* AT-SPI - Assistive Technology Service Provider Interface
* (Gnome Accessibility Project; http://developer.gnome.org/projects/gap)
*
- * Copyright 2001 Sun Microsystems Inc.
+ * Copyright 2001, 2002 Sun Microsystems Inc.,
+ * Copyright 2001, 2002 Ximian, Inc.
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Library General Public
#include <config.h>
#include <stdio.h>
#include <stdlib.h>
+#include <string.h>
#include <atk/atktext.h>
#include <libspi/text.h>
+#include <libspi/spi-private.h>
/* Our parent Gtk object type */
#define PARENT_TYPE SPI_TYPE_BASE
+typedef struct {
+ gint x;
+ gint y;
+ gint w;
+ gint h;
+} SpiTextRect;
+
+static SpiTextRect *
+_spi_text_rect_union (SpiTextRect *aggregate, SpiTextRect *subrect)
+{
+ if (subrect != NULL)
+ {
+ /* 'normalize' subrect */
+ if (subrect->w < 0)
+ {
+ subrect->x += subrect->w;
+ subrect->w *= -1;
+ }
+ if (subrect->h < 0)
+ {
+ subrect->y += subrect->h;
+ subrect->h *= -1;
+ }
+ if (aggregate == NULL)
+ {
+ aggregate = g_new (SpiTextRect, 1);
+ memcpy (aggregate, subrect, sizeof (SpiTextRect));
+ }
+ else
+ {
+ gint ax2 = aggregate->x + aggregate->w;
+ gint ay2 = aggregate->y + aggregate->h;
+ gint sx2 = subrect->x + subrect->w;
+ gint sy2 = subrect->y + subrect->h;
+ if (subrect->x < aggregate->x)
+ {
+ aggregate->w += (aggregate->x - subrect->x);
+ aggregate->x = subrect->x;
+ }
+ if (sx2 > ax2)
+ {
+ aggregate->w += (sx2 - ax2);
+ }
+ if (subrect->y < aggregate->y)
+ {
+ aggregate->h += (aggregate->y - subrect->y);
+ aggregate->y = subrect->y;
+ }
+ if (sy2 > ay2)
+ {
+ aggregate->h += (sy2 - ay2);
+ }
+ }
+ }
+ return aggregate;
+}
+
static AtkText *
get_text_from_servant (PortableServer_Servant servant)
{
tmp = g_strdup_printf ("%s%s:%s%s",
((GSList *)(set) == cur_attr) ? "" : " ",
at->name, at->value,
- (cur_attr->next) ? ", " : "");
+ (cur_attr->next) ? ";" : "");
tmp2 = g_strconcat (attributes, tmp, NULL);
g_free (tmp);
g_free (attributes);
return atk_text_set_caret_offset (text, value);
}
+#define SPI_TEXT_MIN_RANGE_FOR_LINE_CHECK 6
+
+static void
+impl_getRangeExtents(PortableServer_Servant servant,
+ const CORBA_long startOffset,
+ const CORBA_long endOffset,
+ CORBA_long * x, CORBA_long * y,
+ CORBA_long * width,
+ CORBA_long * height,
+ const CORBA_short coordType,
+ CORBA_Environment * ev)
+{
+ AtkText *text = get_text_from_servant (servant);
+ SpiTextRect cbounds, bounds;
+ int i;
+
+ g_return_if_fail (text != NULL);
+
+ atk_text_get_character_extents (text, startOffset,
+ &bounds.x, &bounds.y, &bounds.w, &bounds.h,
+ (AtkCoordType) coordType);
+ /* no equivalent ATK API yet, must do the hard way. :-( */
+ for (i = startOffset + 1; i < endOffset; i++)
+ {
+ atk_text_get_character_extents (text, i,
+ &cbounds.x, &cbounds.y, &cbounds.w, &cbounds.h,
+ (AtkCoordType) coordType);
+ _spi_text_rect_union (&bounds, &cbounds);
+ }
+
+ *x = bounds.x;
+ *y = bounds.y;
+ *width = bounds.w;
+ *height = bounds.h;
+}
+
+static Accessibility_Text_RangeList *
+_spi_text_range_seq_from_gslist (GSList *range_list)
+{
+ Accessibility_Text_RangeList *rangeList =
+ Accessibility_Text_RangeList__alloc ();
+ int i, len = g_slist_length (range_list);
+ GSList *list = range_list;
+
+ rangeList->_length = len;
+ rangeList->_buffer = Accessibility_Text_RangeList_allocbuf (len);
+ for (i = 0; i < len; ++i)
+ {
+ memcpy (&rangeList->_buffer[i], list->data, sizeof (Accessibility_Text_Range));
+ spi_init_any_nil (&rangeList->_buffer[i].data);
+ g_free (list->data);
+ list = g_slist_next (range_list);
+ }
+ g_slist_free (range_list);
+
+ return rangeList;
+}
+
+static gboolean
+_spi_bounds_contain (SpiTextRect *clip, SpiTextRect *cbounds,
