1 /* ATK - The Accessibility Toolkit for GTK+
2 * Copyright 2001 Sun Microsystems Inc.
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
16 * Free Software Foundation, Inc., 59 Temple Place - Suite 330,
17 * Boston, MA 02111-1307, USA.
21 #include "atkmarshal.h"
29 struct _AtkTextIfaceClass
34 typedef struct _AtkTextIfaceClass AtkTextIfaceClass;
36 static void atk_text_base_init (gpointer *g_class);
38 static guint atk_text_signals[LAST_SIGNAL] = { 0 };
43 static GType type = 0;
47 static const GTypeInfo tinfo =
49 sizeof (AtkTextIface),
50 (GBaseInitFunc) atk_text_base_init,
51 (GBaseFinalizeFunc) NULL,
52 (GClassInitFunc) NULL /* atk_text_interface_init */ ,
53 (GClassFinalizeFunc) NULL,
57 type = g_type_register_static (G_TYPE_INTERFACE, "AtkText", &tinfo, 0);
64 atk_text_base_init (gpointer *g_class)
66 static gboolean initialized = FALSE;
71 * Note that text_changed signal supports details "insert", "delete",
75 atk_text_signals[TEXT_CHANGED] =
76 g_signal_new ("text_changed",
78 G_SIGNAL_RUN_LAST | G_SIGNAL_DETAILED,
79 G_STRUCT_OFFSET (AtkTextIface, text_changed),
80 (GSignalAccumulator) NULL, NULL,
81 atk_marshal_VOID__INT_INT,
83 2, G_TYPE_INT, G_TYPE_INT);
85 atk_text_signals[CARET_MOVED] =
86 g_signal_new ("text_caret_moved",
89 G_STRUCT_OFFSET (AtkTextIface, caret_changed),
90 (GSignalAccumulator) NULL, NULL,
91 g_cclosure_marshal_VOID__INT,
102 * @start_offset: start position
103 * @end_offset: end position
105 * Gets the specified text.
107 * Returns: the text from @start_offset up to, but not including @end_offset.
110 atk_text_get_text (AtkText *text,
116 g_return_val_if_fail (ATK_IS_TEXT (text), NULL);
118 iface = ATK_TEXT_GET_IFACE (text);
121 return (*(iface->get_text)) (text, start_offset, end_offset);
127 * atk_text_get_character_at_offset:
131 * Gets the specified text.
133 * Returns: the character at @offset.
136 atk_text_get_character_at_offset (AtkText *text,
141 g_return_val_if_fail (ATK_IS_TEXT (text), (gunichar) 0);
143 iface = ATK_TEXT_GET_IFACE (text);
145 if (iface->get_character_at_offset)
146 return (*(iface->get_character_at_offset)) (text, offset);
152 * atk_text_get_text_after_offset:
155 * @boundary_type: An #AtkTextBoundary
156 * @startOffset: the start offset of the returned string.
157 * @endOffset: the end offset of the returned string.
159 * Gets the specified text.
160 * If the boundary type is ATK_TEXT_BOUNDARY_WORD_START or
161 * ATK_TEXT_BOUNDARY_WORD_END part of a word may be returned.
162 * If the boundary type is ATK_TEXT_BOUNDARY_SENTENCE_START the start point
163 * will be the offset and will continue to the start of the next sentence.
164 * The first word may not be a complete word. Similarly for
165 * ATK_TEXT_BOUNDARY_SENTENCE_END, ATK_TEXT_BOUNDARY_LINE_START and
166 * ATK_TEXT_BOUNDARY_LINE_END
168 * Returns: the text after @offset up to the specified @boundary_type.
171 atk_text_get_text_after_offset (AtkText *text,
173 AtkTextBoundary boundary_type,
179 g_return_val_if_fail (ATK_IS_TEXT (text), NULL);
181 iface = ATK_TEXT_GET_IFACE (text);
183 if (iface->get_text_after_offset)
184 return (*(iface->get_text_after_offset)) (text, offset, boundary_type, startOffset, endOffset);
190 * atk_text_get_text_at_offset:
193 * @boundary_type: An #AtkTextBoundary
194 * @startOffset: the start offset of the returned string.
195 * @endOffset: the end offset of the returned string.
197 * Gets the specified text.
198 * If the boundary_type is ATK_TEXT_BOUNDARY_WORD_START or
199 * ATK_TEXT_BOUNDARY_WORD_END a complete word is returned;
200 * if the boundary type is ATK_TEXT_BOUNDARY_SENTENCE_START or
201 * ATK_TEXT_BOUNDARY_SENTENCE_END a complete sentence
202 * is returned; if the boundary type is ATK_TEXT_BOUNDARY_LINE_START or
203 * ATK_TEXT_BOUNDARY_LINE_END a complete line is returned.
