diff options
author | 2013-05-22 12:35:50 +0000 | |
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committer | 2013-05-22 12:35:50 +0000 | |
commit | 8f838259ab65e44562902679fa88cb00575b99ce (patch) | |
tree | cb6224073c81152b0d00d693aae4e0b8ee2d4a8f /tests | |
parent | b148aca07e7cd0150bd9c750b54584f7f4c38cfb (diff) |
Add methods to SkLayerDrawLooper to allow adding layers on top
as well as on the bottom.
This is more convenient for some callers who generate layers
from a data structure in bottom-to-top, rather than top-to-bottom,
order.
BUG=242529
R=tomhudson@chromium.org
Author: jbroman@chromium.org
Review URL: https://chromiumcodereview.appspot.com/15314003
git-svn-id: http://skia.googlecode.com/svn/trunk@9233 2bbb7eff-a529-9590-31e7-b0007b416f81
Diffstat (limited to 'tests')
-rw-r--r-- | tests/LayerDrawLooperTest.cpp | 154 |
1 files changed, 154 insertions, 0 deletions
diff --git a/tests/LayerDrawLooperTest.cpp b/tests/LayerDrawLooperTest.cpp new file mode 100644 index 0000000000..7b85fc814a --- /dev/null +++ b/tests/LayerDrawLooperTest.cpp @@ -0,0 +1,154 @@ +/* + * 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 "Test.h" +#include "SkBitmap.h" +#include "SkCanvas.h" +#include "SkDraw.h" +#include "SkDevice.h" +#include "SkLayerDrawLooper.h" +#include "SkMatrix.h" +#include "SkPaint.h" +#include "SkRect.h" +#include "SkRefCnt.h" +#include "SkScalar.h" +#include "SkXfermode.h" + +namespace { + +class FakeDevice : public SkDevice { +public: + FakeDevice() : SkDevice(SkBitmap::kARGB_8888_Config, 100, 100) { } + + virtual void drawRect(const SkDraw& draw, const SkRect& r, const SkPaint& paint) { + fLastMatrix = *draw.fMatrix; + SkDevice::drawRect(draw, r, paint); + } + + SkMatrix fLastMatrix; +}; + +} // namespace + +static void test_frontToBack(skiatest::Reporter* reporter) { + SkAutoTUnref<SkLayerDrawLooper> looper(SkNEW(SkLayerDrawLooper)); + SkLayerDrawLooper::LayerInfo layerInfo; + + // Add the front layer, with the defaults. + (void)looper->addLayer(layerInfo); + + // Add the back layer, with some layer info set. + layerInfo.fOffset.set(SkFloatToScalar(10.0f), SkFloatToScalar(20.0f)); + layerInfo.fPaintBits |= SkLayerDrawLooper::kXfermode_Bit; + SkPaint* layerPaint = looper->addLayer(layerInfo); + layerPaint->setXfermodeMode(SkXfermode::kSrc_Mode); + + FakeDevice device; + SkCanvas canvas(&device); + SkPaint paint; + looper->init(&canvas); + + // The back layer should come first. + REPORTER_ASSERT(reporter, looper->next(&canvas, &paint)); + REPORTER_ASSERT(reporter, SkXfermode::IsMode(paint.getXfermode(), SkXfermode::kSrc_Mode)); + canvas.drawRect(SkRect::MakeWH(SkFloatToScalar(50.0f), SkFloatToScalar(50.0f)), paint); + REPORTER_ASSERT(reporter, SkFloatToScalar(10.0f) == device.fLastMatrix.getTranslateX()); + REPORTER_ASSERT(reporter, SkFloatToScalar(20.0f) == device.fLastMatrix.getTranslateY()); + paint.reset(); + + // Then the front layer. + REPORTER_ASSERT(reporter, looper->next(&canvas, &paint)); + REPORTER_ASSERT(reporter, SkXfermode::IsMode(paint.getXfermode(), SkXfermode::kSrcOver_Mode)); + canvas.drawRect(SkRect::MakeWH(SkFloatToScalar(50.0f), SkFloatToScalar(50.0f)), paint); + REPORTER_ASSERT(reporter, SkFloatToScalar(0.0f) == device.fLastMatrix.getTranslateX()); + REPORTER_ASSERT(reporter, SkFloatToScalar(0.0f) == device.fLastMatrix.getTranslateY()); + + // Only two layers were added, so that should be the end. + REPORTER_ASSERT(reporter, !looper->next(&canvas, &paint)); +} + +static void test_backToFront(skiatest::Reporter* reporter) { + SkAutoTUnref<SkLayerDrawLooper> looper(SkNEW(SkLayerDrawLooper)); + SkLayerDrawLooper::LayerInfo