src/qanGridItem.cpp

   1 /*
   2 Qanava - Graph drawing library for QT
   3 Copyright (C) 2006 Benoit AUTHEMAN
   4
   5 This library is free software; you can redistribute it and/or
   6 modify it under the terms of the GNU Lesser General Public
   7 License as published by the Free Software Foundation; either
   8 version 2.1 of the License, or (at your option) any later version.
   9
  10 This library 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 GNU
  13 Lesser General Public License for more details.
  14
  15 You should have received a copy of the GNU Lesser General Public
  16 License along with this library; if not, write to the Free Software
  17 Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301  USA
  18 */
  19
  20 //-----------------------------------------------------------------------------
  21 // This file is a part of the Qanava software.
  22 //
  23 // \file        canGrid.cpp
  24 // \author      Benoit Autheman (benoit@libqanava.org)
  25 // \date        2004 December 05
  26 //-----------------------------------------------------------------------------
  27
  28
  29 // Qanava headers
  30 #include "./qanGridItem.h"
  31
  32
  33 // QT headers
  34 #include <QPen>
  35 #include <QPainter>
  36 #include <QGraphicsLineItem>
  37
  38
  39 // STD headers
  40 //#include <math.h>
  41
  42
  43 namespace qan {  // ::qan
  44
  45
  46 /* Grid Constructor/Destructor  *///-------------------------------------------
  47 /*!
  48  */
  49 GridItem::GridItem( GraphicsView* graphicsView ) :
  50         QGraphicsItem( 0, graphicsView->scene( ) )
  51 {
  52         //connect( graphView->getGraphicsScene( ), SIGNAL( sceneRectChanged(const QRectF&) ),
  53         //               this, SLOT( sceneRectChanged(const QRectF&) ) );
  54
  55         graphicsView->setGrid( this );
  56 }
  57
  58 GridItem::~GridItem( )
  59 {
  60
  61 }
  62 //-----------------------------------------------------------------------------
  63
  64
  65 /* Graphics View Grid Implementation *///--------------------------------------
  66 QRectF  GridItem::boundingRect( ) const
  67 {
  68         return QRectF( QPointF( 0., 0. ), QSizeF( 1., 1. ) );
  69 }
  70
  71 void    GridItem::drawBackground( QPainter& painter, const QRectF& rect )
  72 {
  73
  74 }
  75 //-----------------------------------------------------------------------------
  76
  77
  78
  79 /* Grid Content Management  *///-----------------------------------------------
  80 void    GridItem::addLine( QLineF l, float w, bool dash, bool dot )
  81 {
  82         QGraphicsLineItem* line = new QGraphicsLineItem( l, this, scene( ) );
  83
  84         // TODO: dash, dot, w
  85 }
  86
  87 void    GridItem::addRectangle( QRectF r, QColor c )
  88 {
  89 }
  90
  91 void    GridItem::addText( const QString& text, QPointF p, bool bold )
  92 {
  93 }
  94
  95 void    GridItem::addHorizontalLine( QLineF l, int w, bool dash, bool dot )
  96 {
  97 }
  98
  99 void    GridItem::addVerticalLine( QLineF l, int w, bool dash, bool dot )
 100 {
 101 }
 102 //-----------------------------------------------------------------------------
 103
 104
 105
 106 /* Regular Grid Management  *///-----------------------------------------------
 107 GridRegularItem::GridRegularItem( GraphicsView* graphicsView, int spacing ) :
 108         GridItem( graphicsView ),
 109         _spacing( spacing ),
 110         _sizeMax( 0, 0 ),
 111         _gradCount( 0, 0 )
 112 {
 113
 114 }
 115 //-----------------------------------------------------------------------------
 116
 117
 118
 119 /* CheckBoard Grid Management  *///--------------------------------------------
 120 GridCheckBoardItem::GridCheckBoardItem( GraphicsView* graphicsView, QColor white, QColor black, qreal length ) :
 121         GridItem( graphicsView ),
 122         _white( white ),
 123         _black( black )
 124 {
 125         _squaresPattern = QPixmap( length * 2, length * 2 );
 126         QPainter painter( &_squaresPattern );
 127         painter.fillRect( 0,            0,              length, length, white );
 128         painter.fillRect( length,       0,              length, length, black );
 129         painter.fillRect( 0,            length, length, length, black );
 130         painter.fillRect( length,       length, length, length, white );
 131         painter.end( );
 132 }
 133
 134 void    GridCheckBoardItem::drawBackground( QPainter& painter, const QRectF& rect )
 135 {
 136         GridItem::drawBackground( painter, rect );
 137
 138         int left        = ( int )rect.left( );
 139         int top         = ( int )rect.top( );
 140         int x = ( ( left / 100 ) * 100 );
 141         int y = ( ( top / 100 ) * 100 );
 142
 143         if ( left < 0 )
 144                 x = x - 100;
 145         if ( top < 0 )
 146                 y = y - 100;
 147
 148         if ( !_squaresPattern.isNull( ) )
 149                 painter.drawTiledPixmap( x, y, rect.width( ) + 100, rect.height( ) + 100, _squaresPattern );
 150 }
 151 //-----------------------------------------------------------------------------
 152
 153
 154 } // ::qan