Adding upstream version 115.8.0esr.upstream/115.8.0esr

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>

1 files changed, 298 insertions, 0 deletions

diff --git a/dom/canvas/ImageBitmapRenderingContext.cpp b/dom/canvas/ImageBitmapRenderingContext.cpp
new file mode 100644
index 0000000000..c50e7790c5
--- /dev/null
+++ b/dom/canvas/ImageBitmapRenderingContext.cpp
@@ -0,0 +1,298 @@
+/* -*- Mode: C++; tab-width: 2; 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 "ImageBitmapRenderingContext.h"
+#include "gfxPlatform.h"
+#include "gfx2DGlue.h"
+#include "mozilla/dom/ImageBitmapRenderingContextBinding.h"
+#include "mozilla/gfx/Types.h"
+#include "nsComponentManagerUtils.h"
+#include "nsRegion.h"
+#include "ImageContainer.h"
+
+namespace mozilla::dom {
+
+ImageBitmapRenderingContext::ImageBitmapRenderingContext()
+    : mWidth(0),
+      mHeight(0),
+      mFrameCaptureState(FrameCaptureState::CLEAN,
+                         "ImageBitmapRenderingContext::mFrameCaptureState") {}
+
+ImageBitmapRenderingContext::~ImageBitmapRenderingContext() {
+  RemovePostRefreshObserver();
+}
+
+JSObject* ImageBitmapRenderingContext::WrapObject(
+    JSContext* aCx, JS::Handle<JSObject*> aGivenProto) {
+  return ImageBitmapRenderingContext_Binding::Wrap(aCx, this, aGivenProto);
+}
+
+already_AddRefed<layers::Image>
+ImageBitmapRenderingContext::ClipToIntrinsicSize() {
+  if (!mImage) {
+    return nullptr;
+  }
+
+  // If image is larger than canvas intrinsic size, clip it to the intrinsic
+  // size.
+  RefPtr<gfx::SourceSurface> surface;
+  RefPtr<layers::Image> result;
+  if (mWidth < mImage->GetSize().width || mHeight < mImage->GetSize().height) {
+    surface = MatchWithIntrinsicSize();
+  } else {
+    surface = mImage->GetAsSourceSurface();
+  }
+  if (!surface) {
+    return nullptr;
+  }
+  result =
+      new layers::SourceSurfaceImage(gfx::IntSize(mWidth, mHeight), surface);
+  return result.forget();
+}
+
+void ImageBitmapRenderingContext::GetCanvas(
+    Nullable<OwningHTMLCanvasElementOrOffscreenCanvas>& retval) const {
+  if (mCanvasElement && !mCanvasElement->IsInNativeAnonymousSubtree()) {
+    retval.SetValue().SetAsHTMLCanvasElement() = mCanvasElement;
+  } else if (mOffscreenCanvas) {
+    retval.SetValue().SetAsOffscreenCanvas() = mOffscreenCanvas;
+  } else {
+    retval.SetNull();
+  }
+}
+
+void ImageBitmapRenderingContext::TransferImageBitmap(ImageBitmap& aImageBitmap,
+                                                      ErrorResult& aRv) {
+  TransferFromImageBitmap(&aImageBitmap, aRv);
+}
+
+void ImageBitmapRenderingContext::TransferFromImageBitmap(
+    ImageBitmap* aImageBitmap, ErrorResult& aRv) {
+  ResetBitmap();
+
+  if (aImageBitmap) {
+    mImage = aImageBitmap->TransferAsImage();
+
+    if (!mImage) {
+      aRv.ThrowInvalidStateError("The input ImageBitmap has been detached");
+      return;
+    }
+
+    if (aImageBitmap->IsWriteOnly()) {
+      if (mCanvasElement) {
+        mCanvasElement->SetWriteOnly();
+      } else if (mOffscreenCanvas) {
+        mOffscreenCanvas->SetWriteOnly();
+      }
