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     EVT_SIZE    (wxPopupWindow::OnSize)
 146 END_EVENT_TABLE()
 147
 148 IMPLEMENT_DYNAMIC_CLASS(wxPopupWindow,wxPopupWindowBase)
 149
 150 bool wxPopupWindow::Create( wxWindow *parent, int style )
 151 {
 152     m_needParent = FALSE;
 153
 154     if (!PreCreation( parent, wxDefaultPosition, wxDefaultSize ) ||
 155         !CreateBase( parent, -1, wxDefaultPosition, wxDefaultSize, style, wxDefaultValidator, "popup" ))
 156     {
 157         wxFAIL_MSG( wxT("wxPopupWindow creation failed") );
 158         return FALSE;
 159     }
 160
 161     // All dialogs should really have this style
 162     m_windowStyle |= wxTAB_TRAVERSAL;
 163
 164     m_insertCallback = (wxInsertChildFunction) wxInsertChildInDialog;
 165
 166     m_widget = gtk_window_new( GTK_WINDOW_POPUP );
 167
 168     if ((m_parent) && (GTK_IS_WINDOW(m_parent->m_widget)))
 169         gtk_window_set_transient_for( GTK_WINDOW(m_widget), GTK_WINDOW(m_parent->m_widget) );
 170
 171     GTK_WIDGET_UNSET_FLAGS( m_widget, GTK_CAN_FOCUS );
 172
 173     gtk_signal_connect( GTK_OBJECT(m_widget), "delete_event",
 174         GTK_SIGNAL_FUNC(gtk_dialog_delete_callback), (gpointer)this );
 175
 176     m_wxwindow = gtk_pizza_new();
 177     gtk_widget_show( m_wxwindow );
 178     GTK_WIDGET_UNSET_FLAGS( m_wxwindow, GTK_CAN_FOCUS );
 179
 180     gtk_container_add( GTK_CONTAINER(m_widget), m_wxwindow );
 181
 182     if (m_parent) m_parent->AddChild( this );
 183
 184     PostCreation();
 185
 186     /*  we cannot set MWM hints  before the widget has
 187         been realized, so we do this directly after realization */
 188     gtk_signal_connect( GTK_OBJECT(m_widget), "realize",
 189                         GTK_SIGNAL_FUNC(gtk_dialog_realized_callback), (gpointer) this );
 190
 191     /* the user resized the frame by dragging etc. */
 192     gtk_signal_connect( GTK_OBJECT(m_widget), "size_allocate",
 193         GTK_SIGNAL_FUNC(gtk_dialog_size_callback), (gpointer)this );
 194
 195     /* disable native tab traversal */
 196     gtk_signal_connect( GTK_OBJECT(m_widget), "focus",
 197         GTK_SIGNAL_FUNC(gtk_dialog_focus_callback), (gpointer)this );
 198
 199     return TRUE;
 200 }
 201
 202 void wxPopupWindow::DoMoveWindow(int WXUNUSED(x), int WXUNUSED(y), int WXUNUSED(width), int WXUNUSED(height) )
 203 {
 204     wxFAIL_MSG( wxT("DoMoveWindow called for wxPopupWindow") );
 205 }
 206
 207 void wxPopupWindow::DoSetSize( int x, int y, int width, int height, int sizeFlags )
 208 {
 209     wxASSERT_MSG( (m_widget != NULL), wxT("invalid dialog") );
 210     wxASSERT_MSG( (m_wxwindow != NULL), wxT("invalid dialog") );
 211
 212     if (m_resizing) return; /* I don't like recursions */
 213     m_resizing = TRUE;
 214
 215     int old_x = m_x;
 216     int old_y = m_y;
 217
 218     int old_width = m_width;
 219     int old_height = m_height;
 220
 221     if ((sizeFlags & wxSIZE_ALLOW_MINUS_ONE) == 0)
 222     {
 223         if (x != -1) m_x = x;
 224         if (y != -1) m_y = y;
 225         if (width != -1) m_width = width;
 226         if (height != -1) m_height = height;
 227     }
 228     else
 229     {
 230         m_x = x;
 231         m_y = y;
 232         m_width = width;
 233         m_height = height;
 234     }
 235
 236 /*
 237     if ((sizeFlags & wxSIZE_AUTO_WIDTH) == wxSIZE_AUTO_WIDTH)
 238     {
 239         if (width == -1) m_width = 80;
 240     }
 241
