workspace/plasma/animators/default/defaultAnimator.cpp

   1 /*
   2  *   Copyright 2007 Aaron Seigo <aseigo@kde.org>
   3  *
   4  *   This program is free software; you can redistribute it and/or modify
   5  *   it under the terms of the GNU Library General Public License as
   6  *   published by the Free Software Foundation; either version 2 or
   7  *   (at your option) any later version.
   8  *
   9  *   This program is distributed in the hope that it will be useful,
  10  *   but WITHOUT ANY WARRANTY; without even the implied warranty of
  11  *   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  12  *   GNU General Public License for more details
  13  *
  14  *   You should have received a copy of the GNU Library General Public
  15  *   License along with this program; if not, write to the
  16  *   Free Software Foundation, Inc.,
  17  *   51 Franklin Street, Fifth Floor, Boston, MA  02110-1301, USA.
  18  */
  19
  20 #include "defaultAnimator.h"
  21
  22 #include <QGraphicsItem>
  23 #include <QPainter>
  24
  25 #include <KDebug>
  26
  27 DefaultAnimator::DefaultAnimator(QObject *parent, const QVariantList& list)
  28     : Plasma::AnimationDriver(parent)
  29 {
  30     Q_UNUSED(list)
  31 }
  32
  33 int DefaultAnimator::animationFps(Plasma::Animator::Animation animation) const
  34 {
  35     switch (animation) {
  36         case Plasma::Animator::AppearAnimation:
  37             return 20;
  38         case Plasma::Animator::DisappearAnimation:
  39             return 20;
  40
  41         default:
  42             return 0;
  43     }
  44 }
  45
  46 int DefaultAnimator::elementAnimationFps(Plasma::Animator::Animation animation) const
  47 {
  48     switch (animation) {
  49         case Plasma::Animator::AppearAnimation:
  50             return 20;
  51         case Plasma::Animator::DisappearAnimation:
  52             return 20;
  53
  54         default:
  55             return 0;
  56     }
  57 }
  58
  59 void DefaultAnimator::itemAppear(qreal progress, QGraphicsItem* item)
  60 {
  61     //kDebug() << "DefaultAnimator::appear(" << progress << ", " << item << ")";
  62     if (progress >= 1) {
  63         item->resetTransform();
  64         return;
  65     }
  66     item->resetTransform();
  67     item->scale(progress, progress);
  68     QRectF r = item->boundingRect();
  69     item->translate(r.width() / 2 * progress, r.height() / 2 * progress);
  70 }
  71
  72 void DefaultAnimator::itemDisappear(qreal progress, QGraphicsItem* item)
  73 {
  74     if (progress >= 1) {
  75         //item->resetTransform();
  76         return;
  77     }
  78     item->resetTransform();
  79     item->scale(1-progress,1-progress);
  80     QRectF r = item->boundingRect();
  81     item->translate(r.width() / 2 * progress, r.height() / 2 * progress);
  82 }
  83
  84 QPixmap DefaultAnimator::elementAppear(qreal progress, const QPixmap& pixmap)
  85 {
  86     //kDebug() << progress;
  87     QPixmap pix = pixmap;
  88
  89     if (progress < 1) {
  90         QColor alpha;
  91         alpha.setAlphaF(progress);
  92
  93         QPainter painter(&pix);
  94         painter.setCompositionMode(QPainter::CompositionMode_DestinationIn);
  95         painter.fillRect(pix.rect(), alpha);
  96     }
  97
  98     return pix;
  99 }
 100
 101 QPixmap DefaultAnimator::elementDisappear(qreal progress, const QPixmap& pixmap)
 102 {
 103     //kDebug() << progress;
 104     QPixmap pix = pixmap;
 105
 106     if (progress > 0) {
 107         QColor alpha;
 108         alpha.setAlphaF(1 - progress);
 109
 110         QPainter painter(&pix);
 111         painter.setCompositionMode(QPainter::CompositionMode_DestinationIn);
 112         painter.fillRect(pix.rect(), alpha);
 113     }
 114
 115     return pix;
 116 }
 117
 118 #include "defaultAnimator.moc"