{
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
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 */
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;
{
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
* than just the bare index here). */
brace_glyph.index = 300;
brace_glyph.x = 0;
- brace_glyph.y = score->staff_height * (brace->first_staff + (2 * brace->num_staves - 1) / 2.0) + 1;
+ 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, (score->staff_height * 3) / 3.85);
+ cairo_set_font_size (cr, (bottom - top) / 3.85);
cairo_glyph_extents (cr, &brace_glyph, 1, &brace_extents);
return c_line - (name - SCORE_PITCH_NAME_C) / 2.0 - 3.5 * (note->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)
+{
+ cairo_text_extents_t chord_extents;
+ double total_staff_height;
+
+ /* 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);
+
+ cairo_text_extents (cr, chord->name, &chord_extents);
+
+ cairo_select_font_face (cr, "serif", 0, 0);
+ cairo_set_font_size (cr, score->space_height * 3);
+
+ 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 + chord_extents.y_bearing);
+
+ cairo_show_text (cr, chord->name);
+
+ chord->width = chord_extents.x_advance;
+
+ cairo_restore (cr);
+}
+
static void
_draw_note (score_t *score, cairo_t *cr,
score_staff_t *staff, score_note_t *note)
{
double line;
- cairo_glyph_t note_glyph;
+ 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
/* XXX: The hard-coded glyph indices here are very ugly. We should
* figure out how to lookup glyphs by name from this font. */
+ switch (SCORE_PITCH_ACCIDENTAL (note->pitch)) {
+ case SCORE_PITCH_ACCIDENTAL_DOUBLE_FLAT:
+ note_glyph[num_glyphs].index = 77;
+ break;
+ case SCORE_PITCH_ACCIDENTAL_FLAT:
+ note_glyph[num_glyphs].index = 68;
+ break;
+ case SCORE_PITCH_ACCIDENTAL_NATURAL:
+ note_glyph[num_glyphs].index = 101;
+ break;
+ case SCORE_PITCH_ACCIDENTAL_SHARP:
+ note_glyph[num_glyphs].index = 134;
+ break;
+ case SCORE_PITCH_ACCIDENTAL_DOUBLE_SHARP:
+ note_glyph[num_glyphs].index = 142;
+ break;
+ }
+
+ if (SCORE_PITCH_ACCIDENTAL (note->pitch) != SCORE_PITCH_ACCIDENTAL_NATURAL)
+ {
+ 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);
+ }
+
switch (note->duration) {
case SCORE_DURATION_1:
- note_glyph.index = 127;
+ note_glyph[num_glyphs].index = 127;
break;
case SCORE_DURATION_2:
- note_glyph.index = 85;
+ note_glyph[num_glyphs].index = 85;
break;
case SCORE_DURATION_4:
case SCORE_DURATION_8:
case SCORE_DURATION_64:
case SCORE_DURATION_128:
default:
- note_glyph.index = 84;
+ note_glyph[num_glyphs].index = 84;
}
- note_glyph.x = 0;
- note_glyph.y = score->space_height * line + score->line_width / 2.0;
+ note_glyph[num_glyphs].x = 0;
+ note_glyph[num_glyphs].y = score->space_height * line;
- cairo_set_source_rgb (cr, 0.0, 0.0, 0.0); /* black */
- cairo_show_glyphs (cr, ¬e_glyph, 1);
+ num_glyphs++;
+
+ if (line < 0 || line > 4) {
+ double offset, width;
+ int i;
+
+ cairo_glyph_extents (cr, note_glyph, num_glyphs, &extents);
+ 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);
}
cairo_save (cr);
+ cairo_translate (cr, 0, staff->y_pos);
+
cairo_select_font_face (cr, "Gonville-26", 0, 0);
cairo_set_font_size (cr, score->staff_height);
break;
}
clef_glyph.x = 3 * score->line_width;
- clef_glyph.y += 1;
+ clef_glyph.y += score->line_width / 2.0;
cairo_set_source_rgb (cr, 0.0, 0.0, 0.0); /* black */
cairo_show_glyphs (cr, &clef_glyph, 1);
/* Make space for clef before drawing notes */
cairo_translate (cr, (int) (4 * score->space_height), 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]);
{
int i;
int staff_width = score->width;
+ int staff_y_pos;
+
+ if (score->num_staves == 0)
+ return;
cairo_save (cr);
+ /* 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);
+ }
+
if (score->num_braces)
{
int brace_width;
/* Vertical lines at each end */
cairo_rectangle (cr,
score->line_width / 2.0,
- score->line_width / 2.0,
+ score->staves[0]->y_pos + score->line_width / 2.0,
staff_width - score->line_width,
- score->staff_height * 3);
+ 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);
for (i = 0; i < score->num_staves; i++) {
- _draw_staff (score, cr, score->staves[i], staff_width);
- cairo_translate (cr, 0, 2 * score->staff_height);
+ score_staff_t *staff = score->staves[i];
+ _draw_staff (score, cr, staff, staff_width);
}
cairo_restore (cr);
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,
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;
+
+ 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_remove_chord (score_chord_t *chord)
+{
+ score_staff_t *staff = chord->staff;
+ int i;
+
+ for (i = 0; i < staff->num_chords; i++)
+ if (staff->chords[i] == chord)
+ break;
+
+ if (i == staff->num_chords)
+ return;
+
+ if (i < staff->num_chords - 1)
+ {
+ memmove (staff->chords + i,
+ staff->chords + i + 1,
+ (staff->num_chords - 1 - i) * sizeof (score_chord_t *));
+ }
+
+ staff->num_chords -= 1;
+}
+
score_note_t *
-score_staff_add_note (score_staff_t *staff,
- score_pitch_t pitch,
- int octave,
- score_duration_t duration)
+score_add_note (score_staff_t *staff,
+ score_pitch_t pitch,
+ int octave,
+ 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->octave == octave &&
+ note->duration == duration)
+ {
+ return note;
+ }
+ }
note = talloc (staff, score_note_t);
if (note == NULL)
return NULL;
+ 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);
+ 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,
}
void
-score_staff_remove_note (score_staff_t *staff, score_note_t *note)
+score_remove_note (score_note_t *note)
{
+ score_staff_t *staff = note->staff;
int i;
for (i = 0; i < staff->num_notes; i++)
}
staff->num_notes -= 1;
+
+ if (staff->num_notes == 0) {
+ staff->upper_ledger_lines = 0;
+ staff->lower_ledger_lines = 0;
+ }
+}
+
+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 *
projects / scherzo / blobdiff