 g_memmove (text->text + text->point.index + text->gap_size,
2274 text->text + text->point.index,
2277 text->gap_position = text->point.index;
2281 /* Increase the gap size. */
2283 make_forward_space (GtkText* text, guint len)
2285 if (text->gap_size < len)
2287 guint sum = MAX(2*len, MIN_GAP_SIZE) + text->text_end;
2289 if (sum >= text->text_len)
2293 while (i <= sum) i <<= 1;
2295 text->text = (guchar*)g_realloc(text->text, i);
2298 g_memmove (text->text + text->gap_position + text->gap_size + 2*len,
2299 text->text + text->gap_position + text->gap_size,
2300 text->text_end - (text->gap_position + text->gap_size));
2302 text->text_end += len*2;
2303 text->gap_size += len*2;
2307 /* Inserts into the text property list a list element that guarantees
2308 * that for len characters following the point, text has the correct
2309 * property. does not move point. adjusts text_properties_point and
2310 * text_properties_point_offset relative to the current value of
2313 insert_text_property (GtkText* text, GdkFont* font,
2314 GdkColor *fore, GdkColor* back, guint len)
2316 GtkPropertyMark *mark = &text->point;
2317 TextProperty* forward_prop = MARK_CURRENT_PROPERTY(mark);
2318 TextProperty* backward_prop = MARK_PREV_PROPERTY(mark);
2320 if (MARK_OFFSET(mark) == 0)
2322 /* Point is on the boundary of two properties.
2323 * If it is the same as either, grow, else insert
2326 if (text_properties_equal(forward_prop, font, fore, back))
2328 /* Grow the property in front of us. */
2330 MARK_PROPERTY_LENGTH(mark) += len;
2332 else if (backward_prop &&
2333 text_properties_equal(backward_prop, font, fore, back))
2335 /* Grow property behind us, point property and offset
2338 SET_PROPERTY_MARK (&text->point,
2339 MARK_PREV_LIST_PTR (mark),
2340 backward_prop->length);
2342 backward_prop->length += len;
2346 /* Splice a new property into the list. */
2348 GList* new_prop = g_list_alloc();
2350 new_prop->next = MARK_LIST_PTR(mark);
2351 new_prop->prev = MARK_PREV_LIST_PTR(mark);
2352 new_prop->next->prev = new_prop;
2355 new_prop->prev->next = new_prop;
2357 new_prop->data = new_text_property (font, fore, back, len);
2359 SET_PROPERTY_MARK (mark, new_prop, 0);
2364 /* In the middle of forward_prop, if properties are equal,
2365 * just add to its length, else split it into two and splice
2367 if (text_properties_equal (forward_prop, font, fore, back))
2369 forward_prop->length += len;
2373 GList* new_prop = g_list_alloc();
2374 GList* new_prop_forward = g_list_alloc();
2375 gint old_length = forward_prop->length;
2376 GList* next = MARK_NEXT_LIST_PTR(mark);
2378 /* Set the new lengths according to where they are split. Construct
2379 * two new properties. */
2380 forward_prop->length = MARK_OFFSET(mark);
2382 new_prop_forward->data = new_text_property(forward_prop->font->gdk_font,
2385 old_length - forward_prop->length);
2387 new_prop->data = new_text_property(font, fore, back, len);
2389 /* Now splice things in. */
2390 MARK_NEXT_LIST_PTR(mark) = new_prop;
2391 new_prop->prev = MARK_LIST_PTR(mark);
2393 new_prop->next = new_prop_forward;
2394 new_prop_forward->prev = new_prop;
2396 new_prop_forward->next = next;
2399 next->prev = new_prop_forward;
2401 SET_PROPERTY_MARK (mark, new_prop, 0);
2405 while (text->text_properties_end->next)
2406 text->text_properties_end = text->text_properties_end->next;
2408 while (text->text_properties->prev)
2409 text->text_properties = text->text_properties->prev;
2413 delete_text_property (GtkText* text, guint nchars)
2415 /* Delete nchars forward from point. */
2420 for(; nchars; nchars -= 1)
2422 prop = MARK_CURRENT_PROPERTY(&text->point);
2426 if (prop->length == 0)
2428 tmp = MARK_LIST_PTR (&text->point);
2430 is_first = tmp == text->text_properties;
2432 MARK_LIST_PTR (&text->point) = g_list_remove_link (tmp, tmp);
2433 text->point.offset = 0;
2435 g_mem_chunk_free (text_property_chunk, prop);
2437 prop = MARK_CURRENT_PROPERTY (&text->point);
2440 text->text_properties = MARK_LIST_PTR (&text->point);
2442 g_assert (prop->length != 0);
2444 else if (prop->length == text->point.offset)
2446 MARK_LIST_PTR (&text->point) = MARK_NEXT_LIST_PTR (&text->point);
2447 text->point.offset = 0;
2453 init_properties (GtkText *text)
2455 GtkWidget *widget = (GtkWidget *)text;
2457 if (!text->text_properties)
2459 text->text_properties = g_list_alloc();
2460 text->text_properties->next = NULL;
2461 text->text_properties->prev = NULL;
2462 text->text_properties->data = new_text_property (widget->style->font,
2463 &widget->style->text[GTK_STATE_NORMAL],
2464 &widget->style->base[GTK_STATE_NORMAL],
2466 text->text_properties_end = text->text_properties;
2468 SET_PROPERTY_MARK (&text->point, text->text_properties, 0);
2470 text->point.index = 0;
2475 /**********************************************************************/
2476 /* Property Movement */
2477 /**********************************************************************/
2480 move_mark_n (GtkPropertyMark* mark, gint n)
2483 advance_mark_n(mark, n);
2485 decrement_mark_n(mark, -n);
2489 advance_mark_n (GtkPropertyMark* mark, gint n)
2495 for (i = 0; i < n; i += 1)
2496 advance_mark (mark);
2500 advance_mark (GtkPropertyMark* mark)
2502 TextProperty* prop = MARK_CURRENT_PROPERTY (mark);
2506 if (prop->length > mark->offset + 1)
2510 mark->property = MARK_NEXT_LIST_PTR (mark);
2516 decrement_mark (GtkPropertyMark* mark)
2520 if (mark->offset > 0)
2524 mark->property = MARK_PREV_LIST_PTR (mark);
2525 mark->offset = MARK_CURRENT_PROPERTY (mark)->length - 1;
2530 decrement_mark_n (GtkPropertyMark* mark, gint n)
2536 for (i = 0; i < n; i += 1)
2537 decrement_mark (mark);
2540 static GtkPropertyMark
2541 find_mark (GtkText* text, guint mark_position)
2543 return find_mark_near (text, mark_position, &text->point);
2546 /* This can be optimized in two ways.
