include/wx/popupwin.h

   1 ///////////////////////////////////////////////////////////////////////////////
   2 // Name:        wx/popupwin.h
   3 // Purpose:     wxPopupWindow interface declaration
   4 // Author:      Vadim Zeitlin
   5 // Modified by:
   6 // Created:     06.01.01
   7 // RCS-ID:      $Id$
   8 // Copyright:   (c) 2001 Vadim Zeitlin <zeitlin@dptmaths.ens-cachan.fr>
   9 // License:     wxWindows licence
  10 ///////////////////////////////////////////////////////////////////////////////
  11
  12 #ifndef _WX_POPUPWIN_H_BASE_
  13 #define _WX_POPUPWIN_H_BASE_
  14
  15 #if defined(__GNUG__) && !defined(NO_GCC_PRAGMA)
  16     #pragma interface "popupwinbase.h"
  17 #endif
  18
  19 #include "wx/defs.h"
  20
  21 #if wxUSE_POPUPWIN
  22
  23 #include "wx/window.h"
  24
  25 // ----------------------------------------------------------------------------
  26 // wxPopupWindow: a special kind of top level window used for popup menus,
  27 // combobox popups and such.
  28 // ----------------------------------------------------------------------------
  29
  30 class WXDLLEXPORT wxPopupWindowBase : public wxWindow
  31 {
  32 public:
  33     wxPopupWindowBase() { }
  34     virtual ~wxPopupWindowBase();
  35
  36     // create the popup window
  37     //
  38     // style may only contain border flags
  39     bool Create(wxWindow *parent, int style = wxBORDER_NONE);
  40
  41     // move the popup window to the right position, i.e. such that it is
  42     // entirely visible
  43     //
  44     // the popup is positioned at ptOrigin + size if it opens below and to the
  45     // right (default), at ptOrigin - sizePopup if it opens above and to the
  46     // left &c
  47     //
  48     // the point must be given in screen coordinates!
  49     virtual void Position(const wxPoint& ptOrigin,
  50                           const wxSize& size);
  51
  52     virtual bool IsTopLevel() const { return true; }
  53
  54     DECLARE_NO_COPY_CLASS(wxPopupWindowBase)
  55 };
  56
  57
  58 // include the real class declaration
  59 #ifdef __WXMSW__
  60     #include "wx/msw/popupwin.h"
  61 #elif __WXPM__
  62     #include "wx/os2/popupwin.h"
  63 #elif __WXGTK__
  64     #include "wx/gtk/popupwin.h"
  65 #elif __WXX11__
  66     #include "wx/x11/popupwin.h"
  67 #elif __WXMOTIF__
  68     #include "wx/motif/popupwin.h"
  69 #elif __WXMGL__
  70     #include "wx/mgl/popupwin.h"
  71 #else
  72     #error "wxPopupWindow is not supported under this platform."
  73 #endif
  74
  75 // ----------------------------------------------------------------------------
  76 // wxPopupTransientWindow: a wxPopupWindow which disappears automatically
  77 // when the user clicks mouse outside it or if it loses focus in any other way
  78 // ----------------------------------------------------------------------------
  79
  80 class WXDLLEXPORT wxPopupWindowHandler;
  81 class WXDLLEXPORT wxPopupFocusHandler;
  82
  83 class WXDLLEXPORT wxPopupTransientWindow : public wxPopupWindow
  84 {
  85 public:
  86     // ctors
  87     wxPopupTransientWindow() { Init(); }
  88     wxPopupTransientWindow(wxWindow *parent, int style = wxBORDER_NONE);
  89
  90     virtual ~wxPopupTransientWindow();
  91
  92     // popup the window (this will show it too) and keep focus at winFocus
  93     // (or itself if it's NULL), dismiss the popup if we lose focus
  94     virtual void Popup(wxWindow *focus = NULL);
  95
  96     // hide the window
  97     virtual void Dismiss();
  98
  99     // can the window be dismissed now?
 100     //
 101     // VZ: where is this used??
 102     virtual bool CanDismiss()
 103         { return true; }
 104
 105     // called when a mouse is pressed while the popup is shown: return true
 106     // from here to prevent its normal processing by the popup (which consists
 107     // in dismissing it if the mouse is cilcked outside it)
 108     virtual bool ProcessLeftDown(wxMouseEvent& event);
 109
 110     // Overridden to grab the input on some plaforms
 111     virtual bool Show( bool show = true );
 112
 113 protected:
 114     // common part of all ctors
 115     void Init();
 116
 117     // this is called when the popup is disappeared because of anything
 118     // else but direct call to Dismiss()
 119     virtual void OnDismiss();
 120
 121     // dismiss and notify the derived class
 122     void DismissAndNotify();
 123
 124     // remove our event handlers
 125     void PopHandlers();
 126
 127     // get alerted when child gets deleted from under us
 128     void OnDestroy(wxWindowDestroyEvent& event);
 129
 130     // the child of this popup if any
 131     wxWindow *m_child;
 132
 133     // the window which has the focus while we're shown
 134     wxWindow *m_focus;
 135
 136     // these classes may call our DismissAndNotify()
 137     friend class wxPopupWindowHandler;
 138     friend class wxPopupFocusHandler;
 139
 140     // the handlers we created, may be NULL (if not, must be deleted)
 141     wxPopupWindowHandler *m_handlerPopup;
 142     wxPopupFocusHandler  *m_handlerFocus;
 143
 144     DECLARE_DYNAMIC_CLASS(wxPopupTransientWindow)
 145     DECLARE_NO_COPY_CLASS(wxPopupTransientWindow)
 146 };
 147
 148 #if wxUSE_COMBOBOX && defined(__WXUNIVERSAL__)
 149
 150 // ----------------------------------------------------------------------------
 151 // wxPopupComboWindow: wxPopupTransientWindow used by wxComboBox
 152 // ----------------------------------------------------------------------------
 153
 154 class WXDLLEXPORT wxComboBox;
 155 class WXDLLEXPORT wxComboControl;
 156
 157 class WXDLLEXPORT wxPopupComboWindow : public wxPopupTransientWindow
 158 {
 159 public:
 160     wxPopupComboWindow() { m_combo = NULL; }
 161     wxPopupComboWindow(wxComboControl *parent);
 162
 163     bool Create(wxComboControl *parent);
 164
 165     // position the window correctly relatively to the combo
 166     void PositionNearCombo();
 167
 168 protected:
 169     // notify the combo here
 170     virtual void OnDismiss();
 171
 172     // forward the key presses to the combobox
 173     void OnKeyDown(wxKeyEvent& event);
 174
 175     // the parent combobox
 176     wxComboControl *m_combo;
 177
 178     DECLARE_EVENT_TABLE()
 179     DECLARE_DYNAMIC_CLASS(wxPopupComboWindow)
 180 };
 181
 182 #endif // wxUSE_COMBOBOX && defined(__WXUNIVERSAL__)
 183
 184 #endif // wxUSE_POPUPWIN
 185
 186 #endif // _WX_POPUPWIN_H_BASE_
 187