src/gtk/popupwin.cpp

   1 /////////////////////////////////////////////////////////////////////////////
   2 // Name:        src/gtk/popupwin.cpp
   3 // Purpose:
   4 // Author:      Robert Roebling
   5 // Id:          $Id$
   6 // Copyright:   (c) 1998 Robert Roebling
   7 // Licence:     wxWindows licence
   8 /////////////////////////////////////////////////////////////////////////////
   9
  10 // For compilers that support precompilation, includes "wx.h".
  11 #include "wx/wxprec.h"
  12
  13 #if wxUSE_POPUPWIN
  14
  15 #include "wx/popupwin.h"
  16
  17 #ifndef WX_PRECOMP
  18 #endif // WX_PRECOMP
  19
  20 #include <gtk/gtk.h>
  21
  22 #include "wx/gtk/win_gtk.h"
  23
  24 //-----------------------------------------------------------------------------
  25 // "button_press"
  26 //-----------------------------------------------------------------------------
  27
  28 extern "C" {
  29 static gint gtk_popup_button_press (GtkWidget *widget, GdkEvent *gdk_event, wxPopupWindow* win )
  30 {
  31     GtkWidget *child = gtk_get_event_widget (gdk_event);
  32
  33     /* Ignore events sent out before we connected to the signal */
  34     if (win->m_time >= ((GdkEventButton*)gdk_event)->time)
  35         return FALSE;
  36
  37     /*  We don't ask for button press events on the grab widget, so
  38      *  if an event is reported directly to the grab widget, it must
  39      *  be on a window outside the application (and thus we remove
  40      *  the popup window). Otherwise, we check if the widget is a child
  41      *  of the grab widget, and only remove the popup window if it
  42      *  is not. */
  43     if (child != widget)
  44     {
  45         while (child)
  46         {
  47             if (child == widget)
  48                 return FALSE;
  49             child = child->parent;
  50         }
  51     }
  52
  53     wxFocusEvent event( wxEVT_KILL_FOCUS, win->GetId() );
  54     event.SetEventObject( win );
  55
  56     (void)win->GetEventHandler()->ProcessEvent( event );
  57
  58     return TRUE;
  59 }
  60 }
  61
  62 //-----------------------------------------------------------------------------
  63 // "delete_event"
  64 //-----------------------------------------------------------------------------
  65
  66 extern "C" {
  67 bool gtk_dialog_delete_callback( GtkWidget *WXUNUSED(widget), GdkEvent *WXUNUSED(event), wxPopupWindow *win )
  68 {
  69     if (win->IsEnabled())
  70         win->Close();
  71
  72     return TRUE;
  73 }
  74 }
  75
  76 //-----------------------------------------------------------------------------
  77 // "realize" from m_widget
  78 //-----------------------------------------------------------------------------
  79
  80 /* we cannot MWM hints and icons before the widget has been realized,
  81    so we do this directly after realization */
  82
  83 extern "C" {
  84 static gint
  85 gtk_dialog_realized_callback( GtkWidget * WXUNUSED(widget), wxPopupWindow *win )
  86 {
  87     /* all this is for Motif Window Manager "hints" and is supposed to be
  88        recognized by other WM as well. not tested. */
  89     long decor = (long) GDK_DECOR_BORDER;
  90     long func = (long) GDK_FUNC_MOVE ;
  91
  92     gdk_window_set_decorations( win->m_widget->window, (GdkWMDecoration)decor);
  93     gdk_window_set_functions( win->m_widget->window, (GdkWMFunction)func);
  94
  95     gtk_window_set_resizable(GTK_WINDOW(win->m_widget), FALSE);
  96
  97     return FALSE;
  98 }
  99 }
 100
 101 //-----------------------------------------------------------------------------
 102 // InsertChild for wxPopupWindow
 103 //-----------------------------------------------------------------------------
 104
 105 /* Callback for wxFrame. This very strange beast has to be used because
 106  * C++ has no virtual methods in a constructor. We have to emulate a
 107  * virtual function here as wxWidgets requires different ways to insert
 108  * a child in container classes. */
 109
 110 static void wxInsertChildInPopupWin(wxWindowGTK* parent, wxWindowGTK* child)
 111 {
 112     gtk_widget_set_size_request(
 113         child->m_widget, child->m_width, child->m_height);
 114     gtk_fixed_put(
 115         GTK_FIXED(parent->m_wxwindow), child->m_widget, child->m_x, child->m_y);
 116
 117     if (parent->HasFlag(wxTAB_TRAVERSAL))
 118     {
 119         /* we now allow a window to get the focus as long as it
 120            doesn't have any children. */
 121         GTK_WIDGET_UNSET_FLAGS( parent->m_wxwindow, GTK_CAN_FOCUS );
 122     }
 123 }
 124
 125 //-----------------------------------------------------------------------------
 126 // wxPopupWindow
 127 //-----------------------------------------------------------------------------
 128
 129 #ifdef __WXUNIVERSAL__
 130 BEGIN_EVENT_TABLE(wxPopupWindow,wxPopupWindowBase)
 131     EVT_SIZE(wxPopupWindow::OnSize)
 132 END_EVENT_TABLE()
 133 #endif
 134
 135 wxPopupWindow::~wxPopupWindow()
 136 {
 137 }
 138
 139 bool wxPopupWindow::Create( wxWindow *parent, int style )
 140 {
 141     if (!PreCreation( parent, wxDefaultPosition, wxDefaultSize ) ||
 142         !CreateBase( parent, -1, wxDefaultPosition, wxDefaultSize, style, wxDefaultValidator, wxT("popup") ))
 143     {
 144         wxFAIL_MSG( wxT("wxPopupWindow creation failed") );
 145         return false;
 146     }
 147
 148     // Unlike windows, top level windows are created hidden by default.
