mirror of
https://gitlab.winehq.org/wine/wine-gecko.git
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134 lines
3.5 KiB
C++
134 lines
3.5 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 "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 SkBitmap::Config
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GfxFormatToSkiaConfig(SurfaceFormat format)
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{
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switch (format)
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{
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case FORMAT_B8G8R8A8:
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return SkBitmap::kARGB_8888_Config;
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case FORMAT_B8G8R8X8:
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// We probably need to do something here.
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return SkBitmap::kARGB_8888_Config;
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case FORMAT_R5G6B5:
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return SkBitmap::kRGB_565_Config;
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case FORMAT_A8:
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return SkBitmap::kA8_Config;
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}
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return SkBitmap::kARGB_8888_Config;
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}
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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 CAP_BUTT:
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return SkPaint::kButt_Cap;
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case CAP_ROUND:
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return SkPaint::kRound_Cap;
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case CAP_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 JOIN_BEVEL:
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return SkPaint::kBevel_Join;
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case JOIN_ROUND:
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return SkPaint::kRound_Join;
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case JOIN_MITER:
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case JOIN_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 = new SkDashPathEffect(&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 void
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ConvertBGRXToBGRA(unsigned char* aData, const IntSize &aSize, int32_t aStride)
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{
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uint32_t* pixel = reinterpret_cast<uint32_t*>(aData);
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for (int row = 0; row < aSize.height; ++row) {
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for (int column = 0; column < aSize.width; ++column) {
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pixel[column] |= 0xFF000000;
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}
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pixel += (aStride/4);
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}
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}
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}
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}
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#endif /* MOZILLA_GFX_HELPERSSKIA_H_ */
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