mirror of
https://github.com/brl/mutter.git
synced 2024-09-20 14:35:48 -04:00
701440efd8
This adds a virtual to ClutterActor so that an actor subclass can report whether it has overlapping primitives. ClutterActor uses this to determine whether it needs to use ClutterFlattenEffect to implement the opacity property. The default implementation of the virtual returns TRUE which means that most actors will end up being redirected offscreen when the opacity != 255. ClutterTexture and ClutterRectangle override this to return FALSE because they should never need to be redirected. ClutterClone overrides it to divert to the source. The values for the ClutterOffscreenRedirect enum have changed to: AUTOMATIC_FOR_OPACITY The actor will only be redirected if has_overlaps returns TRUE and the opacity is < 255 ALWAYS_FOR_OPACITY The actor will always be redirected if the opacity < 255 regardless of the return value of has_overlaps ALWAYS The actor will always be redirected offscreen. This means that the property can't be used to prevent the actor from being redirected but only to increase the likelihood that it will be redirected. ClutterActor now adds and removes the flatten effect depending on whether flattening is needed directly in clutter_actor_paint(). There are new internal versions of add/remove_effect that don't queue a redraw. This means that ClutterFlattenEffect is now just a no-op subclass of ClutterOffscreen. It is only needed because ClutterOffscreen is abstract. Removing the effect also makes it so that the cached image will be freed as soon as an actor is repainted without being flattened.
554 lines
15 KiB
C
554 lines
15 KiB
C
/*
|
|
* Clutter.
|
|
*
|
|
* An OpenGL based 'interactive canvas' library.
|
|
*
|
|
* Authored By Matthew Allum <mallum@openedhand.com>
|
|
*
|
|
* Copyright (C) 2006 OpenedHand
|
|
*
|
|
* This library is free software; you can redistribute it and/or
|
|
* modify it under the terms of the GNU Lesser General Public
|
|
* License as published by the Free Software Foundation; either
|
|
* version 2 of the License, or (at your option) any later version.
|
|
*
|
|
* This library is distributed in the hope that it will be useful,
|
|
* but WITHOUT ANY WARRANTY; without even the implied warranty of
|
|
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
|
|
* Lesser General Public License for more details.
|
|
*
|
|
* You should have received a copy of the GNU Lesser General Public
|
|
* License along with this library. If not, see <http://www.gnu.org/licenses/>.
|
|
*
|
|
*
|
|
*/
|
|
|
|
/**
|
|
* SECTION:clutter-rectangle
|
|
* @short_description: An actor that displays a simple rectangle.
|
|
*
|
|
* #ClutterRectangle is a #ClutterActor which draws a simple filled rectangle.
|
|
*/
|
|
#ifdef HAVE_CONFIG_H
|
|
#include "config.h"
|
|
#endif
|
|
|
|
#include "clutter-actor-private.h"
|
|
#include "clutter-color.h"
|
|
#include "clutter-debug.h"
|
|
#include "clutter-main.h"
|
|
#include "clutter-private.h"
|
|
#include "clutter-rectangle.h"
|
|
|
|
#include "cogl/cogl.h"
|
|
|
|
G_DEFINE_TYPE (ClutterRectangle, clutter_rectangle, CLUTTER_TYPE_ACTOR);
|
|
|
|
enum
|
|
{
|
|
PROP_0,
|
|
|
|
PROP_COLOR,
|
|
PROP_BORDER_COLOR,
|
|
PROP_BORDER_WIDTH,
|
|
PROP_HAS_BORDER
|
|
|
|
/* FIXME: Add gradient, rounded corner props etc */
|
|
};
|
|
|
|
#define CLUTTER_RECTANGLE_GET_PRIVATE(obj) \
