* Boston, MA 02111-1307, USA.
*/
-#include "atktext.h"
+#include "config.h"
+
+#include "atk.h"
+#include "atkmarshal.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_CHANGED,
- CARET_MOVED,
+ TEXT_CARET_MOVED,
+ TEXT_SELECTION_CHANGED,
+ TEXT_ATTRIBUTES_CHANGED,
+ TEXT_INSERT,
+ TEXT_REMOVE,
LAST_SIGNAL
};
-struct _AtkTextIfaceClass
-{
- GObjectClass parent;
+static const char boolean[] =
+ "false\0"
+ "true";
+static const guint8 boolean_offsets[] = {
+ 0, 6
+};
+
+static const char style[] =
+ "normal\0"
+ "oblique\0"
+ "italic";
+static const guint8 style_offsets[] = {
+ 0, 7, 15
+};
+
+static const char variant[] =
+ "normal\0"
+ "small_caps";
+static const guint8 variant_offsets[] = {
+ 0, 7
+};
+
+static const char stretch[] =
+ "ultra_condensed\0"
+ "extra_condensed\0"
+ "condensed\0"
+ "semi_condensed\0"
+ "normal\0"
+ "semi_expanded\0"
+ "expanded\0"
+ "extra_expanded\0"
+ "ultra_expanded";
+static const guint8 stretch_offsets[] = {
+ 0, 16, 32, 42, 57, 64, 78, 87, 102
+};
+
+static const char justification[] =
+ "left\0"
+ "right\0"
+ "center\0"
+ "fill";
+static const guint8 justification_offsets[] = {
+ 0, 5, 11, 18
+};
+
+static const char direction[] =
+ "none\0"
+ "ltr\0"
+ "rtl";
+static const guint8 direction_offsets[] = {
+ 0, 5, 9
+};
+
+static const char wrap_mode[] =
+ "none\0"
+ "char\0"
+ "word\0"
+ "word_char";
+static const guint8 wrap_mode_offsets[] = {
+ 0, 5, 10, 15
};
-typedef struct _AtkTextIfaceClass AtkTextIfaceClass;
+static const char underline[] =
+ "none\0"
+ "single\0"
+ "double\0"
+ "low\0"
+ "error";
+static const guint8 underline_offsets[] = {
+ 0, 5, 12, 19, 23
+};
+
+static void atk_text_base_init (AtkTextIface *class);
+
+static void atk_text_real_get_range_extents (AtkText *text,
+ gint start_offset,
+ gint end_offset,
+ AtkCoordType coord_type,
+ AtkTextRectangle *rect);
-static void atk_text_base_init (gpointer *g_class);
+static AtkTextRange** atk_text_real_get_bounded_ranges (AtkText *text,
+ AtkTextRectangle *rect,
+ AtkCoordType coord_type,
+ AtkTextClipType x_clip_type,
+ AtkTextClipType y_clip_type);
static guint atk_text_signals[LAST_SIGNAL] = { 0 };
GType
-atk_text_get_type ()
+atk_text_get_type (void)
{
static GType type = 0;
}
static void
-atk_text_base_init (gpointer *g_class)
+atk_text_base_init (AtkTextIface *class)
{
static gboolean initialized = FALSE;
-
+
if (! initialized)
{
-
- /*
- * Note that text_changed signal supports details "insert", "delete",
- * possibly "replace".
- */
-
- atk_text_signals[TEXT_CHANGED] =
- g_signal_newc ("text_changed",
- ATK_TYPE_TEXT,
- G_SIGNAL_RUN_LAST | G_SIGNAL_DETAILED,
- G_STRUCT_OFFSET (AtkTextIface, text_changed),
- NULL, NULL,
- g_cclosure_marshal_VOID__VOID,
- G_TYPE_NONE,
- 0, G_TYPE_NONE);
-
- atk_text_signals[CARET_MOVED] =
- g_signal_newc ("text_caret_moved",
- ATK_TYPE_TEXT,
- G_SIGNAL_RUN_LAST,
- G_STRUCT_OFFSET (AtkTextIface, caret_changed),
- NULL, NULL,
- g_cclosure_marshal_VOID__INT,
- G_TYPE_NONE,
- 1, G_TYPE_INT);
- }
+ /*
+ * Note that text_changed signal supports details "insert", "delete",
+ * possibly "replace".