2547 * First, advances can be made in units of the current TextProperty
2548 * length, when possible. This will reduce computation and function
2551 * You can also start from the end, what a drag.
2553 static GtkPropertyMark
2554 find_mark_near (GtkText* text, guint mark_position, const GtkPropertyMark* near)
2559 GtkPropertyMark mark;
2562 diffa = mark_position + 1;
2564 diffa = mark_position - near->index;
2566 diffb = mark_position;
2578 mark.property = text->text_properties;
2582 if (mark.index > mark_position)
2584 while (mark.index > mark_position)
2585 decrement_mark (&mark);
2589 while (mark_position > mark.index)
2590 advance_mark (&mark);
2597 find_line_containing_point (GtkText* text, guint point)
2602 text->current_line = NULL;
2604 if (!text->line_start_cache->next)
2606 /* @@@ Its visible, right? */
2607 text->current_line = text->line_start_cache;
2611 while ( ( (text->first_cut_pixels != 0) &&
2612 (CACHE_DATA(text->line_start_cache->next).start.index > point) ) ||
2613 ( (text->first_cut_pixels == 0) &&
2614 (CACHE_DATA(text->line_start_cache).start.index > point) ) )
2616 scroll_int (text, - SCROLL_PIXELS);
2617 g_assert (text->line_start_cache->next);
2621 gdk_window_get_size (text->text_area, NULL, &height);
2623 for (cache = text->line_start_cache; cache; cache = cache->next)
2627 if (CACHE_DATA(cache).end.index >= point ||
2628 LAST_INDEX(text, CACHE_DATA(cache).end))
2630 text->current_line = cache; /* LOOK HERE, this proc has an
2631 * important side effect. */
2635 TEXT_SHOW_LINE (text, cache, "cache");
2637 lph = pixel_height_of (text, cache->next);
2639 while (lph > height || lph == 0)
2641 TEXT_SHOW_LINE (text, cache, "cache");
2642 TEXT_SHOW_LINE (text, cache->next, "cache->next");
2643 scroll_int (text, LINE_HEIGHT(CACHE_DATA(cache->next)));
2644 lph = pixel_height_of (text, cache->next);
2648 g_assert_not_reached (); /* Must set text->current_line here */
2652 pixel_height_of (GtkText* text, GList* cache_line)
2654 gint pixels = - text->first_cut_pixels;
2655 GList *cache = text->line_start_cache;
2658 pixels += LINE_HEIGHT (CACHE_DATA(cache));
2660 if (cache->data == cache_line->data)
2663 cache = cache->next;
2669 /**********************************************************************/
2670 /* Search and Placement */
2671 /**********************************************************************/
2674 find_char_width (GtkText* text, const GtkPropertyMark *mark, const TabStopMark *tab_mark)
2676 gchar ch = GTK_TEXT_INDEX (text, mark->index);
2677 gint16* char_widths = MARK_CURRENT_TEXT_FONT (mark)->char_widths;
2681 return tab_mark->to_next_tab * char_widths[' '];
2685 return char_widths[ch & 0xff];
2690 advance_tab_mark (GtkText* text, TabStopMark* tab_mark, gchar ch)
2692 if (tab_mark->to_next_tab == 1 || ch == '\t')
2694 if (tab_mark->tab_stops->next)
2696 tab_mark->tab_stops = tab_mark->tab_stops->next;
2697 tab_mark->to_next_tab = (gulong) tab_mark->tab_stops->data;
2701 tab_mark->to_next_tab = text->default_tab_width;
2706 tab_mark->to_next_tab -= 1;
2711 advance_tab_mark_n (GtkText* text, TabStopMark* tab_mark, gint n)
2715 advance_tab_mark (text, tab_mark, 0);
2719 find_cursor_at_line (GtkText* text, const LineParams* start_line, gint pixel_height)
2722 GtkEditable *editable = (GtkEditable *)text;
2724 GtkPropertyMark mark = start_line->start;
2725 TabStopMark tab_mark = start_line->tab_cont.tab_start;
2726 gint pixel_width = LINE_START_PIXEL (*start_line);
2728 while (mark.index < text->cursor_mark.index)
2730 pixel_width += find_char_width (text, &mark, &tab_mark);
2732 advance_tab_mark (text, &tab_mark, GTK_TEXT_INDEX(text, mark.index));
2733 advance_mark (&mark);
2736 text->cursor_pos_x = pixel_width;
2737 text->cursor_pos_y = pixel_height;
2738 text->cursor_char_offset = start_line->font_descent;
2739 text->cursor_mark = mark;
2741 ch = GTK_TEXT_INDEX (text, mark.index);
2744 text->cursor_char = ch;
2746 text->cursor_char = 0;
2749 if (gdk_im_ready() && editable->ic &&
2750 gdk_ic_get_style (editable->ic) & GdkIMPreeditPosition)
2754 spot.x = text->cursor_pos_x;
2755 spot.y = text->cursor_pos_y - text->cursor_char_offset;
2756 if (MARK_CURRENT_FONT (&mark)->type == GDK_FONT_FONTSET)
2757 gdk_ic_set_attr (editable->ic, "preeditAttributes",
2758 "fontSet", GDK_FONT_XFONT (MARK_CURRENT_FONT (&mark)),
2761 gdk_ic_set_attr (editable->ic, "preeditAttributes",
2762 "spotLocation", &spot,
2763 "lineSpace", LINE_HEIGHT (*start_line),
2764 "foreground", MARK_CURRENT_FORE (&mark)->pixel,
2765 "background", MARK_CURRENT_BACK (&mark)->pixel,
2772 find_cursor (GtkText* text)
2774 if (!text->has_cursor)
2777 find_line_containing_point (text, text->cursor_mark.index);
2779 g_assert (text->cursor_mark.index >= text->first_line_start_index);
2781 if (text->current_line)
2782 find_cursor_at_line (text,
2783 &CACHE_DATA(text->current_line),
2784 pixel_height_of(text, text->current_line));
2786 GTK_EDITABLE (text)->current_pos = text->cursor_mark.index;
2790 find_mouse_cursor_at_line (GtkText *text, const LineParams* lp,
2791 guint line_pixel_height,
2794 GtkPropertyMark mark = lp->start;
2795 TabStopMark tab_mark = lp->tab_cont.tab_start;