|
|
(G_TYPE_INSTANCE_GET_PRIVATE ((obj), CLUTTER_TYPE_RECTANGLE, ClutterRectanglePrivate))
|
|
|
|
struct _ClutterRectanglePrivate
|
|
{
|
|
ClutterColor color;
|
|
ClutterColor border_color;
|
|
|
|
guint border_width;
|
|
|
|
guint has_border : 1;
|
|
};
|
|
|
|
static const ClutterColor default_color = { 255, 255, 255, 255 };
|
|
static const ClutterColor default_border_color = { 0, 0, 0, 255 };
|
|
|
|
static void
|
|
clutter_rectangle_paint (ClutterActor *self)
|
|
{
|
|
ClutterRectanglePrivate *priv = CLUTTER_RECTANGLE (self)->priv;
|
|
ClutterGeometry geom;
|
|
guint8 tmp_alpha;
|
|
|
|
CLUTTER_NOTE (PAINT,
|
|
"painting rect '%s'",
|
|
clutter_actor_get_name (self) ? clutter_actor_get_name (self)
|
|
: "unknown");
|
|
clutter_actor_get_allocation_geometry (self, &geom);
|
|
|
|
/* parent paint call will have translated us into position so
|
|
* paint from 0, 0
|
|
*/
|
|
if (priv->has_border)
|
|
{
|
|
/* compute the composited opacity of the actor taking into
|
|
* account the opacity of the color set by the user
|
|
*/
|
|
tmp_alpha = clutter_actor_get_paint_opacity (self)
|
|
* priv->border_color.alpha
|
|
/ 255;
|
|
|
|
/* paint the border */
|
|
cogl_set_source_color4ub (priv->border_color.red,
|
|
priv->border_color.green,
|
|
priv->border_color.blue,
|
|
tmp_alpha);
|
|
|
|
/* this sucks, but it's the only way to make a border */
|
|
cogl_rectangle (priv->border_width, 0,
|
|
geom.width,
|
|
priv->border_width);
|
|
|
|
cogl_rectangle (geom.width - priv->border_width,
|
|
priv->border_width,
|
|
geom.width,
|
|
geom.height);
|
|
|
|
cogl_rectangle (0, geom.height - priv->border_width,
|
|
geom.width - priv->border_width,
|
|
geom.height);
|
|
|
|
cogl_rectangle (0, 0,
|
|
priv->border_width,
|
|
geom.height - priv->border_width);
|
|
|
|
tmp_alpha = clutter_actor_get_paint_opacity (self)
|
|
* priv->color.alpha
|
|
/ 255;
|
|
|
|
/* now paint the rectangle */
|
|
cogl_set_source_color4ub (priv->color.red,
|
|
priv->color.green,
|
|
priv->color.blue,
|
|
tmp_alpha);
|
|
|
|
cogl_rectangle (priv->border_width, priv->border_width,
|
|
geom.width - priv->border_width,
|
|
geom.height - priv->border_width);
|
|
}
|
|
else
|
|
{
|
|
/* compute the composited opacity of the actor taking into
|
|
* account the opacity of the color set by the user
|
|
*/
|
|
tmp_alpha = clutter_actor_get_paint_opacity (self)
|
|
* priv->color.alpha
|
|
/ 255;
|
|
|
|
cogl_set_source_color4ub (priv->color.red,
|
|
priv->color.green,
|
|
priv->color.blue,
|
|
tmp_alpha);
|
|
|
|
cogl_rectangle (0, 0, geom.width, geom.height);
|
|
}
|
|
}
|
|
|
|
static gboolean
|
|
clutter_rectangle_get_paint_volume (ClutterActor *self,
|
|
ClutterPaintVolume *volume)
|
|
{
|
|
return _clutter_actor_set_default_paint_volume (self,
|
|
CLUTTER_TYPE_RECTANGLE,
|
|
volume);
|
|
}
|
|
|
|
static gboolean
|
|
clutter_rectangle_has_overlaps (ClutterActor *self)
|
|
{
|
|
/* Rectangles never need an offscreen redirect because there are
|
|
never any overlapping primitives */
|
|
return FALSE;
|
|
}
|
|
|
|
static void
|
|
clutter_rectangle_set_property (GObject *object,
|
|
guint prop_id,
|
|
const GValue *value,
|
|
GParamSpec *pspec)
|
|
{
|
|
ClutterRectangle *rectangle = CLUTTER_RECTANGLE(object);
|
|
|
|
switch (prop_id)
|
|
{
|
|
case PROP_COLOR:
|
|
clutter_rectangle_set_color (rectangle, clutter_value_get_color (value));
