Question

我正在尝试创建自定义窗口小部件并将其添加到示例here之后的listwidget，但是使用窗口小部件作为here（答案）而不是进度条。自定义小部件可以独立工作。但是当它被添加到列表小部件时，水平滚动工作完美，但垂直滚动仅覆盖图像的一部分。有人可以提出一些改进吗？

代码是

import sys
from PyQt4 import QtCore, QtGui

try:
    _fromUtf8 = QtCore.QString.fromUtf8
except AttributeError:
    def _fromUtf8(s):
        return s

try:
    _encoding = QtGui.QApplication.UnicodeUTF8
    def _translate(context, text, disambig):
        return QtGui.QApplication.translate(context, text, disambig, _encoding)
except AttributeError:
    def _translate(context, text, disambig):
        return QtGui.QApplication.translate(context, text, disambig)

class MainWidget(QtGui.QWidget):
    def __init__(self, parent=None):
        QtGui.QWidget.__init__(self, parent)
        self.scene = QtGui.QGraphicsScene()
        self.view = QtGui.QGraphicsView(self.scene)
        layout = QtGui.QVBoxLayout()
        layout.addWidget(self.view)
        self.setLayout(layout)
        self.pixmap_item = QtGui.QGraphicsPixmapItem(QtGui.QPixmap('image.png'), None, self.scene)

class Ui_MainWindow(object):
    def setupUi(self, MainWindow):
        MainWindow.setObjectName(_fromUtf8("MainWindow"))
        MainWindow.resize(800, 600)
        sizePolicy = QtGui.QSizePolicy(QtGui.QSizePolicy.Preferred, QtGui.QSizePolicy.Preferred)
        sizePolicy.setHorizontalStretch(0)
        sizePolicy.setVerticalStretch(0)
        sizePolicy.setHeightForWidth(MainWindow.sizePolicy().hasHeightForWidth())
        MainWindow.setSizePolicy(sizePolicy)
        self.centralwidget = QtGui.QWidget(MainWindow)
        self.centralwidget.setObjectName(_fromUtf8("centralwidget"))
        self.listWidget = QtGui.QListWidget(self.centralwidget)
        self.listWidget.setGeometry(QtCore.QRect(170, 20, 400, 400))
        sizePolicy = QtGui.QSizePolicy(QtGui.QSizePolicy.Fixed, QtGui.QSizePolicy.Fixed)
        sizePolicy.setHorizontalStretch(0)
        sizePolicy.setVerticalStretch(0)
        sizePolicy.setHeightForWidth(self.listWidget.sizePolicy().hasHeightForWidth())
        self.listWidget.setSizePolicy(sizePolicy)
        self.listWidget.setVerticalScrollBarPolicy(QtCore.Qt.ScrollBarAsNeeded)
        self.listWidget.setHorizontalScrollBarPolicy(QtCore.Qt.ScrollBarAsNeeded)
        self.listWidget.setObjectName(_fromUtf8("listWidget"))
        self.pushButton = QtGui.QPushButton(self.centralwidget)
        self.pushButton.setGeometry(QtCore.QRect(40, 200, 113, 32))
        self.pushButton.setObjectName(_fromUtf8("pushButton"))
        MainWindow.setCentralWidget(self.centralwidget)
        self.menubar = QtGui.QMenuBar(MainWindow)
        self.menubar.setGeometry(QtCore.QRect(0, 0, 800, 22))
        self.menubar.setObjectName(_fromUtf8("menubar"))
        MainWindow.setMenuBar(self.menubar)
        self.statusbar = QtGui.QStatusBar(MainWindow)
        self.statusbar.setObjectName(_fromUtf8("statusbar"))
        MainWindow.setStatusBar(self.statusbar)
        self.retranslateUi(MainWindow)
        QtCore.QMetaObject.connectSlotsByName(MainWindow)

    def retranslateUi(self, MainWindow):
        MainWindow.setWindowTitle(_translate("MainWindow", "MainWindow", None))
        self.pushButton.setText(_translate("MainWindow", "PushButton", None))

class MyForm(QtGui.QMainWindow):
  def __init__(self, parent=None):
    QtGui.QWidget.__init__(self, parent)
    self.ui = Ui_MainWindow()
    self.ui.setupUi(self)
    self.ui.pushButton.clicked.connect(self.progress)

  def progress(self):
    item = QtGui.QListWidgetItem(self.ui.listWidget)
    item_widget = MainWidget()
    item.setSizeHint(item_widget.sizeHint())
    self.ui.listWidget.addItem(item)
    self.ui.listWidget.setItemWidget(item,item_widget)

if __name__ == "__main__":
  app = QtGui.QApplication(sys.argv)
  myapp = MyForm()
  myapp.show()
  sys.exit(app.exec_())

这是测试图像：

自定义小部件PyQt

0 个答案: