#ifndef SCORE_H
#define SCORE_H
+#include <talloc.h>
#include <cairo.h>
-typedef struct score
+#include "pitch.h"
+
+typedef enum score_duration
+{
+ SCORE_DURATION_WHOLE = 1,
+ SCORE_DURATION_1 = 1,
+ SCORE_DURATION_HALF = 2,
+ SCORE_DURATION_2 = 2,
+ SCORE_DURATION_QUARTER = 4,
+ SCORE_DURATION_4 = 4,
+ SCORE_DURATION_EIGHTH = 8,
+ SCORE_DURATION_8 = 8,
+ SCORE_DURATION_SIXTEENTH = 16,
+ SCORE_DURATION_16 = 16,
+ SCORE_DURATION_THIRTYSECOND = 32,
+ SCORE_DURATION_32 = 32,
+ SCORE_DURATION_SIXTYFOURTH = 64,
+ SCORE_DURATION_64 = 64,
+ SCORE_DURATION_ONEHUNDREDTWENTYEIGHTH = 128,
+ SCORE_DURATION_128 = 128
+} score_duration_t;
+
+#define SCORE_BUILD_NOTE(pitch, octave, duration) SCORE_PITCH_##pitch, (octave), SCORE_DURATION_##duration
+
+typedef struct score score_t;
+typedef struct score_staff score_staff_t;
+
+typedef struct score_note
+{
+ score_staff_t *staff;
+ pitch_t pitch;
+ score_duration_t duration;
+
+ struct {
+ double r;
+ double g;
+ double b;
+ } color;
+} score_note_t;
+
+typedef struct score_chord
{
- /* Height of each space on staff. */
- int space_height;
+ score_staff_t *staff;
- /* Total width available to score. */
- int width;
-} score_t;
+ char *name;
+ double width;
+} score_chord_t;
+typedef enum score_clef
+{
+ SCORE_CLEF_G,
+ SCORE_CLEF_TREBLE = SCORE_CLEF_G,
+ SCORE_CLEF_F,
+ SCORE_CLEF_BASS = SCORE_CLEF_F
+} score_clef_t;
+
+/* Allocate a new, empty score object, (with optional ctx as talloc
+ * owner). If ctx is NULL, the caller should call talloc_free on the
+ * score_t* when done with it. Otherwise, the object will be freed
+ * when ctx is freed. */
+score_t *
+score_create (void *ctx);
+
+/* Set an (approximate) staff height. The actual staff height may
+ * differ due to rounding to achieve evenly spaced, sharply rendered
+ * lines. the actual staff height is returned. */
+int
+score_set_staff_height (score_t *score, int height);
+
+/* Set the total width available for drawing the score. */
void
-score_init (score_t *score);
+score_set_width (score_t *score, int width);
+
+/* Add a brace to the score, connecting the given number of staves.
+ *
+ * The staves to be connected are those that will next be added to the
+ * score. */
+void
+score_add_brace (score_t *score, int staves);
+
+/* Add a new staff to the score */
+score_staff_t *
+score_add_staff (score_t *score, score_clef_t clef);
+/* Add a note to a staff of the given pitch and duration.
+ *
+ * Duration values can be symbolic (SCORE_DURATION_WHOLE, _QUARTER,
+ * _EIGHTH, etc.) or numerical as simply the denominator (WHOLE=1,
+ * QUARTER=4, EIGHTH=8, etc.)
+ */
+score_note_t *
+score_add_note (score_staff_t *staff,
+ pitch_t pitch,
+ score_duration_t);
+
+/* Add a chord symbol of 'name' to a staff.
+ *
+ * For now, the chord symbols are free-form names.
+ *
+ * The chord name must be a talloc'ed string, which the returned
+ * score_chord_t will talloc_steal.
+ */
+score_chord_t *
+score_add_chord (score_staff_t *staff,
+ const char * name);
+
+/* Remove the given chord from its staff. */
+void
+score_remove_chord (score_chord_t *chord);
+
+/* Remove the given note from its 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 *
+score_staff_find_note (score_staff_t *staff,
+ pitch_t pitch,
+ score_duration_t duration);
+
+/* Draw the given score_t onto the given cairo_t.
+ *
+ * The caller can call cairo_translate before calling score_draw to
+ * position the result as desired, (and can call cairo_clip to clip it
+ * if desired). */
void
score_draw (score_t *score, cairo_t *cr);