diff options
32 files changed, 314 insertions, 229 deletions
diff --git a/image/ClippedImage.cpp b/image/ClippedImage.cpp index 539471851..6372f5950 100644 --- a/image/ClippedImage.cpp +++ b/image/ClippedImage.cpp @@ -242,13 +242,13 @@ ClippedImage::GetIntrinsicSize(nsSize* aSize) } NS_IMETHODIMP -ClippedImage::GetIntrinsicRatio(nsSize* aRatio) +ClippedImage::GetIntrinsicRatio(AspectRatio* aRatio) { if (!ShouldClip()) { return InnerImage()->GetIntrinsicRatio(aRatio); } - *aRatio = nsSize(mClip.width, mClip.height); + *aRatio = AspectRatio::FromSize(mClip.width, mClip.height); return NS_OK; } diff --git a/image/ClippedImage.h b/image/ClippedImage.h index 140cc1909..65963b756 100644 --- a/image/ClippedImage.h +++ b/image/ClippedImage.h @@ -35,7 +35,7 @@ public: NS_IMETHOD GetWidth(int32_t* aWidth) override; NS_IMETHOD GetHeight(int32_t* aHeight) override; NS_IMETHOD GetIntrinsicSize(nsSize* aSize) override; - NS_IMETHOD GetIntrinsicRatio(nsSize* aRatio) override; + NS_IMETHOD GetIntrinsicRatio(AspectRatio* aRatio) override; NS_IMETHOD_(already_AddRefed<SourceSurface>) GetFrame(uint32_t aWhichFrame, uint32_t aFlags) override; NS_IMETHOD_(already_AddRefed<SourceSurface>) diff --git a/image/DynamicImage.cpp b/image/DynamicImage.cpp index 670595aec..aeb1fcf78 100644 --- a/image/DynamicImage.cpp +++ b/image/DynamicImage.cpp @@ -136,10 +136,10 @@ DynamicImage::GetIntrinsicSize(nsSize* aSize) } NS_IMETHODIMP -DynamicImage::GetIntrinsicRatio(nsSize* aSize) +DynamicImage::GetIntrinsicRatio(AspectRatio* aRatio) { - IntSize intSize(mDrawable->Size()); - *aSize = nsSize(intSize.width, intSize.height); + auto size = mDrawable->Size(); + *aRatio = AspectRatio::FromSize(size); return NS_OK; } diff --git a/image/ImageWrapper.cpp b/image/ImageWrapper.cpp index f7068dfc5..5ed6c7817 100644 --- a/image/ImageWrapper.cpp +++ b/image/ImageWrapper.cpp @@ -146,9 +146,9 @@ ImageWrapper::GetIntrinsicSize(nsSize* aSize) } NS_IMETHODIMP -ImageWrapper::GetIntrinsicRatio(nsSize* aSize) +ImageWrapper::GetIntrinsicRatio(AspectRatio* aRatio) { - return mInnerImage->GetIntrinsicRatio(aSize); + return mInnerImage->GetIntrinsicRatio(aRatio); } NS_IMETHODIMP_(Orientation) diff --git a/image/OrientedImage.cpp b/image/OrientedImage.cpp index 9489ceafd..0b6560df1 100644 --- a/image/OrientedImage.cpp +++ b/image/OrientedImage.cpp @@ -59,12 +59,12 @@ OrientedImage::GetIntrinsicSize(nsSize* aSize) } NS_IMETHODIMP -OrientedImage::GetIntrinsicRatio(nsSize* aRatio) +OrientedImage::GetIntrinsicRatio(AspectRatio* aRatio) { nsresult rv = InnerImage()->GetIntrinsicRatio(aRatio); if (mOrientation.SwapsWidthAndHeight()) { - swap(aRatio->width, aRatio->height); + *aRatio = aRatio->Inverted(); } return rv; diff --git a/image/OrientedImage.h b/image/OrientedImage.h index 604ab3d4f..b77571f4a 100644 --- a/image/OrientedImage.h +++ b/image/OrientedImage.h @@ -31,7 +31,7 @@ public: NS_IMETHOD GetWidth(int32_t* aWidth) override; NS_IMETHOD GetHeight(int32_t* aHeight) override; NS_IMETHOD GetIntrinsicSize(nsSize* aSize) override; - NS_IMETHOD GetIntrinsicRatio(nsSize* aRatio) override; + NS_IMETHOD GetIntrinsicRatio(AspectRatio* aRatio) override; NS_IMETHOD_(already_AddRefed<SourceSurface>) GetFrame(uint32_t aWhichFrame, uint32_t aFlags) override; NS_IMETHOD_(already_AddRefed<SourceSurface>) diff --git a/image/RasterImage.cpp b/image/RasterImage.cpp index b67ec3bef..5725aee3a 100644 --- a/image/RasterImage.cpp +++ b/image/RasterImage.cpp @@ -240,13 +240,14 @@ RasterImage::GetIntrinsicSize(nsSize* aSize) //****************************************************************************** NS_IMETHODIMP -RasterImage::GetIntrinsicRatio(nsSize* aRatio) +RasterImage::GetIntrinsicRatio(AspectRatio* aRatio) { if (mError) { return NS_ERROR_FAILURE; } - *aRatio = nsSize(mSize.width, mSize.height); + *aRatio = AspectRatio::FromSize(mSize); + return NS_OK; } diff --git a/image/VectorImage.cpp b/image/VectorImage.cpp index 3028c1c2e..3fcb296f5 100644 --- a/image/VectorImage.cpp +++ b/image/VectorImage.cpp @@ -628,7 +628,7 @@ VectorImage::GetIntrinsicSize(nsSize* aSize) //****************************************************************************** NS_IMETHODIMP -VectorImage::GetIntrinsicRatio(nsSize* aRatio) +VectorImage::GetIntrinsicRatio(AspectRatio* aRatio) { if (mError || !mIsFullyLoaded) { return NS_ERROR_FAILURE; diff --git a/image/imgIContainer.idl b/image/imgIContainer.idl index 20c949037..ba1c494af 100644 --- a/image/imgIContainer.idl +++ b/image/imgIContainer.idl @@ -12,6 +12,7 @@ #include "gfxMatrix.h" #include "gfxRect.h" #include "mozilla/gfx/2D.h" +#include "mozilla/AspectRatio.h" #include "mozilla/Maybe.h" #include "mozilla/RefPtr.h" #include "nsRect.h" @@ -55,6 +56,7 @@ native SamplingFilter(mozilla::gfx::SamplingFilter); native nsIntRectByVal(nsIntRect); [ref] native nsIntSize(nsIntSize); native nsSize(nsSize); +native AspectRatio(mozilla::AspectRatio); [ptr] native nsIFrame(nsIFrame); native TempRefImageContainer(already_AddRefed<mozilla::layers::ImageContainer>); [ref] native ImageRegion(mozilla::image::ImageRegion); @@ -101,7 +103,7 @@ interface imgIContainer : nsISupports * The (dimensionless) intrinsic ratio of this image. In the case of any * error, an exception will be thrown. */ - [noscript] readonly attribute nsSize intrinsicRatio; + [noscript] readonly attribute AspectRatio intrinsicRatio; /** * Given a size at which this image will be displayed, and the drawing diff --git a/layout/base/nsCSSRendering.cpp b/layout/base/nsCSSRendering.cpp index 9a827546f..e6e3b5f6f 100644 --- a/layout/base/nsCSSRendering.cpp +++ b/layout/base/nsCSSRendering.cpp @@ -3546,10 +3546,10 @@ ComputeDrawnSizeForBackground(const CSSSizeOrRatio& aIntrinsicSize, imageSize.width = ComputeRoundedSize(imageSize.width, aBgPositioningArea.width); if (!isRepeatRoundInBothDimensions && aLayerSize.mHeightType == nsStyleImageLayers::Size::DimensionType::eAuto) { - // Restore intrinsic rato - if (aIntrinsicSize.mRatio.width) { - float scale = float(aIntrinsicSize.mRatio.height) / aIntrinsicSize.mRatio.width; - imageSize.height = NSCoordSaturatingNonnegativeMultiply(imageSize.width, scale); + // Restore intrinsic ratio + if (aIntrinsicSize.mRatio) { + imageSize.height = + aIntrinsicSize.mRatio.Inverted().ApplyTo(imageSize.width); } } } @@ -3560,10 +3560,9 @@ ComputeDrawnSizeForBackground(const CSSSizeOrRatio& aIntrinsicSize, imageSize.height = ComputeRoundedSize(imageSize.height, aBgPositioningArea.height); if (!isRepeatRoundInBothDimensions && aLayerSize.mWidthType == nsStyleImageLayers::Size::DimensionType::eAuto) { - // Restore intrinsic rato - if (aIntrinsicSize.mRatio.height) { - float scale = float(aIntrinsicSize.mRatio.width) / aIntrinsicSize.mRatio.height; - imageSize.width = NSCoordSaturatingNonnegativeMultiply(imageSize.height, scale); + // Restore intrinsic ratio + if (aIntrinsicSize.mRatio) { + imageSize.width = aIntrinsicSize.mRatio.ApplyTo(imageSize.height); } } } @@ -5264,17 +5263,11 @@ CSSSizeOrRatio::ComputeConcreteSize() const return nsSize(mWidth, mHeight); } if (mHasWidth) { - nscoord height = NSCoordSaturatingNonnegativeMultiply( - mWidth, - double(mRatio.height) / mRatio.width); - return nsSize(mWidth, height); + return nsSize(mWidth, mRatio.Inverted().ApplyTo(mWidth)); } MOZ_ASSERT(mHasHeight); - nscoord width = NSCoordSaturatingNonnegativeMultiply( - mHeight, - double(mRatio.width) / mRatio.height); - return nsSize(width, mHeight); + return nsSize(mRatio.ApplyTo(mHeight), mHeight); } CSSSizeOrRatio @@ -5379,9 +5372,7 @@ nsImageRenderer::ComputeConcreteSize(const CSSSizeOrRatio& aSpecifiedSize, if (aSpecifiedSize.mHasWidth) { nscoord height; if (aIntrinsicSize.HasRatio()) { - height = NSCoordSaturatingNonnegativeMultiply( - aSpecifiedSize.mWidth, - double(aIntrinsicSize.mRatio.height) / aIntrinsicSize.mRatio.width); + height = aIntrinsicSize.mRatio.Inverted().ApplyTo(aSpecifiedSize.mWidth); } else if (aIntrinsicSize.mHasHeight) { height = aIntrinsicSize.mHeight; } else { @@ -5393,9 +5384,7 @@ nsImageRenderer::ComputeConcreteSize(const CSSSizeOrRatio& aSpecifiedSize, MOZ_ASSERT(aSpecifiedSize.mHasHeight); nscoord width; if (aIntrinsicSize.HasRatio()) { - width = NSCoordSaturatingNonnegativeMultiply( - aSpecifiedSize.mHeight, - double(aIntrinsicSize.mRatio.width) / aIntrinsicSize.mRatio.height); + width = aIntrinsicSize.mRatio.ApplyTo(aSpecifiedSize.mHeight); } else if (aIntrinsicSize.mHasWidth) { width = aIntrinsicSize.mWidth; } else { @@ -5406,32 +5395,57 @@ nsImageRenderer::ComputeConcreteSize(const CSSSizeOrRatio& aSpecifiedSize, /* static */ nsSize nsImageRenderer::ComputeConstrainedSize(const nsSize& aConstrainingSize, - const nsSize& aIntrinsicRatio, + const AspectRatio& aIntrinsicRatio, FitType aFitType) { - if (aIntrinsicRatio.width <= 0 && aIntrinsicRatio.height <= 0) { + if (!aIntrinsicRatio) { return aConstrainingSize; } - float scaleX = double(aConstrainingSize.width) / aIntrinsicRatio.width; - float scaleY = double(aConstrainingSize.height) / aIntrinsicRatio.height; + // Suppose we're doing a "contain" fit. If the image's aspect ratio has a + // "fatter" shape than the constraint area, then we need to use the + // constraint area's full width, and we need to use the aspect ratio to + // produce a height. ON the other hand, if the aspect ratio is "skinnier", we + // use the constraint area's full height, and we use the aspect ratio to + // produce a width. (If instead we're doing a "cover" fit, then it can easily + // be seen that we should do precisely the opposite.) + // + // This is equivalent to the more descriptive alternative: + // + // AspectRatio::FromSize(aConstrainingSize) < aIntrinsicRatio + // + // But gracefully handling the case where one of the two dimensions from + // aConstrainingSize is zero. This is easy to prove since: + // + // aConstrainingSize.width / aConstrainingSize.height < aIntrinsicRatio + // + // Is trivially equivalent to: + // + // aIntrinsicRatio.width < aIntrinsicRatio * aConstrainingSize.height + // + // For the cases where height is not zero. + // + // We use float math here to avoid losing precision for very lareg backgrounds + // since we use saturating nscoord math otherwise. + const float constraintWidth = float(aConstrainingSize.width); + const float hypotheticalWidth = + aIntrinsicRatio.ApplyToFloat(aConstrainingSize.height); + nsSize size; - if ((aFitType == CONTAIN) == (scaleX < scaleY)) { + if ((aFitType == CONTAIN) == (constraintWidth < hypotheticalWidth)) { size.width = aConstrainingSize.width; - size.height = NSCoordSaturatingNonnegativeMultiply( - aIntrinsicRatio.height, scaleX); + size.height = aIntrinsicRatio.Inverted().ApplyTo(aConstrainingSize.width); // If we're reducing the size by less than one css pixel, then just use the // constraining size. if (aFitType == CONTAIN && aConstrainingSize.height - size.height < nsPresContext::AppUnitsPerCSSPixel()) { size.height = aConstrainingSize.height; } } else { - size.width = NSCoordSaturatingNonnegativeMultiply( - aIntrinsicRatio.width, scaleY); + size.height = aConstrainingSize.height; + size.width = aIntrinsicRatio.ApplyTo(aConstrainingSize.height); if (aFitType == CONTAIN && aConstrainingSize.width - size.width < nsPresContext::AppUnitsPerCSSPixel()) { size.width = aConstrainingSize.width; } - size.height = aConstrainingSize.height; } return size; } diff --git a/layout/base/nsCSSRendering.h b/layout/base/nsCSSRendering.h index 791e9656e..8ebeb7537 100644 --- a/layout/base/nsCSSRendering.h +++ b/layout/base/nsCSSRendering.h @@ -17,6 +17,7 @@ #include "nsLayoutUtils.h" #include "nsStyleStruct.h" #include "nsIFrame.h" +#include "mozilla/AspectRatio.h" class gfxDrawable; class nsStyleContext; @@ -41,8 +42,7 @@ class ImageContainer; struct CSSSizeOrRatio { CSSSizeOrRatio() - : mRatio(0, 0) - , mHasWidth(false) + : mHasWidth(false) , mHasHeight(false) {} bool CanComputeConcreteSize() const @@ -50,12 +50,12 @@ struct CSSSizeOrRatio return mHasWidth + mHasHeight + HasRatio() >= 2; } bool IsConcrete() const { return mHasWidth && mHasHeight; } - bool HasRatio() const { return mRatio.width > 0 && mRatio.height > 0; } + bool HasRatio() const { return !!mRatio; } bool IsEmpty() const { return (mHasWidth && mWidth <= 0) || (mHasHeight && mHeight <= 0) || - mRatio.width <= 0 || mRatio.height <= 0; + !mRatio; } // CanComputeConcreteSize must return true when ComputeConcreteSize is @@ -67,7 +67,7 @@ struct CSSSizeOrRatio mWidth = aWidth; mHasWidth = true; if (mHasHeight) { - mRatio = nsSize(mWidth, mHeight); + mRatio = AspectRatio::FromSize(mWidth, mHeight); } } void SetHeight(nscoord aHeight) @@ -75,7 +75,7 @@ struct CSSSizeOrRatio mHeight = aHeight; mHasHeight = true; if (mHasWidth) { - mRatio = nsSize(mWidth, mHeight); + mRatio = AspectRatio::FromSize(mWidth, mHeight); } } void SetSize(const nsSize& aSize) @@ -84,16 +84,16 @@ struct CSSSizeOrRatio mHeight = aSize.height; mHasWidth = true; mHasHeight = true; - mRatio = aSize; + mRatio = AspectRatio::FromSize(mWidth, mHeight); } - void SetRatio(const nsSize& aRatio) + void SetRatio(const AspectRatio& aRatio) { MOZ_ASSERT(!mHasWidth || !mHasHeight, "Probably shouldn't be setting a ratio if we have a concrete size"); mRatio = aRatio; } - nsSize mRatio; + AspectRatio mRatio; nscoord mWidth; nscoord mHeight; bool mHasWidth; @@ -184,11 +184,9 @@ public: /** * Compute the size of the rendered image using either