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/*
* Copyright (C) 2011 Collabora Ltd.
* Copyright (C) 2012 Igalia, S.L.
*
* 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., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
*/
#include "config.h"
#include "AcceleratedCompositingContext.h"
#if USE(ACCELERATED_COMPOSITING) && USE(CLUTTER)
#include "Frame.h"
#include "FrameView.h"
#include "GraphicsLayer.h"
#include "NotImplemented.h"
#include "webkitwebviewprivate.h"
#include <clutter-gtk/clutter-gtk.h>
#include <clutter/clutter.h>
using namespace WebCore;
namespace WebKit {
AcceleratedCompositingContext::AcceleratedCompositingContext(WebKitWebView* webView)
: m_webView(webView)
, m_layerFlushTimerCallbackId(0)
, m_rootGraphicsLayer(0)
, m_rootLayerEmbedder(0)
{
}
AcceleratedCompositingContext::~AcceleratedCompositingContext()
{
if (m_layerFlushTimerCallbackId)
g_source_remove(m_layerFlushTimerCallbackId);
}
bool AcceleratedCompositingContext::enabled()
{
return m_rootGraphicsLayer;
}
bool AcceleratedCompositingContext::renderLayersToWindow(cairo_t*, const IntRect& clipRect)
{
notImplemented();
return false;
}
void AcceleratedCompositingContext::setRootCompositingLayer(GraphicsLayer* graphicsLayer)
{
if (!graphicsLayer) {
gtk_container_remove(GTK_CONTAINER(m_webView), m_rootLayerEmbedder);
m_rootLayerEmbedder = 0;
m_rootGraphicsLayer = 0;
return;
}
// Create an instance of GtkClutterEmbed to host actors as web layers.
if (!m_rootLayerEmbedder) {
m_rootLayerEmbedder = gtk_clutter_embed_new();
gtk_container_add(GTK_CONTAINER(m_webView), m_rootLayerEmbedder);
gtk_widget_show(m_rootLayerEmbedder);
}
// Add a root layer to the stage.
if (graphicsLayer) {
m_rootGraphicsLayer = graphicsLayer;
ClutterColor stageColor = { 0xFF, 0xFF, 0xFF, 0xFF };
ClutterActor* stage = gtk_clutter_embed_get_stage(GTK_CLUTTER_EMBED(m_rootLayerEmbedder));
clutter_stage_set_color(CLUTTER_STAGE(stage), &stageColor);
clutter_container_add_actor(CLUTTER_CONTAINER(stage), m_rootGraphicsLayer->platformLayer());
clutter_actor_show_all(stage);
}
}
void AcceleratedCompositingContext::setNonCompositedContentsNeedDisplay(const IntRect& rect)
{
if (!m_rootGraphicsLayer)
return;
if (rect.isEmpty()) {
m_rootGraphicsLayer->setNeedsDisplay();
return;
}
m_rootGraphicsLayer->setNeedsDisplayInRect(rect);
}
void AcceleratedCompositingContext::resizeRootLayer(const IntSize& size)
{
if (!m_rootLayerEmbedder)
return;
GtkAllocation allocation;
allocation.x = 0;
allocation.y = 0;
allocation.width = size.width();
allocation.height = size.height();
gtk_widget_size_allocate(GTK_WIDGET(m_rootLayerEmbedder), &allocation);
}
void AcceleratedCompositingContext::scrollNonCompositedContents(const IntRect& scrollRect, const IntSize& scrollOffset)
{
notImplemented();
}
static gboolean flushAndRenderLayersCallback(AcceleratedCompositingContext* context)
{
context->flushAndRenderLayers();
return FALSE;
}
void AcceleratedCompositingContext::scheduleLayerFlush()
{
if (m_layerFlushTimerCallbackId)
return;
// We use a GLib timer because otherwise GTK+ event handling during
// dragging can starve WebCore timers, which have a lower priority.
m_layerFlushTimerCallbackId = g_timeout_add_full(GDK_PRIORITY_EVENTS, 0, reinterpret_cast<GSourceFunc>(flushAndRenderLayersCallback), this, 0);
}
bool AcceleratedCompositingContext::flushPendingLayerChanges()
{
if (m_rootGraphicsLayer)
m_rootGraphicsLayer->flushCompositingStateForThisLayerOnly();
return core(m_webView)->mainFrame()->view()->flushCompositingStateIncludingSubframes();
}
void AcceleratedCompositingContext::flushAndRenderLayers()
{
m_layerFlushTimerCallbackId = 0;
flushPendingLayerChanges();
if (!m_rootGraphicsLayer)
return;
renderLayersToWindow(0, IntRect());
}
void AcceleratedCompositingContext::notifyAnimationStarted(const WebCore::GraphicsLayer*, double time)
{
ASSERT_NOT_REACHED();
}
void AcceleratedCompositingContext::notifyFlushRequired(const WebCore::GraphicsLayer*)
{
ASSERT_NOT_REACHED();
}
void AcceleratedCompositingContext::paintContents(const WebCore::GraphicsLayer*, WebCore::GraphicsContext&, WebCore::GraphicsLayerPaintingPhase, const WebCore::IntRect&)
{
ASSERT_NOT_REACHED();
}
} // namespace WebKit
#endif // USE(ACCELERATED_COMPOSITING) && USE(CLUTTER)
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