PyQt5中的可滚动QLabel图像
我在PyQt5中开发了一个表格。它具有一个按钮，其中一个是ScrollArea，其中包含QLabel以保存pixMap。单击该按钮后，.jpg图像将显示在标签中。图像的高度，宽度比QLabel大得多。显示图像，但未启用滚动条。这是图片，代码和.ui
图片
import sys, PyQt5, os, cv2
from PyQt5 import QtGui, QtWidgets, QtCore
from PyQt5.QtWidgets import QDialog
from PIL import Image
from PIL.ImageQt import ImageQt
from PyQt5.uic import loadUi
class photo(QDialog):
def __init__(self,parent=None):
super(photo, self).__init__(parent)
loadUi('EmployeeUpdate.ui', self)
self.btn.clicked.connect(self.attachImage)
def attachImage(self):
conImage = Image.open("G:/Data Analytics/Resnsol Face Recognition/a.jpg")
print(conImage.width,conImage.height)
pixMap = QtGui.QPixmap.fromImage(ImageQt(conImage))
self.imageLabel.setPixmap(pixMap)
#self.imageScrollArea.setGeometry(510, 380, 200, 195)
self.imageScrollArea.setWidgetResizable(True)
self.imageLabel.setAlignment(QtCore.Qt.AlignHCenter | QtCore.Qt.AlignVCenter)
def main():
app = PyQt5.QtWidgets.QApplication(sys.argv)
window = photo()
#window.attachImage()
window.show()
sys.exit(app.exec_())
if __name__ == '__main__':
main()
.ui文件
<?xml version="1.0" encoding="UTF-8"?>
<ui version="4.0">
<class>Dialog</class>
<widget class="QDialog" name="Dialog">
<property name="windowModality">
<enum>Qt::ApplicationModal</enum>
</property>
<property name="geometry">
<rect>
<x>0</x>
<y>0</y>
<width>1265</width>
<height>708</height>
</rect>
</property>
<property name="baseSize">
<size>
<width>600</width>
<height>600</height>
</size>
</property>
<property name="windowTitle">
<string>Employee Update</string>
</property>
<property name="modal">
<bool>true</bool>
</property>
<widget class="QTableWidget" name="employeeTableWidget">
<property name="geometry">
<rect>
<x>10</x>
<y>90</y>
<width>1241</width>
<height>261</height>
</rect>
</property>
<property name="alternatingRowColors">
<bool>true</bool>
</property>
<property name="rowCount">
<number>7</number>
</property>
<property name="columnCount">
<number>12</number>
</property>
<attribute name="horizontalHeaderShowSortIndicator" stdset="0">
<bool>true</bool>
</attribute>
<row/>
<row/>
<row/>
<row/>
<row/>
<row/>
<row/>
<column>
<property name="text">
<string>Id</string>
</property>
<property name="font">
<font>
<weight>75</weight>
<bold>true</bold>
</font>
</property>
</column>
<column>
<property name="text">
<string>First Name</string>
</property>
<property name="font">
<font>
<weight>75</weight>
<bold>true</bold>
</font>
</property>
</column>
<column>
<property name="text">
<string>Last Name</string>
</property>
<property name="font">
<font>
<weight>75</weight>
<bold>true</bold>
</font>
</property>
</column>
<column>
<property name="text">
<string>Address1</string>
</property>
<property name="font">
<font>
<weight>75</weight>
<bold>true</bold>
</font>
</property>
</column>
<column>
<property name="text">
<string>Address2</string>
</property>
<property name="font">
<font>
<weight>75</weight>
<bold>true</bold>
</font>
</property>
</column>
<column>
<property name="text">
<string>City</string>
</property>
<property name="font">
<font>
<weight>75</weight>
<bold>true</bold>
</font>
</property>
</column>
<column>
<property name="text">
<string>State</string>
</property>
<property name="font">
<font>
<weight>75</weight>
<bold>true</bold>
</font>
</property>
</column>
<column>
<property name="text">
<string>Pin</string>
</property>
<property name="font">
<font>
<weight>75</weight>
<bold>true</bold>
</font>
</property>
</column>
<column>
<property name="text">
<string>Date of Birth</string>
</property>
<property name="font">
<font>
<weight>75</weight>
<bold>true</bold>
</font>
</property>
</column>
<column>
<property name="text">
<string>Gender</string>
</property>
<property name="font">
<font>
<weight>75</weight>
<bold>true</bold>
</font>
</property>
</column>
<column>
<property name="text">
<string>Photo</string>
</property>
<property name="toolTip">
<string>Click to take photo</string>
</property>
<property name="font">
<font>
<weight>75</weight>
<bold>true</bold>
</font>
</property>
</column>
<column>
<property name="text">
<string>Del</string>
</property>
<property name="toolTip">
<string>Click to delete record</string>
</property>
<property name="font">
<font>
<weight>75</weight>
<bold>true</bold>
</font>
</property>
</column>
<item row="0" column="0">
<property name="text">
<string/>
</property>
</item>
</widget>
<widget class="QLabel" name="idLabel">
<property name="geometry">
<rect>
<x>20</x>
<y>30</y>
<width>16</width>
<height>16</height>
</rect>
