Fix some minor bugs and try to improve consistency.

1 files changed, 14 insertions, 5 deletions

diff --git a/src/drawing.c b/src/drawing.c
index 274fe66..97435ad 100644
--- a/src/drawing.c
+++ b/src/drawing.c
@@ -1251,11 +1251,20 @@ draw_parameters(void) {
             input_handler == handle_param_selection_sq2 ||
             input_handler == handle_param_selection_wave ||
             input_handler == handle_param_selection_noise) {
-        switch (channel_selection_loc) {
-            case 0: { draw_parameters_square(&pat->ch1.params[trig_selection_loc], true, false); } break;
-            case 1: { draw_parameters_square(&pat->ch2.params[trig_selection_loc], false, false); } break;
-            case 2: { draw_parameters_wave(&pat->ch3.params[trig_selection_loc], false); } break;
-            case 3: { draw_parameters_noise(&pat->ch4.params[trig_selection_loc], false); } break;
+        if (!pat->empty) {
+            switch (channel_selection_loc) {
+                case 0: { draw_parameters_square(&pat->ch1.params[trig_selection_loc], true, false); } break;
+                case 1: { draw_parameters_square(&pat->ch2.params[trig_selection_loc], false, false); } break;
+                case 2: { draw_parameters_wave(&pat->ch3.params[trig_selection_loc], false); } break;
+                case 3: { draw_parameters_noise(&pat->ch4.params[trig_selection_loc], false); } break;
+            }
+        } else {
+            switch (channel_selection_loc) {
+                case 0: { draw_parameters_square(&default_ch1.params, true, false); } break;
+                case 1: { draw_parameters_square(&default_ch2.params, false, false); } break;
+                case 2: { draw_parameters_wave(&default_ch3.params, true); } break;
+                case 3: { draw_parameters_noise(&default_ch4.params, true); } break;
+            }
         }
         return;
     }