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gtk2/demos/gtk-demo/tree_store.c
Matthias Clasen 386b63b85d scrolledwindow: Don't take adjustments in new() 
In 99.9% of all cases, these are just NULL, NULL.
So just do away with these arguments, people can
use the setters for the rare cases where they want
the scrolled window to use a different adjustment.
2020-06-24 11:25:09 -04:00

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/* Tree View/Tree Store
*
* The GtkTreeStore is used to store data in tree form, to be
* used later on by a GtkTreeView to display it. This demo builds
* a simple GtkTreeStore and displays it. If you're new to the
* GtkTreeView widgets and associates, look into the GtkListStore
* example first.
*
*/
#include <gtk/gtk.h>
/* TreeItem structure */
typedef struct _TreeItem TreeItem;
struct _TreeItem
{
const gchar *label;
gboolean alex;
gboolean havoc;
gboolean tim;
gboolean owen;
gboolean dave;
gboolean world_holiday; /* shared by the European hackers */
TreeItem *children;
};
/* columns */
enum
{
HOLIDAY_NAME_COLUMN = 0,
ALEX_COLUMN,
HAVOC_COLUMN,
TIM_COLUMN,
OWEN_COLUMN,
DAVE_COLUMN,
VISIBLE_COLUMN,
WORLD_COLUMN,
NUM_COLUMNS
};
/* tree data */
static TreeItem january[] =
{
{"New Years Day", TRUE, TRUE, TRUE, TRUE, FALSE, TRUE, NULL },
{"Presidential Inauguration", FALSE, TRUE, FALSE, TRUE, FALSE, FALSE, NULL },
{"Martin Luther King Jr. day", FALSE, TRUE, FALSE, TRUE, FALSE, FALSE, NULL },
{ NULL }
};
static TreeItem february[] =
{
{ "Presidents' Day", FALSE, TRUE, FALSE, TRUE, FALSE, FALSE, NULL },
{ "Groundhog Day", FALSE, FALSE, FALSE, FALSE, FALSE, FALSE, NULL },
{ "Valentine's Day", FALSE, FALSE, FALSE, FALSE, TRUE, TRUE, NULL },
{ NULL }
};
static TreeItem march[] =
{
{ "National Tree Planting Day", FALSE, FALSE, FALSE, FALSE, FALSE, FALSE, NULL },
{ "St Patrick's Day", FALSE, FALSE, FALSE, FALSE, FALSE, TRUE, NULL },
{ NULL }
};
static TreeItem april[] =
{
{ "April Fools' Day", FALSE, FALSE, FALSE, FALSE, FALSE, TRUE, NULL },
{ "Army Day", FALSE, FALSE, FALSE, FALSE, FALSE, FALSE, NULL },
{ "Earth Day", FALSE, FALSE, FALSE, FALSE, FALSE, TRUE, NULL },
{ "Administrative Professionals' Day", FALSE, FALSE, FALSE, FALSE, FALSE, FALSE, NULL },
{ NULL }
};
static TreeItem may[] =
{
{ "Nurses' Day", FALSE, FALSE, FALSE, FALSE, FALSE, FALSE, NULL },
{ "National Day of Prayer", FALSE, FALSE, FALSE, FALSE, FALSE, FALSE, NULL },
{ "Mothers' Day", FALSE, FALSE, FALSE, FALSE, FALSE, TRUE, NULL },
{ "Armed Forces Day", FALSE, FALSE, FALSE, FALSE, FALSE, FALSE, NULL },
{ "Memorial Day", TRUE, TRUE, TRUE, TRUE, FALSE, TRUE, NULL },
{ NULL }
};
static TreeItem june[] =
{
{ "June Fathers' Day", FALSE, FALSE, FALSE, FALSE, FALSE, TRUE, NULL },
{ "Juneteenth (Liberation Day)", FALSE, FALSE, FALSE, FALSE, FALSE, FALSE, NULL },
{ "Flag Day", FALSE, TRUE, FALSE, TRUE, FALSE, FALSE, NULL },
{ NULL }
};
static TreeItem july[] =
{
{ "Parents' Day", FALSE, FALSE, FALSE, FALSE, FALSE, TRUE, NULL },
{ "Independence Day", FALSE, TRUE, FALSE, TRUE, FALSE, FALSE, NULL },
{ NULL }
};
static TreeItem august[] =
{
{ "Air Force Day", FALSE, FALSE, FALSE, FALSE, FALSE, FALSE, NULL },
{ "Coast Guard Day", FALSE, FALSE, FALSE, FALSE, FALSE, FALSE, NULL },