+    }
+  }
+
+  Redraw(gfxRect(0, 0, mWidth, mHeight));
+}
+
+NS_IMETHODIMP
+ImageBitmapRenderingContext::SetDimensions(int32_t aWidth, int32_t aHeight) {
+  mWidth = aWidth;
+  mHeight = aHeight;
+  return NS_OK;
+}
+
+NS_IMETHODIMP
+ImageBitmapRenderingContext::InitializeWithDrawTarget(
+    nsIDocShell* aDocShell, NotNull<gfx::DrawTarget*> aTarget) {
+  return NS_ERROR_NOT_IMPLEMENTED;
+}
+
+already_AddRefed<gfx::DataSourceSurface>
+ImageBitmapRenderingContext::MatchWithIntrinsicSize() {
+  RefPtr<gfx::SourceSurface> surface = mImage->GetAsSourceSurface();
+  if (!surface) {
+    return nullptr;
+  }
+  RefPtr<gfx::DataSourceSurface> temp = gfx::Factory::CreateDataSourceSurface(
+      gfx::IntSize(mWidth, mHeight), surface->GetFormat());
+  if (!temp) {
+    return nullptr;
+  }
+
+  gfx::DataSourceSurface::ScopedMap map(temp,
+                                        gfx::DataSourceSurface::READ_WRITE);
+  if (!map.IsMapped()) {
+    return nullptr;
+  }
+
+  RefPtr<gfx::DrawTarget> dt = gfx::Factory::CreateDrawTargetForData(
+      gfxPlatform::GetPlatform()->GetSoftwareBackend(), map.GetData(),
+      temp->GetSize(), map.GetStride(), temp->GetFormat());
+  if (!dt || !dt->IsValid()) {
+    gfxWarning()
+        << "ImageBitmapRenderingContext::MatchWithIntrinsicSize failed";
+    return nullptr;
+  }
+
+  dt->ClearRect(gfx::Rect(0, 0, mWidth, mHeight));
+  dt->CopySurface(
+      surface,
+      gfx::IntRect(0, 0, surface->GetSize().width, surface->GetSize().height),
+      gfx::IntPoint(0, 0));
+
+  return temp.forget();
+}
+
+mozilla::UniquePtr<uint8_t[]> ImageBitmapRenderingContext::GetImageBuffer(
+    int32_t* aFormat, gfx::IntSize* aImageSize) {
+  *aFormat = 0;
+  *aImageSize = {};
+
+  if (!mImage) {
+    return nullptr;
+  }
+
+  RefPtr<gfx::SourceSurface> surface = mImage->GetAsSourceSurface();
+  if (!surface) {
+    return nullptr;
+  }
+  RefPtr<gfx::DataSourceSurface> data = surface->GetDataSurface();
+  if (!data) {
+    return nullptr;
+  }
+
+  if (data->GetSize() != gfx::IntSize(mWidth, mHeight)) {
+    data = MatchWithIntrinsicSize();
+    if (!data) {
+      return nullptr;
+    }
+  }
+
+  *aFormat = imgIEncoder::INPUT_FORMAT_HOSTARGB;
+  *aImageSize = data->GetSize();
+
+  UniquePtr<uint8_t[]> ret = gfx::SurfaceToPackedBGRA(data);
+
+  if (ret && ShouldResistFingerprinting(RFPTarget::CanvasRandomization)) {
+    nsRFPService::RandomizePixels(
+        GetCookieJarSettings(), ret.get(),
+        data->GetSize().width * data->GetSize().height * 4,
+        gfx::SurfaceFormat::A8R8G8B8_UINT32);
+  }
+  return ret;
+}
+
+NS_IMETHODIMP
+ImageBitmapRenderingContext::GetInputStream(const char* aMimeType,
+                                            const nsAString& aEncoderOptions,
+                                            nsIInputStream** aStream) {
+  nsCString enccid("@mozilla.org/image/encoder;2?type=");
+  enccid += aMimeType;
+  nsCOMPtr<imgIEncoder> encoder = do_CreateInstance(enccid.get());
+  if (!encoder) {
+    return NS_ERROR_FAILURE;
+  }
+
+  int32_t format = 0;
+  gfx::IntSize imageSize = {};
