* Boston, MA 02111-1307, USA.
*/
-#include "atktext.h"
+#include "config.h"
+
+#include "atk.h"
#include "atkmarshal.h"
-#include "atk-enum-types.h"
#include <string.h>
+/**
+ * SECTION:atktext
+ * @Short_description: The ATK interface implemented by components
+ * with text content.
+ * @Title:AtkText
+ *
+ * #AtkText should be implemented by #AtkObjects on behalf of widgets
+ * that have text content which is either attributed or otherwise
+ * non-trivial. #AtkObjects whose text content is simple,
+ * unattributed, and very brief may expose that content via
+ * #atk_object_get_name instead; however if the text is editable,
+ * multi-line, typically longer than three or four words, attributed,
+ * selectable, or if the object already uses the 'name' ATK property
+ * for other information, the #AtkText interface should be used to
+ * expose the text content. In the case of editable text content,
+ * #AtkEditableText (a subtype of the #AtkText interface) should be
+ * implemented instead.
+ *
+ * #AtkText provides not only traversal facilities and change
+ * notification for text content, but also caret tracking and glyph
+ * bounding box calculations. Note that the text strings are exposed
+ * as UTF-8, and are therefore potentially multi-byte, and
+ * caret-to-byte offset mapping makes no assumptions about the
+ * character length; also bounding box glyph-to-offset mapping may be
+ * complex for languages which use ligatures.
+ */
+
static GPtrArray *extra_attributes = NULL;
enum {
TEXT_ATTRIBUTES_CHANGED,
TEXT_INSERT,
TEXT_REMOVE,
- TEXT_UPDATE,
LAST_SIGNAL
};
class->get_range_extents = atk_text_real_get_range_extents;
class->get_bounded_ranges = atk_text_real_get_bounded_ranges;
+ /**
+ * AtkText::text-changed:
+ * @atktext: the object which received the signal.
+ * @arg1: The position (character offset) of the insertion or deletion.
+ * @arg2: The length (in characters) of text inserted or deleted.
+ *
+ * The "text-changed" signal is emitted when the text of the
+ * object which implements the AtkText interface changes, This
+ * signal will have a detail which is either "insert" or
+ * "delete" which identifies whether the text change was an
+ * insertion or a deletion.
+ *
+ * Deprecated: 2.9.4: Use #AtkObject::text-insert or
+ * #AtkObject::text-remove instead.
+ */
atk_text_signals[TEXT_CHANGED] =
g_signal_new ("text_changed",
ATK_TYPE_TEXT,
G_TYPE_NONE,
2, G_TYPE_INT, G_TYPE_INT);
+ /**
+ * AtkText::text-insert:
+ * @atktext: the object which received the signal.
+ * @arg1: The position (character offset) of the insertion.
+ * @arg2: The length (in characters) of text inserted.
+ * @arg3: The new text inserted
+ *
+ * The "text-insert" signal is emitted when a new text is
+ * inserted. If the signal was not triggered by the user
+ * (e.g. typing or pasting text), the "system" detail should be
+ * included.
+ */
atk_text_signals[TEXT_INSERT] =
g_signal_new ("text_insert",
ATK_TYPE_TEXT,
G_TYPE_NONE,
3, G_TYPE_INT, G_TYPE_INT, G_TYPE_STRING);
+ /**
+ * AtkText::text-remove:
+ * @atktext: the object which received the signal.
+ * @arg1: The position (character offset) of the removal.
+ * @arg2: The length (in characters) of text removed.
+ * @arg3: The old text removed
+ *
+ * The "text-remove" signal is emitted when a new text is
+ * removed. If the signal was not triggered by the user
+ * (e.g. typing or pasting text), the "system" detail should be
+ * included.
