mirror of
https://github.com/mozilla/gecko-dev.git
synced 2024-11-29 15:52:07 +00:00
974d8120f2
This conversion was done with the script:
find . -name '*.cpp' -o -name '*.h' -o -name '*.mm' -o -name '*.idl' | \
egrep -v 'cairo-win32-refptr.h|RefPtr.h|TestRefPtr.cpp' | \
xargs sed -i -e 's/mozilla::TemporaryRef</already_AddRefed</g' \
-e 's/TemporaryRef</already_AddRefed</g'
Manual fixups were performed in the following instances:
- We handled mfbt/RefPtr.h manually so as to not convert TemporaryRef itself
into already_AddRefed.
- The following files had explicit Move() calls added to make up for the lack
of a copy constructor on already_AddRefed:
dom/base/ImageEncoder.cpp
dom/media/MediaTaskQueue.{h,cpp}
dom/media/webaudio/PannerNode.cpp
- A redundant overload for MediaTaskQueue::Dispatch was deleted.
- A few manual fixups were required in mfbt/tests/TestRefPtr.cpp.
- Comments, using declarations, and forward declarations relating to
TemporaryRef in dom/canvas/ and gfx/layers/ were changed to refer to
already_AddRefed.
689 lines
21 KiB
C++
689 lines
21 KiB
C++
/* -*- Mode: C++; tab-width: 20; indent-tabs-mode: nil; c-basic-offset: 2 -*-
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* This Source Code Form is subject to the terms of the Mozilla Public
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* License, v. 2.0. If a copy of the MPL was not distributed with this
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* file, You can obtain one at http://mozilla.org/MPL/2.0/. */
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#ifndef MOZILLA_GFX_HELPERSD2D_H_
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#define MOZILLA_GFX_HELPERSD2D_H_
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#include <d2d1_1.h>
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#include <vector>
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#include <dwrite.h>
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#include <versionhelpers.h>
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#include "2D.h"
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#include "Logging.h"
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#include "Tools.h"
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#include "ImageScaling.h"
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#include "ScaledFontDWrite.h"
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#undef min
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#undef max
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namespace mozilla {
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namespace gfx {
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ID2D1Factory* D2DFactory();
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ID2D1Factory1* D2DFactory1();
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static inline D2D1_POINT_2F D2DPoint(const Point &aPoint)
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{
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return D2D1::Point2F(aPoint.x, aPoint.y);
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}
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static inline D2D1_SIZE_U D2DIntSize(const IntSize &aSize)
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{
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return D2D1::SizeU(aSize.width, aSize.height);
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}
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template <typename T>
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static inline D2D1_RECT_F D2DRect(const T &aRect)
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{
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return D2D1::RectF(aRect.x, aRect.y, aRect.XMost(), aRect.YMost());
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}
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static inline D2D1_EXTEND_MODE D2DExtend(ExtendMode aExtendMode)
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{
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D2D1_EXTEND_MODE extend;
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switch (aExtendMode) {
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case ExtendMode::REPEAT:
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extend = D2D1_EXTEND_MODE_WRAP;
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break;
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case ExtendMode::REFLECT:
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extend = D2D1_EXTEND_MODE_MIRROR;
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break;
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default:
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extend = D2D1_EXTEND_MODE_CLAMP;
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}
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return extend;
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}
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static inline D2D1_BITMAP_INTERPOLATION_MODE D2DFilter(const Filter &aFilter)
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{
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switch (aFilter) {
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case Filter::POINT:
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return D2D1_BITMAP_INTERPOLATION_MODE_NEAREST_NEIGHBOR;
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default:
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return D2D1_BITMAP_INTERPOLATION_MODE_LINEAR;
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}
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}
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static inline D2D1_INTERPOLATION_MODE D2DInterpolationMode(const Filter &aFilter)
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{
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switch (aFilter) {
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case Filter::POINT:
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return D2D1_INTERPOLATION_MODE_NEAREST_NEIGHBOR;
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default:
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return D2D1_INTERPOLATION_MODE_LINEAR;
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}
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}
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static inline D2D1_MATRIX_5X4_F D2DMatrix5x4(const Matrix5x4 &aMatrix)
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{
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return D2D1::Matrix5x4F(aMatrix._11, aMatrix._12, aMatrix._13, aMatrix._14,
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aMatrix._21, aMatrix._22, aMatrix._23, aMatrix._24,
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aMatrix._31, aMatrix._32, aMatrix._33, aMatrix._34,
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aMatrix._41, aMatrix._42, aMatrix._43, aMatrix._44,
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aMatrix._51, aMatrix._52, aMatrix._53, aMatrix._54);
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}
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static inline D2D1_VECTOR_3F D2DVector3D(const Point3D &aPoint)
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{
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return D2D1::Vector3F(aPoint.x, aPoint.y, aPoint.z);
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}
