senorblanco | 5878dbd | 2016-05-19 14:50:29 -0700 | [diff] [blame] | 1 | /* |
| 2 | * Copyright 2016 Google Inc. |
| 3 | * |
| 4 | * Use of this source code is governed by a BSD-style license that can be |
| 5 | * found in the LICENSE file. |
| 6 | */ |
| 7 | |
Mike Klein | c0bd9f9 | 2019-04-23 12:05:21 -0500 | [diff] [blame] | 8 | #include "gm/gm.h" |
Ben Wagner | 7fde8e1 | 2019-05-01 17:28:53 -0400 | [diff] [blame] | 9 | #include "include/core/SkBlendMode.h" |
Mike Klein | c0bd9f9 | 2019-04-23 12:05:21 -0500 | [diff] [blame] | 10 | #include "include/core/SkCanvas.h" |
Ben Wagner | 7fde8e1 | 2019-05-01 17:28:53 -0400 | [diff] [blame] | 11 | #include "include/core/SkColor.h" |
Mike Klein | c0bd9f9 | 2019-04-23 12:05:21 -0500 | [diff] [blame] | 12 | #include "include/core/SkColorFilter.h" |
Ben Wagner | 7fde8e1 | 2019-05-01 17:28:53 -0400 | [diff] [blame] | 13 | #include "include/core/SkImage.h" |
| 14 | #include "include/core/SkImageFilter.h" |
| 15 | #include "include/core/SkImageInfo.h" |
| 16 | #include "include/core/SkPaint.h" |
| 17 | #include "include/core/SkPoint.h" |
| 18 | #include "include/core/SkRect.h" |
| 19 | #include "include/core/SkRefCnt.h" |
| 20 | #include "include/core/SkScalar.h" |
| 21 | #include "include/core/SkSize.h" |
| 22 | #include "include/core/SkString.h" |
Mike Klein | c0bd9f9 | 2019-04-23 12:05:21 -0500 | [diff] [blame] | 23 | #include "include/core/SkSurface.h" |
Ben Wagner | 7fde8e1 | 2019-05-01 17:28:53 -0400 | [diff] [blame] | 24 | #include "include/core/SkTypes.h" |
Mike Klein | c0bd9f9 | 2019-04-23 12:05:21 -0500 | [diff] [blame] | 25 | #include "include/effects/SkBlurImageFilter.h" |
| 26 | #include "include/effects/SkColorFilterImageFilter.h" |
| 27 | #include "include/effects/SkDropShadowImageFilter.h" |
| 28 | #include "tools/ToolUtils.h" |
senorblanco | 5878dbd | 2016-05-19 14:50:29 -0700 | [diff] [blame] | 29 | |
Ben Wagner | 7fde8e1 | 2019-05-01 17:28:53 -0400 | [diff] [blame] | 30 | #include <utility> |
| 31 | |
senorblanco | 5878dbd | 2016-05-19 14:50:29 -0700 | [diff] [blame] | 32 | /////////////////////////////////////////////////////////////////////////////// |
| 33 | |
| 34 | static void show_bounds(SkCanvas* canvas, const SkIRect& subset, const SkIRect& clip) { |
| 35 | SkIRect rects[] { subset, clip }; |
| 36 | SkColor colors[] { SK_ColorRED, SK_ColorBLUE }; |
| 37 | |
| 38 | SkPaint paint; |
| 39 | paint.setStyle(SkPaint::kStroke_Style); |
| 40 | |
| 41 | for (size_t i = 0; i < SK_ARRAY_COUNT(rects); ++i) { |
| 42 | paint.setColor(colors[i]); |
| 43 | canvas->drawRect(SkRect::Make(rects[i]), paint); |
| 44 | } |
| 45 | } |
| 46 | |
| 47 | // In this GM, we're going to feed the inner portion of a 100x100 checkboard |
| 48 | // (i.e., strip off a 25-wide border) through the makeWithFilter method. |
| 49 | // We'll then draw the appropriate subset of the result to the screen at the |
| 50 | // given offset. |
