зеркало из https://github.com/mozilla/gecko-dev.git
1009 строки
39 KiB
C++
1009 строки
39 KiB
C++
/* -*- 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/. */
|
|
|
|
/* utility functions for drawing borders and backgrounds */
|
|
|
|
#include "nsImageRenderer.h"
|
|
|
|
#include "mozilla/webrender/WebRenderAPI.h"
|
|
|
|
#include "gfxContext.h"
|
|
#include "gfxDrawable.h"
|
|
#include "ImageOps.h"
|
|
#include "mozilla/layers/StackingContextHelper.h"
|
|
#include "mozilla/layers/WebRenderLayerManager.h"
|
|
#include "nsContentUtils.h"
|
|
#include "nsCSSRendering.h"
|
|
#include "nsCSSRenderingGradients.h"
|
|
#include "nsIFrame.h"
|
|
#include "nsStyleStructInlines.h"
|
|
#include "nsSVGDisplayableFrame.h"
|
|
#include "SVGObserverUtils.h"
|
|
#include "nsSVGIntegrationUtils.h"
|
|
#include "mozilla/layers/WebRenderLayerManager.h"
|
|
|
|
using namespace mozilla;
|
|
using namespace mozilla::gfx;
|
|
using namespace mozilla::image;
|
|
using namespace mozilla::layers;
|
|
|
|
nsSize
|
|
CSSSizeOrRatio::ComputeConcreteSize() const
|
|
{
|
|
NS_ASSERTION(CanComputeConcreteSize(), "Cannot compute");
|
|
if (mHasWidth && mHasHeight) {
|
|
return nsSize(mWidth, mHeight);
|
|
}
|
|
if (mHasWidth) {
|
|
nscoord height = NSCoordSaturatingNonnegativeMultiply(
|
|
mWidth,
|
|
double(mRatio.height) / mRatio.width);
|
|
return nsSize(mWidth, height);
|
|
}
|
|
|
|
MOZ_ASSERT(mHasHeight);
|
|
nscoord width = NSCoordSaturatingNonnegativeMultiply(
|
|
mHeight,
|
|
double(mRatio.width) / mRatio.height);
|
|
return nsSize(width, mHeight);
|
|
}
|
|
|
|
nsImageRenderer::nsImageRenderer(nsIFrame* aForFrame,
|
|
const nsStyleImage* aImage,
|
|
uint32_t aFlags)
|
|
: mForFrame(aForFrame)
|
|
, mImage(aImage)
|
|
, mType(aImage->GetType())
|
|
, mImageContainer(nullptr)
|
|
, mGradientData(nullptr)
|
|
, mPaintServerFrame(nullptr)
|
|
, mPrepareResult(ImgDrawResult::NOT_READY)
|
|
, mSize(0, 0)
|
|
, mFlags(aFlags)
|
|
, mExtendMode(ExtendMode::CLAMP)
|
|
, mMaskOp(NS_STYLE_MASK_MODE_MATCH_SOURCE)
|
|
{
|
|
}
|
|
|
|
nsImageRenderer::~nsImageRenderer()
|
|
{
|
|
}
|
|
|
|
static bool
|
|
ShouldTreatAsCompleteDueToSyncDecode(const nsStyleImage* aImage,
|
|
uint32_t aFlags)
|
|
{
|
|
if (!(aFlags & nsImageRenderer::FLAG_SYNC_DECODE_IMAGES)) {
|
|
return false;
|
|
}
|
|
|
|
if (aImage->GetType() != eStyleImageType_Image) {
|
|
return false;
|
|
}
|
|
|
|
imgRequestProxy* req = aImage->GetImageData();
|
|
if (!req) {
|
|
return false;
|
|
}
|
|
|
|
uint32_t status = 0;
|
|
if (NS_FAILED(req->GetImageStatus(&status))) {
|
|
return false;
|
|
}
|
|
|
|
if (status & imgIRequest::STATUS_ERROR) {
|
|
// The image is "complete" since it's a corrupt image. If we created an
|
|
// imgIContainer at all, return true.
|
|
nsCOMPtr<imgIContainer> image;
|
|
req->GetImage(getter_AddRefs(image));
|
|
return bool(image);
|
|
}
|
|
|
|
if (!(status & imgIRequest::STATUS_LOAD_COMPLETE)) {
|
|
// We must have loaded all of the image's data and the size must be
|
|
// available, or else sync decoding won't be able to decode the image.
|
|
return false;
|
|
}
|
|
|
|
return true;
|
|
}
|
|
|
|
bool
|
|
nsImageRenderer::PrepareImage()
|
|
{
|
|
if (mImage->IsEmpty()) {
|
|
mPrepareResult = ImgDrawResult::BAD_IMAGE;
|
|
return false;
|
|
}
|
|
|
|
if (!mImage->IsComplete()) {
|
|
// Make sure the image is actually decoding.
|
|
bool frameComplete = mImage->StartDecoding();
|
|
|
|
// Check again to see if we finished.
|
|
// We cannot prepare the image for rendering if it is not fully loaded.
|
|
// Special case: If we requested a sync decode and the image has loaded, push
|
|
// on through because the Draw() will do a sync decode then.
