mirror of
https://github.com/jeertmans/manim-slides.git
synced 2025-05-17 18:55:53 +08:00
5b6f5eb1e4
* Relies on Pixel Format instead of Size * chore(lib): remove deprecated warning * chore(deps): update lockfiles * chore(lib): cleanup code * chore(ci): run fmt * chore: update changelog * chore: typo * chore(docs): remove ref. to black screen * fix(deps): issue on Windows --------- Co-authored-by: PeculiarProgrammer <179261820+PeculiarProgrammer@users.noreply.github.com>
583 lines
18 KiB
Python
583 lines
18 KiB
Python
from datetime import datetime
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from pathlib import Path
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from typing import Optional
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from qtpy.QtCore import Qt, QTimer, QUrl, Signal, Slot
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from qtpy.QtGui import QCloseEvent, QIcon, QKeyEvent, QScreen
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from qtpy.QtMultimedia import QAudioOutput, QMediaPlayer, QVideoFrame
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from qtpy.QtMultimediaWidgets import QVideoWidget
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from qtpy.QtWidgets import (
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QHBoxLayout,
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QLabel,
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QMainWindow,
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QVBoxLayout,
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QWidget,
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)
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from ..config import Config, PresentationConfig, SlideConfig
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from ..logger import logger
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from ..resources import * # noqa: F403
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WINDOW_NAME = "Manim Slides"
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class Info(QWidget): # type: ignore[misc]
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key_press_event: Signal = Signal(QKeyEvent)
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close_event: Signal = Signal(QCloseEvent)
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def __init__(
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self,
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*,
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full_screen: bool,
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aspect_ratio_mode: Qt.AspectRatioMode,
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screen: Optional[QScreen],
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) -> None:
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super().__init__()
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if screen:
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self.setScreen(screen)
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self.move(screen.geometry().topLeft())
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if full_screen:
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self.setWindowState(Qt.WindowFullScreen)
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layout = QHBoxLayout()
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# Current slide view
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left_layout = QVBoxLayout()
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left_layout.addWidget(
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QLabel("Current slide"),
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alignment=Qt.AlignmentFlag.AlignBottom | Qt.AlignmentFlag.AlignHCenter,
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)
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main_video_widget = QVideoWidget()
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main_video_widget.setAspectRatioMode(aspect_ratio_mode)
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main_video_widget.setFixedSize(720, 480)
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self.video_sink = main_video_widget.videoSink()
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left_layout.addWidget(main_video_widget)
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# Current slide information
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self.scene_label = QLabel()
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self.slide_label = QLabel()
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self.start_time = datetime.now()
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self.time_label = QLabel()
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self.elapsed_label = QLabel("00h00m00s")
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self.timer = QTimer()
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self.timer.start(1000) # every second
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self.timer.timeout.connect(self.update_time)
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bottom_left_layout = QHBoxLayout()
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bottom_left_layout.addWidget(
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QLabel("Scene:"),
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alignment=Qt.AlignmentFlag.AlignTop | Qt.AlignmentFlag.AlignRight,
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)
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bottom_left_layout.addWidget(
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self.scene_label,
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alignment=Qt.AlignmentFlag.AlignTop | Qt.AlignmentFlag.AlignLeft,
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)
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bottom_left_layout.addWidget(
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QLabel("Slide:"),
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alignment=Qt.AlignmentFlag.AlignTop | Qt.AlignmentFlag.AlignRight,
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)
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bottom_left_layout.addWidget(
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self.slide_label,
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alignment=Qt.AlignmentFlag.AlignTop | Qt.AlignmentFlag.AlignLeft,
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)
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bottom_left_layout.addWidget(
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QLabel("Time:"),
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alignment=Qt.AlignmentFlag.AlignTop | Qt.AlignmentFlag.AlignRight,
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)
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bottom_left_layout.addWidget(
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self.time_label,
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alignment=Qt.AlignmentFlag.AlignTop | Qt.AlignmentFlag.AlignLeft,
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)
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bottom_left_layout.addWidget(
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QLabel("Elapsed:"),
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alignment=Qt.AlignmentFlag.AlignTop | Qt.AlignmentFlag.AlignRight,
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)
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bottom_left_layout.addWidget(
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self.elapsed_label,
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alignment=Qt.AlignmentFlag.AlignTop | Qt.AlignmentFlag.AlignLeft,
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)
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left_layout.addLayout(bottom_left_layout)
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layout.addLayout(left_layout)
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layout.addSpacing(20)
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# Next slide preview
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right_layout = QVBoxLayout()
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right_layout.addWidget(
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QLabel("Next slide"),
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alignment=Qt.AlignmentFlag.AlignBottom | Qt.AlignmentFlag.AlignHCenter,
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)
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next_video_widget = QVideoWidget()
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next_video_widget.setAspectRatioMode(aspect_ratio_mode)
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next_video_widget.setFixedSize(360, 240)
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self.next_media_player = QMediaPlayer()
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self.next_media_player.setVideoOutput(next_video_widget)
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self.next_media_player.setLoops(-1)
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right_layout.addWidget(next_video_widget)
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# Notes
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self.slide_notes = QLabel()
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self.slide_notes.setWordWrap(True)
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self.slide_notes.setTextFormat(Qt.TextFormat.MarkdownText)
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self.slide_notes.setFixedWidth(360)
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right_layout.addWidget(
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self.slide_notes,
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alignment=Qt.AlignmentFlag.AlignTop | Qt.AlignmentFlag.AlignLeft,
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)
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layout.addLayout(right_layout)