{ "Friendship Day", FALSE, FALSE, FALSE, FALSE, FALSE, FALSE, NULL },
{ NULL }
};
static TreeItem september[] =
{
{ "Grandparents' Day", FALSE, FALSE, FALSE, FALSE, FALSE, TRUE, NULL },
{ "Citizenship Day or Constitution Day", FALSE, FALSE, FALSE, FALSE, FALSE, FALSE, NULL },
{ "Labor Day", TRUE, TRUE, TRUE, TRUE, FALSE, TRUE, NULL },
{ NULL }
};
static TreeItem october[] =
{
{ "National Children's Day", FALSE, FALSE, FALSE, FALSE, FALSE, FALSE, NULL },
{ "Bosses' Day", FALSE, FALSE, FALSE, FALSE, FALSE, FALSE, NULL },
{ "Sweetest Day", FALSE, FALSE, FALSE, FALSE, FALSE, FALSE, NULL },
{ "Mother-in-Law's Day", FALSE, FALSE, FALSE, FALSE, FALSE, FALSE, NULL },
{ "Navy Day", FALSE, FALSE, FALSE, FALSE, FALSE, FALSE, NULL },
{ "Columbus Day", FALSE, TRUE, FALSE, TRUE, FALSE, FALSE, NULL },
{ "Halloween", FALSE, FALSE, FALSE, FALSE, FALSE, TRUE, NULL },
{ NULL }
};
static TreeItem november[] =
{
{ "Marine Corps Day", FALSE, FALSE, FALSE, FALSE, FALSE, FALSE, NULL },
{ "Veterans' Day", TRUE, TRUE, TRUE, TRUE, FALSE, TRUE, NULL },
{ "Thanksgiving", FALSE, TRUE, FALSE, TRUE, FALSE, FALSE, NULL },
{ NULL }
};
static TreeItem december[] =
{
{ "Pearl Harbor Remembrance Day", FALSE, FALSE, FALSE, FALSE, FALSE, FALSE, NULL },
{ "Christmas", TRUE, TRUE, TRUE, TRUE, FALSE, TRUE, NULL },
{ "Kwanzaa", FALSE, FALSE, FALSE, FALSE, FALSE, FALSE, NULL },
{ NULL }
};
static TreeItem toplevel[] =
{
{"January", FALSE, FALSE, FALSE, FALSE, FALSE, FALSE, january},
{"February", FALSE, FALSE, FALSE, FALSE, FALSE, FALSE, february},
{"March", FALSE, FALSE, FALSE, FALSE, FALSE, FALSE, march},
{"April", FALSE, FALSE, FALSE, FALSE, FALSE, FALSE, april},
{"May", FALSE, FALSE, FALSE, FALSE, FALSE, FALSE, may},
{"June", FALSE, FALSE, FALSE, FALSE, FALSE, FALSE, june},
{"July", FALSE, FALSE, FALSE, FALSE, FALSE, FALSE, july},
{"August", FALSE, FALSE, FALSE, FALSE, FALSE, FALSE, august},
{"September", FALSE, FALSE, FALSE, FALSE, FALSE, FALSE, september},
{"October", FALSE, FALSE, FALSE, FALSE, FALSE, FALSE, october},
{"November", FALSE, FALSE, FALSE, FALSE, FALSE, FALSE, november},
{"December", FALSE, FALSE, FALSE, FALSE, FALSE, FALSE, december},
{NULL}
};
static GtkTreeModel *
create_model (void)
{
GtkTreeStore *model;
GtkTreeIter iter;
TreeItem *month = toplevel;
/* create tree store */
model = gtk_tree_store_new (NUM_COLUMNS,
G_TYPE_STRING,
G_TYPE_BOOLEAN,
G_TYPE_BOOLEAN,
G_TYPE_BOOLEAN,
G_TYPE_BOOLEAN,
G_TYPE_BOOLEAN,
G_TYPE_BOOLEAN,
G_TYPE_BOOLEAN);
/* add data to the tree store */
while (month->label)
{
TreeItem *holiday = month->children;
gtk_tree_store_append (model, &iter, NULL);
gtk_tree_store_set (model, &iter,
HOLIDAY_NAME_COLUMN, month->label,
ALEX_COLUMN, FALSE,
HAVOC_COLUMN, FALSE,
TIM_COLUMN, FALSE,
OWEN_COLUMN, FALSE,
DAVE_COLUMN, FALSE,
VISIBLE_COLUMN, FALSE,
WORLD_COLUMN, FALSE,
-1);
/* add children */
while (holiday->label)
{
GtkTreeIter child_iter;
gtk_tree_store_append (model, &child_iter, &iter);
gtk_tree_store_set (model, &child_iter,
HOLIDAY_NAME_COLUMN, holiday->label,
ALEX_COLUMN, holiday->alex,
HAVOC_COLUMN, holiday->havoc,
TIM_COLUMN, holiday->tim,
OWEN_COLUMN, holiday->owen,
DAVE_COLUMN, holiday->dave,
VISIBLE_COLUMN, TRUE,
WORLD_COLUMN, holiday->world_holiday,
-1);
holiday++;
}
