07c5f52c94
Bug: skia:7650 Change-Id: Ie4a1c263bd54553a7cc31ee0ff1585f34a0369a5 Reviewed-on: https://skia-review.googlesource.com/c/skia/+/358176 Reviewed-by: Mike Reed <reed@google.com> Commit-Queue: Mike Reed <reed@google.com>
84 lines
2.7 KiB
C++
84 lines
2.7 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/gm.h"
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#include "include/core/SkCanvas.h"
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#include "include/core/SkColor.h"
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#include "include/core/SkImage.h"
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#include "include/core/SkImageFilter.h"
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#include "include/core/SkImageInfo.h"
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#include "include/core/SkMatrix.h"
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#include "include/core/SkPaint.h"
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#include "include/core/SkRect.h"
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#include "include/core/SkRefCnt.h"
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#include "include/core/SkScalar.h"
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#include "include/core/SkSurface.h"
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#include "include/effects/SkImageFilters.h"
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#include "tools/ToolUtils.h"
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#include <utility>
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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(ToolUtils::makeSurface(rootCanvas, info));
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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, SkSamplingOptions(), &paint);
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}
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typedef sk_sp<SkImageFilter> (*ImageFilterFactory)();
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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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[]{ return SkImageFilters::Blur(8, 8, nullptr); },
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[]{ return SkImageFilters::Dilate(8, 8, nullptr); },
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[]{ return SkImageFilters::Erode(8, 8, nullptr); },
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[]{ return SkImageFilters::Offset(8, 8, nullptr); },
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};
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const SkMatrix matrices[] = {
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SkMatrix::Scale(SK_ScalarHalf, SK_ScalarHalf),
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SkMatrix::Scale(2, 2),
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SkMatrix::Translate(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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