runable version

DataStructureProject.pro

@@ -31,7 +31,8 @@ SOURCES += \
         cars.cpp \
         parkinglot.cpp \
         ParkingLotWidget.cpp \
-        Road.cpp
+        Road.cpp \
+    ParkingSpaceWidget.cpp
 
 HEADERS += \
         mainwindow.h \
@@ -39,7 +40,8 @@ HEADERS += \
         cars.h \
         parkinglot.h \
         ParkingLotWidget.h \
-        Road.h
+        Road.h \
+    ParkingSpaceWidget.h
 
 FORMS += \
         mainwindow.ui

cars.cpp

@@ -4,14 +4,33 @@
 
 Cars::Cars(QWidget *parent) : QWidget(parent)
 {
-    m_color = Color(rand() % 3);
+    Cars(Color(rand() % 3), parent);
+}
+
+Cars::Cars(Cars::Color color, QWidget *parent) : QWidget(parent)
+{
+    m_color = color;
     resize(200, 130);
+    switch (m_color) {
+    case Pink:
+        m_pixmap = QPixmap(":/cars/pink");
+        break;
+    case Red:
+        m_pixmap = QPixmap(":/cars/red");
+        break;
+    case Yellow:
+        m_pixmap = QPixmap(":/cars/yellow");
+        break;
+    default:
+        m_pixmap = QPixmap(":/cars/red");
+        break;
+    }
 }
 
 void Cars::paintEvent(QPaintEvent *event) {
     QPainter painter(this);
-    QPixmap pix(":/cars/yellow");
-    painter.drawPixmap(0, 0, 200, 130, pix);
+    painter.drawPixmap(0, 0, 200, 130, m_pixmap);
     painter.setPen(QPen(Qt::red, 5));
     painter.drawRect(0, 0, 200, 130);
+    event->ignore();
 }

cars.h

@@ -4,14 +4,15 @@
 #include <QWidget>
 #include <QPixmap>
 #include <QString>
+#include <QPaintEvent>
 
 class Cars : public QWidget
 {
     Q_OBJECT
 public:
     enum Color { Pink, Red, Yellow };
-    explicit Cars(QWidget *parent = nullptr);
-    explicit Cars(Color color, QWidget *parenet = nullptr) {}
+    explicit Cars(QWidget *parent = nullptr);   //Ëæ»úÑÕÉ«
+    explicit Cars(Color color, QWidget *parent = nullptr);
     void paintEvent(QPaintEvent *event);
 private:
     Color m_color;

mainwindow.cpp

@@ -19,7 +19,7 @@ MainWindow::MainWindow(QWidget *parent) :
     // scrollArea->resize(1800, 800);
     // monitor = new Monitor(this);
     // Cars *car = new Cars(this);
-    ParkingLotWidget *pk = new ParkingLotWidget(this, "D:\\wming\\Documents\\DataStructureProject\\parkinglot_f1.xml");
+    ParkingLotWidget *pk = new ParkingLotWidget(this, "parkinglot_f1.xml");
 	// pk->show();
     // pk->creatMap();
     /*QLabel *label = new QLabel(this);