void onDraw(SkCanvas* canvas) override {
void (*drawProc[])(SkCanvas*, const SkRect&, sk_sp<SkImageFilter>) = {
draw_bitmap, draw_path, draw_paint, draw_text
};
sk_sp<SkColorFilter> cf(SkColorFilter::MakeModeFilter(SK_ColorBLUE,
SkXfermode::kSrcIn_Mode));
SkImageFilter::CropRect cropRect(SkRect::Make(SkIRect::MakeXYWH(10, 10, 44, 44)),
SkImageFilter::CropRect::kHasAll_CropEdge);
SkImageFilter::CropRect bogusRect(SkRect::Make(SkIRect::MakeXYWH(-100, -100, 10, 10)),
SkImageFilter::CropRect::kHasAll_CropEdge);
sk_sp<SkImageFilter> offset(SkOffsetImageFilter::Make(SkIntToScalar(-10),
SkIntToScalar(-10),
nullptr));
sk_sp<SkImageFilter> cfOffset(SkColorFilterImageFilter::Make(cf, std::move(offset)));
sk_sp<SkImageFilter> erodeX(SkErodeImageFilter::Make(8, 0, nullptr, &cropRect));
sk_sp<SkImageFilter> erodeY(SkErodeImageFilter::Make(0, 8, nullptr, &cropRect));
sk_sp<SkImageFilter> filters[] = {
nullptr,
SkColorFilterImageFilter::Make(cf, nullptr, &cropRect),
SkBlurImageFilter::Make(0.0f, 0.0f, nullptr, &cropRect),
SkBlurImageFilter::Make(1.0f, 1.0f, nullptr, &cropRect),
SkBlurImageFilter::Make(8.0f, 0.0f, nullptr, &cropRect),
SkBlurImageFilter::Make(0.0f, 8.0f, nullptr, &cropRect),
SkBlurImageFilter::Make(8.0f, 8.0f, nullptr, &cropRect),
SkErodeImageFilter::Make(1, 1, nullptr, &cropRect),
SkErodeImageFilter::Make(8, 0, std::move(erodeY), &cropRect),
SkErodeImageFilter::Make(0, 8, std::move(erodeX), &cropRect),
SkErodeImageFilter::Make(8, 8, nullptr, &cropRect),
SkMergeImageFilter::Make(nullptr,
std::move(cfOffset),
SkXfermode::kSrcOver_Mode,
&cropRect),
SkBlurImageFilter::Make(8.0f, 8.0f, nullptr, &bogusRect),
SkColorFilterImageFilter::Make(cf, nullptr, &bogusRect),
};
SkRect r = SkRect::MakeWH(SkIntToScalar(64), SkIntToScalar(64));
SkScalar MARGIN = SkIntToScalar(16);
SkScalar DX = r.width() + MARGIN;
SkScalar DY = r.height() + MARGIN;
canvas->translate(MARGIN, MARGIN);
for (size_t j = 0; j < SK_ARRAY_COUNT(drawProc); ++j) {
canvas->save();
for (size_t i = 0; i < SK_ARRAY_COUNT(filters); ++i) {
SkPaint paint;
canvas->drawBitmap(fCheckerboard, 0, 0);
drawProc[j](canvas, r, filters[i]);
canvas->translate(0, DY);
}
canvas->restore();
canvas->translate(DX, 0);
}
}
bool SkErodeImageFilter::onFilterImage(Proxy* proxy,
const SkBitmap& source, const SkMatrix& ctm,
SkBitmap* dst, SkIPoint* offset) {
SkBitmap src = this->getInputResult(proxy, source, ctm, offset);
if (src.config() != SkBitmap::kARGB_8888_Config) {
return false;
}
SkAutoLockPixels alp(src);
if (!src.getPixels()) {
return false;
}
dst->setConfig(src.config(), src.width(), src.height());
dst->allocPixels();
int width = radius().width();
int height = radius().height();
if (width < 0 || height < 0) {
return false;
}
if (width == 0 && height == 0) {
src.copyTo(dst, dst->config());
return true;
}
SkBitmap temp;
temp.setConfig(dst->config(), dst->width(), dst->height());
if (!temp.allocPixels()) {
return false;
}
if (width > 0 && height > 0) {
erodeX(src, &temp, width);
erodeY(temp, dst, height);
} else if (width > 0) {
erodeX(src, dst, width);
} else if (height > 0) {
erodeY(src, dst, height);
}
return true;
}
virtual void onDraw(SkCanvas* canvas) override {
void (*drawProc[])(SkCanvas*, const SkRect&, SkImageFilter*) = {
draw_sprite, draw_bitmap, draw_path, draw_paint, draw_text
};
SkAutoTUnref<SkColorFilter> cf(
