File: empathy-rounded-texture.c

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empathy 3.25.90%2Breally3.12.14-2
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/*
 * empathy-rounded-texture.c - Source for EmpathyRoundedTexture
 * 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 "config.h"
#include "empathy-rounded-texture.h"

G_DEFINE_TYPE (EmpathyRoundedTexture,
    empathy_rounded_texture,
    CLUTTER_TYPE_TEXTURE)

static void
empathy_rounded_texture_paint (ClutterActor *texture)
{
  ClutterActorBox allocation = { 0, };
  gfloat width, height;

  clutter_actor_get_allocation_box (texture, &allocation);
  clutter_actor_box_get_size (&allocation, &width, &height);

  cogl_path_new ();

  /* Create and store a path describing a rounded rectangle. The small
   * size of the preview window makes the radius of the rounded corners
   * very small too, so we can safely use a very coarse angle step
   * without loosing rendering accuracy. It also significantly reduces
   * the time spent in the underlying internal cogl path functions */
  cogl_path_round_rectangle (0, 0, width, height, height / 16., 15);

  cogl_clip_push_from_path ();

  CLUTTER_ACTOR_CLASS (empathy_rounded_texture_parent_class)->paint (texture);

  /* Flip */
  cogl_rectangle_with_texture_coords (0, 0, width, height,
      1., 0., 0., 1.);

  cogl_clip_pop ();
}

static void
empathy_rounded_texture_init (EmpathyRoundedTexture *self)
{
}

static void
empathy_rounded_texture_class_init (EmpathyRoundedTextureClass *klass)
{
  ClutterActorClass *actor_class = CLUTTER_ACTOR_CLASS (klass);

  actor_class->paint = empathy_rounded_texture_paint;
}

ClutterActor *
empathy_rounded_texture_new (void)
{
  return CLUTTER_ACTOR (
    g_object_new (EMPATHY_TYPE_ROUNDED_TEXTURE, NULL));
}