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widget = QWidget()
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widget.setLayout(layout)
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main_layout = QVBoxLayout()
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main_layout.addWidget(widget, alignment=Qt.AlignmentFlag.AlignCenter)
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self.setLayout(main_layout)
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@Slot()
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def update_time(self) -> None:
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now = datetime.now()
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seconds = (now - self.start_time).total_seconds()
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hours, seconds = divmod(seconds, 3600)
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minutes, seconds = divmod(seconds, 60)
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self.time_label.setText(now.strftime("%Y/%m/%d %H:%M:%S"))
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self.elapsed_label.setText(
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f"{int(hours):02d}h{int(minutes):02d}m{int(seconds):02d}s"
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)
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@Slot()
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def closeEvent(self, event: QCloseEvent) -> None: # noqa: N802
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self.close_event.emit(event)
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@Slot()
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def keyPressEvent(self, event: QKeyEvent) -> None: # noqa: N802
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self.key_press_event.emit(event)
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class Player(QMainWindow): # type: ignore[misc]
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presentation_changed: Signal = Signal()
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slide_changed: Signal = Signal()
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def __init__(
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self,
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config: Config,
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presentation_configs: list[PresentationConfig],
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*,
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start_paused: bool = False,
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full_screen: bool = False,
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skip_all: bool = False,
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exit_after_last_slide: bool = False,
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hide_mouse: bool = False,
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aspect_ratio_mode: Qt.AspectRatioMode = Qt.KeepAspectRatio,
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presentation_index: int = 0,
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slide_index: int = 0,
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screen: Optional[QScreen] = None,
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playback_rate: float = 1.0,
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next_terminates_loop: bool = False,
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hide_info_window: bool = False,
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info_window_screen: Optional[QScreen] = None,
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):
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super().__init__()
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# Wizard's config
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self.config = config
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# Presentation configs
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self.presentation_configs = presentation_configs
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self.__current_presentation_index = 0
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self.__current_slide_index = 0
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self.current_presentation_index = presentation_index
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self.current_slide_index = slide_index
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self.__current_file: Path = self.current_slide_config.file
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self.__playing_reversed_slide = False
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# Widgets
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if screen:
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self.setScreen(screen)
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self.move(screen.geometry().topLeft())
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if full_screen:
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self.setWindowState(Qt.WindowFullScreen)
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else:
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w, h = self.current_presentation_config.resolution
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geometry = self.geometry()
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geometry.setWidth(w)
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geometry.setHeight(h)
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self.setGeometry(geometry)
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if hide_mouse:
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self.setCursor(Qt.BlankCursor)
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self.setWindowTitle(WINDOW_NAME)
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self.icon = QIcon(":/icon.png")
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self.setWindowIcon(self.icon)
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self.frame = QVideoFrame()
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self.audio_output = QAudioOutput()
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self.video_widget = QVideoWidget()
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self.video_sink = self.video_widget.videoSink()
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self.video_widget.setAspectRatioMode(aspect_ratio_mode)
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self.setCentralWidget(self.video_widget)
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self.media_player = QMediaPlayer(self)
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self.media_player.setAudioOutput(self.audio_output)
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self.media_player.setVideoOutput(self.video_widget)
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self.playback_rate = playback_rate
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self.presentation_changed.connect(self.presentation_changed_callback)
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self.slide_changed.connect(self.slide_changed_callback)
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self.info = Info(
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full_screen=full_screen,
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aspect_ratio_mode=aspect_ratio_mode,
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screen=info_window_screen,
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)
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self.info.close_event.connect(self.closeEvent)
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self.info.key_press_event.connect(self.keyPressEvent)
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self.video_sink.videoFrameChanged.connect(self.frame_changed)
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self.hide_info_window = hide_info_window
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# Connecting key callbacks
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self.config.keys.QUIT.connect(self.close)
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self.config.keys.PLAY_PAUSE.connect(self.play_pause)
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self.config.keys.NEXT.connect(self.next)
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self.config.keys.PREVIOUS.connect(self.previous)
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self.config.keys.REVERSE.connect(self.reverse)
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self.config.keys.REPLAY.connect(self.replay)
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self.config.keys.FULL_SCREEN.connect(self.full_screen)
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self.config.keys.HIDE_MOUSE.connect(self.hide_mouse)
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self.dispatch = self.config.keys.dispatch_key_function()
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# Misc
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self.exit_after_last_slide = exit_after_last_slide
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self.next_terminates_loop = next_terminates_loop
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# Setting-up everything
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if skip_all:
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def media_status_changed(status: QMediaPlayer.MediaStatus) -> None:
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self.media_player.setLoops(1) # Otherwise looping slides never end
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if status == QMediaPlayer.MediaStatus.EndOfMedia:
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self.load_next_slide()
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self.media_player.mediaStatusChanged.connect(media_status_changed)
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else:
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def media_status_changed(status: QMediaPlayer.MediaStatus) -> None:
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if (
