325 lines
9.8 KiB
C
325 lines
9.8 KiB
C
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/* Pickers and Launchers
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* #Keywords: GtkColorDialog, GtkFontDialog, GtkFileDialog, GtkPrintDialog, GtkFileLauncher, GtkUriLauncher
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*
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* The dialogs are mainly intended for use in preference dialogs.
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* They allow to select colors, fonts and files. There is also a
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* print dialog.
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*
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* The launchers let you open files or URIs in applications that
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* can handle them.
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*/
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#include <gtk/gtk.h>
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static GtkWidget *app_picker;
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static GtkWidget *print_button;
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static void
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set_file (GFile *file,
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gpointer data)
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{
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GFileInfo *info;
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char *name;
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if (!file)
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{
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gtk_widget_set_sensitive (app_picker, FALSE);
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g_object_set_data (G_OBJECT (app_picker), "file", NULL);
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return;
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}
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name = g_file_get_basename (file);
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gtk_label_set_label (GTK_LABEL (data), name);
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g_free (name);
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gtk_widget_set_sensitive (app_picker, TRUE);
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g_object_set_data_full (G_OBJECT (app_picker), "file", g_object_ref (file), g_object_unref);
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info = g_file_query_info (file, "standard::content-type", 0, NULL, NULL);
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if (strcmp (g_file_info_get_content_type (info), "application/pdf") == 0)
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{
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gtk_widget_set_sensitive (print_button, TRUE);
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g_object_set_data_full (G_OBJECT (print_button), "file", g_object_ref (file), g_object_unref);
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}
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}
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static void
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file_opened (GObject *source,
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GAsyncResult *result,
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void *data)
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{
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GFile *file;
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GError *error = NULL;
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file = gtk_file_dialog_open_finish (GTK_FILE_DIALOG (source), result, &error);
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if (!file)
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{
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g_print ("%s\n", error->message);
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g_error_free (error);
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gtk_widget_set_sensitive (app_picker, FALSE);
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g_object_set_data (G_OBJECT (app_picker), "file", NULL);
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gtk_widget_set_sensitive (print_button, FALSE);
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g_object_set_data (G_OBJECT (print_button), "file", NULL);
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}
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set_file (file, data);
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}
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static gboolean
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abort_mission (gpointer data)
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{
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GCancellable *cancellable = data;
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g_cancellable_cancel (cancellable);
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return G_SOURCE_REMOVE;
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}
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static void
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open_file (GtkButton *picker,
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GtkLabel *label)
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{
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GtkWindow *parent = GTK_WINDOW (gtk_widget_get_root (GTK_WIDGET (picker)));
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GtkFileDialog *dialog;
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GCancellable *cancellable;
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dialog = gtk_file_dialog_new ();
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cancellable = g_cancellable_new ();
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g_timeout_add_seconds_full (G_PRIORITY_DEFAULT,
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20,
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abort_mission, g_object_ref (cancellable), g_object_unref);
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gtk_file_dialog_open (dialog, parent, cancellable, file_opened, label);
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g_object_unref (cancellable);
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g_object_unref (dialog);
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}
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static void
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open_app_done (GObject *source,
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GAsyncResult *result,
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gpointer data)
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{
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GtkFileLauncher *launcher = GTK_FILE_LAUNCHER (source);
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GError *error = NULL;
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if (!gtk_file_launcher_launch_finish (launcher, result, &error))
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{
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g_print ("%s\n", error->message);
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g_error_free (error);
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}
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}
