Initial revision

1 files changed, 633 insertions, 0 deletions

diff --git a/gtk/gtkmenushell.c b/gtk/gtkmenushell.c
new file mode 100644
index 000000000..6d3de5a7f
--- /dev/null
+++ b/gtk/gtkmenushell.c
@@ -0,0 +1,633 @@
+/* GTK - The GIMP Toolkit
+ * Copyright (C) 1995-1997 Peter Mattis, Spencer Kimball and Josh MacDonald
+ *
+ * This library is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Library General Public
+ * License as published by the Free Software Foundation; either
+ * version 2 of the License, or (at your option) any later version.
+ *
+ * This library is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+ * Library General Public License for more details.
+ *
+ * You should have received a copy of the GNU Library General Public
+ * License along with this library; if not, write to the Free
+ * Software Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
+ */
+#include "gtkmain.h"
+#include "gtkmenuitem.h"
+#include "gtkmenushell.h"
+#include "gtksignal.h"
+
+
+#define MENU_SHELL_TIMEOUT   500
+#define MENU_SHELL_CLASS(w)  GTK_MENU_SHELL_CLASS (GTK_OBJECT (w)->klass)
+
+
+enum {
+  DEACTIVATE,
+  LAST_SIGNAL
+};
+
+
+static void gtk_menu_shell_class_init        (GtkMenuShellClass *klass);
+static void gtk_menu_shell_init              (GtkMenuShell      *menu_shell);
+static void gtk_menu_shell_destroy           (GtkObject         *object);
+static void gtk_menu_shell_map               (GtkWidget         *widget);
+static void gtk_menu_shell_realize           (GtkWidget         *widget);
+static gint gtk_menu_shell_button_press      (GtkWidget         *widget,
+					      GdkEventButton    *event);
+static gint gtk_menu_shell_button_release    (GtkWidget         *widget,
+					      GdkEventButton    *event);
+static gint gtk_menu_shell_enter_notify      (GtkWidget         *widget,
+					      GdkEventCrossing  *event);
+static gint gtk_menu_shell_leave_notify      (GtkWidget         *widget,
+					      GdkEventCrossing  *event);
+static void gtk_menu_shell_add               (GtkContainer      *container,
+					      GtkWidget         *widget);
+static void gtk_menu_shell_remove            (GtkContainer      *container,
+					      GtkWidget         *widget);
+static void gtk_menu_shell_foreach           (GtkContainer      *container,
+					      GtkCallback        callback,
+					      gpointer           callback_data);
+static void gtk_real_menu_shell_deactivate   (GtkMenuShell      *menu_shell);
+static gint gtk_menu_shell_is_item           (GtkMenuShell      *menu_shell,
+					      GtkWidget         *child);
+
+
+static GtkContainerClass *parent_class = NULL;
+static gint menu_shell_signals[LAST_SIGNAL] = { 0 };
+
+
+guint
+gtk_menu_shell_get_type ()
+{
+  static guint menu_shell_type = 0;
+
+  if (!menu_shell_type)
+    {
+      GtkTypeInfo menu_shell_info =
+      {
+	"GtkMenuShell",
+	sizeof (GtkMenuShell),
+	sizeof (GtkMenuShellClass),
+	(GtkClassInitFunc) gtk_menu_shell_class_init,
+	(GtkObjectInitFunc) gtk_menu_shell_init,
+	(GtkArgFunc) NULL,
+      };
+
