image/DynamicImage.cpp

   1 /* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
   2 /* This Source Code Form is subject to the terms of the Mozilla Public
   3  * License, v. 2.0. If a copy of the MPL was not distributed with this
   4  * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
   5
   6 #include "DynamicImage.h"
   7 #include "gfxPlatform.h"
   8 #include "gfxUtils.h"
   9 #include "mozilla/gfx/2D.h"
  10 #include "mozilla/gfx/Logging.h"
  11 #include "mozilla/RefPtr.h"
  12 #include "mozilla/SVGImageContext.h"
  13 #include "ImageRegion.h"
  14 #include "Orientation.h"
  15
  16 #include "mozilla/MemoryReporting.h"
  17
  18 using namespace mozilla;
  19 using namespace mozilla::gfx;
  20 using mozilla::layers::ImageContainer;
  21 using mozilla::layers::LayerManager;
  22
  23 namespace mozilla {
  24 namespace image {
  25
  26 // Inherited methods from Image.
  27
  28 already_AddRefed<ProgressTracker> DynamicImage::GetProgressTracker() {
  29   return nullptr;
  30 }
  31
  32 size_t DynamicImage::SizeOfSourceWithComputedFallback(
  33     SizeOfState& aState) const {
  34   return 0;
  35 }
  36
  37 void DynamicImage::CollectSizeOfSurfaces(
  38     nsTArray<SurfaceMemoryCounter>& aCounters,
  39     MallocSizeOf aMallocSizeOf) const {
  40   // We can't report anything useful because gfxDrawable doesn't expose this
  41   // information.
  42 }
  43
  44 void DynamicImage::IncrementAnimationConsumers() {}
  45
  46 void DynamicImage::DecrementAnimationConsumers() {}
  47
  48 #ifdef DEBUG
  49 uint32_t DynamicImage::GetAnimationConsumers() { return 0; }
  50 #endif
  51
  52 nsresult DynamicImage::OnImageDataAvailable(nsIRequest* aRequest,
  53                                             nsISupports* aContext,
  54                                             nsIInputStream* aInStr,
  55                                             uint64_t aSourceOffset,
  56                                             uint32_t aCount) {
  57   return NS_OK;
  58 }
  59
  60 nsresult DynamicImage::OnImageDataComplete(nsIRequest* aRequest,
  61                                            nsISupports* aContext,
  62                                            nsresult aStatus, bool aLastPart) {
  63   return NS_OK;
  64 }
  65
  66 void DynamicImage::OnSurfaceDiscarded(const SurfaceKey& aSurfaceKey) {}
  67
  68 void DynamicImage::SetInnerWindowID(uint64_t aInnerWindowId) {}
  69
  70 uint64_t DynamicImage::InnerWindowID() const { return 0; }
  71
  72 bool DynamicImage::HasError() { return !mDrawable; }
  73
  74 void DynamicImage::SetHasError() {}
  75
  76 nsIURI* DynamicImage::GetURI() const { return nullptr; }
  77
  78 // Methods inherited from XPCOM interfaces.
  79
  80 NS_IMPL_ISUPPORTS(DynamicImage, imgIContainer)
  81
  82 NS_IMETHODIMP
  83 DynamicImage::GetWidth(int32_t* aWidth) {
  84   *aWidth = mDrawable->Size().width;
  85   return NS_OK;
  86 }
  87
  88 NS_IMETHODIMP
  89 DynamicImage::GetHeight(int32_t* aHeight) {
  90   *aHeight = mDrawable->Size().height;
  91   return NS_OK;
  92 }
  93
  94 nsresult DynamicImage::GetNativeSizes(nsTArray<IntSize>& aNativeSizes) const {
  95   return NS_ERROR_NOT_IMPLEMENTED;
  96 }
  97
  98 size_t DynamicImage::GetNativeSizesLength() const { return 0; }
  99
 100 NS_IMETHODIMP
 101 DynamicImage::GetIntrinsicSize(nsSize* aSize) {
 102   IntSize intSize(mDrawable->Size());
 103   *aSize = nsSize(intSize.width, intSize.height);
 104   return NS_OK;
 105 }
 106
 107 Maybe<AspectRatio> DynamicImage::GetIntrinsicRatio() {
 108   auto size = mDrawable->Size();
