#include <pango/pangocairo.h>
#include <string.h>
+#include <math.h>
#include "score.h"
+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;
+
struct score_staff
{
score_clef_t clef;
}
}
+/* On which line would 'pitch' appear on 'staff'.
+ *
+ * Lines are numbered with line 0 as the top full line of the staff
+ * and increasing downward. So line values less than 0 will appear as
+ * ledger lines above the staff while line values greater than 4 will
+ * appear on ledger lines below the staff.
+ *
+ * A line value of 2 will be centered verticall on the staff.
+ *
+ * For notes appearing on a space, the line value will be half-way
+ * between two integers. */
static double
-_score_note_to_line (score_staff_t *staff, score_note_t *note)
+_score_staff_pitch_to_line (score_staff_t *staff, pitch_t pitch)
{
- pitch_name_t name = PITCH_NAME (note->pitch);
+ pitch_name_t name = PITCH_NAME (pitch);
+ int octave = PITCH_OCTAVE (pitch);
int c_line = _score_clef_c_line (staff->clef);
- return c_line - (name - PITCH_NAME_C) / 2.0 - 3.5 * (note->octave - 4);
+ return c_line - (name - PITCH_NAME_C) / 2.0 - 3.5 * (octave - 4);
}
/* chord->width is updated as a side effect */
* note on a ledger line above the staff). Values half way between
* integers indicate notes appearing on a space between two staff
* lines (or ledger lines). */
- line = _score_note_to_line (staff, note);
+ line = _score_staff_pitch_to_line (staff, note->pitch);
cairo_select_font_face (cr, "Gonville-26", 0, 0);
cairo_set_font_size (cr, score->staff_height);
}
void
-score_remove_chord (score_chord_t *chord)
+score_staff_remove_chords (score_staff_t *staff)
{
- score_staff_t *staff = chord->staff;
- int i;
-
- for (i = 0; i < staff->num_chords; i++)
- if (staff->chords[i] == chord)
- break;
+ talloc_free (staff->chords);
+ staff->chords = NULL;
- if (i == staff->num_chords)
- return;
+ staff->num_chords = 0;
+}
- if (i < staff->num_chords - 1)
- {
- memmove (staff->chords + i,
- staff->chords + i + 1,
- (staff->num_chords - 1 - i) * sizeof (score_chord_t *));
- }
+void
+score_remove_chords (score_t *score)
+{
+ int i;
- staff->num_chords -= 1;
+ for (i = 0; i < score->num_staves; i++)
+ score_staff_remove_chords (score->staves[i]);
}
-score_note_t *
-score_add_note (score_staff_t *staff,
- pitch_t pitch,
- int octave,
- score_duration_t duration)
+void
+score_staff_add_note (score_staff_t *staff,
+ pitch_t pitch,
+ score_duration_t duration)
{
score_note_t *note;
double line;
for (i = 0; i < staff->num_notes; i++) {
note = staff->notes[i];
if (note->pitch == pitch &&
- note->octave == octave &&
note->duration == duration)
{
- return note;
+ return;
}
}
note = talloc (staff, score_note_t);
if (note == NULL)
- return NULL;
+ return;
note->staff = staff;
note->pitch = pitch;
- 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);
+ line = _score_staff_pitch_to_line (staff, note->pitch);
if (line < 0) {
int lines = (int) (- line);
if (lines > staff->upper_ledger_lines)
staff->num_notes);
if (staff->notes == NULL) {
staff->num_notes = 0;
- return NULL;
+ return;
}
staff->notes[staff->num_notes - 1] = note;
-
- return note;
}
void
-score_remove_note (score_note_t *note)
+score_add_note (score_t *score, pitch_t pitch, score_duration_t duration)
{
- score_staff_t *staff = note->staff;
+ score_staff_t *staff, *nearest_staff = NULL;
+ double distance, nearest_distance = 0.0;
int i;
- for (i = 0; i < staff->num_notes; i++)
- if (staff->notes[i] == note)
- break;
-
- if (i == staff->num_notes)
+ /* Nothing to do if we have no staff, (there's no place to add a note) . */
+ if (score->num_staves == 0)
return;
- if (i < staff->num_notes - 1)
- {
- memmove (staff->notes + i,
- staff->notes + i + 1,
- (staff->num_notes - 1 - i) * sizeof (score_note_t *));
+ /* Find the staff where the note will be closest to the center of
+ * the staff. */
+ for (i = 0; i < score->num_staves; i++) {
+ staff = score->staves[i];
+ distance = fabs (_score_staff_pitch_to_line (staff, pitch) - 2.0);
+ if (nearest_staff == NULL || distance < nearest_distance) {
+ nearest_staff = staff;
+ nearest_distance = distance;
+ }
}
- staff->num_notes -= 1;
-
- if (staff->num_notes == 0) {
- staff->upper_ledger_lines = 0;
- staff->lower_ledger_lines = 0;
- }
+ score_staff_add_note (nearest_staff, pitch, duration);
}
void
-score_set_note_color_rgb (score_note_t *note,
- double r,
- double g,
- double b)
+score_staff_remove_notes (score_staff_t *staff)
{
- note->color.r = r;
- note->color.g = g;
- note->color.b = b;
+ talloc_free (staff->notes);
+ staff->notes = NULL;
+ staff->num_notes = 0;
+
+ staff->upper_ledger_lines = 0;
+ staff->lower_ledger_lines = 0;
}
-score_note_t *
-score_staff_find_note (score_staff_t *staff,
- pitch_t pitch,
- int octave,
- score_duration_t duration)
+void
+score_remove_notes (score_t *score)
{
int i;
- score_note_t *note;
-
- for (i = 0; i < staff->num_notes; i++) {
- note = staff->notes[i];
- if (note->pitch == pitch &&
- note->octave == octave &&
- note->duration == duration)
- {
- return note;
- }
- }
- return NULL;
+ for (i = 0; i < score->num_staves; i++)
+ score_staff_remove_notes (score->staves[i]);
}
projects / scherzo / blobdiff