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85953615eb
Currently helps primarily on iOS when no BackdropFilter is present by lowering energy usage
73 lines
1.8 KiB
C++
73 lines
1.8 KiB
C++
// Copyright 2013 The Flutter Authors. All rights reserved.
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// Use of this source code is governed by a BSD-style license that can be
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// found in the LICENSE file.
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#include "surface.h"
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#include <fcntl.h>
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#include <lib/fdio/watcher.h>
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#include <unistd.h>
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#include "flutter/fml/unique_fd.h"
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namespace flutter_runner {
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Surface::Surface(std::string debug_label)
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: debug_label_(std::move(debug_label)) {}
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Surface::~Surface() = default;
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// |flutter::Surface|
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bool Surface::IsValid() {
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return valid_;
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}
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// |flutter::Surface|
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std::unique_ptr<flutter::SurfaceFrame> Surface::AcquireFrame(
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const SkISize& size) {
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return std::make_unique<flutter::SurfaceFrame>(
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nullptr, true,
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[](const flutter::SurfaceFrame& surface_frame, SkCanvas* canvas) {
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return true;
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});
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}
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// |flutter::Surface|
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GrContext* Surface::GetContext() {
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return nullptr;
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}
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static zx_status_t DriverWatcher(int dirfd,
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int event,
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const char* fn,
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void* cookie) {
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if (event == WATCH_EVENT_ADD_FILE && !strcmp(fn, "000")) {
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return ZX_ERR_STOP;
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}
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return ZX_OK;
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}
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bool Surface::CanConnectToDisplay() {
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constexpr char kGpuDriverClass[] = "/dev/class/gpu";
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fml::UniqueFD fd(open(kGpuDriverClass, O_DIRECTORY | O_RDONLY));
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if (fd.get() < 0) {
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FML_DLOG(ERROR) << "Failed to open " << kGpuDriverClass;
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return false;
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}
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zx_status_t status = fdio_watch_directory(
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fd.get(), DriverWatcher, zx_deadline_after(ZX_SEC(5)), nullptr);
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return status == ZX_ERR_STOP;
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}
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// |flutter::Surface|
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SkMatrix Surface::GetRootTransformation() const {
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// This backend does not support delegating to the underlying platform to
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// query for root surface transformations. Just return identity.
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SkMatrix matrix;
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matrix.reset();
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return matrix;
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}
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} // namespace flutter_runner
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