2797 guint char_width = find_char_width(text, &mark, &tab_mark);
2798 guint pixel_width = LINE_START_PIXEL (*lp) + (char_width+1)/2;
2800 text->cursor_pos_y = line_pixel_height;
2804 gchar ch = GTK_TEXT_INDEX (text, mark.index);
2806 if (button_x < pixel_width || mark.index == lp->end.index)
2808 text->cursor_pos_x = pixel_width - (char_width+1)/2;
2809 text->cursor_mark = mark;
2810 text->cursor_char_offset = lp->font_descent;
2813 text->cursor_char = ch;
2815 text->cursor_char = 0;
2820 advance_tab_mark (text, &tab_mark, ch);
2821 advance_mark (&mark);
2823 pixel_width += char_width/2;
2825 char_width = find_char_width (text, &mark, &tab_mark);
2827 pixel_width += (char_width+1)/2;
2832 find_mouse_cursor (GtkText* text, gint x, gint y)
2834 if (GTK_EDITABLE(text)->editable)
2837 GList* cache = text->line_start_cache;
2841 pixel_height = - text->first_cut_pixels;
2843 text->has_cursor = 1;
2845 for (; cache; cache = cache->next)
2847 pixel_height += LINE_HEIGHT(CACHE_DATA(cache));
2849 if (y < pixel_height || !cache->next)
2851 find_mouse_cursor_at_line (text, &CACHE_DATA(cache), pixel_height, x);
2861 /**********************************************************************/
2863 /**********************************************************************/
2866 free_cache (GtkText* text)
2868 GList* cache = text->line_start_cache;
2870 for (; cache; cache = cache->next)
2871 g_mem_chunk_free (params_mem_chunk, cache->data);
2873 g_list_free (text->line_start_cache);
2875 text->line_start_cache = NULL;
2879 remove_cache_line (GtkText* text, GList* member)
2881 if (member == text->line_start_cache)
2883 if (text->line_start_cache)
2884 text->line_start_cache = text->line_start_cache->next;
2885 return text->line_start_cache;
2889 GList *list = member->prev;
2891 list->next = list->next->next;
2893 list->next->prev = list;
2895 member->next = NULL;
2896 g_mem_chunk_free (params_mem_chunk, member->data);
2897 g_list_free (member);
2903 /**********************************************************************/
2905 /**********************************************************************/
2908 move_cursor_buffer_ver (GtkText *text, int dir)
2911 scroll_int (text, text->vadj->upper);
2913 scroll_int (text, - text->vadj->value);
2917 move_cursor_page_ver (GtkText *text, int dir)
2919 scroll_int (text, dir * text->vadj->page_increment);
2923 move_cursor_ver (GtkText *text, int count)
2926 GtkPropertyMark mark;
2929 if (!text->has_cursor)
2931 scroll_int (text, count * KEY_SCROLL_PIXELS);
2935 mark = find_this_line_start_mark (text, text->cursor_mark.index, &text->cursor_mark);
2936 offset = text->cursor_mark.index - mark.index;
2938 if (offset > text->cursor_virtual_x)
2939 text->cursor_virtual_x = offset;
2943 if (mark.index == 0)
2946 decrement_mark (&mark);
2947 mark = find_this_line_start_mark (text, mark.index, &mark);
2951 mark = text->cursor_mark;
2953 while (!LAST_INDEX(text, mark) && GTK_TEXT_INDEX(text, mark.index) != LINE_DELIM)
2954 advance_mark (&mark);
2956 if (LAST_INDEX(text, mark))
2959 advance_mark (&mark);
2962 for (i=0; i < text->cursor_virtual_x; i += 1, advance_mark(&mark))
2963 if (LAST_INDEX(text, mark) || GTK_TEXT_INDEX(text, mark.index) == LINE_DELIM)
2966 undraw_cursor (text, FALSE);
2968 text->cursor_mark = mark;
2972 draw_cursor (text, FALSE);
2976 move_cursor_hor (GtkText *text, int count)
2978 /* count should be +-1. */
2979 if (!text->has_cursor)
2982 if ( (count > 0 && text->cursor_mark.index + count > TEXT_LENGTH(text)) ||
2983 (count < 0 && text->cursor_mark.index < (- count)) ||
2987 text->cursor_virtual_x = 0;
2989 undraw_cursor (text, FALSE);
2991 move_mark_n (&text->cursor_mark, count);
2995 draw_cursor (text, FALSE);
2999 gtk_text_move_forward_character (GtkText *text)
3001 move_cursor_hor (text, 1);
3005 gtk_text_move_backward_character (GtkText *text)
3007 move_cursor_hor (text, -1);
3011 gtk_text_move_forward_word (GtkText *text)
3013 undraw_cursor (text, FALSE);
3015 while (!LAST_INDEX (text, text->cursor_mark) &&
3016 !isalnum (GTK_TEXT_INDEX(text, text->cursor_mark.index)))
3017 advance_mark (&text->cursor_mark);
3019 while (!LAST_INDEX (text, text->cursor_mark) &&
3020 isalnum (GTK_TEXT_INDEX(text, text->cursor_mark.index)))
3021 advance_mark (&text->cursor_mark);
3024 draw_cursor (text, FALSE);
3028 gtk_text_move_backward_word (GtkText *text)
3030 undraw_cursor (text, FALSE);
3032 while ((text->cursor_mark.index > 0) &&
3033 !isalnum (GTK_TEXT_INDEX(text, text->cursor_mark.index-1)))
3034 decrement_mark (&text->cursor_mark);
3036 while ((text->cursor_mark.index > 0) &&
3037 isalnum (GTK_TEXT_INDEX(text, text->cursor_mark.index-1)))
3038 decrement_mark (&text->cursor_mark);
3041 draw_cursor (text, FALSE);
3045 gtk_text_move_beginning_of_line (GtkText *text)
3047 undraw_cursor (text, FALSE);
3048 text->cursor_mark = CACHE_DATA(text->current_line).start;
3050 draw_cursor (text, FALSE);
3054 gtk_text_move_end_of_line (GtkText *text)
3056 undraw_cursor (text, FALSE);
3057 text->cursor_mark = CACHE_DATA(text->current_line).end;
3059 draw_cursor (text, FALSE);
3063 gtk_text_delete_forward_character (GtkText *text)
3065 GtkEditable *editable;
