workspace/plasma/applets/pager/pager.h

   1 /***************************************************************************
   2  *   Copyright (C) 2007 by Daniel Laidig <d.laidig@gmx.de>                 *
   3  *                                                                         *
   4  *   This program is free software; you can redistribute it and/or modify  *
   5  *   it under the terms of the GNU General Public License as published by  *
   6  *   the Free Software Foundation; either version 2 of the License, 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 General Public License     *
  15  *   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 PAGER_H
  21 #define PAGER_H
  22
  23 #include <QLabel>
  24 #include <QGraphicsSceneHoverEvent>
  25 #include <QList>
  26
  27 #include <Plasma/Applet>
  28 #include <Plasma/DataEngine>
  29 #include "ui_pagerConfig.h"
  30
  31 class KDialog;
  32 class KSelectionOwner;
  33 class KColorScheme;
  34 class KWindowInfo;
  35
  36 namespace Plasma
  37 {
  38     class FrameSvg;
  39 }
  40
  41 class Pager : public Plasma::Applet
  42 {
  43     Q_OBJECT
  44     public:
  45         Pager(QObject *parent, const QVariantList &args);
  46         ~Pager();
  47         void init();
  48         void paintInterface(QPainter *painter, const QStyleOptionGraphicsItem *option,
  49                             const QRect &contents);
  50         void constraintsEvent(Plasma::Constraints);
  51         virtual QList<QAction*> contextualActions();
  52
  53     public slots:
  54         void recalculateGeometry();
  55         void recalculateWindowRects();
  56         void themeRefresh();
  57
  58     protected slots:
  59         virtual void mousePressEvent(QGraphicsSceneMouseEvent *event);
  60         virtual void mouseMoveEvent(QGraphicsSceneMouseEvent *event);
  61         virtual void mouseReleaseEvent(QGraphicsSceneMouseEvent *event);
  62         virtual void hoverEnterEvent(QGraphicsSceneHoverEvent *event);
  63         virtual void hoverMoveEvent(QGraphicsSceneHoverEvent *event);
  64         virtual void hoverLeaveEvent(QGraphicsSceneHoverEvent *event);
  65         virtual void dragEnterEvent(QGraphicsSceneDragDropEvent *event);
  66         virtual void dragMoveEvent(QGraphicsSceneDragDropEvent *event);
  67         virtual void dragLeaveEvent(QGraphicsSceneDragDropEvent *event);
  68         virtual void dropEvent(QGraphicsSceneDragDropEvent *event);
  69         virtual void wheelEvent(QGraphicsSceneWheelEvent *);
  70
  71         void configAccepted();
  72         void currentDesktopChanged(int desktop);
  73         void desktopsSizeChanged();
  74         void windowAdded(WId id);
  75         void windowRemoved(WId id);
  76         void activeWindowChanged(WId id);
  77         void numberOfDesktopsChanged(int num);
  78         void desktopNamesChanged();
  79         void stackingOrderChanged();
  80         void windowChanged(WId id, unsigned int properties);
  81         void showingDesktopChanged(bool showing);
  82         void slotConfigureDesktop();
  83         void lostDesktopLayoutOwner();
  84         void animationUpdate(qreal progress, int animId);
  85         void dragSwitch();
  86
  87     protected:
  88         void createMenu();
  89         KColorScheme *colorScheme();
  90         QRect fixViewportPosition( const QRect& r );
  91         void createConfigurationInterface(KConfigDialog *parent);
  92         void handleHoverMove(const QPointF& pos);
  93         void handleHoverLeave();
  94         void updateToolTip();
  95
  96     private:
  97         QTimer* m_timer;
  98         Ui::pagerConfig ui;
  99         enum DisplayedText
 100         {
 101             Number,
 102             Name,
 103             None
 104         };
 105
 106         struct AnimInfo
 107         {
 108             int animId;
 109             qreal alpha;
 110             bool fadeIn;
 111             bool operator == (AnimInfo otherAnim) const { return otherAnim.animId == animId; }
 112         };
 113
 114         DisplayedText m_displayedText;
 115         bool m_showWindowIcons;
 116         bool m_showOwnBackground;
 117         int m_rows;
 118         int m_columns;
 119         int m_desktopCount;
 120         int m_currentDesktop;
 121         qreal m_widthScaleFactor;
 122         qreal m_heightScaleFactor;
 123         QSizeF m_size;
 124         QList<QRectF> m_rects;
 125         //list of info about animations for each desktop
 126         QList<AnimInfo> m_animations;
 127         QRectF m_hoverRect;
 128         int m_hoverIndex;
 129         QList<QList<QPair<WId, QRect> > > m_windowRects;
 130         QList<QRect> m_activeWindows;
 131         QList<QAction*> m_actions;
 132         QList<KWindowInfo> m_windowInfo;
 133         KSelectionOwner* m_desktopLayoutOwner;
 134         Plasma::FrameSvg *m_background;
 135         KColorScheme *m_colorScheme;
 136
 137         // dragging of windows
 138         QRect m_dragOriginal;
 139         QPointF m_dragOriginalPos;
 140         QPointF m_dragCurrentPos;
 141         WId m_dragId;
 142         int m_dirtyDesktop;
 143         int m_dragStartDesktop;
 144         int m_dragHighlightedDesktop;
 145
 146         // desktop switching on drop event
 147         int m_dragSwitchDesktop;
 148         QTimer* m_dragSwitchTimer;
 149
 150         static const int s_FadeInDuration = 50;
 151         static const int s_FadeOutDuration = 100;
 152     };
 153
 154 K_EXPORT_PLASMA_APPLET(pager, Pager)
 155
 156 #endif