mirror of
https://gitlab.gnome.org/GNOME/gtk.git
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393 lines
12 KiB
C
393 lines
12 KiB
C
/* Lists/Characters
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*
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* This demo shows a multi-column representation of some parts
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* of the Unicode Character Database, or UCD.
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*
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* The dataset used here has 33 796 items.
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*/
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#include <gtk/gtk.h>
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#include "script-names.h"
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#include "unicode-names.h"
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#define UCD_TYPE_ITEM (ucd_item_get_type ())
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G_DECLARE_FINAL_TYPE (UcdItem, ucd_item, UCD, ITEM, GObject)
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struct _UcdItem
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{
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GObject parent_instance;
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gunichar codepoint;
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const char *name;
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};
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struct _UcdItemClass
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{
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GObjectClass parent_class;
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};
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G_DEFINE_TYPE (UcdItem, ucd_item, G_TYPE_OBJECT)
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static void
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ucd_item_init (UcdItem *item)
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{
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}
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static void
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ucd_item_class_init (UcdItemClass *class)
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{
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}
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static UcdItem *
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ucd_item_new (gunichar codepoint,
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const char *name)
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{
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UcdItem *item;
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item = g_object_new (UCD_TYPE_ITEM, NULL);
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item->codepoint = codepoint;
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item->name = name;
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return item;
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}
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static gunichar
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ucd_item_get_codepoint (UcdItem *item)
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{
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return item->codepoint;
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}
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static const char *
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ucd_item_get_name (UcdItem *item)
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{
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return item->name;
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}
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static GListModel *
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ucd_model_new (void)
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{
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GBytes *bytes;
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GVariant *v;
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GVariantIter *iter;
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GListStore *store;
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guint u;
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char *name;
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bytes = g_resources_lookup_data ("/listview_ucd_data/ucdnames.data", 0, NULL);
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v = g_variant_ref_sink (g_variant_new_from_bytes (G_VARIANT_TYPE ("a(us)"), bytes, TRUE));
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iter = g_variant_iter_new (v);
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store = g_list_store_new (G_TYPE_OBJECT);
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while (g_variant_iter_next (iter, "(u&s)", &u, &name))
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{
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if (u == 0)
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continue;
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UcdItem *item = ucd_item_new (u, name);
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g_list_store_append (store, item);
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g_object_unref (item);
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}
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g_variant_iter_free (iter);
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g_variant_unref (v);
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g_bytes_unref (bytes);
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return G_LIST_MODEL (store);
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}
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static void
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setup_centered_label (GtkSignalListItemFactory *factory,
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GObject *listitem)
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{
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GtkWidget *label;
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label = gtk_label_new ("");
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gtk_list_item_set_child (GTK_LIST_ITEM (listitem), label);
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}
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static void
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setup_label (GtkSignalListItemFactory *factory,
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GObject *listitem)
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{
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GtkWidget *label;
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label = gtk_label_new ("");
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gtk_label_set_xalign (GTK_LABEL (label), 0);
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gtk_list_item_set_child (GTK_LIST_ITEM (listitem), label);
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}
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static void
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setup_ellipsizing_label (GtkSignalListItemFactory *factory,
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GObject *listitem)
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{
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GtkWidget *label;
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label = gtk_label_new ("");
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gtk_label_set_xalign (GTK_LABEL (label), 0);
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gtk_label_set_ellipsize (GTK_LABEL (label), PANGO_ELLIPSIZE_END);
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gtk_label_set_width_chars (GTK_LABEL (label), 20);
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gtk_list_item_set_child (GTK_LIST_ITEM (listitem), label);
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}
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static void
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bind_codepoint (GtkSignalListItemFactory *factory,
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GObject *listitem)
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{
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GtkWidget *label;
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GObject *item;
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gunichar codepoint;
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char buffer[16] = { 0, };
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label = gtk_list_item_get_child (GTK_LIST_ITEM (listitem));
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item = gtk_list_item_get_item (GTK_LIST_ITEM (listitem));
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codepoint = ucd_item_get_codepoint (UCD_ITEM (item));
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g_snprintf (buffer, 10, "%#06x", codepoint);
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gtk_label_set_label (GTK_LABEL (label), buffer);
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}