 109   return Some(AspectRatio::FromSize(size.width, size.height));
 110 }
 111
 112 NS_IMETHODIMP_(Orientation)
 113 DynamicImage::GetOrientation() { return Orientation(); }
 114
 115 NS_IMETHODIMP_(bool)
 116 DynamicImage::HandledOrientation() { return false; }
 117
 118 NS_IMETHODIMP
 119 DynamicImage::GetType(uint16_t* aType) {
 120   *aType = imgIContainer::TYPE_RASTER;
 121   return NS_OK;
 122 }
 123
 124 NS_IMETHODIMP
 125 DynamicImage::GetProducerId(uint32_t* aId) {
 126   *aId = 0;
 127   return NS_OK;
 128 }
 129
 130 NS_IMETHODIMP
 131 DynamicImage::GetAnimated(bool* aAnimated) {
 132   *aAnimated = false;
 133   return NS_OK;
 134 }
 135
 136 NS_IMETHODIMP_(already_AddRefed<SourceSurface>)
 137 DynamicImage::GetFrame(uint32_t aWhichFrame, uint32_t aFlags) {
 138   IntSize size(mDrawable->Size());
 139   return GetFrameAtSize(IntSize(size.width, size.height), aWhichFrame, aFlags);
 140 }
 141
 142 NS_IMETHODIMP_(already_AddRefed<SourceSurface>)
 143 DynamicImage::GetFrameAtSize(const IntSize& aSize, uint32_t aWhichFrame,
 144                              uint32_t aFlags) {
 145   RefPtr<DrawTarget> dt =
 146       gfxPlatform::GetPlatform()->CreateOffscreenContentDrawTarget(
 147           aSize, SurfaceFormat::OS_RGBA);
 148   if (!dt || !dt->IsValid()) {
 149     gfxWarning()
 150         << "DynamicImage::GetFrame failed in CreateOffscreenContentDrawTarget";
 151     return nullptr;
 152   }
 153   RefPtr<gfxContext> context = gfxContext::CreateOrNull(dt);
 154   MOZ_ASSERT(context);  // already checked the draw target above
 155
 156   auto result = Draw(context, aSize, ImageRegion::Create(aSize), aWhichFrame,
 157                      SamplingFilter::POINT, Nothing(), aFlags, 1.0);
 158
 159   return result == ImgDrawResult::SUCCESS ? dt->Snapshot() : nullptr;
 160 }
 161
 162 NS_IMETHODIMP_(bool)
 163 DynamicImage::WillDrawOpaqueNow() { return false; }
 164
 165 NS_IMETHODIMP_(bool)
 166 DynamicImage::IsImageContainerAvailable(LayerManager* aManager,
 167                                         uint32_t aFlags) {
 168   return false;
 169 }
 170
 171 NS_IMETHODIMP_(already_AddRefed<ImageContainer>)
 172 DynamicImage::GetImageContainer(LayerManager* aManager, uint32_t aFlags) {
 173   return nullptr;
 174 }
 175
 176 NS_IMETHODIMP_(bool)
 177 DynamicImage::IsImageContainerAvailableAtSize(LayerManager* aManager,
 178                                               const IntSize& aSize,
 179                                               uint32_t aFlags) {
 180   return false;
 181 }
 182
 183 NS_IMETHODIMP_(ImgDrawResult)
 184 DynamicImage::GetImageContainerAtSize(layers::LayerManager* aManager,
 185                                       const gfx::IntSize& aSize,
 186                                       const Maybe<SVGImageContext>& aSVGContext,
 187                                       uint32_t aFlags,
 188                                       layers::ImageContainer** aContainer) {
 189   return ImgDrawResult::NOT_SUPPORTED;
 190 }
 191
 192 NS_IMETHODIMP_(ImgDrawResult)
 193 DynamicImage::Draw(gfxContext* aContext, const nsIntSize& aSize,
 194                    const ImageRegion& aRegion, uint32_t aWhichFrame,
 195                    SamplingFilter aSamplingFilter,
 196                    const Maybe<SVGImageContext>& aSVGContext, uint32_t aFlags,
 197                    float aOpacity) {
 198   MOZ_ASSERT(!aSize.IsEmpty(), "Unexpected empty size");
 199
 200   IntSize drawableSize(mDrawable->Size());
 201
 202   if (aSize == drawableSize) {
