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// Copyright (c) 2010 The Chromium Authors. All rights reserved.
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#include "base/at_exit.h"
#include "base/scoped_ptr.h"
#include "gpu/demos/framework/demo.h"
#include "gpu/demos/framework/demo_factory.h"
#include "ppapi/cpp/completion_callback.h"
#include "ppapi/cpp/instance.h"
#include "ppapi/cpp/dev/graphics_3d_dev.h"
#include "ppapi/cpp/module.h"
#include "ppapi/cpp/rect.h"
#include "ppapi/cpp/size.h"
namespace gpu {
namespace demos {
class PluginInstance : public pp::Instance {
public:
PluginInstance(PP_Instance instance, pp::Module* module)
: pp::Instance(instance),
module_(module),
demo_(CreateDemo()) {
// Set the callback object outside of the initializer list to avoid a
// compiler warning about using "this" in an initializer list.
callback_factory_.Initialize(this);
}
~PluginInstance() {
if (!graphics_.is_null()) {
graphics_.MakeCurrent();
demo_.reset();
pp::Graphics3D_Dev::ResetCurrent();
}
}
virtual void DidChangeView(const pp::Rect& position,
const pp::Rect& /*clip*/) {
if (size_ == position.size())
return;
size_ = position.size();
demo_->InitWindowSize(size_.width(), size_.height());
if (graphics_.is_null()) {
graphics_ = pp::Graphics3D_Dev(*this, 0, NULL, NULL);
if (graphics_.is_null())
return;
if (!pp::Instance::BindGraphics(graphics_))
return;
graphics_.MakeCurrent();
demo_->InitGL();
pp::Graphics3D_Dev::ResetCurrent();
}
if (demo_->IsAnimated())
Animate(0);
else
Paint();
}
void Paint() {
graphics_.MakeCurrent();
demo_->Draw();
graphics_.SwapBuffers();
pp::Graphics3D_Dev::ResetCurrent();
}
private:
void Animate(int delay) {
Paint();
module_->core()->CallOnMainThread(delay,
callback_factory_.NewCallback(&PluginInstance::Animate), delay);
}
pp::Module* module_;
scoped_ptr<Demo> demo_;
pp::Graphics3D_Dev graphics_;
pp::Size size_;
pp::CompletionCallbackFactory<PluginInstance> callback_factory_;
};
class PluginModule : public pp::Module {
public:
PluginModule() : pp::Module(), at_exit_manager_(new base::AtExitManager) {}
virtual pp::Instance* CreateInstance(PP_Instance instance) {
return new PluginInstance(instance, this);
}
private:
scoped_ptr<base::AtExitManager> at_exit_manager_;
};
} // namespace demos
} // namespace gpu
namespace pp {
Module* CreateModule() {
return new gpu::demos::PluginModule();
}
} // namespace pp
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