src/gtk1/choice.cpp

   1 /////////////////////////////////////////////////////////////////////////////
   2 // Name:        choice.cpp
   3 // Purpose:
   4 // Author:      Robert Roebling
   5 // Id:          $id$
   6 // Copyright:   (c) 1998 Robert Roebling
   7 // Licence:     wxWindows licence
   8 /////////////////////////////////////////////////////////////////////////////
   9
  10
  11 #ifdef __GNUG__
  12 #pragma implementation "choice.h"
  13 #endif
  14
  15 #include "wx/choice.h"
  16
  17 //-----------------------------------------------------------------------------
  18 // data
  19 //-----------------------------------------------------------------------------
  20
  21 extern bool   g_blockEventsOnDrag;
  22
  23 //-----------------------------------------------------------------------------
  24 // "activate"
  25 //-----------------------------------------------------------------------------
  26
  27 static void gtk_choice_clicked_callback( GtkWidget *WXUNUSED(widget), wxChoice *choice )
  28 {
  29   if (!choice->HasVMT()) return;
  30   if (g_blockEventsOnDrag) return;
  31
  32   wxCommandEvent event(wxEVT_COMMAND_CHOICE_SELECTED, choice->GetId() );
  33   event.SetInt( choice->GetSelection() );
  34   wxString tmp( choice->GetStringSelection() );
  35   event.SetString( WXSTRINGCAST(tmp) );
  36   event.SetEventObject(choice);
  37   choice->GetEventHandler()->ProcessEvent(event);
  38 }
  39
  40 //-----------------------------------------------------------------------------
  41 // wxChoice
  42 //-----------------------------------------------------------------------------
  43
  44 IMPLEMENT_DYNAMIC_CLASS(wxChoice,wxControl)
  45
  46 wxChoice::wxChoice(void)
  47 {
  48 }
  49
  50 bool wxChoice::Create( wxWindow *parent, wxWindowID id,
  51       const wxPoint &pos, const wxSize &size,
  52       int n, const wxString choices[],
  53       long style, const wxValidator& validator, const wxString &name )
  54 {
  55   m_needParent = TRUE;
  56
  57   PreCreation( parent, id, pos, size, style, name );
  58
  59   SetValidator( validator );
  60
  61   m_widget = gtk_option_menu_new();
  62
  63   wxSize newSize = size;
  64   if (newSize.x == -1) newSize.x = 80;
  65   if (newSize.y == -1) newSize.y = 26;
  66   SetSize( newSize.x, newSize.y );
  67
  68   GtkWidget *menu = gtk_menu_new();
  69
  70   for (int i = 0; i < n; i++)
  71   {
  72     GtkWidget *item = gtk_menu_item_new_with_label( choices[i] );
  73     gtk_signal_connect( GTK_OBJECT( item ), "activate",
  74       GTK_SIGNAL_FUNC(gtk_choice_clicked_callback), (gpointer*)this );
  75
  76     gtk_menu_append( GTK_MENU(menu), item );
  77
  78     gtk_widget_show( item );
  79     gtk_widget_realize( item );
  80     gtk_widget_realize( GTK_BIN(item)->child );
  81   }
  82   gtk_option_menu_set_menu( GTK_OPTION_MENU(m_widget), menu );
  83
  84   PostCreation();
  85
  86   SetBackgroundColour( parent->GetBackgroundColour() );
  87
  88   Show( TRUE );
  89
  90   return TRUE;
  91 }
  92
  93 void wxChoice::Append( const wxString &item )
  94 {
  95   wxCHECK_RET( m_widget != NULL, "invalid choice" );
  96
  97   GtkWidget *menu = gtk_option_menu_get_menu( GTK_OPTION_MENU(m_widget) );
