gtk2/demos/gtk-demo/listbox.c
2019-01-23 19:30:46 -05:00

399 lines
12 KiB
C

/* List Box
*
* GtkListBox allows lists with complicated layouts, using
* regular widgets supporting sorting and filtering.
*
*/
#include <gtk/gtk.h>
#include <stdlib.h>
#include <string.h>
static GdkPixbuf *avatar_pixbuf_other;
static GtkWidget *window = NULL;
#define GTK_TYPE_MESSAGE (gtk_message_get_type ())
#define GTK_MESSAGE(message) (G_TYPE_CHECK_INSTANCE_CAST ((message), GTK_TYPE_MESSAGE, GtkMessage))
#define GTK_MESSAGE_CLASS(klass) (G_TYPE_CHECK_CLASS_CAST ((klass), GTK_TYPE_MESSAGE, GtkMessageClass))
#define GTK_IS_MESSAGE(message) (G_TYPE_CHECK_INSTANCE_TYPE ((message), GTK_TYPE_MESSAGE))
#define GTK_IS_MESSAGE_CLASS(klass) (G_TYPE_CHECK_CLASS_TYPE ((klass), GTK_TYPE_MESSAGE))
#define GTK_MESSAGE_GET_CLASS(obj) (G_TYPE_INSTANCE_GET_CLASS ((obj), GTK_TYPE_MESSAGE, GtkMessageClass))
#define GTK_TYPE_MESSAGE_ROW (gtk_message_row_get_type ())
#define GTK_MESSAGE_ROW(message_row) (G_TYPE_CHECK_INSTANCE_CAST ((message_row), GTK_TYPE_MESSAGE_ROW, GtkMessageRow))
#define GTK_MESSAGE_ROW_CLASS(klass) (G_TYPE_CHECK_CLASS_CAST ((klass), GTK_TYPE_MESSAGE_ROW, GtkMessageRowClass))
#define GTK_IS_MESSAGE_ROW(message_row) (G_TYPE_CHECK_INSTANCE_TYPE ((message_row), GTK_TYPE_MESSAGE_ROW))
#define GTK_IS_MESSAGE_ROW_CLASS(klass) (G_TYPE_CHECK_CLASS_TYPE ((klass), GTK_TYPE_MESSAGE_ROW))
#define GTK_MESSAGE_ROW_GET_CLASS(obj) (G_TYPE_INSTANCE_GET_CLASS ((obj), GTK_TYPE_MESSAGE_ROW, GtkMessageRowClass))
typedef struct _GtkMessage GtkMessage;
typedef struct _GtkMessageClass GtkMessageClass;
typedef struct _GtkMessageRow GtkMessageRow;
typedef struct _GtkMessageRowClass GtkMessageRowClass;
typedef struct _GtkMessageRowPrivate GtkMessageRowPrivate;
struct _GtkMessage
{
GObject parent;
guint id;
char *sender_name;
char *sender_nick;
char *message;
gint64 time;
guint reply_to;
char *resent_by;
int n_favorites;
int n_reshares;
};
struct _GtkMessageClass
{
GObjectClass parent_class;
};
struct _GtkMessageRow
{
GtkListBoxRow parent;
GtkMessageRowPrivate *priv;
};
struct _GtkMessageRowClass
{
GtkListBoxRowClass parent_class;
};
struct _GtkMessageRowPrivate
{
GtkMessage *message;
GtkRevealer *details_revealer;
GtkImage *avatar_image;
GtkWidget *extra_buttons_box;
GtkLabel *content_label;
GtkLabel *source_name;
GtkLabel *source_nick;
GtkLabel *short_time_label;
GtkLabel *detailed_time_label;
GtkBox *resent_box;
GtkLinkButton *resent_by_button;
GtkLabel *n_favorites_label;
GtkLabel *n_reshares_label;
GtkButton *expand_button;
};
GType gtk_message_get_type (void) G_GNUC_CONST;
GType gtk_message_row_get_type (void) G_GNUC_CONST;
G_DEFINE_TYPE (GtkMessage, gtk_message, G_TYPE_OBJECT);
static void
gtk_message_finalize (GObject *obj)
{
GtkMessage *msg = GTK_MESSAGE (obj);
g_free (msg->sender_name);
g_free (msg->sender_nick);
g_free (msg->message);
g_free (msg->resent_by);
G_OBJECT_CLASS (gtk_message_parent_class)->finalize (obj);
}
static void
gtk_message_class_init (GtkMessageClass *klass)
{
GObjectClass *object_class = G_OBJECT_CLASS (klass);
object_class->finalize = gtk_message_finalize;
}
static void
gtk_message_init (GtkMessage *msg)
{
}
static void
gtk_message_parse (GtkMessage *msg, const char *str)
{
char **strv;
int i;
strv = g_strsplit (str, "|", 0);
i = 0;
msg->id = strtol (strv[i++], NULL, 10);
msg->sender_name = g_strdup (strv[i++]);
msg->sender_nick = g_strdup (strv[i++]);
msg->message = g_strdup (strv[i++]);
msg->time = strtol (strv[i++], NULL, 10);
if (strv[i])
{
msg->reply_to = strtol (strv[i++], NULL, 10);
if (strv[i])
{
if (*strv[i])
msg->resent_by = g_strdup (strv[i]);
i++;
if (strv[i])
{
msg->n_favorites = strtol (strv[i++], NULL, 10);
if (strv[i])
{
msg->n_reshares = strtol (strv[i++], NULL, 10);
}
}
}
}
g_strfreev (strv);
}
static GtkMessage *
gtk_message_new (const char *str)
{
