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/*
* Copyright 2016 Google Inc.
*
* Use of this source code is governed by a BSD-style license that can be
* found in the LICENSE file.
*/
#include "SkBitmap.h"
#include "SkCanvas.h"
#include "SkGradientShader.h"
#include "SkPaintImageFilter.h"
#include "SkShader.h"
#include "Test.h"
static void test_unscaled(skiatest::Reporter* reporter) {
int w = 10, h = 10;
SkRect r = SkRect::MakeWH(SkIntToScalar(w), SkIntToScalar(h));
SkBitmap filterResult, paintResult;
filterResult.allocN32Pixels(w, h);
SkCanvas canvasFilter(filterResult);
canvasFilter.clear(0x00000000);
paintResult.allocN32Pixels(w, h);
SkCanvas canvasPaint(paintResult);
canvasPaint.clear(0x00000000);
SkPoint center = SkPoint::Make(SkIntToScalar(5), SkIntToScalar(5));
SkColor colors[] = {SK_ColorBLUE, SK_ColorRED, SK_ColorGREEN};
SkScalar pos[] = {0, SK_ScalarHalf, SK_Scalar1};
SkScalar radius = SkIntToScalar(5);
SkPaint gradientPaint;
gradientPaint.setShader(SkGradientShader::MakeRadial(
center, radius, colors, pos, SK_ARRAY_COUNT(colors), SkShader::kClamp_TileMode));
// Test using the image filter
{
SkPaint paint;
SkImageFilter::CropRect cr(r);
paint.setImageFilter(SkPaintImageFilter::Make(gradientPaint, &cr));
canvasFilter.drawRect(r, paint);
}
// Test using the paint directly
{
canvasPaint.drawRect(r, gradientPaint);
}
// Assert that both paths yielded the same result
for (int y = 0; y < r.height(); ++y) {
const SkPMColor* filterPtr = filterResult.getAddr32(0, y);
const SkPMColor* paintPtr = paintResult.getAddr32(0, y);
for (int x = 0; x < r.width(); ++x, ++filterPtr, ++paintPtr) {
REPORTER_ASSERT(reporter, *filterPtr == *paintPtr);
}
}
}
static void test_scaled(skiatest::Reporter* reporter) {
int w = 10, h = 10;
SkRect r = SkRect::MakeWH(SkIntToScalar(w), SkIntToScalar(h));
SkBitmap filterResult, paintResult;
filterResult.allocN32Pixels(w, h);
SkCanvas canvasFilter(filterResult);
canvasFilter.clear(0x00000000);
paintResult.allocN32Pixels(w, h);
SkCanvas canvasPaint(paintResult);
canvasPaint.clear(0x00000000);
SkPoint center = SkPoint::Make(SkIntToScalar(5), SkIntToScalar(5));
SkColor colors[] = {SK_ColorBLUE, SK_ColorRED, SK_ColorGREEN};
SkScalar pos[] = {0, SK_ScalarHalf, SK_Scalar1};
SkScalar radius = SkIntToScalar(5);
SkPaint gradientPaint;
gradientPaint.setShader(SkGradientShader::MakeRadial(
center, radius, colors, pos, SK_ARRAY_COUNT(colors), SkShader::kClamp_TileMode));
// Test using the image filter
{
SkPaint paint;
SkImageFilter::CropRect cr(r);
paint.setImageFilter(SkPaintImageFilter::Make(gradientPaint, &cr));
canvasFilter.scale(SkIntToScalar(2), SkIntToScalar(2));
canvasFilter.drawRect(r, paint);
}
// Test using the paint directly
{
canvasPaint.scale(SkIntToScalar(2), SkIntToScalar(2));
canvasPaint.drawRect(r, gradientPaint);
}
// Assert that both paths yielded the same result
for (int y = 0; y < r.height(); ++y) {
const SkPMColor* filterPtr = filterResult.getAddr32(0, y);
const SkPMColor* paintPtr = paintResult.getAddr32(0, y);
for (int x = 0; x < r.width(); ++x, ++filterPtr, ++paintPtr) {
REPORTER_ASSERT(reporter, *filterPtr == *paintPtr);
}
}
}
DEF_TEST(PaintImageFilter, reporter) {
test_unscaled(reporter);
test_scaled(reporter);
}
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