* 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,
*
* Gets the specified text.
*
- * Deprecated: This method is deprecated since ATK version
- * 2.9.3. Please use atk_text_get_at_offset() instead.
+ * Deprecated: 2.9.3: Please use atk_text_get_string_at_offset() instead.
*
* Returns: a newly allocated string containing the text after @offset bounded
* by the specified @boundary_type. Use g_free() to free the returned string.
* string is from the line start at or before the offset to the line
* start after the offset.
*
+ * Deprecated: This method is deprecated since ATK version
+ * 2.9.4. Please use atk_text_get_string_at_offset() instead.
+ *
* Returns: a newly allocated string containing the text at @offset bounded by
* the specified @boundary_type. Use g_free() to free the returned string.
**/
*
* Gets the specified text.
*
- * Deprecated: This method is deprecated since ATK version
- * 2.9.3. Please use atk_text_get_at_offset() instead.
+ * Deprecated: 2.9.3: Please use atk_text_get_string_at_offset() instead.
*
* Returns: a newly allocated string containing the text before @offset bounded
* by the specified @boundary_type. Use g_free() to free the returned string.
}
/**
+ * 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
*
* atk_text_get_character_extents:
* @text: an #AtkText
* @offset: The offset of the text character for which bounding information is required.
- * @x: Pointer for the x cordinate of the bounding box
- * @y: Pointer for the y cordinate of the bounding box
- * @width: Pointer for the width of the bounding box
- * @height: Pointer for the height of the bounding box
+ * @x: (out) (optional): Pointer for the x cordinate of the bounding box
+ * @y: (out) (optional): Pointer for the y cordinate of the bounding box
+ * @width: (out) (optional): Pointer for the width of the bounding box
+ * @height: (out) (optional): Pointer for the height of the bounding box
* @coords: specify whether coordinates are relative to the screen or widget window
*
* Get the bounding box containing the glyph representing the character at
* @end_offset: The offset of the text character after the last character
* for which boundary information is required.
* @coord_type: Specify whether coordinates are relative to the screen or widget window.
- * @rect: A pointer to a AtkTextRectangle which is filled in by this function.
+ * @rect: (out): A pointer to a AtkTextRectangle which is filled in by this function.
*
* Get the bounding box for text within the specified range.
*
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: (array zero-terminated=1): Array of AtkTextRange. The last
* element of the array returned by this function will be NULL.
- * Virtual: get_bounded_ranges
**/
AtkTextRange**
atk_text_get_bounded_ranges (AtkText *text,
*
* 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.
**/
const gchar*
atk_text_attribute_get_value (AtkTextAttribute attr,