Index: skia/effects/SkEmbossMaskFilter.cpp |
=================================================================== |
--- skia/effects/SkEmbossMaskFilter.cpp (revision 16859) |
+++ skia/effects/SkEmbossMaskFilter.cpp (working copy) |
@@ -1,143 +0,0 @@ |
-/* libs/graphics/effects/SkEmbossMaskFilter.cpp |
-** |
-** Copyright 2006, The Android Open Source Project |
-** |
-** Licensed under the Apache License, Version 2.0 (the "License"); |
-** you may not use this file except in compliance with the License. |
-** You may obtain a copy of the License at |
-** |
-** http://www.apache.org/licenses/LICENSE-2.0 |
-** |
-** Unless required by applicable law or agreed to in writing, software |
-** distributed under the License is distributed on an "AS IS" BASIS, |
-** WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
-** See the License for the specific language governing permissions and |
-** limitations under the License. |
-*/ |
- |
-#include "SkEmbossMaskFilter.h" |
-#include "SkBlurMaskFilter.h" |
-#include "SkBlurMask.h" |
-#include "SkEmbossMask.h" |
-#include "SkBuffer.h" |
- |
-SkMaskFilter* SkBlurMaskFilter::CreateEmboss(const SkScalar direction[3], |
- SkScalar ambient, SkScalar specular, |
- SkScalar blurRadius) |
-{ |
- if (direction == NULL) |
- return NULL; |
- |
- // ambient should be 0...1 as a scalar |
- int am = SkScalarToFixed(ambient) >> 8; |
- if (am < 0) am = 0; |
- else if (am > 0xFF) am = 0xFF; |
- |
- // specular should be 0..15.99 as a scalar |
- int sp = SkScalarToFixed(specular) >> 12; |
- if (sp < 0) sp = 0; |
- else if (sp > 0xFF) sp = 0xFF; |
- |
- SkEmbossMaskFilter::Light light; |
- |
- memcpy(light.fDirection, direction, sizeof(light.fDirection)); |
- light.fAmbient = SkToU8(am); |
- light.fSpecular = SkToU8(sp); |
- |
- return SkNEW_ARGS(SkEmbossMaskFilter, (light, blurRadius)); |
-} |
- |
-///////////////////////////////////////////////////////////////////////////////////////////// |
- |
-static void normalize(SkScalar v[3]) |
-{ |
- SkScalar mag = SkScalarSquare(v[0]) + SkScalarSquare(v[1]) + SkScalarSquare(v[2]); |
- mag = SkScalarSqrt(mag); |
- |
- for (int i = 0; i < 3; i++) |
- v[i] = SkScalarDiv(v[i], mag); |
-} |
- |
-SkEmbossMaskFilter::SkEmbossMaskFilter(const Light& light, SkScalar blurRadius) |
- : fLight(light), fBlurRadius(blurRadius) |
-{ |
- normalize(fLight.fDirection); |
-} |
- |
-SkMask::Format SkEmbossMaskFilter::getFormat() |
-{ |
- return SkMask::k3D_Format; |
-} |
- |
-bool SkEmbossMaskFilter::filterMask(SkMask* dst, const SkMask& src, const SkMatrix& matrix, SkIPoint* margin) |
-{ |
- SkScalar radius = matrix.mapRadius(fBlurRadius); |
- |
- if (!SkBlurMask::Blur(dst, src, radius, SkBlurMask::kInner_Style)) |
- return false; |
- |
- dst->fFormat = SkMask::k3D_Format; |
- if (margin) |
- margin->set(SkScalarCeil(radius), SkScalarCeil(radius)); |
- |
- if (src.fImage == NULL) |
- return true; |
- |
- // create a larger buffer for the other two channels (should force fBlur to do this for us) |
- |
- { |
- uint8_t* alphaPlane = dst->fImage; |
- size_t planeSize = dst->computeImageSize(); |
- if (0 == planeSize) { |
- return false; // too big to allocate, abort |
- } |
- dst->fImage = SkMask::AllocImage(planeSize * 3); |
- memcpy(dst->fImage, alphaPlane, planeSize); |
- SkMask::FreeImage(alphaPlane); |
- } |
- |
- // run the light direction through the matrix... |
- Light light = fLight; |
- matrix.mapVectors((SkVector*)(void*)light.fDirection, (SkVector*)(void*)fLight.fDirection, 1); |
- |
- // now restore the length of the XY component |
- // cast to SkVector so we can call setLength (this double cast silences alias warnings) |
- SkVector* vec = (SkVector*)(void*)light.fDirection; |
- vec->setLength(light.fDirection[0], |
- light.fDirection[1], |
- SkPoint::Length(fLight.fDirection[0], fLight.fDirection[1])); |
- |
- SkEmbossMask::Emboss(dst, light); |
- |
- // restore original alpha |
- memcpy(dst->fImage, src.fImage, src.computeImageSize()); |
- |
- return true; |
-} |
- |
-SkFlattenable* SkEmbossMaskFilter::CreateProc(SkFlattenableReadBuffer& buffer) |
-{ |
- return SkNEW_ARGS(SkEmbossMaskFilter, (buffer)); |
-} |
- |
-SkFlattenable::Factory SkEmbossMaskFilter::getFactory() |
-{ |
- return CreateProc; |
-} |
- |
-SkEmbossMaskFilter::SkEmbossMaskFilter(SkFlattenableReadBuffer& buffer) : SkMaskFilter(buffer) |
-{ |
- buffer.read(&fLight, sizeof(fLight)); |
- SkASSERT(fLight.fPad == 0); // for the font-cache lookup to be clean |
- fBlurRadius = buffer.readScalar(); |
-} |
- |
-void SkEmbossMaskFilter::flatten(SkFlattenableWriteBuffer& buffer) |
-{ |
- this->INHERITED::flatten(buffer); |
- |
- fLight.fPad = 0; // for the font-cache lookup to be clean |
- buffer.writeMul4(&fLight, sizeof(fLight)); |
- buffer.writeScalar(fBlurRadius); |
-} |
- |