SkColorFilter::CreateModeFilter(SK_ColorBLUE, SkXfermode::kSrcIn_Mode));
SkImageFilter::CropRect cropRect(SkRect::Make(SkIRect::MakeXYWH(10, 10, 44, 44)), SkImageFilter::CropRect::kHasAll_CropEdge);
SkImageFilter::CropRect bogusRect(SkRect::Make(SkIRect::MakeXYWH(-100, -100, 10, 10)), SkImageFilter::CropRect::kHasAll_CropEdge);
SkAutoTUnref<SkImageFilter> offset(SkOffsetImageFilter::Create(
SkIntToScalar(-10), SkIntToScalar(-10)));
SkAutoTUnref<SkImageFilter> cfOffset(SkColorFilterImageFilter::Create(cf.get(), offset.get()));
SkAutoTUnref<SkImageFilter> erodeX(SkErodeImageFilter::Create(8, 0, NULL, &cropRect));
SkAutoTUnref<SkImageFilter> erodeY(SkErodeImageFilter::Create(0, 8, NULL, &cropRect));
SkImageFilter* filters[] = {
NULL,
SkColorFilterImageFilter::Create(cf.get(), NULL, &cropRect),
SkBlurImageFilter::Create(1.0f, 1.0f, NULL, &cropRect),
SkBlurImageFilter::Create(8.0f, 0.0f, NULL, &cropRect),
SkBlurImageFilter::Create(0.0f, 8.0f, NULL, &cropRect),
SkBlurImageFilter::Create(8.0f, 8.0f, NULL, &cropRect),
SkErodeImageFilter::Create(1, 1, NULL, &cropRect),
SkErodeImageFilter::Create(8, 0, erodeY, &cropRect),
SkErodeImageFilter::Create(0, 8, erodeX, &cropRect),
SkErodeImageFilter::Create(8, 8, NULL, &cropRect),
SkMergeImageFilter::Create(NULL, cfOffset.get(), SkXfermode::kSrcOver_Mode, &cropRect),
SkBlurImageFilter::Create(8.0f, 8.0f, NULL, &bogusRect),
SkColorFilterImageFilter::Create(cf.get(), NULL, &bogusRect),
};
SkRect r = SkRect::MakeWH(SkIntToScalar(64), SkIntToScalar(64));
SkScalar MARGIN = SkIntToScalar(16);
SkScalar DX = r.width() + MARGIN;
SkScalar DY = r.height() + MARGIN;
canvas->translate(MARGIN, MARGIN);
for (size_t j = 0; j < SK_ARRAY_COUNT(drawProc); ++j) {
canvas->save();
for (size_t i = 0; i < SK_ARRAY_COUNT(filters); ++i) {
SkPaint paint;
canvas->drawBitmap(fCheckerboard, 0, 0);
drawProc[j](canvas, r, filters[i]);
canvas->translate(0, DY);
}
canvas->restore();
canvas->translate(DX, 0);
}
for(size_t j = 0; j < SK_ARRAY_COUNT(filters); ++j) {
SkSafeUnref(filters[j]);
}
}
bool SkErodeImageFilter::onFilterImage(Proxy* proxy,
const SkBitmap& source, const SkMatrix& ctm,
SkBitmap* dst, SkIPoint* offset) {
SkBitmap src = source;
if (getInput(0) && !getInput(0)->filterImage(proxy, source, ctm, &src, offset)) {
return false;
}
if (src.config() != SkBitmap::kARGB_8888_Config) {
return false;
}
SkIRect bounds;
src.getBounds(&bounds);
if (!this->applyCropRect(&bounds, ctm)) {
return false;
}
SkAutoLockPixels alp(src);
if (!src.getPixels()) {
return false;
}
dst->setConfig(src.config(), bounds.width(), bounds.height());
dst->allocPixels();
if (!dst->getPixels()) {
return false;
}
int width = radius().width();
int height = radius().height();
if (width < 0 || height < 0) {
return false;
}
if (width == 0 && height == 0) {
src.extractSubset(dst, bounds);
offset->fX += bounds.left();
offset->fY += bounds.top();
return true;
}
SkBitmap temp;
temp.setConfig(dst->config(), dst->width(), dst->height());
if (!temp.allocPixels()) {
return false;
}
if (width > 0 && height > 0) {
erodeX(src, &temp, width, bounds);
SkIRect tmpBounds = SkIRect::MakeWH(bounds.width(), bounds.height());
erodeY(temp, dst, height, tmpBounds);
} else if (width > 0) {
erodeX(src, dst, width, bounds);
} else if (height > 0) {
erodeY(src, dst, height, bounds);
}
offset->fX += bounds.left();
offset->fY += bounds.top();
return true;
}
