src/gtk/popupwin.cpp

   1 /////////////////////////////////////////////////////////////////////////////
   2 // Name:        popupwin.cpp
   3 // Purpose:
   4 // Author:      Robert Roebling
   5 // Id:          $Id$
   6 // Copyright:   (c) 1998 Robert Roebling
   7 // Licence:     wxWindows licence
   8 /////////////////////////////////////////////////////////////////////////////
   9
  10 #ifdef __GNUG__
  11 #pragma implementation "popupwin.h"
  12 #endif
  13
  14 #include "wx/defs.h"
  15
  16 #if wxUSE_POPUPWIN
  17
  18 #include "wx/popupwin.h"
  19 #include "wx/frame.h"
  20 #include "wx/app.h"
  21 #include "wx/cursor.h"
  22
  23 #include <gdk/gdk.h>
  24 #include <gtk/gtk.h>
  25 #include <gdk/gdkkeysyms.h>
  26
  27 #include "wx/gtk/win_gtk.h"
  28
  29 //-----------------------------------------------------------------------------
  30 // idle system
  31 //-----------------------------------------------------------------------------
  32
  33 extern void wxapp_install_idle_handler();
  34 extern bool g_isIdle;
  35
  36 //-----------------------------------------------------------------------------
  37 // "focus" from m_window
  38 //-----------------------------------------------------------------------------
  39
  40 static gint gtk_dialog_focus_callback( GtkWidget *widget, GtkDirectionType WXUNUSED(d), wxWindow *WXUNUSED(win) )
  41 {
  42     if (g_isIdle)
  43         wxapp_install_idle_handler();
  44
  45     // This disables GTK's tab traversal
  46     gtk_signal_emit_stop_by_name( GTK_OBJECT(widget), "focus" );
  47     return TRUE;
  48 }
  49
  50 //-----------------------------------------------------------------------------
  51 // "delete_event"
  52 //-----------------------------------------------------------------------------
  53
  54 bool gtk_dialog_delete_callback( GtkWidget *WXUNUSED(widget), GdkEvent *WXUNUSED(event), wxPopupWindow *win )
  55 {
  56     if (g_isIdle)
  57         wxapp_install_idle_handler();
  58
  59     if (win->IsEnabled())
  60         win->Close();
  61
  62     return TRUE;
  63 }
  64
  65 //-----------------------------------------------------------------------------
  66 // "size_allocate"
  67 //-----------------------------------------------------------------------------
  68
  69 static void gtk_dialog_size_callback( GtkWidget *WXUNUSED(widget), GtkAllocation* alloc, wxPopupWindow *win )
  70 {
  71     if (g_isIdle)
  72         wxapp_install_idle_handler();
  73
  74     if (!win->m_hasVMT) return;
  75
  76     if ((win->m_width != alloc->width) || (win->m_height != alloc->height))
  77     {
  78         win->m_width = alloc->width;
  79         win->m_height = alloc->height;
  80         win->GtkUpdateSize();
  81     }
  82 }
  83
  84 //-----------------------------------------------------------------------------
  85 // "realize" from m_widget
  86 //-----------------------------------------------------------------------------
  87
  88 /* we cannot MWM hints and icons before the widget has been realized,
  89    so we do this directly after realization */
  90
  91 static gint
  92 gtk_dialog_realized_callback( GtkWidget * WXUNUSED(widget), wxPopupWindow *win )
  93 {
  94     if (g_isIdle)
  95         wxapp_install_idle_handler();
  96
  97     /* all this is for Motif Window Manager "hints" and is supposed to be
  98        recognized by other WM as well. not tested. */
  99     long decor = (long) GDK_DECOR_BORDER;
 100     long func = (long) GDK_FUNC_MOVE ;
 101
 102     gdk_window_set_decorations( win->m_widget->window, (GdkWMDecoration)decor);
 103     gdk_window_set_functions( win->m_widget->window, (GdkWMFunction)func);
 104
 105     /* GTK's shrinking/growing policy */
 106     if ((win->GetWindowStyle() & wxRESIZE_BORDER) == 0)
 107         gtk_window_set_policy(GTK_WINDOW(win->m_widget), 0, 0, 1);
 108     else
 109         gtk_window_set_policy(GTK_WINDOW(win->m_widget), 1, 1, 1);
 110
 111     return FALSE;
 112 }
 113
 114 //-----------------------------------------------------------------------------
 115 // InsertChild for wxPopupWindow
 116 //-----------------------------------------------------------------------------
 117
