skia2/gm/localmatriximagefilter.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

91 lines
3.1 KiB
C++

/*
* Copyright 2015 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/SkImage.h"
#include "include/core/SkImageFilter.h"
#include "include/core/SkImageInfo.h"
#include "include/core/SkMatrix.h"
#include "include/core/SkPaint.h"
#include "include/core/SkRect.h"
#include "include/core/SkRefCnt.h"
#include "include/core/SkScalar.h"
#include "include/core/SkSurface.h"
#include "include/effects/SkBlurImageFilter.h"
#include "include/effects/SkMorphologyImageFilter.h"
#include "include/effects/SkOffsetImageFilter.h"
#include "tools/ToolUtils.h"
#include <utility>
static sk_sp<SkImage> make_image(SkCanvas* rootCanvas) {
SkImageInfo info = SkImageInfo::MakeN32Premul(100, 100);
auto surface(ToolUtils::makeSurface(rootCanvas, info));
SkPaint paint;
paint.setAntiAlias(true);
paint.setColor(SK_ColorRED);
surface->getCanvas()->drawCircle(50, 50, 50, paint);
return surface->makeImageSnapshot();
}
static void show_image(SkCanvas* canvas, SkImage* image, sk_sp<SkImageFilter> filter) {
SkPaint paint;
paint.setStyle(SkPaint::kStroke_Style);
SkRect r = SkRect::MakeIWH(image->width(), image->height()).makeOutset(SK_ScalarHalf,
SK_ScalarHalf);
canvas->drawRect(r, paint);
paint.setStyle(SkPaint::kFill_Style);
paint.setImageFilter(filter);
canvas->drawImage(image, 0, 0, &paint);
}
typedef sk_sp<SkImageFilter> (*ImageFilterFactory)();
// +[]{...} did not work on windows (VS)
// (ImageFilterFactory)[]{...} did not work on linux (gcc)
// hence this cast function
template <typename T> ImageFilterFactory IFCCast(T arg) { return arg; }
// Show the effect of localmatriximagefilter with various matrices, on various filters
DEF_SIMPLE_GM(localmatriximagefilter, canvas, 640, 640) {
sk_sp<SkImage> image0(make_image(canvas));
const ImageFilterFactory factories[] = {
IFCCast([]{ return SkBlurImageFilter::Make(8, 8, nullptr); }),
IFCCast([]{ return SkDilateImageFilter::Make(8, 8, nullptr); }),
IFCCast([]{ return SkErodeImageFilter::Make(8, 8, nullptr); }),
IFCCast([]{ return SkOffsetImageFilter::Make(8, 8, nullptr); }),
};
const SkMatrix matrices[] = {
SkMatrix::MakeScale(SK_ScalarHalf, SK_ScalarHalf),
SkMatrix::MakeScale(2, 2),
SkMatrix::MakeTrans(10, 10)
};
const SkScalar spacer = image0->width() * 3.0f / 2;
canvas->translate(40, 40);
for (auto&& factory : factories) {
sk_sp<SkImageFilter> filter(factory());
canvas->save();
show_image(canvas, image0.get(), filter);
for (const auto& matrix : matrices) {
sk_sp<SkImageFilter> localFilter(filter->makeWithLocalMatrix(matrix));
canvas->translate(spacer, 0);
show_image(canvas, image0.get(), std::move(localFilter));
}
canvas->restore();
canvas->translate(0, spacer);
}
}