1bcacfdcab
Test: No code changes, just ran through clang-format Change-Id: Id23aa4ec7eebc0446fe3a30260f33e7fd455bb8c
105 lines
3.2 KiB
C++
105 lines
3.2 KiB
C++
/*
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* Copyright (C) 2014 The Android Open Source Project
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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#ifndef PAINT_UTILS_H
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#define PAINT_UTILS_H
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#include <utils/Blur.h>
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#include <SkColorFilter.h>
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#include <SkDrawLooper.h>
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#include <SkShader.h>
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namespace android {
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namespace uirenderer {
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/**
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* Utility methods for accessing data within SkPaint, and providing defaults
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* with optional SkPaint pointers.
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*/
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class PaintUtils {
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public:
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static inline GLenum getFilter(const SkPaint* paint) {
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if (!paint || paint->getFilterQuality() != kNone_SkFilterQuality) {
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return GL_LINEAR;
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}
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return GL_NEAREST;
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}
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static bool isOpaquePaint(const SkPaint* paint) {
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if (!paint) return true; // default (paintless) behavior is SrcOver, black
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if (paint->getAlpha() != 0xFF || PaintUtils::isBlendedShader(paint->getShader()) ||
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PaintUtils::isBlendedColorFilter(paint->getColorFilter())) {
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return false;
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}
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// Only let simple srcOver / src blending modes declare opaque, since behavior is clear.
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SkBlendMode mode = paint->getBlendMode();
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return mode == SkBlendMode::kSrcOver || mode == SkBlendMode::kSrc;
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}
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static bool isBlendedShader(const SkShader* shader) {
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if (shader == nullptr) {
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return false;
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}
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return !shader->isOpaque();
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}
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static bool isBlendedColorFilter(const SkColorFilter* filter) {
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if (filter == nullptr) {
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return false;
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}
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return (filter->getFlags() & SkColorFilter::kAlphaUnchanged_Flag) == 0;
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}
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struct TextShadow {
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SkScalar radius;
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float dx;
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float dy;
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SkColor color;
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};
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static inline bool getTextShadow(const SkPaint* paint, TextShadow* textShadow) {
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SkDrawLooper::BlurShadowRec blur;
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if (paint && paint->getLooper() && paint->getLooper()->asABlurShadow(&blur)) {
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if (textShadow) {
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textShadow->radius = Blur::convertSigmaToRadius(blur.fSigma);
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textShadow->dx = blur.fOffset.fX;
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textShadow->dy = blur.fOffset.fY;
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textShadow->color = blur.fColor;
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}
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return true;
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}
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return false;
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}
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static inline bool hasTextShadow(const SkPaint* paint) { return getTextShadow(paint, nullptr); }
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static inline SkBlendMode getBlendModeDirect(const SkPaint* paint) {
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return paint ? paint->getBlendMode() : SkBlendMode::kSrcOver;
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}
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static inline int getAlphaDirect(const SkPaint* paint) {
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return paint ? paint->getAlpha() : 255;
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}
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}; // class PaintUtils
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} /* namespace uirenderer */
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} /* namespace android */
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#endif /* PAINT_UTILS_H */
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