ROOT_528-00b_version: gui/gui/src/TGDimension.cxx Source File

00001 // @(#)root/gui:$Id: TGDimension.cxx 23115 2008-04-10 13:35:37Z rdm $
00002 // Author: Fons Rademakers   02/01/98
00003 
00004 /*************************************************************************
00005  * Copyright (C) 1995-2000, Rene Brun and Fons Rademakers.               *
00006  * All rights reserved.                                                  *
00007  *                                                                       *
00008  * For the licensing terms see $ROOTSYS/LICENSE.                         *
00009  * For the list of contributors see $ROOTSYS/README/CREDITS.             *
00010  *************************************************************************/
00011 /**************************************************************************
00012 
00013     This source is based on Xclass95, a Win95-looking GUI toolkit.
00014     Copyright (C) 1996, 1997 David Barth, Ricky Ralston, Hector Peraza.
00015 
00016     Xclass95 is free software; you can redistribute it and/or
00017     modify it under the terms of the GNU Library General Public
00018     License as published by the Free Software Foundation; either
00019     version 2 of the License, or (at your option) any later version.
00020 
00021 **************************************************************************/
00022 
00023 //////////////////////////////////////////////////////////////////////////
00024 //                                                                      //
00025 // TGDimension, TGPosition, TGLongPosition, TGInsets and TGRectangle    //
00026 //                                                                      //
00027 // Several small geometry classes that implement dimensions             //
00028 // (width and height), positions (x and y), insets and rectangles.      //
00029 // They are trivial and their members are public.                       //
00030 //                                                                      //
00031 //////////////////////////////////////////////////////////////////////////
00032 
00033 #include "TGDimension.h"
00034 #include "TMathBase.h"
00035 
00036 ClassImp(TGDimension)
00037 ClassImp(TGPosition)
00038 ClassImp(TGLongPosition)
00039 ClassImp(TGInsets)
00040 ClassImp(TGRectangle)
00041 
00042 void TGRectangle::Merge(const TGRectangle &r)
00043 { 
00044    // Merge parameters
00045    Int_t max_x = TMath::Max(fX + (Int_t) fW, r.fX + (Int_t) r.fW); 
00046    fX = TMath::Min(fX, r.fX);
00047    Int_t max_y = TMath::Max(fY + (Int_t) fH, r.fY + (Int_t) r.fH); 
00048    fY = TMath::Min(fY, r.fY);
00049    fW = max_x - fX;
00050    fH = max_y - fY; 
00051 }