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152 lines
3.2 KiB
152 lines
3.2 KiB
// (c) 2000 Peter Putzer
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#ifndef KSCROLLER_H
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#define KSCROLLER_H
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#include <tqframe.h>
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class TQScrollBar;
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/**
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* A window that automatically enables scrollbars
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* if it's smaller than the content.
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*
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* @author Peter Putzer <putzer@kde.org>
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* @version $Id$
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*/
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class KScroller : public TQFrame
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{
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Q_OBJECT
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TQ_OBJECT
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public:
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/**
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* Constructor.
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*
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* @param parent the parent of this widget (passed on as ususal).
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* @param name the name of this widget (as above).
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*/
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KScroller (TQWidget* parent = 0L, const char* name = 0L);
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/**
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* Destructor.
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*/
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virtual ~KScroller ();
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/**
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* @return the vertical scrollbar.
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*/
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inline TQScrollBar* verticalScrollBar () { return mVertical; }
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/**
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* @return the horizontal scrollbar.
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*/
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inline TQScrollBar* horizontalScrollBar () { return mHorizontal; }
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/**
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* @return the current content, or 0L if none set.
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*/
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inline TQWidget* content () { return mContent; }
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/**
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* @return the current corner widget, or 0L if none set.
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*/
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TQWidget* cornerWidget ();
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public slots:
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/**
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* Sets the content. Ownership is transfered to the scroller, any
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* previously set content will be deleted!
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*
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* @param content has to be a child of the KScroller.
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*/
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void setContent (TQWidget* content);
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/**
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* Sets the corner widget (the small widget that's located where the vertical and horizontal scrollbars
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* allmost meet).
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*
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* @param corner has to be a child of the KScroller.
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*/
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void setCornerWidget (TQWidget* corner);
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/**
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* Update the scrollbars. Call whenever you change the contents minimumSize.
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*/
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void updateScrollBars ();
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protected:
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/**
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* Reimplemented for internal reasons, the API is not affected.
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*/
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virtual void resizeEvent (TQResizeEvent*);
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/**
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* Reimplemented for internal reasons, the API is not affected.
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*/
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virtual TQSize sizeHint() const;
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/**
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* Reimplemented for internal reasons, the API is not affected.
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*/
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virtual TQSize minimumSizeHint() const;
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private slots:
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/**
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* Scroll vertically.
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*
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* @param value is the new slider value.
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*/
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void scrollVertical (int value);
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/**
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* Scroll horizontally.
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*
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* @param value is the new slider value.
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*/
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void scrollHorizontal (int value);
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private:
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/**
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* Set up the horizontal scrollbar.
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*
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* @param cw is the width of the content.
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* @param ch is the height of the content.
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* @param w is the width of the scroller.
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* @param h is the height of the scroller.
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*/
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void setupHorizontal (int cw, int ch, int w, int h);
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/**
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* Set up the vertical scrollbar
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*
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* @param cw is the width of the content.
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* @param ch is the height of the content.
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* @param w is the width of the scroller.
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* @param h is the height of the scroller.
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*/
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void setupVertical (int cw, int ch, int w, int h);
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/**
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* Set up the corner widget.
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*
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* @param w is the width of the scroller.
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* @param h is the height of the scroller.
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*/
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void setupCornerWidget (int w, int h);
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class KScrollerPrivate;
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KScrollerPrivate* d;
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TQScrollBar* mVertical;
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TQScrollBar* mHorizontal;
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TQWidget* mCornerWidget;
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TQWidget* mContent;
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int mVerticalOld;
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int mHorizontalOld;
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};
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#endif // KSCROLLER_H
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