238 lines
7.8 KiB
Python
238 lines
7.8 KiB
Python
#!/usr/bin/env python
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# -*- coding: utf-8 -*-
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"""
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Created on 2018年11月24日
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author: Irony
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site: https://pyqt5.com , https://github.com/892768447
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email: 892768447@qq.com
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file:
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description: 参考 http://qt.shoutwiki.com/wiki/Extending_QStackedWidget_for_sliding_page_animations_in_Qt
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"""
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from PyQt5.QtCore import Qt, pyqtProperty, QEasingCurve, QPoint, \
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QPropertyAnimation, QParallelAnimationGroup, QTimer
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from PyQt5.QtWidgets import QStackedWidget
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__Author__ = """By: Irony
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QQ: 892768447
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Email: 892768447@qq.com"""
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__Copyright__ = 'Copyright (c) 2018 Irony'
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__Version__ = 1.0
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class SlidingStackedWidget(QStackedWidget):
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LEFT2RIGHT, RIGHT2LEFT, TOP2BOTTOM, BOTTOM2TOP, AUTOMATIC = range(5)
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def __init__(self, *args, **kwargs):
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super(SlidingStackedWidget, self).__init__(*args, **kwargs)
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self._pnow = QPoint(0, 0)
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# 动画速度
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self._speed = 500
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# 当前索引
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self._now = 0
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# 自动模式的当前索引
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self._current = 0
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# 下一个索引
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self._next = 0
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# 是否激活
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self._active = 0
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# 动画方向(默认是横向)
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self._orientation = Qt.Horizontal
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# 动画曲线类型
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self._easing = QEasingCurve.Linear
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# 初始化动画
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self._initAnimation()
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def setSpeed(self, speed=500):
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"""设置动画速度
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:param speed: 速度值,默认值为500
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:type speed: int
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"""
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self._speed = speed
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@pyqtProperty(int, fset=setSpeed)
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def speed(self):
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return self._speed
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def setOrientation(self, orientation=Qt.Horizontal):
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"""设置动画的方向(横向和纵向)
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:param orientation: 方向(Qt.Horizontal或Qt.Vertical)
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:type orientation: http://doc.qt.io/qt-5/qt.html#Orientation-enum
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"""
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self._orientation = orientation
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@pyqtProperty(int, fset=setOrientation)
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def orientation(self):
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return self._orientation
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def setEasing(self, easing=QEasingCurve.OutBack):
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"""设置动画的曲线类型
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:param easing: 默认为QEasingCurve.OutBack
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:type easing: http://doc.qt.io/qt-5/qeasingcurve.html#Type-enum
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"""
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self._easing = easing
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@pyqtProperty(int, fset=setEasing)
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def easing(self):
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return self._easing
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def slideInNext(self):
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"""滑动到下一页"""
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now = self.currentIndex()
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if now < self.count() - 1:
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self.slideInIdx(now + 1)
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self._current = now + 1
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def slideInPrev(self):
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"""滑动到上一页"""
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now = self.currentIndex()
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if now > 0:
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self.slideInIdx(now - 1)
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self._current = now - 1
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def slideInIdx(self, idx, direction=4):
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"""滑动到指定序号
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:param idx: 序号
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:type idx: int
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:param direction: 方向,默认是自动AUTOMATIC=4
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:type direction: int
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"""
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if idx > self.count() - 1:
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direction = self.TOP2BOTTOM if self._orientation == Qt.Vertical else self.RIGHT2LEFT
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idx = idx % self.count()
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elif idx < 0:
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direction = self.BOTTOM2TOP if self._orientation == Qt.Vertical else self.LEFT2RIGHT
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idx = (idx + self.count()) % self.count()
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self.slideInWgt(self.widget(idx), direction)
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def slideInWgt(self, widget, direction):
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"""滑动到指定的widget
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:param widget: QWidget, QLabel, etc...
