* along with this program. If not, see http://www.gnu.org/licenses/ .
*/
+#include <pango/pangocairo.h>
+
+#include <string.h>
+#include <math.h>
+
#include "score.h"
+#define ARRAY_SIZE(arr) ((int) (sizeof(arr) / sizeof(arr[0])))
+
+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;
+
+ score_chord_t **chords;
+ int num_chords;
+
+ score_note_t **notes;
+ int num_notes;
+
+ /* How many ledger lines are needed for current notes */
+ int upper_ledger_lines;
+ int lower_ledger_lines;
+
+ /* Y position of top full line of staff */
+ int y_pos;
+};
+
+typedef struct score_brace
+{
+ int first_staff;
+ int num_staves;
+} score_brace_t;
+
struct score
{
- /* Height of a single staff */
+ /* Nominal height of a single staff (ledger lines may make it larger) */
int staff_height;
/* Height of one space within a staff */
/* Full width of staff */
int width;
+
+ /* Current (diatonic) key */
+ scherzo_key_t key;
+
+ score_brace_t **braces;
+ int num_braces;
+ int brace_width;
+
+ score_staff_t **staves;
+ int num_staves;
};
score_t *
score_t *score;
score = talloc (ctx, score_t);
- score_set_staff_height (score, 24);
+ if (score == NULL)
+ return NULL;
+
+ /* Also sets space_height and line_width */
+ score_set_staff_height (score, 76);
+
+ /* Just to have some nominal width. */
+ score->width = 1000;
+
+ /* Default to C, of course */
+ score->key.pitch = PITCH_CLASS_LITERAL (C, NATURAL);
+ score->key.num_sharps = 0;
+ score->key.num_flats = 0;
+
+ score->braces = NULL;
+ score->num_braces = 0;
+
+ score->staves = NULL;
+ score->num_staves = 0;
return score;
}
score->space_height = (int) height / 4;
score->staff_height = score->space_height * 4;
- score->line_width = score->space_height / 15;
+ score->line_width = score->space_height / 10;
if (score->line_width == 0)
score->line_width = 1;
score->width = width;
}
-typedef enum score_clef
+void
+score_set_key (score_t *score, pitch_t key)
{
- SCORE_CLEF_G,
- SCORE_CLEF_F
-} score_clef_t;
+ scherzo_key_init (&score->key, key);
+}
+
+/* Returns in brace_width the width of the brace */
static void
-_draw_staff (score_t *score, cairo_t *cr, score_clef_t clef)
+_draw_brace (score_t *score, cairo_t *cr,
+ score_brace_t *brace, int *brace_width)
+{
+ cairo_glyph_t brace_glyph;
+ cairo_text_extents_t brace_extents;
+ double top, bottom;
+
+ if (brace->num_staves == 0)
+ return;
+
+ cairo_save (cr);
+
+ top = score->staves[brace->first_staff]->y_pos;
+ bottom = score->staves[brace->first_staff + brace->num_staves - 1]->y_pos + score->staff_height;
+
+ cairo_select_font_face (cr, "Gonville-Brace", 0, 0);
+
+ /* XXX: This hard-coded glyph index is pretty ugly. We should
+ * figure out how to lookup the glyph we want, (though, as it
+ * turns out, this brace font pretty much just has numbered glyph
+ * names for different sizes, so it wouldn't be all that different
+ * than just the bare index here). */
+ brace_glyph.index = 300;
+ brace_glyph.x = 0;
+ brace_glyph.y = top + (bottom - top) / 2.0 + score->line_width / 2.0;
+
+ /* XXX: This font size (in conjunction with the glyph selection)
+ * is a rough guess at best. We should figure out how the brace
+ * font is intended to be used and actually measure to find the
+ * correctly-sized glyph. */
