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block the text_layout's "changed" handler when changing cursor visibility

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2005-05-25  Michael Natterer  <mitch@imendio.com>

	* gtk/gtktextview.c (blink_cb): block the text_layout's "changed"
	handler when changing cursor visibility because it would expose
	the whole paragraph where the cursor is. Instead, expose the
	cursors' areas manually. (#173047).

	(text_window_invalidate_cursors): new function which exposes the
	cursors.

	* gtk/gtkstyle.c (draw_insertion_cursor): added comment that the
	same cursor size calculation is in text_window_invalidate_cursors().
This commit is contained in:
Michael Natterer 2005-05-25 10:22:37 +00:00 committed by Michael Natterer
parent 39c5b780e7
commit e3f318b459
5 changed files with 126 additions and 4 deletions
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13
ChangeLog
View File

@ -1,3 +1,16 @@
2005-05-25 Michael Natterer <mitch@imendio.com>
* gtk/gtktextview.c (blink_cb): block the text_layout's "changed"
handler when changing cursor visibility because it would expose
the whole paragraph where the cursor is. Instead, expose the
cursors' areas manually. (#173047).
(text_window_invalidate_cursors): new function which exposes the
cursors.
* gtk/gtkstyle.c (draw_insertion_cursor): added comment that the
same cursor size calculation is in text_window_invalidate_cursors().
2005-05-25 Matthias Clasen <mclasen@redhat.com>
* demos/gtk-demo/editable_cells.c (create_items_model): Also

13
ChangeLog.pre-2-10
View File

@ -1,3 +1,16 @@
2005-05-25 Michael Natterer <mitch@imendio.com>
* gtk/gtktextview.c (blink_cb): block the text_layout's "changed"
handler when changing cursor visibility because it would expose
the whole paragraph where the cursor is. Instead, expose the
cursors' areas manually. (#173047).
(text_window_invalidate_cursors): new function which exposes the
cursors.
* gtk/gtkstyle.c (draw_insertion_cursor): added comment that the
same cursor size calculation is in text_window_invalidate_cursors().
2005-05-25 Matthias Clasen <mclasen@redhat.com>
* demos/gtk-demo/editable_cells.c (create_items_model): Also

13
ChangeLog.pre-2-8
View File

@ -1,3 +1,16 @@
2005-05-25 Michael Natterer <mitch@imendio.com>
* gtk/gtktextview.c (blink_cb): block the text_layout's "changed"
handler when changing cursor visibility because it would expose
the whole paragraph where the cursor is. Instead, expose the
cursors' areas manually. (#173047).
(text_window_invalidate_cursors): new function which exposes the
cursors.
* gtk/gtkstyle.c (draw_insertion_cursor): added comment that the
same cursor size calculation is in text_window_invalidate_cursors().
2005-05-25 Matthias Clasen <mclasen@redhat.com>
* demos/gtk-demo/editable_cells.c (create_items_model): Also

6
gtk/gtkstyle.c
View File

@ -6628,7 +6628,11 @@ draw_insertion_cursor (GtkWidget *widget,
gint offset;
g_return_if_fail (direction != GTK_TEXT_DIR_NONE);
/* When changing the shape or size of the cursor here,
* propagate the changes to gtktextview.c:text_window_invalidate_cursors().
*/
gtk_widget_style_get (widget, "cursor-aspect-ratio", &cursor_aspect_ratio, NULL);
stem_width = location->height * cursor_aspect_ratio + 1;

85
gtk/gtktextview.c
View File

@ -408,6 +408,7 @@ static void text_window_scroll (GtkTextWindow *win,
gint dy);
static void text_window_invalidate_rect (GtkTextWindow *win,
GdkRectangle *rect);
static void text_window_invalidate_cursors (GtkTextWindow *win);
static gint text_window_get_width (GtkTextWindow *win);
static gint text_window_get_height (GtkTextWindow *win);
@ -4502,9 +4503,22 @@ blink_cb (gpointer data)
text_view->blink_timeout = g_timeout_add (get_cursor_time (text_view) * CURSOR_ON_MULTIPLIER,
blink_cb,
text_view);
gtk_text_layout_set_cursor_visible (text_view->layout,
!visible);
/* Block changed_handler while changing the layout's cursor visibility
* because it would expose the whole paragraph. Instead, we expose
* the cursor's area(s) manually below.
*/
g_signal_handlers_block_by_func (text_view->layout,
changed_handler,
text_view);
gtk_text_layout_set_cursor_visible (text_view->layout, !visible);
g_signal_handlers_unblock_by_func (text_view->layout,
changed_handler,
text_view);
text_window_invalidate_cursors (text_view->text_window);
GDK_THREADS_LEAVE ();
@ -7357,6 +7371,71 @@ text_window_invalidate_rect (GtkTextWindow *win,
#endif
}
static void
text_window_invalidate_cursors (GtkTextWindow *win)
{
GtkTextView *text_view = GTK_TEXT_VIEW (win->widget);
GtkTextIter iter;
GdkRectangle strong;
GdkRectangle weak;
gboolean draw_arrow;
gfloat cursor_aspect_ratio;
gint stem_width;
gint arrow_width;
gtk_text_buffer_get_iter_at_mark (text_view->buffer, &iter,
gtk_text_buffer_get_insert (text_view->buffer));
gtk_text_layout_get_cursor_locations (text_view->layout, &iter,
&strong, &weak);
/* cursor width calculation as in gtkstyle.c:draw_insertion_cursor(),
* ignoring the text direction be exposing both sides of the cursor
*/
draw_arrow = (strong.x != weak.x || strong.y != weak.y);
gtk_widget_style_get (win->widget,
"cursor-aspect-ratio", &cursor_aspect_ratio,
NULL);
stem_width = strong.height * cursor_aspect_ratio + 1;
arrow_width = stem_width + 1;
/* round up to the next even number */
if (stem_width & 1)
stem_width++;
strong.x -= stem_width / 2;
strong.width += stem_width;
if (draw_arrow)
{
strong.x -= arrow_width;
strong.width += arrow_width * 2;
}
text_window_invalidate_rect (win, &strong);
if (draw_arrow) /* == have weak */
{
stem_width = weak.height * cursor_aspect_ratio + 1;
arrow_width = stem_width + 1;
/* round up to the next even number */
if (stem_width & 1)
stem_width++;
weak.x -= stem_width / 2;
weak.width += stem_width;
weak.x -= arrow_width;
weak.width += arrow_width * 2;
text_window_invalidate_rect (win, &weak);
}
}
static gint
text_window_get_width (GtkTextWindow *win)
{