Do not constrain vertical size without need

A value of -1 means "let the widget use its natural size in that
direction".

diff --git a/gtk2_ardour/generic_pluginui.cc b/gtk2_ardour/generic_pluginui.cc
index f203a9ee458da46666fb8eba1f4704f47aa2b205..f7b30e2d18a5b8877007f99c7424df243302c170 100644 (file)
--- a/gtk2_ardour/generic_pluginui.cc
+++ b/gtk2_ardour/generic_pluginui.cc
@@ -766,7 +766,7 @@ GenericPluginUI::build_control_ui (const Evoral::Parameter&             param,
                        } else if (use_knob) {
                                control_ui->controller->set_size_request (req.height * 1.5, req.height * 1.5);
                        } else {
-                               control_ui->controller->set_size_request (200, req.height);
+                               control_ui->controller->set_size_request (200, -1);
                                control_ui->controller->set_name (X_("ProcessorControlSlider"));
                        }