205 * Returns: the text at @offset up to the specified @boundary_type.
208 atk_text_get_text_at_offset (AtkText *text,
210 AtkTextBoundary boundary_type,
216 g_return_val_if_fail (ATK_IS_TEXT (text), NULL);
218 iface = ATK_TEXT_GET_IFACE (text);
220 if (iface->get_text_at_offset)
221 return (*(iface->get_text_at_offset)) (text, offset, boundary_type, startOffset, endOffset);
227 * atk_text_get_text_before_offset:
230 * @boundary_type: An #AtkTextBoundary
231 * @startOffset: the start offset of the returned string.
232 * @endOffset: the end offset of the returned string.
234 * Gets the specified text.
235 * If the boundary type is ATK_TEXT_BOUNDARY_WORD_START or
236 * ATK_TEXT_BOUNDARY_WORD_END part of a word may be returned.
237 * If the boundary type is ATK_TEXT_BOUNDARY_SENTENCE_START the start point
238 * will be at the start of the sentence, and will continue to the offset.
239 * The last word may not be a complete word. Similarly for
240 * ATK_TEXT_BOUNDARY_SENTENCE_END, ATK_TEXT_BOUNDARY_LINE_START and
241 * ATK_TEXT_BOUNDARY_LINE_END
243 * Returns: the text before @offset starting from the specified @boundary_type.
246 atk_text_get_text_before_offset (AtkText *text,
248 AtkTextBoundary boundary_type,
254 g_return_val_if_fail (ATK_IS_TEXT (text), NULL);
256 iface = ATK_TEXT_GET_IFACE (text);
258 if (iface->get_text_before_offset)
259 return (*(iface->get_text_before_offset)) (text, offset, boundary_type, startOffset, endOffset);
265 * atk_text_get_caret_offset:
268 * Gets the offset position of the caret (cursor).
270 * Returns: the offset position of the caret (cursor).
273 atk_text_get_caret_offset (AtkText *text)
277 g_return_val_if_fail (ATK_IS_TEXT (text), -1);
279 iface = ATK_TEXT_GET_IFACE (text);
281 if (iface->get_caret_offset)
282 return (*(iface->get_caret_offset)) (text);
288 * atk_text_get_character_extents:
291 * @x: x-position of character
292 * @y: y-position of character
293 * @width: width of character
294 * @height: height of character
295 * @coords: specify whether coordinates are relative to the screen or widget window
297 * Given an @offset, the @x, @y, @width, and @height values are filled
301 atk_text_get_character_extents (AtkText *text,
311 g_return_if_fail (ATK_IS_TEXT (text));
313 iface = ATK_TEXT_GET_IFACE (text);
315 if (iface->get_character_extents)
316 (*(iface->get_character_extents)) (text, offset, x, y, width, height, coords);
327 *atk_text_ref_run_attributes:
329 *@offset: the offset at which to get the attributes
330 *@start_offset: the address to put the start offset of the range
331 *@end_offset: the address to put the end offset of the range
333 *Creates an #AtkAttributeSet which consists of the attributes explicitly
334 *set at the position @offset in the text. @start_offset and @end_offset are
335 *set to the start and end of the range around @offset where the attributes are
336 *invariant. See the ATK_ATTRIBUTE macros, such as #ATK_ATTRIBUTE_LEFT_MARGIN
337 *for types of text attributes that can be returned. Note that other
338 *attributes that do not have corresponding macros may also be returned.
340 *Returns: an #AtkAttributeSet which contains the attributes explicitly set
343 AtkAttributeSet* atk_text_ref_run_attributes (AtkText *text,
350 g_return_val_if_fail (ATK_IS_TEXT (text), NULL);
352 iface = ATK_TEXT_GET_IFACE (text);
354 if (iface->ref_run_attributes)
355 return (*(iface->ref_run_attributes)) (text, offset, start_offset, end_offset);
361 * atk_text_get_character_count:
364 * Gets the character count.
366 * Returns: the number of characters.
369 atk_text_get_character_count (AtkText *text)
373 g_return_val_if_fail (ATK_IS_TEXT (text), -1);
375 iface = ATK_TEXT_GET_IFACE (text);
377 if (iface->get_character_count)
378 return (*(iface->get_character_count)) (text);
384 * atk_text_get_offset_at_point:
386 * @x: screen x-position of character
387 * @y: screen y-position of character
388 * @coords: specify whether coordinates are relative to the screen or
391 * Gets the offset of the character located at coordinates @x and @y. @x and @y
392 * are interpreted as being relative to the screen or this widget's window
393 * depending on @coords.
395 * Returns: the offset to the character which is located at
396 * the specified @x and @y coordinates.
