gtk2/demos/gtk-demo/application.c

450 lines
13 KiB
C
Raw Normal View History

/* Application class
*
* Demonstrates a simple application.
*
* This examples uses GtkApplication, GtkApplicationWindow, GtkBuilder
* as well as GMenu and GResource. Due to the way GtkApplication is structured,
* it is run as a separate process.
*/
#include "config.h"
#include <gtk/gtk.h>
#ifdef STANDALONE
static void
show_action_dialog (GSimpleAction *action)
{
const gchar *name;
GtkWidget *dialog;
name = g_action_get_name (G_ACTION (action));
dialog = gtk_message_dialog_new (NULL,
GTK_DIALOG_DESTROY_WITH_PARENT,
GTK_MESSAGE_INFO,
GTK_BUTTONS_CLOSE,
"You activated action: \"%s\"",
name);
g_signal_connect (dialog, "response",
G_CALLBACK (gtk_widget_destroy), NULL);
gtk_widget_show (dialog);
}
static void
show_action_infobar (GSimpleAction *action,
GVariant *parameter,
gpointer window)
{
GtkWidget *infobar;
GtkWidget *message;
gchar *text;
const gchar *name;
const gchar *value;
name = g_action_get_name (G_ACTION (action));
value = g_variant_get_string (parameter, NULL);
message = g_object_get_data (G_OBJECT (window), "message");
infobar = g_object_get_data (G_OBJECT (window), "infobar");
text = g_strdup_printf ("You activated radio action: \"%s\".\n"
"Current value: %s", name, value);
gtk_label_set_text (GTK_LABEL (message), text);
gtk_widget_show (infobar);
g_free (text);
}
static void
activate_action (GSimpleAction *action,
GVariant *parameter,
gpointer user_data)
{
show_action_dialog (action);
}
static void
activate_toggle (GSimpleAction *action,
GVariant *parameter,
gpointer user_data)
{
GVariant *state;
show_action_dialog (action);
state = g_action_get_state (G_ACTION (action));
g_action_change_state (G_ACTION (action), g_variant_new_boolean (!g_variant_get_boolean (state)));
g_variant_unref (state);
}
static void
activate_radio (GSimpleAction *action,
GVariant *parameter,
gpointer user_data)
{
show_action_infobar (action, parameter, user_data);
g_action_change_state (G_ACTION (action), parameter);
}
static void
activate_about (GSimpleAction *action,
GVariant *parameter,
gpointer user_data)
{
GtkWidget *window = user_data;
GdkPixbuf *pixbuf;
const gchar *authors[] = {
"Peter Mattis",
"Spencer Kimball",
"Josh MacDonald",
"and many more...",
NULL
};
const gchar *documentors[] = {
"Owen Taylor",
"Tony Gale",
"Matthias Clasen <mclasen@redhat.com>",
"and many more...",
NULL
};
pixbuf = gdk_pixbuf_new_from_resource ("/application/gtk-logo-48.png", NULL);
gtk_show_about_dialog (GTK_WINDOW (window),
"program-name", "GTK+ Code Demos",
"version", g_strdup_printf ("%s,\nRunning against GTK+ %d.%d.%d",
PACKAGE_VERSION,
gtk_get_major_version (),
gtk_get_minor_version (),
gtk_get_micro_version ()),
"copyright", "(C) 1997-2009 The GTK+ Team",
"license-type", GTK_LICENSE_LGPL_2_1,
"website", "http://www.gtk.org",
"comments", "Program to demonstrate GTK+ functions.",
"authors", authors,
"documenters", documentors,
"logo", pixbuf,
"title", "About GTK+ Code Demos",
NULL);
g_object_unref (pixbuf);
}
static void
activate_quit (GSimpleAction *action,
GVariant *parameter,
gpointer user_data)
{
GtkApplication *app = user_data;
GtkWidget *win;
GList *list, *next;
list = gtk_application_get_windows (app);
while (list)
{
win = list->data;
next = list->next;
gtk_widget_destroy (GTK_WIDGET (win));
list = next;
}
}
static void
update_statusbar (GtkTextBuffer *buffer,
GtkStatusbar *statusbar)