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static inline D2D1_ANTIALIAS_MODE D2DAAMode(AntialiasMode aMode)
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{
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switch (aMode) {
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case AntialiasMode::NONE:
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return D2D1_ANTIALIAS_MODE_ALIASED;
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default:
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return D2D1_ANTIALIAS_MODE_PER_PRIMITIVE;
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}
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}
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static inline D2D1_MATRIX_3X2_F D2DMatrix(const Matrix &aTransform)
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{
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return D2D1::Matrix3x2F(aTransform._11, aTransform._12,
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aTransform._21, aTransform._22,
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aTransform._31, aTransform._32);
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}
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static inline D2D1_COLOR_F D2DColor(const Color &aColor)
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{
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return D2D1::ColorF(aColor.r, aColor.g, aColor.b, aColor.a);
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}
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static inline IntSize ToIntSize(const D2D1_SIZE_U &aSize)
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{
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return IntSize(aSize.width, aSize.height);
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}
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static inline SurfaceFormat ToPixelFormat(const D2D1_PIXEL_FORMAT &aFormat)
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{
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switch(aFormat.format) {
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case DXGI_FORMAT_A8_UNORM:
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case DXGI_FORMAT_R8_UNORM:
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return SurfaceFormat::A8;
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case DXGI_FORMAT_B8G8R8A8_UNORM:
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if (aFormat.alphaMode == D2D1_ALPHA_MODE_IGNORE) {
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return SurfaceFormat::B8G8R8X8;
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} else {
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return SurfaceFormat::B8G8R8A8;
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}
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default:
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return SurfaceFormat::B8G8R8A8;
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}
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}
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static inline Rect ToRect(const D2D1_RECT_F &aRect)
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{
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return Rect(aRect.left, aRect.top, aRect.right - aRect.left, aRect.bottom - aRect.top);
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}
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static inline Matrix ToMatrix(const D2D1_MATRIX_3X2_F &aTransform)
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{
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return Matrix(aTransform._11, aTransform._12,
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aTransform._21, aTransform._22,
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aTransform._31, aTransform._32);
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}
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static inline Point ToPoint(const D2D1_POINT_2F &aPoint)
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{
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return Point(aPoint.x, aPoint.y);
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}
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static inline DXGI_FORMAT DXGIFormat(SurfaceFormat aFormat)
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{
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switch (aFormat) {
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case SurfaceFormat::B8G8R8A8:
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return DXGI_FORMAT_B8G8R8A8_UNORM;
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case SurfaceFormat::B8G8R8X8:
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return DXGI_FORMAT_B8G8R8A8_UNORM;
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case SurfaceFormat::A8:
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return DXGI_FORMAT_A8_UNORM;
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default:
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return DXGI_FORMAT_UNKNOWN;
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}
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}
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static inline D2D1_ALPHA_MODE D2DAlphaModeForFormat(SurfaceFormat aFormat)
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{
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switch (aFormat) {
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case SurfaceFormat::B8G8R8X8:
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return D2D1_ALPHA_MODE_IGNORE;
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default:
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return D2D1_ALPHA_MODE_PREMULTIPLIED;
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}
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}
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static inline D2D1_PIXEL_FORMAT D2DPixelFormat(SurfaceFormat aFormat)
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{
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return D2D1::PixelFormat(DXGIFormat(aFormat), D2DAlphaModeForFormat(aFormat));
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}
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static inline bool D2DSupportsCompositeMode(CompositionOp aOp)
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{
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switch(aOp) {
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case CompositionOp::OP_OVER:
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case CompositionOp::OP_ADD:
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case CompositionOp::OP_ATOP:
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case CompositionOp::OP_OUT:
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case CompositionOp::OP_IN:
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case CompositionOp::OP_SOURCE:
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case CompositionOp::OP_DEST_IN:
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case CompositionOp::OP_DEST_OUT:
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case CompositionOp::OP_DEST_OVER:
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case CompositionOp::OP_DEST_ATOP:
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case CompositionOp::OP_XOR:
