mutter/clutter/deprecated/clutter-rectangle.c
Emmanuele Bassi ce2d86515a rectangle: Fix the border drawing conditions
And reorganize the code a bit while we're at it.
2015-03-15 15:10:31 +00:00

603 lines
17 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.
*
* #ClutterRectangle is deprecated since Clutter 1.10. If you want an actor
* painting a solid color, you can replace it with #ClutterActor and set the
* #ClutterActor:background-color property to the desired #ClutterColor. If
* you are drawing more complex shapes, use #ClutterCanvas to draw using the
* Cairo 2D API instead.
*/
#ifdef HAVE_CONFIG_H
#include "config.h"
#endif
#define CLUTTER_DISABLE_DEPRECATION_WARNINGS
#include "deprecated/clutter-rectangle.h"
#include "deprecated/clutter-actor.h"
#include "clutter-actor-private.h"
#include "clutter-color.h"
#include "clutter-debug.h"
#include "clutter-main.h"
#include "clutter-private.h"
#include "cogl/cogl.h"
struct _ClutterRectanglePrivate
{
ClutterColor color;
ClutterColor border_color;
guint border_width;
guint has_border : 1;
};
enum
{
PROP_0,
PROP_COLOR,
PROP_BORDER_COLOR,
PROP_BORDER_WIDTH,
PROP_HAS_BORDER
/* FIXME: Add gradient, rounded corner props etc */
};
static const ClutterColor default_color = { 255, 255, 255, 255 };
static const ClutterColor default_border_color = { 0, 0, 0, 255 };
G_DEFINE_TYPE_WITH_PRIVATE (ClutterRectangle, clutter_rectangle, CLUTTER_TYPE_ACTOR)
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);
if (priv->has_border)
{
/* We paint the border and the content only if the rectangle
* is big enough to show them
*/
if ((priv->border_width * 2) < geom.width &&
(priv->border_width * 2) < geom.height)
{
/* 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
{
/* Otherwise, we draw a rectangle with the same color
* as the border, since we can only fit that into the
* allocation.
*/
tmp_alpha = clutter_actor_get_paint_opacity (self)
* priv->border_color.alpha
/ 255;
cogl_set_source_color4ub (priv->border_color.red,
priv->border_color.green,
priv->border_color.blue,
tmp_alpha);
cogl_rectangle (0, 0, geom.width, geom.height);
}
}
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));
}
static void
clutter_rectangle_init (ClutterRectangle *self)
{
ClutterRectanglePrivate *priv;
self->priv = priv = clutter_rectangle_get_instance_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 #ClutterRectangle
*
* Deprecated: 1.10: Use clutter_actor_new() instead
*/
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 #ClutterRectangle
*
* Deprecated: 1.10: Use clutter_actor_new() and
* clutter_actor_set_background_color() instead
*/
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.
*
* Deprecated: 1.10: Use #ClutterActor and clutter_actor_get_background_color()
* instead
*/
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.
*
* Deprecated: 1.10: Use #ClutterActor and clutter_actor_set_background_color()
* instead
*/
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
*
* Deprecated: 1.10: Use #ClutterActor and a #ClutterCanvas content
* to draw the border using Cairo
*/
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
*
* Deprecated: 1.10: Use #ClutterActor and a #ClutterCanvas content
* to draw the border using Cairo
*/
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
*
* Deprecated: 1.10: Use #ClutterActor and a #ClutterCanvas to draw
* the border with Cairo
*/
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
*
* Deprecated: 1.10: Use #ClutterActor and a #ClutterCanvas to draw
* the border with Cairo
*/
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);
}
}