mirror of
https://gitlab.gnome.org/GNOME/gtk.git
synced 2024-09-21 14:24:19 +00:00
437 lines
12 KiB
C
437 lines
12 KiB
C
/* Combo Boxes
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*
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* The GtkComboBox widget allows to select one option out of a list.
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* The GtkComboBoxEntry additionally allows the user to enter a value
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* that is not in the list of options.
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*
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* How the options are displayed is controlled by cell renderers.
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*/
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#include <glib/gi18n.h>
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#include <gtk/gtk.h>
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enum
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{
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ICON_NAME_COL,
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TEXT_COL
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};
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static GtkTreeModel *
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create_icon_store (void)
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{
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const gchar *icon_names[6] = {
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"dialog-warning",
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"process-stop",
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"document-new",
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"edit-clear",
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NULL,
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"document-open"
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};
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const gchar *labels[6] = {
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N_("Warning"),
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N_("Stop"),
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N_("New"),
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N_("Clear"),
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NULL,
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N_("Open")
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};
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GtkTreeIter iter;
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GtkListStore *store;
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gint i;
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store = gtk_list_store_new (2, G_TYPE_STRING, G_TYPE_STRING);
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for (i = 0; i < G_N_ELEMENTS (icon_names); i++)
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{
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if (icon_names[i])
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{
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gtk_list_store_append (store, &iter);
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gtk_list_store_set (store, &iter,
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ICON_NAME_COL, icon_names[i],
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TEXT_COL, _(labels[i]),
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-1);
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}
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else
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{
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gtk_list_store_append (store, &iter);
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gtk_list_store_set (store, &iter,
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ICON_NAME_COL, NULL,
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TEXT_COL, "separator",
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-1);
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}
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}
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return GTK_TREE_MODEL (store);
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}
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/* A GtkCellLayoutDataFunc that demonstrates how one can control
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* sensitivity of rows. This particular function does nothing
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* useful and just makes the second row insensitive.
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*/
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static void
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set_sensitive (GtkCellLayout *cell_layout,
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GtkCellRenderer *cell,
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GtkTreeModel *tree_model,
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GtkTreeIter *iter,
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gpointer data)
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{
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GtkTreePath *path;
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gint *indices;
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gboolean sensitive;
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path = gtk_tree_model_get_path (tree_model, iter);
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indices = gtk_tree_path_get_indices (path);
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sensitive = indices[0] != 1;
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gtk_tree_path_free (path);
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g_object_set (cell, "sensitive", sensitive, NULL);
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}
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/* A GtkTreeViewRowSeparatorFunc that demonstrates how rows can be
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* rendered as separators. This particular function does nothing
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* useful and just turns the fourth row into a separator.
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*/
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static gboolean
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is_separator (GtkTreeModel *model,
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GtkTreeIter *iter,
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gpointer data)
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{
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GtkTreePath *path;
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gboolean result;
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path = gtk_tree_model_get_path (model, iter);
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result = gtk_tree_path_get_indices (path)[0] == 4;
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gtk_tree_path_free (path);
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return result;
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}
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static GtkTreeModel *
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create_capital_store (void)
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{
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struct {
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gchar *group;
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gchar *capital;
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} capitals[] = {
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{ "A - B", NULL },
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{ NULL, "Albany" },
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{ NULL, "Annapolis" },
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{ NULL, "Atlanta" },
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{ NULL, "Augusta" },
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{ NULL, "Austin" },
