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 public:
  22     // default ctor doesn't do anything
  23     wxScrollHelper(wxWindow *win) : wxScrollHelperBase(win) { }
  24
  25     // implement the base class methods
  26     virtual void SetScrollbars(int pixelsPerUnitX, int pixelsPerUnitY,
  27                                int noUnitsX, int noUnitsY,
  28                                int xPos = 0, int yPos = 0,
  29                                bool noRefresh = false);
  30     virtual void AdjustScrollbars();
  31
  32 protected:
  33     virtual void DoScroll(int x, int y);
  34     virtual void DoShowScrollbars(wxScrollbarVisibility horz,
  35                                   wxScrollbarVisibility vert);
  36
  37 private:
  38     // this does (each) half of AdjustScrollbars() work
  39     void DoAdjustScrollbar(GtkRange* range,
  40                            int pixelsPerLine,
  41                            int winSize,
  42                            int virtSize,
  43                            int *pos,
  44                            int *lines,
  45                            int *linesPerPage);
  46
  47     void DoAdjustHScrollbar(int winSize, int virtSize)
  48     {
  49         DoAdjustScrollbar
  50         (
  51             m_win->m_scrollBar[wxWindow::ScrollDir_Horz],
  52             m_xScrollPixelsPerLine, winSize, virtSize,
  53             &m_xScrollPosition, &m_xScrollLines, &m_xScrollLinesPerPage
  54         );
  55     }
  56
  57     void DoAdjustVScrollbar(int winSize, int virtSize)
  58     {
  59         DoAdjustScrollbar
  60         (
  61             m_win->m_scrollBar[wxWindow::ScrollDir_Vert],
  62             m_yScrollPixelsPerLine, winSize, virtSize,
  63             &m_yScrollPosition, &m_yScrollLines, &m_yScrollLinesPerPage
  64         );
  65     }
  66
  67     // and this does the same for Scroll()
  68     void DoScrollOneDir(int orient,
  69                         int pos,
  70                         int pixelsPerLine,
  71                         int *posOld);
  72
  73 private:
  74     DECLARE_NO_COPY_CLASS(wxScrollHelper)
  75 };
  76
  77 #endif // _WX_GTK_SCROLLWIN_H_
  78