month++;
}
return GTK_TREE_MODEL (model);
}
static void
item_toggled (GtkCellRendererToggle *cell,
gchar *path_str,
gpointer data)
{
GtkTreeModel *model = (GtkTreeModel *)data;
GtkTreePath *path = gtk_tree_path_new_from_string (path_str);
GtkTreeIter iter;
gboolean toggle_item;
gint *column;
column = g_object_get_data (G_OBJECT (cell), "column");
/* get toggled iter */
gtk_tree_model_get_iter (model, &iter, path);
gtk_tree_model_get (model, &iter, column, &toggle_item, -1);
/* do something with the value */
toggle_item ^= 1;
/* set new value */
gtk_tree_store_set (GTK_TREE_STORE (model), &iter, column,
toggle_item, -1);
/* clean up */
gtk_tree_path_free (path);
}
static void
add_columns (GtkTreeView *treeview)
{
gint col_offset;
GtkCellRenderer *renderer;
GtkTreeViewColumn *column;
GtkTreeModel *model = gtk_tree_view_get_model (treeview);
/* column for holiday names */
renderer = gtk_cell_renderer_text_new ();
g_object_set (renderer, "xalign", 0.0, NULL);
col_offset = gtk_tree_view_insert_column_with_attributes (GTK_TREE_VIEW (treeview),
-1, "Holiday",
renderer, "text",
HOLIDAY_NAME_COLUMN,
NULL);
column = gtk_tree_view_get_column (GTK_TREE_VIEW (treeview), col_offset - 1);
gtk_tree_view_column_set_clickable (GTK_TREE_VIEW_COLUMN (column), TRUE);
/* alex column */
renderer = gtk_cell_renderer_toggle_new ();
g_object_set (renderer, "xalign", 0.0, NULL);
g_object_set_data (G_OBJECT (renderer), "column", (gint *)ALEX_COLUMN);
g_signal_connect (renderer, "toggled", G_CALLBACK (item_toggled), model);
col_offset = gtk_tree_view_insert_column_with_attributes (GTK_TREE_VIEW (treeview),
-1, "Alex",
renderer,
"active",
ALEX_COLUMN,
"visible",
VISIBLE_COLUMN,
"activatable",
WORLD_COLUMN, NULL);
column = gtk_tree_view_get_column (GTK_TREE_VIEW (treeview), col_offset - 1);
gtk_tree_view_column_set_sizing (GTK_TREE_VIEW_COLUMN (column),
GTK_TREE_VIEW_COLUMN_FIXED);
gtk_tree_view_column_set_clickable (GTK_TREE_VIEW_COLUMN (column), TRUE);
/* havoc column */
renderer = gtk_cell_renderer_toggle_new ();
g_object_set (renderer, "xalign", 0.0, NULL);
g_object_set_data (G_OBJECT (renderer), "column", (gint *)HAVOC_COLUMN);
g_signal_connect (renderer, "toggled", G_CALLBACK (item_toggled), model);
col_offset = gtk_tree_view_insert_column_with_attributes (GTK_TREE_VIEW (treeview),
-1, "Havoc",
renderer,
"active",
HAVOC_COLUMN,
"visible",
VISIBLE_COLUMN,
NULL);
column = gtk_tree_view_get_column (GTK_TREE_VIEW (treeview), col_offset - 1);
gtk_tree_view_column_set_sizing (GTK_TREE_VIEW_COLUMN (column),
GTK_TREE_VIEW_COLUMN_FIXED);
gtk_tree_view_column_set_clickable (GTK_TREE_VIEW_COLUMN (column), TRUE);
/* tim column */
renderer = gtk_cell_renderer_toggle_new ();
g_object_set (renderer, "xalign", 0.0, NULL);
g_object_set_data (G_OBJECT (renderer), "column", (gint *)TIM_COLUMN);
g_signal_connect (renderer, "toggled", G_CALLBACK (item_toggled), model);
col_offset = gtk_tree_view_insert_column_with_attributes (GTK_TREE_VIEW (treeview),
-1, "Tim",
renderer,
"active",
TIM_COLUMN,
"visible",
VISIBLE_COLUMN,
"activatable",
WORLD_COLUMN, NULL);
column = gtk_tree_view_get_column (GTK_TREE_VIEW (treeview), col_offset - 1);
gtk_tree_view_column_set_sizing (GTK_TREE_VIEW_COLUMN (column),
GTK_TREE_VIEW_COLUMN_FIXED);
