gfx/skia/trunk/src/core/SkBlitMask.h@97036ab72558
gfx/skia/trunk/src/core/SkBlitMask.h
Tue, 06 Jan 2015 21:39:09 +0100
- author
- Michael Schloh von Bennewitz <michael@schloh.com>
- date
- Tue, 06 Jan 2015 21:39:09 +0100
- branch
- TOR_BUG_9701
- changeset 8
- 97036ab72558
- permissions
- -rw-r--r--
Conditionally force memory storage according to privacy.thirdparty.isolate;
This solves Tor bug #9701, complying with disk avoidance documented in
https://www.torproject.org/projects/torbrowser/design/#disk-avoidance.
1 /*
2 * Copyright 2011 Google Inc.
3 *
4 * Use of this source code is governed by a BSD-style license that can be
5 * found in the LICENSE file.
6 */
8 #ifndef SkBlitMask_DEFINED
9 #define SkBlitMask_DEFINED
11 #include "SkBitmap.h"
12 #include "SkColor.h"
13 #include "SkMask.h"
15 class SkBlitMask {
16 public:
17 /**
18 * Returns true if the device config and mask format were supported.
19 * else return false (nothing was drawn)
20 */
21 static bool BlitColor(const SkBitmap& device, const SkMask& mask,
22 const SkIRect& clip, SkColor color);
24 /**
25 * Function pointer that blits the mask into a device (dst) colorized
26 * by color. The number of pixels to blit is specified by width and height,
27 * but each scanline is offset by dstRB (rowbytes) and srcRB respectively.
28 */
29 typedef void (*ColorProc)(void* dst, size_t dstRB,
30 const void* mask, size_t maskRB,
31 SkColor color, int width, int height);
33 /**
34 * Function pointer that blits a row of mask(lcd16) into a row of dst
35 * colorized by a single color. The number of pixels to blit is specified
36 * by width.
37 */
38 typedef void (*BlitLCD16RowProc)(SkPMColor dst[], const uint16_t src[],
39 SkColor color, int width,
40 SkPMColor opaqueDst);
42 /**
43 * Function pointer that blits a row of src colors through a row of a mask
44 * onto a row of dst colors. The RowFactory that returns this function ptr
45 * will have been told the formats for the mask and the dst.
46 */
47 typedef void (*RowProc)(void* dst, const void* mask,
48 const SkPMColor* src, int width);
50 /**
51 * Public entry-point to return a blitmask ColorProc.
52 * May return NULL if config or format are not supported.
53 */
54 static ColorProc ColorFactory(SkBitmap::Config, SkMask::Format, SkColor);
56 /**
57 * Return either platform specific optimized blitmask ColorProc,
58 * or NULL if no optimized routine is available.
59 */
60 static ColorProc PlatformColorProcs(SkBitmap::Config, SkMask::Format, SkColor);
62 /**
63 * Public entry-point to return a blitcolor BlitLCD16RowProc.
64 */
65 static BlitLCD16RowProc BlitLCD16RowFactory(bool isOpaque);
67 /**
68 * Return either platform specific optimized blitcolor BlitLCD16RowProc,
69 * or NULL if no optimized routine is available.
70 */
71 static BlitLCD16RowProc PlatformBlitRowProcs16(bool isOpaque);
73 enum RowFlags {
74 kSrcIsOpaque_RowFlag = 1 << 0
75 };
77 /**
78 * Public entry-point to return a blitmask RowProc.
79 * May return NULL if config or format are not supported.
80 */
81 static RowProc RowFactory(SkBitmap::Config, SkMask::Format, RowFlags);
83 /**
84 * Return either platform specific optimized blitmask RowProc,
85 * or NULL if no optimized routine is available.
86 */
87 static RowProc PlatformRowProcs(SkBitmap::Config, SkMask::Format, RowFlags);
88 };
90 #endif
