blob: 05044a07be778c09799303a9b8b98ae0b866596c [file] [log] [blame]
/*
* Copyright 2013 Google Inc.
*
* Use of this source code is governed by a BSD-style license that can be
* found in the LICENSE file.
*/
#include "include/core/SkBitmap.h"
#include "include/core/SkCanvas.h"
#include "include/core/SkMatrix.h"
#include "include/core/SkPaint.h"
#include "include/core/SkRect.h"
#include "include/core/SkRefCnt.h"
#include "include/core/SkScalar.h"
#include "include/effects/SkLayerDrawLooper.h"
#include "src/core/SkArenaAlloc.h"
#include "src/core/SkBitmapDevice.h"
#include "src/core/SkDraw.h"
#include "tests/Test.h"
static SkBitmap make_bm(int w, int h) {
SkBitmap bm;
bm.allocN32Pixels(w, h);
return bm;
}
// TODO: can this be derived from SkBaseDevice?
class FakeDevice : public SkBitmapDevice {
public:
FakeDevice() : INHERITED(make_bm(100, 100), SkSurfaceProps(0, kUnknown_SkPixelGeometry),
nullptr, nullptr) {
}
void drawRect(const SkRect& r, const SkPaint& paint) override {
fLastMatrix = this->localToDevice();
this->INHERITED::drawRect(r, paint);
}
SkMatrix fLastMatrix;
private:
typedef SkBitmapDevice INHERITED;
};
static void test_frontToBack(skiatest::Reporter* reporter) {
SkLayerDrawLooper::Builder looperBuilder;
SkLayerDrawLooper::LayerInfo layerInfo;
// Add the front layer, with the defaults.
(void)looperBuilder.addLayer(layerInfo);
// Add the back layer, with some layer info set.
layerInfo.fOffset.set(10.0f, 20.0f);
layerInfo.fPaintBits |= SkLayerDrawLooper::kXfermode_Bit;
SkPaint* layerPaint = looperBuilder.addLayer(layerInfo);
layerPaint->setBlendMode(SkBlendMode::kSrc);
SkPaint paint;
auto looper(looperBuilder.detach());
SkArenaAlloc alloc{48};
SkDrawLooper::Context* context = looper->makeContext(&alloc);
SkDrawLooper::Context::Info info;
// The back layer should come first.
REPORTER_ASSERT(reporter, context->next(&info, &paint));
REPORTER_ASSERT(reporter, paint.getBlendMode() == SkBlendMode::kSrc);
REPORTER_ASSERT(reporter, 10.0f == info.fTranslate.fX);
REPORTER_ASSERT(reporter, 20.0f == info.fTranslate.fY);
paint.reset();
// Then the front layer.
REPORTER_ASSERT(reporter, context->next(&info, &paint));
REPORTER_ASSERT(reporter, paint.getBlendMode() == SkBlendMode::kSrcOver);
REPORTER_ASSERT(reporter, 0.0f == info.fTranslate.fX);
REPORTER_ASSERT(reporter, 0.0f == info.fTranslate.fY);
// Only two layers were added, so that should be the end.
REPORTER_ASSERT(reporter, !context->next(&info, &paint));
}
static void test_backToFront(skiatest::Reporter* reporter) {
SkLayerDrawLooper::Builder looperBuilder;
SkLayerDrawLooper::LayerInfo layerInfo;
// Add the back layer, with the defaults.
(void)looperBuilder.addLayerOnTop(layerInfo);
// Add the front layer, with some layer info set.
layerInfo.fOffset.set(10.0f, 20.0f);
layerInfo.fPaintBits |= SkLayerDrawLooper::kXfermode_Bit;
SkPaint* layerPaint = looperBuilder.addLayerOnTop(layerInfo);
layerPaint->setBlendMode(SkBlendMode::kSrc);
SkPaint paint;
auto looper(looperBuilder.detach());
SkArenaAlloc alloc{48};
SkDrawLooper::Context* context = looper->makeContext(&alloc);
SkDrawLooper::Context::Info info;
// The back layer should come first.
REPORTER_ASSERT(reporter, context->next(&info, &paint));
REPORTER_ASSERT(reporter, paint.getBlendMode() == SkBlendMode::kSrcOver);
REPORTER_ASSERT(reporter, 0.0f == info.fTranslate.fX);
REPORTER_ASSERT(reporter, 0.0f == info.fTranslate.fY);
paint.reset();
// Then the front layer.
REPORTER_ASSERT(reporter, context->next(&info, &paint));
REPORTER_ASSERT(reporter, paint.getBlendMode() == SkBlendMode::kSrc);
REPORTER_ASSERT(reporter, 10.0f == info.fTranslate.fX);
REPORTER_ASSERT(reporter, 20.0f == info.fTranslate.fY);
// Only two layers were added, so that should be the end.
REPORTER_ASSERT(reporter, !context->next(&info, &paint));
}
static void test_mixed(skiatest::Reporter* reporter) {
SkLayerDrawLooper::Builder looperBuilder;
SkLayerDrawLooper::LayerInfo layerInfo;
// Add the back layer, with the defaults.
(void)looperBuilder.addLayer(layerInfo);
// Add the front layer, with some layer info set.
layerInfo.fOffset.set(10.0f, 20.0f);
layerInfo.fPaintBits |= SkLayerDrawLooper::kXfermode_Bit;
SkPaint* layerPaint = looperBuilder.addLayerOnTop(layerInfo);
layerPaint->setBlendMode(SkBlendMode::kSrc);
SkPaint paint;
sk_sp<SkDrawLooper> looper(looperBuilder.detach());
SkArenaAlloc alloc{48};
SkDrawLooper::Context* context = looper->makeContext(&alloc);
SkDrawLooper::Context::Info info;
// The back layer should come first.
REPORTER_ASSERT(reporter, context->next(&info, &paint));
REPORTER_ASSERT(reporter, paint.getBlendMode() == SkBlendMode::kSrcOver);
REPORTER_ASSERT(reporter, 0.0f == info.fTranslate.fX);
REPORTER_ASSERT(reporter, 0.0f == info.fTranslate.fY);
paint.reset();
// Then the front layer.
REPORTER_ASSERT(reporter, context->next(&info, &paint));
REPORTER_ASSERT(reporter, paint.getBlendMode() == SkBlendMode::kSrc);
REPORTER_ASSERT(reporter, 10.0f == info.fTranslate.fX);
REPORTER_ASSERT(reporter, 20.0f == info.fTranslate.fY);
// Only two layers were added, so that should be the end.
REPORTER_ASSERT(reporter, !context->next(&info, &paint));
}
DEF_TEST(LayerDrawLooper, reporter) {
test_frontToBack(reporter);
test_backToFront(reporter);
test_mixed(reporter);
}