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widget: Add forgotten push_group code

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... and remove the also forgotten void function that lingered around
with it.

Fixes opacity=0 parts like inactive spinners or sort indicators in
treeview headers being drawn since last commit.

Oops.
This commit is contained in:
Benjamin Otte 2016-01-19 04:24:32 +01:00
parent 580ea227a6
commit ab5dbfd1f1
1 changed files with 16 additions and 43 deletions
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59
gtk/gtkwidget.c
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@ -6957,9 +6957,18 @@ gtk_widget_draw_internal (GtkWidget *widget,
if (gdk_cairo_get_clip_rectangle (cr, NULL))
{
gboolean result;
gboolean push_group;
//gdk_window_mark_paint_from_clip (window, cr);
push_group =
widget->priv->alpha != 255 &&
(!_gtk_widget_is_toplevel (widget) ||
gtk_widget_get_visual (widget) == gdk_screen_get_rgba_visual (gtk_widget_get_screen (widget)));
if (push_group)
cairo_push_group (cr);
if (g_signal_has_handler_pending (widget, widget_signals[DRAW], 0, FALSE))
{
g_signal_emit (widget, widget_signals[DRAW],
@ -7009,6 +7018,13 @@ gtk_widget_draw_internal (GtkWidget *widget,
}
#endif
if (push_group)
{
cairo_pop_group_to_source (cr);
cairo_set_operator (cr, CAIRO_OPERATOR_OVER);
cairo_paint_with_alpha (cr, widget->priv->alpha / 255.0);
}
if (cairo_status (cr) &&
gtk_cairo_get_event_window (cr))
{
@ -7024,49 +7040,6 @@ gtk_widget_draw_internal (GtkWidget *widget,
}
}
void
_gtk_widget_draw (GtkWidget *widget,
cairo_t *cr)
{
gboolean push_group;
/* We get expose events only on native windows, so the draw
* implementation has to walk the entire widget hierarchy, except
* that it stops at native subwindows while we're in an expose
* event (_gtk_cairo_get_event () != NULL).
*
* However, we need to properly clip drawing into child windows
* to avoid drawing outside if widgets use e.g. cairo_paint(), so
* we traverse over GdkWindows as well as GtkWidgets.
*
* In order to be able to have opacity groups for entire widgets
* that consists of multiple windows we collect all the windows
* that belongs to a widget and draw them in one go. This means
* we may somewhat reorder GdkWindows when we paint them, but
* that’s not generally a problem, as if you want a guaranteed
* order you generally use a windowed widget where you control
* the window hierarchy.
*/
push_group =
widget->priv->alpha != 255 &&
(!_gtk_widget_is_toplevel (widget) ||
gtk_widget_get_visual (widget) == gdk_screen_get_rgba_visual (gtk_widget_get_screen (widget)));
if (push_group)
cairo_push_group (cr);
gtk_widget_draw_internal (widget, cr, TRUE);
if (push_group)
{
cairo_pop_group_to_source (cr);
cairo_set_operator (cr, CAIRO_OPERATOR_OVER);
cairo_paint_with_alpha (cr, widget->priv->alpha / 255.0);
}
}
/**
* gtk_widget_draw:
* @widget: the widget to draw. It must be drawable (see