QT Widget 实现爱心灯展示, 跑马灯

#include "mainwindow.h" #include "ui_mainwindow.h" #include <QGridLayout> #include <QDebug> #include "ledwidget.h" /** * @brief The MarqueeLED class * @ note 跑马灯类, 亮灯号一致则点亮，不一致则熄灭 */ class MarqueeLED : public LEDWidget { public: MarqueeLED(int num = -1, QWidget *parent=nullptr) : LEDWidget(parent), m_num(num) { } void setNum(int num) { m_num = num; } public slots: void onLightUpNumberChanged(int num) { controlLed(num == m_num); } private: int m_num; }; MainWindow::MainWindow(QWidget *parent) : QMainWindow(parent) , ui(new Ui::MainWindow), m_currIndex(0) { ui->setupUi(this); uiInit(); //大“心型”的数据 int table1[64] = { 0, 0, 0, 0, 0, 0, 0, 0, 0, 1, 1, 0, 0, 1, 1, 0, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 0, 1, 1, 1, 1, 1, 1, 0, 0, 0, 1, 1, 1, 1, 0, 0, 0, 0, 0, 1, 1, 0, 0, 0, }; //小“心型”的数据 int table2[64] = { 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 1, 0, 0, 1, 0, 0, 0, 1, 1, 1, 1, 1, 1, 0, 0, 1, 1, 1, 1, 1, 1, 0, 0, 0, 1, 1, 1, 1, 0, 0, 0, 0, 0, 1, 1, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, }; ui->tableWidget->setRowCount(8); ui->tableWidget->setColumnCount(8); for (int r = 0; r < ui->tableWidget->rowCount(); ++r) { for (int l = 0; l < ui->tableWidget->columnCount(); ++l) { MarqueeLED *wgt = new MarqueeLED(ui->tableWidget->rowCount()*5 + l); wgt->controlLed(table1[ui->tableWidget->rowCount()*r + l]); ui->tableWidget->setColumnWidth(l, 100); ui->tableWidget->setRowHeight(l, 100); ui->tableWidget->setCellWidget(r, l, wgt); } } } MainWindow::~MainWindow() { widgetFree(); delete ui; } void MainWindow::uiInit() { ui->btnStop->setEnabled(false); QGridLayout *ly = new QGridLayout(ui->wgtLeds); ui->wgtLeds->setLayout(ly); connect(ui->btnStart, &QPushButton::clicked, this, &MainWindow::onStart); connect(ui->btnStop, &QPushButton::clicked, this, &MainWindow::onStop); connect(&m_actTimer, &QTimer::timeout, this, &MainWindow::onActionTimerTimeout); } void MainWindow::widgetFree() { QGridLayout *ly = qobject_cast<QGridLayout*> (ui->wgtLeds->layout()); for (QWidget *wgt : m_ledWidgets) { ly->removeWidget(wgt); delete wgt; wgt = nullptr; } m_ledWidgets.clear(); } void MainWindow::onActionTimerTimeout() { int lightUpNum = m_currIndex; emit numberChanged(lightUpNum); ++m_currIndex; if ( m_currIndex >= (ui->sbColumns->value() * ui->sbRows->value()) ) m_currIndex = 0; } void MainWindow::onStart() { ui->btnStop->setEnabled(false); ui->btnStart->setEnabled(false); QGridLayout *ly = qobject_cast<QGridLayout*> (ui->wgtLeds->layout()); for (int rowIndex = 0; rowIndex < ui->sbRows->value(); ++rowIndex) { for (int colIndex = 0; colIndex < ui->sbColumns->value(); ++colIndex) { MarqueeLED *wgt = new MarqueeLED(rowIndex * ui->sbColumns->value() + colIndex, this); m_ledWidgets.append(wgt); ly->addWidget(wgt, rowIndex, colIndex); connect(this, &MainWindow::numberChanged, wgt, &MarqueeLED::onLightUpNumberChanged); } } m_actTimer.setTimerType(Qt::PreciseTimer); m_actTimer.setInterval(ui->sbIntervalTime->value()); m_actTimer.start(); ui->btnStop->setEnabled(true); ui->btnStart->setEnabled(false); } void MainWindow::onStop() { m_actTimer.stop(); widgetFree(); m_currIndex = 0; ui->btnStop->setEnabled(false); ui->btnStart->setEnabled(true); }