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https://github.com/brl/mutter.git
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186 lines
4.4 KiB
C
186 lines
4.4 KiB
C
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/*
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* Clutter.
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*
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* An OpenGL based 'interactive canvas' library.
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*
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* Authored By Matthew Allum <mallum@openedhand.com>
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*
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* Copyright (C) 2006 OpenedHand
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*
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* This library is free software; you can redistribute it and/or
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* modify it under the terms of the GNU Lesser General Public
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* License as published by the Free Software Foundation; either
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* version 2 of the License, or (at your option) any later version.
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*
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* This library is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* Lesser General Public License for more details.
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*
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* You should have received a copy of the GNU Lesser General Public
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* License along with this library; if not, write to the
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* Free Software Foundation, Inc., 59 Temple Place - Suite 330,
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* Boston, MA 02111-1307, USA.
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*/
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#include "clutter-rectangle.h"
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#include "clutter-main.h"
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#include "clutter-private.h" /* for DBG */
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#include <GL/glx.h>
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#include <GL/gl.h>
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G_DEFINE_TYPE (ClutterRectangle, clutter_rectangle, CLUTTER_TYPE_ELEMENT);
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enum
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{
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PROP_0,
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PROP_COL
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/* FIXME: Add gradient, rounded corner props etc */
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};
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#define CLUTTER_RECTANGLE_GET_PRIVATE(obj) \
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(G_TYPE_INSTANCE_GET_PRIVATE ((obj), CLUTTER_TYPE_RECTANGLE, ClutterRectanglePrivate))
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struct _ClutterRectanglePrivate
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{
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guint32 col;
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};
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static void
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clutter_rectangle_paint (ClutterElement *self)
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{
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ClutterRectangle *rectangle = CLUTTER_RECTANGLE(self);
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ClutterRectanglePrivate *priv;
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ClutterGeometry geom;
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rectangle = CLUTTER_RECTANGLE(self);
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priv = rectangle->priv;
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glPushMatrix();
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glEnable(GL_BLEND);
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glBlendFunc(GL_SRC_ALPHA, GL_ONE_MINUS_SRC_ALPHA);
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clutter_element_get_geometry (self, &geom);
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glColor4ub(clutter_color_r(priv->col),
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clutter_color_g(priv->col),
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clutter_color_b(priv->col),
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clutter_element_get_opacity(self));
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glRecti (geom.x,
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geom.y,
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geom.x + geom.width,
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geom.y + geom.height);
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glDisable(GL_BLEND);
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glPopMatrix();
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}
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static void
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clutter_rectangle_set_property (GObject *object,
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guint prop_id,
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const GValue *value,
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GParamSpec *pspec)
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{
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ClutterRectangle *rectangle;
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ClutterRectanglePrivate *priv;
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rectangle = CLUTTER_RECTANGLE(object);
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priv = rectangle->priv;
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switch (prop_id)
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{
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case PROP_COL:
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priv->col = g_value_get_uint(value);
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clutter_element_set_opacity(CLUTTER_ELEMENT(rectangle),
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priv->col & 0xff);
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/* FIXME: queue paint */
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break;
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default:
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G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
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break;
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}
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}
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static void
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clutter_rectangle_get_property (GObject *object,
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guint prop_id,
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GValue *value,
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GParamSpec *pspec)
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{
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ClutterRectangle *rectangle;
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ClutterRectanglePrivate *priv;
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rectangle = CLUTTER_RECTANGLE(object);
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priv = rectangle->priv;
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switch (prop_id)
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{
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case PROP_COL:
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g_value_set_uint (value, priv->col);
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break;
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default:
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G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
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break;
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}
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}
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static void
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clutter_rectangle_finalize (GObject *object)
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{
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G_OBJECT_CLASS (clutter_rectangle_parent_class)->finalize (object);
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}
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static void
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clutter_rectangle_dispose (GObject *object)
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{
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G_OBJECT_CLASS (clutter_rectangle_parent_class)->dispose (object);
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}
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static void
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clutter_rectangle_class_init (ClutterRectangleClass *klass)
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{
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GObjectClass *gobject_class = G_OBJECT_CLASS (klass);
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ClutterElementClass *element_class = CLUTTER_ELEMENT_CLASS (klass);
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element_class->paint = clutter_rectangle_paint;
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gobject_class->finalize = clutter_rectangle_finalize;
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gobject_class->dispose = clutter_rectangle_dispose;
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gobject_class->set_property = clutter_rectangle_set_property;
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gobject_class->get_property = clutter_rectangle_get_property;
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g_object_class_install_property
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(gobject_class, PROP_COL,
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g_param_spec_uint ("color",
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"Rectangle Colour",
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"Rectangle Colour specified as 8 byte RGBA value",
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0,
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0xffffffff,
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0xff,
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G_PARAM_READWRITE));
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g_type_class_add_private (gobject_class, sizeof (ClutterRectanglePrivate));
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}
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static void
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clutter_rectangle_init (ClutterRectangle *self)
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{
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self->priv = CLUTTER_RECTANGLE_GET_PRIVATE (self);
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}
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ClutterElement*
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clutter_rectangle_new (guint32 colour)
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{
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return g_object_new (CLUTTER_TYPE_RECTANGLE,
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"color", colour,
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NULL);
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}
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