pulseanimation.cpp

   1 /////////////////////////////////////////////////////////////////////////
   2 // pulseanimation.cpp                                                  //
   3 //                                                                     //
   4 // Copyright(C) 2009 Igor Trindade Oliveira <igor.oliveira@indt.org.br>//
   5 // Copyright(C) 2009 Adenilson Cavalcanti <adenilson.silva@idnt.org.br>//
   6 //                                                                     //
   7 // This library is free software; you can redistribute it and/or       //
   8 // modify it under the terms of the GNU Lesser General Public          //
   9 // License as published by the Free Software Foundation; either        //
  10 // version 2.1 of the License, or (at your option) any later version.  //
  11 //                                                                     //
  12 // This library 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 GNU   //
  15 // Lesser General Public License for more details.                     //
  16 //                                                                     //
  17 // You should have received a copy of the GNU Lesser General Public    //
  18 // License along with this library; if not, write to the Free Software //
  19 // Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA       //
  20 // 02110-1301  USA                                                     //
  21 /////////////////////////////////////////////////////////////////////////
  22 #include "pulseanimation.h"
  23
  24 PulseAnimation::PulseAnimation(QGraphicsWidget *target, QObject *parent)
  25     : QObject(parent), m_inside(false)
  26 {
  27     target->installEventFilter(this);
  28     target->setAcceptHoverEvents(true);
  29
  30     qDebug()<<"here3";
  31
  32     QSequentialAnimationGroup *group = new QSequentialAnimationGroup(this);
  33     QPropertyAnimation *anim1 = new QPropertyAnimation(target, "yScale");
  34     QVariant originalValue = target->property("yScale");
  35     // ### duration etc. should be configurable
  36     anim1->setDuration(50);
  37     anim1->setEndValue(1.40);
  38     group->addAnimation(anim1);
  39     QPropertyAnimation *anim2 = new QPropertyAnimation(target, "yScale");
  40     anim2->setDuration(1250);
  41     anim2->setEndValue(originalValue);
  42     anim2->setEasingCurve(QEasingCurve::OutElastic);
  43     group->addAnimation(anim2);
  44     //QObject::connect(group, SIGNAL(finished()), this, SLOT(onAnimationFinished()));
  45     m_animation = group;
  46 }
  47
  48 bool PulseAnimation::eventFilter(QObject *o, QEvent *e)
  49 {
  50     QGraphicsWidget *widget = qobject_cast<QGraphicsWidget*>(o);
  51     qDebug()<<"here 2";
  52     if (!widget)
  53         return false;
  54     if (e->type() == QEvent::GraphicsSceneHoverEnter) {
  55         m_inside = true;
  56         m_animation->start();
  57     } else if (e->type() == QEvent::GraphicsSceneHoverLeave) {
  58         m_inside = false;
  59     }
  60     return false;
  61 }