C++ QTextEdit::setFixedWidth方法代码示例

void CellWidget::setLayoutItems(int num)
{
	QVBoxLayout* layout = (QVBoxLayout*) this->layout();
	if(m_numLayoutItems < num)
	{
		m_checkers.resize(num);
		m_editors.resize(num);
		for(int i = m_numLayoutItems; i < num; i++)
		{
			QCheckBox* checker = new QCheckBox();
			QTextEdit* editor = new QTextEdit();
			editor->setReadOnly(true);
			editor->setFixedHeight(20);
			editor->setFixedWidth(120);
			QHBoxLayout* child_layout = new QHBoxLayout(); 
			child_layout->addWidget(checker);
			child_layout->addWidget(editor);
			layout->addLayout(child_layout);

			m_checkers[i] = checker;
			m_editors[i] = editor;
		}
	}
	else if(m_numLayoutItems > num)
	{
		for(int i = num ; i < m_numLayoutItems; i++)
		{
			m_checkers[i]->setHidden(true);
			//m_checkers[i]->setChecked(false);
			m_editors[i]->setHidden(true);
		}
	}
	m_numLayoutItems = num;
}

void TextZone::createThumbnail()
{
    QWidget *w = QApplication::focusWidget();
    if(w){


        //        pixmap.fill( Qt::white );

        //        QPainter painter( &pixmap );
        //        painter.setPen( Qt::black );





        ////        rect.translate( 0, rect.height()+10 );
        ////        rect.setHeight( 160 );
        //        doc.setTextWidth( rect.width() );
        //        painter.save();
        //        painter.translate( rect.topLeft() );
        //        doc.drawContents( &painter, rect.translated( -rect.topLeft() ) );
        //        painter.restore();

        //        rect.setHeight( textDocument.size().height()-160 );
        //        painter.setBrush( Qt::gray );
        //        painter.drawRect( rect );

        //        pixmap.save( "text.png" );





        QTextEdit tempEdit;
        tempEdit.setDocument(textDocument);
        tempEdit.setFixedHeight(textDocument->size().height());
        tempEdit.setFixedWidth(textDocument->textWidth());

#if QT_VERSION < 0x050000
        QPixmap thumbnail = QPixmap::grabWidget(&tempEdit);
#endif
#if QT_VERSION >= 0x050000
        QPixmap thumbnail = tempEdit.grab();
#endif


        emit textThumbnailSignal(thumbnail);
    }
}

void osk_dialog_frame::Create(const std::string& title, const std::u16string& message, char16_t* init_text, u32 charlimit, u32 options)
{
	state = OskDialogState::Open;

	static const auto& lineEditWidth = []() {return QLabel("This is the very length of the lineedit due to hidpi reasons.").sizeHint().width(); };

	if (m_dialog)
	{
		m_dialog->close();
		delete m_dialog;
	}

	m_dialog = new custom_dialog(false);
	m_dialog->setModal(true);

	// Title
	m_dialog->setWindowTitle(qstr(title));

	// Message
	QLabel* message_label = new QLabel(QString::fromStdU16String(message));

	// Text Input Counter
	const QString text = QString::fromStdU16String(std::u16string(init_text));
	QLabel* inputCount = new QLabel(QString("%1/%2").arg(text.length()).arg(charlimit));

	// Ok Button
	QPushButton* button_ok = new QPushButton("Ok", m_dialog);

	// Button Layout
	QHBoxLayout* buttonsLayout = new QHBoxLayout;
	buttonsLayout->setAlignment(Qt::AlignCenter);
	buttonsLayout->addStretch();
	buttonsLayout->addWidget(button_ok);
	buttonsLayout->addStretch();

	// Input Layout
	QHBoxLayout* inputLayout = new QHBoxLayout;
	inputLayout->setAlignment(Qt::AlignHCenter);

	// Text Input
	if (options & CELL_OSKDIALOG_NO_RETURN)
	{
		QLineEdit* input = new QLineEdit(m_dialog);
		input->setFixedWidth(lineEditWidth());
		input->setMaxLength(charlimit);
		input->setText(text);
		input->setFocus();

		if (options & CELL_OSKDIALOG_NO_SPACE)
		{
			input->setValidator(new QRegExpValidator(QRegExp("^\\S*$"), this));
		}

		connect(input, &QLineEdit::textChanged, [=](const QString& text)
		{
			inputCount->setText(QString("%1/%2").arg(text.length()).arg(charlimit));
			SetOskText(text);
			on_osk_input_entered();
		});
		connect(input, &QLineEdit::returnPressed, m_dialog, &QDialog::accept);

		inputLayout->addWidget(input);
	}
	else
	{
		QTextEdit* input = new QTextEdit(m_dialog);
		input->setFixedWidth(lineEditWidth());
		input->setText(text);
		input->setFocus();
		input->moveCursor(QTextCursor::End);
		m_text_old = text;

		connect(input, &QTextEdit::textChanged, [=]()
		{
			QString text = input->toPlainText();

			if (text == m_text_old)
			{
				return;
			}

			QTextCursor cursor = input->textCursor();
			const int cursor_pos_new = cursor.position();
			const int cursor_pos_old = cursor_pos_new + m_text_old.length() - text.length();

			// Reset to old state if character limit was reached
			if ((u32)m_text_old.length() >= charlimit && (u32)text.length() > charlimit)
			{
				input->blockSignals(true);
				input->setPlainText(m_text_old);
				cursor.setPosition(cursor_pos_old);
				input->setTextCursor(cursor);
				input->blockSignals(false);
				return;
			}

			int cursor_pos = cursor.position();

			// Clear text of spaces if necessary
			if (options & CELL_OSKDIALOG_NO_SPACE)
//.........这里部分代码省略.........