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