koffice/kexi/widget/kexiscrollview.h

/* This file is part of the KDE project
   Copyright (C) 2004 Cedric Pasteur <cedric.pasteur@free.fr>
   Copyright (C) 2004 Jaroslaw Staniek <js@iidea.pl>

   This library is free software; you can redistribute it and/or
   modify it under the terms of the GNU Library General Public
   License as published by the Free Software Foundation; either
   version 2 of the License, or (at your option) any later version.

   This library 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
   Library General Public License for more details.

   You should have received a copy of the GNU Library General Public License
   along with this library; see the file COPYING.LIB.  If not, write to
   the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
 * Boston, MA 02110-1301, USA.
*/

#ifndef KEXISCROLLVIEW_H
#define KEXISCROLLVIEW_H

#include <tqscrollview.h>
#include <tqtimer.h>

class TQColor;
class TQFont;
class KexiRecordNavigator;

//! The scrollview which includes KexiDBForm
/*! It allows to resize its m_widget, following snapToGrid setting. 
 Its contents is resized so the widget can always be resized. */
class KEXIEXTWIDGETS_EXPORT KexiScrollView : public TQScrollView
{
	Q_OBJECT
  TQ_OBJECT

	public:
		KexiScrollView(TQWidget *tqparent, bool preview);
		virtual ~KexiScrollView();

		void setWidget(TQWidget *w);
		void setSnapToGrid(bool enable, int gridSize=10);

		void setResizingEnabled(bool enabled) { m_enableResizing = enabled; }
		void setRecordNavigatorVisible(bool visible);

		void setOuterAreaIndicatorVisible(bool visible)  { m_outerAreaVisible = visible; }

		void refreshContentsSizeLater(bool horizontal, bool vertical);
		void updateNavPanelGeometry();

		KexiRecordNavigator* recordNavigator() const;

		inline bool preview() const { return m_preview; }

	public slots:
		/*! Make sure there is a 300px margin around the form contents to allow resizing. */
		virtual void refreshContentsSize();

	signals:
		void outerAreaClicked();
		void resizingStarted();
		void resizingEnded();

	protected:
		virtual void contentsMousePressEvent(TQMouseEvent * ev);
		virtual void contentsMouseReleaseEvent(TQMouseEvent * ev);
		virtual void contentsMouseMoveEvent(TQMouseEvent * ev);
		virtual void drawContents( TQPainter * p, int clipx, int clipy, int clipw, int cliph );
		virtual void leaveEvent( TQEvent *e );
		virtual void setHBarGeometry( TQScrollBar & hbar, int x, int y, int w, int h );
		void setupPixmapBuffer(TQPixmap& pixmap, const TQString& text, int lines);

		bool m_resizing;
		bool m_enableResizing;
		TQWidget *m_widget;

		int m_gridSize;
		TQFont m_helpFont;
		TQColor m_helpColor;
		TQTimer m_delayedResize;
		//! for refreshContentsSizeLater()
		TQScrollView::ScrollBarMode m_vsmode, m_hsmode;
		bool m_snapToGrid : 1;
		bool m_preview : 1;
		bool m_smodeSet : 1;
		bool m_outerAreaVisible : 1;
		KexiRecordNavigator* m_scrollViewNavPanel;
};

#endif