src/constrainedtext.cpp

   1 /*
   2   Copyright (c) 2006 Paolo Capriotti <p.capriotti@sns.it>
   3             (c) 2006 Maurizio Monge <maurizio.monge@kdemail.net>
   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
  11 #include "constrainedtext.h"
  12 #include <QApplication>
  13
  14
  15 ConstrainedText::ConstrainedText(const QString& text, const QColor& color,
  16                         const QFont& font, const QRect& rect,
  17                         KGameCanvasAbstract* Constrained)
  18     : KGameCanvasItem(Constrained)
  19     , m_text(text)
  20     , m_color(color)
  21     , m_font(font)
  22     , m_constr(rect)  {
  23     calcBoundingRect();
  24 }
  25
  26 ConstrainedText::ConstrainedText(KGameCanvasAbstract* Constrained)
  27     : KGameCanvasItem(Constrained)
  28     //, m_text("")
  29     , m_color(Qt::black)
  30     , m_font(QApplication::font()) {
  31
  32 }
  33
  34 ConstrainedText::~ConstrainedText() {
  35
  36 }
  37
  38 void ConstrainedText::calcBoundingRect() {
  39   QString test;
  40   for(int i=0;i<m_text.length();i++)
  41     test += 'H';
  42   m_bounding_rect_max = QFontMetrics(m_font).boundingRect(test);
  43
  44   m_bounding_rect = QFontMetrics(m_font).boundingRect(m_text);
  45 }
  46
  47 void ConstrainedText::setConstrainRect(const QRect& rect) {
  48   if(m_constr == rect)
  49     return;
  50
  51   m_constr = rect;
  52   if(visible() && canvas() )
  53     changed();
  54 }
  55
  56 void ConstrainedText::setText(const QString& text) {
  57   if(m_text == text)
  58     return;
  59   m_text = text;
  60   calcBoundingRect();
  61
  62   if(visible() && canvas() )
  63     changed();
  64 }
  65
  66 void ConstrainedText::setColor(const QColor& color) {
  67   m_color = color;
  68 }
  69
  70 void ConstrainedText::setFont(const QFont& font) {
  71   m_font = font;
  72   calcBoundingRect();
  73
  74   if(visible() && canvas() )
  75     changed();
  76 }
  77
  78 void ConstrainedText::paint(QPainter* p) {
  79   if(m_bounding_rect_max.width() == 0 || m_bounding_rect_max.height() == 0)
  80     return;
  81
  82   p->setPen(m_color);
  83   p->setFont(m_font);
  84
  85   double fact = qMin(double(m_constr.width())/m_bounding_rect_max.width(),
  86                       double(m_constr.height())/m_bounding_rect_max.height());
  87   QMatrix savem = p->matrix();
  88   //p->fillRect( m_constr, Qt::blue );
  89   p->translate(QRectF(m_constr).center());
  90   p->scale(fact, fact);
  91   p->translate(-QRectF(m_bounding_rect_max).center());
  92   //p->fillRect( m_bounding_rect_max, Qt::red );
  93   p->drawText( QPoint((m_bounding_rect_max.width()-m_bounding_rect.width())/2,0), m_text);
  94   p->setMatrix(savem);
  95 }
  96
  97 QRect ConstrainedText::rect() const {
  98     return m_constr; //suboptimal. oh, well...
  99 }