+      menu_shell_type = gtk_type_unique (gtk_container_get_type (), &menu_shell_info);
+    }
+
+  return menu_shell_type;
+}
+
+static void
+gtk_menu_shell_class_init (GtkMenuShellClass *klass)
+{
+  GtkObjectClass *object_class;
+  GtkWidgetClass *widget_class;
+  GtkContainerClass *container_class;
+
+  object_class = (GtkObjectClass*) klass;
+  widget_class = (GtkWidgetClass*) klass;
+  container_class = (GtkContainerClass*) klass;
+
+  parent_class = gtk_type_class (gtk_container_get_type ());
+
+  menu_shell_signals[DEACTIVATE] =
+    gtk_signal_new ("deactivate",
+                    GTK_RUN_FIRST,
+                    object_class->type,
+                    GTK_SIGNAL_OFFSET (GtkMenuShellClass, deactivate),
+                    gtk_signal_default_marshaller,
+		    GTK_TYPE_NONE, 0);
+
+  gtk_object_class_add_signals (object_class, menu_shell_signals, LAST_SIGNAL);
+
+  object_class->destroy = gtk_menu_shell_destroy;
+
+  widget_class->map = gtk_menu_shell_map;
+  widget_class->realize = gtk_menu_shell_realize;
+  widget_class->button_press_event = gtk_menu_shell_button_press;
+  widget_class->button_release_event = gtk_menu_shell_button_release;
+  widget_class->enter_notify_event = gtk_menu_shell_enter_notify;
+  widget_class->leave_notify_event = gtk_menu_shell_leave_notify;
+
+  container_class->add = gtk_menu_shell_add;
+  container_class->remove = gtk_menu_shell_remove;
+  container_class->foreach = gtk_menu_shell_foreach;
+
+  klass->submenu_placement = GTK_TOP_BOTTOM;
+  klass->deactivate = gtk_real_menu_shell_deactivate;
+}
+
+static void
+gtk_menu_shell_init (GtkMenuShell *menu_shell)
+{
+  menu_shell->children = NULL;
+  menu_shell->active_menu_item = NULL;
+  menu_shell->parent_menu_shell = NULL;
+  menu_shell->active = FALSE;
+  menu_shell->have_grab = FALSE;
+  menu_shell->have_xgrab = FALSE;
+  menu_shell->ignore_leave = FALSE;
+  menu_shell->button = 0;
+  menu_shell->menu_flag = 0;
+  menu_shell->activate_time = 0;
+}
+
+void
+gtk_menu_shell_append (GtkMenuShell *menu_shell,
+		       GtkWidget    *child)
+{
+  gtk_menu_shell_insert (menu_shell, child, -1);
+}
+
+void
+gtk_menu_shell_prepend (GtkMenuShell *menu_shell,
+			GtkWidget    *child)
+{
+  gtk_menu_shell_insert (menu_shell, child, 0);
+}
+
+void
+gtk_menu_shell_insert (GtkMenuShell *menu_shell,
+		       GtkWidget    *child,
+		       gint          position)
+{
+  GList *tmp_list;
+  GList *new_list;
+  gint nchildren;
+
+  g_return_if_fail (menu_shell != NULL);
+  g_return_if_fail (GTK_IS_MENU_SHELL (menu_shell));
+  g_return_if_fail (child != NULL);
+  g_return_if_fail (GTK_IS_MENU_ITEM (child));
+
+  gtk_widget_set_parent (child, GTK_WIDGET (menu_shell));
+
+  if (GTK_WIDGET_VISIBLE (child->parent))
+    {
+      if (GTK_WIDGET_REALIZED (child->parent) &&
+	  !GTK_WIDGET_REALIZED (child))
+	gtk_widget_realize (child);
+
+      if (GTK_WIDGET_MAPPED (child->parent) &&
+	  !GTK_WIDGET_MAPPED (child))
+	gtk_widget_map (child);
+    }
+
+  nchildren = g_list_length (menu_shell->children);
+  if ((position < 0) || (position > nchildren))
+    position = nchildren;
+
+  if (position == nchildren)
+    {
+      menu_shell->children = g_list_append (menu_shell->children, child);
+    }
+  else
+    {
+      tmp_list = g_list_nth (menu_shell->children, position);
+      new_list = g_list_alloc ();
+      new_list->data = child;
+
+      if (tmp_list->prev)
+	tmp_list->prev->next = new_list;
+      new_list->next = tmp_list;
+      new_list->prev = tmp_list->prev;
+      tmp_list->prev = new_list;
+
+      if (tmp_list == menu_shell->children)
+	menu_shell->children = new_list;
+    }
+
+  if (GTK_WIDGET_VISIBLE (menu_shell))
+    gtk_widget_queue_resize (GTK_WIDGET (menu_shell));
+}
+
+void
+gtk_menu_shell_deactivate (GtkMenuShell *menu_shell)
+{
+  g_return_if_fail (menu_shell != NULL);
+  g_return_if_fail (GTK_IS_MENU_SHELL (menu_shell));
+
+  gtk_signal_emit (GTK_OBJECT (menu_shell), menu_shell_signals[DEACTIVATE]);
+}
+
+static void
+gtk_menu_shell_destroy (GtkObject *object)
+{
+  GtkMenuShell *menu_shell;
+  GtkWidget *child;
+  GList *children;
+
+  g_return_if_fail (object != NULL);
+  g_return_if_fail (GTK_IS_MENU_SHELL (object));
+
+  menu_shell = GTK_MENU_SHELL (object);
+
+  children = menu_shell->children;
+  while (children)
+    {
+      child = children->data;
+      children = children->next;
+
+      child->parent = NULL;
+      gtk_object_unref (GTK_OBJECT (child));
+      gtk_widget_destroy (child);
+    }
+
+  g_list_free (menu_shell->children);
+
+  if (GTK_OBJECT_CLASS (parent_class)->destroy)
+    (* GTK_OBJECT_CLASS (parent_class)->destroy) (object);
+}
+
+static void
+gtk_menu_shell_map (GtkWidget *widget)
+{
+  GtkMenuShell *menu_shell;
+  GtkWidget *child;
+  GList *children;
+
+  g_return_if_fail (widget != NULL);
+  g_return_if_fail (GTK_IS_MENU_SHELL (widget));
+
+  menu_shell = GTK_MENU_SHELL (widget);
+  GTK_WIDGET_SET_FLAGS (menu_shell, GTK_MAPPED);
+  gdk_window_show (widget->window);
+
+  children = menu_shell->children;
+  while (children)
+    {
+      child = children->data;
+      children = children->next;
+
+      if (GTK_WIDGET_VISIBLE (child) && !GTK_WIDGET_MAPPED (child))
+	gtk_widget_map (child);
+    }
+}
+
+static void
+gtk_menu_shell_realize (GtkWidget *widget)
+{
+  GdkWindowAttr attributes;
+  gint attributes_mask;
+
+  g_return_if_fail (widget != NULL);
+  g_return_if_fail (GTK_IS_MENU_SHELL (widget));
+
+  GTK_WIDGET_SET_FLAGS (widget, GTK_REALIZED);
+
+  attributes.x = widget->allocation.x;
+  attributes.y = widget->allocation.y;
+  attributes.width = widget->allocation.width;
+  attributes.height = widget->allocation.height;
+  attributes.window_type = GDK_WINDOW_CHILD;
+  attributes.wclass = GDK_INPUT_OUTPUT;
+  attributes.visual = gtk_widget_get_visual (widget);
+  attributes.colormap = gtk_widget_get_colormap (widget);
+  attributes.event_mask = gtk_widget_get_events (widget);
+  attributes.event_mask |= (GDK_EXPOSURE_MASK |
+			    GDK_BUTTON_PRESS_MASK |
+			    GDK_BUTTON_RELEASE_MASK |
+			    GDK_ENTER_NOTIFY_MASK |
+			    GDK_LEAVE_NOTIFY_MASK);
+