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return true;
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default:
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return false;
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}
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}
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static inline D2D1_COMPOSITE_MODE D2DCompositionMode(CompositionOp aOp)
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{
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switch(aOp) {
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case CompositionOp::OP_OVER:
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return D2D1_COMPOSITE_MODE_SOURCE_OVER;
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case CompositionOp::OP_ADD:
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return D2D1_COMPOSITE_MODE_PLUS;
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case CompositionOp::OP_ATOP:
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return D2D1_COMPOSITE_MODE_SOURCE_ATOP;
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case CompositionOp::OP_OUT:
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return D2D1_COMPOSITE_MODE_SOURCE_OUT;
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case CompositionOp::OP_IN:
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return D2D1_COMPOSITE_MODE_SOURCE_IN;
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case CompositionOp::OP_SOURCE:
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return D2D1_COMPOSITE_MODE_SOURCE_COPY;
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case CompositionOp::OP_DEST_IN:
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return D2D1_COMPOSITE_MODE_DESTINATION_IN;
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case CompositionOp::OP_DEST_OUT:
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return D2D1_COMPOSITE_MODE_DESTINATION_OUT;
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case CompositionOp::OP_DEST_OVER:
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return D2D1_COMPOSITE_MODE_DESTINATION_OVER;
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case CompositionOp::OP_DEST_ATOP:
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return D2D1_COMPOSITE_MODE_DESTINATION_ATOP;
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case CompositionOp::OP_XOR:
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return D2D1_COMPOSITE_MODE_XOR;
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default:
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return D2D1_COMPOSITE_MODE_SOURCE_OVER;
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}
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}
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static inline D2D1_BLEND_MODE D2DBlendMode(CompositionOp aOp)
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{
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switch (aOp) {
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case CompositionOp::OP_MULTIPLY:
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return D2D1_BLEND_MODE_MULTIPLY;
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case CompositionOp::OP_SCREEN:
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return D2D1_BLEND_MODE_SCREEN;
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case CompositionOp::OP_OVERLAY:
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return D2D1_BLEND_MODE_OVERLAY;
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case CompositionOp::OP_DARKEN:
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return D2D1_BLEND_MODE_DARKEN;
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case CompositionOp::OP_LIGHTEN:
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return D2D1_BLEND_MODE_LIGHTEN;
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case CompositionOp::OP_COLOR_DODGE:
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return D2D1_BLEND_MODE_COLOR_DODGE;
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case CompositionOp::OP_COLOR_BURN:
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return D2D1_BLEND_MODE_COLOR_BURN;
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case CompositionOp::OP_HARD_LIGHT:
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return D2D1_BLEND_MODE_HARD_LIGHT;
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case CompositionOp::OP_SOFT_LIGHT:
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return D2D1_BLEND_MODE_SOFT_LIGHT;
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case CompositionOp::OP_DIFFERENCE:
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return D2D1_BLEND_MODE_DIFFERENCE;
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case CompositionOp::OP_EXCLUSION:
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return D2D1_BLEND_MODE_EXCLUSION;
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case CompositionOp::OP_HUE:
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return D2D1_BLEND_MODE_HUE;
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case CompositionOp::OP_SATURATION:
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return D2D1_BLEND_MODE_SATURATION;
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case CompositionOp::OP_COLOR:
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return D2D1_BLEND_MODE_COLOR;
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case CompositionOp::OP_LUMINOSITY:
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return D2D1_BLEND_MODE_LUMINOSITY;
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default:
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return D2D1_BLEND_MODE_MULTIPLY;
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}
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}
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static inline bool D2DSupportsPrimitiveBlendMode(CompositionOp aOp)
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{
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switch (aOp) {
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case CompositionOp::OP_OVER:
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// case CompositionOp::OP_SOURCE:
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return true;
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// case CompositionOp::OP_DARKEN:
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case CompositionOp::OP_ADD:
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return IsWindows8Point1OrGreater();
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default:
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return false;
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}
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}
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static inline D2D1_PRIMITIVE_BLEND D2DPrimitiveBlendMode(CompositionOp aOp)
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{
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switch (aOp) {
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case CompositionOp::OP_OVER:
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return D2D1_PRIMITIVE_BLEND_SOURCE_OVER;
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// D2D1_PRIMITIVE_BLEND_COPY should leave pixels out of the source's
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// bounds unchanged, but doesn't- breaking unbounded ops.