the 'cover' or * 'contain' constraints (aFitType). - * aIntrinsicRatio may be an invalid ratio, that is one or both of its - * dimensions can be less than or equal to zero. */ static nsSize ComputeConstrainedSize(const nsSize& aConstrainingSize, - const nsSize& aIntrinsicRatio, + const mozilla::AspectRatio& aIntrinsicRatio, FitType aFitType); /** * Compute the size of the rendered image (the concrete size) where no cover/ diff --git a/layout/base/nsLayoutUtils.cpp b/layout/base/nsLayoutUtils.cpp index fb0b42a6c..5de6f2013 100644 --- a/layout/base/nsLayoutUtils.cpp +++ b/layout/base/nsLayoutUtils.cpp @@ -4045,7 +4045,7 @@ nsLayoutUtils::GetTextShadowRectsUnion(const nsRect& aTextAndDecorationsRect, enum ObjectDimensionType { eWidth, eHeight }; static nscoord ComputeMissingDimension(const nsSize& aDefaultObjectSize, - const nsSize& aIntrinsicRatio, + const AspectRatio& aIntrinsicRatio, const Maybe<nscoord>& aSpecifiedWidth, const Maybe<nscoord>& aSpecifiedHeight, ObjectDimensionType aDimensionToCompute) @@ -4056,21 +4056,15 @@ ComputeMissingDimension(const nsSize& aDefaultObjectSize, // 1. "If the object has an intrinsic aspect ratio, the missing dimension of // the concrete object size is calculated using the intrinsic aspect // ratio and the present dimension." - if (aIntrinsicRatio.width > 0 && aIntrinsicRatio.height > 0) { + if (aIntrinsicRatio) { // Fill in the missing dimension using the intrinsic aspect ratio. - nscoord knownDimensionSize; - float ratio; if (aDimensionToCompute == eWidth) { - knownDimensionSize = *aSpecifiedHeight; - ratio = aIntrinsicRatio.width / aIntrinsicRatio.height; - } else { - knownDimensionSize = *aSpecifiedWidth; - ratio = aIntrinsicRatio.height / aIntrinsicRatio.width; + return aIntrinsicRatio.ApplyTo(*aSpecifiedHeight); } - return NSCoordSaturatingNonnegativeMultiply(knownDimensionSize, ratio); + return aIntrinsicRatio.Inverted().ApplyTo(*aSpecifiedWidth); } - // 2. "Otherwise, if the missing dimension is present in the object’s + // 2. "Otherwise, if the missing dimension is present in the object's // intrinsic dimensions, [...]" // NOTE: *Skipping* this case, because we already know it's not true -- we're // in this function because the missing dimension is *not* present in @@ -4108,7 +4102,7 @@ ComputeMissingDimension(const nsSize& aDefaultObjectSize, static Maybe<nsSize> MaybeComputeObjectFitNoneSize(const nsSize& aDefaultObjectSize, const IntrinsicSize& aIntrinsicSize, - const nsSize& aIntrinsicRatio) + const AspectRatio& aIntrinsicRatio) { // "If the object has an intrinsic height or width, its size is resolved as // if its intrinsic dimensions were given as the specified size." @@ -4155,15 +4149,13 @@ MaybeComputeObjectFitNoneSize(const nsSize& aDefaultObjectSize, static nsSize ComputeConcreteObjectSize(const nsSize& aConstraintSize, const IntrinsicSize& aIntrinsicSize, - const nsSize& aIntrinsicRatio, + const AspectRatio& aIntrinsicRatio, uint8_t aObjectFit) { // Handle default behavior (filling the container) w/ fast early return. // (Also: if there's no valid intrinsic ratio, then we have the "fill" // behavior & just use the constraint size.) - if (MOZ_LIKELY(aObjectFit == NS_STYLE_OBJECT_FIT_FILL) || - aIntrinsicRatio.width == 0 || - aIntrinsicRatio.height == 0) { + if (MOZ_LIKELY(aObjectFit == NS_STYLE_OBJECT_FIT_FILL) || !aIntrinsicRatio) { return aConstraintSize; } @@ -4250,7 +4242,7 @@ HasInitialObjectFitAndPosition(const nsStylePosition* aStylePos) /* static */ nsRect nsLayoutUtils::ComputeObjectDestRect(const nsRect& aConstraintRect, const IntrinsicSize& aIntrinsicSize, - const nsSize& aIntrinsicRatio, + const AspectRatio& aIntrinsicRatio, const nsStylePosition* aStylePos, nsPoint* aAnchorPoint) { @@ -5172,10 +5164,12 @@ nsLayoutUtils::IntrinsicForAxis(PhysicalAxis aAxis, styleMinBSize.GetCoordValue() == 0)) || styleMaxBSize.GetUnit() != eStyleUnit_None) { - nsSize ratio(aFrame->GetIntrinsicRatio()); - nscoord ratioISize = (horizontalAxis ? ratio.width : ratio.height); - nscoord ratioBSize = (horizontalAxis ? ratio.height : ratio.width); - if (ratioBSize != 0) { + AspectRatio ratio = aFrame->GetIntrinsicRatio(); + if (ratio) { + // Convert 'ratio' if necessary, so that it's storing ISize/BSize: + if (!horizontalAxis) { + ratio = ratio.Inverted(); + } AddStateBitToAncestors(aFrame, NS_FRAME_DESCENDANT_INTRINSIC_ISIZE_DEPENDS_ON_BSIZE); @@ -5191,14 +5185,14 @@ nsLayoutUtils::IntrinsicForAxis(PhysicalAxis aAxis, (aPercentageBasis.isNothing() && GetPercentBSize(styleBSize, aFrame, horizontalAxis, h))) { h = std::max(0, h - bSizeTakenByBoxSizing); - result = NSCoordMulDiv(h, ratioISize, ratioBSize); + result = ratio.ApplyTo(h); } if (GetDefiniteSize(styleMaxBSize, aFrame, !isInlineAxis, aPercentageBasis, &h) || (aPercentageBasis.isNothing() && GetPercentBSize(styleMaxBSize, aFrame, horizontalAxis, h))) { h = std::max(0, h - bSizeTakenByBoxSizing); - nscoord maxISize = NSCoordMulDiv(h, ratioISize, ratioBSize); + nscoord maxISize = ratio.ApplyTo(h); if (maxISize < result) { result = maxISize; } @@ -5211,7 +5205,7 @@ nsLayoutUtils::IntrinsicForAxis(PhysicalAxis aAxis, (aPercentageBasis.isNothing() && GetPercentBSize(styleMinBSize, aFrame, horizontalAxis, h))) { h = std::max(0, h - bSizeTakenByBoxSizing); - nscoord minISize = NSCoordMulDiv(h, ratioISize, ratioBSize); + nscoord minISize = ratio.ApplyTo(h); if (minISize > result) { result = minISize; } @@ -6674,12 +6668,12 @@ nsLayoutUtils::DrawSingleImage(gfxContext& aContext, /* static */ void nsLayoutUtils::ComputeSizeForDrawing(imgIContainer *aImage, CSSIntSize& aImageSize, /*outparam*/ - nsSize& aIntrinsicRatio, /*outparam*/ + AspectRatio& aIntrinsicRatio, /*outparam*/ bool& aGotWidth, /*outparam*/ bool& aGotHeight /*outparam*/) { aGotWidth = NS_SUCCEEDED(aImage->GetWidth(&aImageSize.width)); - aGotHeight = NS_SUCCEEDED(aImage->GetHeight(&aImageSize.height)); + aGotHeight = NS_SUCCEEDED(aImage->GetHeight(&aImageSize.height)); bool gotRatio = NS_SUCCEEDED(aImage->GetIntrinsicRatio(&aIntrinsicRatio)); if (!