| /* |
| * Copyright 2013 Google Inc. |
| * |
| * Use of this source code is governed by a BSD-style license that can be |
| * found in the LICENSE file. |
| */ |
| |
| #ifndef SkAlphaThresholdFilter_DEFINED |
| #define SkAlphaThresholdFilter_DEFINED |
| |
| #include "SkRegion.h" |
| #include "SkImageFilter.h" |
| |
| class SK_API SkAlphaThresholdFilter { |
| public: |
| /** |
| * Creates an image filter that samples a region. If the sample is inside the |
| * region the alpha of the image is boosted up to a threshold value. If it is |
| * outside the region then the alpha is decreased to the threshold value. |
| * The 0,0 point of the region corresponds to the upper left corner of the |
| * source image. |
| */ |
| static SkImageFilter* Create(const SkRegion& region, SkScalar innerThreshold, SkScalar outerThreshold); |
| }; |
| |
| #endif |