Pileus Git - ~andy/gtk/blob - gtk/gtkmenubar.c

   1 /* GTK - The GIMP Toolkit
   2  * Copyright (C) 1995-1997 Peter Mattis, Spencer Kimball and Josh MacDonald
   3  *
   4  * This library is free software; you can redistribute it and/or
   5  * modify it under the terms of the GNU Library General Public
   6  * License as published by the Free Software Foundation; either
   7  * version 2 of the License, or (at your option) any later version.
   8  *
   9  * This library is distributed in the hope that it will be useful,
  10  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  11  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  12  * Library General Public License for more details.
  13  *
  14  * You should have received a copy of the GNU Library General Public
  15  * License along with this library; if not, write to the
  16  * Free Software Foundation, Inc., 59 Temple Place - Suite 330,
  17  * Boston, MA 02111-1307, USA.
  18  */
  19 #include "gdk/gdkkeysyms.h"
  20 #include "gtkbindings.h"
  21 #include "gtkmain.h"
  22 #include "gtkmenubar.h"
  23 #include "gtkmenuitem.h"
  24
  25 enum {
  26   ARG_0,
  27   ARG_SHADOW
  28 };
  29
  30
  31 #define BORDER_SPACING  0
  32 #define CHILD_SPACING   3
  33
  34
  35 static void gtk_menu_bar_class_init    (GtkMenuBarClass *klass);
  36 static void gtk_menu_bar_init          (GtkMenuBar      *menu_bar);
  37 static void gtk_menu_bar_set_arg       (GtkObject      *object,
  38                                         GtkArg         *arg,
  39                                         guint           arg_id);
  40 static void gtk_menu_bar_get_arg       (GtkObject      *object,
  41                                         GtkArg         *arg,
  42                                         guint           arg_id);
  43 static void gtk_menu_bar_size_request  (GtkWidget       *widget,
  44                                         GtkRequisition  *requisition);
  45 static void gtk_menu_bar_size_allocate (GtkWidget       *widget,
  46                                         GtkAllocation   *allocation);
  47 static void gtk_menu_bar_paint         (GtkWidget       *widget,
  48                                         GdkRectangle    *area);
  49 static void gtk_menu_bar_draw          (GtkWidget       *widget,
  50                                         GdkRectangle    *area);
  51 static gint gtk_menu_bar_expose        (GtkWidget       *widget,
  52                                         GdkEventExpose  *event);
  53
  54
  55 GtkType
  56 gtk_menu_bar_get_type (void)
  57 {
  58   static GtkType menu_bar_type = 0;
  59
  60   if (!menu_bar_type)
  61     {
  62       static const GtkTypeInfo menu_bar_info =
  63       {
  64         "GtkMenuBar",
  65         sizeof (GtkMenuBar),
  66         sizeof (GtkMenuBarClass),
  67         (GtkClassInitFunc) gtk_menu_bar_class_init,
  68         (GtkObjectInitFunc) gtk_menu_bar_init,
  69         /* reserved_1 */ NULL,
  70         /* reserved_2 */ NULL,
  71         (GtkClassInitFunc) NULL,
  72       };
  73
  74       menu_bar_type = gtk_type_unique (gtk_menu_shell_get_type (), &menu_bar_info);
  75     }
  76
  77   return menu_bar_type;
  78 }
  79
  80 static void
  81 gtk_menu_bar_class_init (GtkMenuBarClass *class)
  82 {
  83   GtkObjectClass *object_class;
  84   GtkWidgetClass *widget_class;
  85   GtkMenuShellClass *menu_shell_class;
  86
  87   GtkBindingSet *binding_set;
  88
  89   object_class = (GtkObjectClass*) class;
  90   widget_class = (GtkWidgetClass*) class;
  91   menu_shell_class = (GtkMenuShellClass*) class;
  92
  93   gtk_object_add_arg_type ("GtkMenuBar::shadow", GTK_TYPE_SHADOW_TYPE, GTK_ARG_READWRITE, ARG_SHADOW);
