pyqt 中的滚动区域问题? [英] Issue with scrollarea in pyqt?

问题描述

这是我用qt-designer生成的文件.

This is the file I generated using qt-designer.

from PyQt4 import QtCore, QtGui

try:
    _fromUtf8 = QtCore.QString.fromUtf8
except AttributeError:
    _fromUtf8 = lambda s: s

class Ui_Dialog(object):
    def setupUi(self, Dialog):
        Dialog.setObjectName(_fromUtf8("Dialog"))
        Dialog.resize(1024, 600)
        sizePolicy = QtGui.QSizePolicy(QtGui.QSizePolicy.Fixed, QtGui.QSizePolicy.Fixed)
        sizePolicy.setHorizontalStretch(0)
        sizePolicy.setVerticalStretch(0)
        sizePolicy.setHeightForWidth(Dialog.sizePolicy().hasHeightForWidth())
        Dialog.setSizePolicy(sizePolicy)
        Dialog.setWindowTitle(QtGui.QApplication.translate("Dialog", "Dialog", None, QtGui.QApplication.UnicodeUTF8))
        self.gridLayout = QtGui.QGridLayout(Dialog)
        self.gridLayout.setObjectName(_fromUtf8("gridLayout"))
        self.verticalLayout = QtGui.QVBoxLayout()
        self.verticalLayout.setObjectName(_fromUtf8("verticalLayout"))
        self.graphicsView = QtGui.QGraphicsView(Dialog)
        sizePolicy = QtGui.QSizePolicy(QtGui.QSizePolicy.Expanding, QtGui.QSizePolicy.Fixed)
        sizePolicy.setHorizontalStretch(0)
        sizePolicy.setVerticalStretch(0)
        sizePolicy.setHeightForWidth(self.graphicsView.sizePolicy().hasHeightForWidth())
        self.graphicsView.setSizePolicy(sizePolicy)
        self.graphicsView.setVerticalScrollBarPolicy(QtCore.Qt.ScrollBarAlwaysOff)
        self.graphicsView.setHorizontalScrollBarPolicy(QtCore.Qt.ScrollBarAlwaysOff)
        self.graphicsView.setObjectName(_fromUtf8("graphicsView"))
        self.verticalLayout.addWidget(self.graphicsView)
        self.gridLayout.addLayout(self.verticalLayout, 0, 0, 1, 4)
        self.verticalLayout_2 = QtGui.QVBoxLayout()
        self.verticalLayout_2.setObjectName(_fromUtf8("verticalLayout_2"))
        self.pushButton = QtGui.QPushButton(Dialog)
        self.pushButton.setText(QtGui.QApplication.translate("Dialog", "Add", None, QtGui.QApplication.UnicodeUTF8))
        self.pushButton.setObjectName(_fromUtf8("pushButton"))
        self.verticalLayout_2.addWidget(self.pushButton)
        self.gridLayout.addLayout(self.verticalLayout_2, 1, 0, 1, 1)
        self.verticalLayout_4 = QtGui.QVBoxLayout()
        self.verticalLayout_4.setObjectName(_fromUtf8("verticalLayout_4"))
        self.pushButton_2 = QtGui.QPushButton(Dialog)
        self.pushButton_2.setText(QtGui.QApplication.translate("Dialog", "Delete", None, QtGui.QApplication.UnicodeUTF8))
        self.pushButton_2.setObjectName(_fromUtf8("pushButton_2"))
        self.verticalLayout_4.addWidget(self.pushButton_2)
        self.gridLayout.addLayout(self.verticalLayout_4, 1, 1, 1, 1)
        self.verticalLayout_5 = QtGui.QVBoxLayout()
        self.verticalLayout_5.setObjectName(_fromUtf8("verticalLayout_5"))
        self.pushButton_3 = QtGui.QPushButton(Dialog)
        self.pushButton_3.setText(QtGui.QApplication.translate("Dialog", "Edit", None, QtGui.QApplication.UnicodeUTF8))
        self.pushButton_3.setObjectName(_fromUtf8("pushButton_3"))
        self.verticalLayout_5.addWidget(self.pushButton_3)
        self.gridLayout.addLayout(self.verticalLayout_5, 1, 2, 1, 1)
        self.verticalLayout_3 = QtGui.QVBoxLayout()
        self.verticalLayout_3.setObjectName(_fromUtf8("verticalLayout_3"))
        self.label = QtGui.QLabel(Dialog)
        self.label.setText(QtGui.QApplication.translate("Dialog", "Connected", None, QtGui.QApplication.UnicodeUTF8))
        self.label.setObjectName(_fromUtf8("label"))
        self.verticalLayout_3.addWidget(self.label)
        self.gridLayout.addLayout(self.verticalLayout_3, 1, 3, 1, 1)
        self.horizontalLayout = QtGui.QHBoxLayout()
        self.horizontalLayout.setObjectName(_fromUtf8("horizontalLayout"))
        self.tableWidget = QtGui.QTableWidget(Dialog)
        self.tableWidget.setObjectName(_fromUtf8("tableWidget"))
        self.tableWidget.setColumnCount(0)
        self.tableWidget.setRowCount(0)
        self.horizontalLayout.addWidget(self.tableWidget)
        self.gridLayout.addLayout(self.horizontalLayout, 2, 0, 1, 3)
        self.horizontalLayout_2 = QtGui.QHBoxLayout()
        self.horizontalLayout_2.setObjectName(_fromUtf8("horizontalLayout_2"))
        self.tabWidget = QtGui.QTabWidget(Dialog)
        self.tabWidget.setObjectName(_fromUtf8("tabWidget"))
        self.tab = QtGui.QWidget()
        self.tab.setObjectName(_fromUtf8("tab"))
        self.verticalLayout_6 = QtGui.QVBoxLayout(self.tab)
        self.verticalLayout_6.setObjectName(_fromUtf8("verticalLayout_6"))
        self.scrollArea = QtGui.QScrollArea(self.tab)
        self.scrollArea.setWidgetResizable(True)
        self.scrollArea.setObjectName(_fromUtf8("scrollArea"))
        self.scrollAreaWidgetContents = QtGui.QWidget(self.scrollArea)
        self.scrollAreaWidgetContents.setGeometry(QtCore.QRect(0, 0, 701, 292))
        self.scrollAreaWidgetContents.setObjectName(_fromUtf8("scrollAreaWidgetContents"))
        self.verticalLayout_7 = QtGui.QVBoxLayout(self.scrollAreaWidgetContents)
        self.verticalLayout_7.setObjectName(_fromUtf8("verticalLayout_7"))
        self.dockWidget = QtGui.QDockWidget(self.scrollAreaWidgetContents)
        self.dockWidget.setObjectName(_fromUtf8("dockWidget"))
        self.dockWidgetContents = QtGui.QWidget()
        self.dockWidgetContents.setObjectName(_fromUtf8("dockWidgetContents"))
        self.verticalLayout_8 = QtGui.QVBoxLayout(self.dockWidgetContents)
        self.verticalLayout_8.setObjectName(_fromUtf8("verticalLayout_8"))
        self.plainTextEdit = QtGui.QPlainTextEdit(self.dockWidgetContents)
        sizePolicy = QtGui.QSizePolicy(QtGui.QSizePolicy.Ignored, QtGui.QSizePolicy.Ignored)
        sizePolicy.setHorizontalStretch(0)
        sizePolicy.setVerticalStretch(0)
        sizePolicy.setHeightForWidth(self.plainTextEdit.sizePolicy().hasHeightForWidth())
        self.plainTextEdit.setSizePolicy(sizePolicy)
        self.plainTextEdit.setObjectName(_fromUtf8("plainTextEdit"))
        self.verticalLayout_8.addWidget(self.plainTextEdit)
        self.dockWidget.setWidget(self.dockWidgetContents)
        self.verticalLayout_7.addWidget(self.dockWidget)