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{ NULL, "Baton Rouge" },
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{ NULL, "Bismarck" },
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{ NULL, "Boise" },
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{ NULL, "Boston" },
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{ "C - D", NULL },
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{ NULL, "Carson City" },
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{ NULL, "Charleston" },
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{ NULL, "Cheyenne" },
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{ NULL, "Columbia" },
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{ NULL, "Columbus" },
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{ NULL, "Concord" },
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{ NULL, "Denver" },
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{ NULL, "Des Moines" },
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{ NULL, "Dover" },
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{ "E - J", NULL },
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{ NULL, "Frankfort" },
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{ NULL, "Harrisburg" },
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{ NULL, "Hartford" },
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{ NULL, "Helena" },
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{ NULL, "Honolulu" },
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{ NULL, "Indianapolis" },
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{ NULL, "Jackson" },
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{ NULL, "Jefferson City" },
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{ NULL, "Juneau" },
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{ "K - O" },
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{ NULL, "Lansing" },
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{ NULL, "Lincoln" },
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{ NULL, "Little Rock" },
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{ NULL, "Madison" },
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{ NULL, "Montgomery" },
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{ NULL, "Montpelier" },
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{ NULL, "Nashville" },
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{ NULL, "Oklahoma City" },
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{ NULL, "Olympia" },
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{ NULL, "P - S" },
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{ NULL, "Phoenix" },
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{ NULL, "Pierre" },
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{ NULL, "Providence" },
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{ NULL, "Raleigh" },
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{ NULL, "Richmond" },
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{ NULL, "Sacramento" },
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{ NULL, "Salem" },
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{ NULL, "Salt Lake City" },
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{ NULL, "Santa Fe" },
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{ NULL, "Springfield" },
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{ NULL, "St. Paul" },
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{ "T - Z", NULL },
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{ NULL, "Tallahassee" },
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{ NULL, "Topeka" },
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{ NULL, "Trenton" },
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{ NULL, NULL }
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};
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GtkTreeIter iter, iter2;
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GtkTreeStore *store;
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gint i;
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store = gtk_tree_store_new (1, G_TYPE_STRING);
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for (i = 0; capitals[i].group || capitals[i].capital; i++)
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{
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if (capitals[i].group)
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{
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gtk_tree_store_append (store, &iter, NULL);
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gtk_tree_store_set (store, &iter, 0, capitals[i].group, -1);
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}
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else if (capitals[i].capital)
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{
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gtk_tree_store_append (store, &iter2, &iter);
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gtk_tree_store_set (store, &iter2, 0, capitals[i].capital, -1);
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}
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}
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return GTK_TREE_MODEL (store);
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}
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static void
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is_capital_sensitive (GtkCellLayout *cell_layout,
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GtkCellRenderer *cell,
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GtkTreeModel *tree_model,
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GtkTreeIter *iter,
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gpointer data)
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{
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gboolean sensitive;
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sensitive = !gtk_tree_model_iter_has_child (tree_model, iter);
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g_object_set (cell, "sensitive", sensitive, NULL);
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}
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static void
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fill_combo_entry (GtkWidget *combo)
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{
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gtk_combo_box_text_append_text (GTK_COMBO_BOX_TEXT (combo), "One");
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gtk_combo_box_text_append_text (GTK_COMBO_BOX_TEXT (combo), "Two");
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gtk_combo_box_text_append_text (GTK_COMBO_BOX_TEXT (combo), "2\302\275");
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gtk_combo_box_text_append_text (GTK_COMBO_BOX_TEXT (combo), "Three");
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}
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/* A simple validating entry */
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#define TYPE_MASK_ENTRY (mask_entry_get_type ())
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#define MASK_ENTRY(obj) (G_TYPE_CHECK_INSTANCE_CAST ((obj), TYPE_MASK_ENTRY, MaskEntry))
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#define MASK_ENTRY_CLASS(vtable) (G_TYPE_CHECK_CLASS_CAST ((vtable), TYPE_MASK_ENTRY, MaskEntryClass))
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#define IS_MASK_ENTRY(obj) (G_TYPE_CHECK_INSTANCE_TYPE ((obj), TYPE_MASK_ENTRY))
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#define IS_MASK_ENTRY_CLASS(vtable) (G_TYPE_CHECK_CLASS_TYPE ((vtable), TYPE_MASK_ENTRY))
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#define MASK_ENTRY_GET_CLASS(inst) (G_TYPE_INSTANCE_GET_CLASS ((inst), TYPE_MASK_ENTRY, MaskEntryClass))
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typedef struct _MaskEntry MaskEntry;
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struct _MaskEntry
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{
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GtkEntry entry;
