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 namespace qan {  // ::qan
  40
  41
  42 /* Grid Constructor/Destructor  *///-------------------------------------------
  43 /*!
  44  */
  45 GridItem::GridItem( GraphView* GraphView ) :
  46         QGraphicsItem( 0, GraphView->scene( ) )
  47 {
  48         //connect( graphView->getGraphicsScene( ), SIGNAL( sceneRectChanged(const QRectF&) ),
  49         //               this, SLOT( sceneRectChanged(const QRectF&) ) );
  50
  51         GraphView->setGrid( this );
  52 }
  53
  54 GridItem::~GridItem( )
  55 {
  56
  57 }
  58 //-----------------------------------------------------------------------------
  59
  60
  61 /* Graphics View Grid Implementation *///--------------------------------------
  62 QRectF  GridItem::boundingRect( ) const
  63 {
  64         return QRectF( QPointF( 0., 0. ), QSizeF( 1., 1. ) );
  65 }
  66
  67 void    GridItem::drawBackground( QPainter& painter, const QRectF& rect )
  68 {
  69
  70 }
  71 //-----------------------------------------------------------------------------
  72
  73
  74
  75 /* Grid Content Management  *///-----------------------------------------------
  76 void    GridItem::addLine( QLineF l, float w, bool dash, bool dot )
  77 {
  78         QGraphicsLineItem* line = new QGraphicsLineItem( l, this, scene( ) );
  79
  80         // TODO: dash, dot, w
  81 }
  82
  83 void    GridItem::addRectangle( QRectF r, QColor c )
  84 {
  85 }
  86
  87 void    GridItem::addText( const QString& text, QPointF p, bool bold )
  88 {
  89 }
  90
  91 void    GridItem::addHorizontalLine( QLineF l, int w, bool dash, bool dot )
  92 {
  93 }
  94
  95 void    GridItem::addVerticalLine( QLineF l, int w, bool dash, bool dot )
  96 {
  97 }
  98 //-----------------------------------------------------------------------------
  99
 100
 101
 102 /* Regular Grid Management  *///-----------------------------------------------
 103 GridRegularItem::GridRegularItem( GraphView* GraphView, int spacing ) :
 104         GridItem( GraphView ),
 105         _spacing( spacing ),
 106         _sizeMax( 0, 0 ),
 107         _gradCount( 0, 0 )
 108 {
 109
 110 }
 111 //-----------------------------------------------------------------------------
 112
 113
 114
 115 /* CheckBoard Grid Management  *///--------------------------------------------
 116 GridCheckBoardItem::GridCheckBoardItem( GraphView* GraphView, QColor white, QColor black, qreal length ) :
 117         GridItem( GraphView ),
 118         _white( white ),
 119         _black( black )
 120 {
 121         _squaresPattern = QPixmap( length * 2, length * 2 );
 122         QPainter painter( &_squaresPattern );
 123         painter.fillRect( 0,            0,              length, length, white );
 124         painter.fillRect( length,       0,              length, length, black );
 125         painter.fillRect( 0,            length, length, length, black );
 126         painter.fillRect( length,       length, length, length, white );
 127         painter.end( );
 128 }
 129
 130 void    GridCheckBoardItem::drawBackground( QPainter& painter, const QRectF& rect )
 131 {
 132         GridItem::drawBackground( painter, rect );
 133
 134         int left        = ( int )rect.left( );
 135         int top         = ( int )rect.top( );
 136         int x = ( ( left / 100 ) * 100 );
 137         int y = ( ( top / 100 ) * 100 );
 138
 139         if ( left < 0 )
 140                 x = x - 100;
 141         if ( top < 0 )
 142                 y = y - 100;
 143
 144         if ( !_squaresPattern.isNull( ) )
 145                 painter.drawTiledPixmap( x, y, rect.width( ) + 100, rect.height( ) + 100, _squaresPattern );
 146 }
 147 //-----------------------------------------------------------------------------
 148
 149
 150 } // ::qan