「C MAGAZINE - Qt GUI プログラミング」のコード移植 第2章
昨日の続きのネタが、仮想マシンのCent OSを起動するのが面倒になったので、ホストOSのWindows 7にPythonとPyQt4をインストールした。
第2章のサンプル
FindDialog
良くある文字列検索ダイアログ。
from PyQt4.QtCore import *
from PyQt4.QtGui import *
class FindDialog(QDialog):
findNext = pyqtSignal(QString, bool)
findPrev = pyqtSignal(QString, bool)
def __init__(self, parent=None):
super(FindDialog, self).__init__(parent)
self.setWindowTitle("Find")
self.label = QLabel("Find &what:", self)
self.lineEdit = QLineEdit(self)
self.label.setBuddy(self.lineEdit)
self.caseCheckBox = QCheckBox("Match &case", self)
self.backwardCheckBox = QCheckBox("Search &backward", self)
self.findButton = QPushButton("&Find", self)
self.findButton.setDefault(True)
self.findButton.setEnabled(False)
self.closeButton = QPushButton("Close", self)
self.lineEdit.textChanged.connect(self.enableFindButton)
self.findButton.clicked.connect(self.findClicked)
self.closeButton.clicked.connect(self.close)
topLeftLayout = QHBoxLayout()
topLeftLayout.addWidget(self.label)
topLeftLayout.addWidget(self.lineEdit)
leftLayout = QVBoxLayout()
leftLayout.addLayout(topLeftLayout)
leftLayout.addWidget(self.caseCheckBox)
leftLayout.addWidget(self.backwardCheckBox)
rightLayout = QVBoxLayout()
rightLayout.addWidget(self.findButton)
rightLayout.addWidget(self.closeButton)
rightLayout.addStretch(1)
mainLayout = QHBoxLayout(self)
mainLayout.setMargin(11)
mainLayout.setSpacing(6)
mainLayout.addLayout(leftLayout)
mainLayout.addLayout(rightLayout)
def findClicked(self):
text = self.lineEdit.text()
caseSensitive = self.caseCheckBox.isChecked()
if self.backwardCheckBox.isChecked():
self.findPrev.emit(text, caseSensitive)
else:
self.findNext.emit(text, caseSensitive)
def enableFindButton(self, text):
self.findButton.setEnabled(text != "")
if __name__ == '__main__':
def prevSearch(text, caseSensitive):
print "prevSearch: %s, %d" % (text, caseSensitive)
def nextSearch(text, caseSensitive):
print "nextSearch: %s, %d" % (text, caseSensitive)
import sys
app = QApplication(sys.argv)
dialog = FindDialog()
dialog.findPrev.connect(prevSearch)
dialog.findNext.connect(nextSearch)
dialog.show()
app.exec_()
Employee
これも良く見る社員管理クラス。GUIには関係なくシグナル／スロットが使える。
from PyQt4.QtCore import *
from PyQt4.QtGui import *
class Employee(QObject):
salaryChanged = pyqtSignal(int)
def __init__(self):
super(Employee, self).__init__()
self.mySalary = 0
def salary(self):
return self.mySalary
def setSalary(self, newSalary):
if newSalary != self.mySalary:
self.mySalary = newSalary
self.salaryChanged.emit(self.mySalary)
if __name__ == '__main__':
def print_salary(salary):
print "salary: %d\n" % salary
import sys
app = QApplication(sys.argv)
emp = Employee()
emp.salaryChanged.connect(print_salary)
emp.setSalary(100)
emp.setSalary(100)
GotoCellDialogTmpl
Qt Designerで作った初めてのUIテンプレート。
<?xml version="1.0" encoding="UTF-8"?>
<ui version="4.0">
<class>GotoCellDialogTmpl</class>
<widget class="QDialog" name="GotoCellDialogTmpl">
<property name="geometry">
<rect>
<x>0</x>
<y>0</y>
<width>260</width>
<height>84</height>
</rect>
</property>
<property name="windowTitle">
<string>Go to Cell</string>
</property>
<layout class="QVBoxLayout" name="verticalLayout">
<item>
<layout class="QHBoxLayout" name="horizontalLayout">
<item>
<widget class="QLabel" name="label">
<property name="text">
<string>&Call Location</string>
</property>
<property name="buddy">
