网站图片展示源代码,做服装有哪些好的网站有哪些方面,网易邮箱账号注册,石家庄专业网站设计电话效果如图#xff1a; 风机具备调节转速的功能#xff0c;转速通过扇叶旋转的快慢来区别#xff0c;共分为四档#xff0c;其中零档为静止状态#xff0c;而一、二、三档则依次增加转速。在代码中#xff0c;BlowerWrapper 类包含了可旋转的扇叶、风机外框以及选项三个主要…效果如图 风机具备调节转速的功能转速通过扇叶旋转的快慢来区别共分为四档其中零档为静止状态而一、二、三档则依次增加转速。在代码中BlowerWrapper 类包含了可旋转的扇叶、风机外框以及选项三个主要部分。此处有两处关键点值得注意
BlowerWrapper 选择继承 QObject 的主要原因是为了配合 QPropertyAnimation 的使用由于普通的 QGraphicsItem 并未继承 QObject无法使用 QPropertyAnimation 增加动画功能。fan_item 、option 包括 option1、option2、option3均使用 setParentItem 方法将 blower_base 设置为它们的父对象这样便于它们随父对象一起移动。之所以没有使用 group 是因为使用 group 后item 将无法接收到鼠标的点击事件。见(https://stackoverflow.com/questions/60476803/how-to-propagate-mouse-events-to-a-qgraphicsitem-in-a-qgraphicsitemgroup)
下面是代码同步于gitcode https://gitcode.com/m0_37662818/fan
from PyQt5.QtCore import *
from PyQt5.QtCore import pyqtProperty
from PyQt5.QtGui import *
from PyQt5.QtWidgets import *import sysclass MySignal(QObject):fan_singal pyqtSignal(int)class clickedRectItem(QGraphicsRectItem):def __init__(self, level None, parentNone):super().__init__(parent)self.level levelself.signal MySignal()def mousePressEvent(self, event):if event.button() Qt.MouseButton.LeftButton:if self.level is not None:self.signal.fan_singal.emit(self.level)return super().mousePressEvent(event)class BlowerWrapper(QObject):def __init__(self, parentNone):super().__init__(parent)fan_pixmap QPixmap(./fan.png)blower_frame_pixmap QPixmap(./blower_frame.png)self.fan_item QGraphicsPixmapItem(fan_pixmap)self.blower_base QGraphicsPixmapItem(blower_frame_pixmap)self.option1 clickedRectItem(level1)self.option2 clickedRectItem(level2)self.option3 clickedRectItem(level3)self.fan_item.setParentItem(self.blower_base)self.option1.setParentItem(self.blower_base)self.option2.setParentItem(self.blower_base)self.option3.setParentItem(self.blower_base)self.fan_item.setTransformOriginPoint(self.fan_item.boundingRect().center())self.cal_rect()self.animation_init()self.option1.signal.fan_singal.connect(self.animate)self.option2.signal.fan_singal.connect(self.animate)self.option3.signal.fan_singal.connect(self.animate)self.blower_base.setFlag(QGraphicsItem.GraphicsItemFlag.ItemIsMovable, True)self.blower_base.setFlag(QGraphicsItem.GraphicsItemFlag.ItemIsSelectable, True)self.blower_base.setShapeMode(QGraphicsPixmapItem.ShapeMode.BoundingRectShape)self.level 0def animation_init(self):self.anim QPropertyAnimation(self, brotation)self.anim.setDuration(1600)self.anim.setStartValue(0)self.anim.setEndValue(360)self.anim.setLoopCount(-1)def animate(self,level:int None):if level is None or level self.level or level 0:self.anim.stop()self.set_rect_color(0)self.level 0returnelse:level int(level)self.level levelif level 1:time 1600elif level 2:time 700elif level 3:time 300else:returnself.anim.setDuration(time)self.set_rect_color(self.level)self.anim.start()def cal_rect(self):x_len self.blower_base.boundingRect().width()y_len self.blower_base.boundingRect().height()rect_side_length x_len / 4x_space (x_len - rect_side_length * 3 ) / 2x1 0.0 y1 y_len x_space / 2x2 rect_side_length x_spacey2 y_len x_space / 2x3 rect_side_length * 2 x_space * 2y3 y_len x_space / 2self.option1.setRect(QRectF(x1, y1, rect_side_length, rect_side_length))self.option2.setRect(QRectF(x2, y2, rect_side_length, rect_side_length))self.option3.setRect(QRectF(x3, y3, rect_side_length, rect_side_length))def _set_rotation(self, angle):self.fan_item.setRotation(angle)def set_rect_color(self, level:int):for item in [self.option1, self.option2, self.option3]:item.setBrush(QColor(255, 255, 255, 255))item.setPen(QColor(0,0,0,255))if level 1:self.option1.setBrush(QColor(0, 128, 255, 255))self.option1.setPen(QColor(0, 128, 255, 255))elif level 2:self.option2.setBrush(QColor(0, 128, 255, 255))self.option2.setPen(QColor(0, 128, 255, 255))elif level 3:self.option3.setBrush(QColor(0, 128, 255, 255))self.option3.setPen(QColor(0, 128, 255, 255))rotation pyqtProperty(int, fset_set_rotation)class MainWindow(QGraphicsView):def __init__(self):super().__init__()self.scene_area QGraphicsScene(self)self.scene_area.setSceneRect(0,0,300,300)self.setScene(self.scene_area)self.show()self.blower_wrapper BlowerWrapper()self.scene_area.addItem(self.blower_wrapper.blower_base)self.blower_wrapper.blower_base.setPos(125,110)self.btn QPushButton(开始)if __name__ __main__:app QApplication(sys.argv)ex MainWindow()sys.exit(app.exec_())
