pulser.h

   1 /*********************************************************************/
   2 /*                                                                   */
   3 /* Copyright (C)  2009  Adenilson Cavalcanti <>                      */
   4 /*                                                                   */
   5 /* This program is free software; you can redistribute it and/or     */
   6 /* modify it under the terms of the GNU General Public License       */
   7 /* as published by the Free Software Foundation; either version 2    */
   8 /* of the License, or (at your option) any later version.            */
   9 /*                                                                   */
  10 /* This program 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     */
  13 /* GNU General Public License for more details.                      */
  14 /*                                                                   */
  15 /* You should have received a copy of the GNU General Public License */
  16 /* along with this program; if not, write to the Free Software       */
  17 /* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA     */
  18 /* 02110-1301, USA.                                                  */
  19 /*********************************************************************/
  20
  21 #ifndef PULSER_H
  22 #define PULSER_H
  23
  24 #include <QObject>
  25 #include <QGraphicsWidget>
  26
  27 class QAbstractAnimation;
  28 class QEvent;
  29 class ProxyOpacitySetter;
  30 class AItem;
  31 class QPropertyAnimation;
  32
  33 class PulseBase: public QObject
  34 {
  35 Q_OBJECT
  36
  37 public:
  38     PulseBase() { };
  39
  40     void updateGeometry(QRectF updated, qreal zCoordinate = 0, qreal scale = 1.5);
  41
  42     QRectF geometry();
  43
  44     ~PulseBase();
  45
  46 public Q_SLOTS:
  47     void start();
  48     void resetPulser();
  49
  50 protected:
  51
  52     void createAnimation(qreal _duration, qreal _scale,
  53                          ProxyOpacitySetter *_setter);
  54     QAbstractAnimation *animation;
  55     QGraphicsWidget *under;
  56     QRectF *pulseGeometry;
  57     qreal zvalue, mscale;
  58     QPropertyAnimation *anim1, *anim2, *anim3;
  59 };
  60
  61 template <typename TYPE>
  62 class Pulser: public PulseBase
  63 {
  64
  65 public:
  66
  67     Pulser( TYPE *target, qreal scale = 1.5, qreal duration = 500,
  68             ProxyOpacitySetter *setter = 0 )
  69     {
  70         under = new TYPE( *target );
  71         under->setParentItem( target );
  72         zvalue = target->zValue();
  73         --zvalue;
  74         under->setOpacity( 0 );
  75         under->setZValue( zvalue );
  76         mscale = under->scale();
  77         createAnimation(duration, scale, setter);
  78     }
  79
  80 };
  81
  82 #endif