 118 /* Callback for wxFrame. This very strange beast has to be used because
 119  * C++ has no virtual methods in a constructor. We have to emulate a
 120  * virtual function here as wxWindows requires different ways to insert
 121  * a child in container classes. */
 122
 123 static void wxInsertChildInDialog( wxPopupWindow* parent, wxWindow* child )
 124 {
 125     gtk_pizza_put( GTK_PIZZA(parent->m_wxwindow),
 126                      GTK_WIDGET(child->m_widget),
 127                      child->m_x,
 128                      child->m_y,
 129                      child->m_width,
 130                      child->m_height );
 131
 132     if (parent->HasFlag(wxTAB_TRAVERSAL))
 133     {
 134         /* we now allow a window to get the focus as long as it
 135            doesn't have any children. */
 136         GTK_WIDGET_UNSET_FLAGS( parent->m_wxwindow, GTK_CAN_FOCUS );
 137     }
 138 }
 139
 140 //-----------------------------------------------------------------------------
 141 // wxPopupWindow
 142 //-----------------------------------------------------------------------------
 143
 144 BEGIN_EVENT_TABLE(wxPopupWindow,wxPopupWindowBase)
 145 #ifdef __WXUNIVERSAL__
 146     EVT_SIZE(wxPopupWindow::OnSize)
 147 #endif
 148 END_EVENT_TABLE()
 149
 150 IMPLEMENT_DYNAMIC_CLASS(wxPopupWindow, wxWindow)
 151
 152 wxPopupWindow::~wxPopupWindow()
 153 {
 154 }
 155
 156 bool wxPopupWindow::Create( wxWindow *parent, int style )
 157 {
 158     m_needParent = FALSE;
 159
 160     if (!PreCreation( parent, wxDefaultPosition, wxDefaultSize ) ||
 161         !CreateBase( parent, -1, wxDefaultPosition, wxDefaultSize, style, wxDefaultValidator, wxT("popup") ))
 162     {
 163         wxFAIL_MSG( wxT("wxPopupWindow creation failed") );
 164         return FALSE;
 165     }
 166
 167     // All dialogs should really have this style
 168     m_windowStyle |= wxTAB_TRAVERSAL;
 169
 170     m_insertCallback = (wxInsertChildFunction) wxInsertChildInDialog;
 171
 172     m_widget = gtk_window_new( GTK_WINDOW_POPUP );
 173
 174     if ((m_parent) && (GTK_IS_WINDOW(m_parent->m_widget)))
 175         gtk_window_set_transient_for( GTK_WINDOW(m_widget), GTK_WINDOW(m_parent->m_widget) );
 176
 177     GTK_WIDGET_UNSET_FLAGS( m_widget, GTK_CAN_FOCUS );
 178
 179     gtk_signal_connect( GTK_OBJECT(m_widget), "delete_event",
 180         GTK_SIGNAL_FUNC(gtk_dialog_delete_callback), (gpointer)this );
 181
 182     m_wxwindow = gtk_pizza_new();
 183     gtk_widget_show( m_wxwindow );
 184     GTK_WIDGET_UNSET_FLAGS( m_wxwindow, GTK_CAN_FOCUS );
 185
 186     gtk_container_add( GTK_CONTAINER(m_widget), m_wxwindow );
 187
 188     if (m_parent) m_parent->AddChild( this );
 189
 190     PostCreation();
 191
 192     /*  we cannot set MWM hints  before the widget has
 193         been realized, so we do this directly after realization */
 194     gtk_signal_connect( GTK_OBJECT(m_widget), "realize",
 195                         GTK_SIGNAL_FUNC(gtk_dialog_realized_callback), (gpointer) this );
 196
 197     /* the user resized the frame by dragging etc. */
 198     gtk_signal_connect( GTK_OBJECT(m_widget), "size_allocate",
 199         GTK_SIGNAL_FUNC(gtk_dialog_size_callback), (gpointer)this );
 200
 201     /* disable native tab traversal */
 202     gtk_signal_connect( GTK_OBJECT(m_widget), "focus",
 203         GTK_SIGNAL_FUNC(gtk_dialog_focus_callback), (gpointer)this );
 204
 205     return TRUE;
 206 }
 207
 208 void wxPopupWindow::DoMoveWindow(int WXUNUSED(x), int WXUNUSED(y), int WXUNUSED(width), int WXUNUSED(height) )
 209 {
 210     wxFAIL_MSG( wxT("DoMoveWindow called for wxPopupWindow") );
 211 }
 212
 213 void wxPopupWindow::DoSetSize( int x, int y, int width, int height, int sizeFlags )
 214 {
 215     wxASSERT_MSG( (m_widget != NULL), wxT("invalid dialog") );
 216     wxASSERT_MSG( (m_wxwindow != NULL), wxT("invalid dialog") );
 217
 218     if (m_resizing) return; /* I don't like recursions */
 219     m_resizing = TRUE;
 220
 221     int old_x = m_x;
 222     int old_y = m_y;
 223
 224     int old_width = m_width;
 225     int old_height = m_height;
 226
 227     if ((sizeFlags & wxSIZE_ALLOW_MINUS_ONE) == 0)
 228     {
 229         if (x != -1) m_x = x;
