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GObject
╰── GInitiallyUnowned
╰── GtkWidget
╰── GtkContainer
╰── GtkBin
╰── GtkWindow
╰── GwyResourceEditor
╰── GwyGradientEditor
GwyGradientEditor is the application color gradient editor. The interface is currently extremely simple:
gwy_app_gradient_editor() invokes the editor (or brings it forward) and then it's user-controlled.
void
gwy_app_gradient_editor (void);
Creates or presents color gradient editor.
Gradient editor is singleton, therefore if it doesn't exist, this function creates and displays it. If it already
exists, it simply calls gtk_window_present() on the existing instance. It exists until it's closed by user.