Add Unicode control char menu, based on patch from Dov. Bug #63495

2001-12-06  Havoc Pennington  <hp@redhat.com>

        Add Unicode control char menu, based on patch from Dov.
        Bug #63495

        * gtk/gtkentry.c (gtk_entry_commit_cb): share code via
        gtk_entry_enter_text
        (gtk_entry_enter_text): function to do "typing in text"
        (popup_targets_received): add the Unicode menu items

        * gtk/gtktextview.c (popup_targets_received): add missing mnemonic
        on Input Methods item, and add the unicode menu items.

        * gtk/gtktextutil.h, gtk/gtktextutil.c: private utilities to be
        used in GtkEntry and GtkTextView - may become public later.

1 files changed, 117 insertions, 0 deletions

diff --git a/gtk/gtktextutil.c b/gtk/gtktextutil.c
new file mode 100644
index 0000000000..7a53fab676
--- /dev/null
+++ b/gtk/gtktextutil.c
@@ -0,0 +1,117 @@
+/* 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 Lesser 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
+ * Lesser General Public License for more details.
+ *
+ * You should have received a copy of the GNU Lesser General Public
+ * License along with this library; if not, write to the
+ * Free Software Foundation, Inc., 59 Temple Place - Suite 330,
+ * Boston, MA 02111-1307, USA.
+ */
+
+/*
+ * Modified by the GTK+ Team and others 1997-2001.  See the AUTHORS
+ * file for a list of people on the GTK+ Team.  See the ChangeLog
+ * files for a list of changes.  These files are distributed with
+ * GTK+ at ftp://ftp.gtk.org/pub/gtk/. 
+ */
+
+#include "gtktextutil.h"
+#include "gtkintl.h"
+#include "gtkmenuitem.h"
+
+typedef struct _GtkUnicodeMenuEntry GtkUnicodeMenuEntry;
+typedef struct _GtkTextUtilCallbackInfo GtkTextUtilCallbackInfo;
+
+struct _GtkUnicodeMenuEntry {
+  const char *label;
+  gunichar ch;
+};
+
+struct _GtkTextUtilCallbackInfo
+{
+  GtkTextUtilCharChosenFunc func;
+  gpointer data;
+};
+
+GtkUnicodeMenuEntry bidi_menu_entries[] = {
+  { N_("LRM _Left-to-right mark"), 0x200E },
+  { N_("RLM _Right-to-left mark"), 0x200F },
+  { N_("LRE Left-to-right _embedding"), 0x202A },
+  { N_("RLE Right-to-left e_mbedding"), 0x202B },
+  { N_("LRO Left-to-right _override"), 0x202D },
+  { N_("RLO Right-to-left o_verride"), 0x202E },
+  { N_("PDF _Pop directional formatting"), 0x202C },
+  { N_("ZWS _Zero width space"), 0x200B },
+  { N_("ZWN Zero width _joiner"), 0x200D },
+  { N_("ZWNJ Zero width _non-joiner"), 0x200C }
+};
+
+static void
+activate_cb (GtkWidget *menu_item,
+             gpointer   data)
+{
+  GtkUnicodeMenuEntry *entry;
+  GtkTextUtilCallbackInfo *info = data;
+  char buf[7];
+  
+  entry = g_object_get_data (G_OBJECT (menu_item), "gtk-unicode-menu-entry");
+
+  buf[g_unichar_to_utf8 (entry->ch, buf)] = '\0';
+  
+  (* info->func) (buf, info->data);
+}
+
+/**
+ * _gtk_text_util_append_special_char_menuitems
+ * @menushell: a #GtkMenuShell
+ * @callback:  call this when an item is chosen
+ * @data: data for callback
+ * 
+ * Add menuitems for various bidi control characters  to a menu;
+ * the menuitems, when selected, will call the given function
+ * with the chosen character.
+ *
+ * This function is private/internal in GTK 2.0, the functionality may
+ * become public sometime, but it probably needs more thought first.
+ * e.g. maybe there should be a way to just get the list of items,
+ * instead of requiring the menu items to be created.
+ **/
+void
+_gtk_text_util_append_special_char_menuitems (GtkMenuShell              *menushell,
+                                              GtkTextUtilCharChosenFunc  func,
+                                              gpointer                   data)
+{
+  int i;
+  
+  for (i = 0; i < G_N_ELEMENTS (bidi_menu_entries); i++)
+    {
+      GtkWidget *menuitem;
+      GtkTextUtilCallbackInfo *info;
+
+      /* wasteful to have a bunch of copies, but simplifies mem management */
+      info = g_new (GtkTextUtilCallbackInfo, 1);
+      info->func = func;
+      info->data = data;
+      
+      menuitem = gtk_menu_item_new_with_mnemonic (bidi_menu_entries[i].label);
+      g_object_set_data (G_OBJECT (menuitem), "gtk-unicode-menu-entry",
+                         &bidi_menu_entries[i]);
+      
+      g_signal_connect_data (G_OBJECT (menuitem), "activate",
+                             G_CALLBACK (activate_cb),
+                             info, (GClosureNotify) g_free, 0);
+      
+      gtk_widget_show (menuitem);
+      gtk_menu_shell_append (menushell, menuitem);
+    }
+}
+