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status == QMediaPlayer.MediaStatus.EndOfMedia
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and self.current_slide_config.auto_next
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):
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self.load_next_slide()
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self.media_player.mediaStatusChanged.connect(media_status_changed)
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if self.current_slide_config.loop:
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self.media_player.setLoops(-1)
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self.load_current_media(start_paused=start_paused)
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self.presentation_changed.emit()
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self.slide_changed.emit()
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"""
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Properties
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"""
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@property
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def presentations_count(self) -> int:
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return len(self.presentation_configs)
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@property
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def current_presentation_index(self) -> int:
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return self.__current_presentation_index
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@current_presentation_index.setter
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def current_presentation_index(self, index: int) -> None:
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if 0 <= index < self.presentations_count:
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self.__current_presentation_index = index
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elif -self.presentations_count <= index < 0:
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self.__current_presentation_index = index + self.presentations_count
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else:
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logger.warn(f"Could not set presentation index to {index}.")
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return
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self.presentation_changed.emit()
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@property
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def current_presentation_config(self) -> PresentationConfig:
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return self.presentation_configs[self.current_presentation_index]
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@property
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def current_slides_count(self) -> int:
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return len(self.current_presentation_config.slides)
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@property
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def current_slide_index(self) -> int:
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return self.__current_slide_index
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@current_slide_index.setter
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def current_slide_index(self, index: int) -> None:
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if 0 <= index < self.current_slides_count:
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self.__current_slide_index = index
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elif -self.current_slides_count <= index < 0:
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self.__current_slide_index = index + self.current_slides_count
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else:
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logger.warn(f"Could not set slide index to {index}.")
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return
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self.slide_changed.emit()
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@property
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def current_slide_config(self) -> SlideConfig:
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return self.current_presentation_config.slides[self.current_slide_index]
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@property
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def current_file(self) -> Path:
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return self.__current_file
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@current_file.setter
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def current_file(self, file: Path) -> None:
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self.__current_file = file
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@property
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def next_slide_config(self) -> Optional[SlideConfig]:
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if self.playing_reversed_slide:
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return self.current_slide_config
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elif self.current_slide_index < self.current_slides_count - 1:
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return self.presentation_configs[self.current_presentation_index].slides[
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self.current_slide_index + 1
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]
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elif self.current_presentation_index < self.presentations_count - 1:
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return self.presentation_configs[
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self.current_presentation_index + 1
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].slides[0]
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else:
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return None
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@property
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def next_file(self) -> Optional[Path]:
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if slide_config := self.next_slide_config:
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return slide_config.file # type: ignore[no-any-return]
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return None
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@property
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def playing_reversed_slide(self) -> bool:
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return self.__playing_reversed_slide
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@playing_reversed_slide.setter
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def playing_reversed_slide(self, playing_reversed_slide: bool) -> None:
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self.__playing_reversed_slide = playing_reversed_slide
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"""
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Loading slides
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"""
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def load_current_media(self, start_paused: bool = False) -> None:
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url = QUrl.fromLocalFile(str(self.current_file))
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self.media_player.setSource(url)
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if self.playing_reversed_slide:
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self.media_player.setPlaybackRate(
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self.current_slide_config.reversed_playback_rate * self.playback_rate
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)
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else:
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self.media_player.setPlaybackRate(
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self.current_slide_config.playback_rate * self.playback_rate
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)
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if start_paused:
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self.media_player.pause()
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else:
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self.media_player.play()
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def load_current_slide(self) -> None:
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slide_config = self.current_slide_config
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self.current_file = slide_config.file
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if slide_config.loop:
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self.media_player.setLoops(-1)
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else:
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self.media_player.setLoops(1)
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self.load_current_media()
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def load_previous_slide(self) -> None:
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self.playing_reversed_slide = False
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if self.current_slide_index > 0:
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self.current_slide_index -= 1
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elif self.current_presentation_index > 0:
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self.current_presentation_index -= 1
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self.current_slide_index = self.current_slides_count - 1
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else:
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logger.info("No previous slide.")
