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/*
* Copyright 2011 Google Inc.
*
* Use of this source code is governed by a BSD-style license that can be
* found in the LICENSE file.
*/
#ifndef SkBlitMask_DEFINED
#define SkBlitMask_DEFINED
#include "SkBitmap.h"
#include "SkColor.h"
#include "SkMask.h"
class SkBlitMask {
public:
/**
* Returns true if the device config and mask format were supported.
* else return false (nothing was drawn)
*/
static bool BlitColor(const SkBitmap& device, const SkMask& mask,
const SkIRect& clip, SkColor color);
/**
* Function pointer that blits the mask into a device (dst) colorized
* by color. The number of pixels to blit is specified by width and height,
* but each scanline is offset by dstRB (rowbytes) and srcRB respectively.
*/
typedef void (*ColorProc)(void* dst, size_t dstRB,
const void* mask, size_t maskRB,
SkColor color, int width, int height);
/**
* Function pointer that blits a row of mask(lcd16) into a row of dst
* colorized by a single color. The number of pixels to blit is specified
* by width.
*/
typedef void (*BlitLCD16RowProc)(SkPMColor dst[], const uint16_t src[],
SkColor color, int width,
SkPMColor opaqueDst);
/**
* Function pointer that blits a row of src colors through a row of a mask
* onto a row of dst colors. The RowFactory that returns this function ptr
* will have been told the formats for the mask and the dst.
*/
typedef void (*RowProc)(void* dst, const void* mask,
const SkPMColor* src, int width);
/**
* Public entry-point to return a blitmask ColorProc.
* May return NULL if config or format are not supported.
*/
static ColorProc ColorFactory(SkColorType, SkMask::Format, SkColor);
/**
* Return either platform specific optimized blitmask ColorProc,
* or NULL if no optimized routine is available.
*/
static ColorProc PlatformColorProcs(SkColorType, SkMask::Format, SkColor);
/**
* Public entry-point to return a blitcolor BlitLCD16RowProc.
*/
static BlitLCD16RowProc BlitLCD16RowFactory(bool isOpaque);
/**
* Return either platform specific optimized blitcolor BlitLCD16RowProc,
* or NULL if no optimized routine is available.
*/
static BlitLCD16RowProc PlatformBlitRowProcs16(bool isOpaque);
enum RowFlags {
kSrcIsOpaque_RowFlag = 1 << 0
};
/**
* Public entry-point to return a blitmask RowProc.
* May return NULL if config or format are not supported.
*/
static RowProc RowFactory(SkColorType, SkMask::Format, RowFlags);
/**
* Return either platform specific optimized blitmask RowProc,
* or NULL if no optimized routine is available.
*/
static RowProc PlatformRowProcs(SkColorType, SkMask::Format, RowFlags);
};
#endif
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