DXR is a code search and navigation tool aimed at making sense of large projects. It supports full-text and regex searches as well as structural queries.

Header

Mercurial (5b81998bb7ab)

VCS Links

Line Code
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 155 156 157 158 159
/* -*- Mode: C++; tab-width: 20; indent-tabs-mode: nil; c-basic-offset: 2 -*-
 * This Source Code Form is subject to the terms of the Mozilla Public
 * License, v. 2.0. If a copy of the MPL was not distributed with this
 * file, You can obtain one at http://mozilla.org/MPL/2.0/. */

#include "gfxSharedImageSurface.h"

#include "ipc/AutoOpenSurface.h"
#include "ImageLayerComposite.h"
#include "ImageHost.h"
#include "gfxImageSurface.h"
#include "gfx2DGlue.h"
#include "gfxUtils.h"

#include "mozilla/layers/Compositor.h"
#include "mozilla/layers/CompositorTypes.h" // for TextureInfo
#include "mozilla/layers/Effects.h"
#include "CompositableHost.h"

using namespace mozilla::gfx;

namespace mozilla {
namespace layers {

ImageLayerComposite::ImageLayerComposite(LayerManagerComposite* aManager)
  : ImageLayer(aManager, nullptr)
  , LayerComposite(aManager)
  , mImageHost(nullptr)
{
  MOZ_COUNT_CTOR(ImageLayerComposite);
  mImplData = static_cast<LayerComposite*>(this);
}

ImageLayerComposite::~ImageLayerComposite()
{
  MOZ_COUNT_DTOR(ImageLayerComposite);
  MOZ_ASSERT(mDestroyed);

  CleanupResources();
}

void
ImageLayerComposite::SetCompositableHost(CompositableHost* aHost)
{
  mImageHost = static_cast<ImageHost*>(aHost);
}

void
ImageLayerComposite::Disconnect()
{
  Destroy();
}

LayerRenderState
ImageLayerComposite::GetRenderState()
{
  if (mImageHost) {
    return mImageHost->GetRenderState();
  }
  return LayerRenderState();
}

Layer*
ImageLayerComposite::GetLayer()
{
  return this;
}

void
ImageLayerComposite::RenderLayer(const nsIntPoint& aOffset,
                                 const nsIntRect& aClipRect)
{
  if (!mImageHost) {
    return;
  }

#ifdef MOZ_DUMP_PAINTING
  if (gfxUtils::sDumpPainting) {
    nsRefPtr<gfxImageSurface> surf = mImageHost->GetAsSurface();
    WriteSnapshotToDumpFile(this, surf);
  }
#endif

  mCompositor->MakeCurrent();

  EffectChain effectChain;
  LayerManagerComposite::AddMaskEffect(mMaskLayer, effectChain);

  gfx::Matrix4x4 transform;
  ToMatrix4x4(GetEffectiveTransform(), transform);
  gfx::Rect clipRect(aClipRect.x, aClipRect.y, aClipRect.width, aClipRect.height);
  mImageHost->SetCompositor(mCompositor);
  mImageHost->Composite(effectChain,
                        GetEffectiveOpacity(),
                        transform,
                        gfx::Point(aOffset.x, aOffset.y),
                        gfx::ToFilter(mFilter),
                        clipRect);
}

void 
ImageLayerComposite::ComputeEffectiveTransforms(const gfx3DMatrix& aTransformToSurface)
{
  gfx3DMatrix local = GetLocalTransform();

  // Snap image edges to pixel boundaries
  gfxRect sourceRect(0, 0, 0, 0);
  if (mImageHost && mImageHost->GetTextureHost()) {
    IntSize size = mImageHost->GetTextureHost()->GetSize();
    sourceRect.SizeTo(size.width, size.height);
    if (mScaleMode != SCALE_NONE &&
        sourceRect.width != 0.0 && sourceRect.height != 0.0) {
      NS_ASSERTION(mScaleMode == SCALE_STRETCH,
                   "No other scalemodes than stretch and none supported yet.");
      local.Scale(mScaleToSize.width / sourceRect.width,
                  mScaleToSize.height / sourceRect.height, 1.0);
    }
  }
  // Snap our local transform first, and snap the inherited transform as well.
  // This makes our snapping equivalent to what would happen if our content
  // was drawn into a ThebesLayer (gfxContext would snap using the local
  // transform, then we'd snap again when compositing the ThebesLayer).
  mEffectiveTransform =
      SnapTransform(local, sourceRect, nullptr) *
      SnapTransformTranslation(aTransformToSurface, nullptr);
  ComputeEffectiveTransformForMaskLayer(aTransformToSurface);
}

CompositableHost*
ImageLayerComposite::GetCompositableHost() {
  return mImageHost.get();
}

void
ImageLayerComposite::CleanupResources()
{
  if (mImageHost) {
    mImageHost->Detach();
  }
  mImageHost = nullptr;
}

#ifdef MOZ_LAYERS_HAVE_LOG
nsACString&
ImageLayerComposite::PrintInfo(nsACString& aTo, const char* aPrefix)
{
  ImageLayer::PrintInfo(aTo, aPrefix);
  aTo += "\n";
  if (mImageHost) {
    nsAutoCString pfx(aPrefix);
    pfx += "  ";
    mImageHost->PrintInfo(aTo, pfx.get());
  }
  return aTo;
}
#endif

} /* layers */
} /* mozilla */