+ */
+
+ 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_SIGNAL_RUN_LAST | G_SIGNAL_DETAILED,
+ G_STRUCT_OFFSET (AtkTextIface, text_changed),
+ (GSignalAccumulator) NULL, NULL,
+ atk_marshal_VOID__INT_INT,
+ 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_SIGNAL_RUN_LAST | G_SIGNAL_DETAILED,
+ 0,
+ (GSignalAccumulator) NULL, NULL,
+ atk_marshal_VOID__INT_INT_STRING,
+ 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_SIGNAL_RUN_LAST | G_SIGNAL_DETAILED,
+ 0,
+ (GSignalAccumulator) NULL, NULL,
+ atk_marshal_VOID__INT_INT_STRING,
+ G_TYPE_NONE,
+ 3, 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_SIGNAL_RUN_LAST,
+ G_STRUCT_OFFSET (AtkTextIface, text_caret_moved),
+ (GSignalAccumulator) NULL, NULL,
+ 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,
+ G_SIGNAL_RUN_LAST,
+ G_STRUCT_OFFSET (AtkTextIface, text_selection_changed),
+ (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,
+ G_SIGNAL_RUN_LAST,
+ G_STRUCT_OFFSET (AtkTextIface, text_attributes_changed),
+ (GSignalAccumulator) NULL, NULL,
+ g_cclosure_marshal_VOID__VOID,
+ G_TYPE_NONE, 0);
+
+
+ initialized = TRUE;
+ }
}
/**
* 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,
gint end_offset)
{
AtkTextIface *iface;
-
- g_return_val_if_fail (text != NULL, NULL);
+
g_return_val_if_fail (ATK_IS_TEXT (text), NULL);
iface = ATK_TEXT_GET_IFACE (text);
+ if (start_offset < 0 || end_offset < -1 ||
+ (end_offset != -1 && end_offset < start_offset))
+ return NULL;
+
if (iface->get_text)
return (*(iface->get_text)) (text, start_offset, end_offset);
else
}
/**
- * atk_text_get_character_at_offset
+ * atk_text_get_character_at_offset:
* @text: an #AtkText
* @offset: position
*
+ * Gets the specified text.
+ *
* Returns: the character at @offset.
**/
gunichar
{
AtkTextIface *iface;
- g_return_val_if_fail (text != NULL, (gunichar) 0);
g_return_val_if_fail (ATK_IS_TEXT (text), (gunichar) 0);
iface = ATK_TEXT_GET_IFACE (text);
}
/**
- * atk_text_get_text_after_offset
+ * atk_text_get_text_after_offset:
* @text: an #AtkText
* @offset: position
* @boundary_type: An #AtkTextBoundary
+ * @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.
+ *
+ * Deprecated: 2.9.3: Please use atk_text_get_string_at_offset() instead.
*
- * Returns: the text after @offset up to the specified @boundary_type.
- * If the boundary type is ATK_TEXT_BOUNDARY_WORD_START or
- * ATK_TEXT_BOUNDARY_WORD_END part of a word may be returned.
- * If the boundary type is ATK_TEXT_BOUNDARY_SENTENCE_START the start point
- * will be the offset and will continue to the start of the next sentence.
- * The first word may not be a complete word. Similarly for
- * ATK_TEXT_BOUNDARY_SENTENCE_END, ATK_TEXT_BOUNDARY_LINE_START and
- * ATK_TEXT_BOUNDARY_LINE_END
+ * 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,
gint offset,
- AtkTextBoundary boundary_type)
+ AtkTextBoundary boundary_type,
+ 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 (text != NULL, NULL);
g_return_val_if_fail (ATK_IS_TEXT (text), NULL);
+ if (start_offset)
+ real_start_offset = start_offset;
+ else
+ real_start_offset = &local_start_offset;
+ if (end_offset)
+ 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_text_after_offset)
- return (*(iface->get_text_after_offset)) (text, offset, boundary_type);
+ return (*(iface->get_text_after_offset)) (text, offset, boundary_type, real_start_offset, real_end_offset);
else
return NULL;
}
/**
- * atk_text_get_text_at_offset
+ * atk_text_get_text_at_offset:
* @text: an #AtkText
* @offset: position
* @boundary_type: An #AtkTextBoundary
+ * @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 at the
+ * offset is returned.
*
- * Returns: the text at @offset up to the specified @boundary_type.
- * If the boundary_type is ATK_TEXT_BOUNDARY_WORD_START or
- * ATK_TEXT_BOUNDARY_WORD_END a complete word is returned;
- * if the boundary type is ATK_TEXT_BOUNDARY_SENTENCE_START or
- * ATK_TEXT_BOUNDARY_SENTENCE_END a complete sentence
- * is returned; if the boundary type is ATK_TEXT_BOUNDARY_LINE_START or
- * ATK_TEXT_BOUNDARY_LINE_END a complete line 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
+ * 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_SENTENCE_START 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 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.
+ *
+ * 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.
**/
gchar*
atk_text_get_text_at_offset (AtkText *text,
gint offset,
- AtkTextBoundary boundary_type)
+ AtkTextBoundary boundary_type,
+ 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 (text != NULL, NULL);
g_return_val_if_fail (ATK_IS_TEXT (text), NULL);
+ if (start_offset)
+ real_start_offset = start_offset;
+ else
+ real_start_offset = &local_start_offset;
+ if (end_offset)
+ real_end_offset = end_offset;
+ else
+ real_end_offset = &local_end_offset;
+
iface = ATK_TEXT_GET_IFACE (text);
if (iface->get_text_at_offset)
- return (*(iface->get_text_at_offset)) (text, offset, boundary_type);
+ return (*(iface->get_text_at_offset)) (text, offset, boundary_type, real_start_offset, real_end_offset);
else
return NULL;
}
/**
- * atk_text_get_text_before_offset
+ * atk_text_get_text_before_offset:
* @text: an #AtkText
* @offset: position
* @boundary_type: An #AtkTextBoundary
+ * @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.
