1 files changed, 150 insertions, 0 deletions
diff --git a/ksysv/kscroller.h b/ksysv/kscroller.h
new file mode 100644
index 0000000..09329f1
--- /dev/null
+++ b/ksysv/kscroller.h
@@ -0,0 +1,150 @@
+// (c) 2000 Peter Putzer
+#ifndef KSCROLLER_H
+#define KSCROLLER_H
+
+#include <qframe.h>
+
+class QScrollBar;
+
+/**
+ * A window that automatically enables scrollbars
+ * if it's smaller than the content.
+ *
+ * @author Peter Putzer <putzer@kde.org>
+ * @version $Id$
+ */
+class KScroller : public QFrame
+{
+  Q_OBJECT
+
+public:
+  /**
+   * Constructor.
+   *
+   * @param parent the parent of this widget (passed on as ususal).
+   * @param name the name of this widget (as above).
+   */
+  KScroller (QWidget* parent = 0L, const char* name = 0L);
+
+  /** 
+   * Destructor.
+   */
+  virtual ~KScroller ();
+
+  /**
+   * @return the vertical scrollbar.
+   */
+  inline QScrollBar* verticalScrollBar () { return mVertical; }
+
+  /**
+   * @return the horizontal scrollbar.
+   */
+  inline QScrollBar* horizontalScrollBar () { return mHorizontal; }
+
+  /**
+   * @return the current content, or 0L if none set.
+   */
+  inline QWidget* content () { return mContent; }
+
+  /**
+   * @return the current corner widget, or 0L if none set.
+   */
+  QWidget* cornerWidget ();
+
+public slots:
+  /**
+   * Sets the content. Ownership is transfered to the scroller, any
+   * previously set content will be deleted!
+   * 
+   * @param content has to be a child of the KScroller.
+   */
+  void setContent (QWidget* content);
+
+  /**
+   * Sets the corner widget (the small widget that's located where the vertical and horizontal scrollbars
+   * allmost meet).
+   *
+   * @param corner has to be a child of the KScroller.
+   */
+  void setCornerWidget (QWidget* corner);
+
+  /**
+   * Update the scrollbars. Call whenever you change the contents minimumSize.
+   */
+  void updateScrollBars ();
+
+protected:
+  /**
+   * Reimplemented for internal reasons, the API is not affected.
+   */
+  virtual void resizeEvent (QResizeEvent*);
+
+  /**
+   * Reimplemented for internal reasons, the API is not affected.
+   */
+  virtual QSize sizeHint() const;
+
+  /**
+   * Reimplemented for internal reasons, the API is not affected.
+   */
+  virtual QSize minimumSizeHint() const;
+
+
+private slots:
+  /**
+   * Scroll vertically.
+   *
+   * @param value is the new slider value.
+   */
+  void scrollVertical (int value);
+
+  /**
+   * Scroll horizontally.
+   *
+   * @param value is the new slider value.
+   */
+  void scrollHorizontal (int value);
+
+private:
+  /**
+   * Set up the horizontal scrollbar.
+   *
+   * @param cw is the width of the content.
+   * @param ch is the height of the content.
+   * @param w is the width of the scroller.
+   * @param h is the height of the scroller.
+   */
+  void setupHorizontal (int cw, int ch, int w, int h);
+
+  /**
+   * Set up the vertical scrollbar
+   *
+   * @param cw is the width of the content.
+   * @param ch is the height of the content.
+   * @param w is the width of the scroller.
+   * @param h is the height of the scroller.
+   */
+  void setupVertical (int cw, int ch, int w, int h);
+
+  /**
+   * Set up the corner widget.
+   *
+   * @param w is the width of the scroller.
+   * @param h is the height of the scroller.
+   */
+  void setupCornerWidget (int w, int h);
+
+  class KScrollerPrivate;
+  KScrollerPrivate* d;
+
+  QScrollBar* mVertical;
+  QScrollBar* mHorizontal;
+  QWidget* mCornerWidget;
+
+  QWidget* mContent;
+  
+  int mVerticalOld;
+  int mHorizontalOld;
+};
+
+#endif // KSCROLLER_H