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Add some copy-paste for widgets demo

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Not sure this is quite right yet.
This commit is contained in:
Matthias Clasen 2017-12-05 17:45:39 -08:00
parent 2a49371e07
commit 2dae71c619
1 changed files with 156 additions and 5 deletions
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161
demos/gtk-demo/dnd.c
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@ -50,6 +50,109 @@ gtk_demo_widget_new (void)
return g_object_new (GTK_TYPE_DEMO_WIDGET, NULL);
}
static double pos_x, pos_y;
static void
new_label_cb (GtkMenuItem *item,
gpointer data)
{
GtkFixed *fixed = data;
GtkWidget *widget;
widget = gtk_label_new ("Label");
gtk_fixed_put (fixed, widget, pos_x, pos_y);
}
static void
new_spinner_cb (GtkMenuItem *item,
gpointer data)
{
GtkFixed *fixed = data;
GtkWidget *widget;
widget = gtk_spinner_new ();
gtk_spinner_start (GTK_SPINNER (widget));
gtk_fixed_put (fixed, widget, pos_x, pos_y);
}
static void
new_demo_cb (GtkMenuItem *item,
gpointer data)
{
GtkFixed *fixed = data;
GtkWidget *widget;
widget = gtk_demo_widget_new ();
gtk_fixed_put (fixed, widget, pos_x, pos_y);
}
static void
copy_cb (GtkMenuItem *item,
gpointer data)
{
GtkWidget *child = data;
GdkClipboard *clipboard;
GValue value = { 0, };
g_print ("Copy %s!\n", g_type_name_from_instance ((GTypeInstance *)child));
g_value_init (&value, G_OBJECT_TYPE (child));
g_value_set_object (&value, child);
clipboard = gdk_display_get_clipboard (gdk_display_get_default ());
gdk_clipboard_set_value (clipboard, &value);
}
static void
value_read (GObject *source,
GAsyncResult *res,
gpointer data)
{
GdkClipboard *clipboard = GDK_CLIPBOARD (source);
GError *error = NULL;
const GValue *value;
GtkWidget *widget;
GtkWidget *new_widget;
value = gdk_clipboard_read_value_finish (clipboard, res, &error);
if (value == NULL)
{
g_print ("error: %s\n", error->message);
g_error_free (error);
return;
}
widget = g_value_get_object (value);
if (GTK_IS_LABEL (widget))
new_widget = gtk_label_new (gtk_label_get_text (GTK_LABEL (widget)));
else if (GTK_IS_SPINNER (widget))
{
new_widget = gtk_spinner_new ();
gtk_spinner_start (GTK_SPINNER (new_widget));
}
else
{
return;
}
gtk_fixed_put (GTK_FIXED (data), new_widget, pos_x, pos_y);
}
static void
paste_cb (GtkMenuItem *item,
gpointer data)
{
GdkClipboard *clipboard;
clipboard = gdk_display_get_clipboard (gdk_display_get_default ());
if (gdk_content_formats_contain_gtype (gdk_clipboard_get_formats (clipboard), GTK_TYPE_LABEL))
gdk_clipboard_read_value_async (clipboard, GTK_TYPE_LABEL, 0, NULL, value_read, data);
else if (gdk_content_formats_contain_gtype (gdk_clipboard_get_formats (clipboard), GTK_TYPE_SPINNER))
gdk_clipboard_read_value_async (clipboard, GTK_TYPE_SPINNER, 0, NULL, value_read, data);
else
g_print ("Don't know how to handle clipboard contents\n");
}
static void
pressed_cb (GtkGesture *gesture,
int n_press,
@ -57,14 +160,62 @@ pressed_cb (GtkGesture *gesture,
double y,
gpointer data)
{
if (gtk_gesture_single_get_current_button (GTK_GESTURE_SINGLE (gesture)) == GDK_BUTTON_SECONDARY)
{
GtkWidget *widget;
GdkRectangle rect;
GtkWidget *menu;
GtkWidget *item;
GtkWidget *child;
GdkClipboard *clipboard;
widget = gtk_event_controller_get_widget (GTK_EVENT_CONTROLLER (gesture));
child = gtk_widget_pick (widget, x, y);
pos_x = x;
pos_y = y;
menu = gtk_menu_new ();
item = gtk_menu_item_new_with_label ("New Label");
g_signal_connect (item, "activate", G_CALLBACK (new_label_cb), widget);
gtk_container_add (GTK_CONTAINER (menu), item);
item = gtk_menu_item_new_with_label ("New Spinner");
g_signal_connect (item, "activate", G_CALLBACK (new_spinner_cb), widget);
gtk_container_add (GTK_CONTAINER (menu), item);
item = gtk_menu_item_new_with_label ("New Custom");
g_signal_connect (item, "activate", G_CALLBACK (new_demo_cb), widget);
gtk_container_add (GTK_CONTAINER (menu), item);
item = gtk_separator_menu_item_new ();
gtk_container_add (GTK_CONTAINER (menu), item);
item = gtk_menu_item_new_with_label ("Copy");
gtk_widget_set_sensitive (item, child != NULL && child != widget);
g_signal_connect (item, "activate", G_CALLBACK (copy_cb), child);
gtk_container_add (GTK_CONTAINER (menu), item);
item = gtk_menu_item_new_with_label ("Paste");
clipboard = gdk_display_get_clipboard (gdk_display_get_default ());
if (gdk_content_formats_contain_gtype (gdk_clipboard_get_formats (clipboard), GTK_TYPE_LABEL) ||
gdk_content_formats_contain_gtype (gdk_clipboard_get_formats (clipboard), GTK_TYPE_SPINNER))
gtk_widget_set_sensitive (item, TRUE);
else
gtk_widget_set_sensitive (item, FALSE);
g_signal_connect (item, "activate", G_CALLBACK (paste_cb), child);
gtk_container_add (GTK_CONTAINER (menu), item);
rect.x = x;
rect.y = y;
rect.width = 0;
rect.height = 0;
gtk_menu_popup_at_rect (GTK_MENU (menu),
gtk_widget_get_window (widget),
&rect,
GDK_GRAVITY_NORTH_WEST,
GDK_GRAVITY_NORTH_WEST,
NULL);
if (n_press < 2)
return;
widget = gtk_demo_widget_new ();
gtk_fixed_put (GTK_FIXED (gtk_event_controller_get_widget (GTK_EVENT_CONTROLLER (gesture))), widget, x, y);
}
}
static GtkWidget *window = NULL;