fixed intra-cluster nets flylines

Author: SamuelHo10

doc/src/vpr/graphics.rst

@@ -74,7 +74,7 @@ To visualize nets, first enable the **Display Nets** switch under the **Net** Ta
 The user can choose between drawing nets as **Flylines** (direct connections between sources and sinks) or as **Routing** (the actual routed path of the net).
 Only the **Flylines** option is available during placement, as routing has not yet been performed.
 
-The Inter-Cluster Nets and Intra-Cluster Nets options allow the user to choose whether to visualize nets between clbs or within a clb, respectively. The Intra-Cluster Nets option is currently only available when **flat routing is enabled**.
+The Inter-Cluster Nets and Intra-Cluster Nets options allow the user to choose whether to visualize nets between clbs or within a clb, respectively. The Intra-Cluster Routed Nets option is currently only available when **flat routing is enabled**.
 
 .. figure:: ../Images/Net_Settings.png
     :align: center 

vpr/src/draw/draw_toggle_functions.cpp

@@ -36,7 +36,7 @@ void toggle_show_nets_cbk(GtkSwitch*, gboolean state, ezgl::application* app) {
 
     gtk_widget_set_sensitive(GTK_WIDGET(app->get_object("ToggleNetType")), state);
     gtk_widget_set_sensitive(GTK_WIDGET(app->get_object("ToggleInterClusterNets")), state);
-    if (draw_state->is_flat) {
+    if (draw_state->is_flat || draw_state->draw_nets != DRAW_ROUTED_NETS) {
         gtk_widget_set_sensitive(GTK_WIDGET(app->get_object("ToggleIntraClusterNets")), state);
     }
     gtk_widget_set_sensitive(GTK_WIDGET(app->get_object("FanInFanOut")), state);
@@ -54,8 +54,18 @@ void toggle_draw_nets_cbk(GtkComboBox* self, ezgl::application* app) {
     // assign corresponding enum value to draw_state->show_nets
     if (strcmp(setting, "Routing") == 0) {
         new_state = DRAW_ROUTED_NETS;
+
+        // Make sure that intra-cluster routed nets is never enabled when flat routing is off
+        if (!draw_state->is_flat) {
+            gtk_widget_set_sensitive(GTK_WIDGET(app->get_object("ToggleIntraClusterNets")), false);
+            gtk_toggle_button_set_active(GTK_TOGGLE_BUTTON(app->get_object("ToggleIntraClusterNets")), false);
+            draw_state->draw_intra_cluster_nets = false;
+        }
+
     } else { // Flylines - direct connections between sources and sinks
         new_state = DRAW_FLYLINES;
+
+        gtk_widget_set_sensitive(GTK_WIDGET(app->get_object("ToggleIntraClusterNets")), true);
     }
 
     draw_state->draw_nets = new_state;