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 1
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
43 #define SCROLL_TIME 100
44 #define FREEZE_LENGTH 1024
45 /* Freeze text when inserting or deleting more than this many characters */
47 #define SET_PROPERTY_MARK(m, p, o) do { \
48 (m)->property = (p); \
51 #define MARK_CURRENT_PROPERTY(mark) ((TextProperty*)(mark)->property->data)
52 #define MARK_NEXT_PROPERTY(mark) ((TextProperty*)(mark)->property->next->data)
53 #define MARK_PREV_PROPERTY(mark) ((TextProperty*)((mark)->property->prev ? \
54 (mark)->property->prev->data \
56 #define MARK_PREV_LIST_PTR(mark) ((mark)->property->prev)
57 #define MARK_LIST_PTR(mark) ((mark)->property)
58 #define MARK_NEXT_LIST_PTR(mark) ((mark)->property->next)
59 #define MARK_OFFSET(mark) ((mark)->offset)
60 #define MARK_PROPERTY_LENGTH(mark) (MARK_CURRENT_PROPERTY(mark)->length)
61 #define MARK_CURRENT_FONT(mark) (((TextProperty*)(mark)->property->data)->font->gdk_font)
62 #define MARK_CURRENT_FORE(mark) (&((TextProperty*)(mark)->property->data)->fore_color)
63 #define MARK_CURRENT_BACK(mark) (&((TextProperty*)(mark)->property->data)->back_color)
65 #define MARK_CURRENT_TEXT_FONT(m) (((TextProperty*)(m)->property->data)->font)
66 #define TEXT_LENGTH(t) ((t)->text_end - (t)->gap_size)
67 #define FONT_HEIGHT(f) ((f)->ascent + (f)->descent)
68 #define LINE_HEIGHT(l) ((l).font_ascent + (l).font_descent)
69 #define LINE_CONTAINS(l, i) ((l).start.index <= (i) && (l).end.index >= (i))
70 #define LINE_STARTS_AT(l, i) ((l).start.index == (i))
71 #define LINE_START_PIXEL(l) ((l).tab_cont.pixel_offset)
72 #define LAST_INDEX(t, m) ((m).index == TEXT_LENGTH(t))
73 #define CACHE_DATA(c) (*(LineParams*)(c)->data)
75 typedef struct _TextFont TextFont;
76 typedef struct _TextProperty TextProperty;
77 typedef struct _TabStopMark TabStopMark;
78 typedef struct _PrevTabCont PrevTabCont;
79 typedef struct _FetchLinesData FetchLinesData;
80 typedef struct _LineParams LineParams;
81 typedef struct _SetVerticalScrollData SetVerticalScrollData;
83 typedef gint (*LineIteratorFunction) (GtkText* text, LineParams* lp, void* data);
91 struct _SetVerticalScrollData {
100 /* The actual font. */
103 gint16 char_widths[256];
111 /* Background Color. */
114 /* Foreground Color. */
117 /* Length of this property. */
123 GList* tab_stops; /* Index into list containing the next tab position. If
124 * NULL, using default widths. */
131 TabStopMark tab_start;
134 struct _FetchLinesData
147 guint displayable_chars;
150 PrevTabCont tab_cont;
151 PrevTabCont tab_cont_next;
153 GtkPropertyMark start;
158 static void gtk_text_class_init (GtkTextClass *klass);
159 static void gtk_text_init (GtkText *text);
160 static void gtk_text_destroy (GtkObject *object);
161 static void gtk_text_realize (GtkWidget *widget);
162 static void gtk_text_unrealize (GtkWidget *widget);
163 static void gtk_text_draw_focus (GtkWidget *widget);
164 static void gtk_text_size_request (GtkWidget *widget,
165 GtkRequisition *requisition);
166 static void gtk_text_size_allocate (GtkWidget *widget,
167 GtkAllocation *allocation);
168 static void gtk_text_adjustment (GtkAdjustment *adjustment,
170 static void gtk_text_disconnect (GtkAdjustment *adjustment,
173 static void gtk_text_insert_text (GtkEditable *editable,
174 const gchar *new_text,
175 gint new_text_length,
177 static void gtk_text_delete_text (GtkEditable *editable,
180 static void gtk_text_update_text (GtkEditable *editable,
183 static gchar *gtk_text_get_chars (GtkEditable *editable,
186 static void gtk_text_set_selection (GtkEditable *editable,
191 static void gtk_text_draw (GtkWidget *widget,
193 static gint gtk_text_expose (GtkWidget *widget,
194 GdkEventExpose *event);
195 static gint gtk_text_button_press (GtkWidget *widget,
196 GdkEventButton *event);
197 static gint gtk_text_button_release (GtkWidget *widget,
198 GdkEventButton *event);
199 static gint gtk_text_motion_notify (GtkWidget *widget,
200 GdkEventMotion *event);
201 static gint gtk_text_key_press (GtkWidget *widget,
203 static gint gtk_text_focus_in (GtkWidget *widget,
204 GdkEventFocus *event);
205 static gint gtk_text_focus_out (GtkWidget *widget,
206 GdkEventFocus *event);
208 static void move_gap_to_point (GtkText* text);
209 static void make_forward_space (GtkText* text, guint len);
210 static void insert_text_property (GtkText* text, GdkFont* font,
211 GdkColor *fore, GdkColor* back, guint len);
212 static void delete_text_property (GtkText* text, guint len);
213 static void init_properties (GtkText *text);
214 static guint pixel_height_of (GtkText* text, GList* cache_line);
216 /* Property Movement and Size Computations */
217 static void advance_mark (GtkPropertyMark* mark);
218 static void decrement_mark (GtkPropertyMark* mark);
219 static void advance_mark_n (GtkPropertyMark* mark, gint n);
220 static void decrement_mark_n (GtkPropertyMark* mark, gint n);
221 static void move_mark_n (GtkPropertyMark* mark, gint n);
222 static GtkPropertyMark find_mark (GtkText* text, guint mark_position);
223 static GtkPropertyMark find_mark_near (GtkText* text, guint mark_position, const GtkPropertyMark* near);
224 static void find_line_containing_point (GtkText* text, guint point,
226 static TextProperty* new_text_property (GdkFont* font, GdkColor* fore, GdkColor* back, guint length);
229 static void compute_lines_pixels (GtkText* text, guint char_count,
230 guint *lines, guint *pixels);
232 static gint total_line_height (GtkText* text,
235 static LineParams find_line_params (GtkText* text,
236 const GtkPropertyMark *mark,
237 const PrevTabCont *tab_cont,
238 PrevTabCont *next_cont);
239 static void recompute_geometry (GtkText* text);
240 static void insert_expose (GtkText* text, guint old_pixels, gint nchars, guint new_line_count);
241 static void delete_expose (GtkText* text,
245 static void clear_area (GtkText *text, GdkRectangle *area);
246 static void draw_line (GtkText* text,
249 static void draw_line_wrap (GtkText* text,
251 static void draw_cursor (GtkText* text, gint absolute);
252 static void undraw_cursor (GtkText* text, gint absolute);
253 static gint drawn_cursor_min (GtkText* text);
254 static gint drawn_cursor_max (GtkText* text);
255 static void expose_text (GtkText* text, GdkRectangle *area, gboolean cursor);
257 /* Search and Placement. */
258 static void find_cursor (GtkText* text,
260 static void find_cursor_at_line (GtkText* text,
261 const LineParams* start_line,
263 static void find_mouse_cursor (GtkText* text, gint x, gint y);
266 static void adjust_adj (GtkText* text, GtkAdjustment* adj);
267 static void scroll_up (GtkText* text, gint diff);
268 static void scroll_down (GtkText* text, gint diff);
269 static void scroll_int (GtkText* text, gint diff);
271 static void process_exposes (GtkText *text);
273 /* Cache Management. */
274 static GList* remove_cache_line (GtkText* text, GList* list);
277 static void move_cursor_buffer_ver (GtkText *text, int dir);
278 static void move_cursor_page_ver (GtkText *text, int dir);
279 static void move_cursor_ver (GtkText *text, int count);
280 static void move_cursor_hor (GtkText *text, int count);
282 static void gtk_text_move_forward_character (GtkText *text);
283 static void gtk_text_move_backward_character (GtkText *text);
284 static void gtk_text_move_forward_word (GtkText *text);
285 static void gtk_text_move_backward_word (GtkText *text);
286 static void gtk_text_move_beginning_of_line (GtkText *text);
287 static void gtk_text_move_end_of_line (GtkText *text);
288 static void gtk_text_move_next_line (GtkText *text);
289 static void gtk_text_move_previous_line (GtkText *text);
291 static void gtk_text_delete_forward_character (GtkText *text);
292 static void gtk_text_delete_backward_character (GtkText *text);
293 static void gtk_text_delete_forward_word (GtkText *text);
294 static void gtk_text_delete_backward_word (GtkText *text);
295 static void gtk_text_delete_line (GtkText *text);
296 static void gtk_text_delete_to_line_end (GtkText *text);
297 static void gtk_text_select_word (GtkText *text,
299 static void gtk_text_select_line (GtkText *text,
302 /* #define DEBUG_GTK_TEXT */
304 #if defined(DEBUG_GTK_TEXT) && defined(__GNUC__)
305 /* Debugging utilities. */
306 static void gtk_text_assert_mark (GtkText *text,
307 GtkPropertyMark *mark,
308 GtkPropertyMark *before,
309 GtkPropertyMark *after,
314 static void gtk_text_assert (GtkText *text,
317 static void gtk_text_show_cache_line (GtkText *text, GList *cache,
318 const char* what, const char* func, gint line);
319 static void gtk_text_show_cache (GtkText *text, const char* func, gint line);
320 static void gtk_text_show_adj (GtkText *text,
325 static void gtk_text_show_props (GtkText* test,
329 #define TDEBUG(args) g_print args
330 #define TEXT_ASSERT(text) gtk_text_assert (text,__PRETTY_FUNCTION__,__LINE__)
331 #define TEXT_ASSERT_MARK(text,mark,msg) gtk_text_assert_mark (text,mark, \
332 __PRETTY_FUNCTION__,msg,__LINE__)
333 #define TEXT_SHOW(text) gtk_text_show_cache (text, __PRETTY_FUNCTION__,__LINE__)
334 #define TEXT_SHOW_LINE(text,line,msg) gtk_text_show_cache_line (text,line,msg,\
335 __PRETTY_FUNCTION__,__LINE__)
336 #define TEXT_SHOW_ADJ(text,adj,msg) gtk_text_show_adj (text,adj,msg, \
337 __PRETTY_FUNCTION__,__LINE__)
340 #define TEXT_ASSERT(text)
341 #define TEXT_ASSERT_MARK(text,mark,msg)
342 #define TEXT_SHOW(text)
343 #define TEXT_SHOW_LINE(text,line,msg)
344 #define TEXT_SHOW_ADJ(text,adj,msg)
347 /* Memory Management. */
348 static GMemChunk *params_mem_chunk = NULL;
349 static GMemChunk *text_property_chunk = NULL;
351 static GtkWidgetClass *parent_class = NULL;
354 static GtkTextFunction control_keys[26] =
356 (GtkTextFunction)gtk_text_move_beginning_of_line, /* a */
357 (GtkTextFunction)gtk_text_move_backward_character, /* b */
358 gtk_editable_copy_clipboard, /* c */
359 (GtkTextFunction)gtk_text_delete_forward_character, /* d */
360 (GtkTextFunction)gtk_text_move_end_of_line, /* e */
361 (GtkTextFunction)gtk_text_move_forward_character, /* f */
363 (GtkTextFunction)gtk_text_delete_backward_character, /* h */
366 (GtkTextFunction)gtk_text_delete_to_line_end, /* k */
369 (GtkTextFunction)gtk_text_move_next_line, /* n */
371 (GtkTextFunction)gtk_text_move_previous_line, /* p */
376 (GtkTextFunction)gtk_text_delete_line, /* u */
377 gtk_editable_paste_clipboard, /* v */
378 (GtkTextFunction)gtk_text_delete_backward_word, /* w */
379 gtk_editable_cut_clipboard, /* x */
384 static GtkTextFunction alt_keys[26] =
387 (GtkTextFunction)gtk_text_move_backward_word, /* b */
389 (GtkTextFunction)gtk_text_delete_forward_word, /* d */
391 (GtkTextFunction)gtk_text_move_forward_word, /* f */
415 /**********************************************************************/
417 /**********************************************************************/
422 static guint text_type = 0;
426 GtkTypeInfo text_info =
430 sizeof (GtkTextClass),
431 (GtkClassInitFunc) gtk_text_class_init,
432 (GtkObjectInitFunc) gtk_text_init,
433 (GtkArgSetFunc) NULL,
434 (GtkArgGetFunc) NULL,
437 text_type = gtk_type_unique (gtk_editable_get_type (), &text_info);
444 gtk_text_class_init (GtkTextClass *class)
446 GtkObjectClass *object_class;
447 GtkWidgetClass *widget_class;
448 GtkEditableClass *editable_class;
450 object_class = (GtkObjectClass*) class;
451 widget_class = (GtkWidgetClass*) class;
452 editable_class = (GtkEditableClass*) class;
454 parent_class = gtk_type_class (gtk_editable_get_type ());
456 object_class->destroy = gtk_text_destroy;
458 widget_class->realize = gtk_text_realize;
459 widget_class->unrealize = gtk_text_unrealize;
460 widget_class->draw_focus = gtk_text_draw_focus;
461 widget_class->size_request = gtk_text_size_request;
462 widget_class->size_allocate = gtk_text_size_allocate;
463 widget_class->draw = gtk_text_draw;
464 widget_class->expose_event = gtk_text_expose;
465 widget_class->button_press_event = gtk_text_button_press;
466 widget_class->button_release_event = gtk_text_button_release;
467 widget_class->motion_notify_event = gtk_text_motion_notify;
468 widget_class->key_press_event = gtk_text_key_press;
469 widget_class->focus_in_event = gtk_text_focus_in;
470 widget_class->focus_out_event = gtk_text_focus_out;
472 editable_class->insert_text = gtk_text_insert_text;
473 editable_class->delete_text = gtk_text_delete_text;
