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-rw-r--r--canvas/source/tools/surfacerect.hxx138
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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: */