Viewing file:  editable_cells.c (10.95 KB) -rw-r--r--
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/* Tree View/Editable Cells
*
* This demo demonstrates the use of editable cells in a GtkTreeView. If
* you're new to the GtkTreeView widgets and associates, look into
* the GtkListStore example first. It also shows how to use the
* GtkCellRenderer::editing-started signal to do custom setup of the
* editable widget.
*
* The cell renderers used in this demo are GtkCellRendererText,
* GtkCellRendererCombo and GtkCellRendererProgress.
*/
#include <gtk/gtk.h>
#include <string.h>
#include <stdlib.h>
static GtkWidget *window = NULL;
typedef struct
{
gint number;
gchar *product;
gint yummy;
}
Item;
enum
{
COLUMN_ITEM_NUMBER,
COLUMN_ITEM_PRODUCT,
COLUMN_ITEM_YUMMY,
NUM_ITEM_COLUMNS
};
enum
{
COLUMN_NUMBER_TEXT,
NUM_NUMBER_COLUMNS
};
static GArray *articles = NULL;
static void
add_items (void)
{
Item foo;
g_return_if_fail (articles != NULL);
foo.number = 3;
foo.product = g_strdup ("bottles of coke");
foo.yummy = 20;
g_array_append_vals (articles, &foo, 1);
foo.number = 5;
foo.product = g_strdup ("packages of noodles");
foo.yummy = 50;
g_array_append_vals (articles, &foo, 1);
foo.number = 2;
foo.product = g_strdup ("packages of chocolate chip cookies");
foo.yummy = 90;
g_array_append_vals (articles, &foo, 1);
foo.number = 1;
foo.product = g_strdup ("can vanilla ice cream");
foo.yummy = 60;
g_array_append_vals (articles, &foo, 1);
foo.number = 6;
foo.product = g_strdup ("eggs");
foo.yummy = 10;
g_array_append_vals (articles, &foo, 1);
}
static GtkTreeModel *
create_items_model (void)
{
gint i = 0;
GtkListStore *model;
GtkTreeIter iter;
/* create array */
articles = g_array_sized_new (FALSE, FALSE, sizeof (Item), 1);
add_items ();
/* create list store */
model = gtk_list_store_new (NUM_ITEM_COLUMNS, G_TYPE_INT, G_TYPE_STRING,
G_TYPE_INT, G_TYPE_BOOLEAN);
/* add items */
for (i = 0; i < articles->len; i++)
{
gtk_list_store_append (model, &iter);
gtk_list_store_set (model, &iter,
COLUMN_ITEM_NUMBER,
g_array_index (articles, Item, i).number,
COLUMN_ITEM_PRODUCT,
g_array_index (articles, Item, i).product,
COLUMN_ITEM_YUMMY,
g_array_index (articles, Item, i).yummy,
-1);
}
return GTK_TREE_MODEL (model);
}
static GtkTreeModel *
create_numbers_model (void)
{
#define N_NUMBERS 10
gint i = 0;
GtkListStore *model;
GtkTreeIter iter;
/* create list store */
model = gtk_list_store_new (NUM_NUMBER_COLUMNS, G_TYPE_STRING, G_TYPE_INT);
/* add numbers */
for (i = 0; i < N_NUMBERS; i++)
{
char str[2];
str[0] = '0' + i;
str[1] = '\0';
gtk_list_store_append (model, &iter);
gtk_list_store_set (model, &iter,
COLUMN_NUMBER_TEXT, str,
-1);
}
return GTK_TREE_MODEL (model);
#undef N_NUMBERS
}
static void
add_item (GtkWidget *button, gpointer data)
{
Item foo;
GtkTreeIter iter;
GtkTreeModel *model = (GtkTreeModel *)data;
g_return_if_fail (articles != NULL);
foo.number = 0;
foo.product = g_strdup ("Description here");
foo.yummy = 50;
g_array_append_vals (articles, &foo, 1);
