shell/common/surface.cc

// Copyright 2016 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 "flutter/shell/common/surface.h"

#include "lib/fxl/logging.h"
#include "third_party/skia/include/core/SkColorSpaceXformCanvas.h"
#include "third_party/skia/include/core/SkSurface.h"

namespace shell {

SurfaceFrame::SurfaceFrame(sk_sp<SkSurface> surface,
                           SubmitCallback submit_callback)
    : submitted_(false), surface_(surface), submit_callback_(submit_callback) {
  FXL_DCHECK(submit_callback_);
  if (surface_) {
    xform_canvas_ = SkCreateColorSpaceXformCanvas(surface_->getCanvas(),
                                                  SkColorSpace::MakeSRGB());
  }
}

SurfaceFrame::~SurfaceFrame() {
  if (submit_callback_) {
    // Dropping without a Submit.
    submit_callback_(*this, nullptr);
  }
}

bool SurfaceFrame::Submit() {
  if (submitted_) {
    return false;
  }

  submitted_ = PerformSubmit();

  return submitted_;
}

SkCanvas* SurfaceFrame::SkiaCanvas() {
  if (xform_canvas_) {
    return xform_canvas_.get();
  }
  return surface_ != nullptr ? surface_->getCanvas() : nullptr;
}

sk_sp<SkSurface> SurfaceFrame::SkiaSurface() const {
  return surface_;
}

bool SurfaceFrame::PerformSubmit() {
  if (submit_callback_ == nullptr) {
    return false;
  }

  if (submit_callback_(*this, SkiaCanvas())) {
    return true;
  }

  return false;
}

Surface::Surface() : Surface(std::make_unique<flow::CompositorContext>()) {}

Surface::Surface(std::unique_ptr<flow::CompositorContext> compositor_context)
    : compositor_context_(std::move(compositor_context)) {
  FXL_DCHECK(compositor_context_);
  // TODO: Get rid of these explicit calls and move the logic to the c/dtors of
  // the compositor context.
  compositor_context_->OnGrContextCreated();
}

Surface::~Surface() {
  compositor_context_->OnGrContextDestroyed();
}

flow::CompositorContext& Surface::GetCompositorContext() {
  return *compositor_context_;
}

}  // namespace shell