3066 editable = GTK_EDITABLE (text);
3068 if (editable->selection_start_pos != editable->selection_end_pos)
3069 gtk_editable_delete_selection (editable);
3072 gtk_text_forward_delete (text, 1);
3073 gtk_editable_changed (editable);
3078 gtk_text_delete_backward_character (GtkText *text)
3080 GtkEditable *editable;
3081 editable = GTK_EDITABLE (text);
3083 if (editable->selection_start_pos != editable->selection_end_pos)
3084 gtk_editable_delete_selection (editable);
3087 gtk_text_backward_delete (text, 1);
3088 gtk_editable_changed (editable);
3093 gtk_text_delete_forward_word (GtkText *text)
3097 GtkEditable *editable;
3098 editable = GTK_EDITABLE (text);
3100 if (editable->selection_start_pos != editable->selection_end_pos)
3101 gtk_editable_delete_selection (editable);
3104 old_pos = text->cursor_mark.index;
3105 gtk_text_move_forward_word (text);
3106 gtk_text_backward_delete (text, old_pos - text->cursor_mark.index);
3107 gtk_editable_changed (editable);
3112 gtk_text_delete_backward_word (GtkText *text)
3116 GtkEditable *editable;
3117 editable = GTK_EDITABLE (text);
3119 if (editable->selection_start_pos != editable->selection_end_pos)
3120 gtk_editable_delete_selection (editable);
3123 old_pos = text->point.index;
3124 gtk_text_move_backward_word (text);
3125 gtk_text_forward_delete (text, text->point.index - old_pos);
3126 gtk_editable_changed (editable);
3131 gtk_text_delete_line (GtkText *text)
3133 gtk_text_set_point (text, CACHE_DATA(text->current_line).start.index);
3134 gtk_text_forward_delete (text,
3135 CACHE_DATA(text->current_line).end.index -
3136 CACHE_DATA(text->current_line).start.index + 1);
3138 gtk_editable_changed (GTK_EDITABLE (text));
3142 gtk_text_delete_to_line_end (GtkText *text)
3144 gtk_text_forward_delete (text,
3145 MAX(CACHE_DATA(text->current_line).end.index -
3146 text->point.index, 1));
3148 gtk_editable_changed (GTK_EDITABLE (text));
3152 gtk_text_select_word (GtkText *text)
3157 GtkEditable *editable;
3158 editable = GTK_EDITABLE (text);
3160 gtk_text_move_backward_word (text);
3161 start_pos = text->cursor_mark.index;
3163 gtk_text_move_forward_word (text);
3164 end_pos = text->cursor_mark.index;
3166 gtk_text_set_selection (editable, start_pos, end_pos);
3170 gtk_text_select_line (GtkText *text)
3172 gtk_text_set_selection (GTK_EDITABLE (text),
3173 CACHE_DATA(text->current_line).end.index,
3174 CACHE_DATA(text->current_line).start.index);
3177 /**********************************************************************/
3179 /**********************************************************************/
3182 adjust_adj (GtkText* text, GtkAdjustment* adj)
3186 gdk_window_get_size (text->text_area, NULL, &height);
3188 adj->step_increment = MIN (adj->upper, (float) SCROLL_PIXELS);
3189 adj->page_increment = MIN (adj->upper, height - (float) KEY_SCROLL_PIXELS);
3190 adj->page_size = MIN (adj->upper, height);
3191 adj->value = MIN (adj->value, adj->upper - adj->page_size);
3192 adj->value = MAX (adj->value, 0.0);
3194 gtk_signal_emit_by_name (GTK_OBJECT (adj), "changed");
3198 set_vertical_scroll_iterator (GtkText* text, LineParams* lp, void* data)
3200 gint *pixel_count = (gint*) data;
3202 if (text->first_line_start_index == lp->start.index)
3203 text->vadj->value = (float) *pixel_count;
3205 *pixel_count += LINE_HEIGHT (*lp);
3211 set_vertical_scroll_find_iterator (GtkText* text, LineParams* lp, void* data)
3213 SetVerticalScrollData *svdata = (SetVerticalScrollData *) data;
3216 if (svdata->last_didnt_wrap)
3217 svdata->last_line_start = lp->start.index;
3219 if (svdata->pixel_height <= (gint) text->vadj->value &&
3220 svdata->pixel_height + LINE_HEIGHT(*lp) > (gint) text->vadj->value)
3222 svdata->mark = lp->start;
3224 text->first_cut_pixels = (gint)text->vadj->value - svdata->pixel_height;
3225 text->first_onscreen_ver_pixel = svdata->pixel_height;
3226 text->first_line_start_index = svdata->last_line_start;
3232 svdata->pixel_height += LINE_HEIGHT (*lp);
3238 svdata->last_didnt_wrap = TRUE;
3240 svdata->last_didnt_wrap = FALSE;
3245 static GtkPropertyMark
3246 set_vertical_scroll (GtkText* text)
3248 GtkPropertyMark mark = find_mark (text, 0);
3249 SetVerticalScrollData data;
3251 gint pixel_count = 0;
3254 line_params_iterate (text, &mark, NULL, FALSE, &pixel_count, set_vertical_scroll_iterator);
3256 text->vadj->upper = (float) pixel_count;
3257 orig_value = (gint) text->vadj->value;
3259 gdk_window_get_size (text->text_area, NULL, &height);
3261 text->vadj->step_increment = MIN (text->vadj->upper, (float) SCROLL_PIXELS);
3262 text->vadj->page_increment = MIN (text->vadj->upper, height - (float) KEY_SCROLL_PIXELS);
3263 text->vadj->page_size = MIN (text->vadj->upper, height);
3264 text->vadj->value = MIN (text->vadj->value, text->vadj->upper - text->vadj->page_size);
3265 text->vadj->value = MAX (text->vadj->value, 0.0);
3267 text->last_ver_value = (gint)text->vadj->value;
3268 text->first_cut_pixels = 0;
3270 gtk_signal_emit_by_name (GTK_OBJECT (text->vadj), "changed");
3272 if (text->vadj->value != orig_value)
3274 /* We got clipped, and don't really know which line to put first. */
3275 data.pixel_height = 0;
