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/*
* OWL (OpenedHand Widget Library) Colour Swatch.
*
* Author: Rob Bradford <rob@openedhand.com>
*
* Copyright (C) 2007 OpenedHand Ltd.
*
* 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 "owlcolourswatch.h"
#include <gtk/gtk.h>
G_DEFINE_TYPE (OwlColourSwatch, owl_colour_swatch, GTK_TYPE_FRAME);
#define COLOUR_SWATCH_PRIVATE(o) \
(G_TYPE_INSTANCE_GET_PRIVATE ((o), OWL_TYPE_COLOUR_SWATCH, OwlColourSwatchPrivate))
typedef struct _OwlColourSwatchPrivate OwlColourSwatchPrivate;
struct _OwlColourSwatchPrivate
{
GtkWidget *draw_area;
GdkPixbuf *pixbuf;
GdkGC *gc;
guint32 colour;
};
static void
owl_colour_swatch_get_property (GObject *object, guint property_id,
GValue *value, GParamSpec *pspec)
{
switch (property_id) {
default:
G_OBJECT_WARN_INVALID_PROPERTY_ID (object, property_id, pspec);
}
}
static void
owl_colour_swatch_set_property (GObject *object, guint property_id,
const GValue *value, GParamSpec *pspec)
{
switch (property_id) {
default:
G_OBJECT_WARN_INVALID_PROPERTY_ID (object, property_id, pspec);
}
}
static void
owl_colour_swatch_dispose (GObject *object)
{
if (G_OBJECT_CLASS (owl_colour_swatch_parent_class)->dispose)
G_OBJECT_CLASS (owl_colour_swatch_parent_class)->dispose (object);
}
static void
owl_colour_swatch_finalize (GObject *object)
{
G_OBJECT_CLASS (owl_colour_swatch_parent_class)->finalize (object);
}
static void
update_pixbuf (OwlColourSwatch *swatch)
{
OwlColourSwatchPrivate *priv = COLOUR_SWATCH_PRIVATE (swatch);
gint width = priv->draw_area->allocation.width;
gint height = priv->draw_area->allocation.height;
if (priv->pixbuf != NULL)
g_object_unref (priv->pixbuf);
priv->pixbuf = gdk_pixbuf_new (GDK_COLORSPACE_RGB, FALSE, 8, width, height);
gdk_pixbuf_fill (priv->pixbuf, priv->colour);
}
static gint
expose_event (GtkWidget *widget, GdkEventExpose *event, gpointer data)
{
OwlColourSwatch *swatch = OWL_COLOUR_SWATCH (data);
OwlColourSwatchPrivate *priv = COLOUR_SWATCH_PRIVATE (data);
gint width = priv->draw_area->allocation.width;
gint height = priv->draw_area->allocation.height;
if (priv->pixbuf == NULL ||
width != gdk_pixbuf_get_width (priv->pixbuf) ||
height != gdk_pixbuf_get_height (priv->pixbuf))
{
update_pixbuf (swatch);
}
if (priv->gc == NULL)
gdk_gc_new (widget->window);
gdk_draw_pixbuf (widget->window,
priv->gc,
priv->pixbuf,
event->area.x - widget->allocation.x,
event->area.y - widget->allocation.y,
event->area.x,
event->area.y,
event->area.width,
event->area.height,
GDK_RGB_DITHER_MAX,
event->area.x - widget->allocation.x,
event->area.y - widget->allocation.y);
return FALSE;
}
static void
owl_colour_swatch_class_init (OwlColourSwatchClass *klass)
{
GObjectClass *object_class = G_OBJECT_CLASS (klass);
g_type_class_add_private (klass, sizeof (OwlColourSwatchPrivate));
object_class->get_property = owl_colour_swatch_get_property;
object_class->set_property = owl_colour_swatch_set_property;
object_class->dispose = owl_colour_swatch_dispose;
object_class->finalize = owl_colour_swatch_finalize;
}
static void
owl_colour_swatch_init (OwlColourSwatch *self)
{
OwlColourSwatchPrivate *priv = COLOUR_SWATCH_PRIVATE (self);
priv->draw_area = gtk_alignment_new (0.5,0.5,0,0);
priv->gc = NULL;
priv->pixbuf = NULL;
g_signal_connect (priv->draw_area, "expose-event",
G_CALLBACK (expose_event), self);
priv->colour = 0xffffffff;
gtk_widget_set_size_request (GTK_WIDGET (self), 24, 24);
gtk_container_add (GTK_CONTAINER(self), priv->draw_area);
}
GtkWidget*
owl_colour_swatch_new (void)
{
return GTK_WIDGET(g_object_new (OWL_TYPE_COLOUR_SWATCH, NULL));
}
void
owl_colour_swatch_set_colour (OwlColourSwatch *self, guint32 colour)
{
OwlColourSwatchPrivate *priv = COLOUR_SWATCH_PRIVATE (self);
priv->colour = colour;
update_pixbuf (self);
gtk_widget_queue_draw (priv->draw_area);
}
guint32
owl_colour_swatch_get_colour (OwlColourSwatch *self)
{
OwlColourSwatchPrivate *priv = COLOUR_SWATCH_PRIVATE (self);
return priv->colour;
}
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