本文整理汇总了C++中SkBitmap::getSafeSize方法的典型用法代码示例。如果您正苦于以下问题：C++ SkBitmap::getSafeSize方法的具体用法？C++ SkBitmap::getSafeSize怎么用？C++ SkBitmap::getSafeSize使用的例子？那么, 这里精选的方法代码示例或许可以为您提供帮助。您也可以进一步了解该方法所在类SkBitmap的用法示例。
在下文中一共展示了SkBitmap::getSafeSize方法的3个代码示例，这些例子默认根据受欢迎程度排序。您可以为喜欢或者感觉有用的代码点赞，您的评价将有助于系统推荐出更棒的C++代码示例。
示例1: onCopyOnWrite
void SkSurface_Raster::onCopyOnWrite(ContentChangeMode mode) {
// are we sharing pixelrefs with the image?
sk_sp<SkImage> cached(this->refCachedImage(SkBudgeted::kNo, kNo_ForceUnique));
SkASSERT(cached);
if (SkBitmapImageGetPixelRef(cached.get()) == fBitmap.pixelRef()) {
SkASSERT(fWeOwnThePixels);
if (kDiscard_ContentChangeMode == mode) {
fBitmap.allocPixels();
} else {
SkBitmap prev(fBitmap);
fBitmap.allocPixels();
prev.lockPixels();
SkASSERT(prev.info() == fBitmap.info());
SkASSERT(prev.rowBytes() == fBitmap.rowBytes());
memcpy(fBitmap.getPixels(), prev.getPixels(), fBitmap.getSafeSize());
}
SkASSERT(fBitmap.rowBytes() == fRowBytes); // be sure we always use the same value
// Now fBitmap is a deep copy of itself (and therefore different from
// what is being used by the image. Next we update the canvas to use
// this as its backend, so we can't modify the image's pixels anymore.
SkASSERT(this->getCachedCanvas());
this->getCachedCanvas()->getDevice()->replaceBitmapBackendForRasterSurface(fBitmap);
}
}示例2: generateMask
static void generateMask(const SkMask& mask, const SkPath& path) {
SkBitmap::Config config;
SkPaint paint;
int srcW = mask.fBounds.width();
int srcH = mask.fBounds.height();
int dstW = srcW;
int dstH = srcH;
int dstRB = mask.fRowBytes;
SkMatrix matrix;
matrix.setTranslate(-SkIntToScalar(mask.fBounds.fLeft),
-SkIntToScalar(mask.fBounds.fTop));
if (SkMask::kBW_Format == mask.fFormat) {
config = SkBitmap::kA1_Config;
paint.setAntiAlias(false);
} else {
config = SkBitmap::kA8_Config;
paint.setAntiAlias(true);
switch (mask.fFormat) {
case SkMask::kA8_Format:
break;
case SkMask::kLCD16_Format:
case SkMask::kLCD32_Format:
// TODO: trigger off LCD orientation
dstW *= 3;
matrix.postScale(SkIntToScalar(3), SK_Scalar1);
dstRB = 0; // signals we need a copy
break;
default:
SkDEBUGFAIL("unexpected mask format");
}
}
SkRasterClip clip;
clip.setRect(SkIRect::MakeWH(dstW, dstH));
SkBitmap bm;
bm.setConfig(config, dstW, dstH, dstRB);
if (0 == dstRB) {
bm.allocPixels();
bm.lockPixels();
} else {
bm.setPixels(mask.fImage);
}
sk_bzero(bm.getPixels(), bm.getSafeSize());
SkDraw draw;
sk_bzero(&draw, sizeof(draw));
draw.fRC = &clip;
draw.fClip = &clip.bwRgn();
draw.fMatrix = &matrix;
draw.fBitmap = &bm;
draw.drawPath(path, paint);
if (0 == dstRB) {
switch (mask.fFormat) {
case SkMask::kLCD16_Format:
pack3xHToLCD16(bm, mask);
break;
case SkMask::kLCD32_Format:
pack3xHToLCD32(bm, mask);
break;
default:
SkDEBUGFAIL("bad format for copyback");
}
}
}示例3: generateMask
static void generateMask(const SkMask& mask, const SkPath& path,
const SkMaskGamma::PreBlend& maskPreBlend) {
SkBitmap::Config config;
SkPaint paint;
int srcW = mask.fBounds.width();
int srcH = mask.fBounds.height();
int dstW = srcW;
int dstH = srcH;
int dstRB = mask.fRowBytes;
SkMatrix matrix;
matrix.setTranslate(-SkIntToScalar(mask.fBounds.fLeft),
-SkIntToScalar(mask.fBounds.fTop));
if (SkMask::kBW_Format == mask.fFormat) {
config = SkBitmap::kA1_Config;
paint.setAntiAlias(false);
} else {
config = SkBitmap::kA8_Config;
paint.setAntiAlias(true);
switch (mask.fFormat) {
case SkMask::kA8_Format:
break;
case SkMask::kLCD16_Format:
case SkMask::kLCD32_Format:
// TODO: trigger off LCD orientation
dstW *= 3;
matrix.postScale(SkIntToScalar(3), SK_Scalar1);
dstRB = 0; // signals we need a copy
break;
default:
SkDEBUGFAIL("unexpected mask format");
}
}
SkRasterClip clip;
clip.setRect(SkIRect::MakeWH(dstW, dstH));
SkBitmap bm;
bm.setConfig(config, dstW, dstH, dstRB);
if (0 == dstRB) {
if (!bm.allocPixels()) {
// can't allocate offscreen, so empty the mask and return
sk_bzero(mask.fImage, mask.computeImageSize());
return;
}
bm.lockPixels();
} else {
bm.setPixels(mask.fImage);
}
sk_bzero(bm.getPixels(), bm.getSafeSize());
SkDraw draw;
draw.fRC = &clip;
draw.fClip = &clip.bwRgn();
draw.fMatrix = &matrix;
draw.fBitmap = &bm;
draw.drawPath(path, paint);
switch (mask.fFormat) {
case SkMask::kA8_Format:
if (maskPreBlend.isApplicable()) {
applyLUTToA8Mask(mask, maskPreBlend.fG);
}
break;
case SkMask::kLCD16_Format:
if (maskPreBlend.isApplicable()) {
pack3xHToLCD16<true>(bm, mask, maskPreBlend);
} else {
pack3xHToLCD16<false>(bm, mask, maskPreBlend);
}
break;
case SkMask::kLCD32_Format:
if (maskPreBlend.isApplicable()) {
pack3xHToLCD32<true>(bm, mask, maskPreBlend);
} else {
pack3xHToLCD32<false>(bm, mask, maskPreBlend);
}
break;
default:
break;
}
}