        self.dockWidget_2 = QtGui.QDockWidget(self.scrollAreaWidgetContents)
        self.dockWidget_2.setObjectName(_fromUtf8("dockWidget_2"))
        self.dockWidgetContents_2 = QtGui.QWidget()
        self.dockWidgetContents_2.setObjectName(_fromUtf8("dockWidgetContents_2"))
        self.verticalLayout_9 = QtGui.QVBoxLayout(self.dockWidgetContents_2)
        self.verticalLayout_9.setObjectName(_fromUtf8("verticalLayout_9"))
        self.plainTextEdit_2 = QtGui.QPlainTextEdit(self.dockWidgetContents_2)
        sizePolicy = QtGui.QSizePolicy(QtGui.QSizePolicy.Ignored, QtGui.QSizePolicy.Ignored)
        sizePolicy.setHorizontalStretch(0)
        sizePolicy.setVerticalStretch(0)
        sizePolicy.setHeightForWidth(self.plainTextEdit_2.sizePolicy().hasHeightForWidth())
        self.plainTextEdit_2.setSizePolicy(sizePolicy)
        self.plainTextEdit_2.setObjectName(_fromUtf8("plainTextEdit_2"))
        self.verticalLayout_9.addWidget(self.plainTextEdit_2)
        self.dockWidget_2.setWidget(self.dockWidgetContents_2)
        self.verticalLayout_7.addWidget(self.dockWidget_2)