|
|
if (!(frameComplete || mImage->IsComplete()) &&
|
|
!ShouldTreatAsCompleteDueToSyncDecode(mImage, mFlags)) {
|
|
mPrepareResult = ImgDrawResult::NOT_READY;
|
|
return false;
|
|
}
|
|
}
|
|
|
|
switch (mType) {
|
|
case eStyleImageType_Image: {
|
|
MOZ_ASSERT(mImage->GetImageData(),
|
|
"must have image data, since we checked IsEmpty above");
|
|
nsCOMPtr<imgIContainer> srcImage;
|
|
DebugOnly<nsresult> rv =
|
|
mImage->GetImageData()->GetImage(getter_AddRefs(srcImage));
|
|
MOZ_ASSERT(NS_SUCCEEDED(rv) && srcImage,
|
|
"If GetImage() is failing, mImage->IsComplete() "
|
|
"should have returned false");
|
|
|
|
if (!mImage->GetCropRect()) {
|
|
mImageContainer.swap(srcImage);
|
|
} else {
|
|
nsIntRect actualCropRect;
|
|
bool isEntireImage;
|
|
bool success =
|
|
mImage->ComputeActualCropRect(actualCropRect, &isEntireImage);
|
|
if (!success || actualCropRect.IsEmpty()) {
|
|
// The cropped image has zero size
|
|
mPrepareResult = ImgDrawResult::BAD_IMAGE;
|
|
return false;
|
|
}
|
|
if (isEntireImage) {
|
|
// The cropped image is identical to the source image
|
|
mImageContainer.swap(srcImage);
|
|
} else {
|
|
nsCOMPtr<imgIContainer> subImage = ImageOps::Clip(srcImage,
|
|
actualCropRect,
|
|
Nothing());
|
|
mImageContainer.swap(subImage);
|
|
}
|
|
}
|
|
mPrepareResult = ImgDrawResult::SUCCESS;
|
|
break;
|
|
}
|
|
case eStyleImageType_Gradient:
|
|
mGradientData = mImage->GetGradientData();
|
|
mPrepareResult = ImgDrawResult::SUCCESS;
|
|
break;
|
|
case eStyleImageType_Element:
|
|
{
|
|
nsAutoString elementId =
|
|
NS_LITERAL_STRING("#") + nsDependentAtomString(mImage->GetElementId());
|
|
nsCOMPtr<nsIURI> targetURI;
|
|
nsCOMPtr<nsIURI> base = mForFrame->GetContent()->GetBaseURI();
|
|
nsContentUtils::NewURIWithDocumentCharset(getter_AddRefs(targetURI), elementId,
|
|
mForFrame->GetContent()->GetUncomposedDoc(), base);
|
|
nsSVGPaintingProperty* property = SVGObserverUtils::GetPaintingPropertyForURI(
|
|
targetURI, mForFrame->FirstContinuation(),
|
|
SVGObserverUtils::BackgroundImageProperty());
|
|
if (!property) {
|
|
mPrepareResult = ImgDrawResult::BAD_IMAGE;
|
|
return false;
|
|
}
|
|
|
|
// If the referenced element is an <img>, <canvas>, or <video> element,
|
|
// prefer SurfaceFromElement as it's more reliable.
|
|
mImageElementSurface =
|
|
nsLayoutUtils::SurfaceFromElement(property->GetReferencedElement());
|
|
if (!mImageElementSurface.GetSourceSurface()) {
|
|
nsIFrame* paintServerFrame = property->GetReferencedFrame();
|
|
// If there's no referenced frame, or the referenced frame is
|
|
// non-displayable SVG, then we have nothing valid to paint.
|
|
if (!paintServerFrame ||
|
|
(paintServerFrame->IsFrameOfType(nsIFrame::eSVG) &&
|
|
!paintServerFrame->IsFrameOfType(nsIFrame::eSVGPaintServer) &&
|
|
!static_cast<nsSVGDisplayableFrame*>(do_QueryFrame(paintServerFrame)))) {
|
|
mPrepareResult = ImgDrawResult::BAD_IMAGE;
|
|
return false;
|
|
}
|
|
mPaintServerFrame = paintServerFrame;
|
|
}
|
|
|
|
mPrepareResult = ImgDrawResult::SUCCESS;
|
|
break;
|
|
}
|
|
case eStyleImageType_Null:
|
|
default:
|
|
break;
|
|
}
|
|
|
|
return IsReady();
|
|
}
|
|
|
|
CSSSizeOrRatio
|
|
nsImageRenderer::ComputeIntrinsicSize()
|
|
{
|
|
NS_ASSERTION(IsReady(), "Ensure PrepareImage() has returned true "
|
|
"before calling me");
|
|
|
|
CSSSizeOrRatio result;
|
|
switch (mType) {
|
|
case eStyleImageType_Image:
|
|
{
|
|
bool haveWidth, haveHeight;
|
|
CSSIntSize imageIntSize;
|
|
nsLayoutUtils::ComputeSizeForDrawing(mImageContainer, imageIntSize,
|
|
result.mRatio, haveWidth, haveHeight);
|
|
if (haveWidth) {
|
|
result.SetWidth(nsPresContext::CSSPixelsToAppUnits(imageIntSize.width));
|
|
}
|
|
if (haveHeight) {
|
|
result.SetHeight(nsPresContext::CSSPixelsToAppUnits(imageIntSize.height));
|
|
}
|
|
|
|
// If we know the aspect ratio and one of the dimensions,
|
|
// we can compute the other missing width or height.
|
|
if (!haveHeight && haveWidth && result.mRatio.width != 0) {
|
|
nscoord intrinsicHeight =
|
|
NSCoordSaturatingNonnegativeMultiply(imageIntSize.width,
|
|
float(result.mRatio.height) /
|
|
float(result.mRatio.width));
|
|
result.SetHeight(nsPresContext::CSSPixelsToAppUnits(intrinsicHeight));
|
|
} else if (haveHeight && !haveWidth && result.mRatio.height != 0) {
|
|
nscoord intrinsicWidth =
|
|
NSCoordSaturatingNonnegativeMultiply(imageIntSize.height,
|
|
float(result.mRatio.width) /
|
|
float(result.mRatio.height));
|
|
result.SetWidth(nsPresContext::CSSPixelsToAppUnits(intrinsicWidth));
|
|
}
|
|
|
|
break;
|
|
}
|
|
case eStyleImageType_Element:
|
|
{
|
|
// XXX element() should have the width/height of the referenced element,
|
|
// and that element's ratio, if it matches. If it doesn't match, it
|
|
// should have no width/height or ratio. See element() in CSS images:
|
|
// <http://dev.w3.org/csswg/css-images-4/#element-notation>.
|
|
// Make sure to change nsStyleImageLayers::Size::DependsOnFrameSize
|
|
// when fixing this!
|
|
if (mPaintServerFrame) {
|
|
// SVG images have no intrinsic size
|
|
if (!mPaintServerFrame->IsFrameOfType(nsIFrame::eSVG)) {
|
|
// The intrinsic image size for a generic nsIFrame paint server is
|
|
// the union of the border-box rects of all of its continuations,
|
|
// rounded to device pixels.
