src/msw/popupwin.cpp

   1 ///////////////////////////////////////////////////////////////////////////////
   2 // Name:        msw/popupwin.cpp
   3 // Purpose:     implements wxPopupWindow for MSW
   4 // Author:      Vadim Zeitlin
   5 // Modified by:
   6 // Created:     08.05.02
   7 // RCS-ID:      $Id$
   8 // Copyright:   (c) 2002 Vadim Zeitlin <zeitlin@dptmaths.ens-cachan.fr>
   9 // License:     wxWindows license
  10 ///////////////////////////////////////////////////////////////////////////////
  11
  12 // ============================================================================
  13 // declarations
  14 // ============================================================================
  15
  16 // ----------------------------------------------------------------------------
  17 // headers
  18 // ----------------------------------------------------------------------------
  19
  20 #ifdef __GNUG__
  21     #pragma implementation "popup.h"
  22 #endif
  23
  24 // For compilers that support precompilation, includes "wx.h".
  25 #include "wx/wxprec.h"
  26
  27 #ifdef __BORLANDC__
  28     #pragma hdrstop
  29 #endif
  30
  31 #ifndef WX_PRECOMP
  32 #endif //WX_PRECOMP
  33
  34 #include "wx/popupwin.h"
  35
  36 #include "wx/msw/private.h"     // for WS_CHILD and WS_POPUP
  37
  38 wxWindowList wxPopupWindow::ms_shownPopups;
  39
  40 // ============================================================================
  41 // implementation
  42 // ============================================================================
  43
  44 bool wxPopupWindow::Create(wxWindow *parent, int flags)
  45 {
  46     return wxPopupWindowBase::Create(parent) &&
  47                wxWindow::Create(parent, -1,
  48                                 wxDefaultPosition, wxDefaultSize,
  49                                 flags | wxPOPUP_WINDOW);
  50 }
  51
  52 void wxPopupWindow::DoGetPosition(int *x, int *y) const
  53 {
  54     // the position of a "top level" window such as this should be in
  55     // screen coordinates, not in the client ones which MSW gives us
  56     // (because we are a child window)
  57     wxPopupWindowBase::DoGetPosition(x, y);
  58
  59     GetParent()->ClientToScreen(x, y);
  60 }
  61
  62 WXDWORD wxPopupWindow::MSWGetStyle(long flags, WXDWORD *exstyle) const
  63 {
  64     // we only hnour the border flags
  65     WXDWORD style = wxWindow::MSWGetStyle(flags & wxBORDER_MASK, exstyle);
  66
  67     // and we mustn't have WS_CHILD style or we would be limited to the parents
  68     // client area
  69     style &= ~WS_CHILD;
  70     style |= WS_POPUP;
  71
  72     if ( exstyle )
  73     {
  74         // a popup window floats on top of everything
  75         *exstyle |= WS_EX_TOPMOST | WS_EX_TOOLWINDOW;
  76     }
  77
  78     return style;
  79 }
  80
  81 bool wxPopupWindow::Show(bool show)
  82 {
  83     // skip wxWindow::Show() which calls wxBringWindowToTop(): this results in
  84     // activating the popup window and stealing the atcivation from our parent
  85     // which means that the parent frame becomes deactivated when opening a
  86     // combobox, for example -- definitely not what we want
  87     if ( !wxWindowBase::Show(show) )
  88         return FALSE;
  89
  90     if ( show )
  91     {
  92         ms_shownPopups.Append(this);
  93     }
  94     else // remove from the shown list
  95     {
  96         ms_shownPopups.DeleteObject(this);
  97     }
  98
  99     ::ShowWindow(GetHwnd(), show ? SW_SHOWNOACTIVATE : SW_HIDE);
 100
 101     return TRUE;
 102 }
 103
 104 /* static */
 105 wxPopupWindow *wxPopupWindow::FindPopupFor(wxWindow *winParent)
 106 {
 107     // find a popup with the given parent in the linked list of all shown
 108     // popups
 109     for ( wxWindowList::Node *node = ms_shownPopups.GetFirst();
 110           node;
 111           node = node->GetNext() )
 112     {
 113         wxWindow *win = node->GetData();
 114         if ( win->GetParent() == winParent )
 115             return (wxPopupWindow *)win;
 116     }
 117
 118     return NULL;
 119 }
 120