  98   GtkWidget *menu_item = gtk_menu_item_new_with_label( item );
  99
 100   gtk_menu_append( GTK_MENU(menu), menu_item );
 101
 102   gtk_widget_realize( menu_item );
 103   gtk_widget_realize( GTK_BIN(menu_item)->child );
 104
 105   if (m_hasOwnStyle)
 106   {
 107
 108     GtkBin *bin = GTK_BIN( menu_item );
 109
 110     gtk_widget_set_style( bin->child,
 111       gtk_style_ref(
 112         gtk_widget_get_style( m_widget ) ) );
 113
 114     gtk_widget_set_style( GTK_WIDGET( bin ),
 115       gtk_style_ref(
 116         gtk_widget_get_style( m_widget ) ) );
 117   }
 118
 119   gtk_signal_connect( GTK_OBJECT( menu_item ), "activate",
 120     GTK_SIGNAL_FUNC(gtk_choice_clicked_callback), (gpointer*)this );
 121
 122   gtk_widget_show( menu_item );
 123 }
 124
 125 void wxChoice::Clear(void)
 126 {
 127   wxCHECK_RET( m_widget != NULL, "invalid choice" );
 128
 129   gtk_option_menu_remove_menu( GTK_OPTION_MENU(m_widget) );
 130   GtkWidget *menu = gtk_menu_new();
 131   gtk_option_menu_set_menu( GTK_OPTION_MENU(m_widget), menu );
 132 }
 133
 134 void wxChoice::Delete( int WXUNUSED(n) )
 135 {
 136   wxFAIL_MSG( "wxChoice:Delete not implemented" );
 137 }
 138
 139 int wxChoice::FindString( const wxString &string ) const
 140 {
 141   wxCHECK_MSG( m_widget != NULL, -1, "invalid choice" );
 142
 143   // If you read this code once and you think you understand
 144   // it, then you are very wrong. Robert Roebling.
 145
 146   GtkMenuShell *menu_shell = GTK_MENU_SHELL( gtk_option_menu_get_menu( GTK_OPTION_MENU(m_widget) ) );
 147   int count = 0;
 148   GList *child = menu_shell->children;
 149   while (child)
 150   {
 151     GtkBin *bin = GTK_BIN( child->data );
 152     GtkLabel *label = (GtkLabel *) NULL;
 153     if (bin->child) label = GTK_LABEL(bin->child);
 154     if (!label) label = GTK_LABEL( GTK_BUTTON(m_widget)->child );
 155
 156     wxASSERT_MSG( label != NULL , "wxChoice: invalid label" );
 157
 158     if (string == label->label) return count;
 159     child = child->next;
 160     count++;
 161   }
 162
 163   wxFAIL_MSG( "wxChoice: string not found" );
 164
 165   return -1;
 166 }
 167
 168 int wxChoice::GetColumns(void) const
 169 {
 170   return 1;
 171 }
 172
 173 int wxChoice::GetSelection(void)
 174 {
 175   wxCHECK_MSG( m_widget != NULL, -1, "invalid choice" );
 176
 177   GtkMenuShell *menu_shell = GTK_MENU_SHELL( gtk_option_menu_get_menu( GTK_OPTION_MENU(m_widget) ) );
 178   int count = 0;
 179   GList *child = menu_shell->children;
 180   while (child)
 181   {
 182     GtkBin *bin = GTK_BIN( child->data );
 183     if (!bin->child) return count;
 184     child = child->next;
 185     count++;
 186   }
 187
 188   wxFAIL_MSG( "wxChoice: no selection" );
 189
 190   return -1;
 191 }
 192
 193 wxString wxChoice::GetString( int n ) const
 194 {
 195   wxCHECK_MSG( m_widget != NULL, "", "invalid choice" );
 196
 197   GtkMenuShell *menu_shell = GTK_MENU_SHELL( gtk_option_menu_get_menu( GTK_OPTION_MENU(m_widget) ) );
 198   int count = 0;
 199   GList *child = menu_shell->children;
 200   while (child)
 201   {
 202     GtkBin *bin = GTK_BIN( child->data );
 203     if (count == n)
