forked from AuroraMiddleware/gtk
417 lines
12 KiB
C
417 lines
12 KiB
C
/* Tree View/Editable Cells
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*
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* This demo demonstrates the use of editable cells in a GtkTreeView. If
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* you're new to the GtkTreeView widgets and associates, look into
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* the GtkListStore example first. It also shows how to use the
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* GtkCellRenderer::editing-started signal to do custom setup of the
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* editable widget.
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*
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* The cell renderers used in this demo are GtkCellRendererText,
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* GtkCellRendererCombo and GtkCellRendererProgress.
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*/
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#include <gtk/gtk.h>
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#include <string.h>
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#include <stdlib.h>
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typedef struct
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{
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gint number;
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gchar *product;
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gint yummy;
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}
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Item;
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enum
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{
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COLUMN_ITEM_NUMBER,
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COLUMN_ITEM_PRODUCT,
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COLUMN_ITEM_YUMMY,
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NUM_ITEM_COLUMNS
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};
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enum
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{
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COLUMN_NUMBER_TEXT,
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NUM_NUMBER_COLUMNS
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};
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static GArray *articles = NULL;
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static void
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add_items (void)
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{
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Item foo;
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g_return_if_fail (articles != NULL);
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foo.number = 3;
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foo.product = g_strdup ("bottles of coke");
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foo.yummy = 20;
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g_array_append_vals (articles, &foo, 1);
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foo.number = 5;
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foo.product = g_strdup ("packages of noodles");
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foo.yummy = 50;
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g_array_append_vals (articles, &foo, 1);
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foo.number = 2;
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foo.product = g_strdup ("packages of chocolate chip cookies");
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foo.yummy = 90;
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g_array_append_vals (articles, &foo, 1);
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foo.number = 1;
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foo.product = g_strdup ("can vanilla ice cream");
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foo.yummy = 60;
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g_array_append_vals (articles, &foo, 1);
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foo.number = 6;
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foo.product = g_strdup ("eggs");
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foo.yummy = 10;
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g_array_append_vals (articles, &foo, 1);
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}
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static GtkTreeModel *
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create_items_model (void)
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{
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gint i = 0;
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GtkListStore *model;
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GtkTreeIter iter;
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/* create array */
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articles = g_array_sized_new (FALSE, FALSE, sizeof (Item), 1);
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add_items ();
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/* create list store */
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model = gtk_list_store_new (NUM_ITEM_COLUMNS, G_TYPE_INT, G_TYPE_STRING,
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G_TYPE_INT, G_TYPE_BOOLEAN);
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/* add items */
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for (i = 0; i < articles->len; i++)
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{
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gtk_list_store_append (model, &iter);
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gtk_list_store_set (model, &iter,
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COLUMN_ITEM_NUMBER,
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g_array_index (articles, Item, i).number,
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COLUMN_ITEM_PRODUCT,
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g_array_index (articles, Item, i).product,
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COLUMN_ITEM_YUMMY,
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g_array_index (articles, Item, i).yummy,
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-1);
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}
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return GTK_TREE_MODEL (model);
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}
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static GtkTreeModel *
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create_numbers_model (void)
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{
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#define N_NUMBERS 10
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gint i = 0;
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GtkListStore *model;
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GtkTreeIter iter;
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/* create list store */
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model = gtk_list_store_new (NUM_NUMBER_COLUMNS, G_TYPE_STRING, G_TYPE_INT);
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/* add numbers */
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for (i = 0; i < N_NUMBERS; i++)
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{
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char str[2];
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str[0] = '0' + i;
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str[1] = '\0';
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gtk_list_store_append (model, &iter);
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gtk_list_store_set (model, &iter,
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COLUMN_NUMBER_TEXT, str,
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-1);
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}
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return GTK_TREE_MODEL (model);
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#undef N_NUMBERS
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}
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static void
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add_item (GtkWidget *button, gpointer data)
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{
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Item foo;
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GtkTreeIter current, iter;
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GtkTreePath *path;
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GtkTreeModel *model;