</property>
<property name="text">
<string>Id</string>
</property>
</widget>
<widget class="QLineEdit" name="idText">
<property name="geometry">
<rect>
<x>40</x>
<y>30</y>
<width>113</width>
<height>20</height>
</rect>
</property>
</widget>
<widget class="QLabel" name="firstNameLabel">
<property name="geometry">
<rect>
<x>160</x>
<y>30</y>
<width>51</width>
<height>16</height>
</rect>
</property>
<property name="text">
<string>First Name</string>
</property>
</widget>
<widget class="QLineEdit" name="firstNameText">
<property name="geometry">
<rect>
<x>220</x>
<y>30</y>
<width>113</width>
<height>20</height>
</rect>
</property>
</widget>
<widget class="QLabel" name="lastNameLabel">
<property name="geometry">
<rect>
<x>340</x>
<y>30</y>
<width>51</width>
<height>16</height>
</rect>
</property>
<property name="text">
<string>Last Name</string>
</property>
</widget>
<widget class="QLineEdit" name="lastNameText">
<property name="geometry">
<rect>
<x>400</x>
<y>30</y>
<width>113</width>
<height>20</height>
</rect>
</property>
<property name="text">
<string>1</string>
</property>
</widget>
<widget class="QPushButton" name="searchButton">
<property name="geometry">
<rect>
<x>530</x>
<y>30</y>
<width>75</width>
<height>23</height>
</rect>
</property>
<property name="text">
<string>Search</string>
</property>
<property name="default">
<bool>true</bool>
</property>
</widget>
<widget class="QLabel" name="ErrorBar">
<property name="geometry">
<rect>
<x>-50</x>
<y>620</y>
<width>601</width>
<height>31</height>
</rect>
</property>
<property name="text">
<string/>
</property>
<property name="wordWrap">
<bool>true</bool>
</property>
</widget>
<widget class="QScrollArea" name="imageScrollArea">
<property name="geometry">
<rect>
<x>120</x>
<y>390</y>
<width>231</width>
<height>171</height>
</rect>
</property>
<property name="verticalScrollBarPolicy">
<enum>Qt::ScrollBarAlwaysOn</enum>
</property>
<property name="horizontalScrollBarPolicy">
<enum>Qt::ScrollBarAlwaysOn</enum>
</property>
<property name="widgetResizable">
<bool>true</bool>
</property>
<widget class="QWidget" name="scrollAreaWidgetContents">
<property name="geometry">
<rect>
<x>0</x>
<y>0</y>
<width>212</width>
<height>152</height>
</rect>
</property>
<widget class="QLabel" name="imageLabel">
<property name="geometry">
<rect>
<x>0</x>
<y>0</y>
<width>285</width>
<height>171</height>
</rect>
</property>
<property name="autoFillBackground">
<bool>false</bool>
</property>
<property name="styleSheet">
<string notr="true">font: 20pt "MS Shell Dlg 2";</string>
</property>
<property name="frameShape">
<enum>QFrame::NoFrame</enum>
</property>
<property name="text">
<string/>
</property>
<property name="textFormat">
<enum>Qt::AutoText</enum>
</property>
<property name="scaledContents">
<bool>false</bool>
</property>
<property name="alignment">
<set>Qt::AlignCenter</set>
</property>
</widget>
</widget>
</widget>
<widget class="QPushButton" name="btn">
<property name="geometry">
<rect>
<x>20</x>
<y>510</y>
<width>75</width>
<height>23</height>
</rect>
</property>
<property name="text">
<string>PushButton</string>
</property>
</widget>
</widget>
<tabstops>
<tabstop>idText</tabstop>
<tabstop>firstNameText</tabstop>
<tabstop>lastNameText</tabstop>
<tabstop>searchButton</tabstop>
<tabstop>employeeTableWidget</tabstop>
</tabstops>
<resources/>
<connections/>
</ui>
1 个答案:
答案 0 :(得分：2)
当您使用Qt Designer创建一个QScrollArea时，将创建一个名为scrollAreaWidgetContents的小部件，这是QScrollArea内部的部件，因此，其大小用于确定滚动条中显示的内容，在这种情况下，imageLabel是scrollAreaWidgetContents的子元素可以观察到，但是scrollAreaWidgetContents不知道imageLabel的大小，因此在这种情况下，必须使用布局以使scrollAreaWidgetContents的最小大小与imageLabel的最小大小匹配。
import sys
from PyQt5 import QtCore, QtGui, QtWidgets, uic
class photo(QtWidgets.QDialog):
def __init__(self,parent=None):
super(photo, self).__init__(parent)
uic.loadUi('EmployeeUpdate.ui', self)
self.btn.clicked.connect(self.attachImage)
def attachImage(self):
lay = QtWidgets.QVBoxLayout(self.scrollAreaWidgetContents)
lay.setContentsMargins(0, 0, 0, 0)
lay.addWidget(self.imageLabel)
path = "G:/Data Analytics/Resnsol Face Recognition/a.jpg"
pixMap = QtGui.QPixmap(path)
self.imageLabel.setPixmap(pixMap)
self.imageScrollArea.setWidgetResizable(True)
self.imageLabel.setAlignment(QtCore.Qt.AlignHCenter | QtCore.Qt.AlignVCenter)
def main():
app = QtWidgets.QApplication(sys.argv)
window = photo()
#window.attachImage()
window.show()
sys.exit(app.exec_())
if __name__ == '__main__':
main()
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