+  UniquePtr<uint8_t[]> imageBuffer = GetImageBuffer(&format, &imageSize);
+  if (!imageBuffer) {
+    return NS_ERROR_FAILURE;
+  }
+
+  return ImageEncoder::GetInputStream(imageSize.width, imageSize.height,
+                                      imageBuffer.get(), format, encoder,
+                                      aEncoderOptions, aStream);
+}
+
+already_AddRefed<mozilla::gfx::SourceSurface>
+ImageBitmapRenderingContext::GetSurfaceSnapshot(
+    gfxAlphaType* const aOutAlphaType) {
+  if (!mImage) {
+    return nullptr;
+  }
+
+  if (aOutAlphaType) {
+    *aOutAlphaType =
+        (GetIsOpaque() ? gfxAlphaType::Opaque : gfxAlphaType::Premult);
+  }
+
+  RefPtr<gfx::SourceSurface> surface = mImage->GetAsSourceSurface();
+  if (!surface) {
+    return nullptr;
+  }
+
+  if (surface->GetSize() != gfx::IntSize(mWidth, mHeight)) {
+    return MatchWithIntrinsicSize();
+  }
+
+  return surface.forget();
+}
+
+void ImageBitmapRenderingContext::SetOpaqueValueFromOpaqueAttr(
+    bool aOpaqueAttrValue) {
+  // ignored
+}
+
+bool ImageBitmapRenderingContext::GetIsOpaque() { return false; }
+
+void ImageBitmapRenderingContext::ResetBitmap() {
+  if (mCanvasElement) {
+    mCanvasElement->InvalidateCanvas();
+  }
+
+  mImage = nullptr;
+  mFrameCaptureState = FrameCaptureState::CLEAN;
+}
+
+bool ImageBitmapRenderingContext::UpdateWebRenderCanvasData(
+    nsDisplayListBuilder* aBuilder, WebRenderCanvasData* aCanvasData) {
+  if (!mImage) {
+    // No DidTransactionCallback will be received, so mark the context clean
+    // now so future invalidations will be dispatched.
+    MarkContextClean();
+    return false;
+  }
+
+  RefPtr<layers::ImageContainer> imageContainer =
+      aCanvasData->GetImageContainer();
+  AutoTArray<layers::ImageContainer::NonOwningImage, 1> imageList;
+  RefPtr<layers::Image> image = ClipToIntrinsicSize();
+  if (!image) {
+    return false;
+  }
+
+  imageList.AppendElement(layers::ImageContainer::NonOwningImage(image));
+  imageContainer->SetCurrentImages(imageList);
+  return true;
+}
+
+void ImageBitmapRenderingContext::MarkContextClean() {}
+
+NS_IMETHODIMP
+ImageBitmapRenderingContext::Redraw(const gfxRect& aDirty) {
+  mFrameCaptureState = FrameCaptureState::DIRTY;
+
+  if (mOffscreenCanvas) {
+    mOffscreenCanvas->CommitFrameToCompositor();
+  } else if (mCanvasElement) {
+    mozilla::gfx::Rect rect = ToRect(aDirty);
+    mCanvasElement->InvalidateCanvasContent(&rect);
+  }
+
+  return NS_OK;
+}
+
+void ImageBitmapRenderingContext::DidRefresh() {}
+
+NS_IMPL_CYCLE_COLLECTING_ADDREF(ImageBitmapRenderingContext)
+NS_IMPL_CYCLE_COLLECTING_RELEASE(ImageBitmapRenderingContext)
+
+NS_IMPL_CYCLE_COLLECTION_WRAPPERCACHE_WEAK_PTR(ImageBitmapRenderingContext,
+                                               mCanvasElement, mOffscreenCanvas)
+
+NS_INTERFACE_MAP_BEGIN_CYCLE_COLLECTION(ImageBitmapRenderingContext)
+  NS_WRAPPERCACHE_INTERFACE_MAP_ENTRY
+  NS_INTERFACE_MAP_ENTRY(nsICanvasRenderingContextInternal)
+  NS_INTERFACE_MAP_ENTRY(nsISupports)
+NS_INTERFACE_MAP_END
+
+}  // namespace mozilla::dom