930f69eef3
Should be no user- or test-visible changes. BUG=skia: Change-Id: I6499dc978a41fee344b847c118f84227271561c5 Reviewed-on: https://skia-review.googlesource.com/6906 Reviewed-by: Brian Salomon <bsalomon@google.com> Commit-Queue: Stephan White <senorblanco@chromium.org>
84 lines
2.8 KiB
C++
84 lines
2.8 KiB
C++
/*
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* Copyright 2015 Google Inc.
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*
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* Use of this source code is governed by a BSD-style license that can be
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* found in the LICENSE file.
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*/
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#include "gm.h"
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#include "SkCanvas.h"
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#include "SkBlurImageFilter.h"
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#include "SkColorFilterImageFilter.h"
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#include "SkModeColorFilter.h"
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#include "SkMorphologyImageFilter.h"
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#include "SkOffsetImageFilter.h"
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#include "SkSurface.h"
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static sk_sp<SkImage> make_image(SkCanvas* rootCanvas) {
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SkImageInfo info = SkImageInfo::MakeN32Premul(100, 100);
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auto surface(rootCanvas->makeSurface(info));
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if (!surface) {
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surface = SkSurface::MakeRaster(info);
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}
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SkPaint paint;
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paint.setAntiAlias(true);
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paint.setColor(SK_ColorRED);
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surface->getCanvas()->drawCircle(50, 50, 50, paint);
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return surface->makeImageSnapshot();
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}
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static void show_image(SkCanvas* canvas, SkImage* image, sk_sp<SkImageFilter> filter) {
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SkPaint paint;
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paint.setStyle(SkPaint::kStroke_Style);
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SkRect r = SkRect::MakeIWH(image->width(), image->height()).makeOutset(SK_ScalarHalf,
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SK_ScalarHalf);
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canvas->drawRect(r, paint);
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paint.setStyle(SkPaint::kFill_Style);
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paint.setImageFilter(filter);
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canvas->drawImage(image, 0, 0, &paint);
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}
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typedef sk_sp<SkImageFilter> (*ImageFilterFactory)();
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// +[]{...} did not work on windows (VS)
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// (ImageFilterFactory)[]{...} did not work on linux (gcc)
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// hence this cast function
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template <typename T> ImageFilterFactory IFCCast(T arg) { return arg; }
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// Show the effect of localmatriximagefilter with various matrices, on various filters
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DEF_SIMPLE_GM(localmatriximagefilter, canvas, 640, 640) {
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sk_sp<SkImage> image0(make_image(canvas));
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const ImageFilterFactory factories[] = {
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IFCCast([]{ return SkBlurImageFilter::Make(8, 8, nullptr); }),
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IFCCast([]{ return SkDilateImageFilter::Make(8, 8, nullptr); }),
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IFCCast([]{ return SkErodeImageFilter::Make(8, 8, nullptr); }),
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IFCCast([]{ return SkOffsetImageFilter::Make(8, 8, nullptr); }),
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};
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const SkMatrix matrices[] = {
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SkMatrix::MakeScale(SK_ScalarHalf, SK_ScalarHalf),
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SkMatrix::MakeScale(2, 2),
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SkMatrix::MakeTrans(10, 10)
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};
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const SkScalar spacer = image0->width() * 3.0f / 2;
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canvas->translate(40, 40);
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for (auto&& factory : factories) {
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sk_sp<SkImageFilter> filter(factory());
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canvas->save();
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show_image(canvas, image0.get(), filter);
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for (const auto& matrix : matrices) {
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sk_sp<SkImageFilter> localFilter(filter->makeWithLocalMatrix(matrix));
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canvas->translate(spacer, 0);
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show_image(canvas, image0.get(), std::move(localFilter));
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}
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canvas->restore();
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canvas->translate(0, spacer);
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}
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}
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