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/*
* 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 "gm.h"
#include "SkGradientShader.h"
typedef SkShader* (*MakeShaderProc)(const SkColor[], int count, const SkSize&);
static SkShader* shader_linear(const SkColor colors[], int count, const SkSize& size) {
SkPoint pts[] = { { 0, 0 }, { size.width(), size.height() } };
return SkGradientShader::CreateLinear(pts, colors, NULL, count,
SkShader::kClamp_TileMode);
}
static SkShader* shader_radial(const SkColor colors[], int count, const SkSize& size) {
SkPoint center = { size.width()/2, size.height()/2 };
return SkGradientShader::CreateRadial(center, size.width()/2, colors, NULL, count,
SkShader::kClamp_TileMode);
}
static SkShader* shader_conical(const SkColor colors[], int count, const SkSize& size) {
SkPoint center = { size.width()/2, size.height()/2 };
return SkGradientShader::CreateTwoPointConical(center, size.width()/64,
center, size.width()/2,
colors, NULL, count,
SkShader::kClamp_TileMode);
}
static SkShader* shader_sweep(const SkColor colors[], int count, const SkSize& size) {
return SkGradientShader::CreateSweep(size.width()/2, size.height()/2,
colors, NULL, count);
}
class ShallowGradientGM : public skiagm::GM {
public:
ShallowGradientGM(MakeShaderProc proc, const char name[]) : fProc(proc) {
fName.printf("shallow_gradient_%s", name);
}
protected:
uint32_t onGetFlags() const SK_OVERRIDE {
if (fName.contains("linear") || fName.contains("radial")) {
return kSkipTiled_Flag;
}
return 0;
}
SkString onShortName() SK_OVERRIDE {
return fName;
}
SkISize onISize() SK_OVERRIDE {
return SkISize::Make(800, 800);
}
void onDraw(SkCanvas* canvas) SK_OVERRIDE {
const SkColor colors[] = { 0xFF555555, 0xFF444444 };
const int colorCount = SK_ARRAY_COUNT(colors);
SkRect r = { 0, 0, this->width(), this->height() };
SkSize size = SkSize::Make(r.width(), r.height());
SkPaint paint;
paint.setShader(fProc(colors, colorCount, size))->unref();
canvas->drawRect(r, paint);
}
private:
MakeShaderProc fProc;
SkString fName;
typedef skiagm::GM INHERITED;
};
///////////////////////////////////////////////////////////////////////////////
DEF_GM( return new ShallowGradientGM(shader_linear, "linear"); )
DEF_GM( return new ShallowGradientGM(shader_radial, "radial"); )
DEF_GM( return new ShallowGradientGM(shader_conical, "conical"); )
DEF_GM( return new ShallowGradientGM(shader_sweep, "sweep"); )
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