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return
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self.load_current_slide()
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def load_next_slide(self) -> None:
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if self.playing_reversed_slide:
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self.playing_reversed_slide = False
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self.preview_next_slide() # Slide number did not change, but next did
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elif self.current_slide_index < self.current_slides_count - 1:
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self.current_slide_index += 1
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elif self.current_presentation_index < self.presentations_count - 1:
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self.current_presentation_index += 1
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self.current_slide_index = 0
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elif self.exit_after_last_slide:
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self.close()
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return
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else:
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logger.info("No more slide to play.")
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return
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self.load_current_slide()
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def load_reversed_slide(self) -> None:
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self.playing_reversed_slide = True
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self.current_file = self.current_slide_config.rev_file
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self.load_current_media()
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"""
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Key callbacks and slots
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"""
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@Slot()
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def presentation_changed_callback(self) -> None:
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index = self.current_presentation_index
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count = self.presentations_count
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self.info.scene_label.setText(f"{index+1:4d}/{count:4<d}")
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@Slot()
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def slide_changed_callback(self) -> None:
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index = self.current_slide_index
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count = self.current_slides_count
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self.info.slide_label.setText(f"{index+1:4d}/{count:4<d}")
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self.info.slide_notes.setText(self.current_slide_config.notes)
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self.preview_next_slide()
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def preview_next_slide(self) -> None:
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if slide_config := self.next_slide_config:
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url = QUrl.fromLocalFile(str(slide_config.file))
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self.info.next_media_player.setSource(url)
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self.info.next_media_player.play()
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def show(self) -> None:
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super().show()
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if not self.hide_info_window:
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self.info.show()
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@Slot()
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def close(self) -> None:
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logger.info("Closing gracefully...")
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self.info.close()
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super().close()
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@Slot()
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def next(self) -> None:
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if self.media_player.playbackState() == QMediaPlayer.PlaybackState.PausedState:
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self.media_player.play()
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elif self.next_terminates_loop and self.media_player.loops() != 1:
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position = self.media_player.position()
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self.media_player.setLoops(1)
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self.media_player.stop()
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self.media_player.setPosition(position)
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self.media_player.play()
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else:
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self.load_next_slide()
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@Slot()
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def previous(self) -> None:
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self.load_previous_slide()
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@Slot()
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def reverse(self) -> None:
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self.load_reversed_slide()
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self.preview_next_slide()
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|
@Slot()
|
|
def replay(self) -> None:
|
|
self.media_player.setPosition(0)
|
|
self.media_player.play()
|
|
|
|
@Slot()
|
|
def play_pause(self) -> None:
|
|
state = self.media_player.playbackState()
|
|
if state == QMediaPlayer.PlaybackState.PausedState:
|
|
self.media_player.play()
|
|
elif state == QMediaPlayer.PlaybackState.PlayingState:
|
|
self.media_player.pause()
|
|
|
|
@Slot()
|
|
def full_screen(self) -> None:
|
|
if self.windowState() == Qt.WindowFullScreen:
|
|
self.setWindowState(Qt.WindowNoState)
|
|
else:
|
|
self.setWindowState(Qt.WindowFullScreen)
|
|
|
|
@Slot()
|
|
def hide_mouse(self) -> None:
|
|
if self.cursor().shape() == Qt.BlankCursor:
|
|
self.setCursor(Qt.ArrowCursor)
|
|
else:
|
|
self.setCursor(Qt.BlankCursor)
|
|
|
|
def frame_changed(self, frame: QVideoFrame) -> None:
|
|
"""
|
|
Slot to handle possibly invalid frames.
|
|
|
|
This slot cannot be decorated with ``@Slot`` as
|
|
the video sinks are handled in different threads.
|
|
|
|
As of Qt>=6.5.3, the last frame of every video is "flushed",
|
|
resulting in a short black screen between each slide.
|
|
|
|
To avoid this issue, we check every frame, and avoid playing
|
|
invalid ones.
|
|
|
|
References
|
|
----------
|
|
1. https://github.com/jeertmans/manim-slides/issues/293
|
|
2. https://github.com/jeertmans/manim-slides/pull/464
|
|
|
|
:param frame: The most recent frame.
|
|
|
|
"""
|
|
if frame.isValid():
|
|
self.frame = frame
|
|
else:
|
|
self.video_sink.setVideoFrame(self.frame) # Reuse previous frame
|
|
|
|
self.info.video_sink.setVideoFrame(self.frame)
|
|
|
|
def closeEvent(self, event: QCloseEvent) -> None: # noqa: N802
|
|
self.close()
|
|
|
|
def keyPressEvent(self, event: QKeyEvent) -> None: # noqa: N802
|
|
key = event.key()
|
|
self.dispatch(key)
|
|
event.accept()
|