 230         if (y != -1) m_y = y;
 231         if (width != -1) m_width = width;
 232         if (height != -1) m_height = height;
 233     }
 234     else
 235     {
 236         m_x = x;
 237         m_y = y;
 238         m_width = width;
 239         m_height = height;
 240     }
 241
 242 /*
 243     if ((sizeFlags & wxSIZE_AUTO_WIDTH) == wxSIZE_AUTO_WIDTH)
 244     {
 245         if (width == -1) m_width = 80;
 246     }
 247
 248     if ((sizeFlags & wxSIZE_AUTO_HEIGHT) == wxSIZE_AUTO_HEIGHT)
 249     {
 250        if (height == -1) m_height = 26;
 251     }
 252 */
 253
 254     int minWidth = GetMinWidth(),
 255         minHeight = GetMinHeight(),
 256         maxWidth = GetMaxWidth(),
 257         maxHeight = GetMaxHeight();
 258
 259     if ((minWidth != -1) && (m_width < minWidth)) m_width = minWidth;
 260     if ((minHeight != -1) && (m_height < minHeight)) m_height = minHeight;
 261     if ((maxWidth != -1) && (m_width > maxWidth)) m_width = maxWidth;
 262     if ((maxHeight != -1) && (m_height > maxHeight)) m_height = maxHeight;
 263
 264     if ((m_x != -1) || (m_y != -1))
 265     {
 266         if ((m_x != old_x) || (m_y != old_y))
 267         {
 268             /* we set the position here and when showing the dialog
 269                for the first time in idle time */
 270             gtk_widget_set_uposition( m_widget, m_x, m_y );
 271         }
 272     }
 273
 274     if ((m_width != old_width) || (m_height != old_height))
 275     {
 276         gtk_widget_set_usize( m_widget, m_width, m_height );
 277
 278         /* actual resizing is deferred to GtkOnSize in idle time and
 279            when showing the dialog */
 280         m_sizeSet = FALSE;
 281
 282     }
 283
 284     m_resizing = FALSE;
 285 }
 286
 287 void wxPopupWindow::GtkOnSize( int WXUNUSED(x), int WXUNUSED(y), int width, int height )
 288 {
 289     // due to a bug in gtk, x,y are always 0
 290     // m_x = x;
 291     // m_y = y;
 292
 293     if ((m_height == height) && (m_width == width) && (m_sizeSet)) return;
 294     if (!m_wxwindow) return;
 295
 296     m_width = width;
 297     m_height = height;
 298
 299     int minWidth = GetMinWidth(),
 300         minHeight = GetMinHeight(),
 301         maxWidth = GetMaxWidth(),
 302         maxHeight = GetMaxHeight();
 303
 304     if ((minWidth != -1) && (m_width < minWidth)) m_width = minWidth;
 305     if ((minHeight != -1) && (m_height < minHeight)) m_height = minHeight;
 306     if ((maxWidth != -1) && (m_width > maxWidth)) m_width = maxWidth;
 307     if ((maxHeight != -1) && (m_height > maxHeight)) m_height = maxHeight;
 308
 309     /* set size hints */
 310     gint flag = 0; // GDK_HINT_POS;
 311     if ((minWidth != -1) || (minHeight != -1)) flag |= GDK_HINT_MIN_SIZE;
 312     if ((maxWidth != -1) || (maxHeight != -1)) flag |= GDK_HINT_MAX_SIZE;
 313     GdkGeometry geom;
 314     geom.min_width = minWidth;
 315     geom.min_height = minHeight;
 316     geom.max_width = maxWidth;
 317     geom.max_height = maxHeight;
 318     gtk_window_set_geometry_hints( GTK_WINDOW(m_widget),
 319                                    (GtkWidget*) NULL,
 320                                    &geom,
 321                                    (GdkWindowHints) flag );
 322
 323     m_sizeSet = TRUE;
 324
 325     wxSizeEvent event( wxSize(m_width,m_height), GetId() );
 326     event.SetEventObject( this );
 327     GetEventHandler()->ProcessEvent( event );
 328 }
 329
 330 void wxPopupWindow::OnInternalIdle()
 331 {
 332     if (!m_sizeSet && GTK_WIDGET_REALIZED(m_wxwindow))
 333         GtkOnSize( m_x, m_y, m_width, m_height );
 334
 335     wxWindow::OnInternalIdle();
 336 }
 337
 338 bool wxPopupWindow::Show( bool show )
 339 {
 340     if (show && !m_sizeSet)
 341     {
 342         /* by calling GtkOnSize here, we don't have to call
 343            either after showing the frame, which would entail
 344            much ugly flicker nor from within the size_allocate
 345            handler, because GTK 1.1.X forbids that. */
 346
 347         GtkOnSize( m_x, m_y, m_width, m_height );
 348     }
 349
 350     bool ret = wxWindow::Show( show );
 351
 352     return ret;
 353 }
 354
 355 #endif // wxUSE_POPUPWIN