|
|
int32_t appUnitsPerDevPixel =
|
|
mForFrame->PresContext()->AppUnitsPerDevPixel();
|
|
result.SetSize(
|
|
IntSizeToAppUnits(
|
|
nsSVGIntegrationUtils::GetContinuationUnionSize(mPaintServerFrame).
|
|
ToNearestPixels(appUnitsPerDevPixel),
|
|
appUnitsPerDevPixel));
|
|
}
|
|
} else {
|
|
NS_ASSERTION(mImageElementSurface.GetSourceSurface(),
|
|
"Surface should be ready.");
|
|
IntSize surfaceSize = mImageElementSurface.mSize;
|
|
result.SetSize(
|
|
nsSize(nsPresContext::CSSPixelsToAppUnits(surfaceSize.width),
|
|
nsPresContext::CSSPixelsToAppUnits(surfaceSize.height)));
|
|
}
|
|
break;
|
|
}
|
|
case eStyleImageType_Gradient:
|
|
// Per <http://dev.w3.org/csswg/css3-images/#gradients>, gradients have no
|
|
// intrinsic dimensions.
|
|
case eStyleImageType_Null:
|
|
default:
|
|
break;
|
|
}
|
|
|
|
return result;
|
|
}
|
|
|
|
/* static */ nsSize
|
|
nsImageRenderer::ComputeConcreteSize(const CSSSizeOrRatio& aSpecifiedSize,
|
|
const CSSSizeOrRatio& aIntrinsicSize,
|
|
const nsSize& aDefaultSize)
|
|
{
|
|
// The specified size is fully specified, just use that
|
|
if (aSpecifiedSize.IsConcrete()) {
|
|
return aSpecifiedSize.ComputeConcreteSize();
|
|
}
|
|
|
|
MOZ_ASSERT(!aSpecifiedSize.mHasWidth || !aSpecifiedSize.mHasHeight);
|
|
|
|
if (!aSpecifiedSize.mHasWidth && !aSpecifiedSize.mHasHeight) {
|
|
// no specified size, try using the intrinsic size
|
|
if (aIntrinsicSize.CanComputeConcreteSize()) {
|
|
return aIntrinsicSize.ComputeConcreteSize();
|
|
}
|
|
|
|
if (aIntrinsicSize.mHasWidth) {
|
|
return nsSize(aIntrinsicSize.mWidth, aDefaultSize.height);
|
|
}
|
|
if (aIntrinsicSize.mHasHeight) {
|
|
return nsSize(aDefaultSize.width, aIntrinsicSize.mHeight);
|
|
}
|
|
|
|
// couldn't use the intrinsic size either, revert to using the default size
|
|
return ComputeConstrainedSize(aDefaultSize,
|
|
aIntrinsicSize.mRatio,
|
|
CONTAIN);
|
|
}
|
|
|
|
MOZ_ASSERT(aSpecifiedSize.mHasWidth || aSpecifiedSize.mHasHeight);
|
|
|
|
// The specified height is partial, try to compute the missing part.
|
|
if (aSpecifiedSize.mHasWidth) {
|
|
nscoord height;
|
|
if (aIntrinsicSize.HasRatio()) {
|
|
height = NSCoordSaturatingNonnegativeMultiply(
|
|
aSpecifiedSize.mWidth,
|
|
double(aIntrinsicSize.mRatio.height) / aIntrinsicSize.mRatio.width);
|
|
} else if (aIntrinsicSize.mHasHeight) {
|
|
height = aIntrinsicSize.mHeight;
|
|
} else {
|
|
height = aDefaultSize.height;
|
|
}
|
|
return nsSize(aSpecifiedSize.mWidth, height);
|
|
}
|
|
|
|
MOZ_ASSERT(aSpecifiedSize.mHasHeight);
|
|
nscoord width;
|
|
if (aIntrinsicSize.HasRatio()) {
|
|
width = NSCoordSaturatingNonnegativeMultiply(
|
|
aSpecifiedSize.mHeight,
|
|
double(aIntrinsicSize.mRatio.width) / aIntrinsicSize.mRatio.height);
|
|
} else if (aIntrinsicSize.mHasWidth) {
|
|
width = aIntrinsicSize.mWidth;
|
|
} else {
|
|
width = aDefaultSize.width;
|
|
}
|
|
return nsSize(width, aSpecifiedSize.mHeight);
|
|
}
|
|
|
|
/* static */ nsSize
|
|
nsImageRenderer::ComputeConstrainedSize(const nsSize& aConstrainingSize,
|
|
const nsSize& aIntrinsicRatio,
|
|
FitType aFitType)
|
|
{
|
|
if (aIntrinsicRatio.width <= 0 && aIntrinsicRatio.height <= 0) {
|
|
return aConstrainingSize;
|
|
}
|
|
|
|
float scaleX = double(aConstrainingSize.width) / aIntrinsicRatio.width;
|
|
float scaleY = double(aConstrainingSize.height) / aIntrinsicRatio.height;
|
|
nsSize size;
|
|
if ((aFitType == CONTAIN) == (scaleX < scaleY)) {
|
|
size.width = aConstrainingSize.width;
|
|
size.height = NSCoordSaturatingNonnegativeMultiply(
|
|
aIntrinsicRatio.height, scaleX);
|
|
// 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);
|
|
if (aFitType == CONTAIN && aConstrainingSize.width - size.width < nsPresContext::AppUnitsPerCSSPixel()) {
|
|
size.width = aConstrainingSize.width;
|
|
}
|
|
size.height = aConstrainingSize.height;
|
|
}
|
|
return size;
|
|
}
|
|
|
|
/**
|
|
* mSize is the image's "preferred" size for this particular rendering, while
|
|
* the drawn (aka concrete) size is the actual rendered size after accounting
|
|
* for background-size etc.. The preferred size is most often the image's
|
|
* intrinsic dimensions. But for images with incomplete intrinsic dimensions,
|
|
* the preferred size varies, depending on the specified and default sizes, see
|
|
* nsImageRenderer::Compute*Size.
