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