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QWizardPage类是向导页面的基类。 QWizard表示一个向导。每个页面都是一个QWizardPage。当创建自己的向导时#xff0c;可以直接使用QWizardPage#xff0c;也可以子类化它以获得更多控制。 页面具有以下属性#xff0c;由QWizard呈现#xff1a;a title#xff0c;…介绍
QWizardPage类是向导页面的基类。 QWizard表示一个向导。每个页面都是一个QWizardPage。当创建自己的向导时可以直接使用QWizardPage也可以子类化它以获得更多控制。 页面具有以下属性由QWizard呈现a titlea subTitle和a set of pixmaps。有关详细信息请参见向导页面元素。一旦将页面添加到向导中使用QWizard :: addPage或QWizard :: setPagewizard将返回指向相关的QWizard对象的指针。 页面提供了五个虚函数可以重新实现以提供自定义行为
initializePage在用户单击向导的“下一步”按钮时调用以初始化页面的内容。如果您想从先前页面输入的内容中派生页面的默认值则应该重新实现此函数。cleanupPage在用户单击向导的“返回”按钮时调用以重置页面的内容。validatePage在用户单击Next或Finish时验证页面。如果用户输入了不完整或无效的信息通常会使用此函数显示错误消息。nextId返回下一页的ID。它在创建非线性向导时很有用这些向导允许基于用户提供的信息进行不同的遍历路径。isComplete用于确定是否应启用或禁用“下一步”和/或“完成”按钮。如果重新实现isComplete还必须确保每当完成状态更改时发出completeChanged。
通常向导的“下一步”按钮和“完成”按钮是互斥的。如果isFinalPage返回true则可用Finish否则可用下一步。默认情况下isFinalPage仅在nextId返回-1时为true。如果要在页面上同时显示“下一步”和“完成”允许用户执行“早期完成”请在该页面上调用setFinalPagetrue。对于支持早期完成的向导您可能还想在向导上设置HaveNextButtonOnLastPage和HaveFinishButtonOnEarlyPages选项。
在许多向导中页面的内容可能会影响后续页面的字段的默认值。为了方便页面之间的通信QWizard支持“字段”机制允许您在页面上注册字段例如QLineEdit并从任何页面访问其值。字段对整个向导程序是全局的并使任何单个页面都可以访问存储在另一个页面中的信息而无需将所有逻辑放入QWizard或页面明确知道彼此。使用registerField注册字段可以使用field和setField随时访问它们。
常用方法
virtual void initializePage(int id) 这个虚函数由QWizard::initializePage()调用以便在页面显示之前对其进行准备或者由于QWizard::restart()被调用或者由于用户单击Next而显示页面。(但是如果设置了QWizard::IndependentPages选项则仅在第一次显示页面时调用此函数。) 通过重新实现这个函数您可以确保页面的字段是基于先前页面中的字段正确初始化的。例如:
void OutputFilesPage: initializePage ()
QString className field(className).toString();headerLineEdit-setText(className.toLower() .h);implementationLineEdit-setText(className.toLower() .cpp);outputDirLineEdit - setText (QDir:: toNativeSeparators (QDir: tempPath ()));
}默认实现什么都不做。 2. void setButtonText(QWizard::WizardButton which, const QString text) 将按钮上的文本设置为本页上的文本。 默认情况下按钮上的文本依赖于QWizard::wizardStyle但可以使用QWizard::setButtonText()为整个向导重新定义。
setButtonText(QWizard::NextButton, hei);3. void setCommitPage(bool commitPage) 如果commitPage为true则将该页设置为提交页;否则将其设置为普通页面。 提交页是表示不能通过单击“返回”或“取消”来撤消的操作的页面。 提交按钮取代提交页面上的Next按钮。单击此按钮只调用QWizard::next()就像单击next一样。 直接从提交页面进入的页面会禁用后退按钮。
setCommitPage(true);void setFinalPage(bool finalPage) 如果finalPage为true则显式地将此页面设置为final。 调用setFinalPage(true)后isFinalPage()返回true, Finish按钮可见(如果isComplete()返回true则启用)。 调用setFinalPage(false)后如果nextId()返回-1,isFinalPage()返回true;否则返回false。
示例
.h
#ifndef CLASSWIZARD_H
#define CLASSWIZARD_H#include QWizardQT_BEGIN_NAMESPACE
class QCheckBox;
class QGroupBox;
class QLabel;
class QLineEdit;
class QRadioButton;
QT_END_NAMESPACEclass ClassWizard : public QWizard
{Q_OBJECTpublic:ClassWizard(QWidget *parent 0);void accept() override;
};class IntroPage : public QWizardPage
{Q_OBJECTpublic:IntroPage(QWidget *parent 0);private:QLabel *label;
};class ClassInfoPage : public QWizardPage
{Q_OBJECTpublic:ClassInfoPage(QWidget *parent 0);private:QLabel *classNameLabel;QLabel *baseClassLabel;QLineEdit *classNameLineEdit;QLineEdit *baseClassLineEdit;QCheckBox *qobjectMacroCheckBox;QGroupBox *groupBox;QRadioButton *qobjectCtorRadioButton;QRadioButton *qwidgetCtorRadioButton;QRadioButton *defaultCtorRadioButton;QCheckBox *copyCtorCheckBox;
};class CodeStylePage : public QWizardPage
{Q_OBJECTpublic:CodeStylePage(QWidget *parent 0);protected:void initializePage() override;private:QCheckBox *commentCheckBox;QCheckBox *protectCheckBox;QCheckBox *includeBaseCheckBox;QLabel *macroNameLabel;QLabel *baseIncludeLabel;QLineEdit *macroNameLineEdit;QLineEdit *baseIncludeLineEdit;
};class OutputFilesPage : public QWizardPage