|
|
*
|
|
* This distinction is necessary because the components of a vector image are
|
|
* specified with respect to its preferred size for a rendering situation, not
|
|
* to its actual rendered size. For example, consider a 4px wide background
|
|
* vector image with no height which contains a left-aligned
|
|
* 2px wide black rectangle with height 100%. If the background-size width is
|
|
* auto (or 4px), the vector image will render 4px wide, and the black rectangle
|
|
* will be 2px wide. If the background-size width is 8px, the vector image will
|
|
* render 8px wide, and the black rectangle will be 4px wide -- *not* 2px wide.
|
|
* In both cases mSize.width will be 4px; but in the first case the returned
|
|
* width will be 4px, while in the second case the returned width will be 8px.
|
|
*/
|
|
void
|
|
nsImageRenderer::SetPreferredSize(const CSSSizeOrRatio& aIntrinsicSize,
|
|
const nsSize& aDefaultSize)
|
|
{
|
|
mSize.width = aIntrinsicSize.mHasWidth
|
|
? aIntrinsicSize.mWidth
|
|
: aDefaultSize.width;
|
|
mSize.height = aIntrinsicSize.mHasHeight
|
|
? aIntrinsicSize.mHeight
|
|
: aDefaultSize.height;
|
|
}
|
|
|
|
// Convert from nsImageRenderer flags to the flags we want to use for drawing in
|
|
// the imgIContainer namespace.
|
|
static uint32_t
|
|
ConvertImageRendererToDrawFlags(uint32_t aImageRendererFlags)
|
|
{
|
|
uint32_t drawFlags = imgIContainer::FLAG_NONE;
|
|
if (aImageRendererFlags & nsImageRenderer::FLAG_SYNC_DECODE_IMAGES) {
|
|
drawFlags |= imgIContainer::FLAG_SYNC_DECODE;
|
|
}
|
|
if (aImageRendererFlags & nsImageRenderer::FLAG_PAINTING_TO_WINDOW) {
|
|
drawFlags |= imgIContainer::FLAG_HIGH_QUALITY_SCALING;
|
|
}
|
|
return drawFlags;
|
|
}
|
|
|
|
ImgDrawResult
|
|
nsImageRenderer::Draw(nsPresContext* aPresContext,
|
|
gfxContext& aRenderingContext,
|
|
const nsRect& aDirtyRect,
|
|
const nsRect& aDest,
|
|
const nsRect& aFill,
|
|
const nsPoint& aAnchor,
|
|
const nsSize& aRepeatSize,
|
|
const CSSIntRect& aSrc,
|
|
float aOpacity)
|
|
{
|
|
if (!IsReady()) {
|
|
NS_NOTREACHED("Ensure PrepareImage() has returned true before calling me");
|
|
return ImgDrawResult::TEMPORARY_ERROR;
|
|
}
|
|
if (aDest.IsEmpty() || aFill.IsEmpty() ||
|
|
mSize.width <= 0 || mSize.height <= 0) {
|
|
return ImgDrawResult::SUCCESS;
|
|
}
|
|
|
|
SamplingFilter samplingFilter = nsLayoutUtils::GetSamplingFilterForFrame(mForFrame);
|
|
ImgDrawResult result = ImgDrawResult::SUCCESS;
|
|
RefPtr<gfxContext> ctx = &aRenderingContext;
|
|
IntRect tmpDTRect;
|
|
|
|
if (ctx->CurrentOp() != CompositionOp::OP_OVER || mMaskOp == NS_STYLE_MASK_MODE_LUMINANCE) {
|
|
gfxRect clipRect = ctx->GetClipExtents(gfxContext::eDeviceSpace);
|
|
tmpDTRect = RoundedOut(ToRect(clipRect));
|
|
if (tmpDTRect.IsEmpty()) {
|
|
return ImgDrawResult::SUCCESS;
|
|
}
|
|
RefPtr<DrawTarget> tempDT =
|
|
gfxPlatform::GetPlatform()->CreateSimilarSoftwareDrawTarget(ctx->GetDrawTarget(),
|
|
tmpDTRect.Size(),
|
|
SurfaceFormat::B8G8R8A8);
|
|
if (!tempDT || !tempDT->IsValid()) {
|
|
gfxDevCrash(LogReason::InvalidContext) << "ImageRenderer::Draw problem " << gfx::hexa(tempDT);
|
|
return ImgDrawResult::TEMPORARY_ERROR;
|
|
}
|
|
tempDT->SetTransform(ctx->GetDrawTarget()->GetTransform() * Matrix::Translation(-tmpDTRect.TopLeft()));
|
|
ctx = gfxContext::CreatePreservingTransformOrNull(tempDT);
|
|
if (!ctx) {
|
|
gfxDevCrash(LogReason::InvalidContext) << "ImageRenderer::Draw problem " << gfx::hexa(tempDT);
|
|
return ImgDrawResult::TEMPORARY_ERROR;
|
|
}
|
|
}
|
|
|
|
switch (mType) {
|
|
case eStyleImageType_Image:
|
|
{
|
|
CSSIntSize imageSize(nsPresContext::AppUnitsToIntCSSPixels(mSize.width),
|
|
nsPresContext::AppUnitsToIntCSSPixels(mSize.height));
|
|
result =
|
|
nsLayoutUtils::DrawBackgroundImage(*ctx, mForFrame,
|
|
aPresContext,
|
|
mImageContainer, imageSize,
|
|
samplingFilter,
|
|
aDest, aFill, aRepeatSize,
|
|
aAnchor, aDirtyRect,
|
|
ConvertImageRendererToDrawFlags(mFlags),
|
|
mExtendMode, aOpacity);
|
|
break;
|
|
}
|
|
case eStyleImageType_Gradient:
|
|
{
|
|
nsCSSGradientRenderer renderer =
|
|
nsCSSGradientRenderer::Create(aPresContext, mGradientData, mSize);
|
|
|
|
renderer.Paint(*ctx, aDest, aFill, aRepeatSize, aSrc, aDirtyRect, aOpacity);
|
|
break;