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static void
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bind_char (GtkSignalListItemFactory *factory,
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GObject *listitem)
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{
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GtkWidget *label;
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GObject *item;
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gunichar codepoint;
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char buffer[16] = { 0, };
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label = gtk_list_item_get_child (GTK_LIST_ITEM (listitem));
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item = gtk_list_item_get_item (GTK_LIST_ITEM (listitem));
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codepoint = ucd_item_get_codepoint (UCD_ITEM (item));
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if (g_unichar_isprint (codepoint))
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g_unichar_to_utf8 (codepoint, buffer);
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gtk_label_set_label (GTK_LABEL (label), buffer);
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}
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static void
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bind_name (GtkSignalListItemFactory *factory,
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GObject *listitem)
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{
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GtkWidget *label;
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GObject *item;
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const char *name;
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label = gtk_list_item_get_child (GTK_LIST_ITEM (listitem));
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item = gtk_list_item_get_item (GTK_LIST_ITEM (listitem));
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name = ucd_item_get_name (UCD_ITEM (item));
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gtk_label_set_label (GTK_LABEL (label), name);
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}
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static void
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bind_type (GtkSignalListItemFactory *factory,
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GObject *listitem)
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{
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GtkWidget *label;
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GObject *item;
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gunichar codepoint;
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label = gtk_list_item_get_child (GTK_LIST_ITEM (listitem));
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item = gtk_list_item_get_item (GTK_LIST_ITEM (listitem));
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codepoint = ucd_item_get_codepoint (UCD_ITEM (item));
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gtk_label_set_label (GTK_LABEL (label), get_unicode_type_name (g_unichar_type (codepoint)));
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}
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static void
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bind_break_type (GtkSignalListItemFactory *factory,
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GObject *listitem)
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{
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GtkWidget *label;
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GObject *item;
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gunichar codepoint;
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label = gtk_list_item_get_child (GTK_LIST_ITEM (listitem));
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item = gtk_list_item_get_item (GTK_LIST_ITEM (listitem));
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codepoint = ucd_item_get_codepoint (UCD_ITEM (item));
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gtk_label_set_label (GTK_LABEL (label), get_break_type_name (g_unichar_break_type (codepoint)));
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}
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static void
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bind_combining_class (GtkSignalListItemFactory *factory,
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GObject *listitem)
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{
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GtkWidget *label;
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GObject *item;
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gunichar codepoint;
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label = gtk_list_item_get_child (GTK_LIST_ITEM (listitem));
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item = gtk_list_item_get_item (GTK_LIST_ITEM (listitem));
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codepoint = ucd_item_get_codepoint (UCD_ITEM (item));
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gtk_label_set_label (GTK_LABEL (label), get_combining_class_name (g_unichar_combining_class (codepoint)));
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}
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static void
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bind_script (GtkSignalListItemFactory *factory,
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GObject *listitem)
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{
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GtkWidget *label;
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GObject *item;
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gunichar codepoint;
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GUnicodeScript script;
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label = gtk_list_item_get_child (GTK_LIST_ITEM (listitem));
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item = gtk_list_item_get_item (GTK_LIST_ITEM (listitem));
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codepoint = ucd_item_get_codepoint (UCD_ITEM (item));
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script = g_unichar_get_script (codepoint);
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gtk_label_set_label (GTK_LABEL (label), get_script_name (script));
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}
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static void
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selection_changed (GObject *object,
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GParamSpec *pspec,
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GtkWidget *label)
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{
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UcdItem *item;
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guint codepoint;
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char buffer[16] = { 0, };
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item = gtk_single_selection_get_selected_item (GTK_SINGLE_SELECTION (object));
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codepoint = ucd_item_get_codepoint (item);
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if (g_unichar_isprint (codepoint))
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g_unichar_to_utf8 (codepoint, buffer);
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gtk_label_set_label (GTK_LABEL (label), buffer);
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}
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GtkWidget *
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create_ucd_view (GtkWidget *label)
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{
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GtkWidget *cv;
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GListModel *ucd_model;
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GtkSingleSelection *selection;
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GtkListItemFactory *factory;
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GtkColumnViewColumn *column;
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ucd_model = ucd_model_new ();
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selection = gtk_single_selection_new (ucd_model);
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gtk_single_selection_set_autoselect (selection, TRUE);
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gtk_single_selection_set_can_unselect (selection, FALSE);
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if (label)
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g_signal_connect (selection, "notify::selected", G_CALLBACK (selection_changed), label);
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cv = gtk_column_view_new (GTK_SELECTION_MODEL (selection));
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gtk_column_view_set_show_column_separators (GTK_COLUMN_VIEW (cv), TRUE);
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factory = gtk_signal_list_item_factory_new ();