+  attributes_mask = GDK_WA_X | GDK_WA_Y | GDK_WA_VISUAL | GDK_WA_COLORMAP;
+  widget->window = gdk_window_new (widget->parent->window, &attributes, attributes_mask);
+  gdk_window_set_user_data (widget->window, widget);
+
+  widget->style = gtk_style_attach (widget->style, widget->window);
+  gtk_style_set_background (widget->style, widget->window, GTK_STATE_NORMAL);
+}
+
+static gint
+gtk_menu_shell_button_press (GtkWidget      *widget,
+			     GdkEventButton *event)
+{
+  GtkMenuShell *menu_shell;
+  GtkWidget *menu_item;
+
+  g_return_val_if_fail (widget != NULL, FALSE);
+  g_return_val_if_fail (GTK_IS_MENU_SHELL (widget), FALSE);
+  g_return_val_if_fail (event != NULL, FALSE);
+
+  if (event->type != GDK_BUTTON_PRESS)
+    return FALSE;
+
+  menu_shell = GTK_MENU_SHELL (widget);
+
+  if (menu_shell->parent_menu_shell)
+    {
+      gtk_widget_event (menu_shell->parent_menu_shell, (GdkEvent*) event);
+    }
+  else if (!menu_shell->active || !menu_shell->button)
+    {
+      if (!menu_shell->active)
+	{
+	  gtk_grab_add (GTK_WIDGET (widget));
+	  menu_shell->have_grab = TRUE;
+	}
+      menu_shell->active = TRUE;
+
+      menu_item = gtk_get_event_widget ((GdkEvent*) event);
+      if (GTK_IS_MENU_ITEM (menu_item) && gtk_menu_shell_is_item (menu_shell, menu_item))
+	{
+	  if ((menu_item->parent == widget) &&
+	      (menu_item != menu_shell->active_menu_item))
+	    {
+	      if (menu_shell->active_menu_item)
+		gtk_menu_item_deselect (GTK_MENU_ITEM (menu_shell->active_menu_item));
+
+	      menu_shell->active_menu_item = menu_item;
+	      gtk_menu_item_set_placement (GTK_MENU_ITEM (menu_shell->active_menu_item),
+					   MENU_SHELL_CLASS (menu_shell)->submenu_placement);
+	      gtk_menu_item_select (GTK_MENU_ITEM (menu_shell->active_menu_item));
+	    }
+	}
+      else if (!menu_shell->button)
+	{
+	  gtk_menu_shell_deactivate (menu_shell);
+	}
+
+      if (menu_shell->active)
+	menu_shell->button = event->button;
+    }
+  else
+    {
+      widget = gtk_get_event_widget ((GdkEvent*) event);
+      if (widget == GTK_WIDGET (menu_shell))
+	gtk_menu_shell_deactivate (menu_shell);
+    }
+
+  return TRUE;
+}
+
+static gint
+gtk_menu_shell_button_release (GtkWidget      *widget,
+			       GdkEventButton *event)
+{
+  GtkMenuShell *menu_shell;
+  GtkWidget *menu_item;
+  gint deactivate;
+
+  g_return_val_if_fail (widget != NULL, FALSE);
+  g_return_val_if_fail (GTK_IS_MENU_SHELL (widget), FALSE);
+  g_return_val_if_fail (event != NULL, FALSE);
+
+  menu_shell = GTK_MENU_SHELL (widget);
+  if (menu_shell->active)
+    {
+      if (menu_shell->button && (event->button != menu_shell->button))
+	{
+	  menu_shell->button = 0;
+	  if (menu_shell->parent_menu_shell)
+	    gtk_widget_event (menu_shell->parent_menu_shell, (GdkEvent*) event);
+	  return TRUE;
+	}
+
+      menu_shell->button = 0;
+      menu_item = gtk_get_event_widget ((GdkEvent*) event);
+      deactivate = TRUE;
+
+      if ((event->time - menu_shell->activate_time) > MENU_SHELL_TIMEOUT)
+	{
+	  if (menu_shell->active_menu_item == menu_item)