<cstring>lineEdit</cstring>
</property>
</widget>
</item>
<item>
<widget class="QLineEdit" name="lineEdit"/>
</item>
</layout>
</item>
<item>
<layout class="QHBoxLayout" name="horizontalLayout_2">
<item>
<spacer name="horizontalSpacer">
<property name="orientation">
<enum>Qt::Horizontal</enum>
</property>
<property name="sizeHint" stdset="0">
<size>
<width>58</width>
<height>20</height>
</size>
</property>
</spacer>
</item>
<item>
<widget class="QPushButton" name="okButton">
<property name="enabled">
<bool>false</bool>
</property>
<property name="text">
<string>OK</string>
</property>
<property name="default">
<bool>true</bool>
</property>
</widget>
</item>
<item>
<widget class="QPushButton" name="cancelButton">
<property name="text">
<string>Cancel</string>
</property>
</widget>
</item>
</layout>
</item>
</layout>
</widget>
<tabstops>
<tabstop>lineEdit</tabstop>
<tabstop>okButton</tabstop>
<tabstop>cancelButton</tabstop>
</tabstops>
<resources/>
<connections>
<connection>
<sender>okButton</sender>
<signal>clicked()</signal>
<receiver>GotoCellDialogTmpl</receiver>
<slot>accept()</slot>
<hints>
<hint type="sourcelabel">
<x>116</x>
<y>59</y>
</hint>
<hint type="destinationlabel">
<x>129</x>
<y>41</y>
</hint>
</hints>
</connection>
<connection>
<sender>cancelButton</sender>
<signal>clicked()</signal>
<receiver>GotoCellDialogTmpl</receiver>
<slot>reject()</slot>
<hints>
<hint type="sourcelabel">
<x>207</x>
<y>59</y>
</hint>
<hint type="destinationlabel">
<x>129</x>
<y>41</y>
</hint>
</hints>
</connection>
</connections>
</ui>
GotoCellDialog
任意セルへ移動するためのダイアログ。
pyuic4 -o gotocelldialogtmpl.py gotocelldialogtmpl.ui
コンパイルしたコードを使用したダイアログ。
from PyQt4.QtCore import *
from PyQt4.QtGui import *
from gotocelldialogtmpl import *
class GotoCellDialog(QDialog, Ui_GotoCellDialogTmpl):
def __init__(self, parent=None):
super(GotoCellDialog, self).__init__(parent)
self.setupUi(self)
self.lineEdit.textChanged.connect(self.enableOkButton)
regExp = QRegExp("[A-Za-z][1-9][0-9]{0,2}")
self.lineEdit.setValidator(QRegExpValidator(regExp, self))
def enableOkButton(self):
self.okButton.setEnabled(self.lineEdit.hasAcceptableInput())
if __name__ == "__main__":
import sys
app = QApplication(sys.argv)
dialog = GotoCellDialog()
dialog.show()
app.exec_()
SortDialogTmpl
並べ替えダイアログのUIテンプレート。
<?xml version="1.0" encoding="UTF-8"?>
<ui version="4.0">
<class>SortDialog</class>
<widget class="QDialog" name="SortDialog">
<property name="geometry">
<rect>
<x>0</x>
<y>0</y>
<width>283</width>
<height>340</height>
</rect>
</property>
<property name="mouseTracking">
<bool>false</bool>
</property>
<property name="windowTitle">
<string>Sort</string>
</property>
<layout class="QGridLayout" name="gridLayout_4">
<property name="sizeConstraint">
<enum>QLayout::SetFixedSize</enum>
</property>
<item row="0" column="0">
<widget class="QGroupBox" name="primaryGroupBox">
<property name="title">
<string>&Primary Key</string>
</property>
<layout class="QGridLayout" name="gridLayout">
<item row="0" column="0">
<widget class="QLabel" name="primaryColumLabel">
<property name="text">
<string>Column</string>
</property>
</widget>
</item>
<item row="0" column="1" rowspan="2">
<widget class="QComboBox" name="primaryColumnCombo">
<item>
<property name="text">
<string>None</string>
</property>
</item>
</widget>
</item>
<item row="3" column="0">
<widget class="QLabel" name="primaryOrderLabel">
