我这里有个问题。
在给定的代码中,动画和转换工作得很好。但是,我想要设置变换点。
根据我的说法,我必须设置.setTransformationOriginPoint(item.boundingRect().center()
然而,看起来转换是从左上角开始发生的。
我什至尝试手动设置点,但仍然不起作用。
这是代码:
from typing import Any
from PyQt6.QtCore import QPointF, QSequentialAnimationGroup, Qt, pyqtSignal
from PyQt6.QtGui import QColor, QEnterEvent, QMouseEvent , QTransform
from PyQt6.QtWidgets import QApplication, QGraphicsColorizeEffect, QGraphicsScene, QGraphicsView, QMainWindow, QWidget
from functools import partial
from PyQt6.QtSvgWidgets import QGraphicsSvgItem
from typing import Any, Callable
from PyQt6.QtCore import QEasingCurve, QPoint, QPropertyAnimation, QRect, QVariantAnimation
from PyQt6.QtWidgets import QGraphicsOpacityEffect, QWidget
class Animation:
def variantAnimation(startValue: Any , endValue: Any , duration: int , callback: Callable) -> QVariantAnimation:
animation = QVariantAnimation()
animation.setStartValue(startValue)
animation.setEndValue(endValue)
animation.setDuration(duration)
animation.setEasingCurve(QEasingCurve.Type.InOutQuad)
animation.valueChanged.connect(callback)
return animation
class Rounded_Jolly_Button(QGraphicsView):
clicked = pyqtSignal()
def __init__(self , parent: QWidget , location: str):
super().__init__(parent)
self.location = location
self.setStyleSheet("background-color: #2E3440; border-radius: 22px")
self.setFixedSize(45 , 45)
self.setCursor(Qt.CursorShape.PointingHandCursor)
self._scene = QGraphicsScene()
self.setScene(self._scene)
self._scene.setSceneRect(0 , 0 , 40 , 40)
self.setHorizontalScrollBarPolicy(Qt.ScrollBarPolicy.ScrollBarAlwaysOff)
self.setVerticalScrollBarPolicy(Qt.ScrollBarPolicy.ScrollBarAlwaysOff)
self.setStyles()
def setStyles(self):
color = QGraphicsColorizeEffect()
color.setColor(QColor("#D8DEE9"))
svg = QGraphicsSvgItem("./assets/google.svg")
svg.setAcceptHoverEvents(True)
svg.setPos(10 , 10)
svg.setGraphicsEffect(color)
self._scene.addItem(svg)
svg.setTransformOriginPoint(svg.boundingRect().center())
self.animations = QSequentialAnimationGroup()
self.animations.addAnimation(Animation.variantAnimation(QPointF(1.0 , 1.0) , QPointF(1.25 , 0.75) , 270 , partial(self.updateTransform , svg)))
self.animations.addAnimation(Animation.variantAnimation(QPointF(1.25 , 0.75) , QPointF(.75 , 1.25) , 90 , partial(self.updateTransform , svg)))
self.animations.addAnimation(Animation.variantAnimation(QPointF(.75 , 1.25) , QPointF(1.15 , .85) , 90 , partial(self.updateTransform , svg)))
self.animations.addAnimation(Animation.variantAnimation(QPointF(1.15 , 0.85) , QPointF(.95 , 1.05) , 135 , partial(self.updateTransform , svg)))
self.animations.addAnimation(Animation.variantAnimation(QPointF(.95 , 1.05) , QPointF(1.05 , 0.95) , 90 , partial(self.updateTransform , svg)))
self.animations.addAnimation(Animation.variantAnimation(QPointF(1.05 , 0.95) , QPointF(1 , 1) , 225 , partial(self.updateTransform , svg)))
def enterEvent(self, event: QEnterEvent) -> None:
self.animations.start()
return super().enterEvent(event)
def mousePressEvent(self, ev: QMouseEvent) -> None:
if(ev.button() == Qt.MouseButton.LeftButton):
self.clicked.emit()
return super().mousePressEvent(ev)
def updateTransform(self , target: QGraphicsSvgItem , newValue: Any):
target.setTransform(QTransform().scale(newValue.x() , newValue.y()))
def window():
app = QApplication([])
window = QMainWindow()
parent = QWidget()
button = Rounded_Jolly_Button(parent , None)
window.setCentralWidget(parent)
window.show()
exit(app.exec())
if __name__ == '__main__':
window()
Note: ./assets/google.svg
包含从下载的 svg字体真棒 https://fontawesome.com/v5.15/icons/google?style=brands并将大小调整为 20x20 像素