include/wx/generic/scrolwin.h

   1 /////////////////////////////////////////////////////////////////////////////
   2 // Name:        wx/generic/scrolwin.h
   3 // Purpose:     generic wxScrollHelper
   4 // Author:      Vadim Zeitlin
   5 // Created:     2008-12-24 (replacing old file with the same name)
   6 // Copyright:   (c) 2008 Vadim Zeitlin <vadim@wxwidgets.org>
   7 // Licence:     wxWindows licence
   8 /////////////////////////////////////////////////////////////////////////////
   9
  10 #ifndef _WX_GENERIC_SCROLLWIN_H_
  11 #define _WX_GENERIC_SCROLLWIN_H_
  12
  13 // ----------------------------------------------------------------------------
  14 // generic wxScrollHelper implementation
  15 // ----------------------------------------------------------------------------
  16
  17 class WXDLLIMPEXP_CORE wxScrollHelper : public wxScrollHelperBase
  18 {
  19 public:
  20     wxScrollHelper(wxWindow *winToScroll);
  21
  22     // implement base class pure virtuals
  23     virtual void AdjustScrollbars();
  24     virtual bool IsScrollbarShown(int orient) const;
  25
  26 protected:
  27     virtual void DoScroll(int x, int y);
  28     virtual void DoShowScrollbars(wxScrollbarVisibility horz,
  29                                   wxScrollbarVisibility vert);
  30
  31 private:
  32     // helper of AdjustScrollbars(): does the work for the single scrollbar
  33     //
  34     // notice that the parameters passed by non-const references are modified
  35     // by this function
  36     void DoAdjustScrollbar(int orient,
  37                            int clientSize,
  38                            int virtSize,
  39                            int pixelsPerUnit,
  40                            int& scrollUnits,
  41                            int& scrollPosition,
  42                            int& scrollLinesPerPage,
  43                            wxScrollbarVisibility visibility);
  44
  45
  46     wxScrollbarVisibility m_xVisibility,
  47                           m_yVisibility;
  48
  49     wxDECLARE_NO_COPY_CLASS(wxScrollHelper);
  50 };
  51
  52 #endif // _WX_GENERIC_SCROLLWIN_H_
  53