+ */
atk_text_signals[TEXT_REMOVE] =
g_signal_new ("text_remove",
ATK_TYPE_TEXT,
G_TYPE_NONE,
3, G_TYPE_INT, G_TYPE_INT, G_TYPE_STRING);
- atk_text_signals[TEXT_UPDATE] =
- g_signal_new ("text_update",
- ATK_TYPE_TEXT,
- G_SIGNAL_RUN_LAST | G_SIGNAL_DETAILED,
- 0,
- (GSignalAccumulator) NULL, NULL,
- atk_marshal_VOID__INT_INT_INT_STRING,
- G_TYPE_NONE,
- 4, G_TYPE_INT, G_TYPE_INT, G_TYPE_INT, G_TYPE_STRING);
-
+ /**
+ * AtkText::text-caret-moved:
+ * @atktext: the object which received the signal.
+ * @arg1: The new position of the text caret.
+ *
+ * The "text-caret-moved" signal is emitted when the caret
+ * position of the text of an object which implements AtkText
+ * changes.
+ */
atk_text_signals[TEXT_CARET_MOVED] =
g_signal_new ("text_caret_moved",
ATK_TYPE_TEXT,
g_cclosure_marshal_VOID__INT,
G_TYPE_NONE,
1, G_TYPE_INT);
+
+ /**
+ * AtkText::text-selection-changed:
+ * @atktext: the object which received the signal.
+ *
+ * The "text-selection-changed" signal is emitted when the
+ * selected text of an object which implements AtkText changes.
+ */
atk_text_signals[TEXT_SELECTION_CHANGED] =
g_signal_new ("text_selection_changed",
ATK_TYPE_TEXT,
(GSignalAccumulator) NULL, NULL,
g_cclosure_marshal_VOID__VOID,
G_TYPE_NONE, 0);
+ /**
+ * AtkText::text-attributes-changed:
+ * @atktext: the object which received the signal.
+ *
+ * The "text-attributes-changed" signal is emitted when the text
+ * attributes of the text of an object which implements AtkText
+ * changes.
+ */
atk_text_signals[TEXT_ATTRIBUTES_CHANGED] =
g_signal_new ("text_attributes_changed",
ATK_TYPE_TEXT,
* atk_text_get_text:
* @text: an #AtkText
* @start_offset: start position
- * @end_offset: end position
+ * @end_offset: end position, or -1 for the end of the string.
*
* Gets the specified text.
*
- * Returns: the text from @start_offset up to, but not including @end_offset.
+ * Returns: a newly allocated string containing the text from @start_offset up
+ * to, but not including @end_offset. Use g_free() to free the returned string.
**/
gchar*
atk_text_get_text (AtkText *text,
iface = ATK_TEXT_GET_IFACE (text);
- if (start_offset < 0 || end_offset < -1)
+ if (start_offset < 0 || end_offset < -1 ||
+ (end_offset != -1 && end_offset < start_offset))
return NULL;
if (iface->get_text)
* @text: an #AtkText
* @offset: position
* @boundary_type: An #AtkTextBoundary
- * @start_offset: the start offset of the returned string
- * @end_offset: the offset of the first character after the
+ * @start_offset: (out): the start offset of the returned string
+ * @end_offset: (out): the offset of the first character after the
* returned substring
*
* Gets the specified text.
*
- * If the boundary_type if ATK_TEXT_BOUNDARY_CHAR the character after the
- * offset is returned.
- *
- * If the boundary_type is ATK_TEXT_BOUNDARY_WORD_START the returned string
- * is from the word start after the offset to the next word start.
- *
- * The returned string will contain the word after the offset if the offset
- * is inside a word or if the offset is not inside a word.
- *
- * If the boundary_type is ATK_TEXT_BOUNDARY_WORD_END the returned string
- * is from the word end at or after the offset to the next work end.
- *
- * The returned string will contain the word after the offset if the offset
- * is inside a word and will contain the word after the word after the offset
- * if the offset is not inside a word.
- *
- * If the boundary type is ATK_TEXT_BOUNDARY_SENTENCE_START the returned
- * string is from the sentence start after the offset to the next sentence
- * start.
- *
- * The returned string will contain the sentence after the offset if the offset
- * is inside a sentence or if the offset is not inside a sentence.
