include/wx/gtk/private/event.h

   1 ///////////////////////////////////////////////////////////////////////////////
   2 // Name:        wx/gtk/private/event.h
   3 // Purpose:     Helper functions for working with GDK and wx events
   4 // Author:      Vaclav Slavik
   5 // Created:     2011-10-14
   6 // RCS-ID:      $Id$
   7 // Copyright:   (c) 2011 Vaclav Slavik
   8 // Licence:     wxWindows licence
   9 ///////////////////////////////////////////////////////////////////////////////
  10
  11 #ifndef _GTK_PRIVATE_EVENT_H_
  12 #define _GTK_PRIVATE_EVENT_H_
  13
  14 namespace wxGTKImpl
  15 {
  16
  17 // init wxMouseEvent with the info from GdkEventXXX struct
  18 template<typename T> void InitMouseEvent(wxWindowGTK *win,
  19                                          wxMouseEvent& event,
  20                                          T *gdk_event)
  21 {
  22     event.m_shiftDown = (gdk_event->state & GDK_SHIFT_MASK) != 0;
  23     event.m_controlDown = (gdk_event->state & GDK_CONTROL_MASK) != 0;
  24     event.m_altDown = (gdk_event->state & GDK_MOD1_MASK) != 0;
  25     event.m_metaDown = (gdk_event->state & GDK_META_MASK) != 0;
  26     event.m_leftDown = (gdk_event->state & GDK_BUTTON1_MASK) != 0;
  27     event.m_middleDown = (gdk_event->state & GDK_BUTTON2_MASK) != 0;
  28     event.m_rightDown = (gdk_event->state & GDK_BUTTON3_MASK) != 0;
  29
  30     // In gdk/win32 VK_XBUTTON1 is translated to GDK_BUTTON4_MASK
  31     // and VK_XBUTTON2 to GDK_BUTTON5_MASK. In x11/gdk buttons 4/5
  32     // are wheel rotation and buttons 8/9 don't change the state.
  33     event.m_aux1Down = (gdk_event->state & GDK_BUTTON4_MASK) != 0;
  34     event.m_aux2Down = (gdk_event->state & GDK_BUTTON5_MASK) != 0;
  35
  36     wxPoint pt = win->GetClientAreaOrigin();
  37     event.m_x = (wxCoord)gdk_event->x - pt.x;
  38     event.m_y = (wxCoord)gdk_event->y - pt.y;
  39
  40     if ((win->m_wxwindow) && (win->GetLayoutDirection() == wxLayout_RightToLeft))
  41     {
  42         // origin in the upper right corner
  43         GtkAllocation a;
  44         gtk_widget_get_allocation(win->m_wxwindow, &a);
  45         int window_width = a.width;
  46         event.m_x = window_width - event.m_x;
  47     }
  48
  49     event.SetEventObject( win );
  50     event.SetId( win->GetId() );
  51     event.SetTimestamp( gdk_event->time );
  52 }
  53
  54 } // namespace wxGTKImpl
  55
  56 #endif // _GTK_PRIVATE_EVENT_H_
  57