<property name="text">
<string>Order</string>
</property>
</widget>
</item>
<item row="0" column="2">
<spacer name="horizontalSpacer">
<property name="orientation">
<enum>Qt::Horizontal</enum>
</property>
<property name="sizeHint" stdset="0">
<size>
<width>33</width>
<height>20</height>
</size>
</property>
</spacer>
</item>
<item row="3" column="1" colspan="2">
<widget class="QComboBox" name="primaryOrderCombo">
<item>
<property name="text">
<string>Ascending</string>
</property>
</item>
<item>
<property name="text">
<string>Descending</string>
</property>
</item>
</widget>
</item>
</layout>
</widget>
</item>
<item row="0" column="1" rowspan="2">
<layout class="QVBoxLayout" name="verticalLayout">
<item>
<widget class="QPushButton" name="okButton">
<property name="text">
<string>OK</string>
</property>
<property name="default">
<bool>true</bool>
</property>
</widget>
</item>
<item>
<widget class="QPushButton" name="cancelButton">
<property name="text">
<string>Cancel</string>
</property>
</widget>
</item>
<item>
<spacer name="verticalSpacer_2">
<property name="orientation">
<enum>Qt::Vertical</enum>
</property>
<property name="sizeHint" stdset="0">
<size>
<width>20</width>
<height>18</height>
</size>
</property>
</spacer>
</item>
<item>
<widget class="QPushButton" name="moreButton">
<property name="text">
<string>&More</string>
</property>
<property name="checkable">
<bool>true</bool>
</property>
</widget>
</item>
</layout>
</item>
<item row="1" column="0">
<spacer name="verticalSpacer">
<property name="orientation">
<enum>Qt::Vertical</enum>
</property>
<property name="sizeType">
<enum>QSizePolicy::Expanding</enum>
</property>
<property name="sizeHint" stdset="0">
<size>
<width>20</width>
<height>7</height>
</size>
</property>
</spacer>
</item>
<item row="2" column="0">
<widget class="QGroupBox" name="secondaryGroupBox">
<property name="title">
<string>&Secondary Key</string>
</property>
<layout class="QGridLayout" name="gridLayout_2">
<item row="0" column="0">
<widget class="QLabel" name="secondaryColumnLabel">
<property name="text">
<string>Column</string>
</property>
</widget>
</item>
<item row="0" column="1" rowspan="2">
<widget class="QComboBox" name="secondaryColumnCombo">
<item>
<property name="text">
<string>None</string>
</property>
</item>
</widget>
</item>
<item row="3" column="0">
<widget class="QLabel" name="sconaryOrderLabel">
<property name="text">
<string>Order</string>
</property>
</widget>
</item>
<item row="0" column="2">
<spacer name="horizontalSpacer_2">
<property name="orientation">
<enum>Qt::Horizontal</enum>
</property>
<property name="sizeHint" stdset="0">
<size>
<width>33</width>
<height>20</height>
</size>
</property>
</spacer>
</item>
<item row="3" column="1" colspan="2">
<widget class="QComboBox" name="secondaryOrderCombo">
<item>
<property name="text">
<string>Ascending</string>
</property>
</item>
<item>
<property name="text">
<string>Descending</string>
</property>
</item>
</widget>
</item>
</layout>
</widget>
</item>
<item row="3" column="0">
<widget class="QGroupBox" name="tertiaryGroupBox">
<property name="title">
<string>&Tertiary Key</string>
</property>
<layout class="QGridLayout" name="gridLayout_3">
<item row="0" column="0">
<widget class="QLabel" name="tertiaryComunLabel">
<property name="text">
<string>Column</string>
</property>
</widget>
</item>