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// D2D1_PRIMITIVE_BLEND_MIN doesn't quite work like darken either, as it
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// accounts for the source alpha.
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//
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// case CompositionOp::OP_SOURCE:
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// return D2D1_PRIMITIVE_BLEND_COPY;
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// case CompositionOp::OP_DARKEN:
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// return D2D1_PRIMITIVE_BLEND_MIN;
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case CompositionOp::OP_ADD:
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return D2D1_PRIMITIVE_BLEND_ADD;
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default:
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return D2D1_PRIMITIVE_BLEND_SOURCE_OVER;
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}
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}
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static inline bool IsPatternSupportedByD2D(const Pattern &aPattern)
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{
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if (aPattern.GetType() != PatternType::RADIAL_GRADIENT) {
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return true;
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}
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const RadialGradientPattern *pat =
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static_cast<const RadialGradientPattern*>(&aPattern);
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if (pat->mRadius1 != 0) {
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return false;
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}
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Point diff = pat->mCenter2 - pat->mCenter1;
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if (sqrt(diff.x * diff.x + diff.y * diff.y) >= pat->mRadius2) {
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// Inner point lies outside the circle.
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return false;
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}
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return true;
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}
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/**
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* This structure is used to pass rectangles to our shader constant. We can use
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* this for passing rectangular areas to SetVertexShaderConstant. In the format
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* of a 4 component float(x,y,width,height). Our vertex shader can then use
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* this to construct rectangular positions from the 0,0-1,1 quad that we source
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* it with.
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*/
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struct ShaderConstantRectD3D10
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{
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float mX, mY, mWidth, mHeight;
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ShaderConstantRectD3D10(float aX, float aY, float aWidth, float aHeight)
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: mX(aX), mY(aY), mWidth(aWidth), mHeight(aHeight)
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{ }
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// For easy passing to SetVertexShaderConstantF.
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operator float* () { return &mX; }
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};
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static inline DWRITE_MATRIX
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DWriteMatrixFromMatrix(Matrix &aMatrix)
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{
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DWRITE_MATRIX mat;
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mat.m11 = aMatrix._11;
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mat.m12 = aMatrix._12;
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mat.m21 = aMatrix._21;
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mat.m22 = aMatrix._22;
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mat.dx = aMatrix._31;
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mat.dy = aMatrix._32;
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return mat;
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}
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class AutoDWriteGlyphRun : public DWRITE_GLYPH_RUN
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{
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static const unsigned kNumAutoGlyphs = 256;
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public:
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AutoDWriteGlyphRun() {
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glyphCount = 0;
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}
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~AutoDWriteGlyphRun() {
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if (glyphCount > kNumAutoGlyphs) {
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delete[] glyphIndices;
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delete[] glyphAdvances;
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delete[] glyphOffsets;
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}
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}
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void allocate(unsigned aNumGlyphs) {
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glyphCount = aNumGlyphs;
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if (aNumGlyphs <= kNumAutoGlyphs) {
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glyphIndices = &mAutoIndices[0];
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glyphAdvances = &mAutoAdvances[0];
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glyphOffsets = &mAutoOffsets[0];
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} else {
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glyphIndices = new UINT16[aNumGlyphs];
