You can not select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
102 lines
3.6 KiB
102 lines
3.6 KiB
/*
|
|
* Copyright 2018 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 "SkCanvas.h"
|
|
#include "SkShader.h"
|
|
#include "SkSurface.h"
|
|
#include "sk_tool_utils.h"
|
|
|
|
static sk_sp<SkImage> make_image(SkCanvas* rootCanvas) {
|
|
static constexpr SkScalar kSize = 50;
|
|
SkImageInfo info = SkImageInfo::MakeN32Premul(kSize, kSize);
|
|
auto surface = sk_tool_utils::makeSurface(rootCanvas, info);
|
|
|
|
SkPaint p;
|
|
p.setAntiAlias(true);
|
|
p.setColor(SK_ColorGREEN);
|
|
|
|
surface->getCanvas()->drawCircle(kSize / 2, kSize / 2, kSize / 2, p);
|
|
|
|
p.setStyle(SkPaint::kStroke_Style);
|
|
p.setColor(SK_ColorRED);
|
|
surface->getCanvas()->drawLine(kSize * .25f, kSize * .50f, kSize * .75f, kSize * .50f, p);
|
|
surface->getCanvas()->drawLine(kSize * .50f, kSize * .25f, kSize * .50f, kSize * .75f, p);
|
|
|
|
return surface->makeImageSnapshot();
|
|
}
|
|
|
|
DEF_SIMPLE_GM(localmatrixshader_nested, canvas, 450, 1200) {
|
|
auto image = make_image(canvas);
|
|
|
|
using FactoryT = sk_sp<SkShader> (*)(const sk_sp<SkImage>&,
|
|
const SkMatrix& inner,
|
|
const SkMatrix& outer);
|
|
static const FactoryT gFactories[] = {
|
|
// SkLocalMatrixShader(SkImageShader(inner), outer)
|
|
[](const sk_sp<SkImage>& img, const SkMatrix& inner, const SkMatrix& outer) {
|
|
return img->makeShader(&inner)->makeWithLocalMatrix(outer);
|
|
},
|
|
|
|
// SkLocalMatrixShader(SkLocalMatrixShader(SkImageShader(I), inner), outer)
|
|
[](const sk_sp<SkImage>& img, const SkMatrix& inner, const SkMatrix& outer) {
|
|
return img->makeShader()->makeWithLocalMatrix(inner)->makeWithLocalMatrix(outer);
|
|
},
|
|
|
|
// SkLocalMatrixShader(SkComposeShader(SkImageShader(inner)), outer)
|
|
[](const sk_sp<SkImage>& img, const SkMatrix& inner, const SkMatrix& outer) {
|
|
return SkShader::MakeCompose(SkShader::MakeColorShader(SK_ColorTRANSPARENT),
|
|
img->makeShader(&inner),
|
|
SkBlendMode::kSrcOver)
|
|
->makeWithLocalMatrix(outer);
|
|
},
|
|
|
|
// SkLocalMatrixShader(SkComposeShader(SkLocalMatrixShader(SkImageShader(I), inner)), outer)
|
|
[](const sk_sp<SkImage>& img, const SkMatrix& inner, const SkMatrix& outer) {
|
|
return SkShader::MakeCompose(SkShader::MakeColorShader(SK_ColorTRANSPARENT),
|
|
img->makeShader()->makeWithLocalMatrix(inner),
|
|
SkBlendMode::kSrcOver)
|
|
->makeWithLocalMatrix(outer);
|
|
},
|
|
};
|
|
|
|
static const auto inner = SkMatrix::MakeScale(2, 2),
|
|
outer = SkMatrix::MakeTrans(20, 20);
|
|
|
|
SkPaint border;
|
|
border.setAntiAlias(true);
|
|
border.setStyle(SkPaint::kStroke_Style);
|
|
|
|
auto rect = SkRect::Make(image->bounds());
|
|
SkAssertResult(SkMatrix::Concat(inner, outer).mapRect(&rect));
|
|
|
|
const auto drawColumn = [&]() {
|
|
SkAutoCanvasRestore acr(canvas, true);
|
|
for (const auto& f : gFactories) {
|
|
SkPaint p;
|
|
p.setShader(f(image, inner, outer));
|
|
|
|
canvas->drawRect(rect, p);
|
|
canvas->drawRect(rect, border);
|
|
|
|
canvas->translate(0, rect.height() * 1.5f);
|
|
}
|
|
};
|
|
|
|
drawColumn();
|
|
|
|
{
|
|
SkAutoCanvasRestore acr(canvas, true);
|
|
canvas->translate(0, rect.height() * SK_ARRAY_COUNT(gFactories) * 1.5f);
|
|
drawColumn();
|
|
}
|
|
|
|
canvas->translate(rect.width() * 1.5f, 0);
|
|
canvas->scale(2, 2);
|
|
drawColumn();
|
|
}
|