GtkMessage *msg;
msg = g_object_new (gtk_message_get_type (), NULL);
gtk_message_parse (msg, str);
return msg;
}
G_DEFINE_TYPE_WITH_PRIVATE (GtkMessageRow, gtk_message_row, GTK_TYPE_LIST_BOX_ROW);
static void
gtk_message_row_update (GtkMessageRow *row)
{
GtkMessageRowPrivate *priv = row->priv;
GDateTime *t;
char *s;
gtk_label_set_text (priv->source_name, priv->message->sender_name);
gtk_label_set_text (priv->source_nick, priv->message->sender_nick);
gtk_label_set_text (priv->content_label, priv->message->message);
t = g_date_time_new_from_unix_utc (priv->message->time);
s = g_date_time_format (t, "%e %b %y");
gtk_label_set_text (priv->short_time_label, s);
g_free (s);
s = g_date_time_format (t, "%X - %e %b %Y");
gtk_label_set_text (priv->detailed_time_label, s);
g_free (s);
g_date_time_unref (t);
gtk_widget_set_visible (GTK_WIDGET(priv->n_favorites_label),
priv->message->n_favorites != 0);
s = g_strdup_printf ("<b>%d</b>\nFavorites", priv->message->n_favorites);
gtk_label_set_markup (priv->n_favorites_label, s);
g_free (s);
gtk_widget_set_visible (GTK_WIDGET(priv->n_reshares_label),
priv->message->n_reshares != 0);
s = g_strdup_printf ("<b>%d</b>\nReshares", priv->message->n_reshares);
gtk_label_set_markup (priv->n_reshares_label, s);
g_free (s);
gtk_widget_set_visible (GTK_WIDGET (priv->resent_box), priv->message->resent_by != NULL);
if (priv->message->resent_by)
gtk_button_set_label (GTK_BUTTON (priv->resent_by_button), priv->message->resent_by);
if (strcmp (priv->message->sender_nick, "@GTKtoolkit") == 0)
{
gtk_image_set_from_icon_name (priv->avatar_image, "gtk3-demo");
gtk_image_set_icon_size (priv->avatar_image, GTK_ICON_SIZE_LARGE);
}
else
gtk_image_set_from_pixbuf (priv->avatar_image, avatar_pixbuf_other);
}
static void
gtk_message_row_expand (GtkMessageRow *row)
{
GtkMessageRowPrivate *priv = row->priv;
gboolean expand;
expand = !gtk_revealer_get_reveal_child (priv->details_revealer);
gtk_revealer_set_reveal_child (priv->details_revealer, expand);
if (expand)
gtk_button_set_label (priv->expand_button, "Hide");
else
gtk_button_set_label (priv->expand_button, "Expand");
}
static void
expand_clicked (GtkMessageRow *row,
GtkButton *button)
{
gtk_message_row_expand (row);
}
static void
reshare_clicked (GtkMessageRow *row,
GtkButton *button)
{
GtkMessageRowPrivate *priv = row->priv;
priv->message->n_reshares++;
gtk_message_row_update (row);
}
static void
favorite_clicked (GtkMessageRow *row,
GtkButton *button)
{
GtkMessageRowPrivate *priv = row->priv;
priv->message->n_favorites++;
gtk_message_row_update (row);
}
static void
gtk_message_row_state_flags_changed (GtkWidget *widget,
GtkStateFlags previous_state_flags)
{
GtkMessageRowPrivate *priv = GTK_MESSAGE_ROW (widget)->priv;
GtkStateFlags flags;
flags = gtk_widget_get_state_flags (widget);
gtk_widget_set_visible (priv->extra_buttons_box,
flags & (GTK_STATE_FLAG_PRELIGHT | GTK_STATE_FLAG_SELECTED));
GTK_WIDGET_CLASS (gtk_message_row_parent_class)->state_flags_changed (widget, previous_state_flags);
}
static void
gtk_message_row_finalize (GObject *obj)
{
GtkMessageRowPrivate *priv = GTK_MESSAGE_ROW (obj)->priv;
g_object_unref (priv->message);
G_OBJECT_CLASS (gtk_message_row_parent_class)->finalize(obj);
}
static void
gtk_message_row_class_init (GtkMessageRowClass *klass)
{
GtkWidgetClass *widget_class = GTK_WIDGET_CLASS (klass);
GObjectClass *object_class = G_OBJECT_CLASS (klass);
object_class->finalize = gtk_message_row_finalize;
gtk_widget_class_set_template_from_resource (widget_class, "/listbox/listbox.ui");
gtk_widget_class_bind_template_child_private (widget_class, GtkMessageRow, content_label);
gtk_widget_class_bind_template_child_private (widget_class, GtkMessageRow, source_name);
gtk_widget_class_bind_template_child_private (widget_class, GtkMessageRow, source_nick);