 204     {
 205       GtkLabel *label = (GtkLabel *) NULL;
 206       if (bin->child) label = GTK_LABEL(bin->child);
 207       if (!label) label = GTK_LABEL( GTK_BUTTON(m_widget)->child );
 208
 209       wxASSERT_MSG( label != NULL , "wxChoice: invalid label" );
 210
 211       return label->label;
 212     }
 213     child = child->next;
 214     count++;
 215   }
 216
 217   wxFAIL_MSG( "wxChoice: string not found" );
 218
 219   return "";
 220 }
 221
 222 wxString wxChoice::GetStringSelection(void) const
 223 {
 224   wxCHECK_MSG( m_widget != NULL, "", "invalid choice" );
 225
 226   GtkLabel *label = GTK_LABEL( GTK_BUTTON(m_widget)->child );
 227
 228   wxASSERT_MSG( label != NULL , "wxChoice: invalid label" );
 229
 230   return label->label;
 231 }
 232
 233 int wxChoice::Number(void) const
 234 {
 235   wxCHECK_MSG( m_widget != NULL, 0, "invalid choice" );
 236
 237   GtkMenuShell *menu_shell = GTK_MENU_SHELL( gtk_option_menu_get_menu( GTK_OPTION_MENU(m_widget) ) );
 238   int count = 0;
 239   GList *child = menu_shell->children;
 240   while (child)
 241   {
 242     count++;
 243     child = child->next;
 244   }
 245   return count;
 246 }
 247
 248 void wxChoice::SetColumns( int WXUNUSED(n) )
 249 {
 250 }
 251
 252 void wxChoice::SetSelection( int n )
 253 {
 254   wxCHECK_RET( m_widget != NULL, "invalid choice" );
 255
 256   int tmp = n;
 257   gtk_option_menu_set_history( GTK_OPTION_MENU(m_widget), (gint)tmp );
 258
 259   gtk_choice_clicked_callback( (GtkWidget *) NULL, this );
 260 }
 261
 262 void wxChoice::SetStringSelection( const wxString &string )
 263 {
 264   wxCHECK_RET( m_widget != NULL, "invalid choice" );
 265
 266   int n = FindString( string );
 267   if (n != -1) SetSelection( n );
 268 }
 269
 270 void wxChoice::SetFont( const wxFont &font )
 271 {
 272   wxCHECK_RET( m_widget != NULL, "invalid choice" );
 273
 274   wxControl::SetFont( font );
 275
 276   GtkMenuShell *menu_shell = GTK_MENU_SHELL( gtk_option_menu_get_menu( GTK_OPTION_MENU(m_widget) ) );
 277   GList *child = menu_shell->children;
 278   while (child)
 279   {
 280     GtkBin *bin = GTK_BIN( child->data );
 281     GtkWidget *label = (GtkWidget *) NULL;
 282     if (bin->child) label = bin->child;
 283     if (!label) label = GTK_BUTTON(m_widget)->child;
 284
 285     gtk_widget_set_style( label,
 286       gtk_style_ref(
 287         gtk_widget_get_style( m_widget ) ) );
 288
 289     child = child->next;
 290   }
 291 }
 292
 293 void wxChoice::SetBackgroundColour( const wxColour &colour )
 294 {
 295   return;
 296
 297   wxCHECK_RET( m_widget != NULL, "invalid choice" );
 298
 299   wxControl::SetBackgroundColour( colour );
 300
 301   if (!m_backgroundColour.Ok()) return;
 302
 303   GtkStyle *style = gtk_widget_get_style( m_widget );
 304
 305   GtkMenuShell *menu_shell = GTK_MENU_SHELL( gtk_option_menu_get_menu( GTK_OPTION_MENU(m_widget) ) );
 306
 307   gtk_widget_set_style( GTK_WIDGET( menu_shell ), gtk_style_ref( style ) );
 308
 309   GList *child = menu_shell->children;
 310   while (child)
 311   {
 312     gtk_widget_set_style( GTK_WIDGET( child->data ), gtk_style_ref( style ) );
 313     child = child->next;
 314   }
 315 }
 316
 317
 318