include/wx/gtk/scrolwin.h

   1 /////////////////////////////////////////////////////////////////////////////
   2 // Name:        wx/gtk/scrolwin.h
   3 // Purpose:     wxScrolledWindow class
   4 // Author:      Robert Roebling
   5 // Modified by: Vadim Zeitlin (2005-10-10): wxScrolledWindow is now common
   6 // Created:     01/02/97
   7 // RCS-ID:      $Id$
   8 // Copyright:   (c) Robert Roebling
   9 // Licence:     wxWindows licence
  10 /////////////////////////////////////////////////////////////////////////////
  11
  12 #ifndef _WX_GTK_SCROLLWIN_H_
  13 #define _WX_GTK_SCROLLWIN_H_
  14
  15 // ----------------------------------------------------------------------------
  16 // wxScrolledWindow
  17 // ----------------------------------------------------------------------------
  18
  19 class WXDLLIMPEXP_CORE wxScrollHelper : public wxScrollHelperBase
  20 {
  21     typedef wxScrollHelperBase base_type;
  22 public:
  23     // default ctor doesn't do anything
  24     wxScrollHelper(wxWindow *win) : wxScrollHelperBase(win) { }
  25
  26     // implement the base class methods
  27     virtual void SetScrollbars(int pixelsPerUnitX, int pixelsPerUnitY,
  28                                int noUnitsX, int noUnitsY,
  29                                int xPos = 0, int yPos = 0,
  30                                bool noRefresh = false);
  31     virtual void AdjustScrollbars();
  32
  33 protected:
  34     virtual void DoScroll(int x, int y);
  35     virtual void DoShowScrollbars(wxScrollbarVisibility horz,
  36                                   wxScrollbarVisibility vert);
  37
  38 private:
  39     // this does (each) half of AdjustScrollbars() work
  40     void DoAdjustScrollbar(GtkRange* range,
  41                            int pixelsPerLine,
  42                            int winSize,
  43                            int virtSize,
  44                            int *pos,
  45                            int *lines,
  46                            int *linesPerPage);
  47
  48     void DoAdjustHScrollbar(int winSize, int virtSize)
  49     {
  50         DoAdjustScrollbar
  51         (
  52             m_win->m_scrollBar[wxWindow::ScrollDir_Horz],
  53             m_xScrollPixelsPerLine, winSize, virtSize,
  54             &m_xScrollPosition, &m_xScrollLines, &m_xScrollLinesPerPage
  55         );
  56     }
  57
  58     void DoAdjustVScrollbar(int winSize, int virtSize)
  59     {
  60         DoAdjustScrollbar
  61         (
  62             m_win->m_scrollBar[wxWindow::ScrollDir_Vert],
  63             m_yScrollPixelsPerLine, winSize, virtSize,
  64             &m_yScrollPosition, &m_yScrollLines, &m_yScrollLinesPerPage
  65         );
  66     }
  67
  68     // and this does the same for Scroll()
  69     void DoScrollOneDir(int orient,
  70                         int pos,
  71                         int pixelsPerLine,
  72                         int *posOld);
  73
  74     wxDECLARE_NO_COPY_CLASS(wxScrollHelper);
  75 };
  76
  77 #endif // _WX_GTK_SCROLLWIN_H_
  78