+ cairo_set_font_size (cr, (bottom - top) / 3.85);
+
+ cairo_glyph_extents (cr, &brace_glyph, 1, &brace_extents);
+
+ /* Subtract space for brace itself */
+ cairo_translate (cr, -brace_extents.x_bearing, 0);
+
+ cairo_set_source_rgb (cr, 0.0, 0.0, 0.0); /* black */
+ cairo_show_glyphs (cr, &brace_glyph, 1);
+
+ cairo_restore (cr);
+
+ *brace_width = (int) -brace_extents.x_bearing;
+}
+
+/* Line containing middle C for the given clef. */
+static int
+_score_clef_c_line (score_clef_t clef)
+{
+ switch (clef)
+ {
+ default:
+ case SCORE_CLEF_G:
+ return 5;
+ case SCORE_CLEF_F:
+ return -1;
+ }
+}
+
+/* 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_staff_pitch_to_line (score_staff_t *staff, pitch_t 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 * (octave - 4);
+}
+
+/* chord->width is updated as a side effect */
+static void
+_draw_chord (score_t *score, cairo_t *cr,
+ score_staff_t *staff, score_chord_t *chord)
+{
+ PangoRectangle ink_extents;
+ PangoRectangle logical_extents;
+ double total_staff_height;
+ PangoLayout *layout;
+ PangoFontDescription *font_description;
+
+ /* XXX: The staff should manage this height itself. */
+ total_staff_height = (staff->upper_ledger_lines * score->space_height +
+ score->staff_height +
+ staff->lower_ledger_lines * score->space_height);
+
+ cairo_save (cr);
+
+ font_description = pango_font_description_new ();
+ pango_font_description_set_family (font_description, "serif");
+ pango_font_description_set_absolute_size (font_description,
+ score->space_height * 3 * PANGO_SCALE);
+
+ layout = pango_cairo_create_layout (cr);
+ pango_layout_set_font_description (layout, font_description);
+ pango_layout_set_markup (layout, chord->name, -1);
+
+ pango_layout_line_get_pixel_extents (pango_layout_get_line (layout, 0),
+ &ink_extents, &logical_extents);
+
+ if (staff->clef == SCORE_CLEF_G)
+ cairo_move_to (cr, 0, - score->space_height * 0.5);
+ else
+ cairo_move_to (cr, 0, score->space_height * 0.5 + total_staff_height +
+ logical_extents.height);
+
+ pango_cairo_show_layout_line (cr, pango_layout_get_line (layout, 0));
+
+ g_object_unref (layout);
+ pango_font_description_free (font_description);
+
+ chord->width = logical_extents.width;
+
+ cairo_restore (cr);
+}
+
+/* Draw 'note' at its correct position on 'staff'.
+ * If the accidental of 'note' is not contained within the current
+ * key, then draw the accidental as well.
+ *
+ * As a special case, if the note's duration is 0, draw the accidental
+ * alone, regardless of the key. This is useful for drawing the
+ * accidentals of the key signature.
+ *
+ * Returns the width of the drawn glyphs.
+ */
+static double
+_draw_note (score_t *score, cairo_t *cr,
+ score_staff_t *staff, score_note_t *note)
+{
+ double line;
+ cairo_glyph_t note_glyph[2];
+ static double extend_factor = 0.25;
+ cairo_text_extents_t extents;
+ int num_glyphs = 0;
+
+ void _draw_ledger_line (double line, double offset, double width) {
+ cairo_move_to (cr, offset - extend_factor * width / 2.0,
+ score->space_height * line + score->line_width / 2.0);
+ cairo_rel_line_to (cr, (1 + extend_factor) * width, 0);
+ cairo_stroke (cr);
+ }
+
+ cairo_save (cr);
+
+ /* Move right so that X==0 is natural position for non-displaced
+ * noteheads.
