static bool SK_WARN_UNUSED_RESULT flatten(const SkImage& image, Json::Value* target,
bool sendBinaries) {
if (sendBinaries) {
SkData* encoded = image.encode(SkImageEncoder::kPNG_Type, 100);
if (encoded == nullptr) {
// PNG encode doesn't necessarily support all color formats, convert to a different
// format
size_t rowBytes = 4 * image.width();
void* buffer = sk_malloc_throw(rowBytes * image.height());
SkImageInfo dstInfo = SkImageInfo::Make(image.width(), image.height(),
kN32_SkColorType, kPremul_SkAlphaType);
if (!image.readPixels(dstInfo, buffer, rowBytes, 0, 0)) {
SkDebugf("readPixels failed\n");
return false;
}
SkImage* converted = SkImage::NewRasterCopy(dstInfo, buffer, rowBytes);
encoded = converted->encode(SkImageEncoder::kPNG_Type, 100);
if (encoded == nullptr) {
SkDebugf("image encode failed\n");
return false;
}
free(converted);
free(buffer);
}
Json::Value bytes;
encode_data(encoded->data(), encoded->size(), &bytes);
(*target)[SKJSONCANVAS_ATTRIBUTE_BYTES] = bytes;
encoded->unref();
}
else {
SkString description = SkStringPrintf("%dx%d pixel image", image.width(), image.height());
(*target)[SKJSONCANVAS_ATTRIBUTE_DESCRIPTION] = Json::Value(description.c_str());
}
return true;
}
void onDraw(SkCanvas* canvas) override {
canvas->clear(SK_ColorBLACK);
SkPaint paint;
for (int i = 0; i < 4; i++) {
SkImage* image = (i & 0x01) ? fCheckerboard.get() : fBitmap.get();
SkIRect cropRect = SkIRect::MakeXYWH(i * 12,
i * 8,
image->width() - i * 8,
image->height() - i * 12);
SkImageFilter::CropRect rect(SkRect::Make(cropRect));
SkAutoTUnref<SkImageFilter> tileInput(SkImageSource::Create(image));
SkScalar dx = SkIntToScalar(i*5);
SkScalar dy = SkIntToScalar(i*10);
SkAutoTUnref<SkImageFilter> filter(SkOffsetImageFilter::Create(dx, dy, tileInput,
&rect));
paint.setImageFilter(filter);
DrawClippedImage(canvas, image, paint, 1, cropRect);
canvas->translate(SkIntToScalar(image->width() + MARGIN), 0);
}
SkIRect cropRect = SkIRect::MakeXYWH(0, 0, 100, 100);
SkImageFilter::CropRect rect(SkRect::Make(cropRect));
SkAutoTUnref<SkImageFilter> filter(SkOffsetImageFilter::Create(-5, -10, nullptr, &rect));
paint.setImageFilter(filter);
DrawClippedImage(canvas, fBitmap.get(), paint, 2, cropRect);
}
static void drawJpeg(SkCanvas* canvas, const SkISize& size) {
SkAutoDataUnref data(fileToData("/Users/mike/Downloads/skia.google.jpeg"));
SkImage* image = SkImage::NewEncodedData(data);
if (image) {
SkAutoCanvasRestore acr(canvas, true);
canvas->scale(size.width() * 1.0f / image->width(),
size.height() * 1.0f / image->height());
image->draw(canvas,0, 0, NULL);
image->unref();
}
}
static void drawJpeg(SkCanvas* canvas, const SkISize& size) {
// TODO: Make this draw a file that is checked in, so it can
// be exercised on machines other than mike's. Will require a
// rebaseline.
SkAutoDataUnref data(fileToData("/Users/mike/Downloads/skia.google.jpeg"));
SkImage* image = SkImage::NewEncodedData(data);
if (image) {
SkAutoCanvasRestore acr(canvas, true);
canvas->scale(size.width() * 1.0f / image->width(),
size.height() * 1.0f / image->height());
image->draw(canvas,0, 0, NULL);
image->unref();
}
}
static void drawJpeg(SkCanvas* canvas, const SkISize& size) {
// TODO: Make this draw a file that is checked in, so it can
// be exercised on machines other than mike's. Will require a
// rebaseline.
SkAutoDataUnref data(SkData::NewFromFileName("/Users/mike/Downloads/skia.google.jpeg"));
if (NULL == data.get()) {
return;
}
SkImage* image = SkImage::NewFromGenerator(
SkDecodingImageGenerator::Create(data, SkDecodingImageGenerator::Options()));
if (image) {
SkAutoCanvasRestore acr(canvas, true);
canvas->scale(size.width() * 1.0f / image->width(),
size.height() * 1.0f / image->height());
canvas->drawImage(image, 0, 0, NULL);
image->unref();
}
}
void HelloWorldWindow::draw(SkCanvas* canvas) {
drawContents(canvas);
// in case we have queued drawing calls
fContext->flush();
// Invalidate the window to force a redraw. Poor man's animation mechanism.
this->inval(NULL);
if (kRaster_DeviceType == fType) {
// need to send the raster bits to the (gpu) window
SkImage* snap = fSurface->newImageSnapshot();
size_t rowBytes;
SkImageInfo info;
const void* pixels = snap->peekPixels(&info, &rowBytes);
fRenderTarget->writePixels(0, 0, snap->width(), snap->height(),
SkImageInfo2GrPixelConfig(info.colorType(),
info.alphaType(),
info.profileType()),
pixels,
rowBytes,
GrContext::kFlushWrites_PixelOp);
SkSafeUnref(snap);
}
INHERITED::present();
}