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/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
/*************************************************************************
*
* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
*
* Copyright 2000, 2010 Oracle and/or its affiliates.
*
* OpenOffice.org - a multi-platform office productivity suite
*
* This file is part of OpenOffice.org.
*
* OpenOffice.org is free software: you can redistribute it and/or modify
* it under the terms of the GNU Lesser General Public License version 3
* only, as published by the Free Software Foundation.
*
* OpenOffice.org 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 version 3 for more details
* (a copy is included in the LICENSE file that accompanied this code).
*
* You should have received a copy of the GNU Lesser General Public License
* version 3 along with OpenOffice.org. If not, see
* <http://www.openoffice.org/license.html>
* for a copy of the LGPLv3 License.
*
************************************************************************/
#ifndef INCLUDED_CANVAS_SURFACERECT_HXX
#define INCLUDED_CANVAS_SURFACERECT_HXX
#include <basegfx/point/b2ipoint.hxx>
#include <basegfx/vector/b2isize.hxx>
namespace canvas
{
//////////////////////////////////////////////////////////////////////////////////
// SurfaceRect
//////////////////////////////////////////////////////////////////////////////////
struct SurfaceRect
{
::basegfx::B2IPoint maPos;
::basegfx::B2ISize maSize;
::basegfx::B2IPoint maBackup;
bool bEnabled;
explicit SurfaceRect( const ::basegfx::B2ISize &rSize ) :
maPos(),
maSize(rSize),
maBackup(),
bEnabled(true)
{
}
// coordinates contained in this rectangle are
// constrained to the following rules:
// 1) p.x >= pos.x
// 2) p.x <= pos.x+size.x
// 3) p.y >= pos.y
// 4) p.y <= pos.y+size.y
// in other words, 'size' means the number of pixels
// this rectangle encloses plus one. for example with pos[0,0]
// and size[512,512], p[512,512] would return inside.
// a size of [0,0] therefore denotes a one-by-one rectangle.
bool pointInside( sal_Int32 px, sal_Int32 py ) const
{
const sal_Int32 x1(maPos.getX());
const sal_Int32 y1(maPos.getY());
const sal_Int32 x2(maPos.getX()+maSize.getX());
const sal_Int32 y2(maPos.getY()+maSize.getY());
if(px < x1) return false;
if(px >= x2) return false;
if(py < y1) return false;
if(py >= y2) return false;
return true;
}
// returns true if the horizontal line intersects the rect.
bool hLineIntersect( sal_Int32 lx1, sal_Int32 lx2, sal_Int32 ly ) const
{
const sal_Int32 x1(maPos.getX());
const sal_Int32 y1(maPos.getY());
const sal_Int32 x2(maPos.getX()+maSize.getX());
const sal_Int32 y2(maPos.getY()+maSize.getY());
if(ly < y1) return false;
if(ly >= y2) return false;
if((lx1 < x1) && (lx2 < x1)) return false;
if((lx1 >= x2) && (lx2 >= x2)) return false;
return true;
}
//! Returns true if the vertical line intersects the rect.
bool vLineIntersect( sal_Int32 lx, sal_Int32 ly1, sal_Int32 ly2 ) const
{
const sal_Int32 x1(maPos.getX());
const sal_Int32 y1(maPos.getY());
const sal_Int32 x2(maPos.getX()+maSize.getX());
const sal_Int32 y2(maPos.getY()+maSize.getY());
if(lx < x1) return false;
if(lx >= x2) return false;
if((ly1 < y1) && (ly2 < y1)) return false;
if((ly1 >= y2) && (ly2 >= y2)) return false;
return true;
}
// returns true if the passed rect intersects this one.
bool intersection( const SurfaceRect& r ) const
{
const sal_Int32 x1(maPos.getX());
const sal_Int32 y1(maPos.getY());
const sal_Int32 x2(maPos.getX()+maSize.getX());
const sal_Int32 y2(maPos.getY()+maSize.getY());
if(r.hLineIntersect(x1,x2,y1)) return true;
if(r.hLineIntersect(x1,x2,y2)) return true;
if(r.vLineIntersect(x1,y1,y2)) return true;
if(r.vLineIntersect(x2,y1,y2)) return true;
return false;
}
bool inside( const SurfaceRect& r ) const
{
const sal_Int32 x1(maPos.getX());
const sal_Int32 y1(maPos.getY());
const sal_Int32 x2(maPos.getX()+maSize.getX());
const sal_Int32 y2(maPos.getY()+maSize.getY());
if(!(r.pointInside(x1,y1))) return false;
if(!(r.pointInside(x2,y1))) return false;
if(!(r.pointInside(x2,y2))) return false;
if(!(r.pointInside(x1,y2))) return false;
return true;
}
};
}
#endif
/* vim:set shiftwidth=4 softtabstop=4 expandtab: */
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