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#include "DMQuiltTask.h"
#include "DMUtil.h"
#include "DMWriteTask.h"
#include "SkCommandLineFlags.h"
#include "SkPicture.h"
DEFINE_bool(quilt, true, "If true, draw into a quilt of small tiles and compare.");
DEFINE_int32(quiltTile, 16, "Dimension of (square) quilt tile.");
namespace DM {
QuiltTask::QuiltTask(const Task& parent, skiagm::GM* gm, SkBitmap reference)
: CpuTask(parent)
, fName(UnderJoin(parent.name().c_str(), "quilt"))
, fGM(gm)
, fReference(reference)
{}
static int tiles_needed(int fullDimension, int tileDimension) {
return (fullDimension + tileDimension - 1) / tileDimension;
}
void QuiltTask::draw() {
SkAutoTUnref<SkPicture> recorded(RecordPicture(fGM.get()));
SkBitmap full;
AllocatePixels(fReference, &full);
SkCanvas fullCanvas(full);
SkBitmap tile;
tile.allocPixels(SkImageInfo::Make(FLAGS_quiltTile, FLAGS_quiltTile,
fReference.colorType(), kPremul_SkAlphaType));
SkCanvas tileCanvas(tile);
for (int y = 0; y < tiles_needed(full.height(), tile.height()); y++) {
for (int x = 0; x < tiles_needed(full.width(), tile.width()); x++) {
SkAutoCanvasRestore ar(&tileCanvas, true/*also save now*/);
const SkScalar xOffset = SkIntToScalar(x * tile.width()),
yOffset = SkIntToScalar(y * tile.height());
SkMatrix matrix = tileCanvas.getTotalMatrix();
matrix.postTranslate(-xOffset, -yOffset);
tileCanvas.setMatrix(matrix);
recorded->draw(&tileCanvas);
tileCanvas.flush();
fullCanvas.drawBitmap(tile, xOffset, yOffset, NULL);
}
}
if (!BitmapsEqual(full, fReference)) {
this->fail();
this->spawnChild(SkNEW_ARGS(WriteTask, (*this, full)));
}
}
bool QuiltTask::shouldSkip() const {
if (fGM->getFlags() & skiagm::GM::kSkipPicture_Flag) {
return true;
}
if (fGM->getFlags() & skiagm::GM::kSkipTiled_Flag) {
return true;
}
return !FLAGS_quilt;
}
} // namespace DM
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