Move synchronous compositor into content/browser

content/renderer/android/synchronous_compositor_output_surface.cc

-// Copyright (c) 2013 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 "content/renderer/android/synchronous_compositor_output_surface.h"
-
-#include "base/command_line.h"
-#include "base/logging.h"
-#include "base/time.h"
-#include "cc/output/compositor_frame.h"
-#include "cc/output/compositor_frame_ack.h"
-#include "cc/output/output_surface_client.h"
-#include "cc/output/software_output_device.h"
-#include "content/common/gpu/client/webgraphicscontext3d_command_buffer_impl.h"
-#include "content/public/common/content_switches.h"
-#include "content/public/renderer/android/synchronous_compositor_client.h"
-#include "content/public/renderer/content_renderer_client.h"
-#include "skia/ext/refptr.h"
-#include "third_party/skia/include/core/SkCanvas.h"
-#include "third_party/skia/include/core/SkDevice.h"
-#include "third_party/skia/include/core/SkPicture.h"
-#include "ui/gfx/rect_conversions.h"
-#include "ui/gfx/skia_util.h"
-#include "ui/gfx/transform.h"
-#include "webkit/common/gpu/webgraphicscontext3d_in_process_command_buffer_impl.h"
-
-using webkit::gpu::WebGraphicsContext3DInProcessCommandBufferImpl;
-
-namespace content {
-
-namespace {
-
-// TODO(boliu): RenderThreadImpl should create in process contexts as well.
-scoped_ptr<WebKit::WebGraphicsContext3D> CreateWebGraphicsContext3D() {
-  if (!CommandLine::ForCurrentProcess()->HasSwitch("testing-webview-gl-mode"))
-    return scoped_ptr<WebKit::WebGraphicsContext3D>();
-
-  WebKit::WebGraphicsContext3D::Attributes attributes;
-  attributes.antialias = false;
-  attributes.shareResources = true;
-  attributes.noAutomaticFlushes = true;
-
-  return scoped_ptr<WebKit::WebGraphicsContext3D>(
-      WebGraphicsContext3DInProcessCommandBufferImpl
-          ::CreateViewContext(attributes, NULL));
-}
-
-} // namespace
-
-class SynchronousCompositorOutputSurface::SoftwareDevice
-  : public cc::SoftwareOutputDevice {
- public:
-  SoftwareDevice(SynchronousCompositorOutputSurface* surface)
-    : surface_(surface),
-      null_device_(SkBitmap::kARGB_8888_Config, 1, 1),
-      null_canvas_(&null_device_) {
-  }
-  virtual void Resize(gfx::Size size) OVERRIDE {
-    // Intentional no-op: canvas size is controlled by the embedder.
-  }
-  virtual SkCanvas* BeginPaint(gfx::Rect damage_rect) OVERRIDE {
-    DCHECK(surface_->current_sw_canvas_);
-    if (surface_->current_sw_canvas_)
-      return surface_->current_sw_canvas_;
-    return &null_canvas_;
-  }
-  virtual void EndPaint(cc::SoftwareFrameData* frame_data) OVERRIDE {
-    surface_->current_sw_canvas_ = NULL;
-  }
-  virtual void CopyToBitmap(gfx::Rect rect, SkBitmap* output) OVERRIDE {
-    NOTIMPLEMENTED();
-  }
-  virtual void Scroll(gfx::Vector2d delta,
-                      gfx::Rect clip_rect) OVERRIDE {
-    NOTIMPLEMENTED();
-  }
-  virtual void ReclaimDIB(const TransportDIB::Id& id) OVERRIDE {
-    NOTIMPLEMENTED();
-  }
-
- private:
-  SynchronousCompositorOutputSurface* surface_;
-  SkDevice null_device_;
-  SkCanvas null_canvas_;
-
-  DISALLOW_COPY_AND_ASSIGN(SoftwareDevice);
-};
-
-SynchronousCompositorOutputSurface::SynchronousCompositorOutputSurface(
-    SynchronousCompositorOutputSurfaceDelegate* delegate)
-    : cc::OutputSurface(
-          CreateWebGraphicsContext3D(),
-          scoped_ptr<cc::SoftwareOutputDevice>(new SoftwareDevice(this))),
-      delegate_(delegate),
-      needs_begin_frame_(false),
-      did_swap_buffer_(false),
-      current_sw_canvas_(NULL) {
-  capabilities_.deferred_gl_initialization = true;
-}
-
-SynchronousCompositorOutputSurface::~SynchronousCompositorOutputSurface() {
-  DCHECK(CalledOnValidThread());
-  delegate_->DidDestroySynchronousOutputSurface();
-}
-
-bool SynchronousCompositorOutputSurface::ForcedDrawToSoftwareDevice() const {
-  return current_sw_canvas_ != NULL;
-}
-
-bool SynchronousCompositorOutputSurface::BindToClient(
-    cc::OutputSurfaceClient* surface_client) {
-  DCHECK(CalledOnValidThread());
-  if (!cc::OutputSurface::BindToClient(surface_client))
-    return false;
-  delegate_->DidCreateSynchronousOutputSurface();
-  return true;
-}
-
-void SynchronousCompositorOutputSurface::Reshape(
-    gfx::Size size, float scale_factor) {
-  // Intentional no-op: surface size is controlled by the embedder.