 149     m_isShown = false;
 150
 151     // All dialogs should really have this style
 152     m_windowStyle |= wxTAB_TRAVERSAL;
 153
 154     m_insertCallback = wxInsertChildInPopupWin;
 155
 156     m_widget = gtk_window_new( GTK_WINDOW_POPUP );
 157
 158     if ((m_parent) && (GTK_IS_WINDOW(m_parent->m_widget)))
 159         gtk_window_set_transient_for( GTK_WINDOW(m_widget), GTK_WINDOW(m_parent->m_widget) );
 160
 161     GTK_WIDGET_UNSET_FLAGS( m_widget, GTK_CAN_FOCUS );
 162
 163     g_signal_connect (m_widget, "delete_event",
 164                       G_CALLBACK (gtk_dialog_delete_callback), this);
 165
 166     m_wxwindow = wxPizza::New(m_windowStyle);
 167     gtk_widget_show( m_wxwindow );
 168     GTK_WIDGET_UNSET_FLAGS( m_wxwindow, GTK_CAN_FOCUS );
 169
 170     gtk_container_add( GTK_CONTAINER(m_widget), m_wxwindow );
 171
 172     if (m_parent) m_parent->AddChild( this );
 173
 174     PostCreation();
 175
 176     /*  we cannot set MWM hints  before the widget has
 177         been realized, so we do this directly after realization */
 178     g_signal_connect (m_widget, "realize",
 179                       G_CALLBACK (gtk_dialog_realized_callback), this);
 180
 181     m_time = gtk_get_current_event_time();
 182
 183     g_signal_connect (m_widget, "button_press_event",
 184                       G_CALLBACK (gtk_popup_button_press), this);
 185
 186     return true;
 187 }
 188
 189 void wxPopupWindow::DoMoveWindow(int WXUNUSED(x), int WXUNUSED(y), int WXUNUSED(width), int WXUNUSED(height) )
 190 {
 191     wxFAIL_MSG( wxT("DoMoveWindow called for wxPopupWindow") );
 192 }
 193
 194 void wxPopupWindow::DoSetSize( int x, int y, int width, int height, int sizeFlags )
 195 {
 196     wxASSERT_MSG( (m_widget != NULL), wxT("invalid dialog") );
 197     wxASSERT_MSG( (m_wxwindow != NULL), wxT("invalid dialog") );
 198
 199     int old_x = m_x;
 200     int old_y = m_y;
 201
 202     int old_width = m_width;
 203     int old_height = m_height;
 204
 205     if (x != -1 || (sizeFlags & wxSIZE_ALLOW_MINUS_ONE))
 206         m_x = x;
 207     if (y != -1 || (sizeFlags & wxSIZE_ALLOW_MINUS_ONE))
 208         m_y = y;
 209     if (width != -1)
 210         m_width = width;
 211     if (height != -1)
 212         m_height = height;
 213
 214     ConstrainSize();
 215
 216     if ((m_x != -1) || (m_y != -1))
 217     {
 218         if ((m_x != old_x) || (m_y != old_y))
 219         {
 220             gtk_window_move( GTK_WINDOW(m_widget), m_x, m_y );
 221         }
 222     }
 223
 224     if ((m_width != old_width) || (m_height != old_height))
 225     {
 226         // gtk_window_resize does not work for GTK_WINDOW_POPUP
 227         gtk_widget_set_size_request( m_widget, m_width, m_height );
 228         wxSizeEvent event(GetSize(), GetId());
 229         event.SetEventObject(this);
 230         GetEventHandler()->ProcessEvent(event);
 231     }
 232 }
 233
 234 bool wxPopupWindow::Show( bool show )
 235 {
 236     if (show && !IsShown())
 237     {
 238         wxSizeEvent event(GetSize(), GetId());
 239         event.SetEventObject(this);
 240         GetEventHandler()->ProcessEvent(event);
 241     }
 242
 243     bool ret = wxWindow::Show( show );
 244
 245     return ret;
 246 }
 247
 248 #endif // wxUSE_POPUPWIN