+ */
+ cairo_translate (cr, score->space_height, 0);
+
+ /* Which line should the note appear on? Line 0 is the top line of
+ * the staff and increasing downwards. (Negative values indicate a
+ * 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_staff_pitch_to_line (staff, note->pitch);
+
+ cairo_select_font_face (cr, "Gonville-26", 0, 0);
+ cairo_set_font_size (cr, score->staff_height);
+
+ /* XXX: The hard-coded glyph indices here are very ugly. We should
+ * figure out how to lookup glyphs by name from this font. */
+ switch (PITCH_ACCIDENTAL (note->pitch)) {
+ case PITCH_ACCIDENTAL_DOUBLE_FLAT:
+ note_glyph[num_glyphs].index = 77;
+ break;
+ case PITCH_ACCIDENTAL_FLAT:
+ note_glyph[num_glyphs].index = 68;
+ break;
+ case PITCH_ACCIDENTAL_NATURAL:
+ note_glyph[num_glyphs].index = 101;
+ break;
+ case PITCH_ACCIDENTAL_SHARP:
+ note_glyph[num_glyphs].index = 134;
+ break;
+ case PITCH_ACCIDENTAL_DOUBLE_SHARP:
+ note_glyph[num_glyphs].index = 142;
+ break;
+ }
+
+ if (note->duration == 0 ||
+ ! scherzo_key_contains_pitch (&score->key, note->pitch))
+ {
+ note_glyph[num_glyphs].x = 0;
+
+ note_glyph[num_glyphs].y = score->space_height * line;
+
+ num_glyphs++;
+
+ cairo_glyph_extents (cr, note_glyph, num_glyphs, &extents);
+
+#define ACCIDENTAL_NOTE_SPACING (score->space_height * .15)
+
+ note_glyph[0].x = - (extents.width + ACCIDENTAL_NOTE_SPACING);
+ }
+
+ /* Support duration == 0 to draw accidental only */
+ if (note->duration)
+ {
+ switch (note->duration) {
+ case SCORE_DURATION_1:
+ note_glyph[num_glyphs].index = 127;
+ break;
+ case SCORE_DURATION_2:
+ note_glyph[num_glyphs].index = 85;
+ break;
+ case SCORE_DURATION_4:
+ case SCORE_DURATION_8:
+ case SCORE_DURATION_16:
+ case SCORE_DURATION_32:
+ case SCORE_DURATION_64:
+ case SCORE_DURATION_128:
+ default:
+ note_glyph[num_glyphs].index = 84;
+ }
+
+ note_glyph[num_glyphs].x = 0;
+ note_glyph[num_glyphs].y = score->space_height * line;
+
+ num_glyphs++;
+ }
+
+ cairo_glyph_extents (cr, note_glyph, num_glyphs, &extents);
+
+ if (line < 0 || line > 4) {
+ double offset, width;
+ int i;
+
+ offset = note_glyph[0].x + extents.x_bearing;
+ width = extents.width;
+
+ if (line < 0) {
+ for (i = -1; i >= line; i--)
+ _draw_ledger_line (i, offset, width);
+ } else {
+ for (i = 5; i <= line; i++)
+ _draw_ledger_line (i, offset, width);
+ }
+ }
+
+ cairo_set_source_rgb (cr,
+ note->color.r,
+ note->color.g,
+ note->color.b);
+ cairo_show_glyphs (cr, note_glyph, num_glyphs);
+
+ cairo_restore (cr);
+
+ return extents.width;
+}
+
+/* Draw the accidental from 'pitch' only (no notehead) at the correct
+ * position as if drawing a note at 'pitch'.
+ *
+ * Returns the width of the drawn glyph.
+ */
+static double
+_draw_accidental (score_t *score,
+ cairo_t *cr,
+ score_staff_t *staff,
+ pitch_t pitch)
+{
+ score_note_t note;
+
+ note.staff = staff;
+ note.pitch = pitch;
+
+ /* A duration of 0 indicates to draw only the accidental. */
+ note.duration = 0;
+
+ note.color.r = 0.0;
+ note.color.g = 0.0;
+ note.color.b = 0.0;
+
+ return _draw_note (score, cr, staff, ¬e);
+}
+
+static void
+_draw_key_signature (score_t *score, cairo_t *cr,
+ score_staff_t *staff)
+{
+ pitch_t pitch;
+ double width;
int i;
- cairo_glyph_t glyph;
+
+ /* These octave numbers are correct for treble clef. For bass
+ * clef, subtract two.