  94
  95   object_class->set_arg = gtk_menu_bar_set_arg;
  96   object_class->get_arg = gtk_menu_bar_get_arg;
  97
  98   widget_class->draw = gtk_menu_bar_draw;
  99   widget_class->size_request = gtk_menu_bar_size_request;
 100   widget_class->size_allocate = gtk_menu_bar_size_allocate;
 101   widget_class->expose_event = gtk_menu_bar_expose;
 102
 103   menu_shell_class->submenu_placement = GTK_TOP_BOTTOM;
 104
 105   binding_set = gtk_binding_set_by_class (class);
 106   gtk_binding_entry_add_signal (binding_set,
 107                                 GDK_Left, 0,
 108                                 "move_current", 1,
 109                                 GTK_TYPE_MENU_DIRECTION_TYPE,
 110                                 GTK_MENU_DIR_PREV);
 111   gtk_binding_entry_add_signal (binding_set,
 112                                 GDK_Right, 0,
 113                                 "move_current", 1,
 114                                 GTK_TYPE_MENU_DIRECTION_TYPE,
 115                                 GTK_MENU_DIR_NEXT);
 116   gtk_binding_entry_add_signal (binding_set,
 117                                 GDK_Up, 0,
 118                                 "move_current", 1,
 119                                 GTK_TYPE_MENU_DIRECTION_TYPE,
 120                                 GTK_MENU_DIR_PARENT);
 121   gtk_binding_entry_add_signal (binding_set,
 122                                 GDK_Down, 0,
 123                                 "move_current", 1,
 124                                 GTK_TYPE_MENU_DIRECTION_TYPE,
 125                                 GTK_MENU_DIR_CHILD);
 126 }
 127
 128 static void
 129 gtk_menu_bar_init (GtkMenuBar *menu_bar)
 130 {
 131   menu_bar->shadow_type = GTK_SHADOW_OUT;
 132 }
 133
 134 static void
 135 gtk_menu_bar_set_arg (GtkObject      *object,
 136                       GtkArg         *arg,
 137                       guint           arg_id)
 138 {
 139   GtkMenuBar *menu_bar;
 140
 141   menu_bar = GTK_MENU_BAR (object);
 142
 143   switch (arg_id)
 144     {
 145     case ARG_SHADOW:
 146       gtk_menu_bar_set_shadow_type (menu_bar, GTK_VALUE_ENUM (*arg));
 147       break;
 148     default:
 149       break;
 150     }
 151 }
 152
 153 static void
 154 gtk_menu_bar_get_arg (GtkObject      *object,
 155                       GtkArg         *arg,
 156                       guint           arg_id)
 157 {
 158   GtkMenuBar *menu_bar;
 159
 160   menu_bar = GTK_MENU_BAR (object);
 161
 162   switch (arg_id)
 163     {
 164     case ARG_SHADOW:
 165       GTK_VALUE_ENUM (*arg) = menu_bar->shadow_type;
 166       break;
 167     default:
 168       arg->type = GTK_TYPE_INVALID;
 169       break;
 170     }
 171 }
 172
 173 GtkWidget*
 174 gtk_menu_bar_new (void)
 175 {
 176   return GTK_WIDGET (gtk_type_new (gtk_menu_bar_get_type ()));
 177 }
 178
 179 void
 180 gtk_menu_bar_append (GtkMenuBar *menu_bar,
 181                      GtkWidget  *child)
 182 {
 183   gtk_menu_shell_append (GTK_MENU_SHELL (menu_bar), child);
 184 }
 185
 186 void
 187 gtk_menu_bar_prepend (GtkMenuBar *menu_bar,
 188                       GtkWidget  *child)
 189 {
 190   gtk_menu_shell_prepend (GTK_MENU_SHELL (menu_bar), child);
 191 }
 192
 193 void
 194 gtk_menu_bar_insert (GtkMenuBar *menu_bar,
 195                      GtkWidget  *child,
 196                      gint        position)
 197 {
 198   gtk_menu_shell_insert (GTK_MENU_SHELL (menu_bar), child, position);
 199 }
 200
 201
 202 static void
 203 gtk_menu_bar_size_request (GtkWidget      *widget,
 204                            GtkRequisition *requisition)
 205 {
 206   GtkMenuBar *menu_bar;
 207   GtkMenuShell *menu_shell;