+ *
+ * Deprecated: 2.9.3: Please use atk_text_get_string_at_offset() instead.
*
- * Returns: the text before @offset starting from the specified @boundary_type.
- * If the boundary type is ATK_TEXT_BOUNDARY_WORD_START or
- * ATK_TEXT_BOUNDARY_WORD_END part of a word may be returned.
- * If the boundary type is ATK_TEXT_BOUNDARY_SENTENCE_START the start point
- * will be at the start of the sentence, and will continue to the offset.
- * The last word may not be a complete word. Similarly for
- * ATK_TEXT_BOUNDARY_SENTENCE_END, ATK_TEXT_BOUNDARY_LINE_START and
- * ATK_TEXT_BOUNDARY_LINE_END
+ * 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,
gint offset,
- AtkTextBoundary boundary_type)
+ AtkTextBoundary boundary_type,
+ 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 (text != NULL, NULL);
g_return_val_if_fail (ATK_IS_TEXT (text), NULL);
+ if (start_offset)
+ real_start_offset = start_offset;
+ else
+ real_start_offset = &local_start_offset;
+ if (end_offset)
+ 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_text_before_offset)
- return (*(iface->get_text_before_offset)) (text, offset, boundary_type);
+ return (*(iface->get_text_before_offset)) (text, offset, boundary_type, real_start_offset, real_end_offset);
+ else
+ return NULL;
+}
+
+/**
+ * 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
+ * atk_text_get_caret_offset:
* @text: an #AtkText
*
- * Returns: the position of the caret (cursor).
+ * Gets the offset position of the caret (cursor).
+ *
+ * Returns: the offset position of the caret (cursor).
**/
gint
atk_text_get_caret_offset (AtkText *text)
{
AtkTextIface *iface;
- g_return_val_if_fail (text != NULL, -1);
- g_return_val_if_fail (ATK_IS_TEXT (text), -1);
+ g_return_val_if_fail (ATK_IS_TEXT (text), 0);
iface = ATK_TEXT_GET_IFACE (text);
if (iface->get_caret_offset)
return (*(iface->get_caret_offset)) (text);
else
- return -1;
+ return 0;
}
/**
- * atk_text_get_row_col_at_offset
+ * atk_text_get_character_extents:
* @text: an #AtkText
- * @offset: position
- * @row: row number
- * @col: column number
+ * @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
+ * @coords: specify whether coordinates are relative to the screen or widget window
*
- * Given an @offset, the @row and @col arguments are filled appropriately.
+ * Get the bounding box containing the glyph representing the character at
+ * a particular text offset.
**/
void
-atk_text_get_row_col_at_offset (AtkText *text,
+atk_text_get_character_extents (AtkText *text,
gint offset,
- gint *row,
- gint *col)
+ gint *x,
+ gint *y,
+ gint *width,
+ gint *height,
+ AtkCoordType coords)
{
AtkTextIface *iface;
+ gint local_x, local_y, local_width, local_height;
+ gint *real_x, *real_y, *real_width, *real_height;
- g_return_if_fail (text != NULL);
g_return_if_fail (ATK_IS_TEXT (text));
+ if (x)
+ real_x = x;
+ else
+ real_x = &local_x;
+ if (y)
+ real_y = y;
+ else
+ real_y = &local_y;
+ if (width)
+ real_width = width;
+ else
+ real_width = &local_width;
+ if (height)
+ real_height = height;
+ else
+ real_height = &local_height;
+
+ *real_x = 0;
+ *real_y = 0;
+ *real_width = 0;
+ *real_height = 0;
+
+ if (offset < 0)
+ return;
+
iface = ATK_TEXT_GET_IFACE (text);
- if (iface->get_row_col_at_offset)
- (*(iface->get_row_col_at_offset)) (text, offset, row, col);
- else
+ if (iface->get_character_extents)
+ (*(iface->get_character_extents)) (text, offset, real_x, real_y, real_width, real_height, coords);
+
+ if (*real_width <0)
{
- *row = 0;
- *col = 0;
+ *real_x = *real_x + *real_width;
+ *real_width *= -1;
}
}
/**
- * atk_text_get_range_attributes
- * @text: an #AtkText
- * @start_offset: start position
- * @end_offset: end position
+ * atk_text_get_run_attributes:
+ *@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: (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
+ *set to the start and end of the range around @offset where the attributes are
+ *invariant. Note that @end_offset is the offset of the first character
+ *after the range. See the enum AtkTextAttribute for types of text
+ *attributes that can be returned. Note that other attributes may also be
+ *returned.
*
- * Returns a #PangoAttrList with the text attributes between the
- * @start_offset and the @end_offset.
+ *Returns: (transfer full): an #AtkAttributeSet which contains the attributes
+ * explicitly set at @offset. This #AtkAttributeSet should be freed by a call
+ * to atk_attribute_set_free().
**/
-PangoAttrList*
-atk_text_get_range_attributes (AtkText *text,
- gint start_offset,
- gint end_offset)
+AtkAttributeSet*
+atk_text_get_run_attributes (AtkText *text,
+ gint offset,
+ 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 (text != NULL, NULL);
g_return_val_if_fail (ATK_IS_TEXT (text), NULL);
+ if (start_offset)
+ real_start_offset = start_offset;
+ else
+ real_start_offset = &local_start_offset;
+ if (end_offset)
+ real_end_offset = end_offset;
+ else
+ real_end_offset = &local_end_offset;
+
+ if (offset < -1)
+ return NULL;
+
iface = ATK_TEXT_GET_IFACE (text);
- if (iface->get_range_attributes)
- return (*(iface->get_range_attributes)) (text, start_offset, end_offset);
+ if (iface->get_run_attributes)
+ return (*(iface->get_run_attributes)) (text, offset, real_start_offset, real_end_offset);
else
return NULL;
}
/**
- * atk_text_get_character_extents
- * @text: an #AtkText
- * @offset: position
- * @x: x-position of character
- * @y: y-position of character
- * @length: length of character
- * @width: width of character
+ * atk_text_get_default_attributes:
+ *@text: an #AtkText
*
- * Given an @offset, the @x, @y, @length, and @width values are filled
- * appropriately.
- **/
-void
-atk_text_get_character_extents (AtkText *text,
- gint offset,
- gint *x,
- gint *y,
- gint *length,
- gint *width)
+ *Creates an #AtkAttributeSet which consists of the default values of
+ *attributes for the text. See the enum AtkTextAttribute for types of text
+ *attributes that can be returned. Note that other attributes may also be
+ *returned.
+ *
+ *Returns: (transfer full): an #AtkAttributeSet which contains the default
+ * values of attributes. at @offset. this #atkattributeset should be freed by
+ * a call to atk_attribute_set_free().
+ */
+AtkAttributeSet*
+atk_text_get_default_attributes (AtkText *text)
{
AtkTextIface *iface;
- g_return_if_fail (text != NULL);
- g_return_if_fail (ATK_IS_TEXT (text));
+ g_return_val_if_fail (ATK_IS_TEXT (text), NULL);
iface = ATK_TEXT_GET_IFACE (text);
- if (iface->get_character_extents)
- (*(iface->get_character_extents)) (text, offset, x, y, length, width);
+ if (iface->get_default_attributes)
+ return (*(iface->get_default_attributes)) (text);
else
- {
- *x = 0;
- *x = 0;
- *length = 0;
- *width = 0;
- }
+ return NULL;
}
/**
- * atk_text_get_character_count
+ * atk_text_get_character_count:
* @text: an #AtkText
*
+ * Gets the character count.
+ *
* Returns: the number of characters.
**/
gint
{
AtkTextIface *iface;
- g_return_val_if_fail (text != NULL, -1);
g_return_val_if_fail (ATK_IS_TEXT (text), -1);
iface = ATK_TEXT_GET_IFACE (text);
}
/**
- * atk_text_get_offset_at_point
+ * atk_text_get_offset_at_point:
* @text: an #AtkText
- * @x: x-position of character
- * @y: y-position of character
+ * @x: screen x-position of character
+ * @y: screen y-position of character
+ * @coords: specify whether coordinates are relative to the screen or
+ * widget window
+ *
+ * Gets the offset of the character located at coordinates @x and @y. @x and @y
+ * are interpreted as being relative to the screen or this widget's window
+ * depending on @coords.
*
* Returns: the offset to the character which is located at
* the specified @x and @y coordinates.
gint
atk_text_get_offset_at_point (AtkText *text,
gint x,
- gint y)
+ gint y,
+ AtkCoordType coords)
{
AtkTextIface *iface;
- g_return_val_if_fail (text != NULL, -1);
g_return_val_if_fail (ATK_IS_TEXT (text), -1);
iface = ATK_TEXT_GET_IFACE (text);
if (iface->get_offset_at_point)
- return (*(iface->get_offset_at_point)) (text, x, y);
+ return (*(iface->get_offset_at_point)) (text, x, y, coords);
else
return -1;
}
/**
- * atk_text_get_selected_text
+ * atk_text_get_n_selections:
* @text: an #AtkText
*
- * Returns: the selected text.
+ * Gets the number of selected regions.
+ *
+ * Returns: The number of selected regions, or -1 if a failure
+ * occurred.
+ **/
+gint
+atk_text_get_n_selections (AtkText *text)
+{
+ AtkTextIface *iface;
+
+ g_return_val_if_fail (ATK_IS_TEXT (text), -1);
+
+ iface = ATK_TEXT_GET_IFACE (text);
+
+ if (iface->get_n_selections)
+ return (*(iface->get_n_selections)) (text);
+ else
+ return -1;
+}
+
+/**
+ * atk_text_get_selection:
+ * @text: an #AtkText
+ * @selection_num: The selection number. The selected regions are
+ * assigned numbers that correspond to how far the region is from the
+ * 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: (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: a newly allocated string containing the selected text. Use g_free()
+ * to free the returned string.