474 editable_class->update_text = gtk_text_update_text;
475 editable_class->get_chars = gtk_text_get_chars;
476 editable_class->set_selection = gtk_text_set_selection;
480 gtk_text_init (GtkText *text)
482 GTK_WIDGET_SET_FLAGS (text, GTK_CAN_FOCUS);
484 text->text = g_new (guchar, INITIAL_BUFFER_SIZE);
485 text->text_len = INITIAL_BUFFER_SIZE;
487 if (!params_mem_chunk)
488 params_mem_chunk = g_mem_chunk_new ("LineParams",
490 256 * sizeof (LineParams),
493 text->default_tab_width = 4;
494 text->tab_stops = NULL;
496 text->tab_stops = g_list_prepend (text->tab_stops, (void*)8);
497 text->tab_stops = g_list_prepend (text->tab_stops, (void*)8);
499 text->line_wrap = TRUE;
504 GTK_EDITABLE(text)->editable = FALSE;
508 gtk_text_new (GtkAdjustment *hadj,
513 text = gtk_type_new (gtk_text_get_type ());
515 gtk_text_set_adjustments (text, hadj, vadj);
517 return GTK_WIDGET (text);
521 gtk_text_set_editable (GtkText *text,
526 g_return_if_fail (text != NULL);
527 g_return_if_fail (GTK_IS_TEXT (text));
529 widget = GTK_WIDGET (text);
530 GTK_EDITABLE(text)->editable = (editable != FALSE);
533 draw_cursor (text, TRUE);
535 undraw_cursor (text, TRUE);
537 if (GTK_WIDGET_DRAWABLE (widget) &&
538 widget->style->bg_pixmap[GTK_STATE_NORMAL])
540 gdk_window_clear (widget->window); /* just the border */
541 gtk_widget_queue_draw (widget);
546 gtk_text_set_adjustments (GtkText *text,
550 g_return_if_fail (text != NULL);
551 g_return_if_fail (GTK_IS_TEXT (text));
553 if (text->hadj && (text->hadj != hadj))
555 gtk_signal_disconnect_by_data (GTK_OBJECT (text->hadj), text);
556 gtk_object_unref (GTK_OBJECT (text->hadj));
559 if (text->vadj && (text->vadj != vadj))
561 gtk_signal_disconnect_by_data (GTK_OBJECT (text->vadj), text);
562 gtk_object_unref (GTK_OBJECT (text->vadj));
566 hadj = GTK_ADJUSTMENT (gtk_adjustment_new (0.0, 0.0, 0.0, 0.0, 0.0, 0.0));
569 vadj = GTK_ADJUSTMENT (gtk_adjustment_new (0.0, 0.0, 0.0, 0.0, 0.0, 0.0));
571 if (text->hadj != hadj)
574 gtk_object_ref (GTK_OBJECT (text->hadj));
575 gtk_object_sink (GTK_OBJECT (text->hadj));
577 gtk_signal_connect (GTK_OBJECT (text->hadj), "changed",
578 (GtkSignalFunc) gtk_text_adjustment,
580 gtk_signal_connect (GTK_OBJECT (text->hadj), "value_changed",
581 (GtkSignalFunc) gtk_text_adjustment,
583 gtk_signal_connect (GTK_OBJECT (text->hadj), "disconnect",
584 (GtkSignalFunc) gtk_text_disconnect,
588 if (text->vadj != vadj)
591 gtk_object_ref (GTK_OBJECT (text->vadj));
592 gtk_object_sink (GTK_OBJECT (text->vadj));
594 gtk_signal_connect (GTK_OBJECT (text->vadj), "changed",
595 (GtkSignalFunc) gtk_text_adjustment,
597 gtk_signal_connect (GTK_OBJECT (text->vadj), "value_changed",
598 (GtkSignalFunc) gtk_text_adjustment,
600 gtk_signal_connect (GTK_OBJECT (text->vadj), "disconnect",
601 (GtkSignalFunc) gtk_text_disconnect,
607 gtk_text_set_point (GtkText *text,
610 g_return_if_fail (text != NULL);
611 g_return_if_fail (GTK_IS_TEXT (text));
612 g_return_if_fail (index <= TEXT_LENGTH (text));
614 text->point = find_mark (text, index);
618 gtk_text_get_point (GtkText *text)
620 g_return_val_if_fail (text != NULL, 0);
621 g_return_val_if_fail (GTK_IS_TEXT (text), 0);
623 return text->point.index;
627 gtk_text_get_length (GtkText *text)
629 g_return_val_if_fail (text != NULL, 0);
630 g_return_val_if_fail (GTK_IS_TEXT (text), 0);
632 return TEXT_LENGTH (text);
636 gtk_text_freeze (GtkText *text)
638 g_return_if_fail (text != NULL);
639 g_return_if_fail (GTK_IS_TEXT (text));
645 gtk_text_thaw (GtkText *text)
647 g_return_if_fail (text != NULL);
648 g_return_if_fail (GTK_IS_TEXT (text));
650 text->freeze = FALSE;
652 if (GTK_WIDGET_DRAWABLE (text))
654 recompute_geometry (text);
655 gtk_widget_queue_draw (GTK_WIDGET (text));
660 gtk_text_insert (GtkText *text,
667 GtkEditable *editable = GTK_EDITABLE (text);
668 gboolean frozen = FALSE;
670 gint new_line_count = 1;
671 guint old_height = 0;
675 g_return_if_fail (text != NULL);
676 g_return_if_fail (GTK_IS_TEXT (text));
678 /* This must be because we need to have the style set up. */
679 g_assert (GTK_WIDGET_REALIZED(text));
682 length = strlen (chars);
689 if (!text->freeze && (length > FREEZE_LENGTH))
691 gtk_text_freeze (text);
696 fore = >K_WIDGET (text)->style->text[GTK_STATE_NORMAL];
698 back = >K_WIDGET (text)->style->base[GTK_STATE_NORMAL];
700 if (!text->freeze && (text->line_start_cache != NULL))
702 find_line_containing_point (text, text->point.index, TRUE);
703 old_height = total_line_height (text, text->current_line, 1);
704 for (i=0; i<length; i++)
705 if (chars[i] == '\n')
709 if (text->point.index < text->first_line_start_index)
710 text->first_line_start_index += length;
712 if (text->point.index < editable->selection_start_pos)
713 editable->selection_start_pos += length;
714 if (text->point.index < editable->selection_end_pos)
715 editable->selection_end_pos += length;
716 /* We'll reset the cursor later anyways if we aren't frozen */
717 if (text->point.index < text->cursor_mark.index)
718 text->cursor_mark.index += length;
720 move_gap_to_point (text);
723 font = GTK_WIDGET (text)->style->font;
725 make_forward_space (text, length);
727 memcpy (text->text + text->gap_position, chars, length);
729 insert_text_property (text, font, fore, back, length);
731 text->gap_size -= length;
732 text->gap_position += length;
734 advance_mark_n (&text->point, length);
736 if (!text->freeze && (text->line_start_cache != NULL))
737 insert_expose (text, old_height, length, new_line_count);
740 gtk_text_thaw (text);
744 gtk_text_backward_delete (GtkText *text,
747 g_return_val_if_fail (text != NULL, 0);
748 g_return_val_if_fail (GTK_IS_TEXT (text), 0);
750 if (nchars > text->point.index || nchars <= 0)
753 gtk_text_set_point (text, text->point.index - nchars);
755 return gtk_text_forward_delete (text, nchars);
759 gtk_text_forward_delete (GtkText *text,
762 guint old_lines, old_height;
763 GtkEditable *editable = GTK_EDITABLE (text);
764 gboolean frozen = FALSE;
766 g_return_val_if_fail (text != NULL, 0);
767 g_return_val_if_fail (GTK_IS_TEXT (text), 0);
769 if (text->point.index + nchars > TEXT_LENGTH (text) || nchars <= 0)
772 if (!text->freeze && (nchars > FREEZE_LENGTH))
774 gtk_text_freeze (text);
778 if (!text->freeze && (text->line_start_cache != NULL))
780 find_line_containing_point (text, text->point.index, TRUE);
781 compute_lines_pixels (text, nchars, &old_lines, &old_height);
784 if (text->point.index < text->first_line_start_index)
786 if (text->point.index + nchars >= text->first_line_start_index)
788 text->first_line_start_index = text->point.index;
789 while ((text->first_line_start_index > 0) &&
790 (GTK_TEXT_INDEX (text, text->first_line_start_index - 1) != LINE_DELIM))
791 text->first_line_start_index -= 1;
795 text->first_line_start_index -= nchars;
798 if (text->point.index < editable->selection_start_pos)
799 editable->selection_start_pos -=
800 MIN(nchars, editable->selection_start_pos - text->point.index);
801 if (text->point.index < editable->selection_end_pos)
802 editable->selection_end_pos -=
803 MIN(nchars, editable->selection_end_pos - text->point.index);
804 /* We'll reset the cursor later anyways if we aren't frozen */
805 if (text->point.index < text->cursor_mark.index)
806 text->cursor_mark.index -=
807 MIN(nchars, text->cursor_mark.index - text->point.index);
809 move_gap_to_point (text);
811 text->gap_size += nchars;
813 delete_text_property (text, nchars);
815 if (!text->freeze && (text->line_start_cache != NULL))
816 delete_expose (text, nchars, old_lines, old_height);
819 gtk_text_thaw (text);
825 gtk_text_get_chars (GtkEditable *editable,
835 g_return_val_if_fail (editable != NULL, NULL);
836 g_return_val_if_fail (GTK_IS_TEXT (editable), NULL);
837 text = GTK_TEXT (editable);
840 end_pos = TEXT_LENGTH (text);
842 if ((start_pos < 0) ||
843 (end_pos > TEXT_LENGTH (text)) ||
844 (end_pos < start_pos))
847 nchars = end_pos - start_pos;
849 retval = g_new (gchar, nchars+1);
852 if (start_pos < text->gap_position)
854 n = MIN (text->gap_position - start_pos, nchars);
855 memcpy (p, &text->text[start_pos], n);
861 if (start_pos+nchars >= text->gap_position)
864 text->text + MAX (text->gap_position + text->gap_size,
865 start_pos + text->gap_size),
877 gtk_text_destroy (GtkObject *object)
881 g_return_if_fail (object != NULL);
882 g_return_if_fail (GTK_IS_TEXT (object));
884 text = (GtkText *)object;
887 gtk_object_unref (GTK_OBJECT (text->hadj));
892 gtk_object_unref (GTK_OBJECT (text->vadj));
897 gtk_timeout_remove (text->timer);
901 GTK_OBJECT_CLASS(parent_class)->destroy (object);
905 gtk_text_realize (GtkWidget *widget)
908 GtkEditable *editable;
909 GdkWindowAttr attributes;
910 gint attributes_mask;
912 g_return_if_fail (widget != NULL);
913 g_return_if_fail (GTK_IS_TEXT (widget));
915 text = GTK_TEXT (widget);
916 editable = GTK_EDITABLE (widget);
917 GTK_WIDGET_SET_FLAGS (text, GTK_REALIZED);
919 attributes.window_type = GDK_WINDOW_CHILD;
920 attributes.x = widget->allocation.x;
921 attributes.y = widget->allocation.y;
922 attributes.width = widget->allocation.width;
923 attributes.height = widget->allocation.height;
924 attributes.wclass = GDK_INPUT_OUTPUT;
925 attributes.visual = gtk_widget_get_visual (widget);
926 attributes.colormap = gtk_widget_get_colormap (widget);
927 attributes.event_mask = gtk_widget_get_events (widget);
928 attributes.event_mask |= (GDK_EXPOSURE_MASK |
929 GDK_BUTTON_PRESS_MASK |
930 GDK_BUTTON_RELEASE_MASK |
931 GDK_BUTTON_MOTION_MASK |
932 GDK_ENTER_NOTIFY_MASK |
933 GDK_LEAVE_NOTIFY_MASK |
935 attributes_mask = GDK_WA_X | GDK_WA_Y | GDK_WA_VISUAL | GDK_WA_COLORMAP;
937 widget->window = gdk_window_new (gtk_widget_get_parent_window (widget), &attributes, attributes_mask);
938 gdk_window_set_user_data (widget->window, text);
940 attributes.x = (widget->style->klass->xthickness + TEXT_BORDER_ROOM);
941 attributes.y = (widget->style->klass->ythickness + TEXT_BORDER_ROOM);
942 attributes.width = widget->allocation.width - attributes.x * 2;
943 attributes.height = widget->allocation.height - attributes.y * 2;
945 text->text_area = gdk_window_new (widget->window, &attributes, attributes_mask);
946 gdk_window_set_user_data (text->text_area, text);
948 widget->style = gtk_style_attach (widget->style, widget->window);
950 /* Can't call gtk_style_set_background here because it's handled specially */
951 gdk_window_set_background (widget->window, &widget->style->base[GTK_STATE_NORMAL]);
952 gdk_window_set_background (text->text_area, &widget->style->base[GTK_STATE_NORMAL]);
954 text->line_wrap_bitmap = gdk_bitmap_create_from_data (text->text_area,
955 (gchar*) line_wrap_bits,
959 text->line_arrow_bitmap = gdk_bitmap_create_from_data (text->text_area,
960 (gchar*) line_arrow_bits,
964 text->gc = gdk_gc_new (text->text_area);
965 gdk_gc_set_exposures (text->gc, TRUE);
966 gdk_gc_set_foreground (text->gc, &widget->style->text[GTK_STATE_NORMAL]);
976 GdkIMStyle supported_style = GdkIMPreeditNone | GdkIMPreeditNothing |
977 GdkIMPreeditPosition |
978 GdkIMStatusNone | GdkIMStatusNothing;
980 if (widget->style && widget->style->font->type != GDK_FONT_FONTSET)
981 supported_style &= ~GdkIMPreeditPosition;
983 style = gdk_im_decide_style (supported_style);
984 switch (style & GdkIMPreeditMask)
986 case GdkIMPreeditPosition:
987 if (widget->style && widget->style->font->type != GDK_FONT_FONTSET)
989 g_warning ("over-the-spot style requires fontset");
992 gdk_window_get_size (text->text_area, &width, &height);
996 rect.height = height;
1000 editable->ic = gdk_ic_new (text->text_area, text->text_area,
1002 "spotLocation", &spot,
1004 "fontSet", GDK_FONT_XFONT (widget->style->font),
1008 editable->ic = gdk_ic_new (text->text_area, text->text_area,
1012 if (editable->ic == NULL)
1013 g_warning ("Can't create input context.");
1016 GdkColormap *colormap;
1018 mask = gdk_window_get_events (text->text_area);
1019 mask |= gdk_ic_get_events (editable->ic);
1020 gdk_window_set_events (text->text_area, mask);
1022 if ((colormap = gtk_widget_get_colormap (widget)) !=
1023 gtk_widget_get_default_colormap ())
1025 gdk_ic_set_attr (editable->ic, "preeditAttributes",
1026 "colorMap", GDK_COLORMAP_XCOLORMAP (colormap),
1033 init_properties (text);
1035 gdk_window_show (text->text_area);
1037 if (editable->selection_start_pos != editable->selection_end_pos)
1038 gtk_editable_claim_selection (editable, TRUE, GDK_CURRENT_TIME);
