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// Copyright 2017 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/command_line.h"
#include "components/exo/wayland/clients/client_base.h"
#include "components/exo/wayland/clients/client_helper.h"
#include "third_party/skia/include/core/SkCanvas.h"
#include "third_party/skia/include/core/SkSurface.h"
#include "third_party/skia/include/gpu/GrContext.h"
#include "ui/gl/gl_bindings.h"
namespace exo {
namespace wayland {
namespace clients {
namespace {
void FrameCallback(void* data, wl_callback* callback, uint32_t time) {
bool* callback_pending = static_cast<bool*>(data);
*callback_pending = false;
}
} // namespace
class SimpleClient : public ClientBase {
public:
SimpleClient() {}
void Run(const ClientBase::InitParams& params);
private:
DISALLOW_COPY_AND_ASSIGN(SimpleClient);
};
void SimpleClient::Run(const ClientBase::InitParams& params) {
if (!ClientBase::Init(params))
return;
bool callback_pending = false;
std::unique_ptr<wl_callback> frame_callback;
wl_callback_listener frame_listener = {FrameCallback};
size_t frame_count = 0;
do {
if (callback_pending)
continue;
Buffer* buffer = buffers_.front().get();
SkCanvas* canvas = buffer->sk_surface->getCanvas();
static const SkColor kColors[] = {SK_ColorRED, SK_ColorBLACK};
canvas->clear(kColors[frame_count % arraysize(kColors)]);
++frame_count;
if (gr_context_) {
gr_context_->flush();
glFinish();
}
wl_surface_set_buffer_scale(surface_.get(), scale_);
wl_surface_damage(surface_.get(), 0, 0, width_ / scale_, height_ / scale_);
wl_surface_attach(surface_.get(), buffer->buffer.get(), 0, 0);
frame_callback.reset(wl_surface_frame(surface_.get()));
wl_callback_add_listener(frame_callback.get(), &frame_listener,
&callback_pending);
wl_surface_commit(surface_.get());
wl_display_flush(display_.get());
} while (wl_display_dispatch(display_.get()) != -1);
}
} // namespace clients
} // namespace wayland
} // namespace exo
int main(int argc, char* argv[]) {
base::AtExitManager exit_manager;
base::CommandLine::Init(argc, argv);
base::CommandLine* command_line = base::CommandLine::ForCurrentProcess();
exo::wayland::clients::ClientBase::InitParams params;
if (!params.FromCommandLine(*command_line))
return 1;
exo::wayland::clients::SimpleClient client;
client.Run(params);
return 1;
}
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