**/
gchar*
-atk_text_get_selected_text (AtkText *text)
+atk_text_get_selection (AtkText *text,
+ gint selection_num,
+ 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 (text != NULL, NULL);
g_return_val_if_fail (ATK_IS_TEXT (text), NULL);
+ if (start_offset)
+ real_start_offset = start_offset;
+ else
+ real_start_offset = &local_start_offset;
+ if (end_offset)
+ real_end_offset = end_offset;
+ else
+ real_end_offset = &local_end_offset;
+
iface = ATK_TEXT_GET_IFACE (text);
- if (iface->get_selected_text)
- return (*(iface->get_selected_text)) (text);
+ if (iface->get_selection)
+ {
+ return (*(iface->get_selection)) (text, selection_num,
+ real_start_offset, real_end_offset);
+ }
else
return NULL;
}
/**
- * atk_text_get_selection_bounds
+ * atk_text_add_selection:
* @text: an #AtkText
- * @start_offset: start position
- * @end_offset: end position
+ * @start_offset: the start position of the selected region
+ * @end_offset: the offset of the first character after the selected region.
+ *
+ * Adds a selection bounded by the specified offsets.
*
- * @start_offset and @end_offset are filled with the
- * current selection bounds.
+ * Returns: %TRUE if success, %FALSE otherwise
**/
-void
-atk_text_get_selection_bounds (AtkText *text,
- gint *start_offset,
- gint *end_offset)
+gboolean
+atk_text_add_selection (AtkText *text,
+ gint start_offset,
+ gint end_offset)
{
AtkTextIface *iface;
- g_return_if_fail (text != NULL);
- g_return_if_fail (ATK_IS_TEXT (text));
+ g_return_val_if_fail (ATK_IS_TEXT (text), FALSE);
iface = ATK_TEXT_GET_IFACE (text);
- if (iface->get_selection_bounds)
- (*(iface->get_selection_bounds)) (text, start_offset, end_offset);
+ if (iface->add_selection)
+ return (*(iface->add_selection)) (text, start_offset, end_offset);
else
- {
- *start_offset = 0;
- *end_offset = 0;
- }
+ return FALSE;
}
/**
- * atk_text_set_selection_bounds
+ * atk_text_remove_selection:
* @text: an #AtkText
- * @start_offset: start position
- * @end_offset: end position
+ * @selection_num: The selection number. The selected regions are
+ * assigned numbers that correspond to how far the region is from the
+ * 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.
*
- * The selection bounds are set to the specified @start_offset
- * and @end_offset values.
- *
- * Returns: %TRUE if success, %FALSE otherwise.
+ * Removes the specified selection.
+ *
+ * Returns: %TRUE if success, %FALSE otherwise
**/
gboolean
-atk_text_set_selection_bounds (AtkText *text,
- gint start_offset,
- gint end_offset)
+atk_text_remove_selection (AtkText *text,
+ gint selection_num)
{
AtkTextIface *iface;
- g_return_val_if_fail (text != NULL, FALSE);
g_return_val_if_fail (ATK_IS_TEXT (text), FALSE);
iface = ATK_TEXT_GET_IFACE (text);
- if (iface->set_selection_bounds)
- {
- return (*(iface->set_selection_bounds)) (text, start_offset, end_offset);
- }
+ if (iface->remove_selection)
+ return (*(iface->remove_selection)) (text, selection_num);
else
- {
- return FALSE;
- }
+ return FALSE;
+}
+
+/**
+ * atk_text_set_selection:
+ * @text: an #AtkText
+ * @selection_num: The selection number. The selected regions are
+ * assigned numbers that correspond to how far the region is from the
+ * 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: the new start position of the selection
+ * @end_offset: the new end position of (e.g. offset immediately past)
+ * the selection
+ *
+ * Changes the start and end offset of the specified selection.
+ *
+ * Returns: %TRUE if success, %FALSE otherwise
+ **/
+gboolean
+atk_text_set_selection (AtkText *text,
+ gint selection_num,
+ gint start_offset,
+ gint end_offset)
+{
+ AtkTextIface *iface;
+
+ g_return_val_if_fail (ATK_IS_TEXT (text), FALSE);
+
+ iface = ATK_TEXT_GET_IFACE (text);
+
+ if (iface->set_selection)
+ {
+ return (*(iface->set_selection)) (text, selection_num,
+ start_offset, end_offset);
+ }
+ else
+ return FALSE;
}
/**
- * atk_text_set_caret_offset
+ * atk_text_set_caret_offset:
* @text: an #AtkText
* @offset: position
*
{
AtkTextIface *iface;
- g_return_val_if_fail (text != NULL, FALSE);
g_return_val_if_fail (ATK_IS_TEXT (text), FALSE);
iface = ATK_TEXT_GET_IFACE (text);
return FALSE;
}
}
+
+/**
+ * atk_text_get_range_extents:
+ * @text: an #AtkText
+ * @start_offset: The offset of the first text character for which boundary
+ * information is required.
+ * @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.
+ *
+ * Get the bounding box for text within the specified range.
