mirror of
https://gitlab.winehq.org/wine/wine-gecko.git
synced 2024-09-13 09:24:08 -07:00
362 lines
11 KiB
C++
362 lines
11 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_HELPERSSKIA_H_
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#define MOZILLA_GFX_HELPERSSKIA_H_
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#include "2D.h"
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#include "skia/SkCanvas.h"
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#include "skia/SkDashPathEffect.h"
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#include "skia/SkShader.h"
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#ifdef USE_SKIA_GPU
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#include "skia/GrTypes.h"
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#endif
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#include "mozilla/Assertions.h"
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#include <vector>
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namespace mozilla {
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namespace gfx {
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static inline SkColorType
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GfxFormatToSkiaColorType(SurfaceFormat format)
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{
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switch (format)
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{
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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:
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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
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SkiaColorTypeToGfxFormat(SkColorType type)
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{
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switch (type)
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{
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case kBGRA_8888_SkColorType:
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return SurfaceFormat::B8G8R8A8;
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case kRGB_565_SkColorType:
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return SurfaceFormat::R5G6B5;
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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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#ifdef USE_SKIA_GPU
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static inline GrPixelConfig
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GfxFormatToGrConfig(SurfaceFormat format)
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{
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switch (format)
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{
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case SurfaceFormat::B8G8R8A8:
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return kBGRA_8888_GrPixelConfig;
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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_GrPixelConfig;
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case SurfaceFormat::R5G6B5:
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return kRGB_565_GrPixelConfig;
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case SurfaceFormat::A8:
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return kAlpha_8_GrPixelConfig;
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default:
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return kRGBA_8888_GrPixelConfig;
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}
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}
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#endif
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static inline void
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GfxMatrixToSkiaMatrix(const Matrix& mat, SkMatrix& retval)
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{
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retval.setAll(SkFloatToScalar(mat._11), SkFloatToScalar(mat._21), SkFloatToScalar(mat._31),
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SkFloatToScalar(mat._12), SkFloatToScalar(mat._22), SkFloatToScalar(mat._32),
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0, 0, SK_Scalar1);
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}
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static inline SkPaint::Cap
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CapStyleToSkiaCap(CapStyle aCap)
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{
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switch (aCap)
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{
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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
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JoinStyleToSkiaJoin(JoinStyle aJoin)
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{
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switch (aJoin)
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{
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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
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StrokeOptionsToPaint(SkPaint& aPaint, const StrokeOptions &aOptions)
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{
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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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if (!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] = SkFloatToScalar(aOptions.mDashPattern[i % aOptions.mDashLength]);
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}
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SkDashPathEffect* dash = SkDashPathEffect::Create(&pattern.front(),
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dashCount,
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SkFloatToScalar(aOptions.mDashOffset));
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SkSafeUnref(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 SkXfermode::Mode
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GfxOpToSkiaOp(CompositionOp op)
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{
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switch (op)
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{
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case CompositionOp::OP_OVER:
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return SkXfermode::kSrcOver_Mode;
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case CompositionOp::OP_ADD:
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return SkXfermode::kPlus_Mode;
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case CompositionOp::OP_ATOP:
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return SkXfermode::kSrcATop_Mode;
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case CompositionOp::OP_OUT:
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return SkXfermode::kSrcOut_Mode;
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case CompositionOp::OP_IN:
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return SkXfermode::kSrcIn_Mode;
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case CompositionOp::OP_SOURCE:
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return SkXfermode::kSrc_Mode;
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case CompositionOp::OP_DEST_IN:
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return SkXfermode::kDstIn_Mode;
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case CompositionOp::OP_DEST_OUT:
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return SkXfermode::kDstOut_Mode;
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case CompositionOp::OP_DEST_OVER:
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return SkXfermode::kDstOver_Mode;
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case CompositionOp::OP_DEST_ATOP:
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return SkXfermode::kDstATop_Mode;
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case CompositionOp::OP_XOR:
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return SkXfermode::kXor_Mode;
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case CompositionOp::OP_MULTIPLY:
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return SkXfermode::kMultiply_Mode;
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case CompositionOp::OP_SCREEN:
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return SkXfermode::kScreen_Mode;
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case CompositionOp::OP_OVERLAY:
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return SkXfermode::kOverlay_Mode;
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case CompositionOp::OP_DARKEN:
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return SkXfermode::kDarken_Mode;
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case CompositionOp::OP_LIGHTEN:
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return SkXfermode::kLighten_Mode;
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case CompositionOp::OP_COLOR_DODGE:
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return SkXfermode::kColorDodge_Mode;
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case CompositionOp::OP_COLOR_BURN:
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return SkXfermode::kColorBurn_Mode;
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case CompositionOp::OP_HARD_LIGHT:
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return SkXfermode::kHardLight_Mode;
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case CompositionOp::OP_SOFT_LIGHT:
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return SkXfermode::kSoftLight_Mode;
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case CompositionOp::OP_DIFFERENCE:
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return SkXfermode::kDifference_Mode;
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case CompositionOp::OP_EXCLUSION:
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return SkXfermode::kExclusion_Mode;