+ */
+ pitch_t sharps_order[] = {
+ PITCH_LITERAL (F, SHARP, 5),
+ PITCH_LITERAL (C, SHARP, 5),
+ PITCH_LITERAL (G, SHARP, 5),
+ PITCH_LITERAL (D, SHARP, 5),
+ PITCH_LITERAL (A, SHARP, 4),
+ PITCH_LITERAL (E, SHARP, 5),
+ PITCH_LITERAL (B, SHARP, 4)
+ };
+
+ pitch_t flats_order[] = {
+ PITCH_LITERAL (B, FLAT, 4),
+ PITCH_LITERAL (E, FLAT, 5),
+ PITCH_LITERAL (A, FLAT, 4),
+ PITCH_LITERAL (D, FLAT, 5),
+ PITCH_LITERAL (G, FLAT, 4),
+ PITCH_LITERAL (C, FLAT, 5),
+ PITCH_LITERAL (F, FLAT, 4),
+ };
+
+ for (i = 0; i < score->key.num_sharps; i++) {
+ pitch = sharps_order[i];
+
+ if (staff->clef == SCORE_CLEF_BASS)
+ pitch = pitch_lower_by_octaves (pitch, 2);
+
+ width = _draw_accidental (score, cr, staff, pitch);
+
+#define KEY_SIGNATURE_ACCIDENTAL_SPACING (score->space_height * .15)
+ cairo_translate (cr, ceil (width + KEY_SIGNATURE_ACCIDENTAL_SPACING), 0);
+ }
+
+ for (i = 0; i < score->key.num_flats; i++) {
+ pitch = flats_order[i];
+
+ if (staff->clef == SCORE_CLEF_BASS)
+ pitch = pitch_lower_by_octaves (pitch, 2);
+
+ width = _draw_accidental (score, cr, staff, pitch);
+
+ cairo_translate (cr, ceil (width + KEY_SIGNATURE_ACCIDENTAL_SPACING), 0);
+ }
+}
+
+static void
+_draw_staff (score_t *score, cairo_t *cr,
+ score_staff_t *staff, int staff_width)
+{
+ int i;
+ cairo_glyph_t clef_glyph;
+ cairo_text_extents_t clef_extents;
cairo_save (cr);
+ cairo_translate (cr, 0, staff->y_pos);
+
cairo_select_font_face (cr, "Gonville-26", 0, 0);
- /* XXX: This font size is a rough guess at best. We should figure
- * out to correctly measure, size, and place clefs. */
- cairo_set_font_size (cr, 24);
+ cairo_set_font_size (cr, score->staff_height);
+
+ /* Draw staff lines */
+ for (i = 0; i < 5; i++) {
+ cairo_move_to (cr, 0, i * score->space_height + score->line_width / 2.0);
+ cairo_rel_line_to (cr, staff_width, 0);
+ }
+
+ cairo_set_line_width (cr, score->line_width);
+
+ cairo_set_source_rgb (cr, 0.0, 0.0, 0.0); /* black */
+ cairo_stroke (cr);
+
+ /* Draw the clef */
/* XXX: The hard-coded glyph indices here are very ugly. We should
* figure out how to lookup glyphs by name from this font. */
- switch (clef) {
+ switch (staff->clef) {
case SCORE_CLEF_G:
default:
- glyph.index = 46;
- glyph.y = 3 * score->space_height;
+ clef_glyph.index = 46;
+ clef_glyph.y = 3 * score->space_height;
break;
case SCORE_CLEF_F:
- glyph.index = 45;
- glyph.y = 1 * score->space_height;
+ clef_glyph.index = 45;
+ clef_glyph.y = 1 * score->space_height;
break;
}
- glyph.x = 2;
+ clef_glyph.x = 3 * score->line_width;
+ clef_glyph.y += score->line_width / 2.0;
cairo_set_source_rgb (cr, 0.0, 0.0, 0.0); /* black */
- cairo_show_glyphs (cr, &glyph, 1);
+ cairo_show_glyphs (cr, &clef_glyph, 1);
- cairo_rectangle (cr,
- score->line_width / 2.0,
- score->line_width / 2.0,
- score->width - score->line_width,
- score->space_height * 4);
-
- for (i = 1; i < 4; i++) {
- cairo_move_to (cr, 0, i * score->space_height + score->line_width / 2.0);
- cairo_rel_line_to (cr, score->width, 0);
- }
+ /* Make space for clef */
+ cairo_glyph_extents (cr, &clef_glyph, 1, &clef_extents);
- cairo_set_line_width (cr, score->line_width);
+#define CLEF_KEY_SIGNATURE_SPACING (score->space_height * .75)
+ cairo_translate (cr, ceil (clef_extents.width +
+ CLEF_KEY_SIGNATURE_SPACING), 0);
- cairo_set_source_rgb (cr, 0.0, 0.0, 0.0); /* black */
- cairo_stroke (cr);
+ /* Draw the key signature */
+ _draw_key_signature (score, cr, staff);
+
+#define KEY_SIGNATURE_NOTE_SPACING (score->space_height)
+ cairo_translate (cr, ceil (KEY_SIGNATURE_NOTE_SPACING), 0);
+
+ /* Draw chord symbols */
+ cairo_save (cr);
+ {
+ for (i = 0; i < staff->num_chords; i++) {