+	    {
+	      if (GTK_MENU_ITEM (menu_item)->submenu == NULL)
+		{
+		  gtk_menu_shell_deactivate (menu_shell);
+		  gtk_widget_activate (menu_item);
+		  return TRUE;
+		}
+	    }
+	  else if (menu_shell->parent_menu_shell)
+	    {
+	      menu_shell->active = TRUE;
+	      gtk_widget_event (menu_shell->parent_menu_shell, (GdkEvent*) event);
+	      return TRUE;
+	    }
+	}
+      else
+	deactivate = FALSE;
+
+      if ((!deactivate || (menu_shell->active_menu_item == menu_item)) &&
+	  (gdk_pointer_grab (widget->window, TRUE,
+			     GDK_BUTTON_PRESS_MASK | GDK_BUTTON_RELEASE_MASK |
+			     GDK_ENTER_NOTIFY_MASK | GDK_LEAVE_NOTIFY_MASK,
+			     NULL, NULL, event->time) == 0))
+	{
+	  deactivate = FALSE;
+	  menu_shell->have_xgrab = TRUE;
+	  menu_shell->ignore_leave = TRUE;
+	}
+      else
+	deactivate = TRUE;
+
+      if (deactivate)
+	gtk_menu_shell_deactivate (menu_shell);
+    }
+
+  return TRUE;
+}
+
+static gint
+gtk_menu_shell_enter_notify (GtkWidget        *widget,
+			     GdkEventCrossing *event)
+{
+  GtkMenuShell *menu_shell;
+  GtkWidget *menu_item;
+
+  g_return_val_if_fail (widget != NULL, FALSE);
+  g_return_val_if_fail (GTK_IS_MENU_SHELL (widget), FALSE);
+  g_return_val_if_fail (event != NULL, FALSE);
+
+  menu_shell = GTK_MENU_SHELL (widget);
+  if (menu_shell->active)
+    {
+      menu_item = gtk_get_event_widget ((GdkEvent*) event);
+
+      if (!GTK_WIDGET_IS_SENSITIVE (menu_item))
+	return TRUE;
+
+      if ((menu_item->parent == widget) &&
+	  (menu_shell->active_menu_item != menu_item) &&
+	  GTK_IS_MENU_ITEM (menu_item))
+	{
+	  if ((event->detail != GDK_NOTIFY_INFERIOR) &&
+	      (GTK_WIDGET_STATE (menu_item) != GTK_STATE_PRELIGHT))
+	    {
+	      if (menu_shell->active_menu_item)
+		gtk_menu_item_deselect (GTK_MENU_ITEM (menu_shell->active_menu_item));
+
+	      menu_shell->active_menu_item = menu_item;
+	      gtk_menu_item_set_placement (GTK_MENU_ITEM (menu_shell->active_menu_item),
+					   MENU_SHELL_CLASS (menu_shell)->submenu_placement);
+	      gtk_menu_item_select (GTK_MENU_ITEM (menu_shell->active_menu_item));
+	    }
+	}
+      else if (menu_shell->parent_menu_shell)
+	{
+	  gtk_widget_event (menu_shell->parent_menu_shell, (GdkEvent*) event);
+	}
+    }
+
+  return TRUE;
+}
+
+static gint
+gtk_menu_shell_leave_notify (GtkWidget        *widget,
+			     GdkEventCrossing *event)
+{
+  GtkMenuShell *menu_shell;
+  GtkMenuItem *menu_item;
+  GtkWidget *event_widget;
+
+  g_return_val_if_fail (widget != NULL, FALSE);
+  g_return_val_if_fail (GTK_IS_MENU_SHELL (widget), FALSE);
+  g_return_val_if_fail (event != NULL, FALSE);
+
+  if (GTK_WIDGET_VISIBLE (widget))
+    {
+      menu_shell = GTK_MENU_SHELL (widget);
+      event_widget = gtk_get_event_widget ((GdkEvent*) event);
+
+      if (!GTK_IS_MENU_ITEM (event_widget))
+	return TRUE;
+
+      menu_item = GTK_MENU_ITEM (event_widget);
+
+      if (!GTK_WIDGET_IS_SENSITIVE (menu_item))
+	return TRUE;
+
+      if (menu_shell->ignore_leave)
+	{
+	  menu_shell->ignore_leave = FALSE;
+	  return TRUE;
+	}
+
