skia2/gm/shallowgradient.cpp
Ben Wagner 7fde8e1728 IWYU for gms.
This almost gets gms to be iwyu clean. The last bit is around gm.cpp
and the tracing framework and its use of atomic. Will also need a way
of keeping things from regressing, which is difficult due to needing to
do this outside-in.

Change-Id: I1393531e99da8b0f1a29f55c53c86d53f459af7d
Reviewed-on: https://skia-review.googlesource.com/c/skia/+/211593
Reviewed-by: Herb Derby <herb@google.com>
Commit-Queue: Ben Wagner <bungeman@google.com>
2019-05-02 17:48:53 +00:00

95 lines
3.3 KiB
C++

/*
* 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)
, fDither(dither) {
fName.printf("shallow_gradient_%s", name);
}
protected:
SkString onShortName() override {
return fName;
}
SkISize onISize() override {
return SkISize::Make(800, 800);
}
void onDraw(SkCanvas* canvas) 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));
paint.setDither(fDither);
canvas->drawRect(r, paint);
}
private:
MakeShaderProc fProc;
SkString fName;
bool fDither;
typedef skiagm::GM INHERITED;
};
///////////////////////////////////////////////////////////////////////////////
DEF_GM( return new ShallowGradientGM(shader_linear, "linear", true); )
DEF_GM( return new ShallowGradientGM(shader_radial, "radial", true); )
DEF_GM( return new ShallowGradientGM(shader_conical, "conical", true); )
DEF_GM( return new ShallowGradientGM(shader_sweep, "sweep", true); )
DEF_GM( return new ShallowGradientGM(shader_linear, "linear_nodither", false); )
DEF_GM( return new ShallowGradientGM(shader_radial, "radial_nodither", false); )
DEF_GM( return new ShallowGradientGM(shader_conical, "conical_nodither", false); )
DEF_GM( return new ShallowGradientGM(shader_sweep, "sweep_nodither", false); )