gtk_tree_view_column_set_clickable (GTK_TREE_VIEW_COLUMN (column), TRUE);
/* owen column */
renderer = gtk_cell_renderer_toggle_new ();
g_object_set (renderer, "xalign", 0.0, NULL);
g_object_set_data (G_OBJECT (renderer), "column", (gint *)OWEN_COLUMN);
g_signal_connect (renderer, "toggled", G_CALLBACK (item_toggled), model);
col_offset = gtk_tree_view_insert_column_with_attributes (GTK_TREE_VIEW (treeview),
-1, "Owen",
renderer,
"active",
OWEN_COLUMN,
"visible",
VISIBLE_COLUMN,
NULL);
column = gtk_tree_view_get_column (GTK_TREE_VIEW (treeview), col_offset - 1);
gtk_tree_view_column_set_sizing (GTK_TREE_VIEW_COLUMN (column),
GTK_TREE_VIEW_COLUMN_FIXED);
gtk_tree_view_column_set_clickable (GTK_TREE_VIEW_COLUMN (column), TRUE);
/* dave column */
renderer = gtk_cell_renderer_toggle_new ();
g_object_set (renderer, "xalign", 0.0, NULL);
g_object_set_data (G_OBJECT (renderer), "column", (gint *)DAVE_COLUMN);
g_signal_connect (renderer, "toggled", G_CALLBACK (item_toggled), model);
col_offset = gtk_tree_view_insert_column_with_attributes (GTK_TREE_VIEW (treeview),
-1, "Dave",
renderer,
"active",
DAVE_COLUMN,
"visible",
VISIBLE_COLUMN,
NULL);
column = gtk_tree_view_get_column (GTK_TREE_VIEW (treeview), col_offset - 1);
gtk_tree_view_column_set_sizing (GTK_TREE_VIEW_COLUMN (column),
GTK_TREE_VIEW_COLUMN_FIXED);
gtk_tree_view_column_set_clickable (GTK_TREE_VIEW_COLUMN (column), TRUE);
}
GtkWidget *
do_tree_store (GtkWidget *do_widget)
{
static GtkWidget *window = NULL;
if (!window)
{
GtkWidget *vbox;
GtkWidget *sw;
GtkWidget *treeview;
GtkTreeModel *model;
/* create window, etc */
window = gtk_window_new ();
gtk_window_set_display (GTK_WINDOW (window),
gtk_widget_get_display (do_widget));
gtk_window_set_title (GTK_WINDOW (window), "Tree Store");
g_object_add_weak_pointer (G_OBJECT (window), (gpointer *)&window);
vbox = gtk_box_new (GTK_ORIENTATION_VERTICAL, 8);
gtk_widget_set_margin_start (vbox, 8);
gtk_widget_set_margin_end (vbox, 8);
gtk_widget_set_margin_top (vbox, 8);
gtk_widget_set_margin_bottom (vbox, 8);
gtk_window_set_child (GTK_WINDOW (window), vbox);
gtk_box_append (GTK_BOX (vbox),
gtk_label_new ("Jonathan's Holiday Card Planning Sheet"));
sw = gtk_scrolled_window_new ();
gtk_scrolled_window_set_has_frame (GTK_SCROLLED_WINDOW (sw), TRUE);
gtk_scrolled_window_set_policy (GTK_SCROLLED_WINDOW (sw),
GTK_POLICY_AUTOMATIC,
GTK_POLICY_AUTOMATIC);
gtk_box_append (GTK_BOX (vbox), sw);
/* create model */
model = create_model ();
/* create tree view */
treeview = gtk_tree_view_new_with_model (model);
gtk_widget_set_vexpand (treeview, TRUE);
g_object_unref (model);
gtk_tree_selection_set_mode (gtk_tree_view_get_selection (GTK_TREE_VIEW (treeview)),
GTK_SELECTION_MULTIPLE);
add_columns (GTK_TREE_VIEW (treeview));
gtk_scrolled_window_set_child (GTK_SCROLLED_WINDOW (sw), treeview);
/* expand all rows after the treeview widget has been realized */
g_signal_connect (treeview, "realize",
G_CALLBACK (gtk_tree_view_expand_all), NULL);
gtk_window_set_default_size (GTK_WINDOW (window), 650, 400);
}
if (!gtk_widget_get_visible (window))
gtk_widget_show (window);
else
gtk_window_destroy (GTK_WINDOW (window));
return window;
}
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