399 atk_text_get_offset_at_point (AtkText *text,
406 g_return_val_if_fail (ATK_IS_TEXT (text), -1);
408 iface = ATK_TEXT_GET_IFACE (text);
410 if (iface->get_offset_at_point)
411 return (*(iface->get_offset_at_point)) (text, x, y, coords);
417 * atk_text_get_n_selections:
420 * Gets the number of selected regions.
422 * Returns: The number of selected regions, or -1 if a failure
426 atk_text_get_n_selections (AtkText *text)
430 g_return_val_if_fail (ATK_IS_TEXT (text), -1);
432 iface = ATK_TEXT_GET_IFACE (text);
434 if (iface->get_n_selections)
435 return (*(iface->get_n_selections)) (text);
441 * atk_text_get_selection:
443 * @selection_num: The selection number. The selected regions are
444 * assigned numbers that correspond to how far the region is from the
445 * start of the text. The selected region closest to the beginning
446 * of the text region is assigned the number 0, etc. Note that adding,
447 * moving or deleting a selected region can change the numbering.
448 * @start_offset: passes back the start position of the selected region
449 * @end_offset: passes back the end position of the selected region
451 * Gets the text from the specified selection.
453 * Returns: the selected text.
456 atk_text_get_selection (AtkText *text, gint selection_num,
457 gint *start_offset, gint *end_offset)
461 g_return_val_if_fail (ATK_IS_TEXT (text), NULL);
463 iface = ATK_TEXT_GET_IFACE (text);
465 if (iface->get_selection)
467 return (*(iface->get_selection)) (text, selection_num,
468 start_offset, end_offset);
475 * atk_text_add_selection:
477 * @start_offset: the start position of the selected region
478 * @end_offset: the end position of the selected region
480 * Adds a selection bounded by the specified offsets.
482 * Returns: %TRUE if success, %FALSE otherwise
485 atk_text_add_selection (AtkText *text, gint start_offset,
490 g_return_val_if_fail (ATK_IS_TEXT (text), FALSE);
492 iface = ATK_TEXT_GET_IFACE (text);
494 if (iface->add_selection)
495 return (*(iface->add_selection)) (text, start_offset, end_offset);
501 * atk_text_remove_selection:
503 * @selection_num: The selection number. The selected regions are
504 * assigned numbers that correspond to how far the region is from the
505 * start of the text. The selected region closest to the beginning
506 * of the text region is assigned the number 0, etc. Note that adding,
507 * moving or deleting a selected region can change the numbering.
509 * Removes the specified selection.
511 * Returns: %TRUE if success, %FALSE otherwise
514 atk_text_remove_selection (AtkText *text, gint selection_num)
518 g_return_val_if_fail (ATK_IS_TEXT (text), FALSE);
520 iface = ATK_TEXT_GET_IFACE (text);
522 if (iface->remove_selection)
523 return (*(iface->remove_selection)) (text, selection_num);
529 * atk_text_set_selection:
531 * @selection_num: The selection number. The selected regions are
532 * assigned numbers that correspond to how far the region is from the
533 * start of the text. The selected region closest to the beginning
534 * of the text region is assigned the number 0, etc. Note that adding,
535 * moving or deleting a selected region can change the numbering.
536 * @start_offset: the new start position of the selection
537 * @end_offset: the new end position of the selection
539 * Changes the start and end offset of the specified selection.
541 * Returns: %TRUE if success, %FALSE otherwise
544 atk_text_set_selection (AtkText *text, gint selection_num,
545 gint start_offset, gint end_offset)
549 g_return_val_if_fail (ATK_IS_TEXT (text), FALSE);
551 iface = ATK_TEXT_GET_IFACE (text);
553 if (iface->set_selection)
555 return (*(iface->set_selection)) (text, selection_num,
556 start_offset, end_offset);
563 * atk_text_set_caret_offset:
567 * Sets the caret (cursor) position to the specified @offset.
569 * Returns: %TRUE if success, %FALSE otherwise.
572 atk_text_set_caret_offset (AtkText *text,
577 g_return_val_if_fail (ATK_IS_TEXT (text), FALSE);
579 iface = ATK_TEXT_GET_IFACE (text);
581 if (iface->set_caret_offset)
583 return (*(iface->set_caret_offset)) (text, offset);
592 * atk_attribute_set_free:
593 * @attrib_set: The #AtkAttributeSet to free
595 * Frees the memory used by an #AtkAttributeSet, including all its
599 atk_attribute_set_free(AtkAttributeSet *attrib_set)
603 if (attrib_set == NULL)
606 for (index = 0; index < g_slist_length(attrib_set); index++)
608 g_free(((AtkAttribute*) (g_slist_nth(attrib_set,index)->data))->name);
609 g_free(((AtkAttribute*) (g_slist_nth(attrib_set,index)->data))->value);
611 g_slist_free(attrib_set);