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GtkTreeViewColumn *column;
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GtkTreeView *treeview = (GtkTreeView *)data;
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g_return_if_fail (articles != NULL);
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foo.number = 0;
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foo.product = g_strdup ("Description here");
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foo.yummy = 50;
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g_array_append_vals (articles, &foo, 1);
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/* Insert a new row below the current one */
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gtk_tree_view_get_cursor (treeview, &path, NULL);
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model = gtk_tree_view_get_model (treeview);
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if (path)
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{
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gtk_tree_model_get_iter (model, ¤t, path);
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gtk_tree_path_free (path);
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gtk_list_store_insert_after (GTK_LIST_STORE (model), &iter, ¤t);
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}
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else
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{
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gtk_list_store_insert (GTK_LIST_STORE (model), &iter, -1);
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}
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/* Set the data for the new row */
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gtk_list_store_set (GTK_LIST_STORE (model), &iter,
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COLUMN_ITEM_NUMBER, foo.number,
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COLUMN_ITEM_PRODUCT, foo.product,
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COLUMN_ITEM_YUMMY, foo.yummy,
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-1);
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/* Move focus to the new row */
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path = gtk_tree_model_get_path (model, &iter);
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column = gtk_tree_view_get_column (treeview, 0);
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gtk_tree_view_set_cursor (treeview, path, column, FALSE);
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gtk_tree_path_free (path);
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}
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static void
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remove_item (GtkWidget *widget, gpointer data)
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{
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GtkTreeIter iter;
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GtkTreeView *treeview = (GtkTreeView *)data;
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GtkTreeModel *model = gtk_tree_view_get_model (treeview);
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GtkTreeSelection *selection = gtk_tree_view_get_selection (treeview);
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if (gtk_tree_selection_get_selected (selection, NULL, &iter))
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{
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gint i;
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GtkTreePath *path;
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path = gtk_tree_model_get_path (model, &iter);
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i = gtk_tree_path_get_indices (path)[0];
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gtk_list_store_remove (GTK_LIST_STORE (model), &iter);
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g_array_remove_index (articles, i);
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gtk_tree_path_free (path);
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}
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}
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static gboolean
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separator_row (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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gint idx;
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path = gtk_tree_model_get_path (model, iter);
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idx = gtk_tree_path_get_indices (path)[0];
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gtk_tree_path_free (path);
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return idx == 5;
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}
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static void
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editing_started (GtkCellRenderer *cell,
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GtkCellEditable *editable,
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const gchar *path,
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gpointer data)
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{
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gtk_combo_box_set_row_separator_func (GTK_COMBO_BOX (editable),
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separator_row, NULL, NULL);
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}
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static void
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cell_edited (GtkCellRendererText *cell,
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const gchar *path_string,
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const gchar *new_text,
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gpointer data)
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{
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GtkTreeModel *model = (GtkTreeModel *)data;
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GtkTreePath *path = gtk_tree_path_new_from_string (path_string);
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GtkTreeIter iter;
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gint column = GPOINTER_TO_INT (g_object_get_data (G_OBJECT (cell), "column"));
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gtk_tree_model_get_iter (model, &iter, path);
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switch (column)
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{
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case COLUMN_ITEM_NUMBER:
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{
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gint i;
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i = gtk_tree_path_get_indices (path)[0];
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g_array_index (articles, Item, i).number = atoi (new_text);
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gtk_list_store_set (GTK_LIST_STORE (model), &iter, column,
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g_array_index (articles, Item, i).number, -1);
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}
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break;
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case COLUMN_ITEM_PRODUCT:
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{
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gint i;
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gchar *old_text;
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gtk_tree_model_get (model, &iter, column, &old_text, -1);
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g_free (old_text);
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i = gtk_tree_path_get_indices (path)[0];
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g_free (g_array_index (articles, Item, i).product);
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g_array_index (articles, Item, i).product = g_strdup (new_text);
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gtk_list_store_set (GTK_LIST_STORE (model), &iter, column,
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g_array_index (articles, Item, i).product, -1);
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}
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break;
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default:
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g_assert_not_reached ();
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}
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gtk_tree_path_free (path);
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}
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static void
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add_columns (GtkTreeView *treeview,