-}
-
-void SynchronousCompositorOutputSurface::SendFrameToParentCompositor(
-    cc::CompositorFrame* frame) {
-  NOTREACHED();
-  // TODO(joth): Route page scale to the client, see http://crbug.com/237006
-}
-
-void SynchronousCompositorOutputSurface::SetNeedsBeginFrame(
-    bool enable) {
-  DCHECK(CalledOnValidThread());
-  needs_begin_frame_ = enable;
-  delegate_->SetContinuousInvalidate(needs_begin_frame_);
-}
-
-void SynchronousCompositorOutputSurface::SwapBuffers(
-    const ui::LatencyInfo& info) {
-  context3d()->shallowFlushCHROMIUM();
-  did_swap_buffer_ = true;
-}
-
-bool SynchronousCompositorOutputSurface::IsHwReady() {
-  return context3d() != NULL;
-}
-
-bool SynchronousCompositorOutputSurface::DemandDrawSw(SkCanvas* canvas) {
-  DCHECK(CalledOnValidThread());
-  DCHECK(canvas);
-  DCHECK(!current_sw_canvas_);
-  current_sw_canvas_ = canvas;
-
-  SkRect canvas_clip;
-  gfx::Rect damage_area;
-  if (canvas->getClipBounds(&canvas_clip)) {
-    damage_area = gfx::ToEnclosedRect(gfx::SkRectToRectF(canvas_clip));
-  } else {
-    damage_area = gfx::Rect(kint16max, kint16max);
-  }
-
-  gfx::Transform transform;
-  transform.matrix() = canvas->getTotalMatrix();  // Converts 3x3 matrix to 4x4.
-
-  InvokeComposite(transform, damage_area);
-
-  bool finished_draw = current_sw_canvas_ == NULL;
-  current_sw_canvas_ = NULL;
-  return finished_draw;
-}
-
-bool SynchronousCompositorOutputSurface::DemandDrawHw(
-      gfx::Size view_size,
-      const gfx::Transform& transform,
-      gfx::Rect damage_area) {
-  DCHECK(CalledOnValidThread());
-  DCHECK(client_);
-
-  did_swap_buffer_ = false;
-
-  InvokeComposite(transform, damage_area);
-
-  return did_swap_buffer_;
-}
-
-void SynchronousCompositorOutputSurface::InvokeComposite(
-    const gfx::Transform& transform,
-    gfx::Rect damage_area) {
-  // TODO(boliu): This assumes |transform| is identity and |damage_area| is the
-  // whole view. Tracking bug to implement this: crbug.com/230463.
-  client_->SetNeedsRedrawRect(damage_area);
-  if (needs_begin_frame_)
-    client_->BeginFrame(base::TimeTicks::Now());
-}
-
-// Not using base::NonThreadSafe as we want to enforce a more exacting threading
-// requirement: SynchronousCompositorOutputSurface() must only be used by
-// embedders that supply their own compositor loop via
-// OverrideCompositorMessageLoop().
-bool SynchronousCompositorOutputSurface::CalledOnValidThread() const {
-  return base::MessageLoop::current() && (base::MessageLoop::current() ==
-      GetContentClient()->renderer()->OverrideCompositorMessageLoop());
-}
-
-}  // namespace content