1042 gtk_text_unrealize (GtkWidget *widget)
1046 g_return_if_fail (widget != NULL);
1047 g_return_if_fail (GTK_IS_TEXT (widget));
1049 text = GTK_TEXT (widget);
1051 gdk_window_set_user_data (text->text_area, NULL);
1052 gdk_window_destroy (text->text_area);
1053 text->text_area = NULL;
1055 gdk_gc_destroy (text->gc);
1058 if (GTK_WIDGET_CLASS (parent_class)->unrealize)
1059 (* GTK_WIDGET_CLASS (parent_class)->unrealize) (widget);
1063 clear_focus_area (GtkText *text, gint area_x, gint area_y, gint area_width, gint area_height)
1065 GtkWidget *widget = GTK_WIDGET (text);
1067 gint ythick = TEXT_BORDER_ROOM + widget->style->klass->ythickness;
1068 gint xthick = TEXT_BORDER_ROOM + widget->style->klass->xthickness;
1074 gdk_window_get_size (widget->style->bg_pixmap[GTK_STATE_NORMAL], &width, &height);
1076 yorig = - text->first_onscreen_ver_pixel + ythick;
1077 xorig = - text->first_onscreen_hor_pixel + xthick;
1085 for (y = area_y; y < area_y + area_height; )
1087 gint yoff = (y - yorig) % height;
1088 gint yw = MIN(height - yoff, (area_y + area_height) - y);
1090 for (x = area_x; x < area_x + area_width; )
1092 gint xoff = (x - xorig) % width;
1093 gint xw = MIN(width - xoff, (area_x + area_width) - x);
1095 gdk_draw_pixmap (widget->window,
1097 widget->style->bg_pixmap[GTK_STATE_NORMAL],
1114 gtk_text_draw_focus (GtkWidget *widget)
1120 g_return_if_fail (widget != NULL);
1121 g_return_if_fail (GTK_IS_TEXT (widget));
1123 text = GTK_TEXT (widget);
1125 if (GTK_WIDGET_DRAWABLE (widget))
1127 gint ythick = widget->style->klass->ythickness;
1128 gint xthick = widget->style->klass->xthickness;
1129 gint xextra = TEXT_BORDER_ROOM;
1130 gint yextra = TEXT_BORDER_ROOM;
1132 TDEBUG (("in gtk_text_draw_focus\n"));
1136 width = widget->allocation.width;
1137 height = widget->allocation.height;
1139 if (GTK_WIDGET_HAS_FOCUS (widget))
1148 gdk_draw_rectangle (widget->window,
1149 widget->style->fg_gc[GTK_STATE_NORMAL],
1151 widget->allocation.width - 1,
1152 widget->allocation.height - 1);
1155 gtk_draw_shadow (widget->style, widget->window,
1156 GTK_STATE_NORMAL, GTK_SHADOW_IN,
1157 x, y, width, height);
1161 width -= 2 * xthick;
1162 height -= 2 * ythick;
1164 if (widget->style->bg_pixmap[GTK_STATE_NORMAL] &&
1165 !GTK_EDITABLE (text)->editable)
1168 clear_focus_area (text, x, y, width, yextra);
1170 clear_focus_area (text, x, y + yextra,
1171 xextra, y + height - 2 * yextra);
1173 clear_focus_area (text, x + width - xextra, y + yextra,
1174 xextra, height - 2 * ythick);
1176 clear_focus_area (text, x, x + height - yextra, width, yextra);
1178 else if (!GTK_WIDGET_HAS_FOCUS (widget))
1180 gdk_draw_rectangle (widget->window,
1181 widget->style->base_gc[GTK_STATE_NORMAL], FALSE,
1189 TDEBUG (("in gtk_text_draw_focus (undrawable !!!)\n"));
1194 gtk_text_size_request (GtkWidget *widget,
1195 GtkRequisition *requisition)
1202 g_return_if_fail (widget != NULL);
1203 g_return_if_fail (GTK_IS_TEXT (widget));
1204 g_return_if_fail (requisition != NULL);
1206 xthickness = widget->style->klass->xthickness + TEXT_BORDER_ROOM;
1207 ythickness = widget->style->klass->ythickness + TEXT_BORDER_ROOM;
1209 char_height = MIN_TEXT_HEIGHT_LINES * (widget->style->font->ascent +
1210 widget->style->font->descent);
1212 char_width = MIN_TEXT_WIDTH_LINES * (gdk_text_width (widget->style->font,
1213 "ABCDEFGHIJKLMNOPQRSTUVWXYZ",
1217 requisition->width = char_width + xthickness * 2;
1218 requisition->height = char_height + ythickness * 2;
1222 gtk_text_size_allocate (GtkWidget *widget,
1223 GtkAllocation *allocation)
1226 GtkEditable *editable;
1228 g_return_if_fail (widget != NULL);
1229 g_return_if_fail (GTK_IS_TEXT (widget));
1230 g_return_if_fail (allocation != NULL);
1232 text = GTK_TEXT (widget);
1233 editable = GTK_EDITABLE (widget);
1235 widget->allocation = *allocation;
1236 if (GTK_WIDGET_REALIZED (widget))
1238 gdk_window_move_resize (widget->window,
1239 allocation->x, allocation->y,
1240 allocation->width, allocation->height);
1242 gdk_window_move_resize (text->text_area,
1243 widget->style->klass->xthickness + TEXT_BORDER_ROOM,
1244 widget->style->klass->ythickness + TEXT_BORDER_ROOM,
1245 widget->allocation.width - (widget->style->klass->xthickness +
1246 TEXT_BORDER_ROOM) * 2,
1247 widget->allocation.height - (widget->style->klass->ythickness +
1248 TEXT_BORDER_ROOM) * 2);
1251 if (editable->ic && (gdk_ic_get_style (editable->ic) & GdkIMPreeditPosition))
1256 gdk_window_get_size (text->text_area, &width, &height);
1260 rect.height = height;
1261 gdk_ic_set_attr (editable->ic, "preeditAttributes", "area", &rect, NULL);
1265 recompute_geometry (text);
1270 gtk_text_draw (GtkWidget *widget,
1273 g_return_if_fail (widget != NULL);
1274 g_return_if_fail (GTK_IS_TEXT (widget));
1275 g_return_if_fail (area != NULL);
1277 if (GTK_WIDGET_DRAWABLE (widget))
1279 expose_text (GTK_TEXT (widget), area, TRUE);
1280 gtk_widget_draw_focus (widget);
1285 gtk_text_expose (GtkWidget *widget,
1286 GdkEventExpose *event)
1288 g_return_val_if_fail (widget != NULL, FALSE);
1289 g_return_val_if_fail (GTK_IS_TEXT (widget), FALSE);
1290 g_return_val_if_fail (event != NULL, FALSE);
1292 if (event->window == GTK_TEXT (widget)->text_area)
1294 TDEBUG (("in gtk_text_expose (expose)\n"));
1295 expose_text (GTK_TEXT (widget), &event->area, TRUE);
1297 else if (event->count == 0)
1299 TDEBUG (("in gtk_text_expose (focus)\n"));
1300 gtk_widget_draw_focus (widget);
1307 gtk_text_scroll_timeout (gpointer data)
1310 GdkEventMotion event;
1313 GdkModifierType mask;
1315 g_return_val_if_fail (GTK_IS_TEXT (data), FALSE);
1317 text = GTK_TEXT (data);
1320 gdk_window_get_pointer (text->text_area, &x, &y, &mask);
1322 if (!(mask & (GDK_BUTTON1_MASK | GDK_BUTTON3_MASK)))
1330 gtk_text_motion_notify (GTK_WIDGET (text), &event);
1336 gtk_text_button_press (GtkWidget *widget,
1337 GdkEventButton *event)
1340 GtkEditable *editable;
1341 static GdkAtom ctext_atom = GDK_NONE;
1343 g_return_val_if_fail (widget != NULL, FALSE);
1344 g_return_val_if_fail (GTK_IS_TEXT (widget), FALSE);
1345 g_return_val_if_fail (event != NULL, FALSE);
1347 if (ctext_atom == GDK_NONE)
1348 ctext_atom = gdk_atom_intern ("COMPOUND_TEXT", FALSE);
1350 text = GTK_TEXT (widget);
1351 editable = GTK_EDITABLE (widget);
1353 if (text->button && (event->type == GDK_BUTTON_PRESS))
1355 GdkEventButton release_event = *event;
1357 release_event.type = GDK_BUTTON_RELEASE;
1358 release_event.button = text->button;
1360 gtk_text_button_release (widget, &release_event);
1363 text->button = event->button;
1365 if (!GTK_WIDGET_HAS_FOCUS (widget))
1366 gtk_widget_grab_focus (widget);
1368 if (event->button == 1)
1370 switch (event->type)
1372 case GDK_BUTTON_PRESS:
1373 gtk_grab_add (widget);
1375 undraw_cursor (text, FALSE);
1376 find_mouse_cursor (text, (gint)event->x, (gint)event->y);
1377 draw_cursor (text, FALSE);
1379 /* Set it now, so we display things right. We'll unset it
1380 * later if things don't work out */
1381 editable->has_selection = TRUE;
1382 gtk_text_set_selection (GTK_EDITABLE(text),
1383 text->cursor_mark.index,
1384 text->cursor_mark.index);
1388 case GDK_2BUTTON_PRESS:
1389 gtk_text_select_word (text, event->time);
1392 case GDK_3BUTTON_PRESS:
1393 gtk_text_select_line (text, event->time);
1400 else if (event->type == GDK_BUTTON_PRESS)
1402 if ((event->button == 2) && editable->editable)
1404 if (editable->selection_start_pos == editable->selection_end_pos ||
1405 editable->has_selection)
1407 undraw_cursor (text, FALSE);
1408 find_mouse_cursor (text, (gint)event->x, (gint)event->y);
1409 draw_cursor (text, FALSE);
1413 gtk_selection_convert (widget, GDK_SELECTION_PRIMARY,
1414 ctext_atom, event->time);
1418 gtk_grab_add (widget);
1420 undraw_cursor (text, FALSE);
1421 find_mouse_cursor (text, event->x, event->y);
1422 draw_cursor (text, FALSE);
1424 gtk_text_set_selection (GTK_EDITABLE(text),
1425 text->cursor_mark.index,
1426 text->cursor_mark.index);
1428 editable->has_selection = FALSE;
1429 if (gdk_selection_owner_get (GDK_SELECTION_PRIMARY) == widget->window)
1430 gtk_selection_owner_set (NULL, GDK_SELECTION_PRIMARY, event->time);
1438 gtk_text_button_release (GtkWidget *widget,
1439 GdkEventButton *event)
1442 GtkEditable *editable;
1443 g_return_val_if_fail (widget != NULL, FALSE);
1444 g_return_val_if_fail (GTK_IS_TEXT (widget), FALSE);
1445 g_return_val_if_fail (event != NULL, FALSE);
1447 text = GTK_TEXT (widget);
1449 gtk_grab_remove (widget);
1451 if (text->button != event->button)
1458 gtk_timeout_remove (text->timer);
1462 if (event->button == 1)
1464 text = GTK_TEXT (widget);
1465 editable = GTK_EDITABLE (widget);
1467 gtk_grab_remove (widget);
1469 editable->has_selection = FALSE;
1470 if (editable->selection_start_pos != editable->selection_end_pos)
1472 if (gtk_selection_owner_set (widget,
1473 GDK_SELECTION_PRIMARY,
1475 editable->has_selection = TRUE;
1477 gtk_text_update_text (editable, editable->selection_start_pos,
1478 editable->selection_end_pos);
1482 if (gdk_selection_owner_get (GDK_SELECTION_PRIMARY) == widget->window)
1483 gtk_selection_owner_set (NULL, GDK_SELECTION_PRIMARY, event->time);
1486 else if (event->button == 3)
1488 gtk_grab_remove (widget);
1491 undraw_cursor (text, FALSE);
1492 find_cursor (text, TRUE);
1493 draw_cursor (text, FALSE);
1499 gtk_text_motion_notify (GtkWidget *widget,
1500 GdkEventMotion *event)
1505 GdkModifierType mask;
1507 g_return_val_if_fail (widget != NULL, FALSE);
1508 g_return_val_if_fail (GTK_IS_TEXT (widget), FALSE);
1509 g_return_val_if_fail (event != NULL, FALSE);
1511 text = GTK_TEXT (widget);
1515 mask = event->state;
1516 if (event->is_hint || (text->text_area != event->window))
1518 gdk_window_get_pointer (text->text_area, &x, &y, &mask);
1521 if ((text->button == 0) ||
1522 !(mask & (GDK_BUTTON1_MASK | GDK_BUTTON3_MASK)))
1525 gdk_window_get_size (text->text_area, NULL, &height);
1527 if ((y < 0) || (y > height))
1529 if (text->timer == 0)
1531 text->timer = gtk_timeout_add (SCROLL_TIME,
1532 gtk_text_scroll_timeout,
1536 scroll_int (text, y/2);
1538 scroll_int (text, (y - height)/2);
1544 undraw_cursor (GTK_TEXT (widget), FALSE);
1545 find_mouse_cursor (GTK_TEXT (widget), x, y);
1546 draw_cursor (GTK_TEXT (widget), FALSE);
1548 gtk_text_set_selection (GTK_EDITABLE(text),
1549 GTK_EDITABLE(text)->selection_start_pos,
1550 text->cursor_mark.index);
1556 gtk_text_insert_1_at_point (GtkText* text, gchar key)
1558 gtk_text_insert (text,
1559 MARK_CURRENT_FONT (&text->point),
1560 MARK_CURRENT_FORE (&text->point),
1561 MARK_CURRENT_BACK (&text->point),
1566 gtk_text_insert_text (GtkEditable *editable,
1567 const gchar *new_text,
1568 gint new_text_length,
1571 GtkText *text = GTK_TEXT (editable);
1573 gtk_text_set_point (text, *position);
1574 gtk_text_insert (text,
1575 MARK_CURRENT_FONT (&text->point),
1576 MARK_CURRENT_FORE (&text->point),
1577 MARK_CURRENT_BACK (&text->point),
1578 new_text, new_text_length);
1580 *position = text->point.index;
1584 gtk_text_delete_text (GtkEditable *editable,
1588 GtkText *text = GTK_TEXT (editable);
1590 gtk_text_set_point (text, start_pos);
1592 end_pos = TEXT_LENGTH (text);
1594 if (end_pos > start_pos)
1595 gtk_text_forward_delete (text, end_pos - start_pos);
1599 gtk_text_key_press (GtkWidget *widget,
1603 GtkEditable *editable;
1607 g_return_val_if_fail (widget != NULL, FALSE);
1608 g_return_val_if_fail (GTK_IS_TEXT (widget), FALSE);
1609 g_return_val_if_fail (event != NULL, FALSE);
1613 text = GTK_TEXT (widget);
1614 editable = GTK_EDITABLE (widget);
1616 key = event->keyval;
1619 if ((GTK_EDITABLE(text)->editable == FALSE) || !text->has_cursor)
1621 switch (event->keyval)
1624 if (event->state & GDK_CONTROL_MASK)
1625 scroll_int (text, -text->vadj->value);
1628 if (event->state & GDK_CONTROL_MASK)
1629 scroll_int (text, +text->vadj->upper);
1631 case GDK_Page_Up: scroll_int (text, -text->vadj->page_increment); break;
1632 case GDK_Page_Down: scroll_int (text, +text->vadj->page_increment); break;
1633 case GDK_Up: scroll_int (text, -KEY_SCROLL_PIXELS); break;
1634 case GDK_Down: scroll_int (text, +KEY_SCROLL_PIXELS); break;
1636 if (event->state & GDK_CONTROL_MASK)
1637 gtk_signal_emit_by_name (GTK_OBJECT (text), "activate");
1646 gint extend_selection;
1648 guint initial_pos = editable->current_pos;
1650 text->point = find_mark (text, text->cursor_mark.index);