|
|
}
|
|
case eStyleImageType_Element:
|
|
{
|
|
RefPtr<gfxDrawable> drawable = DrawableForElement(aDest, *ctx);
|
|
if (!drawable) {
|
|
NS_WARNING("Could not create drawable for element");
|
|
return ImgDrawResult::TEMPORARY_ERROR;
|
|
}
|
|
|
|
nsCOMPtr<imgIContainer> image(ImageOps::CreateFromDrawable(drawable));
|
|
result =
|
|
nsLayoutUtils::DrawImage(*ctx, mForFrame->StyleContext(),
|
|
aPresContext, image,
|
|
samplingFilter, aDest, aFill, aAnchor, aDirtyRect,
|
|
ConvertImageRendererToDrawFlags(mFlags),
|
|
aOpacity);
|
|
break;
|
|
}
|
|
case eStyleImageType_Null:
|
|
default:
|
|
break;
|
|
}
|
|
|
|
if (!tmpDTRect.IsEmpty()) {
|
|
DrawTarget* dt = aRenderingContext.GetDrawTarget();
|
|
Matrix oldTransform = dt->GetTransform();
|
|
dt->SetTransform(Matrix());
|
|
if (mMaskOp == NS_STYLE_MASK_MODE_LUMINANCE) {
|
|
RefPtr<SourceSurface> surf = ctx->GetDrawTarget()->IntoLuminanceSource(LuminanceType::LUMINANCE, 1.0f);
|
|
dt->MaskSurface(ColorPattern(Color(0, 0, 0, 1.0f)), surf, tmpDTRect.TopLeft(),
|
|
DrawOptions(1.0f, aRenderingContext.CurrentOp()));
|
|
} else {
|
|
RefPtr<SourceSurface> surf = ctx->GetDrawTarget()->Snapshot();
|
|
dt->DrawSurface(surf, Rect(tmpDTRect.x, tmpDTRect.y, tmpDTRect.width, tmpDTRect.height),
|
|
Rect(0, 0, tmpDTRect.width, tmpDTRect.height),
|
|
DrawSurfaceOptions(SamplingFilter::POINT),
|
|
DrawOptions(1.0f, aRenderingContext.CurrentOp()));
|
|
}
|
|
|
|
dt->SetTransform(oldTransform);
|
|
}
|
|
|
|
return result;
|
|
}
|
|
|
|
ImgDrawResult
|
|
nsImageRenderer::BuildWebRenderDisplayItems(nsPresContext* aPresContext,
|
|
mozilla::wr::DisplayListBuilder& aBuilder,
|
|
mozilla::wr::IpcResourceUpdateQueue& aResources,
|
|
const mozilla::layers::StackingContextHelper& aSc,
|
|
mozilla::layers::WebRenderLayerManager* aManager,
|
|
nsDisplayItem* aItem,
|
|
const nsRect& aDirtyRect,
|
|
const nsRect& aDest,
|
|
const nsRect& aFill,
|
|
const nsPoint& aAnchor,
|
|
const nsSize& aRepeatSize,
|
|
const CSSIntRect& aSrc,
|
|
float aOpacity)
|
|
{
|
|
if (!IsReady()) {
|
|
NS_NOTREACHED("Ensure PrepareImage() has returned true before calling me");
|
|
return ImgDrawResult::NOT_READY;
|
|
}
|
|
if (aDest.IsEmpty() || aFill.IsEmpty() ||
|
|
mSize.width <= 0 || mSize.height <= 0) {
|
|
return ImgDrawResult::SUCCESS;
|
|
}
|
|
|
|
switch (mType) {
|
|
case eStyleImageType_Gradient:
|
|
{
|
|
nsCSSGradientRenderer renderer =
|
|
nsCSSGradientRenderer::Create(aPresContext, mGradientData, mSize);
|
|
|
|
renderer.BuildWebRenderDisplayItems(aBuilder, aSc, aDest, aFill,
|
|
aRepeatSize, aSrc, !aItem->BackfaceIsHidden(), aOpacity);
|
|
break;
|
|
}
|
|
case eStyleImageType_Image:
|
|
{
|
|
uint32_t containerFlags = imgIContainer::FLAG_ASYNC_NOTIFY;
|
|
if (mFlags & nsImageRenderer::FLAG_PAINTING_TO_WINDOW) {
|
|
containerFlags |= imgIContainer::FLAG_HIGH_QUALITY_SCALING;
|
|
}
|
|
if (mFlags & nsImageRenderer::FLAG_SYNC_DECODE_IMAGES) {
|
|
containerFlags |= imgIContainer::FLAG_SYNC_DECODE;
|
|
}
|
|
|
|
const int32_t appUnitsPerDevPixel = mForFrame->PresContext()->AppUnitsPerDevPixel();
|
|
LayoutDeviceRect destRect = LayoutDeviceRect::FromAppUnits(
|
|
aDest, appUnitsPerDevPixel);
|
|
Maybe<SVGImageContext> svgContext;
|
|
gfx::IntSize decodeSize =
|
|
nsLayoutUtils::ComputeImageContainerDrawingParameters(mImageContainer, mForFrame, destRect,
|
|
aSc, containerFlags, svgContext);
|
|
RefPtr<layers::ImageContainer> container =
|
|
mImageContainer->GetImageContainerAtSize(aManager, decodeSize, svgContext, containerFlags);
|
|
if (!container) {
|
|
NS_WARNING("Failed to get image container");
|
|
return ImgDrawResult::NOT_READY;
|
|
}
|
|
|
|
gfx::IntSize size;
|
|
Maybe<wr::ImageKey> key = aManager->CommandBuilder().CreateImageKey(aItem, container, aBuilder,
|
|
aResources, aSc, size, Nothing());
|
|
|
|
if (key.isNothing()) {
|
|
return ImgDrawResult::BAD_IMAGE;
|
|
}
|
|
|
|
nsPoint firstTilePos = nsLayoutUtils::GetBackgroundFirstTilePos(aDest.TopLeft(),
|
|
aFill.TopLeft(),
|
|
aRepeatSize);
|
|
LayoutDeviceRect fillRect = LayoutDeviceRect::FromAppUnits(
|
|
nsRect(firstTilePos.x, firstTilePos.y,
|
|
aFill.XMost() - firstTilePos.x, aFill.YMost() - firstTilePos.y),
|
|
appUnitsPerDevPixel);
|
|
