diff options
author | fmalita <fmalita@chromium.org> | 2015-09-14 13:31:18 -0700 |
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committer | Commit bot <commit-bot@chromium.org> | 2015-09-14 13:31:18 -0700 |
commit | cd56f812e09fdd8f8322c5c28cbc4423a74b9a0a (patch) | |
tree | 7b4b54c3a4f7b89653635820d28026971b9b076a /gm | |
parent | 506c802a3dd3b6dc8a172621ff2a1f9bda202a13 (diff) |
SkImageSource
Blink is migrating away from SkBitmaps, so we need an SkImage-based
SkImageFilter source. This is pretty much a 1-1 equivalent of
SkBitmapSource.
To avoid duplication, relocate the SkImage deserialization logic
from SkPictureData to SkReadBuffer.
R=reed@google.com,robertphillips@google.com,senorblanco@chromium.org
Review URL: https://codereview.chromium.org/1343703005
Diffstat (limited to 'gm')
-rw-r--r-- | gm/imagesource.cpp | 80 |
1 files changed, 80 insertions, 0 deletions
diff --git a/gm/imagesource.cpp b/gm/imagesource.cpp new file mode 100644 index 0000000000..f4574d267c --- /dev/null +++ b/gm/imagesource.cpp @@ -0,0 +1,80 @@ +/* + * 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.h" + +#include "SkImage.h" +#include "SkImageSource.h" + +// This GM exercises the SkImageSource ImageFilter class. + +class ImageSourceGM : public skiagm::GM { +public: + ImageSourceGM() { } + +protected: + SkString onShortName() override { + return SkString("imagesource"); + } + + SkISize onISize() override { return SkISize::Make(500, 150); } + + void onOnceBeforeDraw() override { + SkBitmap bm = sk_tool_utils::create_string_bitmap(100, 100, 0xFFFFFFFF, 20, 70, 96, "e"); + fImage.reset(SkImage::NewFromBitmap(bm)); + } + + static void FillRectFiltered(SkCanvas* canvas, const SkRect& clipRect, SkImageFilter* filter) { + SkPaint paint; + paint.setImageFilter(filter); + canvas->save(); + canvas->clipRect(clipRect); + canvas->drawPaint(paint); + canvas->restore(); + } + + void onDraw(SkCanvas* canvas) override { + canvas->clear(SK_ColorBLACK); + { + SkRect srcRect = SkRect::MakeXYWH(20, 20, 30, 30); + SkRect dstRect = SkRect::MakeXYWH(0, 10, 60, 60); + SkRect clipRect = SkRect::MakeXYWH(0, 0, 100, 100); + SkRect bounds = SkRect::MakeIWH(fImage->width(), fImage->height()); + SkAutoTUnref<SkImageFilter> imageSource(SkImageSource::Create(fImage)); + SkAutoTUnref<SkImageFilter> imageSourceSrcRect( + SkImageSource::Create(fImage, srcRect, srcRect, kHigh_SkFilterQuality)); + SkAutoTUnref<SkImageFilter> imageSourceSrcRectDstRect( + SkImageSource::Create(fImage, srcRect, dstRect, kHigh_SkFilterQuality)); + SkAutoTUnref<SkImageFilter> imageSourceDstRectOnly( + SkImageSource::Create(fImage, bounds, dstRect, kHigh_SkFilterQuality)); + + // Draw an unscaled bitmap. + FillRectFiltered(canvas, clipRect, imageSource); + canvas->translate(SkIntToScalar(100), 0); + + // Draw an unscaled subset of the source bitmap (srcRect -> srcRect). + FillRectFiltered(canvas, clipRect, imageSourceSrcRect); + canvas->translate(SkIntToScalar(100), 0); + + // Draw a subset of the bitmap scaled to a destination rect (srcRect -> dstRect). + FillRectFiltered(canvas, clipRect, imageSourceSrcRectDstRect); + canvas->translate(SkIntToScalar(100), 0); + + // Draw the entire bitmap scaled to a destination rect (bounds -> dstRect). + FillRectFiltered(canvas, clipRect, imageSourceDstRectOnly); + canvas->translate(SkIntToScalar(100), 0); + } + } + +private: + SkAutoTUnref<SkImage> fImage; + typedef GM INHERITED; +}; + +/////////////////////////////////////////////////////////////////////////////// + +DEF_GM( return new ImageSourceGM; ) |