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static void
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open_app (GtkButton *picker)
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{
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GtkWindow *parent = GTK_WINDOW (gtk_widget_get_root (GTK_WIDGET (picker)));
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GtkFileLauncher *launcher;
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GFile *file;
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file = G_FILE (g_object_get_data (G_OBJECT (picker), "file"));
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launcher = gtk_file_launcher_new (file);
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gtk_file_launcher_launch (launcher, parent, NULL, open_app_done, NULL);
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g_object_unref (launcher);
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}
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static void
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print_file_done (GObject *source,
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GAsyncResult *result,
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gpointer data)
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{
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GtkPrintDialog *dialog = GTK_PRINT_DIALOG (source);
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GError *error = NULL;
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GCancellable *cancellable;
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unsigned int id;
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cancellable = g_task_get_cancellable (G_TASK (result));
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id = GPOINTER_TO_UINT (g_object_get_data (G_OBJECT (cancellable), "timeout"));
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if (id)
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g_source_remove (id);
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if (!gtk_print_dialog_print_file_finish (dialog, result, &error))
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{
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g_print ("%s\n", error->message);
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g_error_free (error);
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}
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}
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static void
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print_file (GtkButton *picker)
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{
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GtkWindow *parent = GTK_WINDOW (gtk_widget_get_root (GTK_WIDGET (picker)));
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GtkPrintDialog *dialog;
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GCancellable *cancellable;
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GFile *file;
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unsigned int id;
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file = G_FILE (g_object_get_data (G_OBJECT (picker), "file"));
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dialog = gtk_print_dialog_new ();
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cancellable = g_cancellable_new ();
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id = g_timeout_add_seconds_full (G_PRIORITY_DEFAULT,
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20,
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abort_mission, g_object_ref (cancellable), g_object_unref);
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g_object_set_data (G_OBJECT (cancellable), "timeout", GUINT_TO_POINTER (id));
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gtk_print_dialog_print_file (dialog, parent, NULL, file, cancellable, print_file_done, NULL);
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g_object_unref (cancellable);
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g_object_unref (dialog);
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}
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static void
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open_uri_done (GObject *source,
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GAsyncResult *result,
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gpointer data)
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{
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GtkUriLauncher *launcher = GTK_URI_LAUNCHER (source);
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GError *error = NULL;
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if (!gtk_uri_launcher_launch_finish (launcher, result, &error))
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{
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g_print ("%s\n", error->message);
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g_error_free (error);
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}
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}
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static void
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launch_uri (GtkButton *picker)
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{
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GtkWindow *parent = GTK_WINDOW (gtk_widget_get_root (GTK_WIDGET (picker)));
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GtkUriLauncher *launcher;
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launcher = gtk_uri_launcher_new ("http://www.gtk.org");
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gtk_uri_launcher_launch (launcher, parent, NULL, open_uri_done, NULL);
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g_object_unref (launcher);
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}
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static gboolean
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on_drop (GtkDropTarget *target,
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const GValue *value,
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double x,
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double y,
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gpointer data)
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{
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if (G_VALUE_HOLDS (value, G_TYPE_FILE))
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{
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set_file (g_value_get_object (value), data);
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return TRUE;
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}
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return FALSE;
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}
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GtkWidget *
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do_pickers (GtkWidget *do_widget)
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{
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static GtkWidget *window = NULL;
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GtkWidget *table, *label, *picker, *button;
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GtkDropTarget *drop_target;
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if (!window)
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{
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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), "Pickers and Launchers");
