157 lines
3.6 KiB
C++
157 lines
3.6 KiB
C++
/*
|
|
* Copyright (C) 2014 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.
|
|
*/
|
|
#ifndef OUTLINE_H
|
|
#define OUTLINE_H
|
|
|
|
#include <SkPath.h>
|
|
|
|
#include "Rect.h"
|
|
#include "utils/MathUtils.h"
|
|
|
|
namespace android {
|
|
namespace uirenderer {
|
|
|
|
class Outline {
|
|
public:
|
|
enum class Type {
|
|
None = 0,
|
|
Empty = 1,
|
|
ConvexPath = 2,
|
|
RoundRect = 3
|
|
};
|
|
|
|
Outline()
|
|
: mShouldClip(false)
|
|
, mType(Type::None)
|
|
, mRadius(0)
|
|
, mAlpha(0.0f) {}
|
|
|
|
void setRoundRect(int left, int top, int right, int bottom, float radius, float alpha) {
|
|
mAlpha = alpha;
|
|
if (mType == Type::RoundRect
|
|
&& left == mBounds.left
|
|
&& right == mBounds.right
|
|
&& top == mBounds.top
|
|
&& bottom == mBounds.bottom
|
|
&& radius == mRadius) {
|
|
// nothing to change, don't do any work
|
|
return;
|
|
}
|
|
|
|
mType = Type::RoundRect;
|
|
mBounds.set(left, top, right, bottom);
|
|
mRadius = radius;
|
|
|
|
// update mPath to reflect new outline
|
|
mPath.reset();
|
|
if (MathUtils::isPositive(radius)) {
|
|
mPath.addRoundRect(SkRect::MakeLTRB(left, top, right, bottom),
|
|
radius, radius);
|
|
} else {
|
|
mPath.addRect(left, top, right, bottom);
|
|
}
|
|
}
|
|
|
|
void setConvexPath(const SkPath* outline, float alpha) {
|
|
if (!outline) {
|
|
setEmpty();
|
|
return;
|
|
}
|
|
mType = Type::ConvexPath;
|
|
mPath = *outline;
|
|
mBounds.set(outline->getBounds());
|
|
mAlpha = alpha;
|
|
}
|
|
|
|
void setEmpty() {
|
|
mType = Type::Empty;
|
|
mPath.reset();
|
|
mAlpha = 0.0f;
|
|
}
|
|
|
|
void setNone() {
|
|
mType = Type::None;
|
|
mPath.reset();
|
|
mAlpha = 0.0f;
|
|
}
|
|
|
|
bool isEmpty() const {
|
|
return mType == Type::Empty;
|
|
}
|
|
|
|
float getAlpha() const {
|
|
return mAlpha;
|
|
}
|
|
|
|
void setShouldClip(bool clip) {
|
|
mShouldClip = clip;
|
|
}
|
|
|
|
bool getShouldClip() const {
|
|
return mShouldClip;
|
|
}
|
|
|
|
bool willClip() const {
|
|
// only round rect outlines can be used for clipping
|
|
return mShouldClip && (mType == Type::RoundRect);
|
|
}
|
|
|
|
bool willRoundRectClip() const {
|
|
// only round rect outlines can be used for clipping
|
|
return willClip() && MathUtils::isPositive(mRadius);
|
|
}
|
|
|
|
bool getAsRoundRect(Rect* outRect, float* outRadius) const {
|
|
if (mType == Type::RoundRect) {
|
|
outRect->set(mBounds);
|
|
*outRadius = mRadius;
|
|
return true;
|
|
}
|
|
return false;
|
|
}
|
|
|
|
const SkPath* getPath() const {
|
|
if (mType == Type::None || mType == Type::Empty) return nullptr;
|
|
|
|
return &mPath;
|
|
}
|
|
|
|
Type getType() const {
|
|
return mType;
|
|
}
|
|
|
|
const Rect& getBounds() const {
|
|
return mBounds;
|
|
}
|
|
|
|
float getRadius() const {
|
|
return mRadius;
|
|
}
|
|
|
|
private:
|
|
bool mShouldClip;
|
|
Type mType;
|
|
Rect mBounds;
|
|
float mRadius;
|
|
float mAlpha;
|
|
SkPath mPath;
|
|
};
|
|
|
|
} /* namespace uirenderer */
|
|
} /* namespace android */
|
|
|
|
#endif /* OUTLINE_H */
|