+ *
+ * Since: 1.3
+ **/
+void
+atk_text_get_range_extents (AtkText *text,
+ gint start_offset,
+ gint end_offset,
+ AtkCoordType coord_type,
+ AtkTextRectangle *rect)
+{
+ AtkTextIface *iface;
+
+ g_return_if_fail (ATK_IS_TEXT (text));
+ g_return_if_fail (rect);
+ g_return_if_fail (start_offset >= 0 && start_offset < end_offset);
+
+ iface = ATK_TEXT_GET_IFACE (text);
+
+ if (iface->get_range_extents)
+ (*(iface->get_range_extents)) (text, start_offset, end_offset, coord_type, rect);
+}
+
+/**
+ * atk_text_get_bounded_ranges:
+ * @text: an #AtkText
+ * @rect: An AtkTextRectangle giving the dimensions of the bounding box.
+ * @coord_type: Specify whether coordinates are relative to the screen or widget window.
+ * @x_clip_type: Specify the horizontal clip type.
+ * @y_clip_type: Specify the vertical clip type.
+ *
+ * Get the ranges of text in the specified bounding box.
+ *
+ * Since: 1.3
+ *
+ * Returns: (array zero-terminated=1): Array of AtkTextRange. The last
+ * element of the array returned by this function will be NULL.
+ **/
+AtkTextRange**
+atk_text_get_bounded_ranges (AtkText *text,
+ AtkTextRectangle *rect,
+ AtkCoordType coord_type,
+ AtkTextClipType x_clip_type,
+ AtkTextClipType y_clip_type)
+{
+ AtkTextIface *iface;
+
+ g_return_val_if_fail (ATK_IS_TEXT (text), NULL);
+ g_return_val_if_fail (rect, NULL);
+
+ iface = ATK_TEXT_GET_IFACE (text);
+
+ if (iface->get_bounded_ranges)
+ return (*(iface->get_bounded_ranges)) (text, rect, coord_type, x_clip_type, y_clip_type);
+ else
+ return NULL;
+}
+
+/**
+ * atk_attribute_set_free:
+ * @attrib_set: The #AtkAttributeSet to free
+ *
+ * Frees the memory used by an #AtkAttributeSet, including all its
+ * #AtkAttributes.
+ **/
+void
+atk_attribute_set_free (AtkAttributeSet *attrib_set)
+{
+ GSList *temp;
+
+ temp = attrib_set;
+
+ while (temp != NULL)
+ {
+ AtkAttribute *att;
+
+ att = temp->data;
+
+ g_free (att->name);
+ g_free (att->value);
+ g_free (att);
+ temp = temp->next;
+ }
+ g_slist_free (attrib_set);
+}
+
+/**
+ * atk_text_attribute_register:
+ * @name: a name string
+ *
+ * Associate @name with a new #AtkTextAttribute
+ *
+ * Returns: an #AtkTextAttribute associated with @name
+ **/
+AtkTextAttribute
+atk_text_attribute_register (const gchar *name)
+{
+ g_return_val_if_fail (name, ATK_TEXT_ATTR_INVALID);
+
+ if (!extra_attributes)
+ extra_attributes = g_ptr_array_new ();
+
+ g_ptr_array_add (extra_attributes, g_strdup (name));
+ return extra_attributes->len + ATK_TEXT_ATTR_LAST_DEFINED;
+}
+
+/**
+ * atk_text_attribute_get_name:
+ * @attr: The #AtkTextAttribute whose name is required
+ *
+ * Gets the name corresponding to the #AtkTextAttribute
+ *
+ * Returns: a string containing the name; this string should not be freed
+ **/
+const gchar*
+atk_text_attribute_get_name (AtkTextAttribute attr)
+{
+ GTypeClass *type_class;
+ GEnumValue *value;
+ const gchar *name = NULL;
+
+ type_class = g_type_class_ref (ATK_TYPE_TEXT_ATTRIBUTE);
+ g_return_val_if_fail (G_IS_ENUM_CLASS (type_class), NULL);
+
+ value = g_enum_get_value (G_ENUM_CLASS (type_class), attr);
+
+ if (value)
+ {
+ name = value->value_nick;
+ }
+ else
+ {
+ if (extra_attributes)
+ {
+ gint n = attr;
+
+ n -= ATK_TEXT_ATTR_LAST_DEFINED + 1;
+
+ if (n < extra_attributes->len)
+
+ name = g_ptr_array_index (extra_attributes, n);
+ }
+ }
+ g_type_class_unref (type_class);
+ return name;
+}
+
+/**
+ * atk_text_attribute_for_name:
+ * @name: a string which is the (non-localized) name of an ATK text attribute.
+ *
+ * Get the #AtkTextAttribute type corresponding to a text attribute name.
+ *
+ * Returns: the #AtkTextAttribute enumerated type corresponding to the specified
+name,
+ * or #ATK_TEXT_ATTRIBUTE_INVALID if no matching text attribute is found.