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GtkTreeModel *items_model,
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GtkTreeModel *numbers_model)
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{
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GtkCellRenderer *renderer;
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/* number column */
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renderer = gtk_cell_renderer_combo_new ();
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g_object_set (renderer,
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"model", numbers_model,
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"text-column", COLUMN_NUMBER_TEXT,
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"has-entry", FALSE,
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"editable", TRUE,
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NULL);
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g_signal_connect (renderer, "edited",
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G_CALLBACK (cell_edited), items_model);
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g_signal_connect (renderer, "editing-started",
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G_CALLBACK (editing_started), NULL);
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g_object_set_data (G_OBJECT (renderer), "column", GINT_TO_POINTER (COLUMN_ITEM_NUMBER));
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gtk_tree_view_insert_column_with_attributes (GTK_TREE_VIEW (treeview),
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-1, "Number", renderer,
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"text", COLUMN_ITEM_NUMBER,
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NULL);
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/* product column */
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renderer = gtk_cell_renderer_text_new ();
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g_object_set (renderer,
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"editable", TRUE,
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NULL);
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g_signal_connect (renderer, "edited",
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G_CALLBACK (cell_edited), items_model);
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g_object_set_data (G_OBJECT (renderer), "column", GINT_TO_POINTER (COLUMN_ITEM_PRODUCT));
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gtk_tree_view_insert_column_with_attributes (GTK_TREE_VIEW (treeview),
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-1, "Product", renderer,
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"text", COLUMN_ITEM_PRODUCT,
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NULL);
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/* yummy column */
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renderer = gtk_cell_renderer_progress_new ();
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g_object_set_data (G_OBJECT (renderer), "column", GINT_TO_POINTER (COLUMN_ITEM_YUMMY));
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gtk_tree_view_insert_column_with_attributes (GTK_TREE_VIEW (treeview),
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-1, "Yummy", renderer,
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"value", COLUMN_ITEM_YUMMY,
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NULL);
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}
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GtkWidget *
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do_editable_cells (GtkWidget *do_widget)
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{
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static GtkWidget *window = NULL;
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if (!window)
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{
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GtkWidget *vbox;
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GtkWidget *hbox;
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GtkWidget *sw;
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GtkWidget *treeview;
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GtkWidget *button;
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GtkTreeModel *items_model;
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GtkTreeModel *numbers_model;
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window = gtk_window_new ();
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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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gtk_window_set_title (GTK_WINDOW (window), "Editable Cells");
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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, 5);
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gtk_widget_set_margin_start (vbox, 5);
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gtk_widget_set_margin_end (vbox, 5);
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gtk_widget_set_margin_top (vbox, 5);
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gtk_widget_set_margin_bottom (vbox, 5);
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gtk_container_add (GTK_CONTAINER (window), vbox);
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gtk_container_add (GTK_CONTAINER (vbox),
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gtk_label_new ("Shopping list (you can edit the cells!)"));
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sw = gtk_scrolled_window_new (NULL, NULL);
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gtk_scrolled_window_set_has_frame (GTK_SCROLLED_WINDOW (sw), TRUE);
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gtk_scrolled_window_set_policy (GTK_SCROLLED_WINDOW (sw),
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GTK_POLICY_AUTOMATIC,
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GTK_POLICY_AUTOMATIC);
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gtk_container_add (GTK_CONTAINER (vbox), sw);
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/* create models */
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items_model = create_items_model ();
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numbers_model = create_numbers_model ();
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/* create tree view */
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treeview = gtk_tree_view_new_with_model (items_model);
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gtk_widget_set_vexpand (treeview, TRUE);
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gtk_tree_selection_set_mode (gtk_tree_view_get_selection (GTK_TREE_VIEW (treeview)),
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GTK_SELECTION_SINGLE);
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add_columns (GTK_TREE_VIEW (treeview), items_model, numbers_model);
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g_object_unref (numbers_model);
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g_object_unref (items_model);
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gtk_scrolled_window_set_child (GTK_SCROLLED_WINDOW (sw), treeview);
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/* some buttons */
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hbox = gtk_box_new (GTK_ORIENTATION_HORIZONTAL, 4);
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gtk_box_set_homogeneous (GTK_BOX (hbox), TRUE);
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gtk_container_add (GTK_CONTAINER (vbox), hbox);
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button = gtk_button_new_with_label ("Add item");
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g_signal_connect (button, "clicked",
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G_CALLBACK (add_item), treeview);
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gtk_container_add (GTK_CONTAINER (hbox), button);
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button = gtk_button_new_with_label ("Remove item");
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g_signal_connect (button, "clicked",
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G_CALLBACK (remove_item), treeview);
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gtk_container_add (GTK_CONTAINER (hbox), button);
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gtk_window_set_default_size (GTK_WINDOW (window), 320, 200);
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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_widget_destroy (window);
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return window;
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}
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