gtk_list_store_append (GTK_LIST_STORE (model), &iter);
gtk_list_store_set (GTK_LIST_STORE (model), &iter,
COLUMN_ITEM_NUMBER, foo.number,
COLUMN_ITEM_PRODUCT, foo.product,
COLUMN_ITEM_YUMMY, foo.yummy,
-1);
}
static void
remove_item (GtkWidget *widget, gpointer data)
{
GtkTreeIter iter;
GtkTreeView *treeview = (GtkTreeView *)data;
GtkTreeModel *model = gtk_tree_view_get_model (treeview);
GtkTreeSelection *selection = gtk_tree_view_get_selection (treeview);
if (gtk_tree_selection_get_selected (selection, NULL, &iter))
{
gint i;
GtkTreePath *path;
path = gtk_tree_model_get_path (model, &iter);
i = gtk_tree_path_get_indices (path)[0];
gtk_list_store_remove (GTK_LIST_STORE (model), &iter);
g_array_remove_index (articles, i);
gtk_tree_path_free (path);
}
}
static gboolean
separator_row (GtkTreeModel *model,
GtkTreeIter *iter,
gpointer data)
{
GtkTreePath *path;
gint idx;
path = gtk_tree_model_get_path (model, iter);
idx = gtk_tree_path_get_indices (path)[0];
gtk_tree_path_free (path);
return idx == 5;
}
static void
editing_started (GtkCellRenderer *cell,
GtkCellEditable *editable,
const gchar *path,
gpointer data)
{
gtk_combo_box_set_row_separator_func (GTK_COMBO_BOX (editable),
separator_row, NULL, NULL);
}
static void
cell_edited (GtkCellRendererText *cell,
const gchar *path_string,
const gchar *new_text,
gpointer data)
{
GtkTreeModel *model = (GtkTreeModel *)data;
GtkTreePath *path = gtk_tree_path_new_from_string (path_string);
GtkTreeIter iter;
gint column = GPOINTER_TO_INT (g_object_get_data (G_OBJECT (cell), "column"));
gtk_tree_model_get_iter (model, &iter, path);
switch (column)
{
case COLUMN_ITEM_NUMBER:
{
gint i;
i = gtk_tree_path_get_indices (path)[0];
g_array_index (articles, Item, i).number = atoi (new_text);
gtk_list_store_set (GTK_LIST_STORE (model), &iter, column,
g_array_index (articles, Item, i).number, -1);
}
break;
case COLUMN_ITEM_PRODUCT:
{
gint i;
gchar *old_text;
gtk_tree_model_get (model, &iter, column, &old_text, -1);
g_free (old_text);
i = gtk_tree_path_get_indices (path)[0];
g_free (g_array_index (articles, Item, i).product);
g_array_index (articles, Item, i).product = g_strdup (new_text);
gtk_list_store_set (GTK_LIST_STORE (model), &iter, column,
g_array_index (articles, Item, i).product, -1);
}
break;
}
gtk_tree_path_free (path);
}
static void
add_columns (GtkTreeView *treeview,
GtkTreeModel *items_model,
GtkTreeModel *numbers_model)
{
GtkCellRenderer *renderer;
/* number column */
renderer = gtk_cell_renderer_combo_new ();
g_object_set (renderer,
"model", numbers_model,
"text-column", COLUMN_NUMBER_TEXT,
"has-entry", FALSE,
"editable", TRUE,
NULL);
g_signal_connect (renderer, "edited",
G_CALLBACK (cell_edited), items_model);
g_signal_connect (renderer, "editing-started",
G_CALLBACK (editing_started), NULL);
g_object_set_data (G_OBJECT (renderer), "column", GINT_TO_POINTER (COLUMN_ITEM_NUMBER));
gtk_tree_view_insert_column_with_attributes (GTK_TREE_VIEW (treeview),
-1, "Number", renderer,
"text", COLUMN_ITEM_NUMBER,
NULL);