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gchar *mask;
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};
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typedef struct _MaskEntryClass MaskEntryClass;
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struct _MaskEntryClass
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{
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GtkEntryClass parent_class;
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};
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static void mask_entry_editable_init (GtkEditableInterface *iface);
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G_DEFINE_TYPE_WITH_CODE (MaskEntry, mask_entry, GTK_TYPE_ENTRY,
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G_IMPLEMENT_INTERFACE (GTK_TYPE_EDITABLE,
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mask_entry_editable_init));
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static void
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mask_entry_set_background (MaskEntry *entry)
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{
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if (entry->mask)
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{
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if (!g_regex_match_simple (entry->mask, gtk_entry_get_text (GTK_ENTRY (entry)), 0, 0))
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{
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PangoAttrList *attrs;
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attrs = pango_attr_list_new ();
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pango_attr_list_insert (attrs, pango_attr_foreground_new (65535, 32767, 32767));
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gtk_entry_set_attributes (GTK_ENTRY (entry), attrs);
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pango_attr_list_unref (attrs);
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return;
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}
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}
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gtk_entry_set_attributes (GTK_ENTRY (entry), NULL);
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}
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static void
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mask_entry_changed (GtkEditable *editable)
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{
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mask_entry_set_background (MASK_ENTRY (editable));
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}
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static void
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mask_entry_init (MaskEntry *entry)
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{
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entry->mask = NULL;
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}
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static void
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mask_entry_class_init (MaskEntryClass *klass)
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{ }
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static void
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mask_entry_editable_init (GtkEditableInterface *iface)
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{
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iface->changed = mask_entry_changed;
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}
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GtkWidget *
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do_combobox (GtkWidget *do_widget)
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{
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static GtkWidget *window = NULL;
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GtkWidget *vbox, *frame, *box, *combo, *entry;
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GtkTreeModel *model;
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GtkCellRenderer *renderer;
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GtkTreePath *path;
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GtkTreeIter iter;
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if (!window)
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{
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window = gtk_window_new (GTK_WINDOW_TOPLEVEL);
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gtk_window_set_screen (GTK_WINDOW (window),
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gtk_widget_get_screen (do_widget));
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gtk_window_set_title (GTK_WINDOW (window), "Combo Boxes");
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g_signal_connect (window, "destroy",
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G_CALLBACK (gtk_widget_destroyed), &window);
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vbox = gtk_box_new (GTK_ORIENTATION_VERTICAL, 2);
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gtk_container_add (GTK_CONTAINER (window), vbox);
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/* A combobox demonstrating cell renderers, separators and
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* insensitive rows
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*/
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frame = gtk_frame_new ("Items with icons");
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gtk_box_pack_start (GTK_BOX (vbox), frame, FALSE, FALSE);
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box = gtk_box_new (GTK_ORIENTATION_VERTICAL, 0);
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gtk_container_add (GTK_CONTAINER (frame), box);
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model = create_icon_store ();
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combo = gtk_combo_box_new_with_model (model);
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g_object_unref (model);
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gtk_container_add (GTK_CONTAINER (box), combo);
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renderer = gtk_cell_renderer_pixbuf_new ();
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gtk_cell_layout_pack_start (GTK_CELL_LAYOUT (combo), renderer, FALSE);
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gtk_cell_layout_set_attributes (GTK_CELL_LAYOUT (combo), renderer,
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"icon-name", ICON_NAME_COL,
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NULL);
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gtk_cell_layout_set_cell_data_func (GTK_CELL_LAYOUT (combo),
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renderer,
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set_sensitive,
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NULL, NULL);
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renderer = gtk_cell_renderer_text_new ();
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gtk_cell_layout_pack_start (GTK_CELL_LAYOUT (combo), renderer, TRUE);
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gtk_cell_layout_set_attributes (GTK_CELL_LAYOUT (combo), renderer,
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"text", TEXT_COL,
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NULL);
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gtk_cell_layout_set_cell_data_func (GTK_CELL_LAYOUT (combo),
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renderer,
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set_sensitive,
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NULL, NULL);
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gtk_combo_box_set_row_separator_func (GTK_COMBO_BOX (combo),
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is_separator, NULL, NULL);
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gtk_combo_box_set_active (GTK_COMBO_BOX (combo), 0);
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/* A combobox demonstrating trees.
