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     #include "wx/app.h"
  19     #include "wx/frame.h"
  20     #include "wx/cursor.h"
  21 #endif // WX_PRECOMP
  22
  23 #include <gtk/gtk.h>
  24
  25 #include "wx/gtk/win_gtk.h"
  26
  27 //-----------------------------------------------------------------------------
  28 // "button_press"
  29 //-----------------------------------------------------------------------------
  30
  31 extern "C" {
  32 static gint gtk_popup_button_press (GtkWidget *widget, GdkEvent *gdk_event, wxPopupWindow* win )
  33 {
  34     GtkWidget *child = gtk_get_event_widget (gdk_event);
  35
  36     /* Ignore events sent out before we connected to the signal */
  37     if (win->m_time >= ((GdkEventButton*)gdk_event)->time)
  38         return FALSE;
  39
  40     /*  We don't ask for button press events on the grab widget, so
  41      *  if an event is reported directly to the grab widget, it must
  42      *  be on a window outside the application (and thus we remove
  43      *  the popup window). Otherwise, we check if the widget is a child
  44      *  of the grab widget, and only remove the popup window if it
  45      *  is not. */
  46     if (child != widget)
  47     {
  48         while (child)
  49         {
  50             if (child == widget)
  51                 return FALSE;
  52             child = child->parent;
  53         }
  54     }
  55
  56     wxFocusEvent event( wxEVT_KILL_FOCUS, win->GetId() );
  57     event.SetEventObject( win );
  58
  59     (void)win->GetEventHandler()->ProcessEvent( event );
  60
  61     return TRUE;
  62 }
  63 }
  64
  65 //-----------------------------------------------------------------------------
  66 // "delete_event"
  67 //-----------------------------------------------------------------------------
  68
  69 extern "C" {
  70 bool gtk_dialog_delete_callback( GtkWidget *WXUNUSED(widget), GdkEvent *WXUNUSED(event), wxPopupWindow *win )
  71 {
  72     if (win->IsEnabled())
  73         win->Close();
  74
  75     return TRUE;
  76 }
  77 }
  78
  79 //-----------------------------------------------------------------------------
  80 // "realize" from m_widget
  81 //-----------------------------------------------------------------------------
  82
  83 /* we cannot MWM hints and icons before the widget has been realized,
  84    so we do this directly after realization */
  85
  86 extern "C" {
  87 static gint
  88 gtk_dialog_realized_callback( GtkWidget * WXUNUSED(widget), wxPopupWindow *win )
  89 {
  90     /* all this is for Motif Window Manager "hints" and is supposed to be
  91        recognized by other WM as well. not tested. */
  92     long decor = (long) GDK_DECOR_BORDER;
  93     long func = (long) GDK_FUNC_MOVE ;
  94
  95     gdk_window_set_decorations( win->m_widget->window, (GdkWMDecoration)decor);
  96     gdk_window_set_functions( win->m_widget->window, (GdkWMFunction)func);
  97
  98     gtk_window_set_resizable(GTK_WINDOW(win->m_widget), FALSE);
  99
 100     return FALSE;
 101 }
 102 }
 103
 104 //-----------------------------------------------------------------------------
 105 // InsertChild for wxPopupWindow
 106 //-----------------------------------------------------------------------------
 107
 108 /* Callback for wxFrame. This very strange beast has to be used because
 109  * C++ has no virtual methods in a constructor. We have to emulate a
 110  * virtual function here as wxWidgets requires different ways to insert
 111  * a child in container classes. */
 112
 113 static void wxInsertChildInDialog( wxPopupWindow* parent, wxWindow* child )
 114 {
 115     gtk_pizza_put( GTK_PIZZA(parent->m_wxwindow),
 116                    child->m_widget,
 117                    child->m_x,
 118                    child->m_y,
 119                    child->m_width,
 120                    child->m_height );
 121
 122     if (parent->HasFlag(wxTAB_TRAVERSAL))
 123     {
 124         /* we now allow a window to get the focus as long as it
 125            doesn't have any children. */
 126         GTK_WIDGET_UNSET_FLAGS( parent->m_wxwindow, GTK_CAN_FOCUS );
 127     }
 128 }
 129
 130 //-----------------------------------------------------------------------------
 131 // wxPopupWindow
 132 //-----------------------------------------------------------------------------
 133
 134 BEGIN_EVENT_TABLE(wxPopupWindow,wxPopupWindowBase)
 135 #ifdef __WXUNIVERSAL__
 136     EVT_SIZE(wxPopupWindow::OnSize)
 137 #endif
 138 END_EVENT_TABLE()
 139
 140 wxPopupWindow::~wxPopupWindow()
 141 {
 142 }
 143
 144 bool wxPopupWindow::Create( wxWindow *parent, int style )
 145 {
 146     if (!PreCreation( parent, wxDefaultPosition, wxDefaultSize ) ||
 147         !CreateBase( parent, -1, wxDefaultPosition, wxDefaultSize, style, wxDefaultValidator, wxT("popup") ))
 148     {
 149         wxFAIL_MSG( wxT("wxPopupWindow creation failed") );
 150         return false;
 151     }
 152
 153     // Unlike windows, top level windows are created hidden by default.