+ **/
+AtkTextAttribute
+atk_text_attribute_for_name (const gchar *name)
+{
+ GTypeClass *type_class;
+ GEnumValue *value;
+ AtkTextAttribute type = ATK_TEXT_ATTR_INVALID;
+
+ g_return_val_if_fail (name, ATK_TEXT_ATTR_INVALID);
+
+ type_class = g_type_class_ref (ATK_TYPE_TEXT_ATTRIBUTE);
+ g_return_val_if_fail (G_IS_ENUM_CLASS (type_class), ATK_TEXT_ATTR_INVALID);
+
+ value = g_enum_get_value_by_nick (G_ENUM_CLASS (type_class), name);
+
+ if (value)
+ {
+ type = value->value;
+ }
+ else
+ {
+ gint i;
+
+ if (extra_attributes)
+ {
+ for (i = 0; i < extra_attributes->len; i++)
+ {
+ gchar *extra_attribute = (gchar *)g_ptr_array_index (extra_attributes, i);
+
+ g_return_val_if_fail (extra_attribute, ATK_TEXT_ATTR_INVALID);
+
+ if (strcmp (name, extra_attribute) == 0)
+ {
+ type = i + 1 + ATK_TEXT_ATTR_LAST_DEFINED;
+ break;
+ }
+ }
+ }
+ }
+ g_type_class_unref (type_class);
+
+ return type;
+}
+
+/**
+ * atk_text_attribute_get_value:
+ * @attr: The #AtkTextAttribute for which a value is required
+ * @index_: The index of the required value
+ *
+ * Gets the value for the index of the #AtkTextAttribute
+ *
+ * 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,
+ gint index)
+{
+ switch (attr)
+ {
+ case ATK_TEXT_ATTR_INVISIBLE:
+ case ATK_TEXT_ATTR_EDITABLE:
+ case ATK_TEXT_ATTR_BG_FULL_HEIGHT:
+ case ATK_TEXT_ATTR_STRIKETHROUGH:
+ case ATK_TEXT_ATTR_BG_STIPPLE:
+ case ATK_TEXT_ATTR_FG_STIPPLE:
+ g_assert (index >= 0 && index < G_N_ELEMENTS (boolean_offsets));
+ return boolean + boolean_offsets[index];
+ case ATK_TEXT_ATTR_UNDERLINE:
+ g_assert (index >= 0 && index < G_N_ELEMENTS (underline_offsets));
+ return underline + underline_offsets[index];
+ case ATK_TEXT_ATTR_WRAP_MODE:
+ g_assert (index >= 0 && index < G_N_ELEMENTS (wrap_mode_offsets));
+ return wrap_mode + wrap_mode_offsets[index];
+ case ATK_TEXT_ATTR_DIRECTION:
+ g_assert (index >= 0 && index < G_N_ELEMENTS (direction_offsets));
+ return direction + direction_offsets[index];
+ case ATK_TEXT_ATTR_JUSTIFICATION:
+ g_assert (index >= 0 && index < G_N_ELEMENTS (justification_offsets));
+ return justification + justification_offsets[index];
+ case ATK_TEXT_ATTR_STRETCH:
+ g_assert (index >= 0 && index < G_N_ELEMENTS (stretch_offsets));
+ return stretch + stretch_offsets[index];
+ case ATK_TEXT_ATTR_VARIANT:
+ g_assert (index >= 0 && index < G_N_ELEMENTS (variant_offsets));
+ return variant + variant_offsets[index];
+ case ATK_TEXT_ATTR_STYLE:
+ g_assert (index >= 0 && index < G_N_ELEMENTS (style_offsets));
+ return style + style_offsets[index];
+ default:
+ return NULL;
+ }
+}
+
+static void
+atk_text_rectangle_union (AtkTextRectangle *src1,
+ AtkTextRectangle *src2,
+ AtkTextRectangle *dest)
+{
+ gint dest_x, dest_y;
+
+ dest_x = MIN (src1->x, src2->x);
+ dest_y = MIN (src1->y, src2->y);
+ dest->width = MAX (src1->x + src1->width, src2->x + src2->width) - dest_x;
+ dest->height = MAX (src1->y + src1->height, src2->y + src2->height) - dest_y;
+ dest->x = dest_x;
+ dest->y = dest_y;
+}
+
+static gboolean
+atk_text_rectangle_contain (AtkTextRectangle *clip,
+ AtkTextRectangle *bounds,
+ AtkTextClipType x_clip_type,
+ AtkTextClipType y_clip_type)
+{
+ gboolean x_min_ok, x_max_ok, y_min_ok, y_max_ok;
+
+ x_min_ok = (bounds->x >= clip->x) ||
+ ((bounds->x + bounds->width >= clip->x) &&
+ ((x_clip_type == ATK_TEXT_CLIP_NONE) ||
+ (x_clip_type == ATK_TEXT_CLIP_MAX)));
+
+ x_max_ok = (bounds->x + bounds->width <= clip->x + clip->width) ||
+ ((bounds->x <= clip->x + clip->width) &&
+ ((x_clip_type == ATK_TEXT_CLIP_NONE) ||
+ (x_clip_type == ATK_TEXT_CLIP_MIN)));
+
+ y_min_ok = (bounds->y >= clip->y) ||
+ ((bounds->y + bounds->height >= clip->y) &&
+ ((y_clip_type == ATK_TEXT_CLIP_NONE) ||
+ (y_clip_type == ATK_TEXT_CLIP_MAX)));
+
+ y_max_ok = (bounds->y + bounds->height <= clip->y + clip->height) ||
+ ((bounds->y <= clip->y + clip->height) &&
+ ((y_clip_type == ATK_TEXT_CLIP_NONE) ||
