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Fix handling of child widgets in the presence of bidi text

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GtkTextLayout incorrectly assumed that pango iterates in logical
order. Fixes bug 580814.
This commit is contained in:
Itay Perl 2009-05-03 23:26:11 -04:00 committed by Matthias Clasen
parent 7f6a534d0f
commit 850965101f
1 changed files with 35 additions and 15 deletions
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50
gtk/gtktextlayout.c
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@ -147,6 +147,16 @@ static void gtk_text_layout_buffer_delete_range (GtkTextBuffer *textbuffer,
static void gtk_text_layout_update_cursor_line (GtkTextLayout *layout);
static void line_display_index_to_iter (GtkTextLayout *layout,
GtkTextLineDisplay *display,
GtkTextIter *iter,
gint index,
gint trailing);
static gint line_display_iter_to_index (GtkTextLayout *layout,
GtkTextLineDisplay *display,
const GtkTextIter *iter);
enum {
INVALIDATED,
CHANGED,
@ -1800,49 +1810,59 @@ static void
allocate_child_widgets (GtkTextLayout *text_layout,
GtkTextLineDisplay *display)
{
GSList *shaped = display->shaped_objects;
PangoLayout *layout = display->layout;
PangoLayoutIter *iter;
PangoLayoutIter *run_iter;
iter = pango_layout_get_iter (layout);
run_iter = pango_layout_get_iter (layout);
do
{
PangoLayoutRun *run = pango_layout_iter_get_run_readonly (iter);
PangoLayoutRun *run = pango_layout_iter_get_run_readonly (run_iter);
if (run && is_shape (run))
{
GObject *shaped_object = shaped->data;
shaped = shaped->next;
/* shaped_object is NULL for child anchors with no
* widgets stored at them
gint byte_index;
GtkTextIter text_iter;
GtkTextChildAnchor *anchor = 0;
GList *widgets = 0;
/* The pango iterator iterates in visual order.
* We use the byte index to find the child widget.
*/
if (GTK_IS_WIDGET (shaped_object))
byte_index = pango_layout_iter_get_index (run_iter);
line_display_index_to_iter (text_layout, display, &text_iter, byte_index, 0);
anchor = gtk_text_iter_get_child_anchor (&text_iter);
widgets = gtk_text_child_anchor_get_widgets (anchor);
if (widgets)
{
PangoRectangle extents;
GtkWidget *child = widgets->data;
/* We emit "allocate_child" with the x,y of
* the widget with respect to the top of the line
* and the left side of the buffer
*/
pango_layout_iter_get_run_extents (iter,
pango_layout_iter_get_run_extents (run_iter,
NULL,
&extents);
g_signal_emit (text_layout,
signals[ALLOCATE_CHILD],
0,
shaped_object,
child,
PANGO_PIXELS (extents.x) + display->x_offset,
PANGO_PIXELS (extents.y) + display->top_margin);
g_list_free (widgets);
}
}
}
while (pango_layout_iter_next_run (iter));
while (pango_layout_iter_next_run (run_iter));
pango_layout_iter_free (iter);
pango_layout_iter_free (run_iter);
}
static void