The Tor Browser / file comparison

comparison: gfx/2d/HelpersSkia.h

gfx/2d/HelpersSkia.h

branch
TOR_BUG_9701
changeset 8
97036ab72558
equal deleted inserted replaced
-1:000000000000 0:091c59e6a4d4
1 /* -*- Mode: C++; tab-width: 20; indent-tabs-mode: nil; c-basic-offset: 2 -*-
2 * This Source Code Form is subject to the terms of the Mozilla Public
3 * License, v. 2.0. If a copy of the MPL was not distributed with this
4 * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
5
6 #ifndef MOZILLA_GFX_HELPERSSKIA_H_
7 #define MOZILLA_GFX_HELPERSSKIA_H_
8
9 #include "2D.h"
10 #include "skia/SkCanvas.h"
11 #include "skia/SkDashPathEffect.h"
12 #include "skia/SkShader.h"
13 #ifdef USE_SKIA_GPU
14 #include "skia/GrTypes.h"
15 #endif
16 #include "mozilla/Assertions.h"
17 #include <vector>
18
19 namespace mozilla {
20 namespace gfx {
21
22 static inline SkBitmap::Config
23 GfxFormatToSkiaConfig(SurfaceFormat format)
24 {
25 switch (format)
26 {
27 case SurfaceFormat::B8G8R8A8:
28 return SkBitmap::kARGB_8888_Config;
29 case SurfaceFormat::B8G8R8X8:
30 // We probably need to do something here.
31 return SkBitmap::kARGB_8888_Config;
32 case SurfaceFormat::R5G6B5:
33 return SkBitmap::kRGB_565_Config;
34 case SurfaceFormat::A8:
35 return SkBitmap::kA8_Config;
36 default:
37 return SkBitmap::kARGB_8888_Config;
38 }
39 }
40
41 static inline SkColorType
42 GfxFormatToSkiaColorType(SurfaceFormat format)
43 {
44 switch (format)
45 {
46 case SurfaceFormat::B8G8R8A8:
47 return kBGRA_8888_SkColorType;
48 case SurfaceFormat::B8G8R8X8:
49 // We probably need to do something here.
50 return kBGRA_8888_SkColorType;
51 case SurfaceFormat::R5G6B5:
52 return kRGB_565_SkColorType;
53 case SurfaceFormat::A8:
54 return kAlpha_8_SkColorType;
55 default:
56 return kRGBA_8888_SkColorType;
57 }
58 }
59
60 static inline SurfaceFormat
61 SkiaConfigToGfxFormat(SkBitmap::Config config)
62 {
63 switch (config)
64 {
65 case SkBitmap::kARGB_8888_Config:
66 return SurfaceFormat::B8G8R8A8;
67 case SkBitmap::kRGB_565_Config:
68 return SurfaceFormat::R5G6B5;
69 case SkBitmap::kA8_Config:
70 return SurfaceFormat::A8;
71 default:
72 return SurfaceFormat::B8G8R8A8;
73 }
74 }
75
76 #ifdef USE_SKIA_GPU
77 static inline GrPixelConfig
78 GfxFormatToGrConfig(SurfaceFormat format)
79 {
80 switch (format)
81 {
82 case SurfaceFormat::B8G8R8A8:
83 return kBGRA_8888_GrPixelConfig;
84 case SurfaceFormat::B8G8R8X8:
85 // We probably need to do something here.
86 return kBGRA_8888_GrPixelConfig;
87 case SurfaceFormat::R5G6B5:
88 return kRGB_565_GrPixelConfig;
89 case SurfaceFormat::A8:
90 return kAlpha_8_GrPixelConfig;
91 default:
92 return kRGBA_8888_GrPixelConfig;
93 }
94
95 }
96 #endif
97 static inline void
98 GfxMatrixToSkiaMatrix(const Matrix& mat, SkMatrix& retval)
99 {
100 retval.setAll(SkFloatToScalar(mat._11), SkFloatToScalar(mat._21), SkFloatToScalar(mat._31),
101 SkFloatToScalar(mat._12), SkFloatToScalar(mat._22), SkFloatToScalar(mat._32),
102 0, 0, SK_Scalar1);
103 }
104
105 static inline SkPaint::Cap
