C++ QTextEdit::setTextFormat方法代码示例

ShowTextDlg::ShowTextDlg(const QString &fname, bool rich, QWidget *parent, const char *name)
:QDialog(parent, name, FALSE, WDestructiveClose)
{
	QString text;

	QFile f(fname);
	if(f.open(IO_ReadOnly)) {
		QTextStream t(&f);
		while(!t.eof())
			text += t.readLine() + '\n';
		f.close();
	}

	QVBoxLayout *vb1 = new QVBoxLayout(this, 8);
	QTextEdit *te = new QTextEdit(this);
	te->setReadOnly(TRUE);
	te->setTextFormat(rich ? QTextEdit::RichText : QTextEdit::PlainText);
	te->setText(text);

	vb1->addWidget(te);

	QHBoxLayout *hb1 = new QHBoxLayout(vb1);
	hb1->addStretch(1);
	QPushButton *pb = new QPushButton(tr("&OK"), this);
	connect(pb, SIGNAL(clicked()), SLOT(accept()));
	hb1->addWidget(pb);
	hb1->addStretch(1);

	resize(560, 384);
}

RKReadLineDialog::RKReadLineDialog (QWidget *parent, const QString &caption, const QString &prompt, RCommand *command) : KDialogBase (parent, 0, true, caption, KDialogBase::Ok | KDialogBase::Cancel) {
	RK_TRACE (DIALOGS);
	RK_ASSERT (command);

	QVBox *page = makeVBoxMainWidget ();
	new QLabel (caption, page);

	int screen_width = qApp->desktop ()->width () - 2*marginHint() - 2*spacingHint ();		// TODO is this correct on xinerama?

	QString context = command->fullOutput ();
	if (!context.isEmpty ()) {
		new QLabel (i18n ("Context:"), page);

		QTextEdit *output = new QTextEdit (page);
		output->setUndoRedoEnabled (false);
		output->setTextFormat (QTextEdit::PlainText);
		output->setCurrentFont (QFont ("Courier"));
		output->setWordWrap (QTextEdit::NoWrap);
		output->setText (context);
		output->setReadOnly (true);
		int cwidth = output->contentsWidth ();
		output->setMinimumWidth (screen_width < cwidth ? screen_width : cwidth);
		output->scrollToBottom ();
		output->setFocusPolicy (QWidget::NoFocus);
	}

	QLabel *promptl = new QLabel (prompt, page);
	promptl->setAlignment (Qt::WordBreak | promptl->alignment ());

	input = new QLineEdit (QString (), page);
	input->setMinimumWidth (fontMetrics ().maxWidth ()*20);
	input->setFocus ();
}

void TextEdit::fileNew()
{
    QTextEdit *edit = new QTextEdit( tabWidget );
    edit->setTextFormat( RichText );
    doConnections( edit );
    tabWidget->addTab( edit, tr( "noname" ) );
    tabWidget->showPage( edit );
    edit->viewport()->setFocus();
}

void TextEdit::load( const QString &f )
{
    if ( !QFile::exists( f ) )
	return;
    QTextEdit *edit = new QTextEdit( tabWidget );
    doConnections( edit );
    tabWidget->addTab( edit, QFileInfo( f ).fileName() );

    QFile fl( f );
    fl.open( IO_ReadOnly );
    QByteArray array = fl.readAll();
    array.resize( array.size() +1 );
    array[ (int)array.size() - 1 ] = '\0';
    QString text = ( f.find( "bidi.txt" ) != -1 ? QString::fromUtf8( array.data() ) : QString::fromLatin1( array.data() ) );
    edit->setText( text );

    edit->viewport()->setFocus();
    edit->setTextFormat( Qt::RichText );
}

void TextEdit::load( const QString &f )
{
    if ( !QFile::exists( f ) )
	return;
    QTextEdit *edit = new QTextEdit( tabWidget );
    edit->setTextFormat( RichText );
    doConnections( edit );
    tabWidget->addTab( edit, QFileInfo( f ).fileName() );
    QFile file( f );
    if ( !file.open( IO_ReadOnly ) )
	return;
    QTextStream ts( &file );
    QString txt = ts.read();
    if ( !QStyleSheet::mightBeRichText( txt ) )
	txt = QStyleSheet::convertFromPlainText( txt, QStyleSheetItem::WhiteSpacePre );
    edit->setText( txt );
    tabWidget->showPage( edit );
    edit->viewport()->setFocus();
    filenames.replace( edit, f );
}

int
QUimTextUtil::acquireSelectionTextInQTextEdit( enum UTextOrigin origin,
                                               int former_req_len,
                                               int latter_req_len,
                                               char **former, char **latter )
{
    QTextEdit *edit = (QTextEdit *)mWidget;
    QString text;
    int len, offset, newline;
    int start_para, start_index, end_para, end_index;
    int para, index;
    bool cursor_at_beginning = false;
    TextFormat format;

    if ( ! edit->hasSelectedText() )
        return -1;

    format = edit->textFormat();
    edit->setTextFormat( Qt::PlainText );

    edit->getCursorPosition( &para, &index );
    edit->getSelection(&start_para, &start_index, &end_para, &end_index, 0 );

    if ( para == start_para && index == start_index )
        cursor_at_beginning = true;

    text = edit->selectedText();
    len = text.length();

    if ( origin == UTextOrigin_Beginning ||
         ( origin == UTextOrigin_Cursor && cursor_at_beginning ) ) {
        *former = NULL;
        offset = 0;
        if ( latter_req_len >= 0 ) {
            if ( len > latter_req_len )
                offset = len - latter_req_len;
        } else {
            if (! ( ~latter_req_len & ( ~UTextExtent_Line | ~UTextExtent_Full ) ) ) {
                edit->setTextFormat( format );
                return -1;
            }

            if ( latter_req_len == UTextExtent_Line && ( ( newline = text.find( '\n' ) ) != -1 ) )
                offset = len - newline;
        }
        *latter = strdup( text.left( len - offset ).utf8() );
    } else if ( origin == UTextOrigin_End ||
                ( origin == UTextOrigin_Cursor && !cursor_at_beginning ) ) {
        offset = 0;
        if ( former_req_len >= 0 ) {
            if ( len > former_req_len )
                offset = len - former_req_len;
        } else {
            if (! ( ~former_req_len & ( ~UTextExtent_Line | ~UTextExtent_Full ) ) ) {
                edit->setTextFormat( format );
                return -1;
            }

            if ( former_req_len == UTextExtent_Line && ( ( newline = text.findRev( '\n' ) ) != -1 ) )
                offset = newline + 1;
        }
        *former = strdup( text.mid( offset, len - offset ).utf8() );
        *latter = NULL;
    } else {
        edit->setTextFormat( format );
        return -1;
    }

    edit->setTextFormat( format );
    return 0;
}