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Diffstat (limited to 'gm/imagefilterscropexpand.cpp')
| -rw-r--r-- | gm/imagefilterscropexpand.cpp | 170 |
1 files changed, 170 insertions, 0 deletions
diff --git a/gm/imagefilterscropexpand.cpp b/gm/imagefilterscropexpand.cpp new file mode 100644 index 0000000000..9373696773 --- /dev/null +++ b/gm/imagefilterscropexpand.cpp @@ -0,0 +1,170 @@ +/* + * Copyright 2014 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 "SkCanvas.h" +#include "SkColorFilter.h" +#include "SkColorPriv.h" +#include "SkShader.h" + +#include "SkBitmapSource.h" +#include "SkBlurImageFilter.h" +#include "SkColorMatrixFilter.h" +#include "SkDisplacementMapEffect.h" +#include "SkDropShadowImageFilter.h" +#include "SkGradientShader.h" +#include "SkMorphologyImageFilter.h" +#include "SkColorFilterImageFilter.h" +#include "SkMergeImageFilter.h" +#include "SkOffsetImageFilter.h" + +/////////////////////////////////////////////////////////////////////////////// + +class ImageFiltersCropExpandGM : public skiagm::GM { +public: + ImageFiltersCropExpandGM () {} + +protected: + + virtual SkString onShortName() { + return SkString("imagefilterscropexpand"); + } + + virtual SkISize onISize() { return SkISize::Make(570, 650); } + + void make_checkerboard(SkBitmap* bitmap) { + bitmap->allocN32Pixels(64, 64); + SkCanvas canvas(*bitmap); + canvas.clear(0xFFFF0000); + SkPaint darkPaint; + darkPaint.setColor(0xFF404040); + SkPaint lightPaint; + lightPaint.setColor(0xFFA0A0A0); + for (int y = 8; y < 48; y += 16) { + for (int x = 8; x < 48; x += 16) { + canvas.save(); + canvas.translate(SkIntToScalar(x), SkIntToScalar(y)); + canvas.drawRect(SkRect::MakeXYWH(0, 0, 8, 8), darkPaint); + canvas.drawRect(SkRect::MakeXYWH(8, 0, 8, 8), lightPaint); + canvas.drawRect(SkRect::MakeXYWH(0, 8, 8, 8), lightPaint); + canvas.drawRect(SkRect::MakeXYWH(8, 8, 8, 8), darkPaint); + canvas.restore(); + } + } + } + + void make_gradient_circle(int width, int height, SkBitmap* bitmap) { + SkScalar x = SkIntToScalar(width / 2); + SkScalar y = SkIntToScalar(height / 2); + SkScalar radius = SkMinScalar(x, y) * 0.8f; + bitmap->allocN32Pixels(width, height); + SkCanvas canvas(*bitmap); + canvas.clear(0x00000000); + SkColor colors[2]; + colors[0] = SK_ColorWHITE; + colors[1] = SK_ColorBLACK; + SkAutoTUnref<SkShader> shader( + SkGradientShader::CreateRadial(SkPoint::Make(x, y), radius, colors, NULL, 2, + SkShader::kClamp_TileMode) + ); + SkPaint paint; + paint.setShader(shader); + canvas.drawCircle(x, y, radius, paint); + } + + static void draw(SkCanvas* canvas, const SkBitmap& bitmap, const SkRect& rect, SkImageFilter* filter) { + SkPaint paint; + paint.setImageFilter(filter)->unref(); + canvas->saveLayer(&rect, &paint); + canvas->drawBitmap(bitmap, 0, 0); + canvas->restore(); + + SkPaint strokePaint; + strokePaint.setColor(0xFFFF0000); + strokePaint.setStyle(SkPaint::kStroke_Style); + canvas->drawRect(rect, strokePaint); + + canvas->translate(SkIntToScalar(80), 0); + } + + virtual void onDraw(SkCanvas* canvas) { + SkAutoTUnref<SkColorFilter> cf( + SkColorFilter::CreateModeFilter(SK_ColorBLUE, SkXfermode::kSrcIn_Mode)); + SkImageFilter::CropRect crop_rect( + SkRect::Make(SkIRect::MakeXYWH(10, 10, 44, 44)), + SkImageFilter::CropRect::kHasAll_CropEdge); + + SkBitmap gradient_circle, checkerboard; + make_gradient_circle(64, 64, &gradient_circle); + make_checkerboard(&checkerboard); + + SkAutoTUnref<SkImageFilter> gradient_circle_source( + SkBitmapSource::Create(gradient_circle)); + SkAutoTUnref<SkImageFilter> noop_cropped( + SkOffsetImageFilter::Create(0, 0, NULL, &crop_rect)); + SkScalar sk255 = SkIntToScalar(255); + SkScalar matrix[20] = { 1, 0, 0, 0, 0, + 0, 1, 0, 0, sk255, + 0, 0, 1, 0, 0, + 0, 0, 0, 0, sk255 }; + SkAutoTUnref<SkColorFilter> cf_alpha_trans(SkColorMatrixFilter::Create(matrix)); + + SkRect r = SkRect::MakeWH(SkIntToScalar(64), SkIntToScalar(64)); + SkScalar MARGIN = SkIntToScalar(12); + + SkIRect bounds; + r.roundOut(&bounds); + + SkPaint paint; + canvas->translate(MARGIN, MARGIN); + for (int outset = -15; outset <= 20; outset += 5) { + canvas->save(); + SkRect rect = crop_rect.rect(); + rect.outset(SkIntToScalar(outset), + SkIntToScalar(outset)); + SkImageFilter::CropRect big_rect(rect, SkImageFilter::CropRect::kHasAll_CropEdge); + + draw(canvas, checkerboard, rect, SkColorFilterImageFilter::Create( + cf_alpha_trans, noop_cropped.get(), &big_rect)); + + draw(canvas, checkerboard, rect, SkBlurImageFilter::Create( + 8.0f, 8.0f, noop_cropped.get(), &big_rect)); + + draw(canvas, checkerboard, rect, SkDilateImageFilter::Create( + 2, 2, noop_cropped.get(), &big_rect)); + + draw(canvas, checkerboard, rect, SkErodeImageFilter::Create( + 2, 2, noop_cropped.get(), &big_rect)); + + draw(canvas, checkerboard, rect, SkDropShadowImageFilter::Create( + SkIntToScalar(10), SkIntToScalar(10), SkIntToScalar(3), SkIntToScalar(3), + SK_ColorBLUE, noop_cropped.get(), &big_rect)); + + draw(canvas, checkerboard, rect, SkDisplacementMapEffect::Create( + SkDisplacementMapEffect::kR_ChannelSelectorType, + SkDisplacementMapEffect::kR_ChannelSelectorType, + SkIntToScalar(12), + gradient_circle_source.get(), + noop_cropped.get(), + &big_rect)); + + draw(canvas, checkerboard, rect, SkOffsetImageFilter::Create( + SkIntToScalar(-8), SkIntToScalar(16), noop_cropped.get(), &big_rect)); + + canvas->restore(); + canvas->translate(0, SkIntToScalar(80)); + } + } + +private: + typedef GM INHERITED; +}; + +/////////////////////////////////////////////////////////////////////////////// + +static skiagm::GM* MyFactory(void*) { return new ImageFiltersCropExpandGM; } +static skiagm::GMRegistry reg(MyFactory); |