{Q_OBJECTpublic:OutputFilesPage(QWidget *parent 0);protected:void initializePage() override;private:QLabel *outputDirLabel;QLabel *headerLabel;QLabel *implementationLabel;QLineEdit *outputDirLineEdit;QLineEdit *headerLineEdit;QLineEdit *implementationLineEdit;
};class ConclusionPage : public QWizardPage
{Q_OBJECTpublic:ConclusionPage(QWidget *parent 0);protected:void initializePage() override;private:QLabel *label;
};#endif
.cpp
#include QtWidgets#include classwizard.hClassWizard::ClassWizard(QWidget *parent): QWizard(parent)
{addPage(new IntroPage);addPage(new ClassInfoPage);addPage(new CodeStylePage);addPage(new OutputFilesPage);addPage(new ConclusionPage);setPixmap(QWizard::BannerPixmap, QPixmap(:/images/banner.png));setPixmap(QWizard::BackgroundPixmap, QPixmap(:/images/background.png));setWindowTitle(tr(Class Wizard));
}void ClassWizard::accept()
{QByteArray className field(className).toByteArray();QByteArray baseClass field(baseClass).toByteArray();QByteArray macroName field(macroName).toByteArray();QByteArray baseInclude field(baseInclude).toByteArray();QString outputDir field(outputDir).toString();QString header field(header).toString();QString implementation field(implementation).toString();QByteArray block;if (field(comment).toBool()) {block /*\n;block header.toLatin1() \n;block */\n;block \n;}if (field(protect).toBool()) {block #ifndef macroName \n;block #define macroName \n;block \n;}if (field(includeBase).toBool()) {block #include baseInclude \n;block \n;}block class className;if (!baseClass.isEmpty())block : public baseClass;block \n;block {\n;/* qmake ignore Q_OBJECT */if (field(qobjectMacro).toBool()) {block Q_OBJECT\n;block \n;}block public:\n;if (field(qobjectCtor).toBool()) {block className (QObject *parent 0);\n;} else if (field(qwidgetCtor).toBool()) {block className (QWidget *parent 0);\n;} else if (field(defaultCtor).toBool()) {block className ();\n;if (field(copyCtor).toBool()) {block className (const className other);\n;block \n;block className operator (const className other);\n;}}block };\n;if (field(protect).toBool()) {block \n;block #endif\n;}QFile headerFile(outputDir / header);if (!headerFile.open(QFile::WriteOnly | QFile::Text)) {QMessageBox::warning(0, QObject::tr(Simple Wizard),QObject::tr(Cannot write file %1:\n%2).arg(headerFile.fileName()).arg(headerFile.errorString()));return;}headerFile.write(block);block.clear();if (field(comment).toBool()) {block /*\n;block implementation.toLatin1() \n;block */\n;block \n;}block #include \ header.toLatin1() \\n;block \n;if (field(qobjectCtor).toBool()) {block className :: className (QObject *parent)\n;block : baseClass (parent)\n;block {\n;block }\n;} else if (field(qwidgetCtor).toBool()) {block className :: className (QWidget *parent)\n;block : baseClass (parent)\n;block {\n;block }\n;} else if (field(defaultCtor).toBool()) {block className :: className ()\n;block {\n;block // missing code\n;block }\n;if (field(copyCtor).toBool()) {block \n;block className :: className (const className other)\n;block {\n;block *this other;\n;block }\n;block \n;block className className ::operator(const className other)\n;block {\n;if (!baseClass.isEmpty())block baseClass ::operator(other);\n;block // missing code\n;block return *this;\n;block }\n;}}QFile implementationFile(outputDir / implementation);if (!implementationFile.open(QFile::WriteOnly | QFile::Text)) {QMessageBox::warning(0, QObject::tr(Simple Wizard),QObject::tr(Cannot write file %1:\n%2).arg(implementationFile.fileName()).arg(implementationFile.errorString()));return;}implementationFile.write(block);QDialog::accept();