{
gchar *msg;
gint row, col;
gint count;
GtkTextIter iter;
/* clear any previous message, underflow is allowed */
gtk_statusbar_pop (statusbar, 0);
count = gtk_text_buffer_get_char_count (buffer);
gtk_text_buffer_get_iter_at_mark (buffer,
&iter,
gtk_text_buffer_get_insert (buffer));
row = gtk_text_iter_get_line (&iter);
col = gtk_text_iter_get_line_offset (&iter);
msg = g_strdup_printf ("Cursor at row %d column %d - %d chars in document",
row, col, count);
gtk_statusbar_push (statusbar, 0, msg);
g_free (msg);
}
static void
mark_set_callback (GtkTextBuffer *buffer,
const GtkTextIter *new_location,
GtkTextMark *mark,
gpointer data)
{
update_statusbar (buffer, GTK_STATUSBAR (data));
}
static void
change_theme_state (GSimpleAction *action,
GVariant *state,
gpointer user_data)
{
GtkSettings *settings = gtk_settings_get_default ();
g_object_set (G_OBJECT (settings),
"gtk-application-prefer-dark-theme",
g_variant_get_boolean (state),
NULL);
g_simple_action_set_state (action, state);
}
static void
change_titlebar_state (GSimpleAction *action,
GVariant *state,
gpointer user_data)
{
GtkWindow *window = user_data;
gtk_window_set_hide_titlebar_when_maximized (GTK_WINDOW (window),
g_variant_get_boolean (state));
g_simple_action_set_state (action, state);
}
static void
change_radio_state (GSimpleAction *action,
GVariant *state,
gpointer user_data)
{
g_simple_action_set_state (action, state);
}
static GActionEntry app_entries[] = {
{ "new", activate_action, NULL, NULL, NULL },
{ "open", activate_action, NULL, NULL, NULL },
{ "save", activate_action, NULL, NULL, NULL },
{ "save-as", activate_action, NULL, NULL, NULL },
{ "quit", activate_quit, NULL, NULL, NULL },
{ "dark", activate_toggle, NULL, "false", change_theme_state }
};
static GActionEntry win_entries[] = {
{ "titlebar", activate_toggle, NULL, "false", change_titlebar_state },
{ "shape", activate_radio, "s", "'oval'", change_radio_state },
{ "bold", activate_toggle, NULL, "false", NULL },
{ "about", activate_about, NULL, NULL, NULL },
{ "file1", activate_action, NULL, NULL, NULL },
{ "logo", activate_action, NULL, NULL, NULL }
};
static void
clicked_cb (GtkWidget *widget, GtkWidget *info)
{
gtk_widget_hide (info);
}
static void
startup (GApplication *app)
{
GtkBuilder *builder;
GMenuModel *appmenu;
GMenuModel *menubar;
builder = gtk_builder_new ();
gtk_builder_add_from_resource (builder, "/application/menus.ui", NULL);
appmenu = (GMenuModel *)gtk_builder_get_object (builder, "appmenu");
menubar = (GMenuModel *)gtk_builder_get_object (builder, "menubar");
gtk_application_set_app_menu (GTK_APPLICATION (app), appmenu);
gtk_application_set_menubar (GTK_APPLICATION (app), menubar);
g_object_unref (builder);
}
static void
activate (GApplication *app)
{
GtkBuilder *builder;
GtkWidget *window;
GtkWidget *grid;
GtkWidget *contents;
GtkWidget *status;
GtkWidget *message;
GtkWidget *button;
GtkWidget *infobar;
GtkWidget *menutool;
GMenuModel *toolmenu;
GtkTextBuffer *buffer;
window = gtk_application_window_new (GTK_APPLICATION (app));
gtk_window_set_title (GTK_WINDOW (window), "Application Class");
gtk_window_set_icon_name (GTK_WINDOW (window), "document-open");
gtk_window_set_default_size (GTK_WINDOW (window), 200, 200);
g_action_map_add_action_entries (G_ACTION_MAP (window),
win_entries, G_N_ELEMENTS (win_entries),
window);
builder = gtk_builder_new ();
