From 6d1dd804ce022f0fbc3cebc853edcab5c81d5abc Mon Sep 17 00:00:00 2001
From: Carl Worth <cworth@cworth.org>
Date: Tue, 27 Sep 2011 17:12:39 -0700
Subject: [PATCH] Add some color coding of input notes.

Red for an incorrect note, and green for correct. (The challenge notes
remain black.)
---
 scherzo.c |  6 ++++--
 score.c   | 24 +++++++++++++++++++++---
 score.h   | 12 ++++++++++++
 3 files changed, 37 insertions(+), 5 deletions(-)

diff --git a/scherzo.c b/scherzo.c
index 98f70bd..2d43aee 100644
--- a/scherzo.c
+++ b/scherzo.c
@@ -325,10 +325,12 @@ _judge_note (scherzo_t *scherzo, score_note_t *note)
 	note->octave == challenge->note->octave)
     {
 	challenge->satisfied = 1;
+	score_set_note_color_rgb (note, 18/256., 130/256., 28/256.); /* green */
     }
     else
     {
 	challenge->mistaken = 1;
+	score_set_note_color_rgb (note, 184/256., 4/256., 22/256.); /* red */
     }
 }
 
@@ -420,7 +422,7 @@ main (int argc, char *argv[])
     scherzo.ctx = talloc_new (NULL);
 
     scherzo.score = score_create (scherzo.ctx);
-    scherzo.staff_height = 48;
+    scherzo.staff_height = 100;
     score_set_staff_height (scherzo.score, scherzo.staff_height);
 
     score_add_brace (scherzo.score, 2);
@@ -457,7 +459,7 @@ main (int argc, char *argv[])
 
     scherzo.window = gtk_window_new (GTK_WINDOW_TOPLEVEL);
 
-    gtk_window_set_default_size (GTK_WINDOW (scherzo.window), 600, 400);
+    gtk_window_set_default_size (GTK_WINDOW (scherzo.window), 1000, 600);
 
     g_signal_connect (scherzo.window, "delete-event",
 		      G_CALLBACK (on_delete_event_quit), NULL);
diff --git a/score.c b/score.c
index 26c5a02..db07d5e 100644
--- a/score.c
+++ b/score.c
@@ -75,10 +75,10 @@ score_create (void *ctx)
 	return NULL;
 
     /* Also sets space_height and line_width */
-    score_set_staff_height (score, 24);
+    score_set_staff_height (score, 76);
 
     /* Just to have some nominal width. */
-    score->width = 800;
+    score->width = 1000;
 
     score->braces = NULL;
     score->num_braces = 0;
@@ -243,7 +243,10 @@ _draw_note (score_t *score, cairo_t *cr,
 	}
     }
 
-    cairo_set_source_rgb (cr, 0.0, 0.0, 0.0); /* black */
+    cairo_set_source_rgb (cr,
+			  note->color.r,
+			  note->color.g,
+			  note->color.b);
     cairo_show_glyphs (cr, &note_glyph, 1);
 
     cairo_restore (cr);
@@ -442,6 +445,10 @@ score_add_note (score_staff_t *staff,
     note->octave = octave;
     note->duration = duration;
 
+    note->color.r = 0.0;
+    note->color.g = 0.0;
+    note->color.b = 0.0;
+
     line = _score_note_to_line (staff, note);
     if (line < 0) {
 	int lines = (int) (- line);
@@ -496,6 +503,17 @@ score_remove_note (score_note_t *note)
     }
 }
 
+void
+score_set_note_color_rgb (score_note_t *note,
+			  double r,
+			  double g,
+			  double b)
+{
+    note->color.r = r;
+    note->color.g = g;
+    note->color.b = b;
+}
+
 score_note_t *
 score_staff_find_note (score_staff_t *staff,
 		       score_pitch_t pitch,
diff --git a/score.h b/score.h
index 5317103..d1f0406 100644
--- a/score.h
+++ b/score.h
@@ -132,6 +132,12 @@ typedef struct score_note
     score_pitch_t pitch;
     int octave;
     score_duration_t duration;
+
+    struct {
+	double r;
+	double g;
+	double b;
+    } color;
 } score_note_t;
 
 typedef enum score_clef
@@ -189,6 +195,12 @@ score_add_note (score_staff_t *staff,
 void
 score_remove_note (score_note_t *note);
 
+void
+score_set_note_color_rgb (score_note_t *note,
+			  double r,
+			  double g,
+			  double b);
+
 /* Return the first note on the given staff with the given pitch,
  * octave, and durations. Returns NULL if no match is found. */
 score_note_t *
-- 
2.43.0