+ _draw_chord (score, cr, staff, staff->chords[i]);
+ cairo_translate (cr, staff->chords[i]->width, 0.0);
+ }
+ }
+ cairo_restore (cr);
+
+ /* Draw notes */
+ for (i = 0; i < staff->num_notes; i++) {
+ _draw_note (score, cr, staff, staff->notes[i]);
+ /* Draw all notes concurrent for now (as a chord)
+ cairo_translate (cr, score->space_height * 2.0, 0);
+ */
+ }
cairo_restore (cr);
}
-static void
-_draw_grand_staff (score_t *score, cairo_t *cr)
+void
+score_draw (score_t *score, cairo_t *cr)
{
-#define BRACE_GLYPHS 1
- cairo_glyph_t brace;
- cairo_save (cr);
+ int i;
+ int staff_width = score->width;
+ int staff_y_pos;
- /* Brace test */
- cairo_select_font_face (cr, "Gonville-Brace", 0, 0);
+ if (score->num_staves == 0)
+ return;
- /* XXX: This font size (in conjunction with the glyph selection)
- * is a rough guess at best. We should figure out how the brace
- * font is intended to be used and actually measure to find the
- * correctly sized glyph. */
- cairo_set_font_size (cr, 40);
+ cairo_save (cr);
- cairo_translate (cr, 5, 0);
- score->width -= 5;
+ /* Before drawing anything, position each staff based on the size
+ * of each (including ledger lines) */
+ staff_y_pos = 0;
+ for (i = 0; i < score->num_staves; i++) {
+ score_staff_t *staff = score->staves[i];
+ staff_y_pos += staff->upper_ledger_lines * score->space_height;
+ staff->y_pos = staff_y_pos;
+ staff_y_pos += (score->staff_height +
+ staff->lower_ledger_lines * score->space_height +
+ score->staff_height);
+ }
- /* XXX: This hard-coded glyph index is pretty ugly. We should
- * figure out how to lookup the glyph we want, (though, as it
- * turns out, this brace font pretty much just has numbered glyph
- * names for different sizes, so it wouldn't be all that different
- * than just the bare index here). */
- brace.index = 185;
- brace.x = 0;
- brace.y = score->staff_height * 1.5;
+ if (score->num_braces)
+ {
+ /* Initialize to keep the compiler quiet. */
+ int brace_width = 0;
- cairo_set_source_rgb (cr, 0.0, 0.0, 0.0); /* black */
- cairo_show_glyphs (cr, &brace, 1);
+ for (i = 0; i < score->num_braces; i++)
+ _draw_brace (score, cr, score->braces[i], &brace_width);
- cairo_translate (cr, 2, 0);
- score->width -= 2;
+ /* Subtract space for brace itself */
+ cairo_translate (cr, brace_width, 0);
+ staff_width -= brace_width;
+
+ /* As well as some padding */
+ cairo_translate (cr, 2, 0);
+ staff_width -= 2;
+ }
/* Vertical lines at each end */
cairo_rectangle (cr,
score->line_width / 2.0,
- score->line_width / 2.0,
- score->width - score->line_width,
- score->staff_height * 3);
+ score->staves[0]->y_pos + score->line_width / 2.0,
+ staff_width - score->line_width,
+ score->staves[score->num_staves-1]->y_pos + score->staff_height - score->staves[0]->y_pos);
cairo_set_source_rgb (cr, 0.0, 0.0, 0.0); /* black */
cairo_set_line_width (cr, score->line_width);
cairo_stroke (cr);
- /* Top staff */
- _draw_staff (score, cr, SCORE_CLEF_G);
-
- /* Bottom staff */
- cairo_translate (cr, 0, score->staff_height * 2);
- _draw_staff (score, cr, SCORE_CLEF_F);
+ for (i = 0; i < score->num_staves; i++) {
+ score_staff_t *staff = score->staves[i];
+ _draw_staff (score, cr, staff, staff_width);
+ }
cairo_restore (cr);
}
void
-score_draw (score_t *score, cairo_t *cr)
+score_add_brace (score_t *score, int staves)
+{
+ score_brace_t *brace;
+
+ brace = talloc (score, score_brace_t);
+ if (brace == NULL)
+ return;
+
+ brace->first_staff = score->num_staves;
+ brace->num_staves = staves;
+
+ score->num_braces++;
+ score->braces = talloc_realloc (score,
+ score->braces,
+ score_brace_t*,
+ score->num_braces);
+ if (score->braces == NULL) {
+ score->num_braces = 0;
