kblackbox/kbbgraphicsitemborder.cpp

   1 //
   2 // KBlackbox
   3 //
   4 // A simple game inspired by an emacs module
   5 //
   6 /***************************************************************************
   7  *   Copyright (c) 1999-2000, Robert Cimrman                               *
   8  *   cimrman3@students.zcu.cz                                              *
   9  *                                                                         *
  10  *   Copyright (c) 2007, Nicolas Roffet                                    *
  11  *   nicolas-kde@roffet.com                                                *
  12  *                                                                         *
  13  *                                                                         *
  14  *   This program is free software; you can redistribute it and/or modify  *
  15  *   it under the terms of the GNU General Public License as published by  *
  16  *   the Free Software Foundation; either version 2 of the License, or     *
  17  *   (at your option) any later version.                                   *
  18  *                                                                         *
  19  *   This program is distributed in the hope that it will be useful,       *
  20  *   but WITHOUT ANY WARRANTY; without even the implied warranty of        *
  21  *   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the         *
  22  *   GNU General Public License for more details.                          *
  23  *                                                                         *
  24  *   You should have received a copy of the GNU General Public License     *
  25  *   along with this program; if not, write to the                         *
  26  *   Free Software Foundation, Inc.,                                       *
  27  *   51 Franklin St, Fifth Floor, Boston, MA 02110-1301, USA               *
  28  ***************************************************************************/
  29
  30 #include "kbbgraphicsitemborder.h"
  31
  32
  33
  34 #include "kbbscalablegraphicwidget.h"
  35
  36
  37
  38 //
  39 // Constructor / Destructor
  40 //
  41
  42 KBBGraphicsItemBorder::KBBGraphicsItemBorder(int borderPosition, int columns, int rows, float offset)
  43 {
  44         m_offset = offset;
  45
  46         setSize(borderPosition, columns, rows);
  47 }
  48
  49
  50
  51 //
  52 // Public
  53 //
  54
  55 void KBBGraphicsItemBorder::setSize(int borderPosition, int columns, int rows)
  56 {
  57         m_borderPosition = borderPosition;
  58         m_columns = columns;
  59         m_rows = rows;
  60
  61         centerCoordinate(m_borderPosition, m_centerX, m_centerY, m_offset);
  62 }
  63
  64
  65
  66 //
  67 // Protected
  68 //
  69
  70 void KBBGraphicsItemBorder::setBorderPosition(int borderPosition)
  71 {
  72         setSize(borderPosition, m_columns, m_rows);
  73 }
  74
  75
  76 void KBBGraphicsItemBorder::centerCoordinate(int borderPosition, float &centerX, float &centerY, float offset)
  77 {
  78         const float b = (float) KBBScalableGraphicWidget::BORDER_SIZE;
  79         const float r = (float) KBBScalableGraphicWidget::RATIO;
  80         float x;
  81         float y;
  82         if (borderPosition<m_columns) {
  83                 x = borderPosition*r + b;
  84                 y = offset;
  85         } else if (borderPosition<m_columns + m_rows) {
  86                 x = m_columns*r + b + b/2 - offset;
  87                 y = (borderPosition - m_columns)*r + b;
  88         } else if (borderPosition<2*m_columns + m_rows) {
  89                 x = (2*m_columns + m_rows - borderPosition)*r + b/2;
  90                 y = m_rows*r + 3*b/2 - offset;
  91         } else {
  92                 x = offset;
  93                 y = (2*m_columns + 2*m_rows - borderPosition)*r + b/2;
  94         }
  95
  96         centerX = x + r/2;
  97         centerY = y + r/2;
  98 }
  99
 100
 101 float KBBGraphicsItemBorder::centerX() const
 102 {
 103         return m_centerX;
 104 }
 105
 106
 107 float KBBGraphicsItemBorder::centerY() const
 108 {
 109         return m_centerY;
 110 }
 111
 112
 113 int KBBGraphicsItemBorder::rotation()
 114 {
 115         if (m_borderPosition<m_columns) {
 116                 return 0;
 117         } else if (m_borderPosition<m_columns + m_rows) {
 118                 return 90;
 119         } else if (m_borderPosition<2*m_columns + m_rows) {
 120                 return 180;
 121         } else {
 122                 return 270;
 123         }
 124 }