mutter/clutter/clutter-rectangle.c
Emmanuele Bassi f6fe9e7412 2006-06-05 Emmanuele Bassi <ebassi@openedhand.com>
* clutter-color.h:
	* clutter-color.c: Reimplement ClutterColor as a boxed type;
	add convenience API for color handling, like: add, subtract,
	shade, HSL color-space conversion, packing and unpacking.

	* clutter-private.h: Update ClutterMainContext, and export the
	main context pointer here.

	* clutter-rectangle.h:
	* clutter-rectangle.c: Update the color-related code; make
	clutter_rectangle_new() and empty constructor and provide
	clutter_rectangle_new_with_color(); provide color setter
	and getter API.

	* clutter-label.h:
	* clutter-label.c: Rename the "font" property to "font-name";
	update the color-related code to the new ClutterColor object;
	rename clutter_label_new() to clutter_label_new_with_text(),
	and add setters and getters for the properties.

	* clutter-marshal.list: Add VOID:OBJECT and VOID:BOXED marshallers
	generators.

	* clutter-stage.h:
	* clutter-stage.c: Rework the API: provide a default constructor
	for a singleton object, named clutter_stage_get_default(), which
	supercedes the clutter_stage() function in clutter-main; provide
	new events: button-press-event, button-release-event,
	key-press-event and key-release-event; update the color-related
	code;

	(clutter_stage_snapshot): Allow negative width and height when
	taking a snapshot (meaning: use full width/height).

	(clutter_stage_get_element_at_pos): Rename clutter_stage_pick().

	* clutter-element.c (clutter_element_paint): Clean up the
	stage and color related code.

	* clutter-event.h:
	* clutter-event.c: Add generic ClutterAnyEvent type; add
	clutter_event_new(), clutter_event_copy() and clutter_event_free();
	make ClutterEvent a boxed type.

	* clutter-main.h:
	* clutter-main.c: Remove clutter_stage(); add clutter_main_quit(),
	for cleanly quitting from clutter_main(); add multiple mainloops
	support; allocate the ClutterCntx instead of adding it to the
	stack; re-work the ClutterEvent dispatching.

	* clutter-group.c (clutter_group_add), (clutter_group_remove): Keep
	a reference on the element when added to a ClutterGroup.

	* examples/rects.py
	* examples/test.c:
	* examples/test-text.c:
	* examples/video-cube.c:
	* examples/super-oh.c:
	* examples/test-video.c: Update.
2006-06-05 13:38:31 +00:00

257 lines
6.1 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, write to the
* Free Software Foundation, Inc., 59 Temple Place - Suite 330,
* Boston, MA 02111-1307, USA.
*/
#include "clutter-rectangle.h"
#include "clutter-main.h"
#include "clutter-private.h" /* for DBG */
#include <GL/glx.h>
#include <GL/gl.h>
G_DEFINE_TYPE (ClutterRectangle, clutter_rectangle, CLUTTER_TYPE_ELEMENT);
enum
{
PROP_0,
PROP_COLOR
/* 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;
};
static void
clutter_rectangle_paint (ClutterElement *self)
{
ClutterRectangle *rectangle = CLUTTER_RECTANGLE(self);
ClutterRectanglePrivate *priv;
ClutterGeometry geom;
rectangle = CLUTTER_RECTANGLE(self);
priv = rectangle->priv;
glPushMatrix();
glEnable(GL_BLEND);
glBlendFunc(GL_SRC_ALPHA, GL_ONE_MINUS_SRC_ALPHA);
clutter_element_get_geometry (self, &geom);
glColor4ub(priv->color.red,
priv->color.green,
priv->color.blue,
clutter_element_get_opacity (self));
glRecti (geom.x,
geom.y,
geom.x + geom.width,
geom.y + geom.height);
glDisable(GL_BLEND);
glPopMatrix();
}
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, g_value_get_boxed (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)
{
ClutterRectangle *rectangle = CLUTTER_RECTANGLE(object);
ClutterColor color;
switch (prop_id)
{
case PROP_COLOR:
clutter_rectangle_get_color (rectangle, &color);
g_value_set_boxed (value, &color);
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);
ClutterElementClass *element_class = CLUTTER_ELEMENT_CLASS (klass);
element_class->paint = clutter_rectangle_paint;
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;
g_object_class_install_property
(gobject_class, PROP_COLOR,
g_param_spec_boxed ("color",
"Color",
"The color of the rectangle",
CLUTTER_TYPE_COLOR,
G_PARAM_READWRITE));
g_type_class_add_private (gobject_class, sizeof (ClutterRectanglePrivate));
}
static void
clutter_rectangle_init (ClutterRectangle *self)
{
self->priv = CLUTTER_RECTANGLE_GET_PRIVATE (self);
self->priv->color.red = 0xff;
self->priv->color.green = 0xff;
self->priv->color.blue = 0xff;
self->priv->color.alpha = 0xff;
}
/**
* clutter_rectangle_new:
*
* Creates a new #ClutterElement with a rectangular shape.
*
* Return value: a new #ClutterElement
*/
ClutterElement*
clutter_rectangle_new (void)
{
return g_object_new (CLUTTER_TYPE_RECTANGLE, NULL);
}
/**
* clutter_rectangle_new_with_color:
* @color: a #ClutterColor
*
* Creates a new #ClutterElement with a rectangular shape
* and with @color.
*
* Return value: a new #ClutterElement
*/
ClutterElement *
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: 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);
priv = rectangle->priv;
priv->color.red = color->red;
priv->color.green = color->green;
priv->color.blue = color->blue;
priv->color.alpha = color->alpha;
clutter_element_set_opacity (CLUTTER_ELEMENT (rectangle),
priv->color.alpha);
if (CLUTTER_ELEMENT_IS_VISIBLE (CLUTTER_ELEMENT (rectangle)))
clutter_element_queue_redraw (CLUTTER_ELEMENT (rectangle));
g_object_notify (G_OBJECT (rectangle), "color");
}