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tabbar.h

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00001 /*
00002     Copyright 2007 Robert Knight <robertknight@gmail.com>
00003 
00004     This library is free software; you can redistribute it and/or
00005     modify it under the terms of the GNU Library General Public
00006     License as published by the Free Software Foundation; either
00007     version 2 of the License, or (at your option) any later version.
00008 
00009     This library is distributed in the hope that it will be useful,
00010     but WITHOUT ANY WARRANTY; without even the implied warranty of
00011     MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
00012     Library General Public License for more details.
00013 
00014     You should have received a copy of the GNU Library General Public License
00015     along with this library; see the file COPYING.LIB.  If not, write to
00016     the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
00017     Boston, MA 02110-1301, USA.
00018 */
00019 
00020 #ifndef TABBAR_H
00021 #define TABBAR_H
00022 
00023 #include <QTabBar>
00024 #include <QTimer>
00025 
00026 namespace Kickoff
00027 {
00028 
00029 class TabBar : public QTabBar
00030 {
00031     Q_OBJECT
00032 
00033 public:
00034     TabBar(QWidget *parent);
00035 
00039     void setCurrentIndexWithoutAnimation(int index);
00040 
00042     void setSwitchTabsOnHover(bool switchOnHover);
00043     bool switchTabsOnHover() const;
00044     void setAnimateSwitch(bool animateSwitch);
00045     bool animateSwitch();
00046     void setShape( Shape shape );
00047 
00048 protected:
00049     int lastIndex() const;
00050 
00051     // reimplemented from QTabBar
00052     virtual QSize tabSizeHint(int index) const;
00053     virtual void paintEvent(QPaintEvent *event);
00054     virtual void leaveEvent(QEvent *event);
00055     virtual void mouseMoveEvent(QMouseEvent *event);
00056     virtual void resizeEvent(QResizeEvent* event);
00057 
00058     bool isHorizontal() const;
00059     bool isVertical() const;
00060 
00061 protected slots:
00062     void switchToHoveredTab();
00063     void animationFinished();
00064     void startAnimation();
00065     void onValueChanged(qreal val);
00066 
00067 private:
00068     QPainterPath tabPath(const QRect &r);
00069 
00070     static const int TAB_CONTENTS_MARGIN = 6;
00071     int m_hoveredTabIndex;
00072     QTimer m_tabSwitchTimer;
00073     bool m_switchOnHover;
00074     bool m_animateSwitch;
00075     QRect m_currentAnimRect;
00076     int m_lastIndex[2];
00077     qreal m_animProgress;
00078 
00079     QSize tabSize(int index) const;
00080     void storeLastIndex();
00081 };
00082 
00083 }
00084 
00085 #endif // TABBAR_H

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