3276 data.last_didnt_wrap = TRUE;
3278 line_params_iterate (text, &mark, NULL,
3280 set_vertical_scroll_find_iterator);
3286 return find_mark (text, text->first_line_start_index);
3291 scroll_int (GtkText* text, gint diff)
3295 text->vadj->value += diff;
3297 upper = text->vadj->upper - text->vadj->page_size;
3298 text->vadj->value = MIN (text->vadj->value, upper);
3299 text->vadj->value = MAX (text->vadj->value, 0.0);
3301 gtk_signal_emit_by_name (GTK_OBJECT (text->vadj), "value_changed");
3305 process_exposes (GtkText *text)
3309 /* Make sure graphics expose events are processed before scrolling
3312 while ((event = gdk_event_get_graphics_expose (text->text_area)) != NULL)
3314 gtk_widget_event (GTK_WIDGET (text), event);
3315 if (event->expose.count == 0)
3317 gdk_event_free (event);
3320 gdk_event_free (event);
3324 static gint last_visible_line_height (GtkText* text)
3326 GList *cache = text->line_start_cache;
3329 gdk_window_get_size (text->text_area, NULL, &height);
3331 for (; cache->next; cache = cache->next)
3332 if (pixel_height_of(text, cache->next) > height)
3336 return pixel_height_of(text, cache) - 1;
3341 static gint first_visible_line_height (GtkText* text)
3343 if (text->first_cut_pixels)
3344 return pixel_height_of(text, text->line_start_cache) + 1;
3350 scroll_down (GtkText* text, gint diff0)
3356 text->first_onscreen_ver_pixel += diff0;
3360 g_assert (text->line_start_cache &&
3361 text->line_start_cache->next);
3363 if (text->first_cut_pixels < LINE_HEIGHT(CACHE_DATA(text->line_start_cache)) - 1)
3365 text->first_cut_pixels += 1;
3369 text->first_cut_pixels = 0;
3371 text->line_start_cache = text->line_start_cache->next;
3373 text->first_line_start_index =
3374 CACHE_DATA(text->line_start_cache).start.index;
3376 if (!text->line_start_cache->next)
3377 fetch_lines_forward (text, 1);
3383 gdk_window_get_size (text->text_area, &width, &height);
3384 if (height > real_diff)
3385 gdk_draw_pixmap (text->text_area,
3393 height - real_diff);
3396 rect.y = MAX (0, height - real_diff);
3398 rect.height = MIN (height, real_diff);
3400 expose_text (text, &rect, FALSE);
3401 gtk_text_draw_focus ( (GtkWidget *) text);
3403 if (text->current_line)
3407 text->cursor_pos_y -= real_diff;
3408 cursor_min = drawn_cursor_min(text);
3411 find_mouse_cursor (text, text->cursor_pos_x,
3412 first_visible_line_height (text));
3415 if (height > real_diff)
3416 process_exposes (text);
3420 scroll_up (GtkText* text, gint diff0)
3426 text->first_onscreen_ver_pixel += diff0;
3430 g_assert (text->line_start_cache);
3432 if (text->first_cut_pixels > 0)
3434 text->first_cut_pixels -= 1;
3438 if (!text->line_start_cache->prev)
3439 fetch_lines_backward (text);
3441 text->line_start_cache = text->line_start_cache->prev;
3443 text->first_line_start_index =
3444 CACHE_DATA(text->line_start_cache).start.index;
3446 text->first_cut_pixels = LINE_HEIGHT(CACHE_DATA(text->line_start_cache)) - 1;
3452 gdk_window_get_size (text->text_area, &width, &height);
3453 if (height > real_diff)
3454 gdk_draw_pixmap (text->text_area,
3462 height - real_diff);
3467 rect.height = MIN (height, real_diff);
3469 expose_text (text, &rect, FALSE);
3470 gtk_text_draw_focus ( (GtkWidget *) text);
3472 if (text->current_line)
3477 text->cursor_pos_y += real_diff;
3478 cursor_max = drawn_cursor_max(text);
3479 gdk_window_get_size (text->text_area, NULL, &height);
3481 if (cursor_max >= height)
3482 find_mouse_cursor (text, text->cursor_pos_x,
3483 last_visible_line_height (text));
3486 if (height > real_diff)
3487 process_exposes (text);
3490 /**********************************************************************/
3492 /**********************************************************************/
3494 /* Assumes mark starts a line. Calculates the height, width, and
3495 * displayable character count of a single DISPLAYABLE line. That
3496 * means that in line-wrap mode, this does may not compute the
3497 * properties of an entire line. */
3499 find_line_params (GtkText* text,
3500 const GtkPropertyMark* mark,
3501 const PrevTabCont *tab_cont,
3502 PrevTabCont *next_cont)
3505 TabStopMark tab_mark = tab_cont->tab_start;
3506 guint max_display_pixels;
3511 gdk_window_get_size (text->text_area, (gint*) &max_display_pixels, NULL);
3512 max_display_pixels -= LINE_WRAP_ROOM;
3515 lp.tab_cont = *tab_cont;
3518 lp.pixel_width = tab_cont->pixel_offset;
3519 lp.displayable_chars = 0;
3521 lp.font_descent = 0;
3523 init_tab_cont (text, next_cont);
3525 while (!LAST_INDEX(text, lp.end))
3527 g_assert (lp.end.property);
3529 ch = GTK_TEXT_INDEX (text, lp.end.index);
3530 font = MARK_CURRENT_FONT (&lp.end);
3532 if (ch == LINE_DELIM)
3534 /* Newline doesn't count in computation of line height, even
3535 * if its in a bigger font than the rest of the line. Unless,
3536 * of course, there are no other characters. */
3538 if (!lp.font_ascent && !lp.font_descent)
3540 lp.font_ascent = font->ascent;
3541 lp.font_descent = font->descent;
3544 lp.tab_cont_next = *next_cont;
3549 ch_width = find_char_width (text, &lp.end, &tab_mark);
3551 if (ch_width + lp.pixel_width > max_display_pixels)
3555 if (text->line_wrap)