 208   GtkWidget *child;
 209   GList *children;
 210   gint nchildren;
 211
 212   g_return_if_fail (widget != NULL);
 213   g_return_if_fail (GTK_IS_MENU_BAR (widget));
 214   g_return_if_fail (requisition != NULL);
 215
 216   requisition->width = 0;
 217   requisition->height = 0;
 218
 219   if (GTK_WIDGET_VISIBLE (widget))
 220     {
 221       menu_bar = GTK_MENU_BAR (widget);
 222       menu_shell = GTK_MENU_SHELL (widget);
 223
 224       nchildren = 0;
 225       children = menu_shell->children;
 226
 227       while (children)
 228         {
 229           child = children->data;
 230           children = children->next;
 231
 232           if (GTK_WIDGET_VISIBLE (child))
 233             {
 234               GTK_MENU_ITEM (child)->show_submenu_indicator = FALSE;
 235               gtk_widget_size_request (child, &child->requisition);
 236
 237               requisition->width += child->requisition.width;
 238               requisition->height = MAX (requisition->height, child->requisition.height);
 239               /* Support for the right justified help menu */
 240               if ( (children == NULL) && (GTK_IS_MENU_ITEM(child))
 241                    && (GTK_MENU_ITEM(child)->right_justify))
 242                 {
 243                   requisition->width += CHILD_SPACING;
 244                 }
 245
 246               nchildren += 1;
 247             }
 248         }
 249
 250       requisition->width += (GTK_CONTAINER (menu_bar)->border_width +
 251                              widget->style->klass->xthickness +
 252                              BORDER_SPACING) * 2;
 253       requisition->height += (GTK_CONTAINER (menu_bar)->border_width +
 254                               widget->style->klass->ythickness +
 255                               BORDER_SPACING) * 2;
 256
 257       if (nchildren > 0)
 258         requisition->width += 2 * CHILD_SPACING * (nchildren - 1);
 259     }
 260 }
 261
 262 static void
 263 gtk_menu_bar_size_allocate (GtkWidget     *widget,
 264                             GtkAllocation *allocation)
 265 {
 266   GtkMenuBar *menu_bar;
 267   GtkMenuShell *menu_shell;
 268   GtkWidget *child;
 269   GList *children;
 270   GtkAllocation child_allocation;
 271   guint offset;
 272
 273   g_return_if_fail (widget != NULL);
 274   g_return_if_fail (GTK_IS_MENU_BAR (widget));
 275   g_return_if_fail (allocation != NULL);
 276
 277   menu_bar = GTK_MENU_BAR (widget);
 278   menu_shell = GTK_MENU_SHELL (widget);
 279
 280   widget->allocation = *allocation;
 281   if (GTK_WIDGET_REALIZED (widget))
 282     gdk_window_move_resize (widget->window,
 283                             allocation->x, allocation->y,
 284                             allocation->width, allocation->height);
 285
 286   if (menu_shell->children)
 287     {
 288       child_allocation.x = (GTK_CONTAINER (menu_bar)->border_width +
 289                             widget->style->klass->xthickness +
 290                             BORDER_SPACING);
 291       offset = child_allocation.x;      /* Window edge to menubar start */
 292
 293       child_allocation.y = (GTK_CONTAINER (menu_bar)->border_width +
 294                             widget->style->klass->ythickness +
 295                             BORDER_SPACING);
 296       child_allocation.height = MAX (1, (gint)allocation->height - child_allocation.y * 2);
 297
 298       children = menu_shell->children;
 299       while (children)
 300         {
 301           child = children->data;
 302           children = children->next;
 303
 304           /* Support for the right justified help menu */
 305           if ( (children == NULL) && (GTK_IS_MENU_ITEM(child))
