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- /*
- * 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/gm.h"
- #include "include/core/SkCanvas.h"
- #include "include/core/SkFilterQuality.h"
- #include "include/core/SkImage.h"
- #include "include/core/SkMatrix.h"
- #include "include/core/SkPaint.h"
- #include "include/core/SkRect.h"
- #include "include/core/SkRefCnt.h"
- #include "include/core/SkSize.h"
- #include "include/core/SkString.h"
- #include "include/private/SkTArray.h"
- #include "include/private/SkTDArray.h"
- #include "tools/Resources.h"
- #include <initializer_list>
- static sk_sp<SkImage> make_image1() { return GetResourceAsImage("images/mandrill_128.png"); }
- static sk_sp<SkImage> make_image2() {
- return GetResourceAsImage("images/brickwork-texture.jpg")->makeSubset({0, 0, 128, 128});
- }
- namespace skiagm {
- class PerspImages : public GM {
- public:
- PerspImages() = default;
- protected:
- SkString onShortName() override { return SkString("persp_images"); }
- SkISize onISize() override { return SkISize::Make(1150, 1280); }
- void onOnceBeforeDraw() override {
- fImages.push_back(make_image1());
- fImages.push_back(make_image2());
- }
- void onDraw(SkCanvas* canvas) override {
- SkTDArray<SkMatrix> matrices;
- matrices.push()->setAll(1.f, 0.f, 0.f,
- 0.f, 1.f, 0.f,
- 0.f, 0.005f, 1.f);
- matrices.push()->setAll(1.f, 0.f, 0.f,
- 0.f, 1.f, 0.f,
- 0.007f, -0.005f, 1.f);
- matrices[1].preSkew(0.2f, -0.1f);
- matrices[1].preRotate(-65.f);
- matrices[1].preScale(1.2f, .8f);
- matrices[1].postTranslate(0.f, 60.f);
- SkPaint paint;
- int n = 0;
- SkRect bounds = SkRect::MakeEmpty();
- for (const auto& img : fImages) {
- SkRect imgB = SkRect::MakeWH(img->width(), img->height());
- for (const auto& m : matrices) {
- SkRect temp;
- m.mapRect(&temp, imgB);
- bounds.join(temp);
- }
- }
- canvas->translate(-bounds.fLeft + 10.f, -bounds.fTop + 10.f);
- canvas->save();
- enum class DrawType {
- kDrawImage,
- kDrawImageRectStrict,
- kDrawImageRectFast,
- };
- for (auto type :
- {DrawType::kDrawImage, DrawType::kDrawImageRectStrict, DrawType::kDrawImageRectFast}) {
- for (const auto& m : matrices) {
- for (auto aa : {false, true}) {
- paint.setAntiAlias(aa);
- for (auto filter : {kNone_SkFilterQuality, kLow_SkFilterQuality,
- kMedium_SkFilterQuality, kHigh_SkFilterQuality}) {
- for (const auto& img : fImages) {
- paint.setFilterQuality(filter);
- canvas->save();
- canvas->concat(m);
- SkRect src = {img->width() / 4.f, img->height() / 4.f,
- 3.f * img->width() / 4.f, 3.f * img->height() / 4};
- SkRect dst = {0, 0,
- 3.f / 4.f * img->width(), 3.f / 4.f * img->height()};
- switch (type) {
- case DrawType::kDrawImage:
- canvas->drawImage(img, 0, 0, &paint);
- break;
- case DrawType::kDrawImageRectStrict:
- canvas->drawImageRect(img, src, dst, &paint,
- SkCanvas::kStrict_SrcRectConstraint);
- break;
- case DrawType::kDrawImageRectFast:
- canvas->drawImageRect(img, src, dst, &paint,
- SkCanvas::kFast_SrcRectConstraint);
- break;
- }
- canvas->restore();
- ++n;
- if (n < 8) {
- canvas->translate(bounds.width() + 10.f, 0);
- } else {
- canvas->restore();
- canvas->translate(0, bounds.height() + 10.f);
- canvas->save();
- n = 0;
- }
- }
- }
- }
- }
- }
- canvas->restore();
- }
- private:
- static constexpr int kNumImages = 4;
- SkTArray<sk_sp<SkImage>> fImages;
- typedef GM INHERITED;
- };
- //////////////////////////////////////////////////////////////////////////////
- DEF_GM(return new PerspImages();)
- } // namespace skiagm
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