wr::LayoutRect fill = aSc.ToRelativeLayoutRect(fillRect);
|
|
wr::LayoutRect clip = aSc.ToRelativeLayoutRect(
|
|
LayoutDeviceRect::FromAppUnits(aFill, appUnitsPerDevPixel));
|
|
|
|
LayoutDeviceSize gapSize = LayoutDeviceSize::FromAppUnits(
|
|
aRepeatSize - aDest.Size(), appUnitsPerDevPixel);
|
|
|
|
SamplingFilter samplingFilter = nsLayoutUtils::GetSamplingFilterForFrame(mForFrame);
|
|
aBuilder.PushImage(fill, clip, !aItem->BackfaceIsHidden(),
|
|
wr::ToLayoutSize(destRect.Size()), wr::ToLayoutSize(gapSize),
|
|
wr::ToImageRendering(samplingFilter), key.value());
|
|
break;
|
|
}
|
|
default:
|
|
break;
|
|
}
|
|
|
|
return ImgDrawResult::SUCCESS;
|
|
}
|
|
|
|
already_AddRefed<gfxDrawable>
|
|
nsImageRenderer::DrawableForElement(const nsRect& aImageRect,
|
|
gfxContext& aContext)
|
|
{
|
|
NS_ASSERTION(mType == eStyleImageType_Element,
|
|
"DrawableForElement only makes sense if backed by an element");
|
|
if (mPaintServerFrame) {
|
|
// XXX(seth): In order to not pass FLAG_SYNC_DECODE_IMAGES here,
|
|
// DrawableFromPaintServer would have to return a ImgDrawResult indicating
|
|
// whether any images could not be painted because they weren't fully
|
|
// decoded. Even always passing FLAG_SYNC_DECODE_IMAGES won't eliminate all
|
|
// problems, as it won't help if there are image which haven't finished
|
|
// loading, but it's better than nothing.
|
|
int32_t appUnitsPerDevPixel = mForFrame->PresContext()->AppUnitsPerDevPixel();
|
|
nsRect destRect = aImageRect - aImageRect.TopLeft();
|
|
nsIntSize roundedOut = destRect.ToOutsidePixels(appUnitsPerDevPixel).Size();
|
|
IntSize imageSize(roundedOut.width, roundedOut.height);
|
|
RefPtr<gfxDrawable> drawable =
|
|
nsSVGIntegrationUtils::DrawableFromPaintServer(
|
|
mPaintServerFrame, mForFrame, mSize, imageSize,
|
|
aContext.GetDrawTarget(),
|
|
aContext.CurrentMatrixDouble(),
|
|
nsSVGIntegrationUtils::FLAG_SYNC_DECODE_IMAGES);
|
|
|
|
return drawable.forget();
|
|
}
|
|
NS_ASSERTION(mImageElementSurface.GetSourceSurface(), "Surface should be ready.");
|
|
RefPtr<gfxDrawable> drawable = new gfxSurfaceDrawable(
|
|
mImageElementSurface.GetSourceSurface().get(),
|
|
mImageElementSurface.mSize);
|
|
return drawable.forget();
|
|
}
|
|
|
|
ImgDrawResult
|
|
nsImageRenderer::DrawLayer(nsPresContext* aPresContext,
|
|
gfxContext& aRenderingContext,
|
|
const nsRect& aDest,
|
|
const nsRect& aFill,
|
|
const nsPoint& aAnchor,
|
|
const nsRect& aDirty,
|
|
const nsSize& aRepeatSize,
|
|
float aOpacity)
|
|
{
|
|
if (!IsReady()) {
|
|
NS_NOTREACHED("Ensure PrepareImage() has returned true before calling me");
|
|
return ImgDrawResult::TEMPORARY_ERROR;
|
|
}
|
|
if (aDest.IsEmpty() || aFill.IsEmpty() ||
|
|
mSize.width <= 0 || mSize.height <= 0) {
|
|
return ImgDrawResult::SUCCESS;
|
|
}
|
|
|
|
return Draw(aPresContext, aRenderingContext,
|
|
aDirty, aDest, aFill, aAnchor, aRepeatSize,
|
|
CSSIntRect(0, 0,
|
|
nsPresContext::AppUnitsToIntCSSPixels(mSize.width),
|
|
nsPresContext::AppUnitsToIntCSSPixels(mSize.height)),
|
|
aOpacity);
|
|
}
|
|
|
|
ImgDrawResult
|
|
nsImageRenderer::BuildWebRenderDisplayItemsForLayer(nsPresContext* aPresContext,
|
|
mozilla::wr::DisplayListBuilder& aBuilder,
|
|
mozilla::wr::IpcResourceUpdateQueue& aResources,
|
|
const mozilla::layers::StackingContextHelper& aSc,
|
|
mozilla::layers::WebRenderLayerManager* aManager,
|
|
nsDisplayItem* aItem,
|
|
const nsRect& aDest,
|
|
const nsRect& aFill,
|
|
const nsPoint& aAnchor,
|
|
const nsRect& aDirty,
|
|
const nsSize& aRepeatSize,
|
|
float aOpacity)
|
|
{
|
|
if (!IsReady()) {
|
|
NS_NOTREACHED("Ensure PrepareImage() has returned true before calling me");
|
|
return mPrepareResult;
|
|
}
|
|
if (aDest.IsEmpty() || aFill.IsEmpty() ||
|
|
mSize.width <= 0 || mSize.height <= 0) {
|
|
return ImgDrawResult::SUCCESS;
|
|
}
|
|
return BuildWebRenderDisplayItems(aPresContext, aBuilder, aResources, aSc,
|
|
aManager, aItem,
|
|
aDirty, aDest, aFill, aAnchor, aRepeatSize,
|
|
CSSIntRect(0, 0,
|
|
nsPresContext::AppUnitsToIntCSSPixels(mSize.width),
|
|
nsPresContext::AppUnitsToIntCSSPixels(mSize.height)),
|
|
aOpacity);
|
|
}
|
|
|
|
/**
|
|
* Compute the size and position of the master copy of the image. I.e., a single
|
|
* tile used to fill the dest rect.
