Fix a couple of rendering corner cases

3 files changed, 34 insertions, 20 deletions

diff --git a/src/drawing.c b/src/drawing.c
index 89d3ef6..0f6afb0 100644
--- a/src/drawing.c
+++ b/src/drawing.c
@@ -1221,6 +1221,13 @@ draw_parameters_noise(void) {
 void
 draw_parameters(void) {
     clear_parameters();
+    if (input_handler != handle_trigger_selection &&
+            input_handler != handle_param_selection_sq1 &&
+            input_handler != handle_param_selection_sq2 &&
+            input_handler != handle_param_selection_wave &&
+            input_handler != handle_param_selection_noise) {
+        return;
+    }
     Pattern *pat = &patterns[pattern_selection_loc];
     switch (channel_selection_loc) {
         case 0: {
@@ -1238,3 +1245,7 @@ draw_parameters(void) {
     }
 }
 
+void
+draw_cursors(void) {
+
+}
diff --git a/src/main.c b/src/main.c
index b6be6b9..aa5bd43 100644
--- a/src/main.c
+++ b/src/main.c
@@ -21,8 +21,6 @@ WITH REGARD TO THIS SOFTWARE.
 
 void
 render(void) {
-    // TODO: Decouple update from rendering.
-    // PROF(screen_fill(0), clear_cycles);
     PROF(draw_rect(0, 0, SCREEN_WIDTH - 1, SCREEN_HEIGHT - 1, 1), clear_cycles);
     if (redraw_trigs) {
         PROF(draw_triggers(), draw_trigs_cycles);
@@ -51,10 +49,17 @@ render(void) {
     }
     if (redraw_piano_note) {
         PROF(draw_piano(), draw_piano_cycles);
-        // TODO: Draw the notes currently playing with a fade off animation for
-        // the first 3 channels.
-        TriggerNote *trig = get_current_trig();
-        PROF(draw_note(trig->note, COL_NOTE_PRESSED), draw_piano_cycles);
+        if (input_handler != handle_trigger_selection &&
+                input_handler != handle_param_selection_sq1 &&
+                input_handler != handle_param_selection_sq2 &&
+                input_handler != handle_param_selection_wave &&
+                input_handler != handle_param_selection_noise) {
+            // TODO: Show last/current played notes in all channels.
+        } else {
+            // Show currently selected trigger note.
+            TriggerNote *trig = get_current_trig();
+            PROF(draw_note(trig->note, COL_NOTE_PRESSED), draw_piano_cycles);
+        }
         redraw_piano_note = false;
     }
     if (redraw_params) {
@@ -97,6 +102,7 @@ main(void) {
         FRAME_START();
         PROF(flip_buffer(), flip_cycles);
         PROF(handle_sequencer_input(), input_cycles);
+        // TODO: Update function to performa animations, etc.
         PROF(render(), render_cycles);
         FRAME_END();
     }
diff --git a/src/sequencer.c b/src/sequencer.c
index a560bcb..34e2695 100644
--- a/src/sequencer.c
+++ b/src/sequencer.c
@@ -749,16 +749,16 @@ handle_trigger_selection(void) {
         // Decrease note.
         if (trig->active) {
             trig->note = MAX(trig->note - 1, NOTE_C_2);
-            redraw_trigs = true;
-            redraw_piano_note = true;
         }
+        redraw_trigs = true;
+        redraw_piano_note = true;
     } else if (key_tap(KEY_R)) {
         // Increase note.
         if (trig->active) {
             trig->note = MIN( trig->note + 1, NOTE_C_8 - 1);
-            redraw_trigs = true;
-            redraw_piano_note = true;
         }
+        redraw_trigs = true;
+        redraw_piano_note = true;
     }
 
     // Move trigger cursor.
@@ -766,30 +766,27 @@ handle_trigger_selection(void) {
         if (trig_selection_loc == 0 || trig_selection_loc == 8) {
             // We are at the boundary, switch to channel selection.
             input_handler = handle_channel_selection;
-            redraw_params = true;
         } else {
             trig_selection_loc = MAX(trig_selection_loc - 1, 0);
-            redraw_piano_note = true;
-            redraw_params = true;
         }
+        redraw_params = true;
+        redraw_piano_note = true;
     } else if (key_tap(KEY_RIGHT)) {
         if (trig_selection_loc != 7 && trig_selection_loc != 15) {
             trig_selection_loc = MIN(trig_selection_loc + 1, 15);
-            redraw_piano_note = true;
-            redraw_params = true;
         } else if (trig_selection_loc == 7) {
             input_handler = handle_right_col_selection;
             right_col_selection_loc = R_COL_STOP;
-            redraw_params = true;
         } else if (trig_selection_loc == 15) {
             right_col_selection_loc = R_COL_BPM;
             input_handler = handle_right_col_selection;
-            redraw_params = true;
         }
+        redraw_params = true;
+        redraw_piano_note = true;
     } else if (key_tap(KEY_UP) || key_tap(KEY_DOWN)) {
         trig_selection_loc = (trig_selection_loc + 8) % 16;
-        redraw_piano_note = true;
         redraw_params = true;
+        redraw_piano_note = true;
     } else if (key_tap(KEY_A)) {
         // Switch to parameter selection.
         switch (channel_selection_loc) {
@@ -806,8 +803,8 @@ handle_trigger_selection(void) {
                 input_handler = handle_param_selection_noise;
             } break;
         }
-        redraw_piano_note = true;
         redraw_params = true;
+        redraw_piano_note = true;
     }
 }
 
@@ -817,7 +814,7 @@ handle_sequencer_input(void) {
         // Stop the sequencer or start playing from the beginning.
         toggle_playing();
     } else if (key_hold(KEY_SELECT)) {
-        if (input_handler == handle_param_selection_sq1 || 
+        if (input_handler == handle_param_selection_sq1 ||
                 input_handler == handle_param_selection_sq2 ||
                 input_handler == handle_param_selection_wave ||
                 input_handler == handle_param_selection_noise) {