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python开发qt程序读取图片的简单流程
2020-11-08 16:17:00 【spiritboy】
python开发qt程序的简单流程
一. python 安装pyqt5
pip install pyqt5 -i https://mirrors.aliyun.com/pypi/simple
二. 安装qt designer(设计生成程序界面ui)
下载地址
(官方)https://build-system.fman.io/qt-designer-download
(csdn)https://download.csdn.net/download/qq_26696715/13094628
(加群下载)686070107
三. 使用qt designer设计生成ui文件
<?xml version="1.0" encoding="UTF-8"?>
<ui version="4.0">
<class>Dialog</class>
<widget class="QDialog" name="Dialog">
<property name="geometry">
<rect>
<x>0</x>
<y>0</y>
<width>635</width>
<height>511</height>
</rect>
</property>
<property name="windowTitle">
<string>Dialog</string>
</property>
<widget class="QPushButton" name="pushButton">
<property name="geometry">
<rect>
<x>20</x>
<y>10</y>
<width>81</width>
<height>31</height>
</rect>
</property>
<property name="font">
<font>
<pointsize>12</pointsize>
<weight>75</weight>
<bold>true</bold>
</font>
</property>
<property name="text">
<string>选择图片</string>
</property>
</widget>
<widget class="QLabel" name="label">
<property name="geometry">
<rect>
<x>20</x>
<y>70</y>
<width>581</width>
<height>401</height>
</rect>
</property>
<property name="text">
<string/>
</property>
<property name="pixmap">
<pixmap>img/1.tif</pixmap>
</property>
<property name="scaledContents">
<bool>true</bool>
</property>
</widget>
</widget>
<resources/>
<connections/>
</ui>
四. 将ui文件转换成py文件
pyuic5 -o ui.py ui.ui
五. 编写main.py文件调用ui.py文件
# -*- coding: utf-8 -*-
import sys
import time
from PyQt5.QtCore import *
from PyQt5.QtGui import *
from PyQt5.QtWidgets import *
import numpy as np
import cv2
import qimage2ndarray
from ui import Ui_Dialog
class mwindow(QWidget, Ui_Dialog):
def __init__(self):
super(mwindow, self).__init__()
self.setupUi(self)
#选择图片
def openimage(self):
#选择图片
imgName, imgType = QFileDialog.getOpenFileName(self, "打开图片", "img", "*.jpg;*.tif;*.png;;All Files(*)")
if imgName=="":
return 0
#qt5读取图片
jpg = QPixmap(imgName).scaled(self.label.width(), self.label.height())
#显示原图
self.label.setPixmap(jpg)
if __name__ == '__main__':
app=QApplication(sys.argv)
#初始化窗口
m=mwindow()
#绑定按钮事件
m.pushButton.clicked.connect(m.openimage)#选择图片
m.show()
sys.exit(app.exec_())
六. 运行main.py文件
python main.py
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版权声明
本文为[spiritboy]所创,转载请带上原文链接,感谢
https://my.oschina.net/u/3337401/blog/4708233
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