1652 extend_selection = event->state & GDK_SHIFT_MASK;
1653 extend_start = FALSE;
1655 if (extend_selection)
1657 editable->has_selection = TRUE;
1659 if (editable->selection_start_pos == editable->selection_end_pos)
1661 editable->selection_start_pos = text->point.index;
1662 editable->selection_end_pos = text->point.index;
1665 extend_start = (text->point.index == editable->selection_start_pos);
1668 switch (event->keyval)
1671 if (event->state & GDK_CONTROL_MASK)
1672 move_cursor_buffer_ver (text, -1);
1674 gtk_text_move_beginning_of_line (text);
1677 if (event->state & GDK_CONTROL_MASK)
1678 move_cursor_buffer_ver (text, +1);
1680 gtk_text_move_end_of_line (text);
1682 case GDK_Page_Up: move_cursor_page_ver (text, -1); break;
1683 case GDK_Page_Down: move_cursor_page_ver (text, +1); break;
1684 /* CUA has Ctrl-Up/Ctrl-Down as paragraph up down */
1685 case GDK_Up: move_cursor_ver (text, -1); break;
1686 case GDK_Down: move_cursor_ver (text, +1); break;
1688 if (event->state & GDK_CONTROL_MASK)
1689 gtk_text_move_backward_word (text);
1691 move_cursor_hor (text, -1);
1694 if (event->state & GDK_CONTROL_MASK)
1695 gtk_text_move_forward_word (text);
1697 move_cursor_hor (text, +1);
1701 if (event->state & GDK_CONTROL_MASK)
1702 gtk_text_delete_backward_word (text);
1704 gtk_text_delete_backward_character (text);
1707 gtk_text_delete_line (text);
1710 if (event->state & GDK_SHIFT_MASK)
1712 extend_selection = FALSE;
1713 gtk_editable_paste_clipboard (editable, event->time);
1715 else if (event->state & GDK_CONTROL_MASK)
1717 gtk_editable_copy_clipboard (editable, event->time);
1721 /* gtk_toggle_insert(text) -- IMPLEMENT */
1725 if (event->state & GDK_CONTROL_MASK)
1726 gtk_text_delete_forward_word (text);
1727 else if (event->state & GDK_SHIFT_MASK)
1729 extend_selection = FALSE;
1730 gtk_editable_cut_clipboard (editable, event->time);
1733 gtk_text_delete_forward_character (text);
1736 gtk_text_insert_1_at_point (text, '\t');
1737 gtk_editable_changed (editable);
1740 if (event->state & GDK_CONTROL_MASK)
1741 gtk_signal_emit_by_name (GTK_OBJECT (text), "activate");
1744 gtk_text_insert_1_at_point (text, '\n');
1745 gtk_editable_changed (editable);
1749 /* Don't insert literally */
1756 if (event->state & GDK_CONTROL_MASK)
1758 if ((key >= 'A') && (key <= 'Z'))
1761 if ((key >= 'a') && (key <= 'z') && control_keys[(int) (key - 'a')])
1763 (* control_keys[(int) (key - 'a')]) (editable, event->time);
1769 else if (event->state & GDK_MOD1_MASK)
1771 if ((key >= 'A') && (key <= 'Z'))
1774 if ((key >= 'a') && (key <= 'z') && alt_keys[(int) (key - 'a')])
1776 (* alt_keys[(int) (key - 'a')]) (editable, event->time);
1782 else if (event->length > 0)
1784 extend_selection = FALSE;
1786 if (event->length == 1)
1788 gtk_editable_delete_selection (editable);
1789 gtk_text_insert_1_at_point (text, event->string[0]);
1790 gtk_editable_changed (editable);
1799 if (return_val && (editable->current_pos != initial_pos))
1801 if (extend_selection)
1803 if (editable->current_pos < editable->selection_start_pos)
1804 gtk_text_set_selection (editable, editable->current_pos,
1805 editable->selection_end_pos);
1806 else if (editable->current_pos > editable->selection_end_pos)
1807 gtk_text_set_selection (editable, editable->selection_start_pos,
1808 editable->current_pos);
1812 gtk_text_set_selection (editable, editable->current_pos,
1813 editable->selection_end_pos);
1815 gtk_text_set_selection (editable, editable->selection_start_pos,
1816 editable->current_pos);
1820 gtk_text_set_selection (editable, 0, 0);
1822 gtk_editable_claim_selection (editable,
1823 editable->selection_start_pos != editable->selection_end_pos,
1832 gtk_text_focus_in (GtkWidget *widget,
1833 GdkEventFocus *event)
1835 g_return_val_if_fail (widget != NULL, FALSE);
1836 g_return_val_if_fail (GTK_IS_TEXT (widget), FALSE);
1837 g_return_val_if_fail (event != NULL, FALSE);
1839 TDEBUG (("in gtk_text_focus_in\n"));
1841 GTK_WIDGET_SET_FLAGS (widget, GTK_HAS_FOCUS);
1842 gtk_widget_draw_focus (widget);
1845 if (GTK_EDITABLE(widget)->ic)
1846 gdk_im_begin (GTK_EDITABLE(widget)->ic, GTK_TEXT(widget)->text_area);
1849 draw_cursor (GTK_TEXT(widget), TRUE);
1855 gtk_text_focus_out (GtkWidget *widget,
1856 GdkEventFocus *event)
1858 g_return_val_if_fail (widget != NULL, FALSE);
1859 g_return_val_if_fail (GTK_IS_TEXT (widget), FALSE);
1860 g_return_val_if_fail (event != NULL, FALSE);
1862 TDEBUG (("in gtk_text_focus_out\n"));
1864 GTK_WIDGET_UNSET_FLAGS (widget, GTK_HAS_FOCUS);
1865 gtk_widget_draw_focus (widget);
1867 undraw_cursor (GTK_TEXT(widget), TRUE);
1877 gtk_text_adjustment (GtkAdjustment *adjustment,
1880 g_return_if_fail (adjustment != NULL);
1881 g_return_if_fail (GTK_IS_ADJUSTMENT (adjustment));
1882 g_return_if_fail (text != NULL);
1883 g_return_if_fail (GTK_IS_TEXT (text));
1885 if (adjustment == text->hadj)
1887 g_warning ("horizontal scrolling not implemented");
1891 gint diff = ((gint)adjustment->value) - text->last_ver_value;
1895 undraw_cursor (text, FALSE);
1898 scroll_down (text, diff);
1899 else /* if (diff < 0) */
1900 scroll_up (text, diff);
1902 draw_cursor (text, FALSE);
1904 text->last_ver_value = adjustment->value;
1910 gtk_text_disconnect (GtkAdjustment *adjustment,
1913 g_return_if_fail (adjustment != NULL);
1914 g_return_if_fail (GTK_IS_ADJUSTMENT (adjustment));
1915 g_return_if_fail (text != NULL);
1916 g_return_if_fail (GTK_IS_TEXT (text));
1918 if (adjustment == text->hadj)
1920 if (adjustment == text->vadj)
1925 static GtkPropertyMark
1926 find_this_line_start_mark (GtkText* text, guint point_position, const GtkPropertyMark* near)
1928 GtkPropertyMark mark;
1930 mark = find_mark_near (text, point_position, near);
1932 while (mark.index > 0 &&
1933 GTK_TEXT_INDEX (text, mark.index - 1) != LINE_DELIM)
1934 decrement_mark (&mark);
1940 init_tab_cont (GtkText* text, PrevTabCont* tab_cont)
1942 tab_cont->pixel_offset = 0;
1943 tab_cont->tab_start.tab_stops = text->tab_stops;
1944 tab_cont->tab_start.to_next_tab = (gulong) text->tab_stops->data;
1946 if (!tab_cont->tab_start.to_next_tab)
1947 tab_cont->tab_start.to_next_tab = text->default_tab_width;
1951 line_params_iterate (GtkText* text,
1952 const GtkPropertyMark* mark0,
1953 const PrevTabCont* tab_mark0,
1956 LineIteratorFunction iter)
1957 /* mark0 MUST be a real line start. if ALLOC, allocate line params
1958 * from a mem chunk. DATA is passed to ITER_CALL, which is called
1959 * for each line following MARK, iteration continues unless ITER_CALL
1962 GtkPropertyMark mark = *mark0;
1963 PrevTabCont tab_conts[2];
1964 LineParams *lp, lpbuf;
1965 gint tab_cont_index = 0;
1968 tab_conts[0] = *tab_mark0;
1970 init_tab_cont (text, tab_conts);
1975 lp = g_chunk_new (LineParams, params_mem_chunk);
1979 *lp = find_line_params (text, &mark, tab_conts + tab_cont_index,
1980 tab_conts + (tab_cont_index + 1) % 2);
1982 if ((*iter) (text, lp, data))
1985 if (LAST_INDEX (text, lp->end))
1989 advance_mark (&mark);
1990 tab_cont_index = (tab_cont_index + 1) % 2;
1995 fetch_lines_iterator (GtkText* text, LineParams* lp, void* data)
1997 FetchLinesData *fldata = (FetchLinesData*) data;
1999 fldata->new_lines = g_list_prepend (fldata->new_lines, lp);
2001 switch (fldata->fl_type)
2003 case FetchLinesCount:
2004 if (!text->line_wrap || !lp->wraps)
2007 if (fldata->data >= fldata->data_max)
2011 case FetchLinesPixels:
2013 fldata->data += LINE_HEIGHT(*lp);
2015 if (fldata->data >= fldata->data_max)
2025 fetch_lines (GtkText* text,
2026 const GtkPropertyMark* mark0,
2027 const PrevTabCont* tab_cont0,
2031 FetchLinesData fl_data;
2033 fl_data.new_lines = NULL;
2035 fl_data.data_max = data;
2036 fl_data.fl_type = fl_type;
2038 line_params_iterate (text, mark0, tab_cont0, TRUE, &fl_data, fetch_lines_iterator);
2040 return g_list_reverse (fl_data.new_lines);
2044 fetch_lines_backward (GtkText* text)
2046 GList* new_lines = NULL, *new_line_start;
2047 GtkPropertyMark mark;
2049 if (CACHE_DATA(text->line_start_cache).start.index == 0)
2052 mark = find_this_line_start_mark (text,
2053 CACHE_DATA(text->line_start_cache).start.index - 1,
2054 &CACHE_DATA(text->line_start_cache).start);
2056 new_line_start = new_lines = fetch_lines (text, &mark, NULL, FetchLinesCount, 1);
2058 while (new_line_start->next)
2059 new_line_start = new_line_start->next;
2061 new_line_start->next = text->line_start_cache;
2062 text->line_start_cache->prev = new_line_start;
2066 fetch_lines_forward (GtkText* text, gint line_count)
2068 GtkPropertyMark mark;
2069 GList* line = text->line_start_cache;
2074 mark = CACHE_DATA(line).end;
2076 if (LAST_INDEX (text, mark))
2079 advance_mark(&mark);
2081 line->next = fetch_lines (text, &mark, &CACHE_DATA(line).tab_cont_next, FetchLinesCount, line_count);
2084 line->next->prev = line;
2087 /* Compute the number of lines, and vertical pixels for n characters
2088 * starting from the point
2091 compute_lines_pixels (GtkText* text, guint char_count,
2092 guint *lines, guint *pixels)
2094 GList *line = text->current_line;
2095 gint chars_left = char_count;
2100 /* If chars_left == 0, that means we're joining two lines in a
2101 * deletion, so add in the values for the next line as well
2103 for (; line && chars_left >= 0; line = line->next)
2105 *pixels += LINE_HEIGHT(CACHE_DATA(line));
2107 if (line == text->current_line)
2108 chars_left -= CACHE_DATA(line).end.index - text->point.index + 1;
2110 chars_left -= CACHE_DATA(line).end.index - CACHE_DATA(line).start.index + 1;
2112 if (!text->line_wrap || !CACHE_DATA(line).wraps)
2116 chars_left = 0; /* force another loop */
2119 fetch_lines_forward (text, 1);
2124 total_line_height (GtkText* text, GList* line, gint line_count)
2128 for (; line && line_count > 0; line = line->next)
2130 height += LINE_HEIGHT(CACHE_DATA(line));
2132 if (!text->line_wrap || !CACHE_DATA(line).wraps)
2136 fetch_lines_forward (text, line_count);
2143 swap_lines (GtkText* text, GList* old, GList* new, guint old_line_count)
2145 if (old == text->line_start_cache)
2149 for (; old_line_count > 0; old_line_count -= 1)
2151 while (text->line_start_cache &&
2153 CACHE_DATA(text->line_start_cache).wraps)
2154 remove_cache_line(text, text->line_start_cache);
2156 remove_cache_line(text, text->line_start_cache);
2159 last = g_list_last (new);
2161 last->next = text->line_start_cache;
2163 if (text->line_start_cache)
2164 text->line_start_cache->prev = last;
2166 text->line_start_cache = new;
2172 g_assert (old->prev);
2176 for (; old_line_count > 0; old_line_count -= 1)
2178 while (old && text->line_wrap && CACHE_DATA(old).wraps)
2179 old = remove_cache_line (text, old);
2181 old = remove_cache_line (text, old);
2187 last = g_list_last (new);
2197 correct_cache_delete (GtkText* text, gint nchars, gint lines)
2199 GList* cache = text->current_line;
2202 for (i = 0; cache && i < lines; i += 1, cache = cache->next)
2205 for (; cache; cache = cache->next)
2207 GtkPropertyMark *start = &CACHE_DATA(cache).start;
2208 GtkPropertyMark *end = &CACHE_DATA(cache).end;
2210 start->index -= nchars;
2211 end->index -= nchars;
2213 if (LAST_INDEX (text, text->point) &&
2214 start->index == text->point.index)
2215 *start = text->point;
2216 else if (start->property == text->point.property)
2217 start->offset = start->index - (text->point.index - text->point.offset);
2219 if (LAST_INDEX (text, text->point) &&
2220 end->index == text->point.index)
2222 if (end->property == text->point.property)
2223 end->offset = end->index - (text->point.index - text->point.offset);
2225 /*TEXT_ASSERT_MARK(text, start, "start");*/
2226 /*TEXT_ASSERT_MARK(text, end, "end");*/
2231 delete_expose (GtkText* text, guint nchars, guint old_lines, guint old_pixels)
2234 guint new_pixels = 0;
2236 GList* new_line = NULL;
2239 text->cursor_virtual_x = 0;
2241 undraw_cursor (text, FALSE);
2243 correct_cache_delete (text, nchars, old_lines);
2245 pixel_height = pixel_height_of(text, text->current_line) -
2246 LINE_HEIGHT(CACHE_DATA(text->current_line));
2248 if (CACHE_DATA(text->current_line).start.index == text->point.index)
2249 CACHE_DATA(text->current_line).start = text->point;
2251 new_line = fetch_lines (text,
2252 &CACHE_DATA(text->current_line).start,
2253 &CACHE_DATA(text->current_line).tab_cont,
2257 swap_lines (text, text->current_line, new_line, old_lines);
2259 text->current_line = new_line;
2261 new_pixels = total_line_height (text, new_line, 1);
2263 gdk_window_get_size (text->text_area, &width, &height);
2265 if (old_pixels != new_pixels)
2267 gdk_draw_pixmap (text->text_area,
2271 pixel_height + old_pixels,
2273 pixel_height + new_pixels,
2277 text->vadj->upper += new_pixels;
2278 text->vadj->upper -= old_pixels;
2279 adjust_adj (text, text->vadj);
2283 rect.y = pixel_height;
2285 rect.height = new_pixels;
2287 expose_text (text, &rect, FALSE);
2288 gtk_text_draw_focus ( (GtkWidget *) text);
2290 text->cursor_mark = text->point;
2292 find_cursor (text, TRUE);
2294 draw_cursor (text, FALSE);
2296 if (old_pixels != new_pixels)
2297 process_exposes (text);
2303 /* note, the point has already been moved forward */
2305 correct_cache_insert (GtkText* text, gint nchars)
2307 GList* cache = text->current_line->next;
2309 for (; cache; cache = cache->next)
2311 GtkPropertyMark *start = &CACHE_DATA(cache).start;
2312 GtkPropertyMark *end = &CACHE_DATA(cache).end;
2314 if (LAST_INDEX (text, text->point) &&
2315 start->index == text->point.index)
2316 *start = text->point;
2317 else if (start->index >= text->point.index - nchars)
2319 if (start->property == text->point.property)
2320 move_mark_n(start, nchars);
2322 start->index += nchars;
2325 if (LAST_INDEX (text, text->point) &&
2326 end->index == text->point.index)
2328 if (end->index >= text->point.index - nchars)
2330 if (end->property == text->point.property)
2331 move_mark_n(end, nchars);
2333 end->index += nchars;
2336 /*TEXT_ASSERT_MARK(text, start, "start");*/
2337 /*TEXT_ASSERT_MARK(text, end, "end");*/
2343 insert_expose (GtkText* text, guint old_pixels, gint nchars,
2344 guint new_line_count)
2347 guint new_pixels = 0;
2349 GList* new_lines = NULL;
2352 text->cursor_virtual_x = 0;
2354 undraw_cursor (text, FALSE);
2356 correct_cache_insert (text, nchars);
2358 TEXT_SHOW_ADJ (text, text->vadj, "vadj");
2360 pixel_height = pixel_height_of(text, text->current_line) -
2361 LINE_HEIGHT(CACHE_DATA(text->current_line));
2363 new_lines = fetch_lines (text,
2364 &CACHE_DATA(text->current_line).start,
2365 &CACHE_DATA(text->current_line).tab_cont,
2369 swap_lines (text, text->current_line, new_lines, 1);
2371 text->current_line = new_lines;
2373 new_pixels = total_line_height (text, new_lines, new_line_count);
2375 gdk_window_get_size (text->text_area, &width, &height);
2377 if (old_pixels != new_pixels)
2379 gdk_draw_pixmap (text->text_area,
2383 pixel_height + old_pixels,
2385 pixel_height + new_pixels,
2387 height + (old_pixels - new_pixels) - pixel_height);
2389 text->vadj->upper += new_pixels;
2390 text->vadj->upper -= old_pixels;
2391 adjust_adj (text, text->vadj);
2395 rect.y = pixel_height;
2397 rect.height = new_pixels;
2399 expose_text (text, &rect, FALSE);
2400 gtk_text_draw_focus ( (GtkWidget *) text);
2402 text->cursor_mark = text->point;
2404 find_cursor (text, TRUE);
2406 draw_cursor (text, FALSE);
2408 if (old_pixels != new_pixels)
2409 process_exposes (text);
2411 TEXT_SHOW_ADJ (text, text->vadj, "vadj");
2417 font_hash (gpointer font)
2419 return gdk_font_id ((GdkFont*) font);
2423 get_text_font (GdkFont* gfont)
2425 static GHashTable *font_cache_table = NULL;
2430 if (!font_cache_table)
2431 font_cache_table = g_hash_table_new (font_hash, (GCompareFunc) gdk_font_equal);
2433 lu = g_hash_table_lookup (font_cache_table, gfont);
2436 return (TextFont*)lu;
2438 tf = g_new (TextFont, 1);
2440 tf->gdk_font = gfont;
2442 for(i = 0; i < 256; i += 1)
2443 tf->char_widths[i] = gdk_char_width (gfont, (char)i);
2445 g_hash_table_insert (font_cache_table, gfont, tf);
2451 text_properties_equal (TextProperty* prop, GdkFont* font, GdkColor *fore, GdkColor *back)
2453 return prop->font == get_text_font(font) &&
2454 gdk_color_equal(&prop->fore_color, fore) &&
2455 gdk_color_equal(&prop->back_color, back);
2458 static TextProperty*
2459 new_text_property (GdkFont* font, GdkColor* fore, GdkColor* back, guint length)
2463 if (text_property_chunk == NULL)
2465 text_property_chunk = g_mem_chunk_new ("text property mem chunk",
2466 sizeof(TextProperty),
2467 1024*sizeof(TextProperty),
2471 prop = g_chunk_new(TextProperty, text_property_chunk);
2473 prop->font = get_text_font (font);
2474 prop->fore_color = *fore;
2476 prop->back_color = *back;
2477 prop->length = length;
2482 /* Flop the memory between the point and the gap around like a
2485 move_gap_to_point (GtkText* text)
2487 if (text->gap_position < text->point.index)
2489 gint diff = text->point.index - text->gap_position;
2491 g_memmove (text->text + text->gap_position,
2492 text->text + text->gap_position + text->gap_size,
2495 text->gap_position = text->point.index;
2497 else if (text->gap_position > text->point.index)
2499 gint diff = text->gap_position - text->point.index;
2501 g_memmove (text->text + text->point.index + text->gap_size,
2502 text->text + text->point.index,
2505 text->gap_position = text->point.index;
2509 /* Increase the gap size. */
2511 make_forward_space (GtkText* text, guint len)
2513 if (text->gap_size < len)
2515 guint sum = MAX(2*len, MIN_GAP_SIZE) + text->text_end;
2517 if (sum >= text->text_len)
2521 while (i <= sum) i <<= 1;
2523 text->text = (guchar*)g_realloc(text->text, i);
2526 g_memmove (text->text + text->gap_position + text->gap_size + 2*len,
2527 text->text + text->gap_position + text->gap_size,
2528 text->text_end - (text->gap_position + text->gap_size));
2530 text->text_end += len*2;
2531 text->gap_size += len*2;
2535 /* Inserts into the text property list a list element that guarantees
2536 * that for len characters following the point, text has the correct
2537 * property. does not move point. adjusts text_properties_point and
2538 * text_properties_point_offset relative to the current value of
2541 insert_text_property (GtkText* text, GdkFont* font,
2542 GdkColor *fore, GdkColor* back, guint len)
2544 GtkPropertyMark *mark = &text->point;
2545 TextProperty* forward_prop = MARK_CURRENT_PROPERTY(mark);
2546 TextProperty* backward_prop = MARK_PREV_PROPERTY(mark);
2548 if (MARK_OFFSET(mark) == 0)
2550 /* Point is on the boundary of two properties.
2551 * If it is the same as either, grow, else insert
2554 if (text_properties_equal(forward_prop, font, fore, back))
2556 /* Grow the property in front of us. */
2558 MARK_PROPERTY_LENGTH(mark) += len;
2560 else if (backward_prop &&
2561 text_properties_equal(backward_prop, font, fore, back))
2563 /* Grow property behind us, point property and offset
2566 SET_PROPERTY_MARK (&text->point,
2567 MARK_PREV_LIST_PTR (mark),
2568 backward_prop->length);
2570 backward_prop->length += len;
2572 else if ((MARK_NEXT_LIST_PTR(mark) == NULL) &&
2573 (forward_prop->length == 1))
2575 /* Next property just has last position, take it over */
2576 forward_prop->font = get_text_font (font);
2577 forward_prop->fore_color = *fore;
2578 forward_prop->back_color = *back;
2579 forward_prop->length += len;
2583 /* Splice a new property into the list. */
2585 GList* new_prop = g_list_alloc();
2587 new_prop->next = MARK_LIST_PTR(mark);
2588 new_prop->prev = MARK_PREV_LIST_PTR(mark);
2589 new_prop->next->prev = new_prop;
2592 new_prop->prev->next = new_prop;
2594 new_prop->data = new_text_property (font, fore, back, len);
2596 SET_PROPERTY_MARK (mark, new_prop, 0);
2601 /* In the middle of forward_prop, if properties are equal,
2602 * just add to its length, else split it into two and splice
2604 if (text_properties_equal (forward_prop, font, fore, back))
2606 forward_prop->length += len;
2608 else if ((MARK_NEXT_LIST_PTR(mark) == NULL) &&
2609 (MARK_OFFSET(mark) + 1 == forward_prop->length))
2611 /* Inserting before only the last position in the text */
2614 forward_prop->length -= 1;
2616 new_prop = g_list_alloc();
2617 new_prop->data = new_text_property (font, fore, back, len+1);
2618 new_prop->prev = MARK_LIST_PTR(mark);
2619 new_prop->next = NULL;
2620 MARK_NEXT_LIST_PTR(mark) = new_prop;
2622 SET_PROPERTY_MARK (mark, new_prop, 0);
2626 GList* new_prop = g_list_alloc();
2627 GList* new_prop_forward = g_list_alloc();
2628 gint old_length = forward_prop->length;
2629 GList* next = MARK_NEXT_LIST_PTR(mark);
2631 /* Set the new lengths according to where they are split. Construct
2632 * two new properties. */
2633 forward_prop->length = MARK_OFFSET(mark);
2635 new_prop_forward->data = new_text_property(forward_prop->font->gdk_font,
2636 &forward_prop->fore_color,
2637 &forward_prop->back_color,
2638 old_length - forward_prop->length);
2640 new_prop->data = new_text_property(font, fore, back, len);
2642 /* Now splice things in. */
2643 MARK_NEXT_LIST_PTR(mark) = new_prop;
2644 new_prop->prev = MARK_LIST_PTR(mark);
2646 new_prop->next = new_prop_forward;
2647 new_prop_forward->prev = new_prop;
2649 new_prop_forward->next = next;
2652 next->prev = new_prop_forward;
2654 SET_PROPERTY_MARK (mark, new_prop, 0);
2658 while (text->text_properties_end->next)
2659 text->text_properties_end = text->text_properties_end->next;
2661 while (text->text_properties->prev)
2662 text->text_properties = text->text_properties->prev;
2666 delete_text_property (GtkText* text, guint nchars)
2668 /* Delete nchars forward from point. */
2673 for(; nchars; nchars -= 1)
2675 prop = MARK_CURRENT_PROPERTY(&text->point);
2679 if (prop->length == 0)
2681 tmp = MARK_LIST_PTR (&text->point);
2683 is_first = tmp == text->text_properties;
2685 MARK_LIST_PTR (&text->point) = g_list_remove_link (tmp, tmp);
2686 text->point.offset = 0;
2688 g_mem_chunk_free (text_property_chunk, prop);
2689 g_list_free_1 (tmp);
2691 prop = MARK_CURRENT_PROPERTY (&text->point);
2694 text->text_properties = MARK_LIST_PTR (&text->point);
2696 g_assert (prop->length != 0);
2698 else if (prop->length == text->point.offset)
2700 MARK_LIST_PTR (&text->point) = MARK_NEXT_LIST_PTR (&text->point);
2701 text->point.offset = 0;
2705 /* Check to see if we have just the single final position remaining
2706 * along in a property; if so, combine it with the previous property
2708 if (LAST_INDEX (text, text->point) &&
2709 (MARK_OFFSET (&text->point) == 0) &&
2710 (MARK_PREV_LIST_PTR(&text->point) != NULL))
2712 tmp = MARK_LIST_PTR (&text->point);
2713 prop = MARK_CURRENT_PROPERTY(&text->point);
2715 MARK_LIST_PTR (&text->point) = MARK_PREV_LIST_PTR (&text->point);
2716 MARK_CURRENT_PROPERTY(&text->point)->length += 1;
2717 MARK_NEXT_LIST_PTR(&text->point) = NULL;
2719 text->point.offset = MARK_CURRENT_PROPERTY(&text->point)->length - 1;
2721 g_mem_chunk_free (text_property_chunk, prop);
2722 g_list_free_1 (tmp);
2727 init_properties (GtkText *text)
2729 GtkWidget *widget = (GtkWidget *)text;
2731 if (!text->text_properties)
2733 text->text_properties = g_list_alloc();
2734 text->text_properties->next = NULL;
2735 text->text_properties->prev = NULL;
2736 text->text_properties->data = new_text_property (widget->style->font,
2737 &widget->style->text[GTK_STATE_NORMAL],
2738 &widget->style->base[GTK_STATE_NORMAL],
2740 text->text_properties_end = text->text_properties;
2742 SET_PROPERTY_MARK (&text->point, text->text_properties, 0);
2744 text->point.index = 0;
2749 /**********************************************************************/
2750 /* Property Movement */
2751 /**********************************************************************/
2754 move_mark_n (GtkPropertyMark* mark, gint n)
2757 advance_mark_n(mark, n);
2759 decrement_mark_n(mark, -n);
2763 advance_mark_n (GtkPropertyMark* mark, gint n)
2769 for (i = 0; i < n; i += 1)
2770 advance_mark (mark);
2774 advance_mark (GtkPropertyMark* mark)
2776 TextProperty* prop = MARK_CURRENT_PROPERTY (mark);
2780 if (prop->length > mark->offset + 1)
2784 mark->property = MARK_NEXT_LIST_PTR (mark);
2790 decrement_mark (GtkPropertyMark* mark)
2794 if (mark->offset > 0)
2798 mark->property = MARK_PREV_LIST_PTR (mark);
2799 mark->offset = MARK_CURRENT_PROPERTY (mark)->length - 1;
2804 decrement_mark_n (GtkPropertyMark* mark, gint n)
2810 for (i = 0; i < n; i += 1)
2811 decrement_mark (mark);
2814 static GtkPropertyMark
2815 find_mark (GtkText* text, guint mark_position)
2817 return find_mark_near (text, mark_position, &text->point);
2820 /* This can be optimized in two ways.
2821 * First, advances can be made in units of the current TextProperty
2822 * length, when possible. This will reduce computation and function
2825 * You can also start from the end, what a drag.
