void onOnceBeforeDraw() override {
// Build the picture.
SkPictureRecorder recorder;
SkCanvas* pictureCanvas = recorder.beginRecording(fTileSize, fTileSize, NULL, 0);
this->drawTile(pictureCanvas);
fPicture.reset(recorder.endRecording());
// Build a reference bitmap.
fBitmap.allocN32Pixels(SkScalarCeilToInt(fTileSize), SkScalarCeilToInt(fTileSize));
fBitmap.eraseColor(SK_ColorTRANSPARENT);
SkCanvas bitmapCanvas(fBitmap);
this->drawTile(&bitmapCanvas);
}
virtual void onDraw(SkCanvas* canvas) {
canvas->clear(0x00000000);
SkRect srcRect = SkRect::MakeWH(96, 96);
SkSize deviceSize = SkSize::Make(16, 16);
draw(canvas,
srcRect,
deviceSize,
SkPaint::kNone_FilterLevel);
canvas->translate(srcRect.width() + SkIntToScalar(10), 0);
draw(canvas,
srcRect,
deviceSize,
SkPaint::kLow_FilterLevel);
canvas->translate(srcRect.width() + SkIntToScalar(10), 0);
draw(canvas,
srcRect,
deviceSize,
SkPaint::kMedium_FilterLevel);
canvas->translate(srcRect.width() + SkIntToScalar(10), 0);
draw(canvas,
srcRect,
deviceSize,
SkPaint::kHigh_FilterLevel);
SkBitmap bitmap;
bitmap.allocN32Pixels(16, 16);
bitmap.eraseARGB(0x00, 0x00, 0x00, 0x00);
{
SkBitmapDevice bitmapDevice(bitmap);
SkCanvas bitmapCanvas(&bitmapDevice);
SkPaint paint;
paint.setColor(0xFF00FF00);
SkRect ovalRect = SkRect::MakeWH(16, 16);
ovalRect.inset(SkScalarDiv(2.0f, 3.0f), SkScalarDiv(2.0f, 3.0f));
bitmapCanvas.drawOval(ovalRect, paint);
}
SkRect inRect = SkRect::MakeXYWH(-4, -4, 20, 20);
SkRect outRect = SkRect::MakeXYWH(-24, -24, 120, 120);
SkAutoTUnref<SkBitmapSource> source(SkBitmapSource::Create(bitmap, inRect, outRect));
canvas->translate(srcRect.width() + SkIntToScalar(10), 0);
draw(canvas,
srcRect,
deviceSize,
SkPaint::kHigh_FilterLevel,
source.get());
}
virtual void recordCanvas(SkCanvas* canvas) {
const SkPoint translateDelta = getTranslateDelta();
for (int i = 0; i < M; i++) {
SkColor color = SK_ColorYELLOW + (i % 255);
SkIRect rect = SkIRect::MakeWH(i,i);
canvas->save();
// set the clip to the given region
SkRegion region;
region.setRect(rect);
canvas->clipRegion(region);
// fill the clip with a color
SkPaint paint;
paint.setColor(color);
canvas->drawPaint(paint);
// set a matrix on the canvas
SkMatrix matrix;
matrix.setRotate(SkIntToScalar(i % 360));
canvas->setMatrix(matrix);
// create a simple bitmap
SkBitmap bitmap;
bitmap.setConfig(SkBitmap::kRGB_565_Config, 10, 10);
bitmap.allocPixels();
// draw a single color into the bitmap
SkCanvas bitmapCanvas(bitmap);
bitmapCanvas.drawColor(SkColorSetA(color, i % 255));
// draw the bitmap onto the canvas
canvas->drawBitmapMatrix(bitmap, matrix);
canvas->restore();
canvas->translate(translateDelta.fX, translateDelta.fY);
}
}