- *
- * If the boundary_type is ATK_TEXT_BOUNDARY_SENTENCE_END the returned string
- * is from the sentence end at or after the offset to the next sentence end.
+ * Deprecated: 2.9.3: Please use atk_text_get_string_at_offset() instead.
*
- * The returned string will contain the sentence after the offset if the offset
- * is inside a sentence and will contain the sentence after the sentence
- * after the offset if the offset is not inside a sentence.
- *
- * If the boundary type is ATK_TEXT_BOUNDARY_LINE_START the returned
- * string is from the line start after the offset to the next line start.
- *
- * If the boundary_type is ATK_TEXT_BOUNDARY_LINE_END the returned string
- * is from the line end at or after the offset to the next line end.
- *
- * Returns: the text after @offset bounded by the specified @boundary_type.
+ * Returns: a newly allocated string containing the text after @offset bounded
+ * by the specified @boundary_type. Use g_free() to free the returned string.
**/
gchar*
atk_text_get_text_after_offset (AtkText *text,
* @text: an #AtkText
* @offset: position
* @boundary_type: An #AtkTextBoundary
- * @start_offset: the start offset of the returned string
- * @end_offset: the offset of the first character after the
+ * @start_offset: (out): the start offset of the returned string
+ * @end_offset: (out): the offset of the first character after the
* returned substring
*
* Gets the specified text.
* offset is returned.
*
* If the boundary_type is ATK_TEXT_BOUNDARY_WORD_START the returned string
- * is from the word start at or before the offset to the word start after
+ * is from the word start at or before the offset to the word start after
* the offset.
*
* The returned string will contain the word at the offset if the offset
- * is inside a word and will contain the word before the offset if the
- * offset is not inside a word.
- *
- * If the boundary_type is ATK_TEXT_BOUNDARY_WORD_END the returned string
- * is from the word end before the offset to the word end at or after the
- * offset.
- *
- * The returned string will contain the word at the offset if the offset
- * is inside a word and will contain the word after to the offset if the
+ * is inside a word and will contain the word before the offset if the
* offset is not inside a word.
*
* If the boundary type is ATK_TEXT_BOUNDARY_SENTENCE_START the returned
* start after the offset.
*
* The returned string will contain the sentence at the offset if the offset
- * is inside a sentence and will contain the sentence before the offset
- * if the offset is not inside a sentence.
- *
- * If the boundary_type is ATK_TEXT_BOUNDARY_SENTENCE_END the returned string
- * is from the sentence end before the offset to the sentence end at or
- * after the offset.
- *
- * The returned string will contain the sentence at the offset if the offset
- * is inside a sentence and will contain the sentence after the offset
+ * is inside a sentence and will contain the sentence before the offset
* if the offset is not inside a sentence.
*
* If the boundary type is ATK_TEXT_BOUNDARY_LINE_START the returned
* string is from the line start at or before the offset to the line
* start after the offset.
*
- * If the boundary_type is ATK_TEXT_BOUNDARY_LINE_END the returned string
- * is from the line end before the offset to the line end at or after
- * the offset.
+ * Deprecated: This method is deprecated since ATK version
+ * 2.9.4. Please use atk_text_get_string_at_offset() instead.
*
- * Returns: the text at @offset bounded by the specified @boundary_type.
+ * Returns: a newly allocated string containing the text at @offset bounded by
+ * the specified @boundary_type. Use g_free() to free the returned string.
**/
gchar*
atk_text_get_text_at_offset (AtkText *text,
* @text: an #AtkText
* @offset: position
* @boundary_type: An #AtkTextBoundary
- * @start_offset: the start offset of the returned string
- * @end_offset: the offset of the first character after the
+ * @start_offset: (out): the start offset of the returned string
+ * @end_offset: (out): the offset of the first character after the
* returned substring
*
* Gets the specified text.
*
- * If the boundary_type if ATK_TEXT_BOUNDARY_CHAR the character before the
- * offset is returned.
