The Tor Browser: gfx/skia/trunk/src/core/SkBlitMask.h@6474c204b198

Cloned upstream origin tor-browser at tor-browser-31.3.0esr-4.5-1-build1
revision ID fc1c9ff7c1b2defdbc039f12214767608f46423f for hacking purpose.

     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

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