 203     gfxUtils::DrawPixelSnapped(aContext, mDrawable, SizeDouble(drawableSize),
 204                                aRegion, SurfaceFormat::OS_RGBA, aSamplingFilter,
 205                                aOpacity);
 206     return ImgDrawResult::SUCCESS;
 207   }
 208
 209   gfxSize scale(double(aSize.width) / drawableSize.width,
 210                 double(aSize.height) / drawableSize.height);
 211
 212   ImageRegion region(aRegion);
 213   region.Scale(1.0 / scale.width, 1.0 / scale.height);
 214
 215   gfxContextMatrixAutoSaveRestore saveMatrix(aContext);
 216   aContext->Multiply(gfxMatrix::Scaling(scale.width, scale.height));
 217
 218   gfxUtils::DrawPixelSnapped(aContext, mDrawable, SizeDouble(drawableSize),
 219                              region, SurfaceFormat::OS_RGBA, aSamplingFilter,
 220                              aOpacity);
 221   return ImgDrawResult::SUCCESS;
 222 }
 223
 224 NS_IMETHODIMP
 225 DynamicImage::StartDecoding(uint32_t aFlags, uint32_t aWhichFrame) {
 226   return NS_OK;
 227 }
 228
 229 bool DynamicImage::StartDecodingWithResult(uint32_t aFlags,
 230                                            uint32_t aWhichFrame) {
 231   return true;
 232 }
 233
 234 imgIContainer::DecodeResult DynamicImage::RequestDecodeWithResult(
 235     uint32_t aFlags, uint32_t aWhichFrame) {
 236   return imgIContainer::DECODE_SURFACE_AVAILABLE;
 237 }
 238
 239 NS_IMETHODIMP
 240 DynamicImage::RequestDecodeForSize(const nsIntSize& aSize, uint32_t aFlags,
 241                                    uint32_t aWhichFrame) {
 242   return NS_OK;
 243 }
 244
 245 NS_IMETHODIMP
 246 DynamicImage::LockImage() { return NS_OK; }
 247
 248 NS_IMETHODIMP
 249 DynamicImage::UnlockImage() { return NS_OK; }
 250
 251 NS_IMETHODIMP
 252 DynamicImage::RequestDiscard() { return NS_OK; }
 253
 254 NS_IMETHODIMP_(void)
 255 DynamicImage::RequestRefresh(const mozilla::TimeStamp& aTime) {}
 256
 257 NS_IMETHODIMP
 258 DynamicImage::GetAnimationMode(uint16_t* aAnimationMode) {
 259   *aAnimationMode = kNormalAnimMode;
 260   return NS_OK;
 261 }
 262
 263 NS_IMETHODIMP
 264 DynamicImage::SetAnimationMode(uint16_t aAnimationMode) { return NS_OK; }
 265
 266 NS_IMETHODIMP
 267 DynamicImage::ResetAnimation() { return NS_OK; }
 268
 269 NS_IMETHODIMP_(float)
 270 DynamicImage::GetFrameIndex(uint32_t aWhichFrame) { return 0; }
 271
 272 NS_IMETHODIMP_(int32_t)
 273 DynamicImage::GetFirstFrameDelay() { return 0; }
 274
 275 NS_IMETHODIMP_(void)
 276 DynamicImage::SetAnimationStartTime(const mozilla::TimeStamp& aTime) {}
 277
 278 nsIntSize DynamicImage::OptimalImageSizeForDest(const gfxSize& aDest,
 279                                                 uint32_t aWhichFrame,
 280                                                 SamplingFilter aSamplingFilter,
 281                                                 uint32_t aFlags) {
 282   IntSize size(mDrawable->Size());
 283   return nsIntSize(size.width, size.height);
 284 }
 285
 286 NS_IMETHODIMP_(nsIntRect)
 287 DynamicImage::GetImageSpaceInvalidationRect(const nsIntRect& aRect) {
 288   return aRect;
 289 }
 290
 291 already_AddRefed<imgIContainer> DynamicImage::Unwrap() {
 292   nsCOMPtr<imgIContainer> self(this);
 293   return self.forget();
 294 }
 295
 296 void DynamicImage::PropagateUseCounters(dom::Document*) {
 297   // No use counters.
 298 }
 299
 300 nsresult DynamicImage::GetHotspotX(int32_t* aX) {
 301   return Image::GetHotspotX(aX);
 302 }
 303
 304 nsresult DynamicImage::GetHotspotY(int32_t* aY) {
 305   return Image::GetHotspotY(aY);
 306 }
 307
 308 }  // namespace image
 309 }  // namespace mozilla