static gboolean
piano_keyboard_expose(GtkWidget *widget, GdkEventExpose *event)
{
int i;
PianoKeyboard *pk = PIANO_KEYBOARD(widget);
cairo_t* cr = gdk_cairo_create (GDK_DRAWABLE (GTK_WIDGET(pk)->window));
gdk_cairo_region (cr, event->region);
cairo_clip (cr);
for (i = 0; i < NNOTES; i++) {
GdkRectangle r;
r.x = pk->notes[i].x;
r.y = 0;
r.width = pk->notes[i].w;
r.height = pk->notes[i].h;
switch (gdk_region_rect_in (event->region, &r)) {
case GDK_OVERLAP_RECTANGLE_PART:
case GDK_OVERLAP_RECTANGLE_IN:
draw_note (pk, cr, i);
break;
default:
break;
}
}
cairo_destroy (cr);
return TRUE;
}
static gint
keyboard_event_handler(GtkWidget *mk, GdkEventKey *event, gpointer ignored)
{
int note;
char *key;
guint keyval;
GdkKeymapKey kk;
PianoKeyboard *pk = PIANO_KEYBOARD(mk);
(void) ignored;
/* We're not using event->keyval, because we need keyval with level set to 0.
E.g. if user holds Shift and presses '7', we want to get a '7', not '&'. */
kk.keycode = event->hardware_keycode;
kk.level = 0;
kk.group = 0;
keyval = gdk_keymap_lookup_key(NULL, &kk);
key = gdk_keyval_name(gdk_keyval_to_lower(keyval));
if (key == NULL) {
g_message("gtk_keyval_name() returned NULL; please report this.");
return FALSE;
}
note = key_binding(pk, key);
if (note < 0) {
/* Key was not bound. Maybe it's one of the keys handled in jack-keyboard.c. */
return FALSE;
}
if (note == 128) {
if (event->type == GDK_KEY_RELEASE) {
rest (pk);
}
return TRUE;
}
note += pk->octave * 12;
assert(note >= 0);
assert(note < NNOTES);
if (event->type == GDK_KEY_PRESS) {
press_key(pk, note);
} else if (event->type == GDK_KEY_RELEASE) {
release_key(pk, note);
}
return TRUE;
}
static void
piano_keyboard_size_allocate(GtkWidget *widget, GtkAllocation *allocation)
{
/* XXX: Are these two needed? */
g_return_if_fail(widget != NULL);
g_return_if_fail(allocation != NULL);
widget->allocation = *allocation;
recompute_dimensions(PIANO_KEYBOARD(widget));
if (GTK_WIDGET_REALIZED(widget)) {
gdk_window_move_resize (widget->window, allocation->x, allocation->y, allocation->width, allocation->height);
}
}
GtkWidget *
piano_keyboard_new(void)
{
GtkWidget *widget = (GtkWidget*)gtk_type_new(piano_keyboard_get_type());
PianoKeyboard *pk = PIANO_KEYBOARD(widget);
pk->maybe_stop_sustained_notes = 0;
pk->sustain_new_notes = 0;
pk->enable_keyboard_cue = 0;
pk->octave = 4;
pk->note_being_pressed_using_mouse = -1;
memset((void *)pk->notes, 0, sizeof(struct PKNote) * NNOTES);
pk->key_bindings = g_hash_table_new(g_str_hash, g_str_equal);
bind_keys_qwerty(pk);
return widget;
}
