kalzium/src/elementbutton.h

   1 /***************************************************************************
   2  *   Copyright (C) 2003 by Carsten Niehaus                                 *
   3  *   cniehaus@kde.org                                                      *
   4  *                                                                         *
   5  *   This program is free software; you can redistribute it and/or modify  *
   6  *   it under the terms of the GNU General Public License as published by  *
   7  *   the Free Software Foundation; either version 2 of the License, or     *
   8  *   (at your option) any later version.                                   *
   9  *                                                                         *
  10  *   This program is distributed in the hope that it will be useful,       *
  11  *   but WITHOUT ANY WARRANTY; without even the implied warranty of        *
  12  *   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the         *
  13  *   GNU General Public License for more details.                          *
  14  *                                                                         *
  15  *   You should have received a copy of the GNU General Public License     *
  16  *   along with this program; if not, write to the                         *
  17  *   Free Software Foundation, Inc.,                                       *
  18  *   59 Temple Place - Suite 330, Boston, MA  02111-1307, USA.             *
  19  ***************************************************************************/
  20 #ifndef ELEMENTBUTTON_H
  21 #define ELEMENTBUTTON_H
  22
  23 #include <qframe.h>
  24 #include "element.h"
  25
  26 class QMouseEvent;
  27
  28 /**
  29  *An ElementButton is the widget the users sees when looking at the table.
  30  *It provides the drag&drop-actions and click-events. Furthermore it can change
  31  *it colors and hide/show itself.
  32  *
  33  *@author Carsten Niehaus
  34  */
  35 class ElementButton : public QFrame
  36 {
  37         Q_OBJECT
  38         public:
  39                 ElementButton(int number, Element *el, QWidget *parent = 0, const char *name = 0);
  40
  41                 ~ElementButton();
  42                 int ElementNumber();
  43
  44                 /**
  45                  * the symbol of the element
  46                  */
  47                 QString sym;
  48
  49                 /**
  50                  * the element this buttons represents
  51                  */
  52                 Element *e;
  53
  54     /**
  55      * accessor for the element's color
  56      */
  57     QColor elementColor() const { return m_Color; }
  58
  59     /**
  60      * mutator for the element's color
  61      */
  62     void setElementColor( const QColor &c ) { m_Color = c; update(); }
  63
  64                 virtual void paintEvent( QPaintEvent* );
  65
  66         private:
  67                 /*
  68                  * the integer num represents the number of the element
  69                  */
  70                 int m_ElementNumber;
  71     QColor m_Color;
  72
  73                 void mousePressEvent( QMouseEvent* );
  74                 void mouseReleaseEvent( QMouseEvent* );
  75
  76         signals:
  77                 /*
  78                  * this signal emits the name ( the element-number )·
  79                  **/
  80                 void num( int );
  81
  82 };
  83
  84 #endif