ardour/livetrax
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Prepare key-binding display

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This commit is contained in:
Robin Gareus 2019-10-24 05:13:13 +02:00
parent 7f11d13c8a
commit 406bd1bf07
Signed by: rgareus
GPG Key ID: A090BCE02CF57F04
2 changed files with 50 additions and 4 deletions
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53
gtk2_ardour/gtk_pianokeyboard.c
View File

@ -70,8 +70,9 @@ enum {
static guint piano_keyboard_signals[LAST_SIGNAL] = { 0 };
static void
draw_keyboard_cue (PianoKeyboard* pk, cairo_t* cr)
draw_keyboard_cue (PianoKeyboard* pk, cairo_t* cr, int note)
{
#if 0
int w = pk->notes[0].w;
int h = pk->notes[0].h;
@ -94,6 +95,48 @@ draw_keyboard_cue (PianoKeyboard* pk, cairo_t* cr)
cairo_move_to (cr, pk->notes[first_note_in_higher_row].x + 3, h - 9);
cairo_line_to (cr, pk->notes[last_note_in_higher_row].x + w - 3, h - 9);
cairo_stroke (cr);
#endif
int nkey = note - pk->octave * 12;
if (nkey < 0 || nkey >= NNOTES) {
return;
}
if (!pk->note_bindings[nkey]) {
return;
}
// TODO Cache PangoFontDescription for each expose call.
// TODO display above note/octave label if both are visible
int is_white = pk->notes[note].white;
int x = pk->notes[note].x;
int w = pk->notes[note].w;
int h = pk->notes[note].h;
int tw, th;
char buf[32];
sprintf (buf, "ArdourMono %dpx", MAX (8, MIN (20, w / 2 + 3)));
PangoFontDescription* font = pango_font_description_from_string (buf);
snprintf(buf, 16, "%lc", gdk_keyval_to_unicode (gdk_keyval_to_upper (gdk_keyval_from_name (pk->note_bindings[nkey]))));
PangoLayout* pl = pango_cairo_create_layout (cr);
pango_layout_set_font_description (pl, font);
pango_layout_set_text (pl, buf, -1);
pango_layout_set_alignment (pl, PANGO_ALIGN_LEFT);
pango_layout_get_pixel_size (pl, &tw, &th);
if (is_white) {
cairo_set_source_rgba (cr, 0.0, 0.0, 0.5, 1.0);
} else {
cairo_set_source_rgba (cr, 1.0, 1.0, 0.5, 1.0);
}
if (tw < w) {
cairo_save (cr);
cairo_move_to (cr, x + (w - tw) / 2, h - th - 5);
pango_cairo_show_layout (cr, pl);
cairo_restore (cr);
}
g_object_unref (pl);
pango_font_description_free (font);
}
static void
@ -155,10 +198,9 @@ draw_note (PianoKeyboard* pk, cairo_t* cr, int note)
cairo_stroke (cr);
if (pk->enable_keyboard_cue) {
draw_keyboard_cue (pk, cr);
draw_keyboard_cue (pk, cr, note);
}
if (pk->print_note_label && (note % 12) == 0) {
else if (pk->print_note_label && (note % 12) == 0) {
int tw, th;
char buf[32];
sprintf (buf, "ArdourMono %dpx", MAX (10, MIN (20, MIN (w / 2 + 3, h / 7))));
@ -304,6 +346,7 @@ bind_key (PianoKeyboard* pk, const char* key, int note)
assert (pk->key_bindings != NULL);
g_hash_table_insert (pk->key_bindings, (const gpointer)key, (gpointer) ((intptr_t)note));
pk->note_bindings[note] = key;
}
static void
@ -312,6 +355,7 @@ clear_notes (PianoKeyboard* pk)
assert (pk->key_bindings != NULL);
g_hash_table_remove_all (pk->key_bindings);
memset (pk->note_bindings, 0, sizeof (pk->note_bindings));
}
static void
@ -1083,4 +1127,5 @@ piano_keyboard_set_keyboard_layout (PianoKeyboard* pk, const char* layout)
} else {
assert (0);
}
gtk_widget_queue_draw (GTK_WIDGET (pk));
}

1
gtk2_ardour/gtk_pianokeyboard.h
View File

@ -69,6 +69,7 @@ struct _PianoKeyboard {
gboolean monophonic;
struct PKNote notes[NNOTES];
GHashTable* key_bindings; /**< Table used to translate from PC keyboard character to MIDI note number. */
char* note_bindings[NNOTES]; /**< Table to translate from MIDI note number to PC keyboard character. */
int min_velocity;
int max_velocity;
int key_velocity;