workspace/libs/plasma/applethandle_p.h

   1 /*
   2  *   Copyright 2007 by Kevin Ottens <ervin@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 #ifndef PLASMA_APPLETHANDLE_P_H
  21 #define PLASMA_APPLETHANDLE_P_H
  22
  23 #include <QtCore/QObject>
  24 #include <QtGui/QGraphicsItem>
  25 #include <QTimer>
  26
  27 #include "phase.h"
  28 #include "svg.h"
  29
  30 namespace Plasma
  31 {
  32 class Applet;
  33 class Containment;
  34
  35 class AppletHandle : public QObject, public QGraphicsItem
  36 {
  37     Q_OBJECT
  38     public:
  39         enum FadeType { FadeIn, FadeOut };
  40         enum ButtonType { NoButton, MoveButton, RotateButton, ConfigureButton, RemoveButton, ResizeButton };
  41
  42         AppletHandle(Containment *parent, Applet *applet);
  43         virtual ~AppletHandle();
  44
  45         Applet *applet() const;
  46
  47         QRectF boundingRect() const;
  48         void paint(QPainter *painter, const QStyleOptionGraphicsItem *option, QWidget *widget = 0);
  49         void startFading(FadeType anim);
  50
  51     protected:
  52         void mousePressEvent(QGraphicsSceneMouseEvent *event);
  53         void mouseReleaseEvent(QGraphicsSceneMouseEvent *event);
  54         void mouseMoveEvent(QGraphicsSceneMouseEvent *event);
  55         void hoverEnterEvent(QGraphicsSceneHoverEvent *event);
  56         void hoverLeaveEvent(QGraphicsSceneHoverEvent *event);
  57         QVariant itemChange(GraphicsItemChange change, const QVariant &value);
  58         bool sceneEventFilter(QGraphicsItem *watched, QEvent *event);
  59
  60     Q_SIGNALS:
  61        void disappearDone(AppletHandle *self);
  62
  63     private Q_SLOTS:
  64         void fadeAnimation(qreal progress);
  65         void appletDestroyed();
  66         void appletResized();
  67         void fadeIn();
  68
  69     private:
  70         static const int HANDLE_WIDTH = 5;
  71         static const int ICON_SIZE = 16;
  72         static const int ICON_MARGIN = 8;
  73
  74         void calculateSize();
  75         ButtonType mapToButton(const QPointF &point) const;
  76         void forceDisappear();
  77         /**
  78          * move our applet to another containment
  79          * @param containment the containment to move to
  80          * @param pos the (scene-relative) position to place it at
  81          */
  82         void switchContainment(Containment *containment, const QPointF &pos);
  83
  84         QRectF m_rect;
  85         ButtonType m_pressedButton;
  86         Containment *m_containment;
  87         Applet *m_applet;
  88         qreal m_opacity;
  89         FadeType m_anim;
  90         Phase::AnimId m_animId;
  91         qreal m_angle;
  92         qreal m_tempAngle;
  93         qreal m_scaleWidth;
  94         qreal m_scaleHeight;
  95         QColor m_gradientColor;
  96         QTimer *m_hoverTimer;
  97         bool m_buttonsOnRight;
  98         bool m_pendingFade;
  99 };
 100
 101 }
 102
 103 #endif // multiple inclusion guard