gtk_builder_add_from_resource (builder, "/application/application.ui", NULL);
grid = (GtkWidget *)gtk_builder_get_object (builder, "grid");
contents = (GtkWidget *)gtk_builder_get_object (builder, "contents");
status = (GtkWidget *)gtk_builder_get_object (builder, "status");
message = (GtkWidget *)gtk_builder_get_object (builder, "message");
button = (GtkWidget *)gtk_builder_get_object (builder, "button");
infobar = (GtkWidget *)gtk_builder_get_object (builder, "infobar");
menutool = (GtkWidget *)gtk_builder_get_object (builder, "menutool");
toolmenu = (GMenuModel *)gtk_builder_get_object (builder, "toolmenu");
g_object_set_data (G_OBJECT (window), "message", message);
g_object_set_data (G_OBJECT (window), "infobar", infobar);
gtk_container_add (GTK_CONTAINER (window), grid);
gtk_menu_tool_button_set_menu (GTK_MENU_TOOL_BUTTON (menutool),
gtk_menu_new_from_model (toolmenu));
gtk_widget_grab_focus (contents);
g_signal_connect (button, "clicked", G_CALLBACK (clicked_cb), infobar);
/* Show text widget info in the statusbar */
buffer = gtk_text_view_get_buffer (GTK_TEXT_VIEW (contents));
g_signal_connect_object (buffer, "changed",
G_CALLBACK (update_statusbar), status, 0);
g_signal_connect_object (buffer, "mark-set",
G_CALLBACK (mark_set_callback), status, 0);
update_statusbar (buffer, GTK_STATUSBAR (status));
gtk_widget_show_all (window);
g_object_unref (builder);
}
int
main (int argc, char *argv[])
{
GtkApplication *app;
GSettings *settings;
GAction *action;
gtk_init (NULL, NULL);
app = gtk_application_new ("org.gtk.Demo", 0);
settings = g_settings_new ("org.gtk.Demo");
g_action_map_add_action_entries (G_ACTION_MAP (app),
app_entries, G_N_ELEMENTS (app_entries),
app);
action = g_settings_create_action (settings, "color");
g_action_map_add_action (G_ACTION_MAP (app), action);
g_signal_connect (app, "startup", G_CALLBACK (startup), NULL);
g_signal_connect (app, "activate", G_CALLBACK (activate), NULL);
g_application_run (G_APPLICATION (app), 0, NULL);
return 0;
}
#else /* !STANDALONE */
static gboolean name_seen;
static GtkWidget *placeholder;
static void
on_name_appeared (GDBusConnection *connection,
const gchar *name,
const gchar *name_owner,
gpointer user_data)
{
name_seen = TRUE;
}
static void
on_name_vanished (GDBusConnection *connection,
const gchar *name,
gpointer user_data)
{
if (!name_seen)
return;
if (placeholder)
{
gtk_widget_destroy (placeholder);
g_object_unref (placeholder);
placeholder = NULL;
}
}
#ifdef G_OS_WIN32
#define APP_EXTENSION ".exe"
#else
#define APP_EXTENSION
#endif
GtkWidget *
do_application (GtkWidget *toplevel)
{
static guint watch = 0;
if (watch == 0)
watch = g_bus_watch_name (G_BUS_TYPE_SESSION,
"org.gtk.Demo",
0,
on_name_appeared,
on_name_vanished,
NULL, NULL);
if (placeholder == NULL)
{
const gchar *command;
GError *error = NULL;
if (g_file_test ("./gtk3-demo-application" APP_EXTENSION, G_FILE_TEST_IS_EXECUTABLE))
command = "./gtk3-demo-application" APP_EXTENSION;
else
command = "gtk3-demo-application";
if (!g_spawn_command_line_async (command, &error))
{
g_warning ("%s", error->message);
g_error_free (error);
}
placeholder = gtk_label_new ("");
g_object_ref_sink (placeholder);
}
else
{
g_dbus_connection_call_sync (g_bus_get_sync (G_BUS_TYPE_SESSION, NULL, NULL),
"org.gtk.Demo",
"/org/gtk/Demo",
"org.gtk.Actions",
"Activate",
g_variant_new ("(sava{sv})", "quit", NULL, NULL),
NULL,
0,
G_MAXINT,
NULL, NULL);
}
return placeholder;
}
#endif