|
|
* aFill The destination rect to be filled
|
|
* aHFill and aVFill are the repeat patterns for the component -
|
|
* StyleBorderImageRepeat - i.e., how a tiling unit is used to fill aFill
|
|
* aUnitSize The size of the source rect in dest coords.
|
|
*/
|
|
static nsRect
|
|
ComputeTile(nsRect& aFill,
|
|
StyleBorderImageRepeat aHFill,
|
|
StyleBorderImageRepeat aVFill,
|
|
const nsSize& aUnitSize,
|
|
nsSize& aRepeatSize)
|
|
{
|
|
nsRect tile;
|
|
switch (aHFill) {
|
|
case StyleBorderImageRepeat::Stretch:
|
|
tile.x = aFill.x;
|
|
tile.width = aFill.width;
|
|
aRepeatSize.width = tile.width;
|
|
break;
|
|
case StyleBorderImageRepeat::Repeat:
|
|
tile.x = aFill.x + aFill.width/2 - aUnitSize.width/2;
|
|
tile.width = aUnitSize.width;
|
|
aRepeatSize.width = tile.width;
|
|
break;
|
|
case StyleBorderImageRepeat::Round:
|
|
tile.x = aFill.x;
|
|
tile.width = nsCSSRendering::ComputeRoundedSize(aUnitSize.width,
|
|
aFill.width);
|
|
aRepeatSize.width = tile.width;
|
|
break;
|
|
case StyleBorderImageRepeat::Space:
|
|
{
|
|
nscoord space;
|
|
aRepeatSize.width =
|
|
nsCSSRendering::ComputeBorderSpacedRepeatSize(aUnitSize.width,
|
|
aFill.width, space);
|
|
tile.x = aFill.x + space;
|
|
tile.width = aUnitSize.width;
|
|
aFill.x = tile.x;
|
|
aFill.width = aFill.width - space * 2;
|
|
}
|
|
break;
|
|
default:
|
|
NS_NOTREACHED("unrecognized border-image fill style");
|
|
}
|
|
|
|
switch (aVFill) {
|
|
case StyleBorderImageRepeat::Stretch:
|
|
tile.y = aFill.y;
|
|
tile.height = aFill.height;
|
|
aRepeatSize.height = tile.height;
|
|
break;
|
|
case StyleBorderImageRepeat::Repeat:
|
|
tile.y = aFill.y + aFill.height/2 - aUnitSize.height/2;
|
|
tile.height = aUnitSize.height;
|
|
aRepeatSize.height = tile.height;
|
|
break;
|
|
case StyleBorderImageRepeat::Round:
|
|
tile.y = aFill.y;
|
|
tile.height = nsCSSRendering::ComputeRoundedSize(aUnitSize.height,
|
|
aFill.height);
|
|
aRepeatSize.height = tile.height;
|
|
break;
|
|
case StyleBorderImageRepeat::Space:
|
|
{
|
|
nscoord space;
|
|
aRepeatSize.height =
|
|
nsCSSRendering::ComputeBorderSpacedRepeatSize(aUnitSize.height,
|
|
aFill.height, space);
|
|
tile.y = aFill.y + space;
|
|
tile.height = aUnitSize.height;
|
|
aFill.y = tile.y;
|
|
aFill.height = aFill.height - space * 2;
|
|
}
|
|
break;
|
|
default:
|
|
NS_NOTREACHED("unrecognized border-image fill style");
|
|
}
|
|
|
|
return tile;
|
|
}
|
|
|
|
/**
|
|
* Returns true if the given set of arguments will require the tiles which fill
|
|
* the dest rect to be scaled from the source tile. See comment on ComputeTile
|
|
* for argument descriptions.
|
|
*/
|
|
static bool
|
|
RequiresScaling(const nsRect& aFill,
|
|
StyleBorderImageRepeat aHFill,
|
|
StyleBorderImageRepeat aVFill,
|
|
const nsSize& aUnitSize)
|
|
{
|
|
// If we have no tiling in either direction, we can skip the intermediate
|
|
// scaling step.
|
|
return (aHFill != StyleBorderImageRepeat::Stretch ||
|
|
aVFill != StyleBorderImageRepeat::Stretch) &&
|
|
(aUnitSize.width != aFill.width ||
|
|
aUnitSize.height != aFill.height);
|
|
}
|
|
|
|
ImgDrawResult
|
|
nsImageRenderer::DrawBorderImageComponent(nsPresContext* aPresContext,
|
|
gfxContext& aRenderingContext,
|
|
const nsRect& aDirtyRect,
|
|
const nsRect& aFill,
|
|
const CSSIntRect& aSrc,
|
|
StyleBorderImageRepeat aHFill,
|
|
StyleBorderImageRepeat aVFill,
|
|
const nsSize& aUnitSize,
|
|
uint8_t aIndex,
|
|
const Maybe<nsSize>& aSVGViewportSize,
|
|
const bool aHasIntrinsicRatio)
|
|
{
|
|
if (!IsReady()) {
|
|
NS_NOTREACHED("Ensure PrepareImage() has returned true before calling me");
|
|
return ImgDrawResult::BAD_ARGS;
|
|
}
|
|
if (aFill.IsEmpty() || aSrc.IsEmpty()) {
|
|
return ImgDrawResult::SUCCESS;
|
|
}
|
|
|
|
if (mType == eStyleImageType_Image || mType == eStyleImageType_Element) {
|
|
nsCOMPtr<imgIContainer> subImage;
|
|
|
|
// To draw one portion of an image into a border component, we stretch that
|
|
// portion to match the size of that border component and then draw onto.
|
|
// However, preserveAspectRatio attribute of a SVG image may break this rule.
|
|
// To get correct rendering result, we add
|
|
// FLAG_FORCE_PRESERVEASPECTRATIO_NONE flag here, to tell mImage to ignore
|
|
// preserveAspectRatio attribute, and always do non-uniform stretch.
|
|
uint32_t drawFlags = ConvertImageRendererToDrawFlags(mFlags) |
|
|
imgIContainer::FLAG_FORCE_PRESERVEASPECTRATIO_NONE;
|
|
// For those SVG image sources which don't have fixed aspect ratio (i.e.
