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authorDaniel Baumann <daniel.baumann@progress-linux.org>2024-04-19 00:47:55 +0000
committerDaniel Baumann <daniel.baumann@progress-linux.org>2024-04-19 00:47:55 +0000
commit26a029d407be480d791972afb5975cf62c9360a6 (patch)
treef435a8308119effd964b339f76abb83a57c29483 /image/OrientedImage.h
parentInitial commit. (diff)
downloadfirefox-upstream/124.0.1.tar.xz
firefox-upstream/124.0.1.zip
Adding upstream version 124.0.1.upstream/124.0.1
Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
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diff --git a/image/OrientedImage.h b/image/OrientedImage.h
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+/* -*- 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/. */
+
+#ifndef mozilla_image_OrientedImage_h
+#define mozilla_image_OrientedImage_h
+
+#include "ImageWrapper.h"
+#include "mozilla/gfx/2D.h"
+#include "mozilla/RefPtr.h"
+#include "Orientation.h"
+
+namespace mozilla {
+namespace image {
+
+/**
+ * An Image wrapper that rotates and/or flips an image according to a specified
+ * Orientation.
+ *
+ * XXX(seth): There a known (performance, not correctness) issue with
+ * GetImageContainer. See the comments for that method for more information.
+ */
+class OrientedImage : public ImageWrapper {
+ typedef gfx::SourceSurface SourceSurface;
+
+ public:
+ NS_INLINE_DECL_REFCOUNTING_INHERITED(OrientedImage, ImageWrapper)
+
+ NS_IMETHOD GetWidth(int32_t* aWidth) override;
+ NS_IMETHOD GetHeight(int32_t* aHeight) override;
+ nsresult GetNativeSizes(nsTArray<gfx::IntSize>& aNativeSizes) override;
+ NS_IMETHOD GetIntrinsicSize(nsSize* aSize) override;
+ Maybe<AspectRatio> GetIntrinsicRatio() override;
+ NS_IMETHOD_(already_AddRefed<SourceSurface>)
+ GetFrame(uint32_t aWhichFrame, uint32_t aFlags) override;
+ NS_IMETHOD_(already_AddRefed<SourceSurface>)
+ GetFrameAtSize(const gfx::IntSize& aSize, uint32_t aWhichFrame,
+ uint32_t aFlags) override;
+ NS_IMETHOD_(bool)
+ IsImageContainerAvailable(WindowRenderer* aRenderer,
+ uint32_t aFlags) override;
+ NS_IMETHOD_(ImgDrawResult)
+ GetImageProvider(WindowRenderer* aRenderer, const gfx::IntSize& aSize,
+ const SVGImageContext& aSVGContext,
+ const Maybe<ImageIntRegion>& aRegion, uint32_t aFlags,
+ WebRenderImageProvider** aProvider) override;
+ NS_IMETHOD_(ImgDrawResult)
+ Draw(gfxContext* aContext, const nsIntSize& aSize, const ImageRegion& aRegion,
+ uint32_t aWhichFrame, gfx::SamplingFilter aSamplingFilter,
+ const SVGImageContext& aSVGContext, uint32_t aFlags,
+ float aOpacity) override;
+ NS_IMETHOD_(nsIntRect)
+ GetImageSpaceInvalidationRect(const nsIntRect& aRect) override;
+ nsIntSize OptimalImageSizeForDest(const gfxSize& aDest, uint32_t aWhichFrame,
+ gfx::SamplingFilter aSamplingFilter,
+ uint32_t aFlags) override;
+
+ /**
+ * Computes a matrix that applies the rotation and reflection specified by
+ * aOrientation, or that matrix's inverse if aInvert is true.
+ *
+ * @param aSize The scaled size of the inner image. (When outside code
+ * specifies the scaled size, as with imgIContainer::Draw and its aSize
+ * parameter, it's necessary to swap the width and height if
+ * mOrientation.SwapsWidthAndHeight() is true.)
+ *
+ * @param aInvert If true, compute the inverse of the orientation matrix.
+ * Prefer this approach to OrientationMatrix(..).Invert(), because it's more
+ * numerically accurate.
+ */
+ static gfxMatrix OrientationMatrix(Orientation aOrientation,
+ const nsIntSize& aSize,
+ bool aInvert = false);
+
+ /**
+ * Returns a SourceSurface that is the result of rotating and flipping
+ * aSurface according to aOrientation.
+ */
+ static already_AddRefed<SourceSurface> OrientSurface(Orientation aOrientation,
+ SourceSurface* aSurface);
+
+ protected:
+ OrientedImage(Image* aImage, Orientation aOrientation)
+ : ImageWrapper(aImage), mOrientation(aOrientation) {}
+
+ virtual ~OrientedImage() {}
+
+ gfxMatrix OrientationMatrix(const nsIntSize& aSize, bool aInvert = false) {
+ return OrientationMatrix(mOrientation, aSize, aInvert);
+ }
+
+ private:
+ Orientation mOrientation;
+
+ friend class ImageOps;
+};
+
+} // namespace image
+} // namespace mozilla
+
+#endif // mozilla_image_OrientedImage_h