3557 next_cont->tab_start = tab_mark;
3558 next_cont->pixel_offset = 0;
3562 /* Here's the tough case, a tab is wrapping. */
3563 gint pixels_avail = max_display_pixels - lp.pixel_width;
3564 gint space_width = MARK_CURRENT_TEXT_FONT(&lp.end)->char_widths[' '];
3565 gint spaces_avail = pixels_avail / space_width;
3567 if (spaces_avail == 0)
3569 decrement_mark (&lp.end);
3573 advance_tab_mark (text, &next_cont->tab_start, '\t');
3574 next_cont->pixel_offset = space_width * (tab_mark.to_next_tab -
3576 lp.displayable_chars += 1;
3581 /* Don't include this character, it will wrap. */
3582 decrement_mark (&lp.end);
3585 lp.tab_cont_next = *next_cont;
3592 lp.displayable_chars += 1;
3595 lp.font_ascent = MAX (font->ascent, lp.font_ascent);
3596 lp.font_descent = MAX (font->descent, lp.font_descent);
3597 lp.pixel_width += ch_width;
3599 advance_mark(&lp.end);
3600 advance_tab_mark (text, &tab_mark, ch);
3603 if (LAST_INDEX(text, lp.start))
3605 /* Special case, empty last line. */
3606 font = MARK_CURRENT_FONT (&lp.end);
3608 lp.font_ascent = font->ascent;
3609 lp.font_descent = font->descent;
3612 lp.tab_cont_next = *next_cont;
3618 expand_scratch_buffer (GtkText* text, guint len)
3620 if (len >= text->scratch_buffer_len)
3624 while (i <= len && i < MIN_GAP_SIZE) i <<= 1;
3626 if (text->scratch_buffer)
3627 text->scratch_buffer = g_new (guchar, i);
3629 text->scratch_buffer = g_realloc (text->scratch_buffer, i);
3631 text->scratch_buffer_len = i;
3635 /* Returns a GC to draw a background for the text at a mark,
3636 * or NULL, if the mark's background is NULL
3638 * Side effect: modifies text->gc
3641 mark_bg_gc (GtkText* text, const GtkPropertyMark *mark)
3643 GtkEditable *editable = GTK_EDITABLE(text);
3645 if ((mark->index >= MIN(editable->selection_start_pos, editable->selection_end_pos) &&
3646 mark->index < MAX(editable->selection_start_pos, editable->selection_end_pos)))
3648 if (editable->has_selection)
3649 return GTK_WIDGET(text)->style->bg_gc[GTK_STATE_SELECTED];
3651 return GTK_WIDGET(text)->style->bg_gc[GTK_STATE_ACTIVE];
3653 else if (MARK_CURRENT_BACK (mark))
3655 gdk_gc_set_foreground (text->gc, MARK_CURRENT_BACK (mark));
3662 draw_line (GtkText* text,
3663 gint pixel_start_height,
3666 GdkGCValues gc_values;
3669 guint running_offset = lp->tab_cont.pixel_offset;
3671 GdkGC *fg_gc, *bg_gc;
3673 GtkEditable *editable = GTK_EDITABLE(text);
3675 guint selection_start_pos = MIN (editable->selection_start_pos, editable->selection_end_pos);
3676 guint selection_end_pos = MAX (editable->selection_start_pos, editable->selection_end_pos);
3678 GtkPropertyMark mark = lp->start;
3679 TabStopMark tab_mark = lp->tab_cont.tab_start;
3680 gint pixel_height = pixel_start_height + lp->font_ascent;
3681 guint chars = lp->displayable_chars;
3683 /* First provide a contiguous segment of memory. This makes reading
3684 * the code below *much* easier, and only incurs the cost of copying
3685 * when the line being displayed spans the gap. */
3686 if (mark.index <= text->gap_position &&
3687 mark.index + chars > text->gap_position)
3689 expand_scratch_buffer (text, chars);
3691 for (i = 0; i < chars; i += 1)
3692 text->scratch_buffer[i] = GTK_TEXT_INDEX(text, mark.index + i);
3694 buffer = text->scratch_buffer;
3698 if (mark.index >= text->gap_position)
3699 buffer = text->text + mark.index + text->gap_size;
3701 buffer = text->text + mark.index;
3705 if (running_offset > 0)
3707 bg_gc = mark_bg_gc (text, &mark);
3710 gdk_draw_rectangle (text->text_area,
3719 for (; chars > 0; chars -= len, buffer += len, len = 0)
3721 if (buffer[0] != '\t')
3723 guchar* next_tab = memchr (buffer, '\t', chars);
3727 len = MIN (MARK_CURRENT_PROPERTY (&mark)->length - mark.offset, chars);
3730 len = MIN (len, next_tab - buffer);
3732 if (mark.index < selection_start_pos)
3733 len = MIN (len, selection_start_pos - mark.index);
3734 else if (mark.index < selection_end_pos)
3735 len = MIN (len, selection_end_pos - mark.index);
3737 font = MARK_CURRENT_PROPERTY (&mark)->font->gdk_font;
3738 if (font->type == GDK_FONT_FONT)
3740 gdk_gc_set_font (text->gc, font);
3741 gdk_gc_get_values (text->gc, &gc_values);
3742 pixel_width = gdk_text_width (gc_values.font,
3743 (gchar*) buffer, len);
3746 pixel_width = gdk_text_width (font, (gchar*) buffer, len);
3748 bg_gc = mark_bg_gc (text, &mark);
3750 gdk_draw_rectangle (text->text_area,
3758 if ((mark.index >= selection_start_pos) &&
3759 (mark.index < selection_end_pos))
3761 if (editable->has_selection)
3762 fg_gc = GTK_WIDGET(text)->style->fg_gc[GTK_STATE_SELECTED];
3764 fg_gc = GTK_WIDGET(text)->style->fg_gc[GTK_STATE_ACTIVE];
3768 gdk_gc_set_foreground (text->gc, MARK_CURRENT_FORE (&mark));
3772 gdk_draw_text (text->text_area, MARK_CURRENT_FONT (&mark),
3779 running_offset += pixel_width;
3781 advance_tab_mark_n (text, &tab_mark, len);
3787 bg_gc = mark_bg_gc (text, &mark);
3790 gint pixels_remaining;
3794 gdk_window_get_size (text->text_area, &pixels_remaining, NULL);
3795 pixels_remaining -= (LINE_WRAP_ROOM + running_offset);
3797 space_width = MARK_CURRENT_TEXT_FONT(&mark)->char_widths[' '];
3799 spaces_avail = pixels_remaining / space_width;
