preferencedialog.cpp

C++ GUI Programming with Qt 4一书中的chap06源码

#include <QtGui>

#include "preferencedialog.h"

PreferenceDialog::PreferenceDialog(QWidget *parent)
    : QDialog(parent)
{
    createAppearancePage();
    createWebBrowserPage();
    createMailAndNewsPage();
    createAdvancedPage();

    okButton = new QPushButton(tr("OK"));
    cancelButton = new QPushButton(tr("Cancel"));
    okButton->setDefault(true);

    listWidget = new QListWidget;
    listWidget->addItem(tr("Appearance"));
    listWidget->addItem(tr("Web Browser"));
    listWidget->addItem(tr("Mail & News"));
    listWidget->addItem(tr("Advanced"));

    stackedLayout = new QStackedLayout;
    stackedLayout->addWidget(appearancePage);
    stackedLayout->addWidget(webBrowserPage);
    stackedLayout->addWidget(mailAndNewsPage);
    stackedLayout->addWidget(advancedPage);
    connect(listWidget, SIGNAL(currentRowChanged(int)),
            stackedLayout, SLOT(setCurrentIndex(int)));

    QHBoxLayout *buttonLayout = new QHBoxLayout;
    buttonLayout->addStretch();
    buttonLayout->addWidget(okButton);
    buttonLayout->addWidget(cancelButton);

    QGridLayout *mainLayout = new QGridLayout;
    mainLayout->setColumnStretch(0, 1);
    mainLayout->setColumnStretch(1, 3);
    mainLayout->addWidget(listWidget, 0, 0);
    mainLayout->addLayout(stackedLayout, 0, 1);
    mainLayout->addLayout(buttonLayout, 1, 0, 1, 2);
    setLayout(mainLayout);

    connect(okButton, SIGNAL(clicked()), this, SLOT(accept()));
    connect(cancelButton, SIGNAL(clicked()), this, SLOT(reject()));

    setWindowTitle(tr("Preferences"));
    listWidget->setCurrentRow(0);
}

void PreferenceDialog::createAppearancePage()
{
    appearancePage = new QWidget;

    openGroupBox = new QGroupBox(tr("Open at startup"));
    webBrowserCheckBox = new QCheckBox(tr("Web browser"));
    mailEditorCheckBox = new QCheckBox(tr("Mail editor"));
    newsgroupCheckBox = new QCheckBox(tr("Newsgroups"));

    toolbarsGroupBox = new QGroupBox(tr("Show toolbars as"));
    picturesAndTextRadioButton = new QRadioButton(tr("Pictures and "
                                                     "text"));
    picturesOnlyRadioButton = new QRadioButton(tr("Pictures only"));
    textOnlyRadioButton = new QRadioButton(tr("Text only"));

    tooltipsCheckBox = new QCheckBox(tr("Show tooltips"));
    webSiteIconsCheckBox = new QCheckBox(tr("Show web site icons"));
    resizeImagesCheckBox = new QCheckBox(tr("Resize large images to "
                                            "fit in the window"));

    QVBoxLayout *openLayout = new QVBoxLayout;
    openLayout->addWidget(webBrowserCheckBox);
    openLayout->addWidget(mailEditorCheckBox);
    openLayout->addWidget(newsgroupCheckBox);
    openGroupBox->setLayout(openLayout);

    QVBoxLayout *toolbarsLayout = new QVBoxLayout;
    toolbarsLayout->addWidget(picturesAndTextRadioButton);
    toolbarsLayout->addWidget(picturesOnlyRadioButton);
    toolbarsLayout->addWidget(textOnlyRadioButton);
    toolbarsGroupBox->setLayout(toolbarsLayout);

    QVBoxLayout *pageLayout = new QVBoxLayout;
    pageLayout->setMargin(0);
    pageLayout->addWidget(openGroupBox);
    pageLayout->addWidget(toolbarsGroupBox);
    pageLayout->addWidget(tooltipsCheckBox);
    pageLayout->addWidget(webSiteIconsCheckBox);
    pageLayout->addWidget(resizeImagesCheckBox);
    pageLayout->addStretch();
    appearancePage->setLayout(pageLayout);

    webBrowserCheckBox->setChecked(true);
    mailEditorCheckBox->setChecked(true);
    picturesAndTextRadioButton->setChecked(true);
    tooltipsCheckBox->setChecked(true);
    webSiteIconsCheckBox->setChecked(true);
}

void PreferenceDialog::createWebBrowserPage()
{
    webBrowserPage = new QWidget;

    displayGroupBox = new QGroupBox(tr("Display on startup"));
    blankRadioButton = new QRadioButton(tr("Blank page"));
    homeRadioButton = new QRadioButton(tr("Blank page"));
    lastRadioButton = new QRadioButton(tr("Last page visited"));

    homeGroupBox = new QGroupBox(tr("Home Page"));
    locationLabel = new QLabel(tr("Location:"));
    locationLineEdit = new QLineEdit;

    webButtonsGroupBox = new QGroupBox(tr("Select the buttons you want "
                                          "in the toolbar"));
    bookmarksCheckBox = new QCheckBox(tr("Bookmarks"));
    goCheckBox = new QCheckBox(tr("Go"));
    homeCheckBox = new QCheckBox(tr("Home"));
    searchCheckBox = new QCheckBox(tr("Search"));
    printCheckBox = new QCheckBox(tr("Print"));