+ return;
+ }
+
+ score->braces[score->num_braces - 1] = brace;
+
+}
+
+score_staff_t *
+score_add_staff (score_t *score, score_clef_t clef)
+{
+ score_staff_t *staff;
+
+ staff = talloc (score, score_staff_t);
+ if (staff == NULL)
+ return NULL;
+
+ staff->clef = clef;
+
+ staff->notes = NULL;
+ staff->num_notes = 0;
+
+ staff->chords = NULL;
+ staff->num_chords = 0;
+
+ staff->upper_ledger_lines = 0;
+ staff->lower_ledger_lines = 0;
+
+ score->num_staves++;
+ score->staves = talloc_realloc (score,
+ score->staves,
+ score_staff_t*,
+ score->num_staves);
+ if (score->staves == NULL) {
+ score->num_staves = 0;
+ return NULL;
+ }
+
+ score->staves[score->num_staves - 1] = staff;
+
+ return staff;
+}
+
+score_chord_t *
+score_add_chord (score_staff_t *staff,
+ const char *name)
+{
+ score_chord_t *chord;
+
+ chord = talloc (staff, score_chord_t);
+ if (chord == NULL)
+ return NULL;
+
+ talloc_steal (chord, name);
+
+ chord->staff = staff;
+ chord->name = talloc_strdup (chord, name);
+
+ /* The width will get set correctly the first time _draw_chord is
+ * called. */
+ chord->width = 0.0;
+
+ staff->num_chords++;
+ staff->chords = talloc_realloc (staff,
+ staff->chords,
+ score_chord_t*,
+ staff->num_chords);
+ if (staff->chords == NULL) {
+ staff->num_chords = 0;
+ return NULL;
+ }
+
+ staff->chords[staff->num_chords - 1] = chord;
+
+ return chord;
+}
+
+void
+score_staff_remove_chords (score_staff_t *staff)
+{
+ talloc_free (staff->chords);
+ staff->chords = NULL;
+
+ staff->num_chords = 0;
+}
+
+void
+score_remove_chords (score_t *score)
{
- _draw_grand_staff (score, cr);
+ int i;
+
+ for (i = 0; i < score->num_staves; i++)
+ score_staff_remove_chords (score->staves[i]);
+}
+
+void
+score_staff_add_note (score_staff_t *staff,
+ pitch_t pitch,
+ score_duration_t duration)
+{
+ score_note_t *note;
+ double line;
+ int i;
+
+ /* Return existing note if already present. */
+ for (i = 0; i < staff->num_notes; i++) {
+ note = staff->notes[i];
+ if (note->pitch == pitch &&
+ note->duration == duration)
+ {
+ return;
+ }
+ }
+
+ note = talloc (staff, score_note_t);
+ if (note == NULL)
+ return;
+
+ note->staff = staff;
+ note->pitch = pitch;
+ note->duration = duration;
+
+ note->color.r = 0.0;
+ note->color.g = 0.0;
+ note->color.b = 0.0;
+
+ line = _score_staff_pitch_to_line (staff, note->pitch);
+ if (line < 0) {
+ int lines = (int) (- line);
+ if (lines > staff->upper_ledger_lines)
+ staff->upper_ledger_lines = lines;
+ } else {
+ int lines = (int) (line - 4);
+ if (lines > staff->lower_ledger_lines)
+ staff->lower_ledger_lines = lines;
+ }
+
+ staff->num_notes++;
+ staff->notes = talloc_realloc (staff,
+ staff->notes,
+ score_note_t*,
+ staff->num_notes);
+ if (staff->notes == NULL) {
+ staff->num_notes = 0;
+ return;
+ }
+
+ staff->notes[staff->num_notes - 1] = note;
+}
+
+void
+score_add_note (score_t *score, pitch_t pitch, score_duration_t duration)
+{
+ score_staff_t *staff, *nearest_staff = NULL;
+ double distance, nearest_distance = 0.0;
+ int i;
+
+ /* Nothing to do if we have no staff, (there's no place to add a note) . */
+ if (score->num_staves == 0)
+ return;
+
+ /* 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;
+ }
+ }
+
+ score_staff_add_note (nearest_staff, pitch, duration);
+}
+
+void
+score_staff_remove_notes (score_staff_t *staff)
+{
+ talloc_free (staff->notes);
+ staff->notes = NULL;
+ staff->num_notes = 0;
+
+ staff->upper_ledger_lines = 0;
+ staff->lower_ledger_lines = 0;
+}
+
+void
+score_remove_notes (score_t *score)
+{
+ int i;
+
+ for (i = 0; i < score->num_staves; i++)
+ score_staff_remove_notes (score->staves[i]);
}
projects / scherzo / blobdiff