blob: e2df5065de6ececa1c7272b18417f42bd931621e [file] [log] [blame]
/*
* Copyright 2014 Google Inc.
*
* Use of this source code is governed by a BSD-style license that can be
* found in the LICENSE file.
*/
#include "gm/gm.h"
#include "include/core/SkBitmap.h"
#include "include/core/SkCanvas.h"
#include "include/core/SkColor.h"
#include "include/core/SkImage.h"
#include "include/core/SkImageFilter.h"
#include "include/core/SkMatrix.h"
#include "include/core/SkPaint.h"
#include "include/core/SkPoint.h"
#include "include/core/SkPoint3.h"
#include "include/core/SkRect.h"
#include "include/core/SkRefCnt.h"
#include "include/core/SkScalar.h"
#include "include/core/SkShader.h"
#include "include/core/SkSize.h"
#include "include/core/SkString.h"
#include "include/core/SkSurface.h"
#include "include/core/SkTileMode.h"
#include "include/core/SkTypes.h"
#include "include/effects/SkGradientShader.h"
#include "include/effects/SkImageFilters.h"
#include "include/effects/SkPerlinNoiseShader.h"
#include "tools/ToolUtils.h"
#include <utility>
#define RESIZE_FACTOR SkIntToScalar(4)
static sk_sp<SkImage> make_gradient_circle(int width, int height) {
SkScalar x = SkIntToScalar(width / 2);
SkScalar y = SkIntToScalar(height / 2);
SkScalar radius = std::min(x, y) * 4 / 5;
sk_sp<SkSurface> surface(SkSurface::MakeRasterN32Premul(width, height));
SkCanvas* canvas = surface->getCanvas();
canvas->clear(0x00000000);
SkColor colors[2];
colors[0] = SK_ColorWHITE;
colors[1] = SK_ColorBLACK;
SkPaint paint;
paint.setShader(SkGradientShader::MakeRadial(SkPoint::Make(x, y), radius, colors, nullptr,
2, SkTileMode::kClamp));
canvas->drawCircle(x, y, radius, paint);
return surface->makeImageSnapshot();
}
namespace skiagm {
class ImageFiltersScaledGM : public GM {
public:
ImageFiltersScaledGM() {
this->setBGColor(0x00000000);
}
protected:
SkString onShortName() override {
return SkString("imagefiltersscaled");
}
SkISize onISize() override {
return SkISize::Make(1428, 500);
}
void onOnceBeforeDraw() override {
fCheckerboard = ToolUtils::create_checkerboard_image(64, 64, 0xFFA0A0A0, 0xFF404040, 8);
fGradientCircle = make_gradient_circle(64, 64);
}
void onDraw(SkCanvas* canvas) override {
canvas->clear(SK_ColorBLACK);
sk_sp<SkImageFilter> gradient(SkImageFilters::Image(fGradientCircle));
sk_sp<SkImageFilter> checkerboard(SkImageFilters::Image(fCheckerboard));
SkPoint3 pointLocation = SkPoint3::Make(0, 0, SkIntToScalar(10));
SkPoint3 spotLocation = SkPoint3::Make(SkIntToScalar(-10),
SkIntToScalar(-10),
SkIntToScalar(20));
SkPoint3 spotTarget = SkPoint3::Make(SkIntToScalar(40), SkIntToScalar(40), 0);
SkScalar spotExponent = SK_Scalar1;
SkScalar cutoffAngle = SkIntToScalar(15);
SkScalar kd = SkIntToScalar(2);
SkScalar surfaceScale = SkIntToScalar(1);
SkColor white(0xFFFFFFFF);
SkMatrix resizeMatrix;
resizeMatrix.setScale(RESIZE_FACTOR, RESIZE_FACTOR);
sk_sp<SkImageFilter> filters[] = {
SkImageFilters::Blur(SkIntToScalar(4), SkIntToScalar(4), nullptr),
SkImageFilters::DropShadow(5, 10, 3, 3, SK_ColorYELLOW, nullptr),
SkImageFilters::DisplacementMap(SkColorChannel::kR, SkColorChannel::kR, 12,
std::move(gradient), checkerboard),
SkImageFilters::Dilate(1, 1, checkerboard),
SkImageFilters::Erode(1, 1, checkerboard),
SkImageFilters::Offset(SkIntToScalar(32), 0, nullptr),
SkImageFilters::MatrixTransform(resizeMatrix, SkSamplingOptions(), nullptr),
SkImageFilters::Shader(SkPerlinNoiseShader::MakeFractalNoise(
SkDoubleToScalar(0.1), SkDoubleToScalar(0.05), 1, 0)),
SkImageFilters::PointLitDiffuse(pointLocation, white, surfaceScale, kd, nullptr),
SkImageFilters::SpotLitDiffuse(spotLocation, spotTarget, spotExponent,
cutoffAngle, white, surfaceScale, kd, nullptr),
};
SkVector scales[] = {
SkVector::Make(SkScalarInvert(2), SkScalarInvert(2)),
SkVector::Make(SkIntToScalar(1), SkIntToScalar(1)),
SkVector::Make(SkIntToScalar(1), SkIntToScalar(2)),
SkVector::Make(SkIntToScalar(2), SkIntToScalar(1)),
SkVector::Make(SkIntToScalar(2), SkIntToScalar(2)),
};
SkRect r = SkRect::MakeWH(SkIntToScalar(64), SkIntToScalar(64));
SkScalar margin = SkIntToScalar(16);
SkRect bounds = r;
bounds.outset(margin, margin);
for (size_t j = 0; j < std::size(scales); ++j) {
canvas->save();
for (size_t i = 0; i < std::size(filters); ++i) {
SkPaint paint;
paint.setColor(SK_ColorBLUE);
paint.setImageFilter(filters[i]);
paint.setAntiAlias(true);
canvas->save();
canvas->scale(scales[j].fX, scales[j].fY);
canvas->clipRect(r);
if (5 == i) {
canvas->translate(SkIntToScalar(-32), 0);
} else if (6 == i) {
canvas->scale(SkScalarInvert(RESIZE_FACTOR),
SkScalarInvert(RESIZE_FACTOR));
}
canvas->drawCircle(r.centerX(), r.centerY(), r.width()*2/5, paint);
canvas->restore();
canvas->translate(r.width() * scales[j].fX + margin, 0);
}
canvas->restore();
canvas->translate(0, r.height() * scales[j].fY + margin);
}
}
private:
sk_sp<SkImage> fCheckerboard, fGradientCircle;
using INHERITED = GM;
};
//////////////////////////////////////////////////////////////////////////////
DEF_GM(return new ImageFiltersScaledGM;)
} // namespace skiagm