2018-07-26 14:28:16 +08:00
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#!/usr/bin/env python
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# -*- coding: utf-8 -*-
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"""
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Created on 2018年7月26日
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@author: Irony
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2018-09-25 23:20:03 +08:00
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@site: https://pyqt5.com, https://github.com/892768447
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2018-07-26 14:28:16 +08:00
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@email: 892768447@qq.com
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@file: QGraphicsView练习.QGraphicsItem.Item移动
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@description:
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"""
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from PyQt5.QtGui import QPainter, QColor
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from PyQt5.QtWidgets import QGraphicsRectItem, QGraphicsView, QGraphicsScene
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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__ = "Version 1.0"
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class MoveableItem(QGraphicsRectItem):
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def __init__(self, *args, **kwargs):
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super(MoveableItem, self).__init__(*args, **kwargs)
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self.setFlag(self.ItemIsMovable) # 设置为可以动
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self.setBrush(QColor(247, 160, 57)) # 设置背景颜色
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class ImageWidget(QGraphicsView):
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def __init__(self, *args, **kwargs):
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super(ImageWidget, self).__init__(*args, **kwargs)
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self.resize(800, 600)
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# 设置背景颜色
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self.setBackgroundBrush(QColor(31, 31, 47))
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# 去掉滚动条
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# self.setHorizontalScrollBarPolicy(Qt.ScrollBarAlwaysOff)
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# self.setVerticalScrollBarPolicy(Qt.ScrollBarAlwaysOff)
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# 设置变换中心为鼠标所在位置
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self.setTransformationAnchor(self.AnchorUnderMouse)
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# 不保证painter的状态
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self.setOptimizationFlags(self.DontSavePainterState)
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self.setViewportUpdateMode(self.SmartViewportUpdate)
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self.setRenderHints(QPainter.Antialiasing |
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QPainter.SmoothPixmapTransform)
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# 场景
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self._scene = QGraphicsScene()
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self.setScene(self._scene)
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self.setSceneRect(0, 0, self.width(), self.height())
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self._scene.addItem(MoveableItem(100, 100, 200, 200))
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if __name__ == '__main__':
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import sys
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from PyQt5.QtWidgets import QApplication
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app = QApplication(sys.argv)
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w = ImageWidget()
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w.show()
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sys.exit(app.exec_())
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