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