    self.dockWidget_3 = QtGui.QDockWidget(self.scrollAreaWidgetContents)
        self.dockWidget_3.setObjectName(_fromUtf8("dockWidget_3"))
        self.dockWidgetContents_3 = QtGui.QWidget()
        self.dockWidgetContents_3.setObjectName(_fromUtf8("dockWidgetContents_3"))
        self.verticalLayout_10 = QtGui.QVBoxLayout(self.dockWidgetContents_3)
        self.verticalLayout_10.setObjectName(_fromUtf8("verticalLayout_10"))
        self.plainTextEdit_3 = QtGui.QPlainTextEdit(self.dockWidgetContents_3)
        sizePolicy = QtGui.QSizePolicy(QtGui.QSizePolicy.Ignored, QtGui.QSizePolicy.Ignored)
        sizePolicy.setHorizontalStretch(0)
        sizePolicy.setVerticalStretch(0)
        sizePolicy.setHeightForWidth(self.plainTextEdit_3.sizePolicy().hasHeightForWidth())
        self.plainTextEdit_3.setSizePolicy(sizePolicy)
        self.plainTextEdit_3.setObjectName(_fromUtf8("plainTextEdit_3"))
        self.verticalLayout_10.addWidget(self.plainTextEdit_3)
        self.dockWidget_3.setWidget(self.dockWidgetContents_3)
        self.verticalLayout_7.addWidget(self.dockWidget_3)    

        self.scrollArea.setWidget(self.scrollAreaWidgetContents)
        self.verticalLayout_6.addWidget(self.scrollArea)
        self.tabWidget.addTab(self.tab, _fromUtf8(""))
        self.tab_2 = QtGui.QWidget()
        self.tab_2.setObjectName(_fromUtf8("tab_2"))
        self.tabWidget.addTab(self.tab_2, _fromUtf8(""))
        self.horizontalLayout_2.addWidget(self.tabWidget)
        self.gridLayout.addLayout(self.horizontalLayout_2, 2, 3, 1, 1)

        self.retranslateUi(Dialog)
        QtCore.QMetaObject.connectSlotsByName(Dialog)

    def retranslateUi(self, Dialog):
        self.tabWidget.setTabText(self.tabWidget.indexOf(self.tab), QtGui.QApplication.translate("Dialog", "Tab 1", None, QtGui.QApplication.UnicodeUTF8))
        self.tabWidget.setTabText(self.tabWidget.indexOf(self.tab_2), QtGui.QApplication.translate("Dialog", "Tab 2", None, QtGui.QApplication.UnicodeUTF8))


if __name__ == "__main__":
    import sys
    app = QtGui.QApplication(sys.argv)
    Dialog = QtGui.QDialog()
    ui = Ui_Dialog()
    ui.setupUi(Dialog)
    Dialog.show()
    sys.exit(app.exec_())

输出在屏幕截图中:问题是即使我在 scrollArea 下设置了布局，Tab1 也没有显示任何滚动条.我期待滚动条的区域用红色矩形显示.

The output is in the screenshot: The problem is that the Tab1 is not showing any scrollbar even I set the layout under scrollArea. The region where I am expecting a scrollbar is shown by a red rectangle.

推荐答案

我记得这个类似的问题 :-) 如何将一个水平滚动条关联到多个分组框?

I remember this similar question :-) How to associate a horizontal scrollbar to multiple groupbox.?

您仍然没有获得正确滚动条的原因是因为您在滚动区域内的小部件没有最小高度并且被允许缩小到足够低的程度，以至于它们永远不会强制滚动区域显示其滚动条.

The reason you are still not getting proper scrollbars is because your widgets inside the scrollarea don't have a minimum height and are being allowed to shrink far enough down that they would never force the scrollarea to display its scrollbars.

在代码中，您可以通过以下方式解决此问题:

In code, you can fix this by:

self.dockWidgetContents.setMinimumHeight(100)

虽然，您不应该对从 Qt Designer 生成的这个文件进行任何直接编辑.你应该做的是进入 QtDesigner，选择小部件，然后在它们的属性列表的顶部，为它们设置一个最小高度.

Althought, you shouldn't be making any direct edits to this file being generated from Qt Designer. What you should do is go into QtDesigner, select the widgets, and at the top of their property list, set a minimum height for them.

这篇关于pyqt 中的滚动区域问题?的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持IT屋！