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/*
* empathy-rounded-rectangle.c - Source for EmpathyRoundedRectangle
* Copyright (C) 2011 Collabora Ltd.
* @author Emilio Pozuelo Monfort <emilio.pozuelo@collabora.co.uk>
*
* 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 2.1 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., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
*/
#include <math.h>
#include <clutter/clutter.h>
#include "empathy-rounded-rectangle.h"
G_DEFINE_TYPE (EmpathyRoundedRectangle,
empathy_rounded_rectangle,
CLUTTER_TYPE_CAIRO_TEXTURE)
struct _EmpathyRoundedRectanglePriv
{
ClutterColor border_color;
guint border_width;
};
static void
empathy_rounded_rectangle_paint (EmpathyRoundedRectangle *self)
{
guint width, height;
guint tmp_alpha;
cairo_t *cr;
#define RADIUS (height / 8.)
clutter_cairo_texture_get_surface_size (CLUTTER_CAIRO_TEXTURE (self),
&width, &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 (CLUTTER_ACTOR (self))
* self->priv->border_color.alpha
/ 255;
cr = clutter_cairo_texture_create (CLUTTER_CAIRO_TEXTURE (self));
cairo_set_source_rgba (cr,
self->priv->border_color.red,
self->priv->border_color.green,
self->priv->border_color.blue,
tmp_alpha);
cairo_set_line_width (cr, self->priv->border_width);
cairo_set_operator (cr, CAIRO_OPERATOR_CLEAR);
cairo_paint (cr);
cairo_set_operator (cr, CAIRO_OPERATOR_OVER);
cairo_new_sub_path (cr);
cairo_arc (cr, width - RADIUS, RADIUS, RADIUS,
-M_PI/2.0, 0);
cairo_arc (cr, width - RADIUS, height - RADIUS, RADIUS,
0, M_PI/2.0);
cairo_arc (cr, RADIUS, height - RADIUS, RADIUS,
M_PI/2.0, M_PI);
cairo_arc (cr, RADIUS, RADIUS, RADIUS,
M_PI, -M_PI/2.0);
cairo_close_path (cr);
cairo_stroke (cr);
cairo_destroy (cr);
#undef RADIUS
}
static void
empathy_rounded_rectangle_init (EmpathyRoundedRectangle *self)
{
self->priv = G_TYPE_INSTANCE_GET_PRIVATE (self,
EMPATHY_TYPE_ROUNDED_RECTANGLE, EmpathyRoundedRectanglePriv);
self->priv->border_width = 1;
}
static void
empathy_rounded_rectangle_class_init (EmpathyRoundedRectangleClass *klass)
{
g_type_class_add_private (klass, sizeof (EmpathyRoundedRectanglePriv));
}
ClutterActor *
empathy_rounded_rectangle_new (guint width,
guint height)
{
ClutterActor *self;
self = CLUTTER_ACTOR (g_object_new (EMPATHY_TYPE_ROUNDED_RECTANGLE, NULL));
clutter_cairo_texture_set_surface_size (CLUTTER_CAIRO_TEXTURE (self),
width, height);
empathy_rounded_rectangle_paint (EMPATHY_ROUNDED_RECTANGLE (self));
return self;
}
void
empathy_rounded_rectangle_set_border_width (EmpathyRoundedRectangle *self,
guint border_width)
{
self->priv->border_width = border_width;
empathy_rounded_rectangle_paint (self);
}
void
empathy_rounded_rectangle_set_border_color (EmpathyRoundedRectangle *self,
const ClutterColor *color)
{
self->priv->border_color = *color;
empathy_rounded_rectangle_paint (self);
}
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