(aGotWidth && aGotHeight) && !gotRatio) { @@ -6687,7 +6681,7 @@ nsLayoutUtils::ComputeSizeForDrawing(imgIContainer *aImage, // decoded) and should return zero size. aGotWidth = aGotHeight = true; aImageSize = CSSIntSize(0, 0); - aIntrinsicRatio = nsSize(0, 0); + aIntrinsicRatio = AspectRatio(); } } @@ -6696,7 +6690,7 @@ nsLayoutUtils::ComputeSizeForDrawingWithFallback(imgIContainer* aImage, const nsSize& aFallbackSize) { CSSIntSize imageSize; - nsSize imageRatio; + AspectRatio imageRatio; bool gotHeight, gotWidth; ComputeSizeForDrawing(aImage, imageSize, imageRatio, gotWidth, gotHeight); @@ -6704,19 +6698,13 @@ nsLayoutUtils::ComputeSizeForDrawingWithFallback(imgIContainer* aImage, // intrinsic ratio of the image. if (gotWidth != gotHeight) { if (!gotWidth) { - if (imageRatio.height != 0) { - imageSize.width = - NSCoordSaturatingNonnegativeMultiply(imageSize.height, - float(imageRatio.width) / - float(imageRatio.height)); + if (imageRatio) { + imageSize.width = imageRatio.ApplyTo(imageSize.height); gotWidth = true; } } else { - if (imageRatio.width != 0) { - imageSize.height = - NSCoordSaturatingNonnegativeMultiply(imageSize.width, - float(imageRatio.height) / - float(imageRatio.width)); + if (imageRatio) { + imageSize.height = imageRatio.Inverted().ApplyTo(imageSize.width); gotHeight = true; } } diff --git a/layout/base/nsLayoutUtils.h b/layout/base/nsLayoutUtils.h index bba1f3265..f4471ce74 100644 --- a/layout/base/nsLayoutUtils.h +++ b/layout/base/nsLayoutUtils.h @@ -65,6 +65,7 @@ struct nsStyleImageOrientation; struct nsOverflowAreas; namespace mozilla { +struct aspectRatio; enum class CSSPseudoElementType : uint8_t; class EventListenerManager; class SVGImageContext; @@ -126,6 +127,7 @@ enum class RelativeTo { */ class nsLayoutUtils { + typedef mozilla::AspectRatio AspectRatio; typedef mozilla::dom::DOMRectList DOMRectList; typedef mozilla::layers::Layer Layer; typedef mozilla::ContainerLayerParameters ContainerLayerParameters; @@ -1258,7 +1260,7 @@ public: */ static nsRect ComputeObjectDestRect(const nsRect& aConstraintRect, const IntrinsicSize& aIntrinsicSize, - const nsSize& aIntrinsicRatio, + const AspectRatio& aIntrinsicRatio, const nsStylePosition* aStylePos, nsPoint* aAnchorPoint = nullptr); @@ -1878,7 +1880,7 @@ public: */ static void ComputeSizeForDrawing(imgIContainer* aImage, CSSIntSize& aImageSize, - nsSize& aIntrinsicRatio, + AspectRatio& aIntrinsicRatio, bool& aGotWidth, bool& aGotHeight); diff --git a/layout/generic/AspectRatio.h b/layout/generic/AspectRatio.h new file mode 100644 index 000000000..0056c0620 --- /dev/null +++ b/layout/generic/AspectRatio.h @@ -0,0 +1,81 @@ +/* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*- */ +/* vim: set ts=8 sts=2 et sw=2 tw=80: */ +/* 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_AspectRatio_h +#define mozilla_AspectRatio_h + +/* The aspect ratio of a box, in a "width / height" format. */ + +#include "mozilla/Attributes.h" +#include "nsCoord.h" +#include <algorithm> +#include <limits> + +namespace mozilla { + +struct AspectRatio { + AspectRatio() : mRatio(0.0f) {} + explicit AspectRatio(float aRatio) : mRatio(std::max(aRatio, 0.0f)) {} + + static AspectRatio FromSize(float aWidth, float aHeight) { + if (aWidth == 0.0f || aHeight == 0.0f) { + return AspectRatio(); + } + return AspectRatio(aWidth / aHeight); + } + + static AspectRatio FromSize(nsSize aSize) { + return FromSize(aSize.width, aSize.height); + } + + static AspectRatio FromSize(nsIntSize aSize) { + return FromSize(aSize.width, aSize.height); + } + + explicit operator bool() const { return mRatio != 0.0f; } + + nscoord ApplyTo(nscoord aCoord) const { + MOZ_DIAGNOSTIC_ASSERT(*this); + return NSCoordSaturatingNonnegativeMultiply(aCoord, mRatio); + } + + float ApplyToFloat(float aFloat) const { + MOZ_DIAGNOSTIC_ASSERT(*this); + return mRatio * aFloat; + } + + // Inverts the ratio, in order to get the height / width ratio. + MOZ_MUST_USE AspectRatio Inverted() const { + if (!*this) { + return AspectRatio(); + } + // Clamp to a small epsilon, in case mRatio is absurdly large & produces + // 0.0f in the division here (so that valid ratios always generate other + // valid ratios when inverted). + return AspectRatio( + std::max(std::numeric_limits<float>::epsilon(), 1.0f / mRatio)); + } + + bool operator==(const AspectRatio& aOther) const { + return mRatio == aOther.mRatio; + } + + bool operator!=(const AspectRatio& aOther) const { + return !(*this == aOther); + } + + bool operator<(const AspectRatio& aOther) const { + return mRatio < aOther.mRatio; + } + + private: + // 0.0f represents no aspect ratio. + float mRatio; +}; + +} // namespace mozilla + +#endif // mozilla_AspectRatio_h diff --git a/layout/generic/moz.build b/layout/generic/moz.build index ad186ef7a..b830470a3 100644 --- a/layout/generic/moz.build +++ b/layout/generic/moz.build @@ -109,6 +109,7 @@ EXPORTS += [ ] EXPORTS.mozilla += [ + 'AspectRatio.h', 'CSSAlignUtils.h', 'ReflowInput.h', 'ReflowOutput.h', diff --git a/layout/generic/nsFlexContainerFrame.cpp b/layout/generic/nsFlexContainerFrame.cpp index 69200117b..a76097e1e 100644 --- a/layout/generic/nsFlexContainerFrame.cpp +++ b/layout/generic/nsFlexContainerFrame.cpp @@ -557,8 +557,8 @@ public: return mFlexShrink * mFlexBaseSize; } - const nsSize& IntrinsicRatio() const { return mIntrinsicRatio; } - bool HasIntrinsicRatio() const { return mIntrinsicRatio != nsSize(); } + const AspectRatio IntrinsicRatio() const { return mIntrinsicRatio; } + bool HasIntrinsicRatio() const { return !!mIntrinsicRatio; } // Getters for margin: // =================== @@ -756,7 +756,7 @@ protected: const float mFlexGrow; const float mFlexShrink; - const nsSize mIntrinsicRatio; + const AspectRatio mIntrinsicRatio; const nsMargin mBorderPadding; nsMargin mMargin; // non-const because we need to resolve auto margins @@ -1520,22 +1520,20 @@ CrossSizeToUseWithRatio(const FlexItem& aFlexItem, } // Convenience function; returns a main-size, given a cross-size and an -// intrinsic ratio. The intrinsic ratio must not have 0 in its cross-axis -// component (or else we'll divide by 0). +// intrinsic ratio. The caller is responsible for ensuring that the passed-in +// intrinsic ratio is not zero. static nscoord MainSizeFromAspectRatio(nscoord aCrossSize, - const nsSize& aIntrinsicRatio, + const AspectRatio& aIntrinsicRatio, const FlexboxAxisTracker& aAxisTracker) { - MOZ_ASSERT(aAxisTracker.GetCrossComponent(aIntrinsicRatio) != 0, + MOZ_ASSERT(aIntrinsicRatio, "Invalid ratio; will divide by 0! Caller should've checked..."); + AspectRatio ratio = aAxisTracker.IsMainAxisHorizontal() + ? aIntrinsicRatio + : aIntrinsicRatio.Inverted(); - if (aAxisTracker.IsCrossAxisHorizontal()) { - // cross axis horiz --> aCrossSize is a width. Converting to height. - return NSCoordMulDiv(aCrossSize, aIntrinsicRatio.height, aIntrinsicRatio.width); - } - // cross axis vert --> aCrossSize is a height. Converting to width. - return NSCoordMulDiv(aCrossSize, aIntrinsicRatio.width, aIntrinsicRatio.height); + return ratio.ApplyTo(aCrossSize); } // Partially resolves "min-[width|height]:auto" and returns the resulting value. @@ -1584,7 +1582,7 @@ PartiallyResolveAutoMinSize(const FlexItem& aFlexItem, // * if the item has an intrinsic aspect ratio, the width (height) calculated // from the aspect ratio and any