77b5cad3ef
bug:16140822 bug:16566746 This allows background drawables to alter the opacity of a shadow being cast with their own alpha values. Change-Id: I49698cc7c1bf4b2b55ffe2f82899543ca62bc61c
123 lines
2.9 KiB
C++
123 lines
2.9 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 OUTLINE_H
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#define OUTLINE_H
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#include <SkPath.h>
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#include "Rect.h"
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namespace android {
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namespace uirenderer {
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class Outline {
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public:
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Outline()
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: mShouldClip(false)
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, mType(kOutlineType_None)
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, mRadius(0)
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, mAlpha(0.0f) {}
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void setRoundRect(int left, int top, int right, int bottom, float radius, float alpha) {
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mType = kOutlineType_RoundRect;
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mBounds.set(left, top, right, bottom);
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mRadius = radius;
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mPath.reset();
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mPath.addRoundRect(SkRect::MakeLTRB(left, top, right, bottom),
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radius, radius);
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mAlpha = alpha;
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}
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void setConvexPath(const SkPath* outline, float alpha) {
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if (!outline) {
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setEmpty();
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return;
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}
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mType = kOutlineType_ConvexPath;
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mPath = *outline;
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mBounds.set(outline->getBounds());
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mAlpha = alpha;
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}
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void setEmpty() {
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mType = kOutlineType_Empty;
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mPath.reset();
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mAlpha = 0.0f;
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}
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void setNone() {
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mType = kOutlineType_None;
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mPath.reset();
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mAlpha = 0.0f;
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}
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bool isEmpty() const {
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return mType == kOutlineType_Empty;
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}
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float getAlpha() const {
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return mAlpha;
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}
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void setShouldClip(bool clip) {
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mShouldClip = clip;
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}
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bool getShouldClip() const {
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return mShouldClip;
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}
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bool willClip() const {
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// only round rect outlines can be used for clipping
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return mShouldClip && (mType == kOutlineType_RoundRect);
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}
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bool getAsRoundRect(Rect* outRect, float* outRadius) const {
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if (mType == kOutlineType_RoundRect) {
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outRect->set(mBounds);
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*outRadius = mRadius;
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return true;
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}
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return false;
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}
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const SkPath* getPath() const {
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if (mType == kOutlineType_None || mType == kOutlineType_Empty) return NULL;
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return &mPath;
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}
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private:
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enum OutlineType {
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kOutlineType_None = 0,
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kOutlineType_Empty = 1,
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kOutlineType_ConvexPath = 2,
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kOutlineType_RoundRect = 3
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};
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bool mShouldClip;
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OutlineType mType;
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Rect mBounds;
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float mRadius;
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float mAlpha;
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SkPath mPath;
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};
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} /* namespace uirenderer */
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} /* namespace android */
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#endif /* OUTLINE_H */
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