C++ QTextBrowser::document方法代码示例

/*!
    Constructs a new about box on top of given \a parent window.
*/
AboutBox::AboutBox(QWidget * parent) : QDialog(parent)
{
    setWindowTitle("About MaxCalc");

    tstring labelText = _T("MaxCalc v");
    labelText += Constants::VERSION;
    labelText += _T(" (");
    labelText += _T("built: ");
    tstring date = stringToWideString(__DATE__);
    labelText += date;
    labelText += _T(")<br>");
    labelText += Constants::COPYRIGHT;
    labelText += _T("<br><a href='");
    labelText += Constants::WEBSITE;
    labelText += _T("'>");
    labelText += Constants::WEBSITE;
    labelText += _T("</a>");

    QTextBrowser * label = new QTextBrowser;
    label->setHtml(QString::fromWCharArray(labelText.c_str()));
    label->setOpenExternalLinks(true);
    label->setFrameStyle(QFrame::NoFrame);
    QPalette p;
    p.setColor(QPalette::Base, p.color(QPalette::Background));
    label->setPalette(p);
    label->setLineWrapMode(QTextEdit::NoWrap);
    label->document()->adjustSize();
    label->setMinimumSize(label->document()->size().toSize());
    label->setMaximumSize(label->document()->size().toSize());

    QPushButton * closeButton = new QPushButton;
    closeButton->setText(tr("&Close"));

    QGridLayout * layout = new QGridLayout;
    layout->addWidget(label, 1, 0, 1, -1);
    layout->addItem(new QSpacerItem(20, 10, QSizePolicy::Minimum,
        QSizePolicy::Fixed), 2, 1, 1, 1);
    layout->addItem(new QSpacerItem(20, 20,
        QSizePolicy::Expanding), 3, 0, 1, 1);
    layout->addWidget(closeButton, 3, 1, 1, 1);
    layout->addItem(new QSpacerItem(20, 20,
        QSizePolicy::Expanding), 3, 2, 1, 1);    

    setLayout(layout);

    setMaximumSize(sizeHint());
    setMinimumSize(sizeHint());

    connect(closeButton, SIGNAL(clicked()), this, SLOT(close()));
}

void UIDesktopPanePrivate::prepareErrorPane()
{
    if (m_pErrBox)
        return;

    /* Create error pane: */
    m_pErrBox = new QWidget;

    /* Create main layout: */
    QVBoxLayout *pMainLayout = new QVBoxLayout(m_pErrBox);
#if   defined(VBOX_WS_MAC)
    pMainLayout->setContentsMargins(4, 5, 5, 5);
#elif defined(VBOX_WS_WIN)
    pMainLayout->setContentsMargins(3, 5, 5, 0);
#elif defined(VBOX_WS_X11)
    pMainLayout->setContentsMargins(0, 5, 5, 5);
#endif
    pMainLayout->setSpacing(10);

    /* Create error label: */
    m_pErrLabel = new QLabel(m_pErrBox);
    m_pErrLabel->setWordWrap(true);
    m_pErrLabel->setSizePolicy(QSizePolicy::Expanding, QSizePolicy::Fixed);
    pMainLayout->addWidget(m_pErrLabel);

    /* Create error text-browser: */
    m_pErrText = new QTextBrowser(m_pErrBox);
    m_pErrText->setFocusPolicy(Qt::StrongFocus);
    m_pErrText->document()->setDefaultStyleSheet("a { text-decoration: none; }");
    pMainLayout->addWidget(m_pErrText);

    /* If refresh action was set: */
    if (m_pRefreshAction)
    {
        /* Create refresh button: */
        m_pRefreshButton = new QToolButton(m_pErrBox);
        m_pRefreshButton->setFocusPolicy(Qt::StrongFocus);

        /* Create refresh button layout: */
        QHBoxLayout *pButtonLayout = new QHBoxLayout;
        pMainLayout->addLayout(pButtonLayout);
        pButtonLayout->addStretch();
        pButtonLayout->addWidget(m_pRefreshButton);

        /* Connect refresh button: */
        connect(m_pRefreshButton, SIGNAL(clicked()), m_pRefreshAction, SIGNAL(triggered()));
    }

    pMainLayout->addStretch();