|
|
break;
|
|
case PROP_BORDER_COLOR:
|
|
clutter_rectangle_set_border_color (rectangle,
|
|
clutter_value_get_color (value));
|
|
break;
|
|
case PROP_BORDER_WIDTH:
|
|
clutter_rectangle_set_border_width (rectangle,
|
|
g_value_get_uint (value));
|
|
break;
|
|
case PROP_HAS_BORDER:
|
|
rectangle->priv->has_border = g_value_get_boolean (value);
|
|
break;
|
|
default:
|
|
G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
|
|
break;
|
|
}
|
|
}
|
|
|
|
static void
|
|
clutter_rectangle_get_property (GObject *object,
|
|
guint prop_id,
|
|
GValue *value,
|
|
GParamSpec *pspec)
|
|
{
|
|
ClutterRectanglePrivate *priv = CLUTTER_RECTANGLE(object)->priv;
|
|
|
|
switch (prop_id)
|
|
{
|
|
case PROP_COLOR:
|
|
clutter_value_set_color (value, &priv->color);
|
|
break;
|
|
case PROP_BORDER_COLOR:
|
|
clutter_value_set_color (value, &priv->border_color);
|
|
break;
|
|
case PROP_BORDER_WIDTH:
|
|
g_value_set_uint (value, priv->border_width);
|
|
break;
|
|
case PROP_HAS_BORDER:
|
|
g_value_set_boolean (value, priv->has_border);
|
|
break;
|
|
default:
|
|
G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
|
|
break;
|
|
}
|
|
}
|
|
|
|
|
|
static void
|
|
clutter_rectangle_finalize (GObject *object)
|
|
{
|
|
G_OBJECT_CLASS (clutter_rectangle_parent_class)->finalize (object);
|
|
}
|
|
|
|
static void
|
|
clutter_rectangle_dispose (GObject *object)
|
|
{
|
|
G_OBJECT_CLASS (clutter_rectangle_parent_class)->dispose (object);
|
|
}
|
|
|
|
|
|
static void
|
|
clutter_rectangle_class_init (ClutterRectangleClass *klass)
|
|
{
|
|
GObjectClass *gobject_class = G_OBJECT_CLASS (klass);
|
|
ClutterActorClass *actor_class = CLUTTER_ACTOR_CLASS (klass);
|
|
GParamSpec *pspec;
|
|
|
|
actor_class->paint = clutter_rectangle_paint;
|
|
actor_class->get_paint_volume = clutter_rectangle_get_paint_volume;
|
|
actor_class->has_overlaps = clutter_rectangle_has_overlaps;
|
|
|
|
gobject_class->finalize = clutter_rectangle_finalize;
|
|
gobject_class->dispose = clutter_rectangle_dispose;
|
|
gobject_class->set_property = clutter_rectangle_set_property;
|
|
gobject_class->get_property = clutter_rectangle_get_property;
|
|
|
|
/**
|
|
* ClutterRectangle:color:
|
|
*
|
|
* The color of the rectangle.
|
|
*/
|
|
pspec = clutter_param_spec_color ("color",
|
|
P_("Color"),
|
|
P_("The color of the rectangle"),
|
|
&default_color,
|
|
CLUTTER_PARAM_READWRITE);
|
|
g_object_class_install_property (gobject_class, PROP_COLOR, pspec);
|
|
|
|
/**
|
|
* ClutterRectangle:border-color:
|
|
*
|
|
* The color of the border of the rectangle.
|
|
*
|
|
* Since: 0.2
|
|
*/
|
|
pspec = clutter_param_spec_color ("border-color",
|
|
P_("Border Color"),
|
|
P_("The color of the border of the rectangle"),
|
|
&default_border_color,
|
|
CLUTTER_PARAM_READWRITE);
|
|
g_object_class_install_property (gobject_class, PROP_BORDER_COLOR, pspec);
|
|
|
|
/**
|
|
* ClutterRectangle:border-width:
|
|
*
|
|
* The width of the border of the rectangle, in pixels.
|
|
*
|
|
* Since: 0.2
|
|
*/
|
|
g_object_class_install_property (gobject_class,
|
|
PROP_BORDER_WIDTH,
|
|
g_param_spec_uint ("border-width",
|
|
P_("Border Width"),
|
|
P_("The width of the border of the rectangle"),
|
|
0, G_MAXUINT,
|
|
0,
|
|
CLUTTER_PARAM_READWRITE));
|
|
/**
|
|
* ClutterRectangle:has-border:
|
|
*
|
|
* Whether the #ClutterRectangle should be displayed with a border.