2827 static GtkPropertyMark
2828 find_mark_near (GtkText* text, guint mark_position, const GtkPropertyMark* near)
2833 GtkPropertyMark mark;
2836 diffa = mark_position + 1;
2838 diffa = mark_position - near->index;
2840 diffb = mark_position;
2852 mark.property = text->text_properties;
2856 if (mark.index > mark_position)
2858 while (mark.index > mark_position)
2859 decrement_mark (&mark);
2863 while (mark_position > mark.index)
2864 advance_mark (&mark);
2870 /* This routine must be called with scroll == FALSE, only when
2871 * point is at least partially on screen
2875 find_line_containing_point (GtkText* text, guint point,
2881 text->current_line = NULL;
2883 if (!text->line_start_cache->next)
2885 /* @@@ Its visible, right? */
2886 text->current_line = text->line_start_cache;
2890 while ( ( scroll && (text->first_cut_pixels != 0) &&
2891 (CACHE_DATA(text->line_start_cache->next).start.index > point) ) ||
2892 ( (text->first_cut_pixels == 0) &&
2893 (CACHE_DATA(text->line_start_cache).start.index > point) ) )
2895 scroll_int (text, - SCROLL_PIXELS);
2896 g_assert (text->line_start_cache->next);
2900 gdk_window_get_size (text->text_area, NULL, &height);
2902 for (cache = text->line_start_cache; cache; cache = cache->next)
2906 if (CACHE_DATA(cache).end.index >= point ||
2907 LAST_INDEX(text, CACHE_DATA(cache).end))
2909 text->current_line = cache; /* LOOK HERE, this proc has an
2910 * important side effect. */
2914 TEXT_SHOW_LINE (text, cache, "cache");
2916 if (cache->next == NULL)
2917 fetch_lines_forward (text, 1);
2921 lph = pixel_height_of (text, cache->next);
2923 while (lph > height || lph == 0)
2925 TEXT_SHOW_LINE (text, cache, "cache");
2926 TEXT_SHOW_LINE (text, cache->next, "cache->next");
2927 scroll_int (text, LINE_HEIGHT(CACHE_DATA(cache->next)));
2928 lph = pixel_height_of (text, cache->next);
2933 g_assert_not_reached (); /* Must set text->current_line here */
2937 pixel_height_of (GtkText* text, GList* cache_line)
2939 gint pixels = - text->first_cut_pixels;
2940 GList *cache = text->line_start_cache;
2943 pixels += LINE_HEIGHT (CACHE_DATA(cache));
2945 if (cache->data == cache_line->data)
2948 cache = cache->next;
2954 /**********************************************************************/
2955 /* Search and Placement */
2956 /**********************************************************************/
2959 find_char_width (GtkText* text, const GtkPropertyMark *mark, const TabStopMark *tab_mark)
2961 gchar ch = GTK_TEXT_INDEX (text, mark->index);
2962 gint16* char_widths = MARK_CURRENT_TEXT_FONT (mark)->char_widths;
2966 return tab_mark->to_next_tab * char_widths[' '];
2970 return char_widths[ch & 0xff];
2975 advance_tab_mark (GtkText* text, TabStopMark* tab_mark, gchar ch)
2977 if (tab_mark->to_next_tab == 1 || ch == '\t')
2979 if (tab_mark->tab_stops->next)
2981 tab_mark->tab_stops = tab_mark->tab_stops->next;
2982 tab_mark->to_next_tab = (gulong) tab_mark->tab_stops->data;
2986 tab_mark->to_next_tab = text->default_tab_width;
2991 tab_mark->to_next_tab -= 1;
2996 advance_tab_mark_n (GtkText* text, TabStopMark* tab_mark, gint n)
3000 advance_tab_mark (text, tab_mark, 0);
3004 find_cursor_at_line (GtkText* text, const LineParams* start_line, gint pixel_height)
3007 GtkEditable *editable = (GtkEditable *)text;
3009 GtkPropertyMark mark = start_line->start;
3010 TabStopMark tab_mark = start_line->tab_cont.tab_start;
3011 gint pixel_width = LINE_START_PIXEL (*start_line);
3013 while (mark.index < text->cursor_mark.index)
3015 pixel_width += find_char_width (text, &mark, &tab_mark);
3017 advance_tab_mark (text, &tab_mark, GTK_TEXT_INDEX(text, mark.index));
3018 advance_mark (&mark);
3021 text->cursor_pos_x = pixel_width;
3022 text->cursor_pos_y = pixel_height;
3023 text->cursor_char_offset = start_line->font_descent;
3024 text->cursor_mark = mark;
3026 ch = LAST_INDEX (text, mark) ?
3027 LINE_DELIM : GTK_TEXT_INDEX (text, mark.index);
3030 text->cursor_char = ch;
3032 text->cursor_char = 0;
3035 if (gdk_im_ready() && editable->ic &&
3036 gdk_ic_get_style (editable->ic) & GdkIMPreeditPosition)
3040 spot.x = text->cursor_pos_x;
3041 spot.y = text->cursor_pos_y - text->cursor_char_offset;
3042 if (MARK_CURRENT_FONT (&mark)->type == GDK_FONT_FONTSET)
3043 gdk_ic_set_attr (editable->ic, "preeditAttributes",
3044 "fontSet", GDK_FONT_XFONT (MARK_CURRENT_FONT (&mark)),
3047 gdk_ic_set_attr (editable->ic, "preeditAttributes",
3048 "spotLocation", &spot,
3049 "lineSpace", LINE_HEIGHT (*start_line),
3050 "foreground", MARK_CURRENT_FORE (&mark)->pixel,
3051 "background", MARK_CURRENT_BACK (&mark)->pixel,
3058 find_cursor (GtkText* text, gboolean scroll)
3060 if (!text->has_cursor)
3063 find_line_containing_point (text, text->cursor_mark.index, scroll);
3065 g_assert (text->cursor_mark.index >= text->first_line_start_index);
3067 if (text->current_line)
3068 find_cursor_at_line (text,
3069 &CACHE_DATA(text->current_line),
3070 pixel_height_of(text, text->current_line));
3072 GTK_EDITABLE (text)->current_pos = text->cursor_mark.index;
3076 find_mouse_cursor_at_line (GtkText *text, const LineParams* lp,
3077 guint line_pixel_height,
3080 GtkPropertyMark mark = lp->start;
3081 TabStopMark tab_mark = lp->tab_cont.tab_start;
3083 gint char_width = find_char_width(text, &mark, &tab_mark);
3084 gint pixel_width = LINE_START_PIXEL (*lp) + (char_width+1)/2;
3086 text->cursor_pos_y = line_pixel_height;
3090 gchar ch = LAST_INDEX (text, mark) ?
3091 LINE_DELIM : GTK_TEXT_INDEX (text, mark.index);
3093 if (button_x < pixel_width || mark.index == lp->end.index)
3095 text->cursor_pos_x = pixel_width - (char_width+1)/2;
3096 text->cursor_mark = mark;
3097 text->cursor_char_offset = lp->font_descent;
3100 text->cursor_char = ch;
3102 text->cursor_char = 0;
3107 advance_tab_mark (text, &tab_mark, ch);
3108 advance_mark (&mark);
3110 pixel_width += char_width/2;
3112 char_width = find_char_width (text, &mark, &tab_mark);
3114 pixel_width += (char_width+1)/2;
3119 find_mouse_cursor (GtkText* text, gint x, gint y)
3122 GList* cache = text->line_start_cache;
3126 pixel_height = - text->first_cut_pixels;
3128 text->has_cursor = 1;
3130 for (; cache; cache = cache->next)
3132 pixel_height += LINE_HEIGHT(CACHE_DATA(cache));
3134 if (y < pixel_height || !cache->next)
3136 find_mouse_cursor_at_line (text, &CACHE_DATA(cache), pixel_height, x);
3138 find_cursor (text, FALSE);
3145 /**********************************************************************/
3147 /**********************************************************************/
3150 free_cache (GtkText* text)
3152 GList* cache = text->line_start_cache;
3154 for (; cache; cache = cache->next)
3155 g_mem_chunk_free (params_mem_chunk, cache->data);
3157 g_list_free (text->line_start_cache);
3159 text->line_start_cache = NULL;
3163 remove_cache_line (GtkText* text, GList* member)
3165 if (member == text->line_start_cache)
3167 if (text->line_start_cache)
3168 text->line_start_cache = text->line_start_cache->next;
3169 return text->line_start_cache;
3173 GList *list = member->prev;
3175 list->next = list->next->next;
3177 list->next->prev = list;
3179 member->next = NULL;
3180 g_mem_chunk_free (params_mem_chunk, member->data);
3181 g_list_free (member);
3187 /**********************************************************************/
3189 /**********************************************************************/
3192 move_cursor_buffer_ver (GtkText *text, int dir)
3194 undraw_cursor (text, FALSE);
3198 scroll_int (text, text->vadj->upper);
3199 text->cursor_mark = find_this_line_start_mark (text,
3201 &text->cursor_mark);
3205 scroll_int (text, - text->vadj->value);
3206 text->cursor_mark = find_this_line_start_mark (text,
3208 &text->cursor_mark);
3211 find_cursor (text, TRUE);
3212 draw_cursor (text, FALSE);
3216 move_cursor_page_ver (GtkText *text, int dir)
3218 scroll_int (text, dir * text->vadj->page_increment);
3222 move_cursor_ver (GtkText *text, int count)
3225 GtkPropertyMark mark;
3228 if (!text->has_cursor)
3230 scroll_int (text, count * KEY_SCROLL_PIXELS);
3234 mark = find_this_line_start_mark (text, text->cursor_mark.index, &text->cursor_mark);
3235 offset = text->cursor_mark.index - mark.index;
3237 if (offset > text->cursor_virtual_x)
3238 text->cursor_virtual_x = offset;
3242 if (mark.index == 0)
3245 decrement_mark (&mark);
3246 mark = find_this_line_start_mark (text, mark.index, &mark);
3250 mark = text->cursor_mark;
3252 while (!LAST_INDEX(text, mark) && GTK_TEXT_INDEX(text, mark.index) != LINE_DELIM)
3253 advance_mark (&mark);
3255 if (LAST_INDEX(text, mark))
3258 advance_mark (&mark);
3261 for (i=0; i < text->cursor_virtual_x; i += 1, advance_mark(&mark))
3262 if (LAST_INDEX(text, mark) || GTK_TEXT_INDEX(text, mark.index) == LINE_DELIM)
3265 undraw_cursor (text, FALSE);
3267 text->cursor_mark = mark;
3269 find_cursor (text, TRUE);
3271 draw_cursor (text, FALSE);
3275 move_cursor_hor (GtkText *text, int count)
3277 /* count should be +-1. */
3278 if (!text->has_cursor)
3281 if ( (count > 0 && text->cursor_mark.index + count > TEXT_LENGTH(text)) ||
3282 (count < 0 && text->cursor_mark.index < (- count)) ||
3286 text->cursor_virtual_x = 0;
3288 undraw_cursor (text, FALSE);
3290 move_mark_n (&text->cursor_mark, count);
3292 find_cursor (text, TRUE);
3294 draw_cursor (text, FALSE);
3298 gtk_text_move_forward_character (GtkText *text)
3300 move_cursor_hor (text, 1);
3304 gtk_text_move_backward_character (GtkText *text)
3306 move_cursor_hor (text, -1);
3310 gtk_text_move_next_line (GtkText *text)
3312 move_cursor_ver (text, 1);
3316 gtk_text_move_previous_line (GtkText *text)
3318 move_cursor_ver (text, -1);
3322 gtk_text_move_forward_word (GtkText *text)
3324 text->cursor_virtual_x = 0;
3326 undraw_cursor (text, FALSE);
3328 while (!LAST_INDEX (text, text->cursor_mark) &&
3329 !isalnum (GTK_TEXT_INDEX(text, text->cursor_mark.index)))
3330 advance_mark (&text->cursor_mark);
3332 while (!LAST_INDEX (text, text->cursor_mark) &&
3333 isalnum (GTK_TEXT_INDEX(text, text->cursor_mark.index)))
3334 advance_mark (&text->cursor_mark);
3336 find_cursor (text, TRUE);
3337 draw_cursor (text, FALSE);
3341 gtk_text_move_backward_word (GtkText *text)
3343 text->cursor_virtual_x = 0;
3345 undraw_cursor (text, FALSE);
3347 while ((text->cursor_mark.index > 0) &&
3348 !isalnum (GTK_TEXT_INDEX(text, text->cursor_mark.index-1)))
3349 decrement_mark (&text->cursor_mark);
3351 while ((text->cursor_mark.index > 0) &&
3352 isalnum (GTK_TEXT_INDEX(text, text->cursor_mark.index-1)))
3353 decrement_mark (&text->cursor_mark);
3355 find_cursor (text, TRUE);
3356 draw_cursor (text, FALSE);
3360 gtk_text_move_beginning_of_line (GtkText *text)
3362 text->cursor_virtual_x = 0;
3364 undraw_cursor (text, FALSE);
3366 while ((text->cursor_mark.index > 0) &&
3367 (GTK_TEXT_INDEX (text, text->cursor_mark.index - 1) != LINE_DELIM))
3368 decrement_mark (&text->cursor_mark);
3370 find_cursor (text, TRUE);
3371 draw_cursor (text, FALSE);
3375 gtk_text_move_end_of_line (GtkText *text)
3377 text->cursor_virtual_x = 0;
3379 undraw_cursor (text, FALSE);
3381 while (!LAST_INDEX (text, text->cursor_mark) &&
3382 (GTK_TEXT_INDEX (text, text->cursor_mark.index) != LINE_DELIM))
3383 advance_mark (&text->cursor_mark);
3385 find_cursor (text, TRUE);
3386 draw_cursor (text, FALSE);
3390 gtk_text_delete_forward_character (GtkText *text)
3392 GtkEditable *editable;
3393 editable = GTK_EDITABLE (text);
3395 if (editable->selection_start_pos != editable->selection_end_pos)
3396 gtk_editable_delete_selection (editable);
3399 gtk_text_forward_delete (text, 1);
3400 gtk_editable_changed (editable);
3405 gtk_text_delete_backward_character (GtkText *text)
3407 GtkEditable *editable;
3408 editable = GTK_EDITABLE (text);
3410 if (editable->selection_start_pos != editable->selection_end_pos)
3411 gtk_editable_delete_selection (editable);
3414 gtk_text_backward_delete (text, 1);
3415 gtk_editable_changed (editable);
3420 gtk_text_delete_forward_word (GtkText *text)
3424 GtkEditable *editable;
3425 editable = GTK_EDITABLE (text);
3427 if (editable->selection_start_pos != editable->selection_end_pos)
3428 gtk_editable_delete_selection (editable);
3431 old_pos = text->cursor_mark.index;
3432 gtk_text_move_forward_word (text);
3433 gtk_text_set_point (text, text->cursor_mark.index);
3434 gtk_text_backward_delete (text, text->cursor_mark.index - old_pos);
3435 gtk_editable_changed (editable);
3440 gtk_text_delete_backward_word (GtkText *text)
3444 GtkEditable *editable;
3445 editable = GTK_EDITABLE (text);
3447 if (editable->selection_start_pos != editable->selection_end_pos)
3448 gtk_editable_delete_selection (editable);
3451 old_pos = text->point.index;
3452 gtk_text_move_backward_word (text);
3453 gtk_text_set_point (text, text->cursor_mark.index);
3454 gtk_text_forward_delete (text, old_pos - text->cursor_mark.index);
3455 gtk_editable_changed (editable);
3460 gtk_text_delete_line (GtkText *text)