}IntroPage::IntroPage(QWidget *parent): QWizardPage(parent)
{setTitle(tr(Introduction));setPixmap(QWizard::WatermarkPixmap, QPixmap(:/images/watermark1.png));label new QLabel(tr(This wizard will generate a skeleton C class definition, including a few functions. You simply need to specify the class name and set a few options to produce a header file and an implementation file for your new C class.));label-setWordWrap(true);QVBoxLayout *layout new QVBoxLayout;layout-addWidget(label);setLayout(layout);
}ClassInfoPage::ClassInfoPage(QWidget *parent): QWizardPage(parent)
{setTitle(tr(Class Information));setSubTitle(tr(Specify basic information about the class for which you want to generate skeleton source code files.));setPixmap(QWizard::LogoPixmap, QPixmap(:/images/logo1.png));classNameLabel new QLabel(tr(Class name:));classNameLineEdit new QLineEdit;classNameLabel-setBuddy(classNameLineEdit);baseClassLabel new QLabel(tr(Base class:));baseClassLineEdit new QLineEdit;baseClassLabel-setBuddy(baseClassLineEdit);qobjectMacroCheckBox new QCheckBox(tr(Generate Q_OBJECT macro));groupBox new QGroupBox(tr(Constructor));qobjectCtorRadioButton new QRadioButton(tr(QObject-style constructor));qwidgetCtorRadioButton new QRadioButton(tr(QWidget-style constructor));defaultCtorRadioButton new QRadioButton(tr(Default constructor));copyCtorCheckBox new QCheckBox(tr(Generate copy constructor and operator));defaultCtorRadioButton-setChecked(true);connect(defaultCtorRadioButton, QAbstractButton::toggled,copyCtorCheckBox, QWidget::setEnabled);registerField(className*, classNameLineEdit);registerField(baseClass, baseClassLineEdit);registerField(qobjectMacro, qobjectMacroCheckBox);registerField(qobjectCtor, qobjectCtorRadioButton);registerField(qwidgetCtor, qwidgetCtorRadioButton);registerField(defaultCtor, defaultCtorRadioButton);registerField(copyCtor, copyCtorCheckBox);QVBoxLayout *groupBoxLayout new QVBoxLayout;groupBoxLayout-addWidget(qobjectCtorRadioButton);groupBoxLayout-addWidget(qwidgetCtorRadioButton);groupBoxLayout-addWidget(defaultCtorRadioButton);groupBoxLayout-addWidget(copyCtorCheckBox);groupBox-setLayout(groupBoxLayout);QGridLayout *layout new QGridLayout;layout-addWidget(classNameLabel, 0, 0);layout-addWidget(classNameLineEdit, 0, 1);layout-addWidget(baseClassLabel, 1, 0);layout-addWidget(baseClassLineEdit, 1, 1);layout-addWidget(qobjectMacroCheckBox, 2, 0, 1, 2);layout-addWidget(groupBox, 3, 0, 1, 2);setLayout(layout);
}CodeStylePage::CodeStylePage(QWidget *parent): QWizardPage(parent)
{setTitle(tr(Code Style Options));setSubTitle(tr(Choose the formatting of the generated code.));setPixmap(QWizard::LogoPixmap, QPixmap(:/images/logo2.png));commentCheckBox new QCheckBox(tr(Start generated files with a comment));commentCheckBox-setChecked(true);protectCheckBox new QCheckBox(tr(Protect header file against multiple inclusions));protectCheckBox-setChecked(true);macroNameLabel new QLabel(tr(Macro name:));macroNameLineEdit new QLineEdit;macroNameLabel-setBuddy(macroNameLineEdit);includeBaseCheckBox new QCheckBox(tr(Include base class definition));baseIncludeLabel new QLabel(tr(Base class include:));baseIncludeLineEdit new QLineEdit;baseIncludeLabel-setBuddy(baseIncludeLineEdit);connect(protectCheckBox, QAbstractButton::toggled,macroNameLabel, QWidget::setEnabled);connect(protectCheckBox, QAbstractButton::toggled,macroNameLineEdit, QWidget::setEnabled);connect(includeBaseCheckBox, QAbstractButton::toggled,baseIncludeLabel, QWidget::setEnabled);connect(includeBaseCheckBox, QAbstractButton::toggled,baseIncludeLineEdit, QWidget::setEnabled);registerField(comment, commentCheckBox);registerField(protect, protectCheckBox);registerField(macroName, macroNameLineEdit);registerField(includeBase, includeBaseCheckBox);registerField(baseInclude, baseIncludeLineEdit);QGridLayout *layout new QGridLayout;layout-setColumnMinimumWidth(0, 20);layout-addWidget(commentCheckBox, 0, 0, 1, 3);layout-addWidget(protectCheckBox, 1, 0, 1, 3);layout-addWidget(macroNameLabel, 2, 1);layout-addWidget(macroNameLineEdit, 2, 2);layout-addWidget(includeBaseCheckBox, 3, 0, 1, 3);layout-addWidget(baseIncludeLabel, 4, 1);layout-addWidget(baseIncludeLineEdit, 4, 2);setLayout(layout);
}void CodeStylePage::initializePage()
{QString className field(className).toString();macroNameLineEdit-setText(className.toUpper() _H);QString baseClass field(baseClass).toString();includeBaseCheckBox-setChecked(!baseClass.isEmpty());includeBaseCheckBox-setEnabled(!baseClass.isEmpty());baseIncludeLabel-setEnabled(!baseClass.isEmpty());baseIncludeLineEdit-setEnabled(!baseClass.isEmpty());QRegularExpression rx(Q[A-Z].*);if (baseClass.isEmpty()) {baseIncludeLineEdit-clear();} else if (rx.match(baseClass).hasMatch()) {baseIncludeLineEdit-setText( baseClass );} else {baseIncludeLineEdit-setText( baseClass.toLower() .h\);}
}OutputFilesPage::OutputFilesPage(QWidget *parent): QWizardPage(parent)
{setTitle(tr(Output Files));setSubTitle(tr(Specify where you want the wizard to put the generated skeleton code.));setPixmap(QWizard::LogoPixmap, QPixmap(:/images/logo3.png));outputDirLabel new QLabel(tr(Output directory:));outputDirLineEdit new QLineEdit;outputDirLabel-setBuddy(outputDirLineEdit);headerLabel new QLabel(tr(Header file name:));headerLineEdit new QLineEdit;headerLabel-setBuddy(headerLineEdit);implementationLabel new QLabel(tr(Implementation file name:));implementationLineEdit new QLineEdit;implementationLabel-setBuddy(implementationLineEdit);registerField(outputDir*, outputDirLineEdit);registerField(header*, headerLineEdit);registerField(implementation*, implementationLineEdit);QGridLayout *layout new QGridLayout;layout-addWidget(outputDirLabel, 0, 0);layout-addWidget(outputDirLineEdit, 0, 1);layout-addWidget(headerLabel, 1, 0);layout-addWidget(headerLineEdit, 1, 1);layout-addWidget(implementationLabel, 2, 0);layout-addWidget(implementationLineEdit, 2, 1);setLayout(layout);
}void OutputFilesPage::initializePage()
{QString className field(className).toString();headerLineEdit-setText(className.toLower() .h);implementationLineEdit-setText(className.toLower() .cpp);outputDirLineEdit-setText(QDir::toNativeSeparators(QDir::tempPath()));
}ConclusionPage::ConclusionPage(QWidget *parent): QWizardPage(parent)
{setTitle(tr(Conclusion));setPixmap(QWizard::WatermarkPixmap, QPixmap(:/images/watermark2.png));label new QLabel;label-setWordWrap(true);QVBoxLayout *layout new QVBoxLayout;layout-addWidget(label);setLayout(layout);
}void ConclusionPage::initializePage()
{QString finishText wizard()-buttonText(QWizard::FinishButton);finishText.remove();label-setText(tr(Click %1 to generate the class skeleton.)
.main
#include QApplication
#include QTranslator
#include QLocale
#include QLibraryInfo#include classwizard.hint main(int argc, char *argv[])
{Q_INIT_RESOURCE(classwizard);QApplication app(argc, argv);#ifndef QT_NO_TRANSLATIONQString translatorFileName QLatin1String(qt_);translatorFileName QLocale::system().name();QTranslator *translator new QTranslator(app);if (translator-load(translatorFileName, QLibraryInfo::location(QLibraryInfo::TranslationsPath)))app.installTranslator(translator);
#endifClassWizard wizard;wizard.show();return app.exec();
}
