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widget: Remove gtk_widget_set_double_buffered()

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Everything is always double-buffered.
This commit is contained in:
Benjamin Otte 2016-10-11 00:17:31 +02:00
parent 36b7ad0cd2
commit 4a95f8802c
4 changed files with 6 additions and 139 deletions
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2
docs/reference/gtk/gtk4-sections.txt
View File

@ -5140,7 +5140,6 @@ gtk_widget_push_composite_child
gtk_widget_queue_draw_area
gtk_widget_queue_draw_region
gtk_widget_set_app_paintable
gtk_widget_set_double_buffered
gtk_widget_set_redraw_on_allocate
gtk_widget_mnemonic_activate
gtk_widget_class_install_style_property
@ -5206,7 +5205,6 @@ gtk_widget_get_can_focus
gtk_widget_set_can_focus
gtk_widget_get_focus_on_click
gtk_widget_set_focus_on_click
gtk_widget_get_double_buffered
gtk_widget_get_has_window
gtk_widget_set_has_window
gtk_widget_get_sensitive

136
gtk/gtkwidget.c
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@ -583,7 +583,6 @@ enum {
PROP_TOOLTIP_TEXT,
PROP_WINDOW,
PROP_OPACITY,
PROP_DOUBLE_BUFFERED,
PROP_HALIGN,
PROP_VALIGN,
PROP_MARGIN_START,
@ -1306,22 +1305,6 @@ gtk_widget_class_init (GtkWidgetClass *klass)
GDK_TYPE_WINDOW,
GTK_PARAM_READABLE);
/**
* GtkWidget:double-buffered:
*
* Whether the widget is double buffered.
*
* Since: 2.18
*
* Deprecated: 3.14: Widgets should not use this property.
*/
widget_props[PROP_DOUBLE_BUFFERED] =
g_param_spec_boolean ("double-buffered",
P_("Double Buffered"),
P_("Whether the widget is double buffered"),
TRUE,
GTK_PARAM_READWRITE|G_PARAM_EXPLICIT_NOTIFY|G_PARAM_DEPRECATED);
/**
* GtkWidget:halign:
*
@ -3403,11 +3386,6 @@ gtk_widget_set_property (GObject *object,
if (_gtk_widget_get_visible (widget))
gtk_widget_queue_tooltip_query (widget);
break;
case PROP_DOUBLE_BUFFERED:
G_GNUC_BEGIN_IGNORE_DEPRECATIONS
gtk_widget_set_double_buffered (widget, g_value_get_boolean (value));
G_GNUC_END_IGNORE_DEPRECATIONS
break;
case PROP_HALIGN:
gtk_widget_set_halign (widget, g_value_get_enum (value));
break;
@ -3557,11 +3535,6 @@ gtk_widget_get_property (GObject *object,
case PROP_WINDOW:
g_value_set_object (value, _gtk_widget_get_window (widget));
break;
case PROP_DOUBLE_BUFFERED:
G_GNUC_BEGIN_IGNORE_DEPRECATIONS
g_value_set_boolean (value, gtk_widget_get_double_buffered (widget));
G_GNUC_END_IGNORE_DEPRECATIONS
break;
case PROP_HALIGN:
g_value_set_enum (value, gtk_widget_get_halign (widget));
break;
@ -3943,7 +3916,6 @@ gtk_widget_init (GTypeInstance *instance, gpointer g_class)
priv->sensitive = TRUE;
priv->composite_child = composite_child_stack != 0;
priv->double_buffered = TRUE;
priv->redraw_on_alloc = TRUE;
priv->alloc_needed = TRUE;
priv->alloc_needed_on_child = TRUE;
@ -8617,77 +8589,6 @@ gtk_widget_get_app_paintable (GtkWidget *widget)
return widget->priv->app_paintable;
}
/**
* gtk_widget_set_double_buffered:
* @widget: a #GtkWidget
* @double_buffered: %TRUE to double-buffer a widget
*
* Widgets are double buffered by default; you can use this function
* to turn off the buffering. “Double buffered” simply means that
* gdk_window_begin_draw_frame() and gdk_window_end_draw_frame() are called
* automatically around expose events sent to the
* widget. gdk_window_begin_draw_frame() diverts all drawing to a widget's
* window to an offscreen buffer, and gdk_window_end_draw_frame() draws the
* buffer to the screen. The result is that users see the window
* update in one smooth step, and don’t see individual graphics
* primitives being rendered.
*
* In very simple terms, double buffered widgets don’t flicker,
* so you would only use this function to turn off double buffering
* if you had special needs and really knew what you were doing.
*
* Note: if you turn off double-buffering, you have to handle
* expose events, since even the clearing to the background color or
