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/*
* Copyright (c) 2020 Samsung Electronics Co., Ltd. All rights reserved.
* Permission is hereby granted, free of charge, to any person obtaining a copy
* of this software and associated documentation files (the "Software"), to deal
* in the Software without restriction, including without limitation the rights
* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
* copies of the Software, and to permit persons to whom the Software is
* furnished to do so, subject to the following conditions:
* The above copyright notice and this permission notice shall be included in
* all copies or substantial portions of the Software.
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
* AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
* SOFTWARE.
*/
#ifndef VRLE_H
#define VRLE_H
#include <vector>
#include "vector_vcowptr.h"
#include "vector_vglobal.h"
#include "vector_vpoint.h"
#include "vector_vrect.h"
V_BEGIN_NAMESPACE
class VRle {
public:
struct Span {
short x{0};
short y{0};
ushort len{0};
uchar coverage{0};
};
using VRleSpanCb = void (*)(size_t count, const VRle::Span *spans,
void *userData);
bool empty() const { return d->empty(); }
VRect boundingRect() const { return d->bbox(); }
void setBoundingRect(const VRect &bbox) { d->setBbox(bbox); }
void addSpan(const VRle::Span *span, size_t count)
{
d.write().addSpan(span, count);
}
void reset() { d.write().reset(); }
void translate(const VPoint &p) { d.write().translate(p); }
void operator*=(uchar alpha) { d.write() *= alpha; }
void intersect(const VRect &r, VRleSpanCb cb, void *userData) const;
void intersect(const VRle &rle, VRleSpanCb cb, void *userData) const;
void operator&=(const VRle &o);
VRle operator&(const VRle &o) const;
VRle operator-(const VRle &o) const;
VRle operator+(const VRle &o) const { return opGeneric(o, Data::Op::Add); }
VRle operator^(const VRle &o) const { return opGeneric(o, Data::Op::Xor); }
friend VRle operator-(const VRect &rect, const VRle &o);
friend VRle operator&(const VRect &rect, const VRle &o);
bool unique() const { return d.unique(); }
size_t refCount() const { return d.refCount(); }
void clone(const VRle &o) { d.write().clone(o.d.read()); }
public:
struct View {
Span * _data;
size_t _size;
View(const Span *data, size_t sz) : _data((Span *)data), _size(sz) {}
Span * data() { return _data; }
size_t size() { return _size; }
};
struct Data {
enum class Op { Add, Xor, Substract };
VRle::View view() const
{
return VRle::View(mSpans.data(), mSpans.size());
}
bool empty() const { return mSpans.empty(); }
void addSpan(const VRle::Span *span, size_t count);
void updateBbox() const;
VRect bbox() const;
void setBbox(const VRect &bbox) const;
void reset();
void translate(const VPoint &p);
void operator*=(uchar alpha);
void opGeneric(const VRle::Data &, const VRle::Data &, Op code);
void opSubstract(const VRle::Data &, const VRle::Data &);
void opIntersect(VRle::View a, VRle::View b);
void opIntersect(const VRect &, VRle::VRleSpanCb, void *) const;
void addRect(const VRect &rect);
void clone(const VRle::Data &);
std::vector<VRle::Span> mSpans;
VPoint mOffset;
mutable VRect mBbox;
mutable bool mBboxDirty = true;
};
private:
VRle opGeneric(const VRle &o, Data::Op opcode) const;
vcow_ptr<Data> d;
};
inline void VRle::intersect(const VRect &r, VRleSpanCb cb, void *userData) const
{
d->opIntersect(r, cb, userData);
}
V_END_NAMESPACE
#endif // VRLE_H
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