3800 spaces_avail = MIN (spaces_avail, tab_mark.to_next_tab);
3802 gdk_draw_rectangle (text->text_area,
3807 spaces_avail * space_width,
3811 running_offset += tab_mark.to_next_tab *
3812 MARK_CURRENT_TEXT_FONT(&mark)->char_widths[' '];
3814 advance_tab_mark (text, &tab_mark, '\t');
3817 advance_mark_n (&mark, len);
3822 draw_line_wrap (GtkText* text, guint height /* baseline height */)
3829 if (text->line_wrap)
3831 bitmap = text->line_wrap_bitmap;
3832 bitmap_width = line_wrap_width;
3833 bitmap_height = line_wrap_height;
3837 bitmap = text->line_arrow_bitmap;
3838 bitmap_width = line_arrow_width;
3839 bitmap_height = line_arrow_height;
3842 gdk_window_get_size (text->text_area, &width, NULL);
3843 width -= LINE_WRAP_ROOM;
3845 gdk_gc_set_stipple (text->gc,
3848 gdk_gc_set_fill (text->gc, GDK_STIPPLED);
3850 gdk_gc_set_foreground (text->gc, >K_WIDGET (text)->style->text[GTK_STATE_NORMAL]);
3852 gdk_gc_set_ts_origin (text->gc,
3854 height - bitmap_height - 1);
3856 gdk_draw_rectangle (text->text_area,
3860 height - bitmap_height - 1 /* one pixel above the baseline. */,
3864 gdk_gc_set_ts_origin (text->gc, 0, 0);
3866 gdk_gc_set_fill (text->gc, GDK_SOLID);
3870 undraw_cursor (GtkText* text, gint absolute)
3872 TDEBUG (("in undraw_cursor\n"));
3875 text->cursor_drawn_level = 0;
3877 if (text->has_cursor && (text->cursor_drawn_level ++ == 0) &&
3878 (GTK_EDITABLE(text)->selection_start_pos == GTK_EDITABLE(text)->selection_end_pos))
3882 g_assert(text->cursor_mark.property);
3884 font = MARK_CURRENT_FONT(&text->cursor_mark);
3886 if (GTK_WIDGET (text)->style->bg_pixmap[GTK_STATE_NORMAL])
3890 rect.x = text->cursor_pos_x;
3891 rect.y = text->cursor_pos_y - text->cursor_char_offset - font->ascent;
3893 rect.height = font->ascent + 1; /* @@@ I add one here because draw_line is inclusive, right? */
3895 clear_area (text, &rect);
3899 if (MARK_CURRENT_BACK (&text->cursor_mark))
3900 gdk_gc_set_foreground (text->gc, MARK_CURRENT_BACK (&text->cursor_mark));
3902 gdk_gc_set_foreground (text->gc, >K_WIDGET (text)->style->base[GTK_STATE_NORMAL]);
3904 gdk_draw_line (text->text_area, text->gc, text->cursor_pos_x,
3905 text->cursor_pos_y - text->cursor_char_offset, text->cursor_pos_x,
3906 text->cursor_pos_y - text->cursor_char_offset - font->ascent);
3909 if (text->cursor_char)
3911 if (font->type == GDK_FONT_FONT)
3912 gdk_gc_set_font (text->gc, font);
3914 gdk_gc_set_foreground (text->gc, MARK_CURRENT_FORE (&text->cursor_mark));
3916 gdk_draw_text (text->text_area, font,
3919 text->cursor_pos_y - text->cursor_char_offset,
3927 drawn_cursor_min (GtkText* text)
3929 if (text->has_cursor)
3933 g_assert(text->cursor_mark.property);
3935 font = MARK_CURRENT_FONT(&text->cursor_mark);
3937 return text->cursor_pos_y - text->cursor_char_offset - font->ascent;
3944 drawn_cursor_max (GtkText* text)
3946 if (text->has_cursor)
3950 g_assert(text->cursor_mark.property);
3952 font = MARK_CURRENT_FONT(&text->cursor_mark);
3954 return text->cursor_pos_y - text->cursor_char_offset;
3961 draw_cursor (GtkText* text, gint absolute)
3963 TDEBUG (("in draw_cursor\n"));
3966 text->cursor_drawn_level = 1;
3968 if (text->has_cursor && (--text->cursor_drawn_level == 0) &&
3969 (GTK_EDITABLE(text)->selection_start_pos == GTK_EDITABLE(text)->selection_end_pos))
3973 g_assert (text->cursor_mark.property);
3975 font = MARK_CURRENT_FONT (&text->cursor_mark);
3977 gdk_gc_set_foreground (text->gc, >K_WIDGET (text)->style->text[GTK_STATE_NORMAL]);
3979 gdk_draw_line (text->text_area, text->gc, text->cursor_pos_x,
3980 text->cursor_pos_y - text->cursor_char_offset,
3982 text->cursor_pos_y - text->cursor_char_offset - font->ascent);
3987 clear_area (GtkText *text, GdkRectangle *area)
3989 GtkWidget *widget = GTK_WIDGET (text);
3991 if (widget->style->bg_pixmap[GTK_STATE_NORMAL])
3994 gint x = area->x, y = area->y;
3997 gdk_window_get_size (widget->style->bg_pixmap[GTK_STATE_NORMAL], &width, &height);
3999 yorig = - text->first_onscreen_ver_pixel;
4000 xorig = - text->first_onscreen_hor_pixel;
4002 for (y = area->y; y < area->y + area->height; )
4004 gint yoff = (y - yorig) % height;
4005 gint yw = MIN(height - yoff, (area->y + area->height) - y);
4007 for (x = area->x; x < area->x + area->width; )
4009 gint xoff = (x - xorig) % width;
4010 gint xw = MIN(width - xoff, (area->x + area->width) - x);
4012 gdk_draw_pixmap (text->text_area,
4014 widget->style->bg_pixmap[GTK_STATE_NORMAL],
4028 gdk_window_clear_area (text->text_area, area->x, area->y, area->width, area->height);
4032 expose_text (GtkText* text, GdkRectangle *area, gboolean cursor)
4034 GList *cache = text->line_start_cache;
4035 gint pixels = - text->first_cut_pixels;
4036 gint min_y = area->y;
4037 gint max_y = area->y + area->height;
4040 gdk_window_get_size (text->text_area, NULL, &height);
4041 max_y = MIN (max_y, height);
4043 TDEBUG (("in expose x=%d y=%d w=%d h=%d\n", area->x, area->y, area->width, area->height));
4045 clear_area (text, area);
4047 for (; pixels < height; cache = cache->next)
4049 if (pixels < max_y && (pixels + LINE_HEIGHT(CACHE_DATA(cache))) >= min_y)
4051 draw_line (text, pixels, &CACHE_DATA(cache));
4053 if (CACHE_DATA(cache).wraps)