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g_signal_connect (factory, "setup", G_CALLBACK (setup_centered_label), NULL);
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g_signal_connect (factory, "bind", G_CALLBACK (bind_codepoint), NULL);
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column = gtk_column_view_column_new ("Codepoint", factory);
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gtk_column_view_append_column (GTK_COLUMN_VIEW (cv), column);
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g_object_unref (column);
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factory = gtk_signal_list_item_factory_new ();
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g_signal_connect (factory, "setup", G_CALLBACK (setup_centered_label), NULL);
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g_signal_connect (factory, "bind", G_CALLBACK (bind_char), NULL);
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column = gtk_column_view_column_new ("Char", factory);
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gtk_column_view_append_column (GTK_COLUMN_VIEW (cv), column);
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g_object_unref (column);
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factory = gtk_signal_list_item_factory_new ();
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g_signal_connect (factory, "setup", G_CALLBACK (setup_ellipsizing_label), NULL);
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g_signal_connect (factory, "bind", G_CALLBACK (bind_name), NULL);
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column = gtk_column_view_column_new ("Name", factory);
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gtk_column_view_column_set_resizable (column, TRUE);
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gtk_column_view_append_column (GTK_COLUMN_VIEW (cv), column);
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g_object_unref (column);
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factory = gtk_signal_list_item_factory_new ();
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g_signal_connect (factory, "setup", G_CALLBACK (setup_ellipsizing_label), NULL);
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g_signal_connect (factory, "bind", G_CALLBACK (bind_type), NULL);
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column = gtk_column_view_column_new ("Type", factory);
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gtk_column_view_column_set_resizable (column, TRUE);
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gtk_column_view_append_column (GTK_COLUMN_VIEW (cv), column);
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g_object_unref (column);
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factory = gtk_signal_list_item_factory_new ();
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g_signal_connect (factory, "setup", G_CALLBACK (setup_ellipsizing_label), NULL);
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g_signal_connect (factory, "bind", G_CALLBACK (bind_break_type), NULL);
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column = gtk_column_view_column_new ("Break Type", factory);
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gtk_column_view_column_set_resizable (column, TRUE);
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gtk_column_view_append_column (GTK_COLUMN_VIEW (cv), column);
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g_object_unref (column);
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factory = gtk_signal_list_item_factory_new ();
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g_signal_connect (factory, "setup", G_CALLBACK (setup_label), NULL);
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g_signal_connect (factory, "bind", G_CALLBACK (bind_combining_class), NULL);
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column = gtk_column_view_column_new ("Combining Class", factory);
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gtk_column_view_column_set_resizable (column, TRUE);
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gtk_column_view_append_column (GTK_COLUMN_VIEW (cv), column);
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g_object_unref (column);
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factory = gtk_signal_list_item_factory_new ();
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g_signal_connect (factory, "setup", G_CALLBACK (setup_label), NULL);
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g_signal_connect (factory, "bind", G_CALLBACK (bind_script), NULL);
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column = gtk_column_view_column_new ("Script", factory);
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gtk_column_view_column_set_resizable (column, TRUE);
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gtk_column_view_append_column (GTK_COLUMN_VIEW (cv), column);
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g_object_unref (column);
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return cv;
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}
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static GtkWidget *window;
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static void
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remove_provider (gpointer data)
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{
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GtkStyleProvider *provider = GTK_STYLE_PROVIDER (data);
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gtk_style_context_remove_provider_for_display (gdk_display_get_default (), provider);
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g_object_unref (provider);
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}
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GtkWidget *
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do_listview_ucd (GtkWidget *do_widget)
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{
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if (window == NULL)
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{
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GtkWidget *listview, *sw;
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GtkWidget *box, *label;
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GtkCssProvider *provider;
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window = gtk_window_new ();
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gtk_window_set_default_size (GTK_WINDOW (window), 800, 400);
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gtk_window_set_title (GTK_WINDOW (window), "Characters");
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gtk_window_set_display (GTK_WINDOW (window),
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gtk_widget_get_display (do_widget));
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g_object_add_weak_pointer (G_OBJECT (window), (gpointer *) &window);
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box = gtk_box_new (GTK_ORIENTATION_HORIZONTAL, 0);
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label = gtk_label_new ("");
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gtk_label_set_width_chars (GTK_LABEL (label), 2);
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gtk_widget_add_css_class (label, "enormous");
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provider = gtk_css_provider_new ();
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gtk_css_provider_load_from_data (provider, "label.enormous { font-size: 80px; }", -1);
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gtk_style_context_add_provider_for_display (gdk_display_get_default (), GTK_STYLE_PROVIDER (provider), 800);
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gtk_widget_set_hexpand (label, TRUE);
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gtk_box_append (GTK_BOX (box), label);
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sw = gtk_scrolled_window_new ();
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gtk_scrolled_window_set_propagate_natural_width (GTK_SCROLLED_WINDOW (sw), TRUE);
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listview = create_ucd_view (label);
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gtk_scrolled_window_set_child (GTK_SCROLLED_WINDOW (sw), listview);
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gtk_box_prepend (GTK_BOX (box), sw);
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gtk_window_set_child (GTK_WINDOW (window), box);
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g_object_set_data_full (G_OBJECT (window), "provider", provider, remove_provider);
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}
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if (!gtk_widget_get_visible (window))
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gtk_widget_show (window);
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else
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gtk_window_destroy (GTK_WINDOW (window));
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return window;
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}
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