epoger@google.com | ec3ed6a | 2011-07-28 14:26:00 +0000 | [diff] [blame] | 1 | |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 2 | /* |
epoger@google.com | ec3ed6a | 2011-07-28 14:26:00 +0000 | [diff] [blame] | 3 | * Copyright 2008 The Android Open Source Project |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 4 | * |
epoger@google.com | ec3ed6a | 2011-07-28 14:26:00 +0000 | [diff] [blame] | 5 | * Use of this source code is governed by a BSD-style license that can be |
| 6 | * found in the LICENSE file. |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 7 | */ |
| 8 | |
epoger@google.com | ec3ed6a | 2011-07-28 14:26:00 +0000 | [diff] [blame] | 9 | |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 10 | #ifndef SkBlurDrawLooper_DEFINED |
| 11 | #define SkBlurDrawLooper_DEFINED |
| 12 | |
| 13 | #include "SkDrawLooper.h" |
| 14 | #include "SkColor.h" |
| 15 | |
| 16 | class SkMaskFilter; |
senorblanco@chromium.org | 4868e6b | 2011-02-18 19:03:01 +0000 | [diff] [blame] | 17 | class SkColorFilter; |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 18 | |
| 19 | /** \class SkBlurDrawLooper |
| 20 | This class draws a shadow of the object (possibly offset), and then draws |
| 21 | the original object in its original position. |
| 22 | should there be an option to just draw the shadow/blur layer? webkit? |
| 23 | */ |
ctguil@chromium.org | 7ffb1b2 | 2011-03-15 21:27:08 +0000 | [diff] [blame] | 24 | class SK_API SkBlurDrawLooper : public SkDrawLooper { |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 25 | public: |
senorblanco@chromium.org | 038aff6 | 2010-12-06 23:45:58 +0000 | [diff] [blame] | 26 | enum BlurFlags { |
| 27 | kNone_BlurFlag = 0x00, |
| 28 | /** |
| 29 | The blur layer's dx/dy/radius aren't affected by the canvas |
| 30 | transform. |
| 31 | */ |
senorblanco@chromium.org | 4868e6b | 2011-02-18 19:03:01 +0000 | [diff] [blame] | 32 | kIgnoreTransform_BlurFlag = 0x01, |
| 33 | kOverrideColor_BlurFlag = 0x02, |
| 34 | kHighQuality_BlurFlag = 0x04, |
senorblanco@chromium.org | 038aff6 | 2010-12-06 23:45:58 +0000 | [diff] [blame] | 35 | /** mask for all blur flags */ |
senorblanco@chromium.org | 4868e6b | 2011-02-18 19:03:01 +0000 | [diff] [blame] | 36 | kAll_BlurFlag = 0x07 |
senorblanco@chromium.org | 038aff6 | 2010-12-06 23:45:58 +0000 | [diff] [blame] | 37 | }; |
| 38 | |
| 39 | SkBlurDrawLooper(SkScalar radius, SkScalar dx, SkScalar dy, SkColor color, |
| 40 | uint32_t flags = kNone_BlurFlag); |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 41 | virtual ~SkBlurDrawLooper(); |
| 42 | |
| 43 | // overrides from SkDrawLooper |
reed@google.com | 4e2b3d3 | 2011-04-07 14:18:59 +0000 | [diff] [blame] | 44 | virtual void init(SkCanvas*); |
| 45 | virtual bool next(SkCanvas*, SkPaint* paint); |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 46 | |
djsollen@google.com | ba28d03 | 2012-03-26 17:57:35 +0000 | [diff] [blame] | 47 | SK_DECLARE_PUBLIC_FLATTENABLE_DESERIALIZATION_PROCS(SkBlurDrawLooper) |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 48 | |
| 49 | protected: |
| 50 | SkBlurDrawLooper(SkFlattenableReadBuffer&); |
| 51 | // overrides from SkFlattenable |
| 52 | virtual void flatten(SkFlattenableWriteBuffer& ); |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 53 | |
| 54 | private: |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 55 | SkMaskFilter* fBlur; |
senorblanco@chromium.org | 4868e6b | 2011-02-18 19:03:01 +0000 | [diff] [blame] | 56 | SkColorFilter* fColorFilter; |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 57 | SkScalar fDx, fDy; |
| 58 | SkColor fBlurColor; |
senorblanco@chromium.org | 038aff6 | 2010-12-06 23:45:58 +0000 | [diff] [blame] | 59 | uint32_t fBlurFlags; |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 60 | |
| 61 | enum State { |
| 62 | kBeforeEdge, |
| 63 | kAfterEdge, |
| 64 | kDone |
| 65 | }; |
| 66 | State fState; |
| 67 | |
| 68 | typedef SkDrawLooper INHERITED; |
| 69 | }; |
| 70 | |
| 71 | #endif |