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case CompositionOp::OP_HUE:
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return SkXfermode::kHue_Mode;
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case CompositionOp::OP_SATURATION:
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return SkXfermode::kSaturation_Mode;
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case CompositionOp::OP_COLOR:
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return SkXfermode::kColor_Mode;
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case CompositionOp::OP_LUMINOSITY:
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return SkXfermode::kLuminosity_Mode;
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default:
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return SkXfermode::kSrcOver_Mode;
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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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{
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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 Color &color, Float aAlpha)
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{
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return SkColorSetARGB(ColorFloatToByte(color.a*aAlpha), ColorFloatToByte(color.r),
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ColorFloatToByte(color.g), ColorFloatToByte(color.b));
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}
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static inline SkRect
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RectToSkRect(const Rect& aRect)
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{
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return SkRect::MakeXYWH(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
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IntRectToSkRect(const IntRect& aRect)
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{
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return SkRect::MakeXYWH(SkIntToScalar(aRect.x), SkIntToScalar(aRect.y),
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SkIntToScalar(aRect.width), SkIntToScalar(aRect.height));
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}
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static inline SkIRect
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RectToSkIRect(const Rect& aRect)
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{
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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
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IntRectToSkIRect(const IntRect& aRect)
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{
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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 Point
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SkPointToPoint(const SkPoint &aPoint)
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{
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return Point(SkScalarToFloat(aPoint.x()), SkScalarToFloat(aPoint.y()));
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}
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static inline Rect
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SkRectToRect(const SkRect &aRect)
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{
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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 SkShader::TileMode
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ExtendModeToTileMode(ExtendMode aMode)
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{
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switch (aMode)
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{
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case ExtendMode::CLAMP:
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return SkShader::kClamp_TileMode;
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case ExtendMode::REPEAT:
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return SkShader::kRepeat_TileMode;
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case ExtendMode::REFLECT:
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return SkShader::kMirror_TileMode;
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}
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return SkShader::kClamp_TileMode;
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}
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// The following class was imported from Skia, which is under the
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// following licence:
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//
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// Copyright (c) 2011 Google Inc. All rights reserved.
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//
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// Redistribution and use in source and binary forms, with or without
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// modification, are permitted provided that the following conditions are
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// met:
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//
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// * Redistributions of source code must retain the above copyright
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// notice, this list of conditions and the following disclaimer.
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// * Redistributions in binary form must reproduce the above
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// copyright notice, this list of conditions and the following disclaimer
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// in the documentation and/or other materials provided with the
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// distribution.
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// * Neither the name of Google Inc. nor the names of its
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// contributors may be used to endorse or promote products derived from
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// this software without specific prior written permission.
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//
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// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
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// "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
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// LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
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// A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
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// OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
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// SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
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// LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
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// DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
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// THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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// (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
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// OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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template <typename T> class RefPtrSkia {
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public:
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RefPtrSkia() : fObj(NULL) {}
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explicit RefPtrSkia(T* obj) : fObj(obj) { SkSafeRef(fObj); }
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RefPtrSkia(const RefPtrSkia& o) : fObj(o.fObj) { SkSafeRef(fObj); }
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~RefPtrSkia() { SkSafeUnref(fObj); }
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RefPtrSkia& operator=(const RefPtrSkia& rp) {
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SkRefCnt_SafeAssign(fObj, rp.fObj);
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return *this;
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}
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RefPtrSkia& operator=(T* obj) {
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SkRefCnt_SafeAssign(fObj, obj);
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return *this;
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}
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T* get() const { return fObj; }
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T& operator*() const { return *fObj; }
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T* operator->() const { return fObj; }
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RefPtrSkia& adopt(T* obj) {
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SkSafeUnref(fObj);
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fObj = obj;
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return *this;
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}
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typedef T* RefPtrSkia::*unspecified_bool_type;
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operator unspecified_bool_type() const {
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return fObj ? &RefPtrSkia::fObj : NULL;
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}
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private:
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T* fObj;
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};
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// End of code imported from Skia.
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}
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}
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#endif /* MOZILLA_GFX_HELPERSSKIA_H_ */
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