 306               && (GTK_MENU_ITEM(child)->right_justify))
 307             {
 308               child_allocation.x = allocation->width -
 309                   child->requisition.width - CHILD_SPACING - offset;
 310             }
 311           if (GTK_WIDGET_VISIBLE (child))
 312             {
 313               child_allocation.width = child->requisition.width;
 314
 315               gtk_widget_size_allocate (child, &child_allocation);
 316
 317               child_allocation.x += child_allocation.width + CHILD_SPACING * 2;
 318             }
 319         }
 320     }
 321 }
 322
 323 void
 324 gtk_menu_bar_set_shadow_type (GtkMenuBar    *menu_bar,
 325                               GtkShadowType  type)
 326 {
 327   g_return_if_fail (menu_bar != NULL);
 328   g_return_if_fail (GTK_IS_MENU_BAR (menu_bar));
 329
 330   if ((GtkShadowType) menu_bar->shadow_type != type)
 331     {
 332       menu_bar->shadow_type = type;
 333
 334       if (GTK_WIDGET_DRAWABLE (menu_bar))
 335         {
 336           gtk_widget_queue_clear (GTK_WIDGET (menu_bar));
 337         }
 338       gtk_widget_queue_resize (GTK_WIDGET (menu_bar));
 339     }
 340 }
 341
 342 static void
 343 gtk_menu_bar_paint (GtkWidget *widget, GdkRectangle *area)
 344 {
 345   g_return_if_fail (widget != NULL);
 346   g_return_if_fail (GTK_IS_MENU_BAR (widget));
 347
 348   if (GTK_WIDGET_DRAWABLE (widget))
 349     {
 350       gtk_paint_box (widget->style,
 351                      widget->window,
 352                      GTK_STATE_NORMAL,
 353                      GTK_MENU_BAR (widget)->shadow_type,
 354                      area, widget, "menubar",
 355                      0, 0,
 356                      -1,-1);
 357     }
 358 }
 359
 360 static void
 361 gtk_menu_bar_draw (GtkWidget    *widget,
 362                    GdkRectangle *area)
 363 {
 364   GtkMenuShell *menu_shell;
 365   GtkWidget *child;
 366   GdkRectangle child_area;
 367   GList *children;
 368
 369   g_return_if_fail (widget != NULL);
 370   g_return_if_fail (GTK_IS_MENU_BAR (widget));
 371   g_return_if_fail (area != NULL);
 372
 373   if (GTK_WIDGET_DRAWABLE (widget))
 374     {
 375       gtk_menu_bar_paint (widget, area);
 376
 377       menu_shell = GTK_MENU_SHELL (widget);
 378
 379       children = menu_shell->children;
 380       while (children)
 381         {
 382           child = children->data;
 383           children = children->next;
 384
 385           if (gtk_widget_intersect (child, area, &child_area))
 386             gtk_widget_draw (child, &child_area);
 387         }
 388     }
 389 }
 390
 391 static gint
 392 gtk_menu_bar_expose (GtkWidget      *widget,
 393                      GdkEventExpose *event)
 394 {
 395   GtkMenuShell *menu_shell;
 396   GdkEventExpose child_event;
 397   GList *children;
 398   GtkWidget *child;
 399
 400   g_return_val_if_fail (widget != NULL, FALSE);
 401   g_return_val_if_fail (GTK_IS_MENU_BAR (widget), FALSE);
 402   g_return_val_if_fail (event != NULL, FALSE);
 403
 404   if (GTK_WIDGET_DRAWABLE (widget))
 405     {
 406       gtk_menu_bar_paint (widget, &event->area);
 407
 408       menu_shell = GTK_MENU_SHELL (widget);
 409       child_event = *event;
 410
 411       children = menu_shell->children;
 412       while (children)
 413         {
 414           child = children->data;
 415           children = children->next;
 416
 417           if (GTK_WIDGET_NO_WINDOW (child) &&
 418               gtk_widget_intersect (child, &event->area, &child_event.area))
 419             gtk_widget_event (child, (GdkEvent*) &child_event);
 420         }
 421     }
 422
 423   return FALSE;
 424 }