Copy the KDE 3.5 branch to branches/trinity for new KDE 3.5 features.

BUG:215923


git-svn-id: svn://anonsvn.kde.org/home/kde/branches/trinity/kdegraphics@1054174 283d02a7-25f6-0310-bc7c-ecb5cbfe19da

1 files changed, 105 insertions, 0 deletions

diff --git a/kghostview/kgvpageview.h b/kghostview/kgvpageview.h
new file mode 100644
index 00000000..9a1abac3
--- /dev/null
+++ b/kghostview/kgvpageview.h
@@ -0,0 +1,105 @@
+/** 
+ * Copyright (C) 2001-2002 the KGhostView authors. See file AUTHORS.
+ * 	
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301, USA.
+ */
+
+
+#ifndef KGVPAGEVIEW_H
+#define KGVPAGEVIEW_H
+
+#include <qscrollview.h>
+
+/**
+ * KGVPageView is a customized QScrollView, which can hold one page. This page
+ * will be centered on the viewport. Furthermore it adds the ability to scroll
+ * the page by dragging it using the mouse.
+ */
+class KGVPageView : public QScrollView
+{
+    Q_OBJECT
+
+public:
+    KGVPageView( QWidget* parent = 0, const char* name = 0 );
+    ~KGVPageView() { ; }
+    
+    void setPage( QWidget* );
+    QWidget* page() const { return _page; }
+   
+    /**
+     * Return true if the top resp. bottom of the page is visible.
+     */
+    bool atTop()    const;
+    bool atBottom() const;
+    
+    /**
+     * Turn the scrollbars on/off.
+     */
+    void enableScrollBars( bool);
+    
+    /**
+     * @reimplemented
+     */
+    bool eventFilter( QObject*, QEvent* );
+    
+public slots:
+    bool readUp();
+    bool readDown();
+    void scrollUp();
+    void scrollDown();
+    void scrollRight();
+    void scrollLeft();
+    void scrollBottom();
+    void scrollTop();
+  
+signals:
+    void viewSizeChanged( const QSize& );
+    void pageSizeChanged( const QSize& );
+    void nextPage();
+    void zoomOut();
+    void zoomIn();
+    void prevPage();
+    void rightClick();
+    void ReadUp();
+    void ReadDown();
+
+protected:
+    virtual void keyPressEvent( QKeyEvent* );
+
+    /**
+     * Reimplemented to from QScrollView to make sure that the page is centered
+     * when it fits in the viewport.
+     */
+    virtual void viewportResizeEvent( QResizeEvent* );
+
+    virtual void mousePressEvent( QMouseEvent *e );
+    virtual void mouseReleaseEvent( QMouseEvent *e );
+    virtual void mouseMoveEvent( QMouseEvent *e );
+    virtual void wheelEvent( QWheelEvent * );
+
+    /**
+     * If the viewport is larger than the page, center the page on the
+     * viewport.
+     */
+    void centerContents();
+
+private:
+    QPoint   _dragGrabPos;
+    QWidget* _page;
+};
+
+#endif
+
+// vim:sw=4:sts=4:ts=8:noet