senorblanco@chromium.org | a612d4c | 2014-01-15 04:49:18 +0000 | [diff] [blame] | 1 | /* |
| 2 | * Copyright 2013 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 | |
| 8 | #include "gm.h" |
commit-bot@chromium.org | b659333 | 2014-03-21 16:19:28 +0000 | [diff] [blame] | 9 | #include "SkBitmapDevice.h" |
| 10 | #include "SkBitmapSource.h" |
senorblanco@chromium.org | a612d4c | 2014-01-15 04:49:18 +0000 | [diff] [blame] | 11 | #include "SkColor.h" |
senorblanco@chromium.org | fd0ec2c | 2014-03-25 17:35:10 +0000 | [diff] [blame] | 12 | #include "SkMatrixImageFilter.h" |
commit-bot@chromium.org | b659333 | 2014-03-21 16:19:28 +0000 | [diff] [blame] | 13 | #include "SkRefCnt.h" |
senorblanco@chromium.org | a612d4c | 2014-01-15 04:49:18 +0000 | [diff] [blame] | 14 | |
| 15 | namespace skiagm { |
| 16 | |
| 17 | class ResizeGM : public GM { |
| 18 | public: |
| 19 | ResizeGM() { |
| 20 | this->setBGColor(0x00000000); |
| 21 | } |
| 22 | |
| 23 | protected: |
| 24 | virtual SkString onShortName() { |
| 25 | return SkString("resizeimagefilter"); |
| 26 | } |
| 27 | |
| 28 | void draw(SkCanvas* canvas, |
| 29 | const SkRect& rect, |
| 30 | const SkSize& deviceSize, |
commit-bot@chromium.org | b659333 | 2014-03-21 16:19:28 +0000 | [diff] [blame] | 31 | SkPaint::FilterLevel filterLevel, |
| 32 | SkImageFilter* input = NULL) { |
senorblanco@chromium.org | a612d4c | 2014-01-15 04:49:18 +0000 | [diff] [blame] | 33 | SkRect dstRect; |
| 34 | canvas->getTotalMatrix().mapRect(&dstRect, rect); |
| 35 | canvas->save(); |
| 36 | SkScalar deviceScaleX = SkScalarDiv(deviceSize.width(), dstRect.width()); |
| 37 | SkScalar deviceScaleY = SkScalarDiv(deviceSize.height(), dstRect.height()); |
| 38 | canvas->translate(rect.x(), rect.y()); |
| 39 | canvas->scale(deviceScaleX, deviceScaleY); |
| 40 | canvas->translate(-rect.x(), -rect.y()); |
senorblanco@chromium.org | fd0ec2c | 2014-03-25 17:35:10 +0000 | [diff] [blame] | 41 | SkMatrix matrix; |
| 42 | matrix.setScale(SkScalarInvert(deviceScaleX), |
| 43 | SkScalarInvert(deviceScaleY)); |
senorblanco@chromium.org | a612d4c | 2014-01-15 04:49:18 +0000 | [diff] [blame] | 44 | SkAutoTUnref<SkImageFilter> imageFilter( |
senorblanco@chromium.org | fd0ec2c | 2014-03-25 17:35:10 +0000 | [diff] [blame] | 45 | SkMatrixImageFilter::Create(matrix, filterLevel, input)); |
senorblanco@chromium.org | a612d4c | 2014-01-15 04:49:18 +0000 | [diff] [blame] | 46 | SkPaint filteredPaint; |
| 47 | filteredPaint.setImageFilter(imageFilter.get()); |
| 48 | canvas->saveLayer(&rect, &filteredPaint); |
| 49 | SkPaint paint; |
| 50 | paint.setColor(0xFF00FF00); |
| 51 | SkRect ovalRect = rect; |
| 52 | ovalRect.inset(SkIntToScalar(4), SkIntToScalar(4)); |
| 53 | canvas->drawOval(ovalRect, paint); |
| 54 | canvas->restore(); // for saveLayer |
| 55 | canvas->restore(); |
| 56 | } |
| 57 | |
| 58 | virtual SkISize onISize() { |
tfarina | f539318 | 2014-06-09 23:59:03 -0700 | [diff] [blame] | 59 | return SkISize::Make(520, 100); |
senorblanco@chromium.org | a612d4c | 2014-01-15 04:49:18 +0000 | [diff] [blame] | 60 | } |
| 61 | |
| 62 | virtual void onDraw(SkCanvas* canvas) { |
| 63 | canvas->clear(0x00000000); |
| 64 | |
| 65 | SkRect srcRect = SkRect::MakeWH(96, 96); |
| 66 | |
| 67 | SkSize deviceSize = SkSize::Make(16, 16); |
| 68 | draw(canvas, |
| 69 | srcRect, |
| 70 | deviceSize, |
| 71 | SkPaint::kNone_FilterLevel); |
| 72 | |
| 73 | canvas->translate(srcRect.width() + SkIntToScalar(10), 0); |
| 74 | draw(canvas, |
| 75 | srcRect, |
| 76 | deviceSize, |
| 77 | SkPaint::kLow_FilterLevel); |
| 78 | |
| 79 | canvas->translate(srcRect.width() + SkIntToScalar(10), 0); |
| 80 | draw(canvas, |
| 81 | srcRect, |
| 82 | deviceSize, |
| 83 | SkPaint::kMedium_FilterLevel); |
| 84 | |
| 85 | canvas->translate(srcRect.width() + SkIntToScalar(10), 0); |
| 86 | draw(canvas, |
| 87 | srcRect, |
| 88 | deviceSize, |
| 89 | SkPaint::kHigh_FilterLevel); |
commit-bot@chromium.org | b659333 | 2014-03-21 16:19:28 +0000 | [diff] [blame] | 90 | |
| 91 | SkBitmap bitmap; |
| 92 | bitmap.allocN32Pixels(16, 16); |
| 93 | bitmap.eraseARGB(0x00, 0x00, 0x00, 0x00); |
| 94 | { |
| 95 | SkBitmapDevice bitmapDevice(bitmap); |
| 96 | SkCanvas bitmapCanvas(&bitmapDevice); |
| 97 | SkPaint paint; |
| 98 | paint.setColor(0xFF00FF00); |
| 99 | SkRect ovalRect = SkRect::MakeWH(16, 16); |
| 100 | ovalRect.inset(SkScalarDiv(2.0f, 3.0f), SkScalarDiv(2.0f, 3.0f)); |
| 101 | bitmapCanvas.drawOval(ovalRect, paint); |
| 102 | } |
| 103 | SkRect inRect = SkRect::MakeXYWH(-4, -4, 20, 20); |
| 104 | SkRect outRect = SkRect::MakeXYWH(-24, -24, 120, 120); |
| 105 | SkAutoTUnref<SkBitmapSource> source(SkBitmapSource::Create(bitmap, inRect, outRect)); |
| 106 | canvas->translate(srcRect.width() + SkIntToScalar(10), 0); |
| 107 | draw(canvas, |
| 108 | srcRect, |
| 109 | deviceSize, |
| 110 | SkPaint::kHigh_FilterLevel, |
| 111 | source.get()); |
senorblanco@chromium.org | a612d4c | 2014-01-15 04:49:18 +0000 | [diff] [blame] | 112 | } |
| 113 | |
| 114 | private: |
| 115 | typedef GM INHERITED; |
| 116 | }; |
| 117 | |
| 118 | ////////////////////////////////////////////////////////////////////////////// |
| 119 | |
| 120 | static GM* MyFactory(void*) { return new ResizeGM; } |
| 121 | static GMRegistry reg(MyFactory); |
| 122 | |
| 123 | } |