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91b071ed14
gfx::Color is currently misused in many places. The DrawTargets expect the color space to be in device space, e.g. what we are actually going to draw using. Everything sitting above generally deals with sRGB, as specified in CSS. Sometimes we missed the conversion from sRGB to device space when issuing draw calls, and similarly sometimes we converted the color to device space twice. This patch splits the type in two. sRGBColor and DeviceColor now represent sRGB and device color spaces respectively. DrawTarget only accepts DeviceColor, and one can get a DeviceColor from an sRGBColor via the ToDeviceColor helper API. The reftests now pass with color management enabled for everything (e.g. CSS) instead of just tagged raster images. There will be a follow up patch to enable color management everywhere by default on all supported platforms. Differential Revision: https://phabricator.services.mozilla.com/D64771 --HG-- extra : moz-landing-system : lando
332 lines
11 KiB
C++
332 lines
11 KiB
C++
/* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
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/* vim: set ts=8 sts=2 et sw=2 tw=80: */
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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_HELPERSSKIA_H_
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#define MOZILLA_GFX_HELPERSSKIA_H_
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#include "2D.h"
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#include "skia/include/core/SkCanvas.h"
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#include "skia/include/effects/SkDashPathEffect.h"
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#include "skia/include/core/SkShader.h"
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#include "mozilla/Assertions.h"
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#include <vector>
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#include "nsDebug.h"
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namespace mozilla {
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namespace gfx {
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static inline SkColorType GfxFormatToSkiaColorType(SurfaceFormat format) {
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switch (format) {
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case SurfaceFormat::B8G8R8A8:
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return kBGRA_8888_SkColorType;
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case SurfaceFormat::B8G8R8X8:
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// We probably need to do something here.
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return kBGRA_8888_SkColorType;
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case SurfaceFormat::R5G6B5_UINT16:
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return kRGB_565_SkColorType;
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case SurfaceFormat::A8:
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return kAlpha_8_SkColorType;
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default:
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return kRGBA_8888_SkColorType;
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}
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}
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static inline SurfaceFormat SkiaColorTypeToGfxFormat(
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SkColorType aColorType, SkAlphaType aAlphaType = kPremul_SkAlphaType) {
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switch (aColorType) {
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case kBGRA_8888_SkColorType:
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return aAlphaType == kOpaque_SkAlphaType ? SurfaceFormat::B8G8R8X8
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: SurfaceFormat::B8G8R8A8;
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case kRGB_565_SkColorType:
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return SurfaceFormat::R5G6B5_UINT16;
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case kAlpha_8_SkColorType:
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return SurfaceFormat::A8;
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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 SkAlphaType GfxFormatToSkiaAlphaType(SurfaceFormat format) {
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switch (format) {
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case SurfaceFormat::B8G8R8X8:
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case SurfaceFormat::R5G6B5_UINT16:
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return kOpaque_SkAlphaType;
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default:
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return kPremul_SkAlphaType;
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}
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}
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static inline SkImageInfo MakeSkiaImageInfo(const IntSize& aSize,
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SurfaceFormat aFormat) {
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return SkImageInfo::Make(aSize.width, aSize.height,
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GfxFormatToSkiaColorType(aFormat),
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GfxFormatToSkiaAlphaType(aFormat));
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}
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static inline void GfxMatrixToSkiaMatrix(const Matrix& mat, SkMatrix& retval) {
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retval.setAll(SkFloatToScalar(mat._11), SkFloatToScalar(mat._21),
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SkFloatToScalar(mat._31), SkFloatToScalar(mat._12),
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SkFloatToScalar(mat._22), SkFloatToScalar(mat._32), 0, 0,
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SK_Scalar1);
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}
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static inline void GfxMatrixToSkiaMatrix(const Matrix4x4& aMatrix,
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SkMatrix& aResult) {
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aResult.setAll(SkFloatToScalar(aMatrix._11), SkFloatToScalar(aMatrix._21),
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SkFloatToScalar(aMatrix._41), SkFloatToScalar(aMatrix._12),
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SkFloatToScalar(aMatrix._22), SkFloatToScalar(aMatrix._42),
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SkFloatToScalar(aMatrix._14), SkFloatToScalar(aMatrix._24),
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SkFloatToScalar(aMatrix._44));
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}
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static inline SkPaint::Cap CapStyleToSkiaCap(CapStyle aCap) {
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switch (aCap) {
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case CapStyle::BUTT:
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return SkPaint::kButt_Cap;
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case CapStyle::ROUND:
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return SkPaint::kRound_Cap;
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case CapStyle::SQUARE:
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return SkPaint::kSquare_Cap;
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}
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return SkPaint::kDefault_Cap;
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}
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static inline SkPaint::Join JoinStyleToSkiaJoin(JoinStyle aJoin) {
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switch (aJoin) {
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case JoinStyle::BEVEL:
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return SkPaint::kBevel_Join;
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case JoinStyle::ROUND:
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return SkPaint::kRound_Join;
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case JoinStyle::MITER:
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case JoinStyle::MITER_OR_BEVEL:
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return SkPaint::kMiter_Join;
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}
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return SkPaint::kDefault_Join;
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}
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static inline bool StrokeOptionsToPaint(SkPaint& aPaint,
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const StrokeOptions& aOptions) {
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// Skia renders 0 width strokes with a width of 1 (and in black),
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// so we should just skip the draw call entirely.
