skia2/gm/perspimages.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

134 lines
4.9 KiB
C++

/*
* 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