- *
- * If the boundary_type is ATK_TEXT_BOUNDARY_WORD_START the returned string
- * is from the word start before the word start before the offset to
- * the word start before the offset.
- *
- * The returned string will contain the word before the offset if the offset
- * is inside a word and will contain the word before the word before the
- * offset if the offset is not inside a word.
- *
- * If the boundary_type is ATK_TEXT_BOUNDARY_WORD_END the returned string
- * is from the word end before the word end at or before the offset to the
- * word end at or before the offset.
- *
- * The returned string will contain the word before the offset if the offset
- * is inside a word or if the offset is not inside a word.
- *
- * If the boundary type is ATK_TEXT_BOUNDARY_SENTENCE_START the returned
- * string is from the sentence start before the sentence start before
- * the offset to the sentence start before the offset.
- *
- * The returned string will contain the sentence before the offset if the
- * offset is inside a sentence and will contain the sentence before the
- * sentence before the offset if the offset is not inside a sentence.
- *
- * If the boundary_type is ATK_TEXT_BOUNDARY_SENTENCE_END the returned string
- * is from the sentence end before the sentence end at or before the offset to
- * the sentence end at or before the offset.
- *
- * The returned string will contain the sentence before the offset if the
- * offset is inside a sentence or if the offset is not inside a sentence.
- *
- * If the boundary type is ATK_TEXT_BOUNDARY_LINE_START the returned
- * string is from the line start before the line start ar or before the offset
- * to the line start ar or before the offset.
- *
- * If the boundary_type is ATK_TEXT_BOUNDARY_LINE_END the returned string
- * is from the line end before the line end before the offset to the
- * line end before the offset.
+ * Deprecated: 2.9.3: Please use atk_text_get_string_at_offset() instead.
*
- * Returns: the text before @offset bounded by the specified @boundary_type.
+ * Returns: a newly allocated string containing the text before @offset bounded
+ * by the specified @boundary_type. Use g_free() to free the returned string.
**/
gchar*
atk_text_get_text_before_offset (AtkText *text,
}
/**
+ * atk_text_get_string_at_offset:
+ * @text: an #AtkText
+ * @offset: position
+ * @granularity: An #AtkTextGranularity
+ * @start_offset: (out): the start offset of the returned string, or -1
+ * if an error has occurred (e.g. invalid offset, not implemented)
+ * @end_offset: (out): the offset of the first character after the returned string,
+ * or -1 if an error has occurred (e.g. invalid offset, not implemented)
+ *
+ * Gets a portion of the text exposed through an #AtkText according to a given @offset
+ * and a specific @granularity, along with the start and end offsets defining the
+ * boundaries of such a portion of text.
+ *
+ * If @granularity is ATK_TEXT_GRANULARITY_CHAR the character at the
+ * offset is returned.
+ *
+ * If @granularity is ATK_TEXT_GRANULARITY_WORD the returned string
+ * is from the word start at or before the offset to the word start after
+ * the offset.
+ *
+ * The returned string will contain the word at the offset if the offset
+ * is inside a word and will contain the word before the offset if the
+ * offset is not inside a word.
+ *
+ * If @granularity is ATK_TEXT_GRANULARITY_SENTENCE the returned string
+ * is from the sentence start at or before the offset to the sentence
+ * start after the offset.
+ *
+ * The returned string will contain the sentence at the offset if the offset
+ * is inside a sentence and will contain the sentence before the offset
+ * if the offset is not inside a sentence.
+ *
+ * If @granularity is ATK_TEXT_GRANULARITY_LINE the returned string
+ * is from the line start at or before the offset to the line
+ * start after the offset.
+ *
+ * If @granularity is ATK_TEXT_GRANULARITY_PARAGRAPH the returned string
+ * is from the start of the paragraph at or before the offset to the start
+ * of the following paragraph after the offset.
