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 WXDLLEXPORT wxScrollHelperNative : public wxScrollHelper
  20 {
  21 public:
  22     // default ctor doesn't do anything
  23     wxScrollHelperNative(wxWindow *win) : wxScrollHelper(win) { }
  24
  25     virtual void SetScrollbars(int pixelsPerUnitX, int pixelsPerUnitY,
  26                                int noUnitsX, int noUnitsY,
  27                                int xPos = 0, int yPos = 0,
  28                                bool noRefresh = false);
  29     virtual void AdjustScrollbars();
  30     virtual void Scroll(int x, int y);
  31
  32 protected:
  33     // this does (each) half of AdjustScrollbars() work
  34     void DoAdjustScrollbar(GtkRange* range,
  35                            int pixelsPerLine,
  36                            int winSize,
  37                            int virtSize,
  38                            int *pos,
  39                            int *lines,
  40                            int *linesPerPage);
  41
  42     void DoAdjustHScrollbar(int winSize, int virtSize)
  43     {
  44         DoAdjustScrollbar
  45         (
  46             m_win->m_scrollBar[wxWindow::ScrollDir_Horz],
  47             m_xScrollPixelsPerLine, winSize, virtSize,
  48             &m_xScrollPosition, &m_xScrollLines, &m_xScrollLinesPerPage
  49         );
  50     }
  51
  52     void DoAdjustVScrollbar(int winSize, int virtSize)
  53     {
  54         DoAdjustScrollbar
  55         (
  56             m_win->m_scrollBar[wxWindow::ScrollDir_Vert],
  57             m_yScrollPixelsPerLine, winSize, virtSize,
  58             &m_yScrollPosition, &m_yScrollLines, &m_yScrollLinesPerPage
  59         );
  60     }
  61
  62     // and this does the same for Scroll()
  63     void DoScroll(int orient,
  64                   int pos,
  65                   int pixelsPerLine,
  66                   int *posOld);
  67
  68 private:
  69     DECLARE_NO_COPY_CLASS(wxScrollHelperNative)
  70 };
  71
  72 #endif // _WX_GTK_SCROLLWIN_H_
  73