113 lines
3.9 KiB
Python
113 lines
3.9 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19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:
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"""
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from PyQt5.QtCore import Qt
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from PyQt5.QtGui import QPixmap, QPainter, QImage
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from PyQt5.QtWidgets import QWidget, QLabel, QPushButton,\
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QVBoxLayout, QHBoxLayout, QSpacerItem, QSizePolicy
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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 Window(QWidget):
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def __init__(self, *args, **kwargs):
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super(Window, self).__init__(*args, **kwargs)
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layout = QVBoxLayout(self)
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self.imageLabel = QLabel(self)
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self.imageLabel.setAlignment(Qt.AlignCenter)
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layout.addWidget(self.imageLabel)
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clayout = QHBoxLayout()
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layout.addItem(clayout)
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clayout.addItem(QSpacerItem(
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40, 20, QSizePolicy.Expanding, QSizePolicy.Minimum))
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clayout.addWidget(QPushButton('水平翻转', self, clicked=self.doHorFilp))
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clayout.addWidget(QPushButton('垂直翻转', self, clicked=self.doVerFilp))
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clayout.addWidget(QPushButton(
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'顺时针45度', self, clicked=self.doClockwise))
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clayout.addWidget(QPushButton(
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'逆时针45度', self, clicked=self.doAnticlockwise))
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clayout.addItem(QSpacerItem(
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40, 20, QSizePolicy.Expanding, QSizePolicy.Minimum))
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# 原始图片
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self.srcImage = QImage('Data/fg.png')
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self.imageLabel.setPixmap(QPixmap.fromImage(self.srcImage))
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def doHorFilp(self):
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# 水平翻转
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self.srcImage = self.srcImage.mirrored(True, False)
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self.imageLabel.setPixmap(QPixmap.fromImage(self.srcImage))
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def doVerFilp(self):
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# 垂直翻转
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self.srcImage = self.srcImage.mirrored(False, True)
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self.imageLabel.setPixmap(QPixmap.fromImage(self.srcImage))
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def doClockwise(self):
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# 顺时针45度
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image = QImage(self.srcImage.size(),
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QImage.Format_ARGB32_Premultiplied)
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painter = QPainter()
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painter.begin(image)
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# 以图片中心为原点
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hw = self.srcImage.width() / 2
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hh = self.srcImage.height() / 2
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painter.translate(hw, hh)
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painter.rotate(45) # 旋转45度
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painter.drawImage(-hw, -hh, self.srcImage) # 把图片绘制上去
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painter.end()
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self.srcImage = image # 替换
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self.imageLabel.setPixmap(QPixmap.fromImage(self.srcImage))
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# # 下面这个旋转方法针对90度的倍数,否则图片会变大
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# trans = QTransform()
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# trans.rotate(90)
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# self.srcImage = self.srcImage.transformed(
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# trans, Qt.SmoothTransformation)
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# self.imageLabel.setPixmap(QPixmap.fromImage(self.srcImage))
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def doAnticlockwise(self):
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# 逆时针45度
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image = QImage(self.srcImage.size(),
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QImage.Format_ARGB32_Premultiplied)
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painter = QPainter()
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painter.begin(image)
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# 以图片中心为原点
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hw = self.srcImage.width() / 2
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hh = self.srcImage.height() / 2
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painter.translate(hw, hh)
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painter.rotate(-45) # 旋转-45度
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painter.drawImage(-hw, -hh, self.srcImage) # 把图片绘制上去
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painter.end()
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self.srcImage = image # 替换
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self.imageLabel.setPixmap(QPixmap.fromImage(self.srcImage))
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# # 下面这个旋转方法针对90度的倍数,否则图片会变大
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# trans = QTransform()
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# trans.rotate(90)
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# self.srcImage = self.srcImage.transformed(
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# trans, Qt.SmoothTransformation)
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# self.imageLabel.setPixmap(QPixmap.fromImage(self.srcImage))
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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 = Window()
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w.show()
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sys.exit(app.exec_())
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