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glyphAdvances = new FLOAT[aNumGlyphs];
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glyphOffsets = new DWRITE_GLYPH_OFFSET[aNumGlyphs];
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}
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}
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private:
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DWRITE_GLYPH_OFFSET mAutoOffsets[kNumAutoGlyphs];
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FLOAT mAutoAdvances[kNumAutoGlyphs];
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UINT16 mAutoIndices[kNumAutoGlyphs];
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};
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static inline void
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DWriteGlyphRunFromGlyphs(const GlyphBuffer &aGlyphs, ScaledFontDWrite *aFont, AutoDWriteGlyphRun *run)
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{
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run->allocate(aGlyphs.mNumGlyphs);
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FLOAT *advances = const_cast<FLOAT*>(run->glyphAdvances);
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UINT16 *indices = const_cast<UINT16*>(run->glyphIndices);
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DWRITE_GLYPH_OFFSET *offsets = const_cast<DWRITE_GLYPH_OFFSET*>(run->glyphOffsets);
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memset(advances, 0, sizeof(FLOAT) * aGlyphs.mNumGlyphs);
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for (unsigned int i = 0; i < aGlyphs.mNumGlyphs; i++) {
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indices[i] = aGlyphs.mGlyphs[i].mIndex;
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offsets[i].advanceOffset = aGlyphs.mGlyphs[i].mPosition.x;
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offsets[i].ascenderOffset = -aGlyphs.mGlyphs[i].mPosition.y;
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}
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run->bidiLevel = 0;
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run->fontFace = aFont->mFontFace;
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run->fontEmSize = aFont->GetSize();
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run->glyphCount = aGlyphs.mNumGlyphs;
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run->isSideways = FALSE;
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}
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static inline already_AddRefed<ID2D1Geometry>
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ConvertRectToGeometry(const D2D1_RECT_F& aRect)
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{
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RefPtr<ID2D1RectangleGeometry> rectGeom;
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D2DFactory()->CreateRectangleGeometry(&aRect, byRef(rectGeom));
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return rectGeom.forget();
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}
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static inline already_AddRefed<ID2D1Geometry>
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GetTransformedGeometry(ID2D1Geometry *aGeometry, const D2D1_MATRIX_3X2_F &aTransform)
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{
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RefPtr<ID2D1PathGeometry> tmpGeometry;
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D2DFactory()->CreatePathGeometry(byRef(tmpGeometry));
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RefPtr<ID2D1GeometrySink> currentSink;
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tmpGeometry->Open(byRef(currentSink));
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aGeometry->Simplify(D2D1_GEOMETRY_SIMPLIFICATION_OPTION_CUBICS_AND_LINES,
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aTransform, currentSink);
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currentSink->Close();
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return tmpGeometry.forget();
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}
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static inline already_AddRefed<ID2D1Geometry>
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IntersectGeometry(ID2D1Geometry *aGeometryA, ID2D1Geometry *aGeometryB)
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{
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RefPtr<ID2D1PathGeometry> pathGeom;
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D2DFactory()->CreatePathGeometry(byRef(pathGeom));
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RefPtr<ID2D1GeometrySink> sink;
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pathGeom->Open(byRef(sink));
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aGeometryA->CombineWithGeometry(aGeometryB, D2D1_COMBINE_MODE_INTERSECT, nullptr, sink);
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sink->Close();
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return pathGeom.forget();
|
|
}
|
|
|
|
static inline already_AddRefed<ID2D1StrokeStyle>
|
|
CreateStrokeStyleForOptions(const StrokeOptions &aStrokeOptions)
|
|
{
|
|
RefPtr<ID2D1StrokeStyle> style;
|
|
|
|
D2D1_CAP_STYLE capStyle;
|
|
D2D1_LINE_JOIN joinStyle;
|
|
|
|
switch (aStrokeOptions.mLineCap) {
|
|
case CapStyle::BUTT:
|
|
capStyle = D2D1_CAP_STYLE_FLAT;
|
|
break;
|
|
case CapStyle::ROUND:
|
|
capStyle = D2D1_CAP_STYLE_ROUND;
|
|
break;
|
|
case CapStyle::SQUARE:
|
|
capStyle = D2D1_CAP_STYLE_SQUARE;
|
|
break;
|
|
}
|
|
|
|
switch (aStrokeOptions.mLineJoin) {
|
|
case JoinStyle::MITER:
|
|
joinStyle = D2D1_LINE_JOIN_MITER;
|
|
break;
|
|
case JoinStyle::MITER_OR_BEVEL:
|
|
joinStyle = D2D1_LINE_JOIN_MITER_OR_BEVEL;
|
|
break;
|
|
case JoinStyle::ROUND:
|
|
joinStyle = D2D1_LINE_JOIN_ROUND;
|
|
break;
|
|
case JoinStyle::BEVEL:
|
|
joinStyle = D2D1_LINE_JOIN_BEVEL;
|
|
break;
|
|
}
|
|
|
|
|
|
HRESULT hr;
|
|
// We need to check mDashLength in addition to mDashPattern here since if
|
|
// mDashPattern is set but mDashLength is zero then the stroke will fail to
|
|
// paint.
|
|
if (aStrokeOptions.mDashLength > 0 && aStrokeOptions.mDashPattern) {
|
|
typedef std::vector<Float> FloatVector;
|
|
// D2D "helpfully" multiplies the dash pattern by the line width.
|
|
// That's not what cairo does, or is what <canvas>'s dash wants.
|
|
// So fix the multiplication in advance.