+ (y_clip_type == ATK_TEXT_CLIP_MIN)));
+
+ return (x_min_ok && x_max_ok && y_min_ok && y_max_ok);
+
+}
+
+static void
+atk_text_real_get_range_extents (AtkText *text,
+ gint start_offset,
+ gint end_offset,
+ AtkCoordType coord_type,
+ AtkTextRectangle *rect)
+{
+ gint i;
+ AtkTextRectangle cbounds, bounds;
+
+ atk_text_get_character_extents (text, start_offset,
+ &bounds.x, &bounds.y,
+ &bounds.width, &bounds.height,
+ coord_type);
+
+ for (i = start_offset + 1; i < end_offset; i++)
+ {
+ atk_text_get_character_extents (text, i,
+ &cbounds.x, &cbounds.y,
+ &cbounds.width, &cbounds.height,
+ coord_type);
+ atk_text_rectangle_union (&bounds, &cbounds, &bounds);
+ }
+
+ rect->x = bounds.x;
+ rect->y = bounds.y;
+ rect->width = bounds.width;
+ rect->height = bounds.height;
+}
+
+static AtkTextRange**
+atk_text_real_get_bounded_ranges (AtkText *text,
+ AtkTextRectangle *rect,
+ AtkCoordType coord_type,
+ AtkTextClipType x_clip_type,
+ AtkTextClipType y_clip_type)
+{
+ gint bounds_min_offset, bounds_max_offset;
+ gint min_line_start, min_line_end;
+ gint max_line_start, max_line_end;
+ gchar *line;
+ gint curr_offset;
+ gint offset;
+ gint num_ranges = 0;
+ gint range_size = 1;
+ AtkTextRectangle cbounds;
+ AtkTextRange **range;
+
+ range = NULL;
+ bounds_min_offset = atk_text_get_offset_at_point (text, rect->x, rect->y, coord_type);
+ bounds_max_offset = atk_text_get_offset_at_point (text, rect->x + rect->width, rect->y + rect->height, coord_type);
+
+ if (bounds_min_offset == 0 &&
+ bounds_min_offset == bounds_max_offset)
+ return NULL;
+
+ line = atk_text_get_text_at_offset (text, bounds_min_offset,
+ ATK_TEXT_BOUNDARY_LINE_START,
+ &min_line_start, &min_line_end);
+ g_free (line);
+ line = atk_text_get_text_at_offset (text, bounds_max_offset,
+ ATK_TEXT_BOUNDARY_LINE_START,
+ &max_line_start, &max_line_end);
+ g_free (line);
+ bounds_min_offset = MIN (min_line_start, max_line_start);
+ bounds_max_offset = MAX (min_line_end, max_line_end);
+
+ curr_offset = bounds_min_offset;
+ while (curr_offset < bounds_max_offset)
+ {
+ offset = curr_offset;
+
+ while (curr_offset < bounds_max_offset)
+ {
+ atk_text_get_character_extents (text, curr_offset,
+ &cbounds.x, &cbounds.y,
+ &cbounds.width, &cbounds.height,
+ coord_type);
+ if (!atk_text_rectangle_contain (rect, &cbounds, x_clip_type, y_clip_type))
+ break;
+ curr_offset++;
+ }
+ if (curr_offset > offset)
+ {
+ AtkTextRange *one_range = g_new (AtkTextRange, 1);
+
+ one_range->start_offset = offset;
+ one_range->end_offset = curr_offset;
+ one_range->content = atk_text_get_text (text, offset, curr_offset);
+ atk_text_get_range_extents (text, offset, curr_offset, coord_type, &one_range->bounds);
+
+ if (num_ranges >= range_size - 1)
+ {
+ range_size *= 2;
+ range = g_realloc (range, range_size * sizeof (gpointer));
+ }
+ range[num_ranges] = one_range;
+ num_ranges++;
+ }
+ curr_offset++;
+ if (range)
+ range[num_ranges] = NULL;
+ }
+ return range;
+}
+
+/**
+ * atk_text_free_ranges:
+ * @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
+ * and is NULL terminated.
+ *
+ * Since: 1.3
+ **/
+void
+atk_text_free_ranges (AtkTextRange **ranges)
+{
+ AtkTextRange **first = ranges;
+
+ if (ranges)
+ {
+ while (*ranges)
+ {
+ AtkTextRange *range;
+
+ range = *ranges;
+ ranges++;
+ g_free (range->content);
+ g_free (range);
+ }
+ g_free (first);
+ }
+}
+
+static AtkTextRange *
+atk_text_range_copy (AtkTextRange *src)
+{
+ AtkTextRange *dst = g_new0 (AtkTextRange, 1);
+ dst->bounds = src->bounds;
+ dst->start_offset = src->start_offset;
+ dst->end_offset = src->end_offset;
+ if (src->content)
+ dst->content = g_strdup (src->content);
+ return dst;
+}
+
+static void
+atk_text_range_free (AtkTextRange *range)
+{
+ g_free (range->content);
+ g_free (range);
+}
+
+G_DEFINE_BOXED_TYPE (AtkTextRange, atk_text_range, atk_text_range_copy,
+ atk_text_range_free)
projects / platform / upstream / atk.git / blobdiff