123456789101112131415161718192021222324252627282930313233343536373839404142434445464748495051525354555657585960616263646566676869707172737475767778798081828384858687888990919293949596979899100101102103104105106107108109110111112113114115116117118119 |
- /*
- * Copyright 2013 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/SkFilterQuality.h"
- #include "include/core/SkImage.h"
- #include "include/core/SkImageFilter.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/SkSize.h"
- #include "include/core/SkString.h"
- #include "include/core/SkSurface.h"
- #include "include/effects/SkImageSource.h"
- #include <utility>
- namespace skiagm {
- class ResizeGM : public GM {
- public:
- ResizeGM() {
- this->setBGColor(0x00000000);
- }
- protected:
- SkString onShortName() override {
- return SkString("resizeimagefilter");
- }
- void draw(SkCanvas* canvas,
- const SkRect& rect,
- const SkSize& deviceSize,
- SkFilterQuality filterQuality,
- sk_sp<SkImageFilter> input) {
- SkRect dstRect;
- canvas->getTotalMatrix().mapRect(&dstRect, rect);
- canvas->save();
- SkScalar deviceScaleX = deviceSize.width() / dstRect.width();
- SkScalar deviceScaleY = deviceSize.height() / dstRect.height();
- canvas->translate(rect.x(), rect.y());
- canvas->scale(deviceScaleX, deviceScaleY);
- canvas->translate(-rect.x(), -rect.y());
- SkMatrix matrix;
- matrix.setScale(SkScalarInvert(deviceScaleX), SkScalarInvert(deviceScaleY));
- sk_sp<SkImageFilter> filter(SkImageFilter::MakeMatrixFilter(matrix,
- filterQuality,
- std::move(input)));
- SkPaint filteredPaint;
- filteredPaint.setImageFilter(std::move(filter));
- canvas->saveLayer(&rect, &filteredPaint);
- SkPaint paint;
- paint.setColor(0xFF00FF00);
- SkRect ovalRect = rect;
- ovalRect.inset(SkIntToScalar(4), SkIntToScalar(4));
- canvas->drawOval(ovalRect, paint);
- canvas->restore(); // for saveLayer
- canvas->restore();
- }
- SkISize onISize() override {
- return SkISize::Make(520, 100);
- }
- void onDraw(SkCanvas* canvas) override {
- canvas->clear(SK_ColorBLACK);
- const SkRect srcRect = SkRect::MakeWH(96, 96);
- const SkSize deviceSize = SkSize::Make(16, 16);
- this->draw(canvas, srcRect, deviceSize, kNone_SkFilterQuality, nullptr);
- canvas->translate(srcRect.width() + SkIntToScalar(10), 0);
- this->draw(canvas, srcRect, deviceSize, kLow_SkFilterQuality, nullptr);
- canvas->translate(srcRect.width() + SkIntToScalar(10), 0);
- this->draw(canvas, srcRect, deviceSize, kMedium_SkFilterQuality, nullptr);
- canvas->translate(srcRect.width() + SkIntToScalar(10), 0);
- this->draw(canvas, srcRect, deviceSize, kHigh_SkFilterQuality, nullptr);
- {
- sk_sp<SkSurface> surface(SkSurface::MakeRasterN32Premul(16, 16));
- SkCanvas* surfaceCanvas = surface->getCanvas();
- surfaceCanvas->clear(0x000000);
- {
- SkPaint paint;
- paint.setColor(0xFF00FF00);
- SkRect ovalRect = SkRect::MakeWH(16, 16);
- ovalRect.inset(SkIntToScalar(2)/3, SkIntToScalar(2)/3);
- surfaceCanvas->drawOval(ovalRect, paint);
- }
- sk_sp<SkImage> image(surface->makeImageSnapshot());
- SkRect inRect = SkRect::MakeXYWH(-4, -4, 20, 20);
- SkRect outRect = SkRect::MakeXYWH(-24, -24, 120, 120);
- sk_sp<SkImageFilter> source(
- SkImageSource::Make(std::move(image), inRect, outRect, kHigh_SkFilterQuality));
- canvas->translate(srcRect.width() + SkIntToScalar(10), 0);
- this->draw(canvas, srcRect, deviceSize, kHigh_SkFilterQuality, std::move(source));
- }
- }
- private:
- typedef GM INHERITED;
- };
- //////////////////////////////////////////////////////////////////////////////
- DEF_GM(return new ResizeGM; )
- }
|