definite size constraints in the opposite // dimension. - if (aAxisTracker.GetCrossComponent(aFlexItem.IntrinsicRatio()) != 0) { + if (aFlexItem.IntrinsicRatio()) { // We have a usable aspect ratio. (not going to divide by 0) const bool useMinSizeIfCrossSizeIsIndefinite = true; nscoord crossSizeToUseWithRatio = @@ -1617,7 +1615,7 @@ ResolveAutoFlexBasisFromRatio(FlexItem& aFlexItem, // - a definite cross size // then the flex base size is calculated from its inner cross size and the // flex item’s intrinsic aspect ratio. - if (aAxisTracker.GetCrossComponent(aFlexItem.IntrinsicRatio()) != 0) { + if (aFlexItem.IntrinsicRatio()) { // We have a usable aspect ratio. (not going to divide by 0) const bool useMinSizeIfCrossSizeIsIndefinite = false; nscoord crossSizeToUseWithRatio = @@ -1693,8 +1691,7 @@ nsFlexContainerFrame:: // (We'll consider that later, if we need to.) resolvedMinSize = PartiallyResolveAutoMinSize(aFlexItem, aItemReflowInput, aAxisTracker); - if (resolvedMinSize > 0 && - aAxisTracker.GetCrossComponent(aFlexItem.IntrinsicRatio()) == 0) { + if (resolvedMinSize > 0 && !aFlexItem.IntrinsicRatio()) { // We don't have a usable aspect ratio, so we need to consider our // min-content size as another candidate min-size, which we'll have to // min() with the current resolvedMinSize. diff --git a/layout/generic/nsFrame.cpp b/layout/generic/nsFrame.cpp index 07cdbd7e3..49eea547e 100644 --- a/layout/generic/nsFrame.cpp +++ b/layout/generic/nsFrame.cpp @@ -4643,10 +4643,10 @@ nsFrame::GetIntrinsicSize() return IntrinsicSize(); // default is width/height set to eStyleUnit_None } -/* virtual */ nsSize +/* virtual */ AspectRatio nsFrame::GetIntrinsicRatio() { - return nsSize(0, 0); + return AspectRatio(); } /* virtual */ @@ -4660,7 +4660,7 @@ nsFrame::ComputeSize(nsRenderingContext* aRenderingContext, const LogicalSize& aPadding, ComputeSizeFlags aFlags) { - MOZ_ASSERT(GetIntrinsicRatio() == nsSize(0,0), + MOZ_ASSERT(!GetIntrinsicRatio(), "Please override this method and call " "nsFrame::ComputeSizeWithIntrinsicDimensions instead."); LogicalSize result = ComputeAutoSize(aRenderingContext, aWM, @@ -4916,13 +4916,15 @@ LogicalSize nsFrame::ComputeSizeWithIntrinsicDimensions(nsRenderingContext* aRenderingContext, WritingMode aWM, const IntrinsicSize& aIntrinsicSize, - nsSize aIntrinsicRatio, + const AspectRatio& aIntrinsicRatio, const LogicalSize& aCBSize, const LogicalSize& aMargin, const LogicalSize& aBorder, const LogicalSize& aPadding, ComputeSizeFlags aFlags) { + auto logicalRatio = + aWM.IsVertical() ? aIntrinsicRatio.Inverted() : aIntrinsicRatio; const nsStylePosition* stylePos = StylePosition(); const nsStyleCoord* inlineStyleCoord = &stylePos->ISize(aWM); const nsStyleCoord* blockStyleCoord = &stylePos->BSize(aWM); @@ -5183,10 +5185,6 @@ nsFrame::ComputeSizeWithIntrinsicDimensions(nsRenderingContext* aRenderingConte intrinsicBSize = 0; } - NS_ASSERTION(aIntrinsicRatio.width >= 0 && aIntrinsicRatio.height >= 0, - "Intrinsic ratio has a negative component!"); - LogicalSize logicalRatio(aWM, aIntrinsicRatio); - // Now calculate the used values for iSize and bSize: if (isAutoISize) { @@ -5200,9 +5198,29 @@ nsFrame::ComputeSizeWithIntrinsicDimensions(nsRenderingContext* aRenderingConte if (hasIntrinsicISize) { tentISize = intrinsicISize; - } else if (hasIntrinsicBSize && logicalRatio.BSize(aWM) > 0) { - tentISize = NSCoordMulDiv(intrinsicBSize, logicalRatio.ISize(aWM), logicalRatio.BSize(aWM)); - } else if (logicalRatio.ISize(aWM) > 0) { + } else if (hasIntrinsicBSize && logicalRatio) { + // (dholbert) <https://phabricator.services.mozilla.com + // /D29244#change-5faEkbsohV7O> + // This is wrong -- this ApplyTo call (and probably every ApplyTo call + // in this function) would only be valid if we're in a horizontal + // writing mode. It's not valid in a vertical writing mode. If this + // doesn't break tests, that's a bit concerning, and I think it means + // we're missing some test coverage. (That, or I'm misreading things.) + // + // aIntrinsicRatio is stored in terms of physical axes (width/height), + // either of which could be I vs. B axis. So any sort of + // aIntrinsicRatio.ApplyTo(someBSize) operation will be + // potentially-bogus. + // + // You probably want to bring back a logicalRatio variable + // (like the one we used to have here), but now with type AspectRatio. + // It would be equal to either aIntrinsicRatio or + // aIntrinsicRatio.Invert() depending on whether aWM is horizontal or + // vertical. (And hopefully having logical in its name would be a + // reminder that it's in terms of Inline/Block and can be used for + // these sorts of ApplyTo(intrinsicBSize) operations. + tentISize = logicalRatio.ApplyTo(intrinsicBSize); + } else if (logicalRatio) { tentISize = aCBSize.ISize(aWM) - boxSizingToMarginEdgeISize; // XXX scrollbar? if (tentISize < 0) tentISize = 0; } else { @@ -5219,8 +5237,8 @@ nsFrame::ComputeSizeWithIntrinsicDimensions(nsRenderingContext* aRenderingConte if (hasIntrinsicBSize) { tentBSize = intrinsicBSize; - } else if (logicalRatio.ISize(aWM) > 0) { - tentBSize = NSCoordMulDiv(tentISize, logicalRatio.BSize(aWM), logicalRatio.ISize(aWM)); + } else if (logicalRatio) { + tentBSize = logicalRatio.Inverted().ApplyTo(tentISize); } else { tentBSize = nsPresContext::CSSPixelsToAppUnits(150); } @@ -5231,46 +5249,39 @@ nsFrame::ComputeSizeWithIntrinsicDimensions(nsRenderingContext* aRenderingConte stretchB = (stretchI == eStretch ? eStretch : eStretchPreservingRatio); } - if (aIntrinsicRatio != nsSize(0, 0)) { + if (logicalRatio) { if (stretchI == eStretch) { tentISize = iSize; // * / 'stretch' if (stretchB == eStretch) { tentBSize = bSize; // 'stretch' / 'stretch' - } else if (stretchB == eStretchPreservingRatio && logicalRatio.ISize(aWM) > 0) { + } else if (stretchB == eStretchPreservingRatio) { // 'normal' / 'stretch' - tentBSize = NSCoordMulDiv(iSize, logicalRatio.BSize(aWM), logicalRatio.ISize(aWM)); + tentBSize = logicalRatio.Inverted().ApplyTo(iSize); } } else if (stretchB == eStretch) { tentBSize = bSize; // 'stretch' / * (except 'stretch') - if (stretchI == eStretchPreservingRatio && logicalRatio.BSize(aWM) > 0) { + if (stretchI == eStretchPreservingRatio) { // 'stretch' / 'normal' - tentISize = NSCoordMulDiv(bSize, logicalRatio.ISize(aWM), logicalRatio.BSize(aWM)); + tentISize = logicalRatio.ApplyTo(bSize); } } else if (stretchI == eStretchPreservingRatio) { tentISize = iSize; // * (except 'stretch') / 'normal' - if (logicalRatio.ISize(aWM) > 0) { - tentBSize = NSCoordMulDiv(iSize, logicalRatio.BSize(aWM), logicalRatio.ISize(aWM)); - } + tentBSize = logicalRatio.Inverted().ApplyTo(iSize); if (stretchB == eStretchPreservingRatio && tentBSize > bSize) { // Stretch within the CB size with preserved intrinsic ratio. tentBSize = bSize; // 'normal' / 'normal' - if (logicalRatio.BSize(aWM) > 0) { - tentISize = NSCoordMulDiv(bSize, logicalRatio.ISize(aWM), logicalRatio.BSize(aWM)); - } + tentISize = logicalRatio.ApplyTo(bSize); } } else if (stretchB == eStretchPreservingRatio) { tentBSize = bSize; // 'normal' / * (except 'normal' and 'stretch') - if (logicalRatio.BSize(aWM) > 0) { - tentISize = NSCoordMulDiv(bSize, logicalRatio.ISize(aWM), logicalRatio.BSize(aWM)); - } + tentISize = logicalRatio.ApplyTo(bSize); } } // ComputeAutoSizeWithIntrinsicDimensions preserves the ratio when applying // the min/max-size. We don't want that when we have 'stretch' in either // axis because tentISize/tentBSize is likely not according to ratio now. - if (aIntrinsicRatio != nsSize(0, 0) && - stretchI != eStretch && stretchB != eStretch) { + if (logicalRatio && stretchI != eStretch && stretchB != eStretch) { nsSize autoSize = nsLayoutUtils:: ComputeAutoSizeWithIntrinsicDimensions(minISize, minBSize, maxISize, maxBSize, @@ -5291,8 +5302,8 @@ nsFrame::ComputeSizeWithIntrinsicDimensions(nsRenderingContext* aRenderingConte // 'auto' iSize, non-'auto' bSize bSize = NS_CSS_MINMAX(bSize, minBSize, maxBSize); if (stretchI != eStretch) { - if (logicalRatio.BSize(aWM) > 0) { - iSize = NSCoordMulDiv(bSize, logicalRatio.ISize(aWM), logicalRatio.BSize(aWM)); + if (logicalRatio) { + iSize = logicalRatio.ApplyTo(bSize); } else if (hasIntrinsicISize) { if (!((aFlags & ComputeSizeFlags::eIClampMarginBoxMinSize) && intrinsicISize > iSize)) { @@ -5311,8 +5322,8 @@ nsFrame::ComputeSizeWithIntrinsicDimensions(nsRenderingContext* aRenderingConte // non-'auto' iSize, 'auto' bSize iSize = NS_CSS_MINMAX(iSize, minISize, maxISize); if (stretchB != eStretch) { - if (logicalRatio.ISize(aWM) > 0) { - bSize = NSCoordMulDiv(iSize, logicalRatio.BSize(aWM), logicalRatio.ISize(aWM)); + if (logicalRatio) { + bSize = logicalRatio.Inverted().ApplyTo(iSize); } else if (hasIntrinsicBSize) { if (!((aFlags & ComputeSizeFlags::eBClampMarginBoxMinSize) && intrinsicBSize > bSize)) { diff --git a/layout/generic/nsFrame.h b/layout/generic/nsFrame.h index 439e39856..d75555fec 100644 --- a/layout/generic/nsFrame.h +++ b/layout/generic/nsFrame.h @@ -264,7 +264,7 @@ public: IntrinsicISizeOffsetData IntrinsicISizeOffsets(nscoord aPercentageBasis = NS_UNCONSTRAINEDSIZE) override; virtual mozilla::IntrinsicSize GetIntrinsicSize() override; - virtual nsSize GetIntrinsicRatio() override; + virtual mozilla::AspectRatio GetIntrinsicRatio() override; virtual mozilla::LogicalSize ComputeSize(nsRenderingContext* aRenderingContext, @@ -285,7 +285,7 @@ public: nsRenderingContext* aRenderingContext, mozilla::WritingMode aWM, const mozilla::IntrinsicSize& aIntrinsicSize, - nsSize aIntrinsicRatio, + const mozilla::AspectRatio& aIntrinsicRatio, const mozilla::LogicalSize& aCBSize, const mozilla::LogicalSize& aMargin, const mozilla::LogicalSize& aBorder, diff --git a/layout/generic/nsHTMLCanvasFrame.cpp b/layout/generic/nsHTMLCanvasFrame.cpp index f86ec1136..032b95e5b 100644 --- a/layout/generic/nsHTMLCanvasFrame.cpp +++ b/layout/generic/nsHTMLCanvasFrame.cpp @@ -44,21 +44,6 @@ IntrinsicSizeFromCanvasSize(const nsIntSize& aCanvasSizeInPx) return intrinsicSize; } -/* Helper for our nsIFrame::GetIntrinsicRatio() impl. Takes the result of - * "GetCanvasSize()" as a parameter, which may help avoid redundant - * indirect calls to GetCanvasSize(). - * - * @param aCanvasSizeInPx The canvas's size in CSS pixels, as returned - * by GetCanvasSize(). - * @return The canvas's intrinsic ratio, as a nsSize. - */ -static nsSize -IntrinsicRatioFromCanvasSize(const nsIntSize& aCanvasSizeInPx) -{ - return nsSize(nsPresContext::CSSPixelsToAppUnits(aCanvasSizeInPx.width), - nsPresContext::CSSPixelsToAppUnits(aCanvasSizeInPx.height)); -} - class nsDisplayCanvas : public nsDisplayItem { public: nsDisplayCanvas(nsDisplayListBuilder* aBuilder, nsIFrame* aFrame) @@ -92,7 +77,7 @@ public: // Need intrinsic size & ratio, for ComputeObjectDestRect: nsIntSize canvasSize = f->GetCanvasSize(); IntrinsicSize intrinsicSize = IntrinsicSizeFromCanvasSize(canvasSize); - nsSize intrinsicRatio = IntrinsicRatioFromCanvasSize(canvasSize); + AspectRatio intrinsicRatio = AspectRatio::FromSize(canvasSize); const nsRect destRect = nsLayoutUtils::ComputeObjectDestRect(constraintRect, @@ -211,10 +196,15 @@ nsHTMLCanvasFrame::GetIntrinsicSize() return IntrinsicSizeFromCanvasSize(GetCanvasSize()); } -/* virtual */ nsSize +/* virtual */ AspectRatio nsHTMLCanvasFrame::GetIntrinsicRatio() { - return IntrinsicRatioFromCanvasSize(GetCanvasSize()); +/* + if (StyleDisplay()->IsContainSize()) { + return AspectRatio(); + } + */ + return AspectRatio::FromSize(GetCanvasSize()); } /* virtual */ @@ -234,7 +224,7 @@ nsHTMLCanvasFrame::ComputeSize(nsRenderingContext *aRenderingContext, intrinsicSize.width.SetCoordValue(nsPresContext::CSSPixelsToAppUnits(size.width)); intrinsicSize.height.SetCoordValue(nsPresContext::CSSPixelsToAppUnits(size.height)); - nsSize intrinsicRatio = GetIntrinsicRatio(); // won't actually be used + AspectRatio intrinsicRatio = GetIntrinsicRatio(); return ComputeSizeWithIntrinsicDimensions(aRenderingContext, aWM, intrinsicSize, intrinsicRatio, @@ -340,7 +330,7 @@ nsHTMLCanvasFrame::BuildLayer(nsDisplayListBuilder* aBuilder, return nullptr; IntrinsicSize intrinsicSize = IntrinsicSizeFromCanvasSize(canvasSizeInPx); - nsSize intrinsicRatio = IntrinsicRatioFromCanvasSize(canvasSizeInPx); + AspectRatio intrinsicRatio = AspectRatio::FromSize(canvasSizeInPx); nsRect dest = nsLayoutUtils::ComputeObjectDestRect(area, intrinsicSize, intrinsicRatio, diff --git a/layout/generic/nsHTMLCanvasFrame.h b/layout/generic/nsHTMLCanvasFrame.h index b2d159627..8432ad224 100644 --- a/layout/generic/nsHTMLCanvasFrame.h +++ b/layout/generic/nsHTMLCanvasFrame.h @@ -58,7 +58,7 @@ public: virtual nscoord GetMinISize(nsRenderingContext *aRenderingContext) override; virtual nscoord GetPrefISize(nsRenderingContext *aRenderingContext) override; virtual mozilla::IntrinsicSize GetIntrinsicSize() override; - virtual nsSize GetIntrinsicRatio() override; + virtual mozilla::AspectRatio GetIntrinsicRatio() override; virtual mozilla::LogicalSize ComputeSize(nsRenderingContext *aRenderingContext, diff --git a/layout/generic/nsIFrame.h b/layout/generic/nsIFrame.h index 82bcf563a..b3606d0b4 100644 --- a/layout/generic/nsIFrame.h +++ b/layout/generic/nsIFrame.h @@ -27,6 +27,7 @@ #include "FrameProperties.h" #include "LayoutConstants.h" #include "mozilla/layout/FrameChildList.h" +#include "mozilla/AspectRatio.h" #include "mozilla/Maybe.h" #include "mozilla/WritingModes.h" #include "nsDirection.h" @@ -2047,15 +2048,14 @@ public: virtual mozilla::IntrinsicSize GetIntrinsicSize() = 0; /** - * Get the intrinsic ratio of this element, or nsSize(0,0) if it has - * no intrinsic ratio. The intrinsic ratio is the ratio of the - * height/width of a box with an intrinsic size or the intrinsic - * aspect ratio of a scalable vector image without an intrinsic size. + * Get the intrinsic ratio of this element, or a default-constructed + * AspectRatio if it has no intrinsic ratio. * - * Either one of the sides may be zero, indicating a zero or infinite - * ratio. + * The intrinsic ratio is the ratio of the width/height of a box with an + * intrinsic size or the intrinsic aspect ratio of a scalable vector image + * without an intrinsic size. */ - virtual nsSize GetIntrinsicRatio() = 0; + virtual mozilla::AspectRatio GetIntrinsicRatio() = 0; /** * Bit-flags to pass to ComputeSize in |aFlags| parameter. diff --git a/layout/generic/nsImageFrame.cpp b/layout/generic/nsImageFrame.cpp index 03fcbd8e3..68076ce1e 100644 --- a/layout/generic/nsImageFrame.cpp +++ b/layout/generic/nsImageFrame.cpp @@ -138,7 +138,6 @@ NS_IMPL_FRAMEARENA_HELPERS(nsImageFrame) nsImageFrame::nsImageFrame(nsStyleContext* aContext) : nsAtomicContainerFrame(aContext), mComputedSize(0, 0), - mIntrinsicRatio(0, 0), mDisplayingIcon(false), mFirstFrameComplete(false), mReflowCallbackPosted(false), @@ -325,11 +324,11 @@ nsImageFrame::UpdateIntrinsicRatio(imgIContainer* aImage) if (!aImage) return false; - nsSize oldIntrinsicRatio = mIntrinsicRatio; + AspectRatio oldIntrinsicRatio = mIntrinsicRatio; // Set intrinsic ratio to match aImage's reported intrinsic ratio. if (NS_FAILED(aImage->GetIntrinsicRatio(&mIntrinsicRatio))) - mIntrinsicRatio.SizeTo(0, 0); + mIntrinsicRatio = AspectRatio(); return mIntrinsicRatio != oldIntrinsicRatio; } @@ -557,7 +556,7 @@ nsImageFrame::OnSizeAvailable(imgIRequest* aRequest, imgIContainer* aImage) // Have to size to 0,0 so that GetDesiredSize recalculates the size. mIntrinsicSize.width.SetCoordValue(0); mIntrinsicSize.height.SetCoordValue(0); - mIntrinsicRatio.SizeTo(0, 0); + mIntrinsicRatio = AspectRatio(); intrinsicSizeChanged = true; } @@ -672,7 +671,7 @@ nsImageFrame::NotifyNewCurrentRequest(imgIRequest *aRequest, // Have to size to 0,0 so that GetDesiredSize recalculates the size mIntrinsicSize.width.SetCoordValue(0); mIntrinsicSize.height.SetCoordValue(0); - mIntrinsicRatio.SizeTo(0, 0); + mIntrinsicRatio = AspectRatio(); } if (mState & IMAGE_GOTINITIALREFLOW) { // do nothing if we haven't gotten the initial reflow yet @@ -808,7 +807,7 @@ nsImageFrame::EnsureIntrinsicSizeAndRatio() ICON_SIZE + (2 * (ICON_PADDING + ALT_BORDER_WIDTH))); mIntrinsicSize.width.SetCoordValue(edgeLengthToUse); mIntrinsicSize.height.SetCoordValue(edgeLengthToUse); - mIntrinsicRatio.SizeTo(1, 1); + mIntrinsicRatio = AspectRatio(1.0f); } } } @@ -932,7 +931,7 @@ nsImageFrame::GetIntrinsicSize() return mIntrinsicSize; } -/* virtual */ nsSize +/* virtual */ AspectRatio nsImageFrame::GetIntrinsicRatio() { return mIntrinsicRatio; diff --git a/layout/generic/nsImageFrame.h b/layout/generic/nsImageFrame.h index 59af1be32..2414d89df 100644 --- a/layout/generic/nsImageFrame.h +++ b/layout/generic/nsImageFrame.h @@ -86,7 +86,7 @@ public: virtual nscoord GetMinISize(nsRenderingContext *aRenderingContext) override; virtual nscoord GetPrefISize(nsRenderingContext *aRenderingContext) override; virtual mozilla::IntrinsicSize GetIntrinsicSize() override; - virtual nsSize GetIntrinsicRatio() override; + virtual mozilla::AspectRatio GetIntrinsicRatio() override; virtual void Reflow(nsPresContext* aPresContext, ReflowOutput& aDesiredSize, const ReflowInput& aReflowInput, @@ -333,7 +333,7 @@ private: nsCOMPtr<imgIContainer> mPrevImage; nsSize mComputedSize; mozilla::IntrinsicSize mIntrinsicSize; - nsSize mIntrinsicRatio; + mozilla::AspectRatio mIntrinsicRatio; bool mDisplayingIcon; bool mFirstFrameComplete; diff --git a/layout/generic/nsLineLayout.cpp b/layout/generic/nsLineLayout.cpp index 6a15a9cfa..60e4e8c96 100644 --- a/layout/generic/nsLineLayout.cpp +++ b/layout/generic/nsLineLayout.cpp @@ -784,7 +784,7 @@ IsPercentageAware(const nsIFrame* aFrame) // is calculated from the constraint equation used for // block-level, non-replaced elements in normal flow. nsIFrame *f = const_cast<nsIFrame*>(aFrame); - if (f->GetIntrinsicRatio() != nsSize(0, 0) && + if (f->GetIntrinsicRatio() && // Some percents are treated like 'auto', so check != coord pos->mHeight.GetUnit() != eStyleUnit_Coord) { const IntrinsicSize &intrinsicSize = f->GetIntrinsicSize(); diff --git a/layout/generic/nsSubDocumentFrame.cpp b/layout/generic/nsSubDocumentFrame.cpp index fd9a7d32c..31d04a335 100644 --- a/layout/generic/nsSubDocumentFrame.cpp +++ b/layout/generic/nsSubDocumentFrame.cpp @@ -671,7 +671,7 @@ nsSubDocumentFrame::GetIntrinsicSize() return nsAtomicContainerFrame::GetIntrinsicSize(); } -/* virtual */ nsSize +/* virtual */ AspectRatio nsSubDocumentFrame::GetIntrinsicRatio() { nsIFrame* subDocRoot = ObtainIntrinsicSizeFrame(); @@ -771,7 +771,7 @@ nsSubDocumentFrame::Reflow(nsPresContext* aPresContext, // Size & position the view according to 'object-fit' & 'object-position'. nsIFrame* subDocRoot = ObtainIntrinsicSizeFrame(); IntrinsicSize intrinsSize; - nsSize intrinsRatio; + AspectRatio intrinsRatio; if (subDocRoot) { intrinsSize = subDocRoot->GetIntrinsicSize(); intrinsRatio = subDocRoot->GetIntrinsicRatio(); diff --git a/layout/generic/nsSubDocumentFrame.h b/layout/generic/nsSubDocumentFrame.h index 93d908dcc..907d33710 100644 --- a/layout/generic/nsSubDocumentFrame.h +++ b/layout/generic/nsSubDocumentFrame.h @@ -51,7 +51,7 @@ public: virtual nscoord GetPrefISize(nsRenderingContext *aRenderingContext) override; virtual mozilla::IntrinsicSize GetIntrinsicSize() override; - virtual nsSize GetIntrinsicRatio() override; + virtual mozilla::AspectRatio GetIntrinsicRatio() override; virtual mozilla::LogicalSize ComputeAutoSize(nsRenderingContext* aRenderingContext, diff --git a/layout/generic/nsVideoFrame.cpp b/layout/generic/nsVideoFrame.cpp index cea209cb5..6bd6395a3 100644 --- a/layout/generic/nsVideoFrame.cpp +++ b/layout/generic/nsVideoFrame.cpp @@ -217,12 +217,10 @@ nsVideoFrame::BuildLayer(nsDisplayListBuilder* aBuilder, // Convert video size from pixel units into app units, to get an aspect-ratio // (which has to be represented as a nsSize) and an IntrinsicSize that we // can pass to ComputeObjectRenderRect. - nsSize aspectRatio(nsPresContext::CSSPixelsToAppUnits(videoSizeInPx.width), - nsPresContext::CSSPixelsToAppUnits(videoSizeInPx.height)); + auto