/usr/include/mircommon/mir/geometry/dimensions.h is in mircommon-dev 0.1.8+14.04.20140411-0ubuntu1.
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* Copyright © 2012 Canonical Ltd.
*
* This program is free software: you can redistribute it and/or modify it
* under the terms of the GNU Lesser General Public License version 3,
* as published by the Free Software Foundation.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public License
* along with this program. If not, see <http://www.gnu.org/licenses/>.
*
* Authored by: Alan Griffiths <alan@octopull.co.uk>
*/
#ifndef MIR_GEOMETRY_DIMENSIONS_H_
#define MIR_GEOMETRY_DIMENSIONS_H_
#include <cstdint>
#include <iosfwd>
namespace mir
{
/// Basic geometry types. Types for dimensions, displacements, etc.
/// and the operations that they support.
namespace geometry
{
namespace detail
{
enum DimensionTag { width, height, x, y, dx, dy, stride };
template<DimensionTag Tag>
class IntWrapper
{
public:
typedef int ValueType;
IntWrapper() : value(0) {}
template<typename AnyInteger>
explicit IntWrapper(AnyInteger value) : value(static_cast<ValueType>(value)) {}
uint32_t as_uint32_t() const // TODO: Deprecate this later
{
return (uint32_t)value;
}
int as_int() const
{
return value;
}
float as_float() const
{
return value;
}
private:
ValueType value;
};
template<DimensionTag Tag>
std::ostream& operator<<(std::ostream& out, IntWrapper<Tag> const& value)
{
out << value.as_int();
return out;
}
template<DimensionTag Tag>
inline bool operator == (IntWrapper<Tag> const& lhs, IntWrapper<Tag> const& rhs)
{
return lhs.as_int() == rhs.as_int();
}
template<DimensionTag Tag>
inline bool operator != (IntWrapper<Tag> const& lhs, IntWrapper<Tag> const& rhs)
{
return lhs.as_int() != rhs.as_int();
}
template<DimensionTag Tag>
inline bool operator <= (IntWrapper<Tag> const& lhs, IntWrapper<Tag> const& rhs)
{
return lhs.as_int() <= rhs.as_int();
}
template<DimensionTag Tag>
inline bool operator >= (IntWrapper<Tag> const& lhs, IntWrapper<Tag> const& rhs)
{
return lhs.as_int() >= rhs.as_int();
}
template<DimensionTag Tag>
inline bool operator < (IntWrapper<Tag> const& lhs, IntWrapper<Tag> const& rhs)
{
return lhs.as_int() < rhs.as_int();
}
template<DimensionTag Tag>
inline bool operator > (IntWrapper<Tag> const& lhs, IntWrapper<Tag> const& rhs)
{
return lhs.as_int() > rhs.as_int();
}
} // namespace detail
typedef detail::IntWrapper<detail::width> Width;
typedef detail::IntWrapper<detail::height> Height;
// Just to be clear, mir::geometry::Stride is the stride of the buffer in bytes
typedef detail::IntWrapper<detail::stride> Stride;
typedef detail::IntWrapper<detail::x> X;
typedef detail::IntWrapper<detail::y> Y;
typedef detail::IntWrapper<detail::dx> DeltaX;
typedef detail::IntWrapper<detail::dy> DeltaY;
// Adding deltas is fine
inline DeltaX operator+(DeltaX lhs, DeltaX rhs) { return DeltaX(lhs.as_int() + rhs.as_int()); }
inline DeltaY operator+(DeltaY lhs, DeltaY rhs) { return DeltaY(lhs.as_int() + rhs.as_int()); }
inline DeltaX operator-(DeltaX lhs, DeltaX rhs) { return DeltaX(lhs.as_int() - rhs.as_int()); }
inline DeltaY operator-(DeltaY lhs, DeltaY rhs) { return DeltaY(lhs.as_int() - rhs.as_int()); }
// Adding deltas to co-ordinates is fine
inline X operator+(X lhs, DeltaX rhs) { return X(lhs.as_int() + rhs.as_int()); }
inline Y operator+(Y lhs, DeltaY rhs) { return Y(lhs.as_int() + rhs.as_int()); }
inline X operator-(X lhs, DeltaX rhs) { return X(lhs.as_int() - rhs.as_int()); }
inline Y operator-(Y lhs, DeltaY rhs) { return Y(lhs.as_int() - rhs.as_int()); }
// Subtracting coordinates is fine
inline DeltaX operator-(X lhs, X rhs) { return DeltaX(lhs.as_int() - rhs.as_int()); }
inline DeltaY operator-(Y lhs, Y rhs) { return DeltaY(lhs.as_int() - rhs.as_int()); }
template<typename Target, typename Source>
inline Target dim_cast(Source s) { return Target(s.as_int()); }
}
}
#endif /* MIR_GEOMETRY_DIMENSIONS_H_ */
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