<item row="0" column="1" rowspan="2">
<widget class="QComboBox" name="tertiaryColumnCombo">
<item>
<property name="text">
<string>None</string>
</property>
</item>
</widget>
</item>
<item row="3" column="0">
<widget class="QLabel" name="tertiaryOrderLabel">
<property name="text">
<string>Order</string>
</property>
</widget>
</item>
<item row="0" column="2">
<spacer name="horizontalSpacer_3">
<property name="orientation">
<enum>Qt::Horizontal</enum>
</property>
<property name="sizeHint" stdset="0">
<size>
<width>33</width>
<height>20</height>
</size>
</property>
</spacer>
</item>
<item row="3" column="1" colspan="2">
<widget class="QComboBox" name="tertiaryOrderCombo">
<item>
<property name="text">
<string>Ascending</string>
</property>
</item>
<item>
<property name="text">
<string>Descending</string>
</property>
</item>
</widget>
</item>
</layout>
</widget>
</item>
</layout>
</widget>
<tabstops>
<tabstop>primaryColumnCombo</tabstop>
<tabstop>primaryOrderCombo</tabstop>
<tabstop>secondaryColumnCombo</tabstop>
<tabstop>secondaryOrderCombo</tabstop>
<tabstop>tertiaryColumnCombo</tabstop>
<tabstop>tertiaryOrderCombo</tabstop>
<tabstop>okButton</tabstop>
<tabstop>cancelButton</tabstop>
<tabstop>moreButton</tabstop>
</tabstops>
<resources/>
<connections>
<connection>
<sender>okButton</sender>
<signal>clicked()</signal>
<receiver>SortDialog</receiver>
<slot>accept()</slot>
<hints>
<hint type="sourcelabel">
<x>230</x>
<y>23</y>
</hint>
<hint type="destinationlabel">
<x>141</x>
<y>170</y>
</hint>
</hints>
</connection>
<connection>
<sender>cancelButton</sender>
<signal>clicked()</signal>
<receiver>SortDialog</receiver>
<slot>reject()</slot>
<hints>
<hint type="sourcelabel">
<x>230</x>
<y>57</y>
</hint>
<hint type="destinationlabel">
<x>141</x>
<y>170</y>
</hint>
</hints>
</connection>
<connection>
<sender>moreButton</sender>
<signal>toggled(bool)</signal>
<receiver>secondaryGroupBox</receiver>
<slot>setVisible(bool)</slot>
<hints>
<hint type="sourcelabel">
<x>230</x>
<y>108</y>
</hint>
<hint type="destinationlabel">
<x>94</x>
<y>178</y>
</hint>
</hints>
</connection>
<connection>
<sender>moreButton</sender>
<signal>toggled(bool)</signal>
<receiver>tertiaryGroupBox</receiver>
<slot>setVisible(bool)</slot>
<hints>
<hint type="sourcelabel">
<x>230</x>
<y>108</y>
</hint>
<hint type="destinationlabel">
<x>94</x>
<y>282</y>
</hint>
</hints>
</connection>
</connections>
</ui>
SortDialog
拡張機能付き検索ダイアログ。
from PyQt4.QtCore import *
from PyQt4.QtGui import *
from sortdialogtmpl import *
class SortDialog(QDialog, Ui_SortDialog):
def __init__(self, parent=None):
super(SortDialog, self).__init__(parent)
self.setupUi(self)
self.secondaryGroupBox.hide()
self.tertiaryGroupBox.hide()
self.setColumnRange('A', 'Z')
def setColumnRange(self, first, last):
self.primaryColumnCombo.clear()
self.secondaryColumnCombo.clear()
self.tertiaryColumnCombo.clear()
self.secondaryColumnCombo.addItem("None")
self.tertiaryColumnCombo.addItem("None")
self.primaryColumnCombo.setMinimumSize(self.secondaryColumnCombo.sizeHint())
ch = ord(first)
ch_last = ord(last)
while ch <= ch_last:
s = chr(ch)
self.primaryColumnCombo.addItem(s)
self.secondaryColumnCombo.addItem(s)
self.tertiaryColumnCombo.addItem(s)
ch = ch + 1
if __name__ == '__main__':
import sys
app = QApplication(sys.argv)
dialog = SortDialog()
dialog.setColumnRange('C', 'F')
dialog.show()
app.exec_()