3465 gtk_text_move_beginning_of_line (text);
3466 start_pos = text->cursor_mark.index;
3468 gtk_text_move_end_of_line (text);
3469 gtk_text_move_forward_character (text);
3470 end_pos = text->cursor_mark.index;
3472 gtk_text_set_point (text, start_pos);
3473 gtk_text_forward_delete (text, end_pos - start_pos);
3475 gtk_editable_changed (GTK_EDITABLE (text));
3479 gtk_text_delete_to_line_end (GtkText *text)
3484 start_pos = text->cursor_mark.index;
3486 gtk_text_move_end_of_line (text);
3488 if (start_pos == text->cursor_mark.index)
3489 gtk_text_move_forward_character (text);
3490 end_pos = text->cursor_mark.index;
3492 gtk_text_set_point (text, start_pos);
3493 gtk_text_forward_delete (text, end_pos - start_pos);
3495 gtk_editable_changed (GTK_EDITABLE (text));
3499 gtk_text_select_word (GtkText *text, guint32 time)
3504 GtkEditable *editable;
3505 editable = GTK_EDITABLE (text);
3507 gtk_text_move_backward_word (text);
3508 start_pos = text->cursor_mark.index;
3510 gtk_text_move_forward_word (text);
3511 end_pos = text->cursor_mark.index;
3513 editable->has_selection = TRUE;
3514 gtk_text_set_selection (editable, start_pos, end_pos);
3515 gtk_editable_claim_selection (editable, start_pos != end_pos, time);
3519 gtk_text_select_line (GtkText *text, guint32 time)
3524 GtkEditable *editable;
3525 editable = GTK_EDITABLE (text);
3527 gtk_text_move_beginning_of_line (text);
3528 start_pos = text->cursor_mark.index;
3530 gtk_text_move_end_of_line (text);
3531 gtk_text_move_forward_character (text);
3532 end_pos = text->cursor_mark.index;
3534 editable->has_selection = TRUE;
3535 gtk_text_set_selection (editable, start_pos, end_pos);
3536 gtk_editable_claim_selection (editable, start_pos != end_pos, time);
3539 /**********************************************************************/
3541 /**********************************************************************/
3544 adjust_adj (GtkText* text, GtkAdjustment* adj)
3548 gdk_window_get_size (text->text_area, NULL, &height);
3550 adj->step_increment = MIN (adj->upper, (float) SCROLL_PIXELS);
3551 adj->page_increment = MIN (adj->upper, height - (float) KEY_SCROLL_PIXELS);
3552 adj->page_size = MIN (adj->upper, height);
3553 adj->value = MIN (adj->value, adj->upper - adj->page_size);
3554 adj->value = MAX (adj->value, 0.0);
3556 gtk_signal_emit_by_name (GTK_OBJECT (adj), "changed");
3560 set_vertical_scroll_iterator (GtkText* text, LineParams* lp, void* data)
3562 gint *pixel_count = (gint*) data;
3564 if (text->first_line_start_index == lp->start.index)
3565 text->vadj->value = (float) *pixel_count;
3567 *pixel_count += LINE_HEIGHT (*lp);
3573 set_vertical_scroll_find_iterator (GtkText* text, LineParams* lp, void* data)
3575 SetVerticalScrollData *svdata = (SetVerticalScrollData *) data;
3578 if (svdata->last_didnt_wrap)
3579 svdata->last_line_start = lp->start.index;
3581 if (svdata->pixel_height <= (gint) text->vadj->value &&
3582 svdata->pixel_height + LINE_HEIGHT(*lp) > (gint) text->vadj->value)
3584 svdata->mark = lp->start;
3586 text->first_cut_pixels = (gint)text->vadj->value - svdata->pixel_height;
3587 text->first_onscreen_ver_pixel = svdata->pixel_height;
3588 text->first_line_start_index = svdata->last_line_start;
3594 svdata->pixel_height += LINE_HEIGHT (*lp);
3600 svdata->last_didnt_wrap = TRUE;
3602 svdata->last_didnt_wrap = FALSE;
3607 static GtkPropertyMark
3608 set_vertical_scroll (GtkText* text)
3610 GtkPropertyMark mark = find_mark (text, 0);
3611 SetVerticalScrollData data;
3613 gint pixel_count = 0;
3616 line_params_iterate (text, &mark, NULL, FALSE, &pixel_count, set_vertical_scroll_iterator);
3618 text->vadj->upper = (float) pixel_count;
3619 orig_value = (gint) text->vadj->value;
3621 gdk_window_get_size (text->text_area, NULL, &height);
3623 text->vadj->step_increment = MIN (text->vadj->upper, (float) SCROLL_PIXELS);
3624 text->vadj->page_increment = MIN (text->vadj->upper, height - (float) KEY_SCROLL_PIXELS);
3625 text->vadj->page_size = MIN (text->vadj->upper, height);
3626 text->vadj->value = MIN (text->vadj->value, text->vadj->upper - text->vadj->page_size);
3627 text->vadj->value = MAX (text->vadj->value, 0.0);
3629 text->last_ver_value = (gint)text->vadj->value;
3630 text->first_cut_pixels = 0;
3632 gtk_signal_emit_by_name (GTK_OBJECT (text->vadj), "changed");
3634 if (text->vadj->value != orig_value)
3636 /* We got clipped, and don't really know which line to put first. */
3637 data.pixel_height = 0;
3638 data.last_didnt_wrap = TRUE;
3640 line_params_iterate (text, &mark, NULL,
3642 set_vertical_scroll_find_iterator);
3648 return find_mark (text, text->first_line_start_index);
3653 scroll_int (GtkText* text, gint diff)
3657 text->vadj->value += diff;
3659 upper = text->vadj->upper - text->vadj->page_size;
3660 text->vadj->value = MIN (text->vadj->value, upper);
3661 text->vadj->value = MAX (text->vadj->value, 0.0);
3663 gtk_signal_emit_by_name (GTK_OBJECT (text->vadj), "value_changed");
3667 process_exposes (GtkText *text)
3671 /* Make sure graphics expose events are processed before scrolling
3674 while ((event = gdk_event_get_graphics_expose (text->text_area)) != NULL)
3676 gtk_widget_event (GTK_WIDGET (text), event);
3677 if (event->expose.count == 0)
3679 gdk_event_free (event);
3682 gdk_event_free (event);
3686 static gint last_visible_line_height (GtkText* text)
3688 GList *cache = text->line_start_cache;
3691 gdk_window_get_size (text->text_area, NULL, &height);
3693 for (; cache->next; cache = cache->next)
3694 if (pixel_height_of(text, cache->next) > height)
3698 return pixel_height_of(text, cache) - 1;
3703 static gint first_visible_line_height (GtkText* text)
3705 if (text->first_cut_pixels)
3706 return pixel_height_of(text, text->line_start_cache) + 1;
3712 scroll_down (GtkText* text, gint diff0)
3718 text->first_onscreen_ver_pixel += diff0;
3722 g_assert (text->line_start_cache &&
3723 text->line_start_cache->next);
3725 if (text->first_cut_pixels < LINE_HEIGHT(CACHE_DATA(text->line_start_cache)) - 1)
3727 text->first_cut_pixels += 1;
3731 text->first_cut_pixels = 0;
3733 text->line_start_cache = text->line_start_cache->next;
3735 text->first_line_start_index =
3736 CACHE_DATA(text->line_start_cache).start.index;
3738 if (!text->line_start_cache->next)
3739 fetch_lines_forward (text, 1);
3745 gdk_window_get_size (text->text_area, &width, &height);
3746 if (height > real_diff)
3747 gdk_draw_pixmap (text->text_area,
3755 height - real_diff);
3758 rect.y = MAX (0, height - real_diff);
3760 rect.height = MIN (height, real_diff);
3762 expose_text (text, &rect, FALSE);
3763 gtk_text_draw_focus ( (GtkWidget *) text);
3765 if (text->current_line)
3769 text->cursor_pos_y -= real_diff;
3770 cursor_min = drawn_cursor_min(text);
3773 find_mouse_cursor (text, text->cursor_pos_x,
3774 first_visible_line_height (text));
3777 if (height > real_diff)
3778 process_exposes (text);
3782 scroll_up (GtkText* text, gint diff0)
3788 text->first_onscreen_ver_pixel += diff0;
3792 g_assert (text->line_start_cache);
3794 if (text->first_cut_pixels > 0)
3796 text->first_cut_pixels -= 1;
3800 if (!text->line_start_cache->prev)
3801 fetch_lines_backward (text);
3803 text->line_start_cache = text->line_start_cache->prev;
3805 text->first_line_start_index =
3806 CACHE_DATA(text->line_start_cache).start.index;
3808 text->first_cut_pixels = LINE_HEIGHT(CACHE_DATA(text->line_start_cache)) - 1;
3814 gdk_window_get_size (text->text_area, &width, &height);
3815 if (height > real_diff)
3816 gdk_draw_pixmap (text->text_area,
3824 height - real_diff);
3829 rect.height = MIN (height, real_diff);
3831 expose_text (text, &rect, FALSE);
3832 gtk_text_draw_focus ( (GtkWidget *) text);
3834 if (text->current_line)
3839 text->cursor_pos_y += real_diff;
3840 cursor_max = drawn_cursor_max(text);
3841 gdk_window_get_size (text->text_area, NULL, &height);
3843 if (cursor_max >= height)
3844 find_mouse_cursor (text, text->cursor_pos_x,
3845 last_visible_line_height (text));
3848 if (height > real_diff)
3849 process_exposes (text);
3852 /**********************************************************************/
3854 /**********************************************************************/
3856 /* Assumes mark starts a line. Calculates the height, width, and
3857 * displayable character count of a single DISPLAYABLE line. That
3858 * means that in line-wrap mode, this does may not compute the
3859 * properties of an entire line. */
3861 find_line_params (GtkText* text,
3862 const GtkPropertyMark* mark,
3863 const PrevTabCont *tab_cont,
3864 PrevTabCont *next_cont)
3867 TabStopMark tab_mark = tab_cont->tab_start;
3868 guint max_display_pixels;
3873 gdk_window_get_size (text->text_area, (gint*) &max_display_pixels, NULL);
3874 max_display_pixels -= LINE_WRAP_ROOM;
3877 lp.tab_cont = *tab_cont;
3880 lp.pixel_width = tab_cont->pixel_offset;
3881 lp.displayable_chars = 0;
3883 lp.font_descent = 0;
3885 init_tab_cont (text, next_cont);
3887 while (!LAST_INDEX(text, lp.end))
3889 g_assert (lp.end.property);
3891 ch = GTK_TEXT_INDEX (text, lp.end.index);
3892 font = MARK_CURRENT_FONT (&lp.end);
3894 if (ch == LINE_DELIM)
3896 /* Newline doesn't count in computation of line height, even
3897 * if its in a bigger font than the rest of the line. Unless,
3898 * of course, there are no other characters. */
3900 if (!lp.font_ascent && !lp.font_descent)
3902 lp.font_ascent = font->ascent;
3903 lp.font_descent = font->descent;
3906 lp.tab_cont_next = *next_cont;
3911 ch_width = find_char_width (text, &lp.end, &tab_mark);
3913 if (ch_width + lp.pixel_width > max_display_pixels)
3917 if (text->line_wrap)
3919 next_cont->tab_start = tab_mark;
3920 next_cont->pixel_offset = 0;
3924 /* Here's the tough case, a tab is wrapping. */
3925 gint pixels_avail = max_display_pixels - lp.pixel_width;
3926 gint space_width = MARK_CURRENT_TEXT_FONT(&lp.end)->char_widths[' '];
3927 gint spaces_avail = pixels_avail / space_width;
3929 if (spaces_avail == 0)
3931 decrement_mark (&lp.end);
3935 advance_tab_mark (text, &next_cont->tab_start, '\t');
3936 next_cont->pixel_offset = space_width * (tab_mark.to_next_tab -
3938 lp.displayable_chars += 1;
3943 /* Don't include this character, it will wrap. */
3944 decrement_mark (&lp.end);
3947 lp.tab_cont_next = *next_cont;
3954 lp.displayable_chars += 1;
3957 lp.font_ascent = MAX (font->ascent, lp.font_ascent);
3958 lp.font_descent = MAX (font->descent, lp.font_descent);
3959 lp.pixel_width += ch_width;
3961 advance_mark(&lp.end);
3962 advance_tab_mark (text, &tab_mark, ch);
3965 if (LAST_INDEX(text, lp.start))
3967 /* Special case, empty last line. */
3968 font = MARK_CURRENT_FONT (&lp.end);
3970 lp.font_ascent = font->ascent;
3971 lp.font_descent = font->descent;
3974 lp.tab_cont_next = *next_cont;
3980 expand_scratch_buffer (GtkText* text, guint len)
3982 if (len >= text->scratch_buffer_len)
3986 while (i <= len && i < MIN_GAP_SIZE) i <<= 1;
3988 if (text->scratch_buffer)
3989 text->scratch_buffer = g_new (guchar, i);
3991 text->scratch_buffer = g_realloc (text->scratch_buffer, i);
3993 text->scratch_buffer_len = i;
3997 /* Returns a GC to draw a background for the text at a mark,
3998 * or NULL, if the mark's background is NULL
4000 * Side effect: modifies text->gc
4003 mark_bg_gc (GtkText* text, const GtkPropertyMark *mark)
4005 GtkEditable *editable = GTK_EDITABLE(text);
4007 if ((mark->index >= MIN(editable->selection_start_pos, editable->selection_end_pos) &&
4008 mark->index < MAX(editable->selection_start_pos, editable->selection_end_pos)))
4010 if (editable->has_selection)
4011 return GTK_WIDGET(text)->style->bg_gc[GTK_STATE_SELECTED];
4013 return GTK_WIDGET(text)->style->bg_gc[GTK_STATE_ACTIVE];
4015 else if (!gdk_color_equal(MARK_CURRENT_BACK (mark),
4016 >K_WIDGET(text)->style->base[GTK_STATE_NORMAL]))
4019 gdk_gc_set_foreground (text->gc, MARK_CURRENT_BACK (mark));
4026 draw_line (GtkText* text,
4027 gint pixel_start_height,
4030 GdkGCValues gc_values;
4033 guint running_offset = lp->tab_cont.pixel_offset;
4035 GdkGC *fg_gc, *bg_gc;
4037 GtkEditable *editable = GTK_EDITABLE(text);
4039 guint selection_start_pos = MIN (editable->selection_start_pos, editable->selection_end_pos);
4040 guint selection_end_pos = MAX (editable->selection_start_pos, editable->selection_end_pos);
4042 GtkPropertyMark mark = lp->start;
4043 TabStopMark tab_mark = lp->tab_cont.tab_start;
4044 gint pixel_height = pixel_start_height + lp->font_ascent;
4045 guint chars = lp->displayable_chars;
4047 /* First provide a contiguous segment of memory. This makes reading
4048 * the code below *much* easier, and only incurs the cost of copying
4049 * when the line being displayed spans the gap. */
4050 if (mark.index <= text->gap_position &&
4051 mark.index + chars > text->gap_position)
4053 expand_scratch_buffer (text, chars);
4055 for (i = 0; i < chars; i += 1)
4056 text->scratch_buffer[i] = GTK_TEXT_INDEX(text, mark.index + i);
