pulser.cpp

   1 #include <QGraphicsWidget>
   2 #include <QEvent>
   3 #include <QAbstractAnimation>
   4 #include <QParallelAnimationGroup>
   5 #include <QDebug>
   6 #include <QPropertyAnimation>
   7 #include "pulser.h"
   8 #include "proxyopacitysetter.h"
   9
  10 PulseBase::~PulseBase()
  11 {
  12      delete animation;
  13      delete pulseGeometry;
  14 }
  15
  16 void PulseBase::start()
  17 {
  18     under->setOpacity( 1 );
  19     animation->start();
  20 }
  21
  22 QRectF PulseBase::geometry()
  23 {
  24     return under->geometry();
  25 }
  26
  27
  28 void PulseBase::updateGeometry(QRectF updated, qreal zCoordinate, qreal scale)
  29 {
  30     zvalue = zCoordinate;
  31     --zvalue;
  32     under->setGeometry( updated );
  33     under->setPos( 0, 0 );
  34     under->setOpacity( 0 );
  35     under->setZValue( zvalue );
  36
  37     /* TODO: move this to a function */
  38     QRectF initial( under->geometry() );
  39     qreal W = initial.width() * scale * 0.33;
  40     qreal H = initial.height() * scale * 0.33;
  41     QRectF end( initial.x() - W, initial.y() -  H, initial.width() * scale,
  42         initial.height() * scale );
  43     anim2->setEndValue(end);
  44
  45     anim2->setEndValue(end);
  46
  47
  48 }
  49
  50 void PulseBase::resetPulser()
  51 {
  52     under->setGeometry( *pulseGeometry );
  53     under->setOpacity( 0 );
  54     under->setZValue( zvalue );
  55     under->setScale( mscale );
  56 }
  57
  58 void PulseBase::createAnimation( qreal duration, qreal scale,
  59                             ProxyOpacitySetter *setter )
  60 {
  61
  62     pulseGeometry = new QRectF( under->geometry() );
  63     QParallelAnimationGroup *group = new QParallelAnimationGroup(this);
  64     anim1 = new QPropertyAnimation(under, "opacity");
  65     anim1->setDuration(duration);
  66     anim1->setEndValue(0);
  67     group->addAnimation(anim1);
  68
  69     /* TODO: move this to a function */
  70     anim2 = new QPropertyAnimation(under, "geometry");
  71     anim2->setDuration(duration);
  72     QRectF initial( under->geometry() );
  73     qreal W = initial.width() * scale * 0.33;
  74     qreal H = initial.height() * scale * 0.33;
  75     QRectF end( initial.x() - W, initial.y() -  H, initial.width() * scale,
  76         initial.height() * scale );
  77     anim2->setEndValue(end);
  78     group->addAnimation(anim2);
  79
  80     anim3 = new QPropertyAnimation(under, "scale");
  81     anim3->setDuration( duration );
  82     anim3->setEndValue( scale );
  83     group->addAnimation( anim3 );
  84
  85     animation = group;
  86
  87     connect( animation, SIGNAL( finished() ), this, SLOT( resetPulser() ) );
  88 }
  89
  90
  91 //XXX: if someday exists a C++ compiler that works, use it!
  92 // template <typename TYPE>
  93 // Pulser<TYPE>::Pulser( TYPE *target, qreal duration, qreal scale,
  94 //                       ProxyOpacitySetter *setter )
  95 // {
  96
  97 //     TYPE *under = new TYPE( *target );
  98 //     under->setZValue( target->zValue() - 1 );
  99 //     under->setParentItem( target );
 100 //     QParallelAnimationGroup *group = new QParallelAnimationGroup(this);
 101 //     QPropertyAnimation *anim1 = new QPropertyAnimation(under, "opacity");
 102 //     anim1->setDuration(duration);
 103 //     anim1->setEndValue(0);
 104 //     group->addAnimation(anim1);
 105
 106 //     QPropertyAnimation *anim2 = new QPropertyAnimation(under, "geometry");
 107 //     anim2->setDuration(duration);
 108 //     QRectF end;
 109 //     if ( under->geometry().x() != 0 )
 110 //         end = QRectF( under->geometry().x() - under->geometry().width() * scale,
 111 //                 under->geometry().y() - under->geometry().height() * scale,
 112 //                 under->geometry().width() * scale,
 113 //                 under->geometry().height() * scale );
 114 //     else
 115 //         end = QRectF( under->geometry().width() * -.25,
 116 //                       under->geometry().height() * -.25,
 117 //                 under->geometry().width() * scale,
 118 //                 under->geometry().height() * scale );
 119
 120
 121 //     anim2->setEndValue(end);
 122 //     group->addAnimation(anim2);
 123 //     animation = group;
 124
 125 // }