93a1215fe0
clone (+rebase) of https://codereview.chromium.org/1009183002/ BUG=skia: TBR=scroggo@google.com Review URL: https://codereview.chromium.org/1014533004
112 lines
3.9 KiB
C++
112 lines
3.9 KiB
C++
/*
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* Copyright 2013 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 "SkPictureImageFilter.h"
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#include "SkPictureRecorder.h"
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// This GM exercises the SkPictureImageFilter ImageFilter class.
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class PictureImageFilterGM : public skiagm::GM {
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public:
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PictureImageFilterGM() {
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}
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protected:
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SkString onShortName() SK_OVERRIDE {
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return SkString("pictureimagefilter");
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}
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void makePicture() {
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SkPictureRecorder recorder;
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SkCanvas* canvas = recorder.beginRecording(100, 100, NULL, 0);
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canvas->clear(0x00000000);
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SkPaint paint;
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paint.setAntiAlias(true);
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sk_tool_utils::set_portable_typeface(&paint);
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paint.setColor(0xFFFFFFFF);
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paint.setTextSize(SkIntToScalar(96));
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const char* str = "e";
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canvas->drawText(str, strlen(str), SkIntToScalar(20), SkIntToScalar(70), paint);
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fPicture.reset(recorder.endRecording());
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}
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SkISize onISize() SK_OVERRIDE { return SkISize::Make(600, 300); }
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void onOnceBeforeDraw() SK_OVERRIDE {
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this->makePicture();
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}
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static void fillRectFiltered(SkCanvas* canvas, const SkRect& clipRect, SkImageFilter* filter) {
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SkPaint paint;
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paint.setImageFilter(filter);
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canvas->save();
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canvas->clipRect(clipRect);
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canvas->drawPaint(paint);
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canvas->restore();
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}
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void onDraw(SkCanvas* canvas) SK_OVERRIDE {
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canvas->clear(0x00000000);
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{
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SkRect srcRect = SkRect::MakeXYWH(20, 20, 30, 30);
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SkRect emptyRect = SkRect::MakeXYWH(20, 20, 0, 0);
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SkRect bounds = SkRect::MakeXYWH(0, 0, 100, 100);
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SkAutoTUnref<SkPictureImageFilter> pictureSource(
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SkPictureImageFilter::Create(fPicture));
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SkAutoTUnref<SkPictureImageFilter> pictureSourceSrcRect(
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SkPictureImageFilter::Create(fPicture, srcRect));
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SkAutoTUnref<SkPictureImageFilter> pictureSourceEmptyRect(
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SkPictureImageFilter::Create(fPicture, emptyRect));
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SkAutoTUnref<SkPictureImageFilter> pictureSourceResampled(
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SkPictureImageFilter::CreateForLocalSpace(fPicture, fPicture->cullRect(),
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kLow_SkFilterQuality));
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SkAutoTUnref<SkPictureImageFilter> pictureSourcePixelated(
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SkPictureImageFilter::CreateForLocalSpace(fPicture, fPicture->cullRect(),
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kNone_SkFilterQuality));
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canvas->save();
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// Draw the picture unscaled.
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fillRectFiltered(canvas, bounds, pictureSource);
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canvas->translate(SkIntToScalar(100), 0);
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// Draw an unscaled subset of the source picture.
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fillRectFiltered(canvas, bounds, pictureSourceSrcRect);
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canvas->translate(SkIntToScalar(100), 0);
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// Draw the picture to an empty rect (should draw nothing).
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fillRectFiltered(canvas, bounds, pictureSourceEmptyRect);
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canvas->translate(SkIntToScalar(100), 0);
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canvas->restore();
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// Draw the picture scaled
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canvas->translate(0, SkIntToScalar(100));
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canvas->scale(200 / srcRect.width(), 200 / srcRect.height());
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canvas->translate(-srcRect.fLeft, -srcRect.fTop);
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fillRectFiltered(canvas, srcRect, pictureSource);
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// Draw the picture scaled, but rasterized at original resolution
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canvas->translate(srcRect.width(), 0);
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fillRectFiltered(canvas, srcRect, pictureSourceResampled);
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// Draw the picture scaled, pixelated
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canvas->translate(srcRect.width(), 0);
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fillRectFiltered(canvas, srcRect, pictureSourcePixelated);
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}
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}
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private:
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SkAutoTUnref<SkPicture> fPicture;
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typedef GM INHERITED;
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};
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///////////////////////////////////////////////////////////////////////////////
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DEF_GM( return new PictureImageFilterGM; )
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