gtk_widget_class_bind_template_child_private (widget_class, GtkMessageRow, short_time_label);
gtk_widget_class_bind_template_child_private (widget_class, GtkMessageRow, detailed_time_label);
gtk_widget_class_bind_template_child_private (widget_class, GtkMessageRow, extra_buttons_box);
gtk_widget_class_bind_template_child_private (widget_class, GtkMessageRow, details_revealer);
gtk_widget_class_bind_template_child_private (widget_class, GtkMessageRow, avatar_image);
gtk_widget_class_bind_template_child_private (widget_class, GtkMessageRow, resent_box);
gtk_widget_class_bind_template_child_private (widget_class, GtkMessageRow, resent_by_button);
gtk_widget_class_bind_template_child_private (widget_class, GtkMessageRow, n_reshares_label);
gtk_widget_class_bind_template_child_private (widget_class, GtkMessageRow, n_favorites_label);
gtk_widget_class_bind_template_child_private (widget_class, GtkMessageRow, expand_button);
gtk_widget_class_bind_template_callback (widget_class, expand_clicked);
gtk_widget_class_bind_template_callback (widget_class, reshare_clicked);
gtk_widget_class_bind_template_callback (widget_class, favorite_clicked);
widget_class->state_flags_changed = gtk_message_row_state_flags_changed;
}
static void
gtk_message_row_init (GtkMessageRow *row)
{
row->priv = gtk_message_row_get_instance_private (row);
gtk_widget_init_template (GTK_WIDGET (row));
}
static GtkMessageRow *
gtk_message_row_new (GtkMessage *message)
{
GtkMessageRow *row;
row = g_object_new (gtk_message_row_get_type (), NULL);
row->priv->message = message;
gtk_message_row_update (row);
return row;
}
static int
gtk_message_row_sort (GtkMessageRow *a, GtkMessageRow *b, gpointer data)
{
return b->priv->message->time - a->priv->message->time;
}
static void
row_activated (GtkListBox *listbox, GtkListBoxRow *row)
{
gtk_message_row_expand (GTK_MESSAGE_ROW (row));
}
GtkWidget *
do_listbox (GtkWidget *do_widget)
{
GtkWidget *scrolled, *listbox, *vbox, *label;
GtkMessage *message;
GtkMessageRow *row;
GBytes *data;
char **lines;
int i;
if (!window)
{
avatar_pixbuf_other = gdk_pixbuf_new_from_resource_at_scale ("/listbox/apple-red.png", 32, 32, FALSE, NULL);
window = gtk_window_new (GTK_WINDOW_TOPLEVEL);
gtk_window_set_display (GTK_WINDOW (window),
gtk_widget_get_display (do_widget));
gtk_window_set_title (GTK_WINDOW (window), "List Box");
gtk_window_set_default_size (GTK_WINDOW (window),
400, 600);
/* NULL window variable when window is closed */
g_signal_connect (window, "destroy",
G_CALLBACK (gtk_widget_destroyed),
&window);
vbox = gtk_box_new (GTK_ORIENTATION_VERTICAL, 12);
gtk_container_add (GTK_CONTAINER (window), vbox);
label = gtk_label_new ("Messages from Gtk+ and friends");
gtk_container_add (GTK_CONTAINER (vbox), label);
scrolled = gtk_scrolled_window_new (NULL, NULL);
gtk_scrolled_window_set_policy (GTK_SCROLLED_WINDOW (scrolled), GTK_POLICY_NEVER, GTK_POLICY_AUTOMATIC);
gtk_widget_set_vexpand (scrolled, TRUE);
gtk_container_add (GTK_CONTAINER (vbox), scrolled);
listbox = gtk_list_box_new ();
gtk_container_add (GTK_CONTAINER (scrolled), listbox);
gtk_list_box_set_sort_func (GTK_LIST_BOX (listbox), (GtkListBoxSortFunc)gtk_message_row_sort, listbox, NULL);
gtk_list_box_set_activate_on_single_click (GTK_LIST_BOX (listbox), FALSE);
g_signal_connect (listbox, "row-activated", G_CALLBACK (row_activated), NULL);
data = g_resources_lookup_data ("/listbox/messages.txt", 0, NULL);
lines = g_strsplit (g_bytes_get_data (data, NULL), "\n", 0);
for (i = 0; lines[i] != NULL && *lines[i]; i++)
{
message = gtk_message_new (lines[i]);
row = gtk_message_row_new (message);
gtk_widget_show (GTK_WIDGET (row));
gtk_container_add (GTK_CONTAINER (listbox), GTK_WIDGET (row));
}
g_strfreev (lines);
g_bytes_unref (data);
}
if (!gtk_widget_get_visible (window))
gtk_widget_show (window);
else
gtk_widget_destroy (window);
return window;
}