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g_object_add_weak_pointer (G_OBJECT (window), (gpointer *)&window);
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table = gtk_grid_new ();
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gtk_widget_set_margin_start (table, 20);
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gtk_widget_set_margin_end (table, 20);
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gtk_widget_set_margin_top (table, 20);
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gtk_widget_set_margin_bottom (table, 20);
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gtk_grid_set_row_spacing (GTK_GRID (table), 6);
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gtk_grid_set_column_spacing (GTK_GRID (table), 6);
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gtk_window_set_child (GTK_WINDOW (window), table);
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label = gtk_label_new ("Color:");
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gtk_widget_set_halign (label, GTK_ALIGN_START);
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gtk_widget_set_valign (label, GTK_ALIGN_CENTER);
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gtk_widget_set_hexpand (label, TRUE);
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gtk_grid_attach (GTK_GRID (table), label, 0, 0, 1, 1);
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picker = gtk_color_dialog_button_new (gtk_color_dialog_new ());
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gtk_label_set_mnemonic_widget (GTK_LABEL (label), picker);
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gtk_grid_attach (GTK_GRID (table), picker, 1, 0, 1, 1);
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label = gtk_label_new ("Font:");
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gtk_widget_set_halign (label, GTK_ALIGN_START);
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gtk_widget_set_valign (label, GTK_ALIGN_CENTER);
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gtk_widget_set_hexpand (label, TRUE);
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gtk_grid_attach (GTK_GRID (table), label, 0, 1, 1, 1);
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picker = gtk_font_dialog_button_new (gtk_font_dialog_new ());
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gtk_label_set_mnemonic_widget (GTK_LABEL (label), picker);
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gtk_grid_attach (GTK_GRID (table), picker, 1, 1, 1, 1);
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label = gtk_label_new ("File:");
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gtk_widget_set_halign (label, GTK_ALIGN_START);
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gtk_widget_set_valign (label, GTK_ALIGN_CENTER);
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gtk_widget_set_hexpand (label, TRUE);
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gtk_grid_attach (GTK_GRID (table), label, 0, 2, 1, 1);
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picker = gtk_box_new (GTK_ORIENTATION_HORIZONTAL, 6);
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button = gtk_button_new_from_icon_name ("document-open-symbolic");
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gtk_accessible_update_property (GTK_ACCESSIBLE (button),
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GTK_ACCESSIBLE_PROPERTY_LABEL, "Select File",
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-1);
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label = gtk_label_new ("None");
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drop_target = gtk_drop_target_new (G_TYPE_FILE, GDK_ACTION_COPY);
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g_signal_connect (drop_target, "drop", G_CALLBACK (on_drop), label);
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gtk_widget_add_controller (button, GTK_EVENT_CONTROLLER (drop_target));
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gtk_label_set_xalign (GTK_LABEL (label), 0.);
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gtk_label_set_ellipsize (GTK_LABEL (label), PANGO_ELLIPSIZE_MIDDLE);
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gtk_widget_set_hexpand (label, TRUE);
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g_signal_connect (button, "clicked", G_CALLBACK (open_file), label);
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gtk_box_append (GTK_BOX (picker), label);
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gtk_box_append (GTK_BOX (picker), button);
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app_picker = gtk_button_new_from_icon_name ("emblem-system-symbolic");
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gtk_widget_set_halign (app_picker, GTK_ALIGN_END);
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gtk_accessible_update_property (GTK_ACCESSIBLE (app_picker),
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GTK_ACCESSIBLE_PROPERTY_LABEL, "Open File",
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-1);
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gtk_widget_set_sensitive (app_picker, FALSE);
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g_signal_connect (app_picker, "clicked", G_CALLBACK (open_app), NULL);
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gtk_box_append (GTK_BOX (picker), app_picker);
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print_button = gtk_button_new_from_icon_name ("printer-symbolic");
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gtk_widget_set_tooltip_text (print_button, "Print file");
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gtk_widget_set_sensitive (print_button, FALSE);
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g_signal_connect (print_button, "clicked", G_CALLBACK (print_file), NULL);
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gtk_box_append (GTK_BOX (picker), print_button);
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gtk_grid_attach (GTK_GRID (table), picker, 1, 2, 1, 1);
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label = gtk_label_new ("URI:");
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gtk_widget_set_halign (label, GTK_ALIGN_START);
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gtk_widget_set_valign (label, GTK_ALIGN_CENTER);
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gtk_widget_set_hexpand (label, TRUE);
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gtk_grid_attach (GTK_GRID (table), label, 0, 3, 1, 1);
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picker = gtk_button_new_with_label ("www.gtk.org");
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g_signal_connect (picker, "clicked", G_CALLBACK (launch_uri), NULL);
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gtk_grid_attach (GTK_GRID (table), picker, 1, 3, 1, 1);
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}
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if (!gtk_widget_get_visible (window))
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gtk_window_present (GTK_WINDOW (window));
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else
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gtk_window_destroy (GTK_WINDOW (window));
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return window;
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}
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