 154     m_isShown = false;
 155
 156     // All dialogs should really have this style
 157     m_windowStyle |= wxTAB_TRAVERSAL;
 158
 159     m_insertCallback = (wxInsertChildFunction) wxInsertChildInDialog;
 160
 161     m_widget = gtk_window_new( GTK_WINDOW_POPUP );
 162
 163     if ((m_parent) && (GTK_IS_WINDOW(m_parent->m_widget)))
 164         gtk_window_set_transient_for( GTK_WINDOW(m_widget), GTK_WINDOW(m_parent->m_widget) );
 165
 166     GTK_WIDGET_UNSET_FLAGS( m_widget, GTK_CAN_FOCUS );
 167
 168     g_signal_connect (m_widget, "delete_event",
 169                       G_CALLBACK (gtk_dialog_delete_callback), this);
 170
 171     m_wxwindow = gtk_pizza_new();
 172     gtk_widget_show( m_wxwindow );
 173     GTK_WIDGET_UNSET_FLAGS( m_wxwindow, GTK_CAN_FOCUS );
 174
 175     gtk_container_add( GTK_CONTAINER(m_widget), m_wxwindow );
 176
 177     if (m_parent) m_parent->AddChild( this );
 178
 179     PostCreation();
 180
 181     /*  we cannot set MWM hints  before the widget has
 182         been realized, so we do this directly after realization */
 183     g_signal_connect (m_widget, "realize",
 184                       G_CALLBACK (gtk_dialog_realized_callback), this);
 185
 186     m_time = gtk_get_current_event_time();
 187
 188     g_signal_connect (m_widget, "button_press_event",
 189                       G_CALLBACK (gtk_popup_button_press), this);
 190
 191     return true;
 192 }
 193
 194 void wxPopupWindow::DoMoveWindow(int WXUNUSED(x), int WXUNUSED(y), int WXUNUSED(width), int WXUNUSED(height) )
 195 {
 196     wxFAIL_MSG( wxT("DoMoveWindow called for wxPopupWindow") );
 197 }
 198
 199 void wxPopupWindow::DoSetSize( int x, int y, int width, int height, int sizeFlags )
 200 {
 201     wxASSERT_MSG( (m_widget != NULL), wxT("invalid dialog") );
 202     wxASSERT_MSG( (m_wxwindow != NULL), wxT("invalid dialog") );
 203
 204     if (m_resizing) return; /* I don't like recursions */
 205     m_resizing = true;
 206
 207     int old_x = m_x;
 208     int old_y = m_y;
 209
 210     int old_width = m_width;
 211     int old_height = m_height;
 212
 213     if ((sizeFlags & wxSIZE_ALLOW_MINUS_ONE) == 0)
 214     {
 215         if (x != -1) m_x = x;
 216         if (y != -1) m_y = y;
 217         if (width != -1) m_width = width;
 218         if (height != -1) m_height = height;
 219     }
 220     else
 221     {
 222         m_x = x;
 223         m_y = y;
 224         m_width = width;
 225         m_height = height;
 226     }
 227
 228 /*
 229     if ((sizeFlags & wxSIZE_AUTO_WIDTH) == wxSIZE_AUTO_WIDTH)
 230     {
 231         if (width == -1) m_width = 80;
 232     }
 233
 234     if ((sizeFlags & wxSIZE_AUTO_HEIGHT) == wxSIZE_AUTO_HEIGHT)
 235     {
 236        if (height == -1) m_height = 26;
 237     }
 238 */
 239
 240     ConstrainSize();
 241
 242     if ((m_x != -1) || (m_y != -1))
 243     {
 244         if ((m_x != old_x) || (m_y != old_y))
 245         {
 246             /* we set the position here and when showing the dialog
 247                for the first time in idle time */
 248             // Where does that happen in idle time? I do not see it anywhere - MR
 249             gtk_window_move( GTK_WINDOW(m_widget), m_x, m_y );
 250         }
 251     }
 252
 253     if ((m_width != old_width) || (m_height != old_height))
 254     {
 255         gtk_widget_set_size_request( m_widget, m_width, m_height );
 256
 257         /* actual resizing is deferred to GtkOnSize in idle time and
 258            when showing the dialog */
 259         m_sizeSet = false;
 260
 261     }
 262
 263     m_resizing = false;
 264 }
 265
 266 void wxPopupWindow::GtkOnSize()
 267 {
 268     if (m_sizeSet) return;
 269     if (!m_wxwindow) return;
 270
 271     /* FIXME: is this a hack? */
 272     /* Since for some reason GTK will revert to using maximum size ever set
 273        for this window, we have to set geometry hints maxsize to match size
 274        given. Also set the to that minsize since resizing isn't possible
 275        anyway. */
 276
 277     /* set size hints */
 278     gint flag = GDK_HINT_MAX_SIZE | GDK_HINT_MIN_SIZE; // GDK_HINT_POS;
 279     GdkGeometry geom;
 280     geom.min_width = m_width;
 281     geom.min_height = m_height;
 282     geom.max_width = m_width;
 283     geom.max_height = m_height;
 284     gtk_window_set_geometry_hints( GTK_WINDOW(m_widget),
 285                                    (GtkWidget*) NULL,
 286                                    &geom,
 287                                    (GdkWindowHints) flag );
 288
 289
 290     m_sizeSet = true;
 291
 292     wxSizeEvent event( wxSize(m_width,m_height), GetId() );
 293     event.SetEventObject( this );
 294     GetEventHandler()->ProcessEvent( event );
 295 }
 296
 297 void wxPopupWindow::OnInternalIdle()
 298 {
 299     if (!m_sizeSet && GTK_WIDGET_REALIZED(m_wxwindow))
 300         GtkOnSize();
 301
 302     wxWindow::OnInternalIdle();
 303 }
 304
 305 bool wxPopupWindow::Show( bool show )
 306 {
 307     if (show && !m_sizeSet)
 308     {
 309         /* by calling GtkOnSize here, we don't have to call
 310            either after showing the frame, which would entail
 311            much ugly flicker nor from within the size_allocate
 312            handler, because GTK 1.1.X forbids that. */
 313
 314         GtkOnSize();
 315     }
 316
 317     bool ret = wxWindow::Show( show );
 318
 319     return ret;
 320 }
 321
 322 #endif // wxUSE_POPUPWIN