|
|
*
|
|
* Since: 0.2
|
|
*/
|
|
g_object_class_install_property (gobject_class,
|
|
PROP_HAS_BORDER,
|
|
g_param_spec_boolean ("has-border",
|
|
P_("Has Border"),
|
|
P_("Whether the rectangle should have a border"),
|
|
FALSE,
|
|
CLUTTER_PARAM_READWRITE));
|
|
|
|
g_type_class_add_private (gobject_class, sizeof (ClutterRectanglePrivate));
|
|
}
|
|
|
|
static void
|
|
clutter_rectangle_init (ClutterRectangle *self)
|
|
{
|
|
ClutterRectanglePrivate *priv;
|
|
|
|
self->priv = priv = CLUTTER_RECTANGLE_GET_PRIVATE (self);
|
|
|
|
priv->color = default_color;
|
|
priv->border_color = default_border_color;
|
|
|
|
priv->border_width = 0;
|
|
|
|
priv->has_border = FALSE;
|
|
}
|
|
|
|
/**
|
|
* clutter_rectangle_new:
|
|
*
|
|
* Creates a new #ClutterActor with a rectangular shape.
|
|
*
|
|
* Return value: a new #ClutterActor
|
|
*/
|
|
ClutterActor*
|
|
clutter_rectangle_new (void)
|
|
{
|
|
return g_object_new (CLUTTER_TYPE_RECTANGLE, NULL);
|
|
}
|
|
|
|
/**
|
|
* clutter_rectangle_new_with_color:
|
|
* @color: a #ClutterColor
|
|
*
|
|
* Creates a new #ClutterActor with a rectangular shape
|
|
* and of the given @color.
|
|
*
|
|
* Return value: a new #ClutterActor
|
|
*/
|
|
ClutterActor *
|
|
clutter_rectangle_new_with_color (const ClutterColor *color)
|
|
{
|
|
return g_object_new (CLUTTER_TYPE_RECTANGLE,
|
|
"color", color,
|
|
NULL);
|
|
}
|
|
|
|
/**
|
|
* clutter_rectangle_get_color:
|
|
* @rectangle: a #ClutterRectangle
|
|
* @color: (out caller-allocates): return location for a #ClutterColor
|
|
*
|
|
* Retrieves the color of @rectangle.
|
|
*/
|
|
void
|
|
clutter_rectangle_get_color (ClutterRectangle *rectangle,
|
|
ClutterColor *color)
|
|
{
|
|
ClutterRectanglePrivate *priv;
|
|
|
|
g_return_if_fail (CLUTTER_IS_RECTANGLE (rectangle));
|
|
g_return_if_fail (color != NULL);
|
|
|
|
priv = rectangle->priv;
|
|
|
|
color->red = priv->color.red;
|
|
color->green = priv->color.green;
|
|
color->blue = priv->color.blue;
|
|
color->alpha = priv->color.alpha;
|
|
}
|
|
|
|
/**
|
|
* clutter_rectangle_set_color:
|
|
* @rectangle: a #ClutterRectangle
|
|
* @color: a #ClutterColor
|
|
*
|
|
* Sets the color of @rectangle.
|
|
*/
|
|
void
|
|
clutter_rectangle_set_color (ClutterRectangle *rectangle,
|
|
const ClutterColor *color)
|
|
{
|
|
ClutterRectanglePrivate *priv;
|
|
|
|
g_return_if_fail (CLUTTER_IS_RECTANGLE (rectangle));
|
|
g_return_if_fail (color != NULL);
|
|
|
|
g_object_ref (rectangle);
|
|
|
|
priv = rectangle->priv;
|
|
|
|
priv->color.red = color->red;
|
|
priv->color.green = color->green;
|
|
priv->color.blue = color->blue;
|
|
priv->color.alpha = color->alpha;
|
|
|
|
#if 0
|
|
/* FIXME - appears to be causing border to always get drawn */
|
|
if (clutter_color_equal (&priv->color, &priv->border_color))
|
|
priv->has_border = FALSE;
|
|
else
|
|
priv->has_border = TRUE;
|
|
#endif
|
|
|
|
clutter_actor_queue_redraw (CLUTTER_ACTOR (rectangle));
|
|
|
|
g_object_notify (G_OBJECT (rectangle), "color");
|
|
g_object_notify (G_OBJECT (rectangle), "has-border");
|
|
g_object_unref (rectangle);
|
|
}
|
|
|
|
/**
|
|
* clutter_rectangle_get_border_width:
|
|
* @rectangle: a #ClutterRectangle
|
|
*
|
|
* Gets the width (in pixels) of the border used by @rectangle
|
|
*
|
|
* Return value: the border's width
|
|
*
|
|
* Since: 0.2
|
|
*/
|
|
guint
|
|
clutter_rectangle_get_border_width (ClutterRectangle *rectangle)
|
|
{
|
|
g_return_val_if_fail (CLUTTER_IS_RECTANGLE (rectangle), 0);
|
|
|
|
return rectangle->priv->border_width;
|
|
}
|
|
|
|
/**
|
|
* clutter_rectangle_set_border_width:
|
|
* @rectangle: a #ClutterRectangle
|
|
* @width: the width of the border
|
|
*
|
|
* Sets the width (in pixel) of the border used by @rectangle.