|
|
// without viewport size and viewBox), we should scale the source uniformly
|
|
// after the viewport size is decided by "Default Sizing Algorithm".
|
|
if (!aHasIntrinsicRatio) {
|
|
drawFlags = drawFlags | imgIContainer::FLAG_FORCE_UNIFORM_SCALING;
|
|
}
|
|
// Retrieve or create the subimage we'll draw.
|
|
nsIntRect srcRect(aSrc.x, aSrc.y, aSrc.width, aSrc.height);
|
|
if (mType == eStyleImageType_Image) {
|
|
if ((subImage = mImage->GetSubImage(aIndex)) == nullptr) {
|
|
subImage = ImageOps::Clip(mImageContainer, srcRect, aSVGViewportSize);
|
|
mImage->SetSubImage(aIndex, subImage);
|
|
}
|
|
} else {
|
|
// This path, for eStyleImageType_Element, is currently slower than it
|
|
// needs to be because we don't cache anything. (In particular, if we have
|
|
// to draw to a temporary surface inside ClippedImage, we don't cache that
|
|
// temporary surface since we immediately throw the ClippedImage we create
|
|
// here away.) However, if we did cache, we'd need to know when to
|
|
// invalidate that cache, and it's not clear that it's worth the trouble
|
|
// since using border-image with -moz-element is rare.
|
|
|
|
RefPtr<gfxDrawable> drawable =
|
|
DrawableForElement(nsRect(nsPoint(), mSize),
|
|
aRenderingContext);
|
|
if (!drawable) {
|
|
NS_WARNING("Could not create drawable for element");
|
|
return ImgDrawResult::TEMPORARY_ERROR;
|
|
}
|
|
|
|
nsCOMPtr<imgIContainer> image(ImageOps::CreateFromDrawable(drawable));
|
|
subImage = ImageOps::Clip(image, srcRect, aSVGViewportSize);
|
|
}
|
|
|
|
MOZ_ASSERT(!aSVGViewportSize ||
|
|
subImage->GetType() == imgIContainer::TYPE_VECTOR);
|
|
|
|
SamplingFilter samplingFilter = nsLayoutUtils::GetSamplingFilterForFrame(mForFrame);
|
|
|
|
if (!RequiresScaling(aFill, aHFill, aVFill, aUnitSize)) {
|
|
return nsLayoutUtils::DrawSingleImage(aRenderingContext,
|
|
aPresContext,
|
|
subImage,
|
|
samplingFilter,
|
|
aFill, aDirtyRect,
|
|
/* no SVGImageContext */ Nothing(),
|
|
drawFlags);
|
|
}
|
|
|
|
nsSize repeatSize;
|
|
nsRect fillRect(aFill);
|
|
nsRect tile = ComputeTile(fillRect, aHFill, aVFill, aUnitSize, repeatSize);
|
|
CSSIntSize imageSize(srcRect.width, srcRect.height);
|
|
return nsLayoutUtils::DrawBackgroundImage(aRenderingContext,
|
|
mForFrame, aPresContext,
|
|
subImage, imageSize, samplingFilter,
|
|
tile, fillRect, repeatSize,
|
|
tile.TopLeft(), aDirtyRect,
|
|
drawFlags,
|
|
ExtendMode::CLAMP, 1.0);
|
|
}
|
|
|
|
nsSize repeatSize(aFill.Size());
|
|
nsRect fillRect(aFill);
|
|
nsRect destTile = RequiresScaling(fillRect, aHFill, aVFill, aUnitSize)
|
|
? ComputeTile(fillRect, aHFill, aVFill, aUnitSize, repeatSize)
|
|
: fillRect;
|
|
return Draw(aPresContext, aRenderingContext, aDirtyRect, destTile,
|
|
fillRect, destTile.TopLeft(), repeatSize, aSrc);
|
|
}
|
|
|
|
bool
|
|
nsImageRenderer::IsRasterImage()
|
|
{
|
|
if (mType != eStyleImageType_Image || !mImageContainer)
|
|
return false;
|
|
return mImageContainer->GetType() == imgIContainer::TYPE_RASTER;
|
|
}
|
|
|
|
bool
|
|
nsImageRenderer::IsAnimatedImage()
|
|
{
|
|
if (mType != eStyleImageType_Image || !mImageContainer)
|
|
return false;
|
|
bool animated = false;
|
|
if (NS_SUCCEEDED(mImageContainer->GetAnimated(&animated)) && animated)
|
|
return true;
|
|
|
|
return false;
|
|
}
|
|
|
|
already_AddRefed<imgIContainer>
|
|
nsImageRenderer::GetImage()
|
|
{
|
|
if (mType != eStyleImageType_Image || !mImageContainer) {
|
|
return nullptr;
|
|
}
|
|
|
|
nsCOMPtr<imgIContainer> image = mImageContainer;
|
|
return image.forget();
|
|
}
|
|
|
|
bool
|
|
nsImageRenderer::IsImageContainerAvailable(layers::LayerManager* aManager, uint32_t aFlags)
|
|
{
|
|
if (!mImageContainer) {
|
|
return false;
|
|
}
|
|
return mImageContainer->IsImageContainerAvailable(aManager, aFlags);
|
|
}
|
|
|
|
void
|
|
nsImageRenderer::PurgeCacheForViewportChange(
|
|
const Maybe<nsSize>& aSVGViewportSize, const bool aHasIntrinsicRatio)
|
|
{
|
|
// Check if we should flush the cached data - only vector images need to do
|
|
// the check since they might not have fixed ratio.
|
|
if (mImageContainer &&
|
|
mImageContainer->GetType() == imgIContainer::TYPE_VECTOR) {
|
|
mImage->PurgeCacheForViewportChange(aSVGViewportSize, aHasIntrinsicRatio);
|
|
}
|
|
}
|
|
|
|
already_AddRefed<nsStyleGradient>
|
|
nsImageRenderer::GetGradientData()
|
|
{
|
|
RefPtr<nsStyleGradient> res = mGradientData;
|
|
return res.forget();
|
|
}
|
|
|