+ *
+ * Since: 2.10
+ *
+ * Returns: (nullable): a newly allocated string containing the text
+ * at the @offset bounded by the specified @granularity. Use
+ * g_free() to free the returned string. Returns %NULL if the
+ * offset is invalid or no implementation is available.
+ **/
+gchar* atk_text_get_string_at_offset (AtkText *text,
+ gint offset,
+ AtkTextGranularity granularity,
+ gint *start_offset,
+ gint *end_offset)
+{
+ AtkTextIface *iface;
+ gint local_start_offset, local_end_offset;
+ gint *real_start_offset, *real_end_offset;
+
+ g_return_val_if_fail (ATK_IS_TEXT (text), NULL);
+
+ if (start_offset)
+ {
+ *start_offset = -1;
+ real_start_offset = start_offset;
+ }
+ else
+ real_start_offset = &local_start_offset;
+
+ if (end_offset)
+ {
+ *end_offset = -1;
+ real_end_offset = end_offset;
+ }
+ else
+ real_end_offset = &local_end_offset;
+
+ if (offset < 0)
+ return NULL;
+
+ iface = ATK_TEXT_GET_IFACE (text);
+
+ if (iface->get_string_at_offset)
+ return (*(iface->get_string_at_offset)) (text, offset, granularity, real_start_offset, real_end_offset);
+ else
+ return NULL;
+}
+
+/**
* atk_text_get_caret_offset:
* @text: an #AtkText
*
*@text: an #AtkText
*@offset: the offset at which to get the attributes, -1 means the offset of
*the character to be inserted at the caret location.
- *@start_offset: the address to put the start offset of the range
- *@end_offset: the address to put the end offset of the range
+ *@start_offset: (out): the address to put the start offset of the range
+ *@end_offset: (out): the address to put the end offset of the range
*
*Creates an #AtkAttributeSet which consists of the attributes explicitly
*set at the position @offset in the text. @start_offset and @end_offset are
* start of the text. The selected region closest to the beginning
* of the text region is assigned the number 0, etc. Note that adding,
* moving or deleting a selected region can change the numbering.
- * @start_offset: passes back the start position of the selected region
- * @end_offset: passes back the end position of (e.g. offset immediately past)
+ * @start_offset: (out): passes back the start position of the selected region
+ * @end_offset: (out): passes back the end position of (e.g. offset immediately past)
* the selected region
*
* Gets the text from the specified selection.
*
- * Returns: the selected text.
+ * Returns: a newly allocated string containing the selected text. Use g_free()
+ * to free the returned string.
**/
gchar*
atk_text_get_selection (AtkText *text,
g_return_if_fail (ATK_IS_TEXT (text));
g_return_if_fail (rect);
+ g_return_if_fail (start_offset >= 0 && start_offset < end_offset);
- if (start_offset < 0 || start_offset >= end_offset)
- return;
-
iface = ATK_TEXT_GET_IFACE (text);
if (iface->get_range_extents)
*
* Returns: a string containing the name; this string should not be freed
**/
-G_CONST_RETURN gchar*
+const gchar*
atk_text_attribute_get_name (AtkTextAttribute attr)
{
GTypeClass *type_class;
*
* Gets the value for the index of the #AtkTextAttribute
*
- * Returns: a string containing the value; this string should not be freed;
- * NULL is returned if there are no values maintained for the attr value.
+ * Returns: (nullable): a string containing the value; this string
+ * should not be freed; %NULL is returned if there are no values
+ * maintained for the attr value.
**/
-G_CONST_RETURN gchar*
+const gchar*
atk_text_attribute_get_value (AtkTextAttribute attr,
gint index)
{
/**
* atk_text_free_ranges:
- * @ranges: A pointer to an array of #AtkTextRange which is to be freed.
+ * @ranges: (array): A pointer to an array of #AtkTextRange which is
+ * to be freed.
*
* Frees the memory associated with an array of AtkTextRange. It is assumed
* that the array was returned by the function atk_text_get_bounded_ranges
projects / platform / upstream / atk.git / blobdiff