gfx/skia/trunk/src/core/SkPaintPriv.cpp@deefc01c0e14 (annotated)
gfx/skia/trunk/src/core/SkPaintPriv.cpp
Thu, 15 Jan 2015 21:03:48 +0100
- author
- Michael Schloh von Bennewitz <michael@schloh.com>
- date
- Thu, 15 Jan 2015 21:03:48 +0100
- branch
- TOR_BUG_9701
- changeset 11
- deefc01c0e14
- permissions
- -rw-r--r--
Integrate friendly tips from Tor colleagues to make (or not) 4.5 alpha 3;
This includes removal of overloaded (but unused) methods, and addition of
a overlooked call to DataStruct::SetData(nsISupports, uint32_t, bool.)
| michael@0 | 1 | /* |
| michael@0 | 2 | * Copyright 2013 Google Inc. |
| michael@0 | 3 | * |
| michael@0 | 4 | * Use of this source code is governed by a BSD-style license that can be |
| michael@0 | 5 | * found in the LICENSE file. |
| michael@0 | 6 | */ |
| michael@0 | 7 | |
| michael@0 | 8 | #include "SkPaintPriv.h" |
| michael@0 | 9 | |
| michael@0 | 10 | #include "SkBitmap.h" |
| michael@0 | 11 | #include "SkColorFilter.h" |
| michael@0 | 12 | #include "SkPaint.h" |
| michael@0 | 13 | #include "SkShader.h" |
| michael@0 | 14 | |
| michael@0 | 15 | bool isPaintOpaque(const SkPaint* paint, |
| michael@0 | 16 | const SkBitmap* bmpReplacesShader) { |
| michael@0 | 17 | // TODO: SkXfermode should have a virtual isOpaque method, which would |
| michael@0 | 18 | // make it possible to test modes that do not have a Coeff representation. |
| michael@0 | 19 | |
| michael@0 | 20 | if (!paint) { |
| michael@0 | 21 | return bmpReplacesShader ? bmpReplacesShader->isOpaque() : true; |
| michael@0 | 22 | } |
| michael@0 | 23 | |
| michael@0 | 24 | SkXfermode::Coeff srcCoeff, dstCoeff; |
| michael@0 | 25 | if (SkXfermode::AsCoeff(paint->getXfermode(), &srcCoeff, &dstCoeff)){ |
| michael@0 | 26 | if (SkXfermode::kDA_Coeff == srcCoeff || SkXfermode::kDC_Coeff == srcCoeff || |
| michael@0 | 27 | SkXfermode::kIDA_Coeff == srcCoeff || SkXfermode::kIDC_Coeff == srcCoeff) { |
| michael@0 | 28 | return false; |
| michael@0 | 29 | } |
| michael@0 | 30 | switch (dstCoeff) { |
| michael@0 | 31 | case SkXfermode::kZero_Coeff: |
| michael@0 | 32 | return true; |
| michael@0 | 33 | case SkXfermode::kISA_Coeff: |
| michael@0 | 34 | if (paint->getAlpha() != 255) { |
| michael@0 | 35 | break; |
| michael@0 | 36 | } |
| michael@0 | 37 | if (bmpReplacesShader) { |
| michael@0 | 38 | if (!bmpReplacesShader->isOpaque()) { |
| michael@0 | 39 | break; |
| michael@0 | 40 | } |
| michael@0 | 41 | } else if (paint->getShader() && !paint->getShader()->isOpaque()) { |
| michael@0 | 42 | break; |
| michael@0 | 43 | } |
| michael@0 | 44 | if (paint->getColorFilter() && |
| michael@0 | 45 | ((paint->getColorFilter()->getFlags() & |
| michael@0 | 46 | SkColorFilter::kAlphaUnchanged_Flag) == 0)) { |
| michael@0 | 47 | break; |
| michael@0 | 48 | } |
| michael@0 | 49 | return true; |
| michael@0 | 50 | case SkXfermode::kSA_Coeff: |
| michael@0 | 51 | if (paint->getAlpha() != 0) { |
| michael@0 | 52 | break; |
| michael@0 | 53 | } |
| michael@0 | 54 | if (paint->getColorFilter() && |
| michael@0 | 55 | ((paint->getColorFilter()->getFlags() & |
| michael@0 | 56 | SkColorFilter::kAlphaUnchanged_Flag) == 0)) { |
| michael@0 | 57 | break; |
| michael@0 | 58 | } |
| michael@0 | 59 | return true; |
| michael@0 | 60 | case SkXfermode::kSC_Coeff: |
| michael@0 | 61 | if (paint->getColor() != 0) { // all components must be 0 |
| michael@0 | 62 | break; |
| michael@0 | 63 | } |
| michael@0 | 64 | if (bmpReplacesShader || paint->getShader()) { |
| michael@0 | 65 | break; |
| michael@0 | 66 | } |
| michael@0 | 67 | if (paint->getColorFilter() && ( |
| michael@0 | 68 | (paint->getColorFilter()->getFlags() & |
| michael@0 | 69 | SkColorFilter::kAlphaUnchanged_Flag) == 0)) { |
| michael@0 | 70 | break; |
| michael@0 | 71 | } |
| michael@0 | 72 | return true; |
| michael@0 | 73 | default: |
| michael@0 | 74 | break; |
| michael@0 | 75 | } |
| michael@0 | 76 | } |
| michael@0 | 77 | return false; |
| michael@0 | 78 | } |