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// Skia does not handle non-finite line widths.
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if (!aOptions.mLineWidth || !IsFinite(aOptions.mLineWidth)) {
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return false;
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}
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aPaint.setStrokeWidth(SkFloatToScalar(aOptions.mLineWidth));
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aPaint.setStrokeMiter(SkFloatToScalar(aOptions.mMiterLimit));
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aPaint.setStrokeCap(CapStyleToSkiaCap(aOptions.mLineCap));
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aPaint.setStrokeJoin(JoinStyleToSkiaJoin(aOptions.mLineJoin));
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if (aOptions.mDashLength > 0) {
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// Skia only supports dash arrays that are multiples of 2.
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uint32_t dashCount;
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if (aOptions.mDashLength % 2 == 0) {
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dashCount = aOptions.mDashLength;
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} else {
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dashCount = aOptions.mDashLength * 2;
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}
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std::vector<SkScalar> pattern;
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pattern.resize(dashCount);
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for (uint32_t i = 0; i < dashCount; i++) {
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pattern[i] =
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SkFloatToScalar(aOptions.mDashPattern[i % aOptions.mDashLength]);
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}
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sk_sp<SkPathEffect> dash = SkDashPathEffect::Make(
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&pattern.front(), dashCount, SkFloatToScalar(aOptions.mDashOffset));
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aPaint.setPathEffect(dash);
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}
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aPaint.setStyle(SkPaint::kStroke_Style);
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return true;
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}
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static inline SkBlendMode GfxOpToSkiaOp(CompositionOp op) {
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switch (op) {
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case CompositionOp::OP_OVER:
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return SkBlendMode::kSrcOver;
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case CompositionOp::OP_ADD:
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return SkBlendMode::kPlus;
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case CompositionOp::OP_ATOP:
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return SkBlendMode::kSrcATop;
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case CompositionOp::OP_OUT:
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return SkBlendMode::kSrcOut;
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case CompositionOp::OP_IN:
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return SkBlendMode::kSrcIn;
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case CompositionOp::OP_SOURCE:
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return SkBlendMode::kSrc;
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case CompositionOp::OP_DEST_IN:
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return SkBlendMode::kDstIn;
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case CompositionOp::OP_DEST_OUT:
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return SkBlendMode::kDstOut;
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case CompositionOp::OP_DEST_OVER:
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return SkBlendMode::kDstOver;
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case CompositionOp::OP_DEST_ATOP:
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return SkBlendMode::kDstATop;
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case CompositionOp::OP_XOR:
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return SkBlendMode::kXor;
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case CompositionOp::OP_MULTIPLY:
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return SkBlendMode::kMultiply;
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case CompositionOp::OP_SCREEN:
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return SkBlendMode::kScreen;
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case CompositionOp::OP_OVERLAY:
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return SkBlendMode::kOverlay;
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case CompositionOp::OP_DARKEN:
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return SkBlendMode::kDarken;
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case CompositionOp::OP_LIGHTEN:
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return SkBlendMode::kLighten;
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case CompositionOp::OP_COLOR_DODGE:
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return SkBlendMode::kColorDodge;
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case CompositionOp::OP_COLOR_BURN:
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return SkBlendMode::kColorBurn;
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case CompositionOp::OP_HARD_LIGHT:
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return SkBlendMode::kHardLight;
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case CompositionOp::OP_SOFT_LIGHT:
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return SkBlendMode::kSoftLight;
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case CompositionOp::OP_DIFFERENCE:
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return SkBlendMode::kDifference;
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case CompositionOp::OP_EXCLUSION:
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return SkBlendMode::kExclusion;
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case CompositionOp::OP_HUE:
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return SkBlendMode::kHue;
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case CompositionOp::OP_SATURATION:
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return SkBlendMode::kSaturation;
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case CompositionOp::OP_COLOR:
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return SkBlendMode::kColor;
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case CompositionOp::OP_LUMINOSITY:
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return SkBlendMode::kLuminosity;
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default:
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return SkBlendMode::kSrcOver;
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}
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}
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/* There's quite a bit of inconsistency about
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* whether float colors should be rounded with .5f.
