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import time
from typing import TYPE_CHECKING
from qtpy.QtWidgets import QWidget
from qtpy.QtGui import QPalette, QIcon, QColor, QKeySequence
from qtpy.QtCore import Slot # type:ignore
from patshared import TransportPosition
from ..bases.elements import ToolDisplayed, TransportViewMode
from ..ui.transport_bar import Ui_Form as TransportUiForm
if TYPE_CHECKING:
from patchbay_manager import PatchbayManager
def is_dark_theme(widget: QWidget) -> bool:
return bool(
widget.palette().brush(
QPalette.ColorGroup.Active,
QPalette.ColorRole.WindowText).color().lightness()
> 128)
class BarWidgetTransport(QWidget):
def __init__(self, parent):
super().__init__(parent)
self.ui = TransportUiForm()
self.ui.setupUi(self)
self.ui.toolButtonPlayPause.clicked.connect(self._play_clicked)
self.ui.toolButtonStop.clicked.connect(self._stop_clicked)
self.ui.toolButtonRewind.clicked.connect(self._rewind_clicked)
self.ui.toolButtonForward.clicked.connect(self._forward_clicked)
self.ui.labelTime.transport_view_changed.connect(
self._transport_view_changed)
self._samplerate = 48000
self.mng: 'PatchbayManager' = None # type:ignore
self._last_transport_pos = TransportPosition(
0, False, False, 0, 0, 0, 120.00)
self.ui.toolButtonPlayPause.setShortcut(QKeySequence(' ')) # type:ignore
self._fw_clicked_last_time = 0
self._fw_click_started_at = 0
self._bw_clicked_last_time = 0
self._bw_click_started_at = 0
dark = is_dark_theme(self)
# set theme
app_bg = self.ui.labelTempo.palette().brush(
QPalette.ColorGroup.Active, QPalette.ColorRole.Button).color() # type:ignore
scheme = 'dark' if dark else 'light'
self._icon_play = QIcon(
f':/transport/{scheme}/media-playback-start.svg')
self._icon_pause = QIcon(
f':/transport/{scheme}/media-playback-pause.svg')
self.ui.toolButtonRewind.setIcon(
QIcon(f':/transport/{scheme}/media-seek-backward.svg')) # type:ignore
self.ui.toolButtonForward.setIcon(
QIcon(f':/transport/{scheme}/media-seek-forward.svg')) # type:ignore
self.ui.toolButtonPlayPause.setIcon(self._icon_play) # type:ignore
self.ui.toolButtonStop.setIcon(
QIcon(f':/transport/{scheme}/media-playback-stop.svg')) # type:ignore
bg = QColor(app_bg)
more_gray = 20 if dark else -30
bg.setRed(max(min(app_bg.red() + more_gray, 255), 0))
bg.setGreen(max(min(app_bg.green() + more_gray, 255), 0))
bg.setBlue(max(min(app_bg.blue() + more_gray, 255), 0))
background = bg.name()
round_side = 'left'
for button in (self.ui.toolButtonRewind, self.ui.toolButtonPlayPause,
self.ui.toolButtonForward, self.ui.toolButtonStop):
if button is self.ui.toolButtonForward:
round_side = "right"
button.setStyleSheet(
f"QToolButton{{background:{background}; border:none;"
f"border-top-{round_side}-radius:4px;"
f"border-bottom-{round_side}-radius:4px}}")
count_bg = self.palette().base().color().name()
self.ui.labelTime.setStyleSheet(
f"QLabel{{background:{count_bg}; border: 2px solid {background}}}")
@Slot(bool)
def _play_clicked(self, play: bool):
if self.mng is not None:
self.mng.transport_play_pause(play)
@Slot()
def _stop_clicked(self):
if self.mng is not None:
self.mng.transport_stop()
@Slot()
def _rewind_clicked(self):
if self.mng is not None:
now = time.time()
move = 1.0 * self._samplerate
if now - self._bw_clicked_last_time < 0.400:
move = ((1.0 + (now - self._bw_click_started_at) ** 1.5)
* self._samplerate)
else:
self._bw_click_started_at = now
self.mng.transport_relocate(
max(0, int(self._last_transport_pos.frame - move)))
self._bw_clicked_last_time = now
@Slot()
def _forward_clicked(self):
if self.mng is not None:
now = time.time()
move = 1.0 * self._samplerate
if now - self._fw_clicked_last_time < 0.400:
move = ((1.0 + (now - self._fw_click_started_at) ** 1.5)
* self._samplerate)
else:
self._fw_click_started_at = now
self.mng.transport_relocate(
int(self._last_transport_pos.frame + move))
self._fw_clicked_last_time = now
@Slot()
def _transport_view_changed(self):
self.refresh_transport(self._last_transport_pos)
def refresh_transport(self, transport_pos: TransportPosition):
self.ui.toolButtonPlayPause.setChecked(transport_pos.rolling)
if transport_pos.rolling:
self.ui.toolButtonPlayPause.setIcon(self._icon_pause) # type:ignore
else:
self.ui.toolButtonPlayPause.setIcon(self._icon_play) # type:ignore
if (self.ui.labelTime.transport_view_mode
is not TransportViewMode.FRAMES):
# switch the view mode in case beats info appears/disappears
if (transport_pos.valid_bbt
and not self._last_transport_pos.valid_bbt):
self.ui.labelTime.transport_view_mode = \
TransportViewMode.BEAT_BAR_TICK
elif (not transport_pos.valid_bbt
and self._last_transport_pos.valid_bbt):
self.ui.labelTime.transport_view_mode = \
TransportViewMode.HOURS_MINUTES_SECONDS
if (self.ui.labelTime.transport_view_mode
is TransportViewMode.HOURS_MINUTES_SECONDS):
# if the transport time is during the first second
# but not at 0, we display something else to show
# that transport is rolling after press play.
# If it is not rolling, it shows that transport is not
# exactly at start.
if 0 < transport_pos.frame < self._samplerate / 2:
self.ui.labelTime.setText("00:00:0_")
elif 0 < transport_pos.frame < self._samplerate:
self.ui.labelTime.setText("00:00:0-")
else:
time = transport_pos.frame // self._samplerate
secs = time % 60
mins = (time / 60) % 60
hrs = (time / 3600) % 60
self.ui.labelTime.setText(
"%02i:%02i:%02i" % (hrs, mins, secs))
elif (self.ui.labelTime.transport_view_mode
is TransportViewMode.FRAMES):
frame1 = transport_pos.frame % 1000
frame2 = int(transport_pos.frame / 1000) % 1000
frame3 = int(transport_pos.frame / 1000000) % 1000
self.ui.labelTime.setText(
"%03i'%03i'%03i" % (frame3, frame2, frame1))
elif (self.ui.labelTime.transport_view_mode
is TransportViewMode.BEAT_BAR_TICK):
if transport_pos.valid_bbt:
self.ui.labelTime.setText(
"%03i|%02i|%04i" % (transport_pos.bar,
transport_pos.beat,
transport_pos.tick))
else:
self.ui.labelTime.setText("???|??|????")
if transport_pos.valid_bbt:
if (int(transport_pos.beats_per_minutes)
== transport_pos.beats_per_minutes):
self.ui.labelTempo.setText(
f"{int(transport_pos.beats_per_minutes)} BPM")
else:
self.ui.labelTempo.setText(
'%.2f BPM' % transport_pos.beats_per_minutes)
else:
self.ui.labelTempo.setText('')
self.ui.toolButtonRewind.setEnabled(transport_pos.frame != 0)
self._last_transport_pos = transport_pos
def set_patchbay_manager(self, mng: 'PatchbayManager'):
self.mng = mng
def set_samplerate(self, samplerate: int):
self._samplerate = samplerate
def set_jack_running(self, running: bool):
if not running:
self.ui.toolButtonRewind.setVisible(False)
self.ui.labelTime.setVisible(False)
self.ui.toolButtonForward.setVisible(False)
self.ui.toolButtonPlayPause.setVisible(False)
self.ui.toolButtonStop.setVisible(False)
self.ui.labelTempo.setVisible(False)
def change_tools_displayed(self, tools_displayed: ToolDisplayed):
has_clock = bool(tools_displayed & ToolDisplayed.TRANSPORT_CLOCK)
has_play_stop = bool(
tools_displayed & ToolDisplayed.TRANSPORT_PLAY_STOP)
self.ui.toolButtonRewind.setVisible(has_clock)
self.ui.labelTime.setVisible(has_clock)
self.ui.toolButtonForward.setVisible(has_clock)
self.ui.toolButtonPlayPause.setVisible(has_play_stop)
self.ui.toolButtonStop.setVisible(has_play_stop)
self.ui.labelTempo.setVisible(
bool(tools_displayed & ToolDisplayed.TRANSPORT_TEMPO))
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