| 51 | class ImageMakeWithFilterGM : public skiagm::GM { |
| 52 | public: |
| 53 | ImageMakeWithFilterGM () {} |
| 54 | |
| 55 | protected: |
| 56 | SkString onShortName() override { |
| 57 | return SkString("imagemakewithfilter"); |
| 58 | } |
| 59 | |
senorblanco | 56f7dfe | 2016-05-20 07:59:09 -0700 | [diff] [blame] | 60 | SkISize onISize() override { return SkISize::Make(440, 530); } |
senorblanco | 5878dbd | 2016-05-19 14:50:29 -0700 | [diff] [blame] | 61 | |
| 62 | void onDraw(SkCanvas* canvas) override { |
Mike Reed | b286bc2 | 2019-04-08 16:23:20 -0400 | [diff] [blame] | 63 | auto cf = SkColorFilters::Blend(SK_ColorGREEN, SkBlendMode::kSrc); |
senorblanco | 5878dbd | 2016-05-19 14:50:29 -0700 | [diff] [blame] | 64 | sk_sp<SkImageFilter> filters[] = { |
| 65 | SkColorFilterImageFilter::Make(std::move(cf), nullptr), |
| 66 | SkBlurImageFilter::Make(2.0f, 2.0f, nullptr), |
| 67 | SkDropShadowImageFilter::Make( |
| 68 | 10.0f, 5.0f, 3.0f, 3.0f, SK_ColorBLUE, |
| 69 | SkDropShadowImageFilter::kDrawShadowAndForeground_ShadowMode, |
| 70 | nullptr), |
| 71 | }; |
| 72 | |
| 73 | SkIRect clipBounds[] { |
| 74 | { -20, -20, 100, 100 }, |
| 75 | { 0, 0, 75, 75 }, |
| 76 | { 20, 20, 100, 100 }, |
| 77 | { -20, -20, 50, 50 }, |
| 78 | { 20, 20, 50, 50 }, |
| 79 | }; |
| 80 | |
| 81 | SkImageInfo info = SkImageInfo::MakeN32(100, 100, kPremul_SkAlphaType); |
| 82 | SkScalar MARGIN = SkIntToScalar(40); |
| 83 | SkScalar DX = info.width() + MARGIN; |
| 84 | SkScalar DY = info.height() + MARGIN; |
| 85 | |
| 86 | canvas->translate(MARGIN, MARGIN); |
| 87 | |
Mike Klein | ea3f014 | 2019-03-20 11:12:10 -0500 | [diff] [blame] | 88 | sk_sp<SkSurface> surface = ToolUtils::makeSurface(canvas, info); |
| 89 | ToolUtils::draw_checkerboard(surface->getCanvas()); |
senorblanco | 5878dbd | 2016-05-19 14:50:29 -0700 | [diff] [blame] | 90 | sk_sp<SkImage> source = surface->makeImageSnapshot(); |
| 91 | |
| 92 | for (auto clipBound : clipBounds) { |
| 93 | canvas->save(); |
| 94 | for (size_t i = 0; i < SK_ARRAY_COUNT(filters); ++i) { |
| 95 | SkIRect subset = SkIRect::MakeXYWH(25, 25, 50, 50); |
| 96 | SkIRect outSubset; |
| 97 | SkIPoint offset; |
| 98 | sk_sp<SkImage> result = source->makeWithFilter(filters[i].get(), subset, clipBound, |
| 99 | &outSubset, &offset); |
| 100 | SkASSERT(result); |
| 101 | SkASSERT(source->isTextureBacked() == result->isTextureBacked()); |
| 102 | result = result->makeSubset(outSubset); |
| 103 | canvas->drawImage(result.get(), SkIntToScalar(offset.fX), SkIntToScalar(offset.fY)); |
| 104 | show_bounds(canvas, SkIRect::MakeXYWH(offset.x(), offset.y(), outSubset.width(), |
| 105 | outSubset.height()), clipBound); |
| 106 | canvas->translate(DX, 0); |
| 107 | } |
| 108 | canvas->restore(); |
| 109 | canvas->translate(0, DY); |
| 110 | } |
| 111 | } |
| 112 | |
| 113 | private: |
| 114 | typedef GM INHERITED; |
| 115 | }; |
| 116 | DEF_GM( return new ImageMakeWithFilterGM; ) |