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// Copyright 2018 The Chromium Authors
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#include "components/exo/wayland/clients/fullscreen_shell.h"
#include "base/command_line.h"
#include "base/logging.h"
#include "base/strings/string_number_conversions.h"
#include "third_party/skia/include/core/SkCanvas.h"
#include "third_party/skia/include/core/SkRefCnt.h"
#include "third_party/skia/include/core/SkSurface.h"
#include "third_party/skia/include/gpu/ganesh/GrBackendSurface.h"
#include "third_party/skia/include/gpu/ganesh/GrDirectContext.h"
#include "third_party/skia/include/gpu/ganesh/gl/GrGLAssembleInterface.h"
#include "third_party/skia/include/gpu/ganesh/gl/GrGLInterface.h"
#include "ui/gfx/geometry/rect.h"
#include "ui/gfx/geometry/skia_conversions.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* frame_callback_pending = static_cast<bool*>(data);
*frame_callback_pending = false;
}
} // namespace
////////////////////////////////////////////////////////////////////////////////
// FullscreenClient, public:
FullscreenClient::FullscreenClient() = default;
FullscreenClient::~FullscreenClient() = default;
bool FullscreenClient::Run(const InitParams& params) {
wl_callback_listener frame_listener = {FrameCallback};
// Wait for screen mode to be received
while (wl_display_dispatch(display_.get()) != -1) {
if (done_receiving_modes_ && !has_mode_) {
LOG(ERROR) << "Did not receive screen mode";
return false;
} else if (has_mode_) {
break;
}
}
AllocateBuffers(params);
do {
if (frame_callback_pending_)
continue;
if (frame_count_ == frames_)
break;
Paint(frame_listener);
} while (wl_display_dispatch(display_.get()) != -1);
return true;
}
////////////////////////////////////////////////////////////////////////////////
// FullscreenClient: Private
void FullscreenClient::AllocateBuffers(const InitParams& params) {
for (size_t i = 0; i < params.num_buffers; ++i) {
auto buffer =
CreateBuffer(size_, params.drm_format, params.bo_usage,
/*add_buffer_listener=*/!params.use_release_fences);
if (!buffer) {
LOG(ERROR) << "Failed to create buffer";
return;
}
buffers_.push_back(std::move(buffer));
}
}
void FullscreenClient::Paint(const wl_callback_listener& frame_listener) {
Buffer* buffer = DequeueBuffer();
if (!buffer)
return;
++frame_count_;
int left = point_.x();
int top = point_.y();
int right = point_.x() + square_size_.width();
int bottom = point_.y() + square_size_.height();
if (right >= size_.width() || left <= 0) {
dir_x_ *= -1;
}
if (top <= 0 || bottom >= size_.height()) {
dir_y_ *= -1;
}
point_.set_x(point_.x() + dir_x_ * step_size_);
point_.set_y(point_.y() + dir_y_ * step_size_);
SkCanvas* canvas = buffer->sk_surface->getCanvas();
canvas->clear(color_);
const SkRect rect = gfx::RectToSkRect(gfx::Rect{point_, square_size_});
const SkPaint paint;
canvas->drawRect(rect, paint);
if (gr_context_) {
gr_context_->flushAndSubmit();
glFinish();
}
wl_surface_set_buffer_scale(surface_.get(), scale_);
wl_surface_set_buffer_transform(surface_.get(), transform_);
wl_surface_damage(surface_.get(), 0, 0, surface_size_.width(),
surface_size_.height());
wl_surface_attach(surface_.get(), buffer->buffer.get(), 0, 0);
// Set up the frame callback.
frame_callback_pending_ = true;
frame_callback_.reset(wl_surface_frame(surface_.get()));
wl_callback_add_listener(frame_callback_.get(), &frame_listener,
&frame_callback_pending_);
wl_surface_commit(surface_.get());
wl_display_flush(display_.get());
}
void FullscreenClient::HandleDown(void* data,
struct wl_touch* wl_touch,
uint32_t serial,
uint32_t time,
struct wl_surface* surface,
int32_t id,
wl_fixed_t x,
wl_fixed_t y) {
if (color_ == SK_ColorBLUE) {
color_ = SK_ColorRED;
} else {
color_ = SK_ColorBLUE;
}
}
void FullscreenClient::HandleMode(void* data,
struct wl_output* wl_output,
uint32_t flags,
int32_t width,
int32_t height,
int32_t refresh) {
if ((WL_OUTPUT_MODE_CURRENT & flags) != WL_OUTPUT_MODE_CURRENT)
return;
size_.SetSize(width, height);
switch (transform_) {
case WL_OUTPUT_TRANSFORM_NORMAL:
case WL_OUTPUT_TRANSFORM_180:
surface_size_.SetSize(width, height);
break;
case WL_OUTPUT_TRANSFORM_90:
case WL_OUTPUT_TRANSFORM_270:
surface_size_.SetSize(height, width);
break;
default:
NOTREACHED();
}
std::unique_ptr<wl_region> opaque_region(static_cast<wl_region*>(
wl_compositor_create_region(globals_.compositor.get())));
if (!opaque_region) {
LOG(ERROR) << "Can't create region";
return;
}
wl_region_add(opaque_region.get(), 0, 0, surface_size_.width(),
surface_size_.height());
wl_surface_set_opaque_region(surface_.get(), opaque_region.get());
wl_surface_set_input_region(surface_.get(), opaque_region.get());
has_mode_ = true;
}
void FullscreenClient::HandleDone(void* data, struct wl_output* wl_output) {
done_receiving_modes_ = true;
}
} // namespace clients
} // namespace wayland
} // namespace exo
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