+      if ((menu_shell->active_menu_item == event_widget) &&
+	  (menu_item->submenu == NULL))
+	{
+	  if ((event->detail != GDK_NOTIFY_INFERIOR) &&
+	      (GTK_WIDGET_STATE (menu_item) != GTK_STATE_NORMAL))
+	    {
+	      gtk_menu_item_deselect (GTK_MENU_ITEM (menu_shell->active_menu_item));
+	      menu_shell->active_menu_item = NULL;
+	    }
+	}
+      else if (menu_shell->parent_menu_shell)
+	{
+	  gtk_widget_event (menu_shell->parent_menu_shell, (GdkEvent*) event);
+	}
+    }
+
+  return TRUE;
+}
+
+static void
+gtk_menu_shell_add (GtkContainer *container,
+		    GtkWidget    *widget)
+{
+  gtk_menu_shell_append (GTK_MENU_SHELL (container), widget);
+}
+
+static void
+gtk_menu_shell_remove (GtkContainer *container,
+		       GtkWidget    *widget)
+{
+  GtkMenuShell *menu_shell;
+
+  g_return_if_fail (container != NULL);
+  g_return_if_fail (GTK_IS_MENU_SHELL (container));
+  g_return_if_fail (widget != NULL);
+  g_return_if_fail (GTK_IS_MENU_ITEM (widget));
+
+  gtk_widget_unparent (widget);
+
+  menu_shell = GTK_MENU_SHELL (container);
+  menu_shell->children = g_list_remove (menu_shell->children, widget);
+
+  if (GTK_WIDGET_VISIBLE (widget) && GTK_WIDGET_VISIBLE (container))
+    gtk_widget_queue_resize (GTK_WIDGET (container));
+}
+
+static void
+gtk_menu_shell_foreach (GtkContainer *container,
+			GtkCallback   callback,
+			gpointer      callback_data)
+{
+  GtkMenuShell *menu_shell;
+  GtkWidget *child;
+  GList *children;
+
+  g_return_if_fail (container != NULL);
+  g_return_if_fail (GTK_IS_MENU_SHELL (container));
+  g_return_if_fail (callback != NULL);
+
+  menu_shell = GTK_MENU_SHELL (container);
+
+  children = menu_shell->children;
+  while (children)
+    {
+      child = children->data;
+      children = children->next;
+
+      (* callback) (child, callback_data);
+    }
+}
+
+
+static void
+gtk_real_menu_shell_deactivate (GtkMenuShell *menu_shell)
+{
+  g_return_if_fail (menu_shell != NULL);
+  g_return_if_fail (GTK_IS_MENU_SHELL (menu_shell));
+
+  if (menu_shell->active)
+    {
+      menu_shell->button = 0;
+      menu_shell->active = FALSE;
+
+      if (menu_shell->active_menu_item)
+	{
+	  gtk_menu_item_deselect (GTK_MENU_ITEM (menu_shell->active_menu_item));
+	  menu_shell->active_menu_item = NULL;
+	}
+
+      if (menu_shell->have_grab)
+	{
+	  menu_shell->have_grab = FALSE;
+	  gtk_grab_remove (GTK_WIDGET (menu_shell));
+	}
+      if (menu_shell->have_xgrab)
+	{
+	  menu_shell->have_xgrab = FALSE;
+	  gdk_pointer_ungrab (GDK_CURRENT_TIME);
+	}
+    }
+}
+
+static gint
+gtk_menu_shell_is_item (GtkMenuShell *menu_shell,
+			GtkWidget    *child)
+{
+  GtkMenuShell *parent;
+
+  g_return_val_if_fail (menu_shell != NULL, FALSE);
+  g_return_val_if_fail (GTK_IS_MENU_SHELL (menu_shell), FALSE);
+  g_return_val_if_fail (child != NULL, FALSE);
+
+  parent = GTK_MENU_SHELL (child->parent);
+  while (parent && GTK_IS_MENU_SHELL (parent))
+    {
+      if (parent == menu_shell)
+	return TRUE;
+      parent = GTK_MENU_SHELL (parent->parent_menu_shell);
+    }
+
+  return FALSE;
+}