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1 /* | 1 /* |
2 * Copyright 2006 The Android Open Source Project | 2 * Copyright 2006 The Android Open Source Project |
3 * | 3 * |
4 * Use of this source code is governed by a BSD-style license that can be | 4 * Use of this source code is governed by a BSD-style license that can be |
5 * found in the LICENSE file. | 5 * found in the LICENSE file. |
6 */ | 6 */ |
7 | 7 |
8 #ifndef SkCanvas_DEFINED | 8 #ifndef SkCanvas_DEFINED |
9 #define SkCanvas_DEFINED | 9 #define SkCanvas_DEFINED |
10 | 10 |
11 #include "SkTypes.h" | 11 #include "SkTypes.h" |
12 #include "SkBitmap.h" | 12 #include "SkBitmap.h" |
13 #include "SkDeque.h" | 13 #include "SkDeque.h" |
14 #include "SkClipStack.h" | 14 #include "SkClipStack.h" |
15 #include "SkPaint.h" | 15 #include "SkPaint.h" |
16 #include "SkRefCnt.h" | 16 #include "SkRefCnt.h" |
17 #include "SkPath.h" | 17 #include "SkPath.h" |
18 #include "SkRegion.h" | 18 #include "SkRegion.h" |
19 #include "SkXfermode.h" | 19 #include "SkXfermode.h" |
20 | 20 |
21 //#define SK_SUPPORT_LEGACY_READPIXELSCONFIG | 21 //#define SK_SUPPORT_LEGACY_READPIXELSCONFIG |
22 | 22 |
| 23 #ifdef SK_SUPPORT_LEGACY_READPIXELSCONFIG |
| 24 #ifndef SK_SUPPORT_LEGACY_CONFIG8888 |
| 25 #define SK_SUPPORT_LEGACY_CONFIG8888 |
| 26 #endif |
| 27 #endif |
| 28 |
23 // if not defined, we always assume ClipToLayer for saveLayer() | 29 // if not defined, we always assume ClipToLayer for saveLayer() |
24 //#define SK_SUPPORT_LEGACY_CLIPTOLAYERFLAG | 30 //#define SK_SUPPORT_LEGACY_CLIPTOLAYERFLAG |
25 | 31 |
26 | 32 |
27 //#define SK_SUPPORT_LEGACY_GETCLIPTYPE | 33 //#define SK_SUPPORT_LEGACY_GETCLIPTYPE |
28 //#define SK_SUPPORT_LEGACY_GETTOTALCLIP | 34 //#define SK_SUPPORT_LEGACY_GETTOTALCLIP |
29 //#define SK_SUPPORT_LEGACY_GETTOPDEVICE | 35 //#define SK_SUPPORT_LEGACY_GETTOPDEVICE |
30 | 36 |
31 class SkBounder; | 37 class SkBounder; |
32 class SkBaseDevice; | 38 class SkBaseDevice; |
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224 * return the ImageInfo and rowBytes. The returned address is only valid | 230 * return the ImageInfo and rowBytes. The returned address is only valid |
225 * while the canvas object is in scope and unchanged. Any API calls made on | 231 * while the canvas object is in scope and unchanged. Any API calls made on |
226 * canvas (or its parent surface if any) will invalidate the | 232 * canvas (or its parent surface if any) will invalidate the |
227 * returned address (and associated information). | 233 * returned address (and associated information). |
228 * | 234 * |
229 * On failure, returns NULL and the info and rowBytes parameters are | 235 * On failure, returns NULL and the info and rowBytes parameters are |
230 * ignored. | 236 * ignored. |
231 */ | 237 */ |
232 const void* peekPixels(SkImageInfo* info, size_t* rowBytes); | 238 const void* peekPixels(SkImageInfo* info, size_t* rowBytes); |
233 | 239 |
| 240 #ifdef SK_SUPPORT_LEGACY_CONFIG8888 |
234 /** | 241 /** |
235 * This enum can be used with read/writePixels to perform a pixel ops to or | 242 * This enum can be used with read/writePixels to perform a pixel ops to or |
236 * from an 8888 config other than Skia's native config (SkPMColor). There | 243 * from an 8888 config other than Skia's native config (SkPMColor). There |
237 * are three byte orders supported: native, BGRA, and RGBA. Each has a | 244 * are three byte orders supported: native, BGRA, and RGBA. Each has a |
238 * premultiplied and unpremultiplied variant. | 245 * premultiplied and unpremultiplied variant. |
239 * | 246 * |
240 * Components of a 8888 pixel can be packed/unpacked from a 32bit word using | 247 * Components of a 8888 pixel can be packed/unpacked from a 32bit word using |
241 * either byte offsets or shift values. Byte offsets are endian-invariant | 248 * either byte offsets or shift values. Byte offsets are endian-invariant |
242 * while shifts are not. BGRA and RGBA configs are defined by byte | 249 * while shifts are not. BGRA and RGBA configs are defined by byte |
243 * orderings. The native config is defined by shift values (SK_A32_SHIFT, | 250 * orderings. The native config is defined by shift values (SK_A32_SHIFT, |
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258 * low byte to high byte: B, G, R, A. | 265 * low byte to high byte: B, G, R, A. |
259 */ | 266 */ |
260 kBGRA_Premul_Config8888, | 267 kBGRA_Premul_Config8888, |
261 kBGRA_Unpremul_Config8888, | 268 kBGRA_Unpremul_Config8888, |
262 /** | 269 /** |
263 * low byte to high byte: R, G, B, A. | 270 * low byte to high byte: R, G, B, A. |
264 */ | 271 */ |
265 kRGBA_Premul_Config8888, | 272 kRGBA_Premul_Config8888, |
266 kRGBA_Unpremul_Config8888 | 273 kRGBA_Unpremul_Config8888 |
267 }; | 274 }; |
| 275 #endif |
268 | 276 |
269 #ifdef SK_SUPPORT_LEGACY_READPIXELSCONFIG | 277 #ifdef SK_SUPPORT_LEGACY_READPIXELSCONFIG |
270 /** | 278 /** |
271 * On success (returns true), copy the canvas pixels into the bitmap. | 279 * On success (returns true), copy the canvas pixels into the bitmap. |
272 * On failure, the bitmap parameter is left unchanged and false is | 280 * On failure, the bitmap parameter is left unchanged and false is |
273 * returned. | 281 * returned. |
274 * | 282 * |
275 * The canvas' pixels are converted to the bitmap's config. The only | 283 * The canvas' pixels are converted to the bitmap's config. The only |
276 * supported config is kARGB_8888_Config, though this is likely to be | 284 * supported config is kARGB_8888_Config, though this is likely to be |
277 * relaxed in the future. The meaning of config kARGB_8888_Config is | 285 * relaxed in the future. The meaning of config kARGB_8888_Config is |
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1494 bool asROBitmap(SkBitmap*) const; | 1502 bool asROBitmap(SkBitmap*) const; |
1495 | 1503 |
1496 private: | 1504 private: |
1497 SkBitmap fBitmap; // used if peekPixels() fails | 1505 SkBitmap fBitmap; // used if peekPixels() fails |
1498 const void* fAddr; // NULL on failure | 1506 const void* fAddr; // NULL on failure |
1499 SkImageInfo fInfo; | 1507 SkImageInfo fInfo; |
1500 size_t fRowBytes; | 1508 size_t fRowBytes; |
1501 }; | 1509 }; |
1502 | 1510 |
1503 #endif | 1511 #endif |
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