4054 draw_line_wrap (text, pixels + CACHE_DATA(cache).font_ascent);
4057 if (cursor && text->has_cursor && GTK_WIDGET_HAS_FOCUS (text))
4059 if (CACHE_DATA(cache).start.index <= text->cursor_mark.index &&
4060 CACHE_DATA(cache).end.index >= text->cursor_mark.index)
4061 draw_cursor (text, TRUE);
4064 pixels += LINE_HEIGHT(CACHE_DATA(cache));
4068 fetch_lines_forward (text, 1);
4077 gtk_text_update_text (GtkEditable *editable,
4081 GtkText *text = GTK_TEXT (editable);
4083 GList *cache = text->line_start_cache;
4084 gint pixels = - text->first_cut_pixels;
4090 end_pos = TEXT_LENGTH (text);
4092 gdk_window_get_size (text->text_area, &width, &height);
4098 TDEBUG (("in expose span start=%d stop=%d\n", start_pos, end_pos));
4100 for (; pixels < height; cache = cache->next)
4102 if (CACHE_DATA(cache).start.index < end_pos)
4104 if (CACHE_DATA(cache).end.index >= start_pos)
4108 area.height = pixels + LINE_HEIGHT(CACHE_DATA(cache)) - area.y;
4114 pixels += LINE_HEIGHT(CACHE_DATA(cache));
4118 fetch_lines_forward (text, 1);
4126 expose_text (text, &area, TRUE);
4130 recompute_geometry (GtkText* text)
4132 GtkPropertyMark start_mark;
4138 start_mark = set_vertical_scroll (text);
4140 gdk_window_get_size (text->text_area, &width, &height);
4142 text->line_start_cache = fetch_lines (text,
4146 height + text->first_cut_pixels);
4151 /**********************************************************************/
4153 /**********************************************************************/
4156 gtk_text_set_selection (GtkEditable *editable,
4160 GtkText *text = GTK_TEXT (editable);
4162 guint start1, end1, start2, end2;
4165 end = TEXT_LENGTH (text);
4167 start1 = MIN(start,end);
4168 end1 = MAX(start,end);
4169 start2 = MIN(editable->selection_start_pos, editable->selection_end_pos);
4170 end2 = MAX(editable->selection_start_pos, editable->selection_end_pos);
4172 if (start2 < start1)
4176 tmp = start1; start1 = start2; start2 = tmp;
4177 tmp = end1; end1 = end2; end2 = tmp;
4180 undraw_cursor (text, FALSE);
4181 editable->selection_start_pos = start;
4182 editable->selection_end_pos = end;
4183 draw_cursor (text, FALSE);
4185 /* Expose only what changed */
4187 if (start1 < start2)
4188 gtk_text_update_text (editable, start1, MIN(end1, start2));
4191 gtk_text_update_text (editable, MAX(end1, start2), end2);
4192 else if (end2 < end1)
4193 gtk_text_update_text (editable, end2, end1);
4197 /**********************************************************************/
4199 /**********************************************************************/
4201 #ifdef DEBUG_GTK_TEXT
4203 gtk_text_show_cache_line (GtkText *text, GList *cache,
4204 const char* what, const char* func, gint line)
4206 LineParams *lp = &CACHE_DATA(cache);
4209 if (cache == text->line_start_cache)
4210 g_print ("Line Start Cache: ");
4212 if (cache == text->current_line)
4213 g_print("Current Line: ");
4215 g_print ("%s:%d: cache line %s s=%d,e=%d,lh=%d (",
4223 for (i = lp->start.index; i < (lp->end.index + lp->wraps); i += 1)
4224 g_print ("%c", GTK_TEXT_INDEX (text, i));
4230 gtk_text_show_cache (GtkText *text, const char* func, gint line)
4232 GList *l = text->line_start_cache;
4238 /* back up to the absolute beginning of the line cache */
4242 g_print ("*** line cache ***\n");
4243 for (; l; l = l->next)
4244 gtk_text_show_cache_line (text, l, "all", func, line);
4248 gtk_text_assert_mark (GtkText *text,
4249 GtkPropertyMark *mark,
4250 GtkPropertyMark *before,
4251 GtkPropertyMark *after,
4256 GtkPropertyMark correct_mark = find_mark (text, mark->index);
4258 if (mark->offset != correct_mark.offset ||
4259 mark->property != correct_mark.property)
4260 g_warning ("incorrect %s text property marker in %s:%d, index %d -- bad!", where, msg, line, mark->index);
4264 gtk_text_assert (GtkText *text,
4268 GList* cache = text->line_start_cache;
4269 GtkPropertyMark* before_mark = NULL;
4270 GtkPropertyMark* after_mark = NULL;
4272 gtk_text_show_props (text, msg, line);
4274 for (; cache->prev; cache = cache->prev)
4277 g_print ("*** line markers ***\n");
4279 for (; cache; cache = cache->next)
4281 after_mark = &CACHE_DATA(cache).end;
4282 gtk_text_assert_mark (text, &CACHE_DATA(cache).start, before_mark, after_mark, msg, "start", line);
4283 before_mark = &CACHE_DATA(cache).start;
4286 after_mark = &CACHE_DATA(cache->next).start;
4290 gtk_text_assert_mark (text, &CACHE_DATA(cache).end, before_mark, after_mark, msg, "end", line);
4291 before_mark = &CACHE_DATA(cache).end;
4296 gtk_text_show_adj (GtkText *text,
4302 g_print ("*** adjustment ***\n");
4304 g_print ("%s:%d: %s adjustment l=%.1f u=%.1f v=%.1f si=%.1f pi=%.1f ps=%.1f\n",
4311 adj->step_increment,
4312 adj->page_increment,
4317 gtk_text_show_props (GtkText *text,
4321 GList* props = text->text_properties;
4324 g_print ("%s:%d: ", msg, line);
4326 for (; props; props = props->next)
4328 TextProperty *p = (TextProperty*)props->data;
4330 proplen += p->length;
4332 g_print ("[%d,%p,%p,%p,%p] ", p->length, p, p->font, p->fore_color, p->back_color);
4337 if (proplen - 1 != TEXT_LENGTH(text))
4338 g_warning ("incorrect property list length in %s:%d -- bad!", msg, line);