gecko/gfx/layers/ipc/CompositorParent.cpp

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/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
/* vim: set sw=2 ts=2 et tw=80 : */
/* ***** BEGIN LICENSE BLOCK *****
* Version: MPL 1.1/GPL 2.0/LGPL 2.1
*
* The contents of this file are subject to the Mozilla Public License Version
* 1.1 (the "License"); you may not use this file except in compliance with
* the License. You may obtain a copy of the License at
* http://www.mozilla.org/MPL/
*
* Software distributed under the License is distributed on an "AS IS" basis,
* WITHOUT WARRANTY OF ANY KIND, either express or implied. See the License
* for the specific language governing rights and limitations under the
* License.
*
* The Original Code is Mozilla Content App.
*
* The Initial Developer of the Original Code is
* The Mozilla Foundation.
* Portions created by the Initial Developer are Copyright (C) 2011
* the Initial Developer. All Rights Reserved.
*
* Contributor(s):
* Benoit Girard <bgirard@mozilla.com>
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* Ali Juma <ajuma@mozilla.com>
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*
* Alternatively, the contents of this file may be used under the terms of
* either the GNU General Public License Version 2 or later (the "GPL"), or
* the GNU Lesser General Public License Version 2.1 or later (the "LGPL"),
* in which case the provisions of the GPL or the LGPL are applicable instead
* of those above. If you wish to allow use of your version of this file only
* under the terms of either the GPL or the LGPL, and not to allow others to
* use your version of this file under the terms of the MPL, indicate your
* decision by deleting the provisions above and replace them with the notice
* and other provisions required by the GPL or the LGPL. If you do not delete
* the provisions above, a recipient may use your version of this file under
* the terms of any one of the MPL, the GPL or the LGPL.
*
* ***** END LICENSE BLOCK ***** */
#include "CompositorParent.h"
#include "ShadowLayersParent.h"
#include "LayerManagerOGL.h"
namespace mozilla {
namespace layers {
CompositorParent::CompositorParent()
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: mStopped(false)
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{
MOZ_COUNT_CTOR(CompositorParent);
}
CompositorParent::~CompositorParent()
{
MOZ_COUNT_DTOR(CompositorParent);
}
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void
CompositorParent::Destroy()
{
size_t numChildren = ManagedPLayersParent().Length();
NS_ABORT_IF_FALSE(0 == numChildren || 1 == numChildren,
"compositor must only have 0 or 1 layer manager");
if (numChildren) {
ShadowLayersParent* layers =
static_cast<ShadowLayersParent*>(ManagedPLayersParent()[0]);
layers->Destroy();
}
}
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bool
CompositorParent::RecvInit()
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{
CancelableTask *composeTask = NewRunnableMethod(this, &CompositorParent::Composite);
MessageLoop::current()->PostTask(FROM_HERE, composeTask);
return true;
}
bool
CompositorParent::RecvStop()
{
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mStopped = true;
Destroy();
return true;
}
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void
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CompositorParent::RequestComposition()
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{
CancelableTask *composeTask = NewRunnableMethod(this, &CompositorParent::Composite);
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MessageLoop::current()->PostTask(FROM_HERE, composeTask);
}
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void
CompositorParent::Composite()
{
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if (mStopped) {
return;
}
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if (!mLayerManager) {
CancelableTask *composeTask = NewRunnableMethod(this, &CompositorParent::Composite);
MessageLoop::current()->PostDelayedTask(FROM_HERE, composeTask, 10);
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return;
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}
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mLayerManager->EndEmptyTransaction();
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}
PLayersParent*
CompositorParent::AllocPLayers(const LayersBackend &backend, const WidgetDescriptor &widget)
{
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if (widget.type() != WidgetDescriptor::TViewWidget) {
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NS_ERROR("Invalid widget descriptor\n");
return NULL;
}
if (backend == LayerManager::LAYERS_OPENGL) {
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nsIWidget *nsWidget = (nsIWidget*)widget.get_ViewWidget().widgetPtr();
nsRefPtr<LayerManagerOGL> layerManager = new LayerManagerOGL(nsWidget);
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if (!layerManager->Initialize()) {
NS_ERROR("Failed to init OGL Layers");
return NULL;
}
ShadowLayerManager* slm = layerManager->AsShadowManager();
if (!slm) {
return NULL;
}
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void *glContext = layerManager->gl()->GetNativeData(mozilla::gl::GLContext::NativeGLContext);
NativeContext nativeContext = NativeContext((uintptr_t)glContext);
SendNativeContextCreated(nativeContext);
mLayerManager = layerManager;
return new ShadowLayersParent(slm, this);
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} else {
NS_ERROR("Unsupported backend selected for Async Compositor");
return NULL;
}
}
bool
CompositorParent::DeallocPLayers(PLayersParent* actor)
{
delete actor;
return true;
}
} // namespace layers
} // namespace mozilla