layerInfo; + + // Add the back layer, with the defaults. + (void)looper->addLayerOnTop(layerInfo); + + // Add the front layer, with some layer info set. + layerInfo.fOffset.set(SkFloatToScalar(10.0f), SkFloatToScalar(20.0f)); + layerInfo.fPaintBits |= SkLayerDrawLooper::kXfermode_Bit; + SkPaint* layerPaint = looper->addLayerOnTop(layerInfo); + layerPaint->setXfermodeMode(SkXfermode::kSrc_Mode); + + FakeDevice device; + SkCanvas canvas(&device); + SkPaint paint; + looper->init(&canvas); + + // The back layer should come first. + REPORTER_ASSERT(reporter, looper->next(&canvas, &paint)); + REPORTER_ASSERT(reporter, SkXfermode::IsMode(paint.getXfermode(), SkXfermode::kSrcOver_Mode)); + canvas.drawRect(SkRect::MakeWH(SkFloatToScalar(50.0f), SkFloatToScalar(50.0f)), paint); + REPORTER_ASSERT(reporter, SkFloatToScalar(0.0f) == device.fLastMatrix.getTranslateX()); + REPORTER_ASSERT(reporter, SkFloatToScalar(0.0f) == device.fLastMatrix.getTranslateY()); + paint.reset(); + + // Then the front layer. + REPORTER_ASSERT(reporter, looper->next(&canvas, &paint)); + REPORTER_ASSERT(reporter, SkXfermode::IsMode(paint.getXfermode(), SkXfermode::kSrc_Mode)); + canvas.drawRect(SkRect::MakeWH(SkFloatToScalar(50.0f), SkFloatToScalar(50.0f)), paint); + REPORTER_ASSERT(reporter, SkFloatToScalar(10.0f) == device.fLastMatrix.getTranslateX()); + REPORTER_ASSERT(reporter, SkFloatToScalar(20.0f) == device.fLastMatrix.getTranslateY()); + + // Only two layers were added, so that should be the end. + REPORTER_ASSERT(reporter, !looper->next(&canvas, &paint)); +} + +static void test_mixed(skiatest::Reporter* reporter) { + SkAutoTUnref<SkLayerDrawLooper> looper(SkNEW(SkLayerDrawLooper)); + SkLayerDrawLooper::LayerInfo layerInfo; + + // Add the back layer, with the defaults. + (void)looper->addLayer(layerInfo); + + // Add the front layer, with some layer info set. + layerInfo.fOffset.set(SkFloatToScalar(10.0f), SkFloatToScalar(20.0f)); + layerInfo.fPaintBits |= SkLayerDrawLooper::kXfermode_Bit; + SkPaint* layerPaint = looper->addLayerOnTop(layerInfo); + layerPaint->setXfermodeMode(SkXfermode::kSrc_Mode); + + FakeDevice device; + SkCanvas canvas(&device); + SkPaint paint; + looper->init(&canvas); + + // The back layer should come first. + REPORTER_ASSERT(reporter, looper->next(&canvas, &paint)); + REPORTER_ASSERT(reporter, SkXfermode::IsMode(paint.getXfermode(), SkXfermode::kSrcOver_Mode)); + canvas.drawRect(SkRect::MakeWH(SkFloatToScalar(50.0f), SkFloatToScalar(50.0f)), paint); + REPORTER_ASSERT(reporter, SkFloatToScalar(0.0f) == device.fLastMatrix.getTranslateX()); + REPORTER_ASSERT(reporter, SkFloatToScalar(0.0f) == device.fLastMatrix.getTranslateY()); + paint.reset(); + + // Then the front layer. + REPORTER_ASSERT(reporter, looper->next(&canvas, &paint)); + REPORTER_ASSERT(reporter, SkXfermode::IsMode(paint.getXfermode(), SkXfermode::kSrc_Mode)); + canvas.drawRect(SkRect::MakeWH(SkFloatToScalar(50.0f), SkFloatToScalar(50.0f)), paint); + REPORTER_ASSERT(reporter, SkFloatToScalar(10.0f) == device.fLastMatrix.getTranslateX()); + REPORTER_ASSERT(reporter, SkFloatToScalar(20.0f) == device.fLastMatrix.getTranslateY()); + + // Only two layers were added, so that should be the end. + REPORTER_ASSERT(reporter, !looper->next(&canvas, &paint)); +} + +static void TestLayerDrawLooper(skiatest::Reporter* reporter) { + test_frontToBack(reporter); + test_backToFront(reporter); + test_mixed(reporter); +} + +#include "TestClassDef.h" +DEFINE_TESTCLASS("LayerDrawLooper", TestLayerDrawLooperClass, TestLayerDrawLooper) |