106 CapStyleToSkiaCap(CapStyle aCap)
107 {
108 switch (aCap)
109 {
110 case CapStyle::BUTT:
111 return SkPaint::kButt_Cap;
112 case CapStyle::ROUND:
113 return SkPaint::kRound_Cap;
114 case CapStyle::SQUARE:
115 return SkPaint::kSquare_Cap;
116 }
117 return SkPaint::kDefault_Cap;
118 }
119
120 static inline SkPaint::Join
121 JoinStyleToSkiaJoin(JoinStyle aJoin)
122 {
123 switch (aJoin)
124 {
125 case JoinStyle::BEVEL:
126 return SkPaint::kBevel_Join;
127 case JoinStyle::ROUND:
128 return SkPaint::kRound_Join;
129 case JoinStyle::MITER:
130 case JoinStyle::MITER_OR_BEVEL:
131 return SkPaint::kMiter_Join;
132 }
133 return SkPaint::kDefault_Join;
134 }
135
136 static inline bool
137 StrokeOptionsToPaint(SkPaint& aPaint, const StrokeOptions &aOptions)
138 {
139 // Skia renders 0 width strokes with a width of 1 (and in black),
140 // so we should just skip the draw call entirely.
141 if (!aOptions.mLineWidth) {
142 return false;
143 }
144 aPaint.setStrokeWidth(SkFloatToScalar(aOptions.mLineWidth));
145 aPaint.setStrokeMiter(SkFloatToScalar(aOptions.mMiterLimit));
146 aPaint.setStrokeCap(CapStyleToSkiaCap(aOptions.mLineCap));
147 aPaint.setStrokeJoin(JoinStyleToSkiaJoin(aOptions.mLineJoin));
148
149 if (aOptions.mDashLength > 0) {
150 // Skia only supports dash arrays that are multiples of 2.
151 uint32_t dashCount;
152
153 if (aOptions.mDashLength % 2 == 0) {
154 dashCount = aOptions.mDashLength;
155 } else {
156 dashCount = aOptions.mDashLength * 2;
157 }
158
159 std::vector<SkScalar> pattern;
160 pattern.resize(dashCount);
161
162 for (uint32_t i = 0; i < dashCount; i++) {
163 pattern[i] = SkFloatToScalar(aOptions.mDashPattern[i % aOptions.mDashLength]);
164 }
165
166 SkDashPathEffect* dash = SkDashPathEffect::Create(&pattern.front(),
167 dashCount,
168 SkFloatToScalar(aOptions.mDashOffset));
169 SkSafeUnref(aPaint.setPathEffect(dash));
170 }
171
172 aPaint.setStyle(SkPaint::kStroke_Style);
173 return true;
174 }
175
176 static inline SkXfermode::Mode
177 GfxOpToSkiaOp(CompositionOp op)
178 {
179 switch (op)
180 {
181 case CompositionOp::OP_OVER:
182 return SkXfermode::kSrcOver_Mode;
183 case CompositionOp::OP_ADD:
184 return SkXfermode::kPlus_Mode;
185 case CompositionOp::OP_ATOP:
186 return SkXfermode::kSrcATop_Mode;
187 case CompositionOp::OP_OUT:
188 return SkXfermode::kSrcOut_Mode;
189 case CompositionOp::OP_IN:
190 return SkXfermode::kSrcIn_Mode;
191 case CompositionOp::OP_SOURCE:
192 return SkXfermode::kSrc_Mode;
193 case CompositionOp::OP_DEST_IN:
194 return SkXfermode::kDstIn_Mode;
195 case CompositionOp::OP_DEST_OUT:
196 return SkXfermode::kDstOut_Mode;
197 case CompositionOp::OP_DEST_OVER:
198 return SkXfermode::kDstOver_Mode;
199 case CompositionOp::OP_DEST_ATOP:
200 return SkXfermode::kDstATop_Mode;
201 case CompositionOp::OP_XOR:
202 return SkXfermode::kXor_Mode;
203 case CompositionOp::OP_MULTIPLY:
204 return SkXfermode::kMultiply_Mode;
205 case CompositionOp::OP_SCREEN:
206 return SkXfermode::kScreen_Mode;