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:type widget: QWidget Base Class
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:param direction: 方向
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:type direction: int
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"""
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if self._active:
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return
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self._active = 1
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_now = self.currentIndex()
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_next = self.indexOf(widget)
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if _now == next:
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self._active = 0
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return
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w_now = self.widget(_now)
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w_next = self.widget(_next)
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# 自动判断方向
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if _now < _next:
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directionhint = self.TOP2BOTTOM if self._orientation == Qt.Vertical else self.RIGHT2LEFT
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else:
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directionhint = self.BOTTOM2TOP if self._orientation == Qt.Vertical else self.LEFT2RIGHT
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if direction == self.AUTOMATIC:
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direction = directionhint
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# 计算偏移量
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offsetX = self.frameRect().width()
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offsetY = self.frameRect().height()
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w_next.setGeometry(0, 0, offsetX, offsetY)
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if direction == self.BOTTOM2TOP:
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offsetX = 0
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offsetY = -offsetY
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elif direction == self.TOP2BOTTOM:
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offsetX = 0
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elif direction == self.RIGHT2LEFT:
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offsetX = -offsetX
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offsetY = 0
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elif direction == self.LEFT2RIGHT:
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offsetY = 0
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# 重新定位显示区域外部/旁边的下一个窗口小部件
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pnext = w_next.pos()
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pnow = w_now.pos()
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self._pnow = pnow
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# 移动到指定位置并显示
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w_next.move(pnext.x() - offsetX, pnext.y() - offsetY)
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w_next.show()
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w_next.raise_()
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self._animnow.setTargetObject(w_now)
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self._animnow.setDuration(self._speed)
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self._animnow.setEasingCurve(self._easing)
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self._animnow.setStartValue(QPoint(pnow.x(), pnow.y()))
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self._animnow.setEndValue(
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QPoint(offsetX + pnow.x(), offsetY + pnow.y()))
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self._animnext.setTargetObject(w_next)
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self._animnext.setDuration(self._speed)
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self._animnext.setEasingCurve(self._easing)
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self._animnext.setStartValue(
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QPoint(-offsetX + pnext.x(), offsetY + pnext.y()))
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self._animnext.setEndValue(QPoint(pnext.x(), pnext.y()))
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self._next = _next
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self._now = _now
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self._active = 1
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self._animgroup.start()
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def _initAnimation(self):
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"""初始化当前页和下一页的动画变量"""
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# 当前页的动画
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self._animnow = QPropertyAnimation(
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self, propertyName=b'pos', duration=self._speed,
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easingCurve=self._easing)
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# 下一页的动画
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self._animnext = QPropertyAnimation(
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self, propertyName=b'pos', duration=self._speed,
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easingCurve=self._easing)
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# 并行动画组
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self._animgroup = QParallelAnimationGroup(
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self, finished=self.animationDoneSlot)
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self._animgroup.addAnimation(self._animnow)
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self._animgroup.addAnimation(self._animnext)
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def setCurrentIndex(self, index):
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# 覆盖该方法实现的动画切换
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# super(SlidingStackedWidget, self).setCurrentIndex(index)
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# 坚决不能调用上面的函数,否则动画失效
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self.slideInIdx(index)
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def setCurrentWidget(self, widget):
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# 覆盖该方法实现的动画切换
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super(SlidingStackedWidget, self).setCurrentWidget(widget)
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# 坚决不能调用上面的函数,否则动画失效
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self.setCurrentIndex(self.indexOf(widget))
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def animationDoneSlot(self):
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"""动画结束处理函数"""
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# 由于重写了setCurrentIndex方法所以这里要用父类本身的方法
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# self.setCurrentIndex(self._next)
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QStackedWidget.setCurrentIndex(self, self._next)
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w = self.widget(self._now)
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w.hide()
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w.move(self._pnow)
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self._active = 0
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def autoStop(self):
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"""停止自动播放"""
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if hasattr(self, '_autoTimer'):
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self._autoTimer.stop()
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def autoStart(self, msec=3000):
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"""自动轮播
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:param time: 时间, 默认3000, 3秒
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"""
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if not hasattr(self, '_autoTimer'):
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self._autoTimer = QTimer(self, timeout=self._autoStart)
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self._autoTimer.stop()
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self._autoTimer.start(msec)
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def _autoStart(self):
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if self._current == self.count():
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self._current = 0
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self._current += 1
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self.setCurrentIndex(self._current)
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