disable drawing xorrectangle (rectangle selection feedback)
to workaround crash, selection still works
void XORRectangle::draw() const
{
+#ifndef WORKAROUND_MACOS_GTK2_DESTROY
const int x = float_to_integer(m_rectangle.x);
const int y = float_to_integer(m_rectangle.y);
const int w = float_to_integer(m_rectangle.w);
cairo_set_source_rgb(cr, 1, 1, 1);
cairo_set_operator(cr, CAIRO_OPERATOR_DIFFERENCE);
cairo_stroke(cr);
+#endif
}
XORRectangle::XORRectangle(ui::GLArea widget) : m_widget(widget), cr(0)