|
|
* A @width of 0 will unset the border.
|
|
*
|
|
* Since: 0.2
|
|
*/
|
|
void
|
|
clutter_rectangle_set_border_width (ClutterRectangle *rectangle,
|
|
guint width)
|
|
{
|
|
ClutterRectanglePrivate *priv;
|
|
|
|
g_return_if_fail (CLUTTER_IS_RECTANGLE (rectangle));
|
|
priv = rectangle->priv;
|
|
|
|
if (priv->border_width != width)
|
|
{
|
|
g_object_ref (rectangle);
|
|
|
|
priv->border_width = width;
|
|
|
|
if (priv->border_width != 0)
|
|
priv->has_border = TRUE;
|
|
else
|
|
priv->has_border = FALSE;
|
|
|
|
clutter_actor_queue_redraw (CLUTTER_ACTOR (rectangle));
|
|
|
|
g_object_notify (G_OBJECT (rectangle), "border-width");
|
|
g_object_notify (G_OBJECT (rectangle), "has-border");
|
|
g_object_unref (rectangle);
|
|
}
|
|
}
|
|
|
|
/**
|
|
* clutter_rectangle_get_border_color:
|
|
* @rectangle: a #ClutterRectangle
|
|
* @color: (out caller-allocates): return location for a #ClutterColor
|
|
*
|
|
* Gets the color of the border used by @rectangle and places
|
|
* it into @color.
|
|
*
|
|
* Since: 0.2
|
|
*/
|
|
void
|
|
clutter_rectangle_get_border_color (ClutterRectangle *rectangle,
|
|
ClutterColor *color)
|
|
{
|
|
ClutterRectanglePrivate *priv;
|
|
|
|
g_return_if_fail (CLUTTER_IS_RECTANGLE (rectangle));
|
|
g_return_if_fail (color != NULL);
|
|
|
|
priv = rectangle->priv;
|
|
|
|
color->red = priv->border_color.red;
|
|
color->green = priv->border_color.green;
|
|
color->blue = priv->border_color.blue;
|
|
color->alpha = priv->border_color.alpha;
|
|
}
|
|
|
|
/**
|
|
* clutter_rectangle_set_border_color:
|
|
* @rectangle: a #ClutterRectangle
|
|
* @color: the color of the border
|
|
*
|
|
* Sets the color of the border used by @rectangle using @color
|
|
*/
|
|
void
|
|
clutter_rectangle_set_border_color (ClutterRectangle *rectangle,
|
|
const ClutterColor *color)
|
|
{
|
|
ClutterRectanglePrivate *priv;
|
|
|
|
g_return_if_fail (CLUTTER_IS_RECTANGLE (rectangle));
|
|
g_return_if_fail (color != NULL);
|
|
|
|
priv = rectangle->priv;
|
|
|
|
if (priv->border_color.red != color->red ||
|
|
priv->border_color.green != color->green ||
|
|
priv->border_color.blue != color->blue ||
|
|
priv->border_color.alpha != color->alpha)
|
|
{
|
|
g_object_ref (rectangle);
|
|
|
|
priv->border_color.red = color->red;
|
|
priv->border_color.green = color->green;
|
|
priv->border_color.blue = color->blue;
|
|
priv->border_color.alpha = color->alpha;
|
|
|
|
if (clutter_color_equal (&priv->color, &priv->border_color))
|
|
priv->has_border = FALSE;
|
|
else
|
|
priv->has_border = TRUE;
|
|
|
|
clutter_actor_queue_redraw (CLUTTER_ACTOR (rectangle));
|
|
|
|
g_object_notify (G_OBJECT (rectangle), "border-color");
|
|
g_object_notify (G_OBJECT (rectangle), "has-border");
|
|
g_object_unref (rectangle);
|
|
}
|
|
}
|