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
  25 protected:
  26     virtual void DoScroll(int x, int y);
  27     virtual void DoShowScrollbars(wxScrollbarVisibility horz,
  28                                   wxScrollbarVisibility vert);
  29
  30 private:
  31     // helper of AdjustScrollbars(): does the work for the single scrollbar
  32     //
  33     // notice that the parameters passed by non-const references are modified
  34     // by this function
  35     void DoAdjustScrollbar(int orient,
  36                            int clientSize,
  37                            int virtSize,
  38                            int pixelsPerUnit,
  39                            int& scrollUnits,
  40                            int& scrollPosition,
  41                            int& scrollLinesPerPage,
  42                            wxScrollbarVisibility visibility);
  43
  44
  45     wxScrollbarVisibility m_xVisibility,
  46                           m_yVisibility;
  47
  48     wxDECLARE_NO_COPY_CLASS(wxScrollHelper);
  49 };
  50
  51 #endif // _WX_GENERIC_SCROLLWIN_H_
  52