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*/
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frame = gtk_frame_new ("Where are we ?");
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gtk_box_pack_start (GTK_BOX (vbox), frame, FALSE, FALSE);
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box = gtk_box_new (GTK_ORIENTATION_VERTICAL, 0);
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gtk_container_add (GTK_CONTAINER (frame), box);
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model = create_capital_store ();
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combo = gtk_combo_box_new_with_model (model);
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g_object_unref (model);
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gtk_container_add (GTK_CONTAINER (box), combo);
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renderer = gtk_cell_renderer_text_new ();
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gtk_cell_layout_pack_start (GTK_CELL_LAYOUT (combo), renderer, TRUE);
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gtk_cell_layout_set_attributes (GTK_CELL_LAYOUT (combo), renderer,
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"text", 0,
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NULL);
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gtk_cell_layout_set_cell_data_func (GTK_CELL_LAYOUT (combo),
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renderer,
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is_capital_sensitive,
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NULL, NULL);
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path = gtk_tree_path_new_from_indices (0, 8, -1);
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gtk_tree_model_get_iter (model, &iter, path);
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gtk_tree_path_free (path);
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gtk_combo_box_set_active_iter (GTK_COMBO_BOX (combo), &iter);
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/* A GtkComboBoxEntry with validation */
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frame = gtk_frame_new ("Editable");
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gtk_box_pack_start (GTK_BOX (vbox), frame, FALSE, FALSE);
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box = gtk_box_new (GTK_ORIENTATION_VERTICAL, 0);
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gtk_container_add (GTK_CONTAINER (frame), box);
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combo = gtk_combo_box_text_new_with_entry ();
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fill_combo_entry (combo);
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gtk_container_add (GTK_CONTAINER (box), combo);
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entry = g_object_new (TYPE_MASK_ENTRY, NULL);
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MASK_ENTRY (entry)->mask = "^([0-9]*|One|Two|2\302\275|Three)$";
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gtk_container_remove (GTK_CONTAINER (combo), gtk_bin_get_child (GTK_BIN (combo)));
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gtk_container_add (GTK_CONTAINER (combo), entry);
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/* A combobox with string IDs */
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frame = gtk_frame_new ("String IDs");
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gtk_box_pack_start (GTK_BOX (vbox), frame, FALSE, FALSE);
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box = gtk_box_new (GTK_ORIENTATION_VERTICAL, 0);
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gtk_container_add (GTK_CONTAINER (frame), box);
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combo = gtk_combo_box_text_new ();
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gtk_combo_box_text_append (GTK_COMBO_BOX_TEXT (combo), "never", "Not visible");
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gtk_combo_box_text_append (GTK_COMBO_BOX_TEXT (combo), "when-active", "Visible when active");
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gtk_combo_box_text_append (GTK_COMBO_BOX_TEXT (combo), "always", "Always visible");
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gtk_container_add (GTK_CONTAINER (box), combo);
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entry = gtk_entry_new ();
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g_object_bind_property (combo, "active-id",
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entry, "text",
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G_BINDING_BIDIRECTIONAL);
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gtk_container_add (GTK_CONTAINER (box), entry);
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}
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if (!gtk_widget_get_visible (window))
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gtk_widget_show_all (window);
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else
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gtk_widget_destroy (window);
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return window;
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}
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