    QVBoxLayout *displayLayout = new QVBoxLayout;
    displayLayout->addWidget(blankRadioButton);
    displayLayout->addWidget(homeRadioButton);
    displayLayout->addWidget(lastRadioButton);
    displayGroupBox->setLayout(displayLayout);

    QHBoxLayout *homeLayout = new QHBoxLayout;
    homeLayout->addWidget(locationLabel);
    homeLayout->addWidget(locationLineEdit);
    homeGroupBox->setLayout(homeLayout);

    QGridLayout *webButtonsLayout = new QGridLayout;
    webButtonsLayout->addWidget(bookmarksCheckBox, 0, 0);
    webButtonsLayout->addWidget(goCheckBox, 1, 0);
    webButtonsLayout->addWidget(homeCheckBox, 2, 0);
    webButtonsLayout->addWidget(searchCheckBox, 0, 1);
    webButtonsLayout->addWidget(printCheckBox, 1, 1);
    webButtonsGroupBox->setLayout(webButtonsLayout);

    QVBoxLayout *pageLayout = new QVBoxLayout;
    pageLayout->setMargin(0);
    pageLayout->addWidget(displayGroupBox);
    pageLayout->addWidget(homeGroupBox);
    pageLayout->addWidget(webButtonsGroupBox);
    pageLayout->addStretch();
    webBrowserPage->setLayout(pageLayout);

    homeRadioButton->setChecked(true);
    locationLineEdit->setText("http://www.trolltech.com/");
    bookmarksCheckBox->setChecked(true);
    homeCheckBox->setChecked(true);
    searchCheckBox->setChecked(true);
    printCheckBox->setChecked(true);
}

void PreferenceDialog::createMailAndNewsPage()
{
    mailAndNewsPage = new QWidget;

    generalGroupBox = new QGroupBox(tr("General settings"));
    confirmCheckBox = new QCheckBox(tr("Warn when moving folders to "
                                       "the Trash"));
    rememberCheckBox = new QCheckBox(tr("Remember the last selected "
                                        "message"));

    mailButtonsGroupBox = new QGroupBox(tr("Select the buttons you "
                                           "want in the toolbar"));
    fileCheckBox = new QCheckBox(tr("File"));
    nextCheckBox = new QCheckBox(tr("Next"));
    stopCheckBox = new QCheckBox(tr("Stop"));
    junkCheckBox = new QCheckBox(tr("Junk"));

    QVBoxLayout *generalLayout = new QVBoxLayout;
    generalLayout->addWidget(confirmCheckBox);
    generalLayout->addWidget(rememberCheckBox);
    generalGroupBox->setLayout(generalLayout);

    QGridLayout *mailButtonsLayout = new QGridLayout;
    mailButtonsLayout->addWidget(fileCheckBox, 0, 0);
    mailButtonsLayout->addWidget(nextCheckBox, 1, 0);
    mailButtonsLayout->addWidget(stopCheckBox, 0, 1);
    mailButtonsLayout->addWidget(junkCheckBox, 1, 1);
    mailButtonsGroupBox->setLayout(mailButtonsLayout);

    QVBoxLayout *pageLayout = new QVBoxLayout;
    pageLayout->setMargin(0);
    pageLayout->addWidget(generalGroupBox);
    pageLayout->addWidget(mailButtonsGroupBox);
    pageLayout->addStretch();
    mailAndNewsPage->setLayout(pageLayout);

    confirmCheckBox->setChecked(true);
    rememberCheckBox->setChecked(true);
    nextCheckBox->setChecked(true);
    junkCheckBox->setChecked(true);
}

void PreferenceDialog::createAdvancedPage()
{
    advancedPage = new QWidget;

    featuresGroupBox = new QGroupBox(tr("Features that help "
                                        "interpret web pages"));
    javaCheckBox = new QCheckBox(tr("Enable Java"));
    ftpCheckBox = new QCheckBox(tr("Use this email address for "
                                   "anonymous FTP:"));
    ftpLineEdit = new QLineEdit;

    connect(ftpCheckBox, SIGNAL(toggled(bool)),
            ftpLineEdit, SLOT(setEnabled(bool)));

    QGridLayout *featuresLayout = new QGridLayout;
    featuresLayout->addWidget(javaCheckBox, 0, 0, 1, 2);
    featuresLayout->addWidget(ftpCheckBox, 1, 0, 1, 2);
    featuresLayout->addWidget(ftpLineEdit, 2, 1);
    featuresGroupBox->setLayout(featuresLayout);

    QVBoxLayout *pageLayout = new QVBoxLayout;
    pageLayout->setMargin(0);
    pageLayout->addWidget(featuresGroupBox);
    pageLayout->addStretch();
    advancedPage->setLayout(pageLayout);

    javaCheckBox->setChecked(true);
    ftpLineEdit->setEnabled(false);
}