|
|
Float lineWidth = aStrokeOptions.mLineWidth;
|
|
FloatVector dash(aStrokeOptions.mDashPattern,
|
|
aStrokeOptions.mDashPattern + aStrokeOptions.mDashLength);
|
|
for (FloatVector::iterator it = dash.begin(); it != dash.end(); ++it) {
|
|
*it /= lineWidth;
|
|
}
|
|
|
|
hr = D2DFactory()->CreateStrokeStyle(
|
|
D2D1::StrokeStyleProperties(capStyle, capStyle,
|
|
capStyle, joinStyle,
|
|
aStrokeOptions.mMiterLimit,
|
|
D2D1_DASH_STYLE_CUSTOM,
|
|
aStrokeOptions.mDashOffset / lineWidth),
|
|
&dash[0], // data() is not C++98, although it's in recent gcc
|
|
// and VC10's STL
|
|
dash.size(),
|
|
byRef(style));
|
|
} else {
|
|
hr = D2DFactory()->CreateStrokeStyle(
|
|
D2D1::StrokeStyleProperties(capStyle, capStyle,
|
|
capStyle, joinStyle,
|
|
aStrokeOptions.mMiterLimit),
|
|
nullptr, 0, byRef(style));
|
|
}
|
|
|
|
if (FAILED(hr)) {
|
|
gfxWarning() << "Failed to create Direct2D stroke style.";
|
|
}
|
|
|
|
return style.forget();
|
|
}
|
|
|
|
// This creates a (partially) uploaded bitmap for a DataSourceSurface. It
|
|
// uploads the minimum requirement and possibly downscales. It adjusts the
|
|
// input Matrix to compensate.
|
|
static inline already_AddRefed<ID2D1Bitmap>
|
|
CreatePartialBitmapForSurface(DataSourceSurface *aSurface, const Matrix &aDestinationTransform,
|
|
const IntSize &aDestinationSize, ExtendMode aExtendMode,
|
|
Matrix &aSourceTransform, ID2D1RenderTarget *aRT,
|
|
const IntRect* aSourceRect = nullptr)
|
|
{
|
|
RefPtr<ID2D1Bitmap> bitmap;
|
|
|
|
// This is where things get complicated. The source surface was
|
|
// created for a surface that was too large to fit in a texture.
|
|
// We'll need to figure out if we can work with a partial upload
|
|
// or downsample in software.
|
|
|
|
Matrix transform = aDestinationTransform;
|
|
Matrix invTransform = transform = aSourceTransform * transform;
|
|
if (!invTransform.Invert()) {
|
|
// Singular transform, nothing to be drawn.
|
|
return nullptr;
|
|
}
|
|
|
|
Rect rect(0, 0, Float(aDestinationSize.width), Float(aDestinationSize.height));
|
|
|
|
// Calculate the rectangle of the source mapped to our surface.
|
|
rect = invTransform.TransformBounds(rect);
|
|
rect.RoundOut();
|
|
|
|
IntSize size = aSurface->GetSize();
|
|
|
|
Rect uploadRect(0, 0, Float(size.width), Float(size.height));
|
|
if (aSourceRect) {
|
|
uploadRect = Rect(aSourceRect->x, aSourceRect->y, aSourceRect->width, aSourceRect->height);
|
|
}
|
|
|
|
// Limit the uploadRect as much as possible without supporting discontiguous uploads
|
|
//
|
|
// region we will paint from
|
|
// uploadRect
|
|
// .---------------. .---------------. resulting uploadRect
|
|
// | |rect | |
|
|
// | .---------. .----. .----. .---------------.
|
|
// | | | ----> | | | | ----> | |
|
|
// | '---------' '----' '----' '---------------'
|
|
// '---------------' '---------------'
|
|
//
|
|
//
|
|
|
|
if (uploadRect.Contains(rect)) {
|
|
// Extend mode is irrelevant, the displayed rect is completely contained
|
|
// by the source bitmap.
|
|
uploadRect = rect;
|
|
} else if (aExtendMode == ExtendMode::CLAMP && uploadRect.Intersects(rect)) {
|
|
// Calculate the rectangle on the source bitmap that touches our
|
|
// surface, and upload that, for ExtendMode::CLAMP we can actually guarantee
|
|
// correct behaviour in this case.
|
|
uploadRect = uploadRect.Intersect(rect);
|
|
|
|
// We now proceed to check if we can limit at least one dimension of the
|
|
// upload rect safely without looking at extend mode.
