QtCollider/widgets/QcButton.cpp

   1 /************************************************************************
   2 *
   3 * Copyright 2010-2012 Jakob Leben (jakob.leben@gmail.com)
   4 *
   5 * This file is part of SuperCollider Qt GUI.
   6 *
   7 * This program is free software: you can redistribute it and/or modify
   8 * it under the terms of the GNU General Public License as published by
   9 * the Free Software Foundation, either version 3 of the License, or
  10 * (at your option) any later version.
  11 *
  12 * This program is distributed in the hope that it will be useful,
  13 * but WITHOUT ANY WARRANTY; without even the implied warranty of
  14 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  15 * GNU General Public License for more details.
  16 *
  17 * You should have received a copy of the GNU General Public License
  18 * along with this program.  If not, see <http://www.gnu.org/licenses/>.
  19 *
  20 ************************************************************************/
  21
  22 #include "QcButton.h"
  23 #include "../QcWidgetFactory.h"
  24
  25 #ifdef Q_WS_MAC
  26 # include <QMacStyle>
  27 #endif
  28
  29 QC_DECLARE_QWIDGET_FACTORY(QcButton);
  30
  31 QcButton::QcButton():
  32   QtCollider::Style::Client(this),
  33   currentState(0)
  34 {
  35   connect( this, SIGNAL(clicked()), this, SLOT(doAction()) );
  36 }
  37
  38 #ifdef Q_WS_MAC
  39 bool QcButton::hitButton( const QPoint & pos ) const
  40 {
  41   // FIXME: This is a workaround for Qt Bug 15936:
  42   // incorrect QPushButton hit area.
  43
  44   QMacStyle *macStyle = qobject_cast<QMacStyle *>(style());
  45
  46   if( !macStyle || isFlat() )
  47     return QAbstractButton::hitButton(pos);
  48   else
  49     return QPushButton::hitButton(pos);
  50 }
  51 #endif
  52
  53 void QcButton::setStates( const VariantList & statesArg )
  54 {
  55   if( !statesArg.data.count() ) return;
  56
  57   states.clear();
  58
  59   Q_FOREACH( QVariant var, statesArg.data ) {
  60     VariantList stateArg = var.value<VariantList>();
  61     int count = stateArg.data.size();
  62     State state;
  63     if( count >= 1 )
  64       state.text = stateArg.data[0].toString();
  65     if( count >= 2 )
  66       state.textColor = stateArg.data[1].value<QColor>();
  67     if( count >= 3 )
  68       state.buttonColor = stateArg.data[2].value<QColor>();
  69     states.append( state );
  70   }
  71   setState( 0 );
  72 }
  73
  74 void QcButton::setState( int i )
  75 {
  76   int c = states.count();
  77   if( !c ) return;
  78
  79   currentState = qBound( 0, i, c-1 );
  80   setText( states[currentState].text );
  81   update();
  82 }
  83
  84 void QcButton::cycleStates()
  85 {
  86   if( states.size() < 2 ) return;
  87   int i = currentState + 1;
  88   if( i >= states.size() ) i = 0;
  89   setState( i );
  90 }
  91
  92 void QcButton::doAction()
  93 {
  94   cycleStates();
  95   Q_EMIT( action((int)QApplication::keyboardModifiers()) );
  96 }
  97
  98 void QcButton::paintEvent ( QPaintEvent * )
  99 {
 100   using namespace QtCollider::Style;
 101   using QtCollider::Style::RoundRect;
 102
 103   QPainter p(this);
 104   p.setRenderHint( QPainter::Antialiasing, true );
 105
 106   State state;
 107   if(states.count()) state = states[currentState];
 108
 109   const QPalette &plt = palette();
 110   bool sunken = isDown();
 111   int radius = 2;
 112
 113   if(!state.buttonColor.isValid()) state.buttonColor = plt.color(QPalette::Button);
 114   if(sunken) state.buttonColor = state.buttonColor.darker(120);
 115
 116   QColor focusClr( hasFocus() ? focusColor() : QColor() );
 117
 118   QRect r(rect());
 119
 120   RoundRect frame( r, radius );
 121   if( sunken )
 122     drawSunken( &p, plt, frame, state.buttonColor, focusClr);
 123   else
 124     drawRaised( &p, plt, frame, state.buttonColor, focusClr );
 125
 126   p.setPen( state.textColor.isValid() ? state.textColor : plt.color(QPalette::ButtonText) );
 127   if(sunken) r.translate(1,1);
 128   p.drawText( r,  Qt::AlignCenter, text() );
 129 }