blob: bfe8c64e477519050b2f2575b909c37faefec5d7 [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 "gm/gm.h"
#include "include/core/SkCanvas.h"
#include "include/core/SkColor.h"
#include "include/core/SkPaint.h"
#include "include/core/SkPoint.h"
#include "include/core/SkRect.h"
#include "include/core/SkRefCnt.h"
#include "include/core/SkShader.h"
#include "include/core/SkSize.h"
#include "include/core/SkString.h"
#include "include/core/SkTileMode.h"
#include "include/core/SkTypes.h"
#include "include/effects/SkGradientShader.h"
typedef sk_sp<SkShader> (*MakeShaderProc)(const SkColor[], int count, const SkSize&);
static sk_sp<SkShader> shader_linear(const SkColor colors[], int count, const SkSize& size) {
SkPoint pts[] = { { 0, 0 }, { size.width(), size.height() } };
return SkGradientShader::MakeLinear(pts, colors, nullptr, count, SkTileMode::kClamp);
}
static sk_sp<SkShader> shader_radial(const SkColor colors[], int count, const SkSize& size) {
SkPoint center = { size.width()/2, size.height()/2 };
return SkGradientShader::MakeRadial(center, size.width()/2, colors, nullptr, count,
SkTileMode::kClamp);
}
static sk_sp<SkShader> shader_conical(const SkColor colors[], int count, const SkSize& size) {
SkPoint center = { size.width()/2, size.height()/2 };
return SkGradientShader::MakeTwoPointConical(center, size.width()/64, center, size.width()/2,
colors, nullptr, count, SkTileMode::kClamp);
}
static sk_sp<SkShader> shader_sweep(const SkColor colors[], int count, const SkSize& size) {
return SkGradientShader::MakeSweep(size.width()/2, size.height()/2, colors, nullptr, count);
}
class ShallowGradientGM : public skiagm::GM {
public:
ShallowGradientGM(MakeShaderProc proc, const char name[], bool dither)
: fProc(proc), fName(name), fDither(dither) {}
private:
MakeShaderProc fProc;
const char* fName;
bool fDither;
SkString onShortName() override {
return SkStringPrintf("shallow_gradient_%s%s", fName, fDither ? "" : "_nodither");
}
SkISize onISize() override { return {800, 800}; }
void onDraw(SkCanvas* canvas) override {
const SkColor colors[] = { 0xFF555555, 0xFF444444 };
const int colorCount = std::size(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));
paint.setDither(fDither);
canvas->drawRect(r, paint);
}
};
///////////////////////////////////////////////////////////////////////////////
#define M(PROC, DITHER) DEF_GM( return new ShallowGradientGM(shader_ ## PROC, #PROC, DITHER); )
M(linear, true)
M(radial, true)
M(conical, true)
M(sweep, true)
M(linear, false)
M(radial, false)
M(conical, false)
M(sweep, false)
#undef M