aspectRatio = AspectRatio::FromSize(videoSizeInPx); IntrinsicSize intrinsicSize; - intrinsicSize.width.SetCoordValue(aspectRatio.width); - intrinsicSize.height.SetCoordValue(aspectRatio.height); - + intrinsicSize.width.SetCoordValue(nsPresContext::CSSPixelsToAppUnits(videoSizeInPx.width)); + intrinsicSize.height.SetCoordValue(nsPresContext::CSSPixelsToAppUnits(videoSizeInPx.height)); nsRect dest = nsLayoutUtils::ComputeObjectDestRect(area, intrinsicSize, aspectRatio, @@ -533,7 +531,9 @@ nsVideoFrame::ComputeSize(nsRenderingContext *aRenderingContext, intrinsicSize.height.SetCoordValue(size.height); // Only video elements have an intrinsic ratio. - nsSize intrinsicRatio = HasVideoElement() ? size : nsSize(0, 0); + auto intrinsicRatio = HasVideoElement() + ? AspectRatio::FromSize(size) + : AspectRatio(); return ComputeSizeWithIntrinsicDimensions(aRenderingContext, aWM, intrinsicSize, intrinsicRatio, @@ -557,14 +557,14 @@ nscoord nsVideoFrame::GetPrefISize(nsRenderingContext *aRenderingContext) return result; } -nsSize nsVideoFrame::GetIntrinsicRatio() +AspectRatio nsVideoFrame::GetIntrinsicRatio() { if (!HasVideoElement()) { // Audio elements have no intrinsic ratio. - return nsSize(0, 0); + return AspectRatio(); } - return GetVideoIntrinsicSize(nullptr); + return AspectRatio::FromSize(GetVideoIntrinsicSize(nullptr)); } bool nsVideoFrame::ShouldDisplayPoster() diff --git a/layout/generic/nsVideoFrame.h b/layout/generic/nsVideoFrame.h index d624ae6b9..f52cd8277 100644 --- a/layout/generic/nsVideoFrame.h +++ b/layout/generic/nsVideoFrame.h @@ -56,7 +56,7 @@ public: /* get the size of the video's display */ nsSize GetVideoIntrinsicSize(nsRenderingContext *aRenderingContext); - virtual nsSize GetIntrinsicRatio() override; + virtual mozilla::AspectRatio GetIntrinsicRatio() override; virtual mozilla::LogicalSize ComputeSize(nsRenderingContext *aRenderingContext, mozilla::WritingMode aWritingMode, diff --git a/layout/style/nsStyleStruct.cpp b/layout/style/nsStyleStruct.cpp index 200f934c5..9270f2960 100644 --- a/layout/style/nsStyleStruct.cpp +++ b/layout/style/nsStyleStruct.cpp @@ -2731,7 +2731,7 @@ nsStyleImageLayers::Size::DependsOnPositioningAreaSize(const nsStyleImage& aImag } if (imgContainer) { CSSIntSize imageSize; - nsSize imageRatio; + AspectRatio imageRatio; bool hasWidth, hasHeight; nsLayoutUtils::ComputeSizeForDrawing(imgContainer, imageSize, imageRatio, hasWidth, hasHeight); @@ -2744,7 +2744,7 @@ nsStyleImageLayers::Size::DependsOnPositioningAreaSize(const nsStyleImage& aImag // If the image has an intrinsic ratio, rendering will depend on frame // size when background-size is all auto. - if (imageRatio != nsSize(0, 0)) { + if (imageRatio) { return mWidthType == mHeightType; } diff --git a/layout/svg/nsSVGOuterSVGFrame.cpp b/layout/svg/nsSVGOuterSVGFrame.cpp index 16dfc2b37..d8cd2cb77 100644 --- a/layout/svg/nsSVGOuterSVGFrame.cpp +++ b/layout/svg/nsSVGOuterSVGFrame.cpp @@ -232,28 +232,38 @@ nsSVGOuterSVGFrame::GetIntrinsicSize() return intrinsicSize; } -/* virtual */ nsSize +/* virtual */ AspectRatio nsSVGOuterSVGFrame::GetIntrinsicRatio() { + // 2020-07-14 (RealityRipple) Firefox Uses a new IsReplacedAndContainSize(this) + // function call [Line 96-99 on trunk]. +/* + static inline bool IsReplacedAndContainSize(const nsSVGOuterSVGFrame* aFrame) { + return aFrame->GetContent->GetParent() && + aFrame->StyleDisplay()->IsContainSize(); + } + */ + // but since contain: size doesn't exist in Pale Moon yet... +/* + if (IsReplacedAndContainSize(this)) { + return AspectRatio(); + } + */ + // We only have an intrinsic size/ratio if our width and height attributes // are both specified and set to non-percentage values, or we have a viewBox // rect: http://www.w3.org/TR/SVGMobile12/coords.html#IntrinsicSizing + // Unfortunately we have to return the ratio as two nscoords whereas what + // we have are two floats. Using app units allows for some floating point + // values to work but really small or large numbers will fail. SVGSVGElement *content = static_cast<SVGSVGElement*>(mContent); nsSVGLength2 &width = content->mLengthAttributes[SVGSVGElement::ATTR_WIDTH]; nsSVGLength2 &height = content->mLengthAttributes[SVGSVGElement::ATTR_HEIGHT]; if (!width.IsPercentage() && !height.IsPercentage()) { - nsSize ratio( - nsPresContext::CSSPixelsToAppUnits(width.GetAnimValue(content)), - nsPresContext::CSSPixelsToAppUnits(height.GetAnimValue(content))); - if (ratio.width < 0) { - ratio.width = 0; - } - if (ratio.height < 0) { - ratio.height = 0; - } - return ratio; + return AspectRatio::FromSize(width.GetAnimValue(content), + height.GetAnimValue(content)); } SVGViewElement* viewElement = content->GetCurrentViewElement(); @@ -267,17 +277,7 @@ nsSVGOuterSVGFrame::GetIntrinsicRatio() } if (viewbox) { - float viewBoxWidth = viewbox->width; - float viewBoxHeight = viewbox->height; - - if (viewBoxWidth < 0.0f) { - viewBoxWidth = 0.0f; - } - if (viewBoxHeight < 0.0f) { - viewBoxHeight = 0.0f; - } - return nsSize(nsPresContext::CSSPixelsToAppUnits(viewBoxWidth), - nsPresContext::CSSPixelsToAppUnits(viewBoxHeight)); + return AspectRatio::FromSize(viewbox->width, viewbox->height); } return nsSVGDisplayContainerFrame::GetIntrinsicRatio(); diff --git a/layout/svg/nsSVGOuterSVGFrame.h b/layout/svg/nsSVGOuterSVGFrame.h index ee59b7d1c..4705b6ebe 100644 --- a/layout/svg/nsSVGOuterSVGFrame.h +++ b/layout/svg/nsSVGOuterSVGFrame.h @@ -42,7 +42,7 @@ public: virtual nscoord GetPrefISize(nsRenderingContext *aRenderingContext) override; virtual mozilla::IntrinsicSize GetIntrinsicSize() override; - virtual nsSize GetIntrinsicRatio() override; + virtual mozilla::AspectRatio GetIntrinsicRatio() override; virtual mozilla::LogicalSize ComputeSize(nsRenderingContext *aRenderingContext, diff --git a/layout/xul/nsImageBoxFrame.cpp b/layout/xul/nsImageBoxFrame.cpp index e88b502ab..5286b6d88 100644 --- a/layout/xul/nsImageBoxFrame.cpp +++ b/layout/xul/nsImageBoxFrame.cpp @@ -402,12 +402,13 @@ nsImageBoxFrame::PaintImage(nsRenderingContext& aRenderingContext, // Determine dest rect based on intrinsic size & ratio, along with // 'object-fit' & 'object-position' properties: IntrinsicSize intrinsicSize; - nsSize intrinsicRatio; + AspectRatio intrinsicRatio; if (mIntrinsicSize.width > 0 && mIntrinsicSize.height > 0) { // Image has a valid size; use it as intrinsic size & ratio. intrinsicSize.width.SetCoordValue(mIntrinsicSize.width); intrinsicSize.height.SetCoordValue(mIntrinsicSize.height); - intrinsicRatio = mIntrinsicSize; + intrinsicRatio = + AspectRatio::FromSize(mIntrinsicSize); } else { // Image doesn't have a (valid) intrinsic size. // Try to look up intrinsic ratio and use that at least. |