|
|
} else if (rect.x >= 0 && rect.XMost() < size.width) {
|
|
uploadRect.x = rect.x;
|
|
uploadRect.width = rect.width;
|
|
} else if (rect.y >= 0 && rect.YMost() < size.height) {
|
|
uploadRect.y = rect.y;
|
|
uploadRect.height = rect.height;
|
|
}
|
|
|
|
if (uploadRect.width <= aRT->GetMaximumBitmapSize() &&
|
|
uploadRect.height <= aRT->GetMaximumBitmapSize()) {
|
|
{
|
|
// Scope to auto-Unmap() |mapping|.
|
|
DataSourceSurface::ScopedMap mapping(aSurface, DataSourceSurface::READ);
|
|
if (MOZ2D_WARN_IF(!mapping.IsMapped())) {
|
|
return nullptr;
|
|
}
|
|
|
|
// A partial upload will suffice.
|
|
aRT->CreateBitmap(D2D1::SizeU(uint32_t(uploadRect.width), uint32_t(uploadRect.height)),
|
|
mapping.GetData() + int(uploadRect.x) * 4 + int(uploadRect.y) * mapping.GetStride(),
|
|
mapping.GetStride(),
|
|
D2D1::BitmapProperties(D2DPixelFormat(aSurface->GetFormat())),
|
|
byRef(bitmap));
|
|
}
|
|
|
|
aSourceTransform.PreTranslate(uploadRect.x, uploadRect.y);
|
|
|
|
return bitmap.forget();
|
|
} else {
|
|
int Bpp = BytesPerPixel(aSurface->GetFormat());
|
|
|
|
if (Bpp != 4) {
|
|
// This shouldn't actually happen in practice!
|
|
MOZ_ASSERT(false);
|
|
return nullptr;
|
|
}
|
|
|
|
{
|
|
// Scope to auto-Unmap() |mapping|.
|
|
DataSourceSurface::ScopedMap mapping(aSurface, DataSourceSurface::READ);
|
|
if (MOZ2D_WARN_IF(!mapping.IsMapped())) {
|
|
return nullptr;
|
|
}
|
|
ImageHalfScaler scaler(mapping.GetData(), mapping.GetStride(), size);
|
|
|
|
// Calculate the maximum width/height of the image post transform.
|
|
Point topRight = transform * Point(Float(size.width), 0);
|
|
Point topLeft = transform * Point(0, 0);
|
|
Point bottomRight = transform * Point(Float(size.width), Float(size.height));
|
|
Point bottomLeft = transform * Point(0, Float(size.height));
|
|
|
|
IntSize scaleSize;
|
|
|
|
scaleSize.width = int32_t(std::max(Distance(topRight, topLeft),
|
|
Distance(bottomRight, bottomLeft)));
|
|
scaleSize.height = int32_t(std::max(Distance(topRight, bottomRight),
|
|
Distance(topLeft, bottomLeft)));
|
|
|
|
if (unsigned(scaleSize.width) > aRT->GetMaximumBitmapSize()) {
|
|
// Ok, in this case we'd really want a downscale of a part of the bitmap,
|
|
// perhaps we can do this later but for simplicity let's do something
|
|
// different here and assume it's good enough, this should be rare!
|
|
scaleSize.width = 4095;
|
|
}
|
|
if (unsigned(scaleSize.height) > aRT->GetMaximumBitmapSize()) {
|
|
scaleSize.height = 4095;
|
|
}
|
|
|
|
scaler.ScaleForSize(scaleSize);
|
|
|
|
IntSize newSize = scaler.GetSize();
|
|
|
|
if (newSize.IsEmpty()) {
|
|
return nullptr;
|
|
}
|
|
|
|
aRT->CreateBitmap(D2D1::SizeU(newSize.width, newSize.height),
|
|
scaler.GetScaledData(), scaler.GetStride(),
|
|
D2D1::BitmapProperties(D2DPixelFormat(aSurface->GetFormat())),
|
|
byRef(bitmap));
|
|
|
|
aSourceTransform.PreScale(Float(size.width) / newSize.width,
|
|
Float(size.height) / newSize.height);
|
|
}
|
|
return bitmap.forget();
|
|
}
|
|
}
|
|
|
|
}
|
|
}
|
|
|
|
#endif /* MOZILLA_GFX_HELPERSD2D_H_ */
|