207 case CompositionOp::OP_OVERLAY:
208 return SkXfermode::kOverlay_Mode;
209 case CompositionOp::OP_DARKEN:
210 return SkXfermode::kDarken_Mode;
211 case CompositionOp::OP_LIGHTEN:
212 return SkXfermode::kLighten_Mode;
213 case CompositionOp::OP_COLOR_DODGE:
214 return SkXfermode::kColorDodge_Mode;
215 case CompositionOp::OP_COLOR_BURN:
216 return SkXfermode::kColorBurn_Mode;
217 case CompositionOp::OP_HARD_LIGHT:
218 return SkXfermode::kHardLight_Mode;
219 case CompositionOp::OP_SOFT_LIGHT:
220 return SkXfermode::kSoftLight_Mode;
221 case CompositionOp::OP_DIFFERENCE:
222 return SkXfermode::kDifference_Mode;
223 case CompositionOp::OP_EXCLUSION:
224 return SkXfermode::kExclusion_Mode;
225 case CompositionOp::OP_HUE:
226 return SkXfermode::kHue_Mode;
227 case CompositionOp::OP_SATURATION:
228 return SkXfermode::kSaturation_Mode;
229 case CompositionOp::OP_COLOR:
230 return SkXfermode::kColor_Mode;
231 case CompositionOp::OP_LUMINOSITY:
232 return SkXfermode::kLuminosity_Mode;
233 default:
234 return SkXfermode::kSrcOver_Mode;
235 }
236 }
237
238 static inline SkColor ColorToSkColor(const Color &color, Float aAlpha)
239 {
240 //XXX: do a better job converting to int
241 return SkColorSetARGB(U8CPU(color.a*aAlpha*255.0), U8CPU(color.r*255.0),
242 U8CPU(color.g*255.0), U8CPU(color.b*255.0));
243 }
244
245 static inline SkRect
246 RectToSkRect(const Rect& aRect)
247 {
248 return SkRect::MakeXYWH(SkFloatToScalar(aRect.x), SkFloatToScalar(aRect.y),
249 SkFloatToScalar(aRect.width), SkFloatToScalar(aRect.height));
250 }
251
252 static inline SkRect
253 IntRectToSkRect(const IntRect& aRect)
254 {
255 return SkRect::MakeXYWH(SkIntToScalar(aRect.x), SkIntToScalar(aRect.y),
256 SkIntToScalar(aRect.width), SkIntToScalar(aRect.height));
257 }
258
259 static inline SkIRect
260 RectToSkIRect(const Rect& aRect)
261 {
262 return SkIRect::MakeXYWH(int32_t(aRect.x), int32_t(aRect.y),
263 int32_t(aRect.width), int32_t(aRect.height));
264 }
265
266 static inline SkIRect
267 IntRectToSkIRect(const IntRect& aRect)
268 {
269 return SkIRect::MakeXYWH(aRect.x, aRect.y, aRect.width, aRect.height);
270 }
271
272 static inline Point
273 SkPointToPoint(const SkPoint &aPoint)
274 {
275 return Point(SkScalarToFloat(aPoint.x()), SkScalarToFloat(aPoint.y()));
276 }
277
278 static inline Rect
279 SkRectToRect(const SkRect &aRect)
280 {
281 return Rect(SkScalarToFloat(aRect.x()), SkScalarToFloat(aRect.y()),
282 SkScalarToFloat(aRect.width()), SkScalarToFloat(aRect.height()));
283 }
284
285 static inline SkShader::TileMode
286 ExtendModeToTileMode(ExtendMode aMode)
287 {
288 switch (aMode)
289 {
290 case ExtendMode::CLAMP:
291 return SkShader::kClamp_TileMode;
292 case ExtendMode::REPEAT:
293 return SkShader::kRepeat_TileMode;
294 case ExtendMode::REFLECT:
295 return SkShader::kMirror_TileMode;
296 }
297 return SkShader::kClamp_TileMode;
298 }
299
300 }
301 }
302
303 #endif /* MOZILLA_GFX_HELPERSSKIA_H_ */

Mercurial Repository: The Tor Browser

Europalab SCM Repository Server

mercurial