Qt小控制台字体滚动效果

#include "mainwindow.h" #include "ui_mainwindow.h" #include "codestring.h" #include <QDebug> MainWindow::MainWindow(QWidget *parent) : QMainWindow(parent), ui(new Ui::MainWindow) { ui->setupUi(this); m_timer = new QTimer(this); m_timer->setInterval(30); m_timer->start(); ui->label->setWordWrap(true); connect(m_timer, SIGNAL(timeout()), this, SLOT(onReadString())); ui->label->resize(this->width(), this->height()); } MainWindow::~MainWindow() { delete ui; } void MainWindow::onReadString() { CodeString codeTMP; QString codeString = codeTMP.codeStringText; int countTMP = ui->label->text().count(); if(codeString.count() == countTMP && countTMP != 0) { countTMP = 0; ui->label->move(0, 0); ui->label->resize(ui->label->width(), 14); } QString strTMP = codeString.mid(0, countTMP + 1); ui->label->setText(strTMP); QFont font; font.setFamily("Times"); font.setBold(true); font.setPixelSize(14); ui->label->setFont(font); int lineHeight = ui->label->fontMetrics().lineSpacing(); int lineCount = ui->label->text().split("\n").count(); int labelTextHeight = lineHeight * lineCount; ui->label->resize(ui->label->width(), labelTextHeight); if(labelTextHeight >= ui->centralWidget->height()) { ui->label->move(0, ui->centralWidget->height() - labelTextHeight); } }