 242     if ((sizeFlags & wxSIZE_AUTO_HEIGHT) == wxSIZE_AUTO_HEIGHT)
 243     {
 244        if (height == -1) m_height = 26;
 245     }
 246 */
 247
 248     if ((m_minWidth != -1) && (m_width < m_minWidth)) m_width = m_minWidth;
 249     if ((m_minHeight != -1) && (m_height < m_minHeight)) m_height = m_minHeight;
 250     if ((m_maxWidth != -1) && (m_width > m_maxWidth)) m_width = m_maxWidth;
 251     if ((m_maxHeight != -1) && (m_height > m_maxHeight)) m_height = m_maxHeight;
 252
 253     if ((m_x != -1) || (m_y != -1))
 254     {
 255         if ((m_x != old_x) || (m_y != old_y))
 256         {
 257             /* we set the position here and when showing the dialog
 258                for the first time in idle time */
 259             gtk_widget_set_uposition( m_widget, m_x, m_y );
 260         }
 261     }
 262
 263     if ((m_width != old_width) || (m_height != old_height))
 264     {
 265         gtk_widget_set_usize( m_widget, m_width, m_height );
 266
 267         /* actual resizing is deferred to GtkOnSize in idle time and
 268            when showing the dialog */
 269         m_sizeSet = FALSE;
 270
 271     }
 272
 273     m_resizing = FALSE;
 274 }
 275
 276 void wxPopupWindow::GtkOnSize( int WXUNUSED(x), int WXUNUSED(y), int width, int height )
 277 {
 278     // due to a bug in gtk, x,y are always 0
 279     // m_x = x;
 280     // m_y = y;
 281
 282     if ((m_height == height) && (m_width == width) && (m_sizeSet)) return;
 283     if (!m_wxwindow) return;
 284
 285     m_width = width;
 286     m_height = height;
 287
 288     if ((m_minWidth != -1) && (m_width < m_minWidth)) m_width = m_minWidth;
 289     if ((m_minHeight != -1) && (m_height < m_minHeight)) m_height = m_minHeight;
 290     if ((m_maxWidth != -1) && (m_width > m_maxWidth)) m_width = m_maxWidth;
 291     if ((m_maxHeight != -1) && (m_height > m_maxHeight)) m_height = m_maxHeight;
 292
 293     /* set size hints */
 294     gint flag = 0; // GDK_HINT_POS;
 295     if ((m_minWidth != -1) || (m_minHeight != -1)) flag |= GDK_HINT_MIN_SIZE;
 296     if ((m_maxWidth != -1) || (m_maxHeight != -1)) flag |= GDK_HINT_MAX_SIZE;
 297     GdkGeometry geom;
 298     geom.min_width = m_minWidth;
 299     geom.min_height = m_minHeight;
 300     geom.max_width = m_maxWidth;
 301     geom.max_height = m_maxHeight;
 302     gtk_window_set_geometry_hints( GTK_WINDOW(m_widget),
 303                                    (GtkWidget*) NULL,
 304                                    &geom,
 305                                    (GdkWindowHints) flag );
 306
 307     m_sizeSet = TRUE;
 308
 309     wxSizeEvent event( wxSize(m_width,m_height), GetId() );
 310     event.SetEventObject( this );
 311     GetEventHandler()->ProcessEvent( event );
 312 }
 313
 314 void wxPopupWindow::OnInternalIdle()
 315 {
 316     if (!m_sizeSet && GTK_WIDGET_REALIZED(m_wxwindow))
 317         GtkOnSize( m_x, m_y, m_width, m_height );
 318
 319     wxWindow::OnInternalIdle();
 320 }
 321
 322 bool wxPopupWindow::Show( bool show )
 323 {
 324     if (show && !m_sizeSet)
 325     {
 326         /* by calling GtkOnSize here, we don't have to call
 327            either after showing the frame, which would entail
 328            much ugly flicker nor from within the size_allocate
 329            handler, because GTK 1.1.X forbids that. */
 330
 331         GtkOnSize( m_x, m_y, m_width, m_height );
 332     }
 333
 334     bool ret = wxWindow::Show( show );
 335
 336     return ret;
 337 }
 338
 339 #endif // wxUSE_POPUPWIN