4058 buffer = text->scratch_buffer;
4062 if (mark.index >= text->gap_position)
4063 buffer = text->text + mark.index + text->gap_size;
4065 buffer = text->text + mark.index;
4069 if (running_offset > 0)
4071 bg_gc = mark_bg_gc (text, &mark);
4074 gdk_draw_rectangle (text->text_area,
4081 else if (!editable->editable &&
4082 GTK_WIDGET (text)->style->bg_pixmap[GTK_STATE_NORMAL])
4087 rect.y = pixel_start_height;
4088 rect.width = running_offset;
4089 rect.height = LINE_HEIGHT (*lp);
4091 clear_area (text, &rect);
4095 for (; chars > 0; chars -= len, buffer += len, len = 0)
4097 if (buffer[0] != '\t')
4099 guchar* next_tab = memchr (buffer, '\t', chars);
4103 len = MIN (MARK_CURRENT_PROPERTY (&mark)->length - mark.offset, chars);
4106 len = MIN (len, next_tab - buffer);
4108 if (mark.index < selection_start_pos)
4109 len = MIN (len, selection_start_pos - mark.index);
4110 else if (mark.index < selection_end_pos)
4111 len = MIN (len, selection_end_pos - mark.index);
4113 font = MARK_CURRENT_PROPERTY (&mark)->font->gdk_font;
4114 if (font->type == GDK_FONT_FONT)
4116 gdk_gc_set_font (text->gc, font);
4117 gdk_gc_get_values (text->gc, &gc_values);
4118 pixel_width = gdk_text_width (gc_values.font,
4119 (gchar*) buffer, len);
4122 pixel_width = gdk_text_width (font, (gchar*) buffer, len);
4124 bg_gc = mark_bg_gc (text, &mark);
4126 gdk_draw_rectangle (text->text_area,
4133 else if (!editable->editable &&
4134 GTK_WIDGET (text)->style->bg_pixmap[GTK_STATE_NORMAL])
4138 rect.x = running_offset;
4139 rect.y = pixel_start_height;
4140 rect.width = pixel_width;
4141 rect.height = LINE_HEIGHT (*lp);
4143 clear_area (text, &rect);
4146 if ((mark.index >= selection_start_pos) &&
4147 (mark.index < selection_end_pos))
4149 if (editable->has_selection)
4150 fg_gc = GTK_WIDGET(text)->style->fg_gc[GTK_STATE_SELECTED];
4152 fg_gc = GTK_WIDGET(text)->style->fg_gc[GTK_STATE_ACTIVE];
4156 gdk_gc_set_foreground (text->gc, MARK_CURRENT_FORE (&mark));
4160 gdk_draw_text (text->text_area, MARK_CURRENT_FONT (&mark),
4167 running_offset += pixel_width;
4169 advance_tab_mark_n (text, &tab_mark, len);
4175 bg_gc = mark_bg_gc (text, &mark);
4178 gint pixels_remaining;
4182 gdk_window_get_size (text->text_area, &pixels_remaining, NULL);
4183 pixels_remaining -= (LINE_WRAP_ROOM + running_offset);
4185 space_width = MARK_CURRENT_TEXT_FONT(&mark)->char_widths[' '];
4187 spaces_avail = pixels_remaining / space_width;
4188 spaces_avail = MIN (spaces_avail, tab_mark.to_next_tab);
4190 gdk_draw_rectangle (text->text_area,
4195 spaces_avail * space_width,
4199 running_offset += tab_mark.to_next_tab *
4200 MARK_CURRENT_TEXT_FONT(&mark)->char_widths[' '];
4202 advance_tab_mark (text, &tab_mark, '\t');
4205 advance_mark_n (&mark, len);
4210 draw_line_wrap (GtkText* text, guint height /* baseline height */)
4217 if (text->line_wrap)
4219 bitmap = text->line_wrap_bitmap;
4220 bitmap_width = line_wrap_width;
4221 bitmap_height = line_wrap_height;
4225 bitmap = text->line_arrow_bitmap;
4226 bitmap_width = line_arrow_width;
4227 bitmap_height = line_arrow_height;
4230 gdk_window_get_size (text->text_area, &width, NULL);
4231 width -= LINE_WRAP_ROOM;
4233 gdk_gc_set_stipple (text->gc,
4236 gdk_gc_set_fill (text->gc, GDK_STIPPLED);
4238 gdk_gc_set_foreground (text->gc, >K_WIDGET (text)->style->text[GTK_STATE_NORMAL]);
4240 gdk_gc_set_ts_origin (text->gc,
4242 height - bitmap_height - 1);
4244 gdk_draw_rectangle (text->text_area,
4248 height - bitmap_height - 1 /* one pixel above the baseline. */,
4252 gdk_gc_set_ts_origin (text->gc, 0, 0);
4254 gdk_gc_set_fill (text->gc, GDK_SOLID);
4258 undraw_cursor (GtkText* text, gint absolute)
4260 GtkEditable *editable = (GtkEditable *)text;
4262 TDEBUG (("in undraw_cursor\n"));
4265 text->cursor_drawn_level = 0;
4267 if ((text->cursor_drawn_level ++ == 0) &&
4269 (editable->selection_start_pos == editable->selection_end_pos) &&
4270 GTK_WIDGET_DRAWABLE (text))
4274 g_assert(text->cursor_mark.property);
4276 font = MARK_CURRENT_FONT(&text->cursor_mark);
4278 if (GTK_WIDGET (text)->style->bg_pixmap[GTK_STATE_NORMAL] &&
4279 !editable->editable)
4283 rect.x = text->cursor_pos_x;
4284 rect.y = text->cursor_pos_y - text->cursor_char_offset - font->ascent;
4286 rect.height = font->ascent + 1; /* @@@ I add one here because draw_line is inclusive, right? */
4288 clear_area (text, &rect);
4292 gdk_gc_set_foreground (text->gc, MARK_CURRENT_BACK (&text->cursor_mark));
4293 gdk_draw_line (text->text_area, text->gc, text->cursor_pos_x,
4294 text->cursor_pos_y - text->cursor_char_offset, text->cursor_pos_x,
4295 text->cursor_pos_y - text->cursor_char_offset - font->ascent);
4298 if (text->cursor_char)
4300 if (font->type == GDK_FONT_FONT)
4301 gdk_gc_set_font (text->gc, font);
4303 gdk_gc_set_foreground (text->gc, MARK_CURRENT_FORE (&text->cursor_mark));
4305 gdk_draw_text (text->text_area, font,
4308 text->cursor_pos_y - text->cursor_char_offset,
4316 drawn_cursor_min (GtkText* text)
4318 if (text->has_cursor)
4322 g_assert(text->cursor_mark.property);
4324 font = MARK_CURRENT_FONT(&text->cursor_mark);
4326 return text->cursor_pos_y - text->cursor_char_offset - font->ascent;
4333 drawn_cursor_max (GtkText* text)
4335 if (text->has_cursor)
4339 g_assert(text->cursor_mark.property);
4341 font = MARK_CURRENT_FONT(&text->cursor_mark);
4343 return text->cursor_pos_y - text->cursor_char_offset;
4350 draw_cursor (GtkText* text, gint absolute)
4352 GtkEditable *editable = (GtkEditable *)text;
4354 TDEBUG (("in draw_cursor\n"));
4357 text->cursor_drawn_level = 1;
4359 if ((--text->cursor_drawn_level == 0) &&
4361 editable->editable &&
4362 (editable->selection_start_pos == editable->selection_end_pos) &&
4363 GTK_WIDGET_DRAWABLE (text))
4367 g_assert (text->cursor_mark.property);
4369 font = MARK_CURRENT_FONT (&text->cursor_mark);
4371 gdk_gc_set_foreground (text->gc, >K_WIDGET (text)->style->text[GTK_STATE_NORMAL]);
4373 gdk_draw_line (text->text_area, text->gc, text->cursor_pos_x,
4374 text->cursor_pos_y - text->cursor_char_offset,
4376 text->cursor_pos_y - text->cursor_char_offset - font->ascent);
4381 clear_area (GtkText *text, GdkRectangle *area)
4383 GtkWidget *widget = GTK_WIDGET (text);
4385 if (widget->style->bg_pixmap[GTK_STATE_NORMAL] &&
4386 !GTK_EDITABLE(text)->editable)
4389 gint x = area->x, y = area->y;
4392 gdk_window_get_size (widget->style->bg_pixmap[GTK_STATE_NORMAL], &width, &height);
4394 yorig = - text->first_onscreen_ver_pixel;
4395 xorig = - text->first_onscreen_hor_pixel;
4397 for (y = area->y; y < area->y + area->height; )
4399 gint yoff = (y - yorig) % height;
4400 gint yw = MIN(height - yoff, (area->y + area->height) - y);
4402 for (x = area->x; x < area->x + area->width; )
4404 gint xoff = (x - xorig) % width;
4405 gint xw = MIN(width - xoff, (area->x + area->width) - x);
4407 gdk_draw_pixmap (text->text_area,
4409 widget->style->bg_pixmap[GTK_STATE_NORMAL],
4423 gdk_window_clear_area (text->text_area, area->x, area->y, area->width, area->height);
4427 expose_text (GtkText* text, GdkRectangle *area, gboolean cursor)
4429 GList *cache = text->line_start_cache;
4430 gint pixels = - text->first_cut_pixels;
4431 gint min_y = area->y;
4432 gint max_y = area->y + area->height;
4435 gdk_window_get_size (text->text_area, NULL, &height);
4436 max_y = MIN (max_y, height);
4438 TDEBUG (("in expose x=%d y=%d w=%d h=%d\n", area->x, area->y, area->width, area->height));
4440 clear_area (text, area);
4442 for (; pixels < height; cache = cache->next)
4444 if (pixels < max_y && (pixels + LINE_HEIGHT(CACHE_DATA(cache))) >= min_y)
4446 draw_line (text, pixels, &CACHE_DATA(cache));
4448 if (CACHE_DATA(cache).wraps)
4449 draw_line_wrap (text, pixels + CACHE_DATA(cache).font_ascent);
4452 if (cursor && text->has_cursor && GTK_WIDGET_HAS_FOCUS (text))
4454 if (CACHE_DATA(cache).start.index <= text->cursor_mark.index &&
4455 CACHE_DATA(cache).end.index >= text->cursor_mark.index)
4456 draw_cursor (text, TRUE);
4459 pixels += LINE_HEIGHT(CACHE_DATA(cache));
4463 fetch_lines_forward (text, 1);
4472 gtk_text_update_text (GtkEditable *editable,
4476 GtkText *text = GTK_TEXT (editable);
4478 GList *cache = text->line_start_cache;
4479 gint pixels = - text->first_cut_pixels;
4485 end_pos = TEXT_LENGTH (text);
4487 if (end_pos < start_pos)
4490 gdk_window_get_size (text->text_area, &width, &height);
4496 TDEBUG (("in expose span start=%d stop=%d\n", start_pos, end_pos));
4498 for (; pixels < height; cache = cache->next)
4500 if (CACHE_DATA(cache).start.index < end_pos)
4502 if (CACHE_DATA(cache).end.index >= start_pos)
4506 area.height = pixels + LINE_HEIGHT(CACHE_DATA(cache)) - area.y;
4512 pixels += LINE_HEIGHT(CACHE_DATA(cache));
4516 fetch_lines_forward (text, 1);
4524 expose_text (text, &area, TRUE);
4528 recompute_geometry (GtkText* text)
4530 GtkPropertyMark start_mark;
4536 start_mark = set_vertical_scroll (text);
4538 gdk_window_get_size (text->text_area, &width, &height);
4540 text->line_start_cache = fetch_lines (text,
4544 height + text->first_cut_pixels);
4546 find_cursor (text, TRUE);
4549 /**********************************************************************/
4551 /**********************************************************************/
4554 gtk_text_set_selection (GtkEditable *editable,
4558 GtkText *text = GTK_TEXT (editable);
4560 guint start1, end1, start2, end2;
4563 end = TEXT_LENGTH (text);
4565 start1 = MIN(start,end);
4566 end1 = MAX(start,end);
4567 start2 = MIN(editable->selection_start_pos, editable->selection_end_pos);
4568 end2 = MAX(editable->selection_start_pos, editable->selection_end_pos);
4570 if (start2 < start1)
4574 tmp = start1; start1 = start2; start2 = tmp;
4575 tmp = end1; end1 = end2; end2 = tmp;
4578 undraw_cursor (text, FALSE);
4579 editable->selection_start_pos = start;
4580 editable->selection_end_pos = end;
4581 draw_cursor (text, FALSE);
4583 /* Expose only what changed */
4585 if (start1 < start2)
4586 gtk_text_update_text (editable, start1, MIN(end1, start2));
4589 gtk_text_update_text (editable, MAX(end1, start2), end2);
4590 else if (end2 < end1)
4591 gtk_text_update_text (editable, end2, end1);
4595 /**********************************************************************/
4597 /**********************************************************************/
4599 #ifdef DEBUG_GTK_TEXT
4601 gtk_text_show_cache_line (GtkText *text, GList *cache,
4602 const char* what, const char* func, gint line)
4604 LineParams *lp = &CACHE_DATA(cache);
4607 if (cache == text->line_start_cache)
4608 g_print ("Line Start Cache: ");
4610 if (cache == text->current_line)
4611 g_print("Current Line: ");
4613 g_print ("%s:%d: cache line %s s=%d,e=%d,lh=%d (",
4621 for (i = lp->start.index; i < (lp->end.index + lp->wraps); i += 1)
4622 g_print ("%c", GTK_TEXT_INDEX (text, i));
4628 gtk_text_show_cache (GtkText *text, const char* func, gint line)
4630 GList *l = text->line_start_cache;
4636 /* back up to the absolute beginning of the line cache */
4640 g_print ("*** line cache ***\n");
4641 for (; l; l = l->next)
4642 gtk_text_show_cache_line (text, l, "all", func, line);
4646 gtk_text_assert_mark (GtkText *text,
4647 GtkPropertyMark *mark,
4648 GtkPropertyMark *before,
4649 GtkPropertyMark *after,
4654 GtkPropertyMark correct_mark = find_mark (text, mark->index);
4656 if (mark->offset != correct_mark.offset ||
4657 mark->property != correct_mark.property)
4658 g_warning ("incorrect %s text property marker in %s:%d, index %d -- bad!", where, msg, line, mark->index);
4662 gtk_text_assert (GtkText *text,
4666 GList* cache = text->line_start_cache;
4667 GtkPropertyMark* before_mark = NULL;
4668 GtkPropertyMark* after_mark = NULL;
4670 gtk_text_show_props (text, msg, line);
4672 for (; cache->prev; cache = cache->prev)
4675 g_print ("*** line markers ***\n");
4677 for (; cache; cache = cache->next)
4679 after_mark = &CACHE_DATA(cache).end;
4680 gtk_text_assert_mark (text, &CACHE_DATA(cache).start, before_mark, after_mark, msg, "start", line);
4681 before_mark = &CACHE_DATA(cache).start;
4684 after_mark = &CACHE_DATA(cache->next).start;
4688 gtk_text_assert_mark (text, &CACHE_DATA(cache).end, before_mark, after_mark, msg, "end", line);
4689 before_mark = &CACHE_DATA(cache).end;
4694 gtk_text_show_adj (GtkText *text,
4700 g_print ("*** adjustment ***\n");
4702 g_print ("%s:%d: %s adjustment l=%.1f u=%.1f v=%.1f si=%.1f pi=%.1f ps=%.1f\n",
4709 adj->step_increment,
4710 adj->page_increment,
4715 gtk_text_show_props (GtkText *text,
4719 GList* props = text->text_properties;
4722 g_print ("%s:%d: ", msg, line);
4724 for (; props; props = props->next)
4726 TextProperty *p = (TextProperty*)props->data;
4728 proplen += p->length;
4730 g_print ("[%d,%p,%p,%ld,%ld] ", p->length, p, p->font, p->fore_color.pixel, p->back_color.pixel);
4735 if (proplen - 1 != TEXT_LENGTH(text))
4736 g_warning ("incorrect property list length in %s:%d -- bad!", msg, line);