    /* Add into the stack: */
    addWidget(m_pErrBox);

    /* Retranslate finally: */
    retranslateUi();
}

int main(int argc, char **argv)
{
    QApplication app(argc, argv);

//! [0]
    QTextBrowser browser;
    QColor linkColor(Qt::red);
    QString sheet = QString::fromLatin1("a { text-decoration: underline; color: %1 }").arg(linkColor.name());
    browser.document()->setDefaultStyleSheet(sheet);
//! [0]
    browser.setSource(QUrl("../../../html/index.html"));
    browser.resize(800, 600);
    browser.show();

    return app.exec();
}

void FindDialog::doFind(bool forward)
{
    QTextBrowser *browser = static_cast<QTextBrowser*>(mainWindow()->browsers()->currentBrowser());
    sb->clearMessage();

    if (ui.comboFind->currentText() != findExpr || lastBrowser != browser)
        onceFound = false;
    findExpr = ui.comboFind->currentText();

    QTextDocument::FindFlags flags = 0;

    if (ui.checkCase->isChecked())
        flags |= QTextDocument::FindCaseSensitively;

    if (ui.checkWords->isChecked())
        flags |= QTextDocument::FindWholeWords;

    QTextCursor c = browser->textCursor();
    if (!c.hasSelection()) {
        if (forward)
            c.movePosition(QTextCursor::Start);
        else
            c.movePosition(QTextCursor::End);

        browser->setTextCursor(c);
    }

    QTextDocument::FindFlags options;
    if (forward == false)
        flags |= QTextDocument::FindBackward;

    QTextCursor found = browser->document()->find(findExpr, c, flags);
    if (found.isNull()) {
        if (onceFound) {
            if (forward)
                statusMessage(tr("Search reached end of the document"));
            else
                statusMessage(tr("Search reached start of the document"));
        } else {
            statusMessage(tr( "Text not found" ));
        }
    } else {
        browser->setTextCursor(found);
    }
    onceFound |= !found.isNull();
    lastBrowser = browser;
}

void FindEditor::findHelper(FindOption *opt)
{
    bool bFocus = m_findEdit->hasFocus();
    LiteApi::IEditor *editor = m_liteApp->editorManager()->currentEditor();
    if (!editor) {
        return;
    }
    LiteApi::ITextEditor *textEditor = LiteApi::getTextEditor(editor);
    QTextCursor find;
    if (textEditor) {
        QPlainTextEdit *ed = LiteApi::getPlainTextEdit(editor);
        if (ed) {
            find = findEditor(ed->document(),ed->textCursor(),opt);
            if (!find.isNull()) {
                ed->setTextCursor(find);
            }
        }
    } else {
        QTextBrowser *ed = LiteApi::findExtensionObject<QTextBrowser*>(editor,"LiteApi.QTextBrowser");
        if (ed) {
            find = findEditor(ed->document(),ed->textCursor(),opt);
            if (!find.isNull()) {
                ed->setTextCursor(find);
            }
        }
    }
    if (find.isNull()) {
        m_status->setText(tr("Not find"));
    } else {
        m_status->setText(QString("Ln:%1 Col:%2").
                              arg(find.blockNumber()+1).
                              arg(find.columnNumber()+1));
    }
    if (bFocus) {
        m_findEdit->setFocus();
    } else if (textEditor) {
        textEditor->onActive();
    }
}

/*!
    Shows the application log.
    \todo Write some sort of log viewer.
*/
void MvdMainWindow::showLog()
{
    QFileInfo fi(paths().logFile());
    QFile file(fi.absoluteFilePath());
    if (!file.open(QIODevice::ReadOnly)) {
        QMessageBox::warning(this, MVD_CAPTION, tr("Failed to open the log file."));
        return;
    }

    QTextBrowser *viewer = new QTextBrowser;
    viewer->setWindowFlags(Qt::Tool);
    viewer->setWindowModality(Qt::NonModal);
    viewer->resize(640, 480);

    new MvdLogSyntaxHighlighter(viewer->document());

    QTextStream stream(&file);
    QString text = stream.readAll();

    viewer->setPlainText(text);
    viewer->show();
}