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FXSize.h

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00001 /********************************************************************************
00002 *                                                                               *
00003 *                               S i z e    C l a s s                            *
00004 *                                                                               *
00005 *********************************************************************************
00006 * Copyright (C) 1994,2009 by Jeroen van der Zijp.   All Rights Reserved.        *
00007 *********************************************************************************
00008 * This library is free software; you can redistribute it and/or modify          *
00009 * it under the terms of the GNU Lesser General Public License as published by   *
00010 * the Free Software Foundation; either version 3 of the License, or             *
00011 * (at your option) any later version.                                           *
00012 *                                                                               *
00013 * This library is distributed in the hope that it will be useful,               *
00014 * but WITHOUT ANY WARRANTY; without even the implied warranty of                *
00015 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the                 *
00016 * GNU Lesser General Public License for more details.                           *
00017 *                                                                               *
00018 * You should have received a copy of the GNU Lesser General Public License      *
00019 * along with this program.  If not, see <http://www.gnu.org/licenses/>          *
00020 *********************************************************************************
00021 * $Id: FXSize.h,v 1.20 2009/01/06 13:07:27 fox Exp $                            *
00022 ********************************************************************************/
00023 #ifndef FXSIZE_H
00024 #define FXSIZE_H
00025 
00026 
00027 namespace FX {
00028 
00029 
00030 /// Size
00031 class FXAPI FXSize {
00032 public:
00033   FXshort w;
00034   FXshort h;
00035 public:
00036 
00037   /// Constructors
00038   FXSize(){ }
00039   FXSize(const FXSize& s):w(s.w),h(s.h){ }
00040   FXSize(FXshort ww,FXshort hh):w(ww),h(hh){ }
00041 
00042   /// Test if empty
00043   FXbool empty() const { return w<=0 || h<=0; }
00044 
00045   /// Test if zero
00046   FXbool operator!() const { return w==0 && h==0; }
00047 
00048   /// Equality
00049   FXbool operator==(const FXSize& s) const { return w==s.w && h==s.h; }
00050   FXbool operator!=(const FXSize& s) const { return w!=s.w || h!=s.h; }
00051 
00052   /// Grow by amount
00053   FXSize& grow(FXshort margin);
00054   FXSize& grow(FXshort hormargin,FXshort vermargin);
00055   FXSize& grow(FXshort leftmargin,FXshort rightmargin,FXshort topmargin,FXshort bottommargin);
00056 
00057   /// Shrink by amount
00058   FXSize& shrink(FXshort margin);
00059   FXSize& shrink(FXshort hormargin,FXshort vermargin);
00060   FXSize& shrink(FXshort leftmargin,FXshort rightmargin,FXshort topmargin,FXshort bottommargin);
00061 
00062   /// Assignment
00063   FXSize& operator=(const FXSize& s){ w=s.w; h=s.h; return *this; }
00064 
00065   /// Set value from another size
00066   FXSize& set(const FXSize& s){ w=s.w; h=s.h; return *this; }
00067 
00068   /// Set value from components
00069   FXSize& set(FXshort ww,FXshort hh){ w=ww; h=hh; return *this; }
00070 
00071   /// Assignment operators
00072   FXSize& operator+=(const FXSize& s){ w+=s.w; h+=s.h; return *this; }
00073   FXSize& operator-=(const FXSize& s){ w-=s.w; h-=s.h; return *this; }
00074   FXSize& operator*=(FXshort c){ w*=c; h*=c; return *this; }
00075   FXSize& operator/=(FXshort c){ w/=c; h/=c; return *this; }
00076 
00077   /// Negation
00078   FXSize operator-(){ return FXSize(-w,-h); }
00079 
00080   /// Addition operators
00081   FXSize operator+(const FXSize& s) const { return FXSize(w+s.w,h+s.h); }
00082   FXSize operator-(const FXSize& s) const { return FXSize(w-s.w,h-s.h); }
00083 
00084   /// Scale operators
00085   friend inline FXSize operator*(const FXSize& s,FXshort c);
00086   friend inline FXSize operator*(FXshort c,const FXSize& s);
00087   friend inline FXSize operator/(const FXSize& s,FXshort c);
00088   friend inline FXSize operator/(FXshort c,const FXSize& s);
00089 
00090   /// Save object to a stream
00091   friend FXAPI FXStream& operator<<(FXStream& store,const FXSize& s);
00092 
00093   /// Load object from a stream
00094   friend FXAPI FXStream& operator>>(FXStream& store,FXSize& s);
00095   };
00096 
00097 inline FXSize operator*(const FXSize& s,FXshort c){ return FXSize(s.w*c,s.h*c); }
00098 inline FXSize operator*(FXshort c,const FXSize& s){ return FXSize(c*s.w,c*s.h); }
00099 inline FXSize operator/(const FXSize& s,FXshort c){ return FXSize(s.w/c,s.h/c); }
00100 inline FXSize operator/(FXshort c,const FXSize& s){ return FXSize(c/s.w,c/s.h); }
00101 
00102 extern FXAPI FXStream& operator<<(FXStream& store,const FXSize& s);
00103 extern FXAPI FXStream& operator>>(FXStream& store,FXSize& s);
00104 
00105 }
00106 
00107 #endif

Copyright © 1997-2009 Jeroen van der Zijp