/* product column */
renderer = gtk_cell_renderer_text_new ();
g_object_set (renderer,
"editable", TRUE,
NULL);
g_signal_connect (renderer, "edited",
G_CALLBACK (cell_edited), items_model);
g_object_set_data (G_OBJECT (renderer), "column", GINT_TO_POINTER (COLUMN_ITEM_PRODUCT));
gtk_tree_view_insert_column_with_attributes (GTK_TREE_VIEW (treeview),
-1, "Product", renderer,
"text", COLUMN_ITEM_PRODUCT,
NULL);
/* yummy column */
renderer = gtk_cell_renderer_progress_new ();
g_object_set_data (G_OBJECT (renderer), "column", GINT_TO_POINTER (COLUMN_ITEM_YUMMY));
gtk_tree_view_insert_column_with_attributes (GTK_TREE_VIEW (treeview),
-1, "Yummy", renderer,
"value", COLUMN_ITEM_YUMMY,
NULL);
}
GtkWidget *
do_editable_cells (GtkWidget *do_widget)
{
if (!window)
{
GtkWidget *vbox;
GtkWidget *hbox;
GtkWidget *sw;
GtkWidget *treeview;
GtkWidget *button;
GtkTreeModel *items_model;
GtkTreeModel *numbers_model;
/* create window, etc */
window = gtk_window_new (GTK_WINDOW_TOPLEVEL);
gtk_window_set_screen (GTK_WINDOW (window),
gtk_widget_get_screen (do_widget));
gtk_window_set_title (GTK_WINDOW (window), "Shopping list");
gtk_container_set_border_width (GTK_CONTAINER (window), 5);
g_signal_connect (window, "destroy",
G_CALLBACK (gtk_widget_destroyed), &window);
vbox = gtk_vbox_new (FALSE, 5);
gtk_container_add (GTK_CONTAINER (window), vbox);
gtk_box_pack_start (GTK_BOX (vbox),
gtk_label_new ("Shopping list (you can edit the cells!)"),
FALSE, FALSE, 0);
sw = gtk_scrolled_window_new (NULL, NULL);
gtk_scrolled_window_set_shadow_type (GTK_SCROLLED_WINDOW (sw),
GTK_SHADOW_ETCHED_IN);
gtk_scrolled_window_set_policy (GTK_SCROLLED_WINDOW (sw),
GTK_POLICY_AUTOMATIC,
GTK_POLICY_AUTOMATIC);
gtk_box_pack_start (GTK_BOX (vbox), sw, TRUE, TRUE, 0);
/* create models */
items_model = create_items_model ();
numbers_model = create_numbers_model ();
/* create tree view */
treeview = gtk_tree_view_new_with_model (items_model);
gtk_tree_view_set_rules_hint (GTK_TREE_VIEW (treeview), TRUE);
gtk_tree_selection_set_mode (gtk_tree_view_get_selection (GTK_TREE_VIEW (treeview)),
GTK_SELECTION_SINGLE);
add_columns (GTK_TREE_VIEW (treeview), items_model, numbers_model);
g_object_unref (numbers_model);
g_object_unref (items_model);
gtk_container_add (GTK_CONTAINER (sw), treeview);
/* some buttons */
hbox = gtk_hbox_new (TRUE, 4);
gtk_box_pack_start (GTK_BOX (vbox), hbox, FALSE, FALSE, 0);
button = gtk_button_new_with_label ("Add item");
g_signal_connect (button, "clicked",
G_CALLBACK (add_item), items_model);
gtk_box_pack_start (GTK_BOX (hbox), button, TRUE, TRUE, 0);
button = gtk_button_new_with_label ("Remove item");
g_signal_connect (button, "clicked",
G_CALLBACK (remove_item), treeview);
gtk_box_pack_start (GTK_BOX (hbox), button, TRUE, TRUE, 0);
gtk_window_set_default_size (GTK_WINDOW (window), 320, 200);
}
if (!GTK_WIDGET_VISIBLE (window))
gtk_widget_show_all (window);
else
{
gtk_widget_destroy (window);
window = NULL;
}
return window;
}
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