Coverage for lib/lottie/gui/timeline_widget.py: 0%

1from PyQt5.QtGui import QIcon 

2from PyQt5.QtCore import Qt, QTimer 

3from PyQt5.QtCore import pyqtSignal as Signal 

4from PyQt5.QtCore import pyqtSlot as Slot 

5from PyQt5.QtWidgets import * 

6 

7 

8class TimelineWidget(QWidget): 

9 frame_changed = Signal(int) 

10 

11 def __init__(self): 

12 super().__init__() 

13 layout_slider = QHBoxLayout() 

14 layout_slider.setContentsMargins(0, 0, 0, 0) 

15 self.setLayout(layout_slider) 

16 self.button_play = QPushButton() 

17 self.button_play.setCheckable(True) 

18 self.button_play.toggled.connect(self.play_toggle) 

19 layout_slider.addWidget(self.button_play) 

20 self.slider = QSlider(Qt.Horizontal) 

21 layout_slider.addWidget(self.slider) 

22 self.slider_spin = QSpinBox() 

23 layout_slider.addWidget(self.slider_spin) 

24 self.slider.valueChanged.connect(self.slider_spin.setValue) 

25 self.slider_spin.valueChanged.connect(self.slider.setValue) 

26 self.slider.valueChanged.connect(self.frame_changed) 

27 

28 self.framerate = 60 

29 self.timer = QTimer(self) 

30 self.timer.timeout.connect(self._next_frame) 

31 self.stop() 

32 

33 self._min = 0 

34 self._max = 99 

35 

36 def set_min_max(self, min, max): 

37 self._min = min 

38 self._max = max 

39 self.slider.setMinimum(min) 

40 self.slider.setMaximum(max) 

41 self.slider_spin.setMinimum(min) 

42 self.slider_spin.setMaximum(max) 

43 

44 @Slot(int) 

45 def set_frame(self, frame): 

46 self.slider.setValue(frame) 

47 

48 @property 

49 def frame(self): 

50 return self.slider.value() 

51 

52 def _next_frame(self): 

53 nf = self.frame + 1 

54 if nf > self._max: 

55 nf = self._min 

56 self.slider.setValue(nf) 

57 

58 @Slot() 

59 def stop(self): 

60 self.timer.stop() 

61 self.button_play.setIcon(QIcon.fromTheme("media-playback-start")) 

62 self.button_play.setText("Play") 

63 self.button_play.setChecked(False) 

64 

65 @Slot() 

66 def play(self): 

67 if not self.isEnabled(): 

68 self.stop() 

69 return 

70 

71 self.button_play.setIcon(QIcon.fromTheme("media-playback-stop")) 

72 self.button_play.setText("Stop") 

73 

74 self.timer.start(1000/self.fps) 

75 

76 @Slot(bool) 

77 def play_toggle(self, play): 

78 if play: 

79 self.play() 

80 else: 

81 self.stop()