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* We choose to do it to match cairo which also
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* happens to match the Direct3D specs */
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static inline U8CPU ColorFloatToByte(Float color) {
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// XXX: do a better job converting to int
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return U8CPU(color * 255.f + .5f);
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};
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static inline SkColor ColorToSkColor(const DeviceColor& color, Float aAlpha) {
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return SkColorSetARGB(ColorFloatToByte(color.a * aAlpha),
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ColorFloatToByte(color.r), ColorFloatToByte(color.g),
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ColorFloatToByte(color.b));
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}
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static inline SkPoint PointToSkPoint(const Point& aPoint) {
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return SkPoint::Make(SkFloatToScalar(aPoint.x), SkFloatToScalar(aPoint.y));
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}
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static inline SkRect RectToSkRect(const Rect& aRect) {
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return SkRect::MakeXYWH(
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SkFloatToScalar(aRect.X()), SkFloatToScalar(aRect.Y()),
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SkFloatToScalar(aRect.Width()), SkFloatToScalar(aRect.Height()));
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}
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static inline SkRect IntRectToSkRect(const IntRect& aRect) {
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return SkRect::MakeXYWH(SkIntToScalar(aRect.X()), SkIntToScalar(aRect.Y()),
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SkIntToScalar(aRect.Width()),
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SkIntToScalar(aRect.Height()));
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}
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static inline SkIRect RectToSkIRect(const Rect& aRect) {
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return SkIRect::MakeXYWH(int32_t(aRect.X()), int32_t(aRect.Y()),
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int32_t(aRect.Width()), int32_t(aRect.Height()));
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}
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static inline SkIRect IntRectToSkIRect(const IntRect& aRect) {
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return SkIRect::MakeXYWH(aRect.X(), aRect.Y(), aRect.Width(), aRect.Height());
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}
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static inline IntRect SkIRectToIntRect(const SkIRect& aRect) {
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return IntRect(aRect.x(), aRect.y(), aRect.width(), aRect.height());
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}
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static inline Point SkPointToPoint(const SkPoint& aPoint) {
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return Point(SkScalarToFloat(aPoint.x()), SkScalarToFloat(aPoint.y()));
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}
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static inline Rect SkRectToRect(const SkRect& aRect) {
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return Rect(SkScalarToFloat(aRect.x()), SkScalarToFloat(aRect.y()),
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SkScalarToFloat(aRect.width()), SkScalarToFloat(aRect.height()));
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}
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static inline SkTileMode ExtendModeToTileMode(ExtendMode aMode, Axis aAxis) {
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switch (aMode) {
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case ExtendMode::CLAMP:
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return SkTileMode::kClamp;
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case ExtendMode::REPEAT:
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return SkTileMode::kRepeat;
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case ExtendMode::REFLECT:
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return SkTileMode::kMirror;
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case ExtendMode::REPEAT_X: {
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return aAxis == Axis::X_AXIS ? SkTileMode::kRepeat : SkTileMode::kClamp;
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}
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case ExtendMode::REPEAT_Y: {
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return aAxis == Axis::Y_AXIS ? SkTileMode::kRepeat : SkTileMode::kClamp;
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}
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}
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return SkTileMode::kClamp;
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}
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static inline SkFontHinting GfxHintingToSkiaHinting(FontHinting aHinting) {
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switch (aHinting) {
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case FontHinting::NONE:
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return SkFontHinting::kNone;
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case FontHinting::LIGHT:
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return SkFontHinting::kSlight;
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case FontHinting::NORMAL:
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return SkFontHinting::kNormal;
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case FontHinting::FULL:
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return SkFontHinting::kFull;
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}
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return SkFontHinting::kNormal;
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}
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static inline FillRule GetFillRule(SkPath::FillType aFillType) {
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switch (aFillType) {
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case SkPath::kWinding_FillType:
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return FillRule::FILL_WINDING;
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case SkPath::kEvenOdd_FillType:
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return FillRule::FILL_EVEN_ODD;
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case SkPath::kInverseWinding_FillType:
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case SkPath::kInverseEvenOdd_FillType:
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default:
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NS_WARNING("Unsupported fill type\n");
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break;
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}
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return FillRule::FILL_EVEN_ODD;
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}
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/**
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* Returns true if the canvas is backed by pixels. Returns false if the canvas
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* wraps an SkPDFDocument, for example.
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*
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* Note: It is not clear whether the test used to implement this function may
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* result in it returning false in some circumstances even when the canvas
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* _is_ pixel backed. In other words maybe it is possible for such a canvas to
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* have kUnknown_SkPixelGeometry?
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*/
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static inline bool IsBackedByPixels(const SkCanvas* aCanvas) {
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SkSurfaceProps props(0, kUnknown_SkPixelGeometry);
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if (!aCanvas->getProps(&props) ||
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props.pixelGeometry() == kUnknown_SkPixelGeometry) {
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return false;
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}
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return true;
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}
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} // namespace gfx
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} // namespace mozilla
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#endif /* MOZILLA_GFX_HELPERSSKIA_H_ */
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