* pixmap will not happen automatically (as it is done in
* gdk_window_begin_draw_frame()).
*
* In 3.10 GTK and GDK have been restructured for translucent drawing. Since
* then expose events for double-buffered widgets are culled into a single
* event to the toplevel GDK window. If you now unset double buffering, you
* will cause a separate rendering pass for every widget. This will likely
* cause rendering problems - in particular related to stacking - and usually
* increases rendering times significantly.
*
* Deprecated: 3.14: This function does not work under non-X11 backends or with
* non-native windows.
* It should not be used in newly written code.
**/
void
gtk_widget_set_double_buffered (GtkWidget *widget,
gboolean double_buffered)
{
g_return_if_fail (GTK_IS_WIDGET (widget));
double_buffered = (double_buffered != FALSE);
if (widget->priv->double_buffered != double_buffered)
{
widget->priv->double_buffered = double_buffered;
g_object_notify_by_pspec (G_OBJECT (widget), widget_props[PROP_DOUBLE_BUFFERED]);
}
}
/**
* gtk_widget_get_double_buffered:
* @widget: a #GtkWidget
*
* Determines whether the widget is double buffered.
*
* See gtk_widget_set_double_buffered()
*
* Returns: %TRUE if the widget is double buffered
*
* Since: 2.18
**/
gboolean
gtk_widget_get_double_buffered (GtkWidget *widget)
{
g_return_val_if_fail (GTK_IS_WIDGET (widget), FALSE);
return widget->priv->double_buffered;
}
/**
* gtk_widget_set_redraw_on_allocate:
* @widget: a #GtkWidget
@ -16162,47 +16063,22 @@ gtk_widget_render (GtkWidget *widget,
GdkWindow *window,
const cairo_region_t *region)
{
GtkWidgetPrivate *priv = gtk_widget_get_instance_private (widget);
GdkDrawingContext *context;
gboolean do_clip;
cairo_t *cr;
int x, y;
gboolean is_double_buffered;
/* We take the value here, in case somebody manages to changes
* the double_buffered value inside a ::draw call, and ends up
* breaking everything.
*/
is_double_buffered = priv->double_buffered;
if (is_double_buffered)
{
/* We only render double buffered on native windows */
if (!gdk_window_has_native (window))
return;
/* We only render double buffered on native windows */
if (!gdk_window_has_native (window))
return;
context = gdk_window_begin_draw_frame (window, region);
cr = gdk_drawing_context_get_cairo_context (context);
}
else
{
/* This is annoying, but it has to stay because Firefox
* disables double buffering on a top-level GdkWindow,
* which breaks the drawing context.
*
* Candidate for deletion in the next major API bump.
*/
G_GNUC_BEGIN_IGNORE_DEPRECATIONS
cr = gdk_cairo_create (window);
G_GNUC_END_IGNORE_DEPRECATIONS
}
context = gdk_window_begin_draw_frame (window, region);
cr = gdk_drawing_context_get_cairo_context (context);
do_clip = _gtk_widget_get_translation_to_window (widget, window, &x, &y);
cairo_translate (cr, -x, -y);
gtk_widget_draw_internal (widget, cr, do_clip);
if (is_double_buffered)
gdk_window_end_draw_frame (window, context);
else
cairo_destroy (cr);
gdk_window_end_draw_frame (window, context);
}

6
gtk/gtkwidget.h
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@ -857,12 +857,6 @@ void gtk_widget_set_app_paintable (GtkWidget *widget,
GDK_AVAILABLE_IN_ALL
gboolean gtk_widget_get_app_paintable (GtkWidget *widget);
GDK_DEPRECATED_IN_3_14
void gtk_widget_set_double_buffered (GtkWidget *widget,
gboolean double_buffered);
GDK_DEPRECATED_IN_3_14
gboolean gtk_widget_get_double_buffered (GtkWidget *widget);
GDK_AVAILABLE_IN_ALL
void gtk_widget_set_redraw_on_allocate (GtkWidget *widget,
gboolean redraw_on_allocate);

1
gtk/gtkwidgetprivate.h
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@ -67,7 +67,6 @@ struct _GtkWidgetPrivate
guint has_grab : 1;
guint shadowed : 1;
guint app_paintable : 1;
guint double_buffered : 1;
guint redraw_on_alloc : 1;
guint no_show_all : 1;
guint child_visible : 1;