+ Accessibility_TEXT_CLIP_TYPE xClipType,
+ Accessibility_TEXT_CLIP_TYPE yClipType)
+{
+ gint clipx2 = clip->x + clip->w;
+ gint clipy2 = clip->y + clip->h;
+ gint charx2 = cbounds->x + cbounds->w;
+ gint chary2 = cbounds->y + cbounds->h;
+ gboolean x_min_ok, y_min_ok, x_max_ok, y_max_ok;
+
+ x_min_ok = (cbounds->x >= clip->x) ||
+ ((charx2 >= clip->x) &&
+ ((xClipType == Accessibility_TEXT_CLIP_NONE) ||
+ (xClipType == Accessibility_TEXT_CLIP_MAX)));
+ x_max_ok = (charx2 <= clipx2) ||
+ ((cbounds->x <= clipx2) &&
+ ((xClipType == Accessibility_TEXT_CLIP_NONE) ||
+ (xClipType == Accessibility_TEXT_CLIP_MIN)));
+ y_min_ok = (cbounds->y >= clip->y) ||
+ ((chary2 >= clip->y) &&
+ ((yClipType == Accessibility_TEXT_CLIP_NONE) ||
+ (yClipType == Accessibility_TEXT_CLIP_MAX)));
+ y_max_ok = (chary2 <= clipy2) ||
+ ((cbounds->y <= clipy2) &&
+ ((yClipType == Accessibility_TEXT_CLIP_NONE) ||
+ (yClipType == Accessibility_TEXT_CLIP_MIN)));
+
+ if (x_min_ok && y_min_ok && x_max_ok && y_max_ok)
+ return TRUE;
+ else
+ return FALSE;
+}
+
+Accessibility_Text_RangeList *
+impl_getBoundedRanges(PortableServer_Servant servant,
+ const CORBA_long x,
+ const CORBA_long y,
+ const CORBA_long width,
+ const CORBA_long height,
+ const CORBA_short coordType,
+ const Accessibility_TEXT_CLIP_TYPE xClipType,
+ const Accessibility_TEXT_CLIP_TYPE yClipType,
+ CORBA_Environment * ev)
+{
+ AtkText *text = get_text_from_servant (servant);
+ GSList *range_list = NULL;
+ SpiTextRect clip;
+ int startOffset = 0, endOffset = atk_text_get_character_count (text);
+ int curr_offset;
+ gint minLineStart, minLineEnd, maxLineStart, maxLineEnd;
+ long bounds_min_offset;
+ long bounds_max_offset;
+
+ clip.x = x;
+ clip.y = y;
+ clip.w = width;
+ clip.h = height;
+
+ /* for horizontal text layouts, at least, the following check helps. */
+ bounds_min_offset = atk_text_get_offset_at_point (text, x, y,
+ (AtkCoordType) coordType);
+ bounds_max_offset = atk_text_get_offset_at_point (text, x + width, y + height,
+ (AtkCoordType) coordType);
+ atk_text_get_text_at_offset (text, bounds_min_offset,
+ ATK_TEXT_BOUNDARY_LINE_START,
+ &minLineStart, &minLineEnd);
+ atk_text_get_text_at_offset (text, bounds_max_offset,
+ ATK_TEXT_BOUNDARY_LINE_START,
+ &maxLineStart, &maxLineEnd);
+ startOffset = MIN (minLineStart, maxLineStart);
+ endOffset = MAX (minLineEnd, maxLineEnd);
+
+ curr_offset = startOffset;
+
+ while (curr_offset < endOffset)
+ {
+ int offset = startOffset;
+ SpiTextRect cbounds;
+ while (curr_offset < endOffset)
+ {
+ atk_text_get_character_extents (text, curr_offset,
+ &cbounds.x, &cbounds.y,
+ &cbounds.w, &cbounds.h,
+ (AtkCoordType) coordType);
+ if (!_spi_bounds_contain (&clip, &cbounds, xClipType, yClipType))
+ break;
+ curr_offset++;
+ }
+ /* add the range to our list */
+ if (curr_offset > offset)
+ {
+ Accessibility_Text_Range *range = g_malloc (sizeof (Accessibility_Text_Range));
+ char *s;
+ range->startOffset = offset;
+ range->endOffset = curr_offset;
+ s = atk_text_get_text (text, offset, curr_offset);
+ range->content = CORBA_string_dup (s ? s : "");
+ range_list = g_slist_append (range_list, range);
+ offset = curr_offset;
+ }
+ offset++;
+ }
+ return _spi_text_range_seq_from_gslist (range_list); /* frees the GSList too */
+}
+
+
static void
spi_text_class_init (SpiTextClass *klass)
{
epv->removeSelection = impl_removeSelection;
epv->setSelection = impl_setSelection;
epv->setCaretOffset = impl_setCaretOffset;
+ epv->getRangeExtents = impl_getRangeExtents;
+ epv->getBoundedRanges = impl_getBoundedRanges;
}
static void
projects / platform / core / uifw / at-spi2-atk.git / blobdiff