add number of parking space

DataStructureProject.pro

@@ -36,7 +36,7 @@ SOURCES += \
     monitor.cpp \
     parkinglot.cpp \
     ParkingLotWidget.cpp \
-    ParkingSpaceInfo.cpp \
+    ParkingSpaceWidget.cpp \
     Road.cpp
 
 HEADERS += \
@@ -49,7 +49,7 @@ HEADERS += \
     monitor.h \
     parkinglot.h \
     ParkingLotWidget.h \
-    ParkingSpaceInfo.h \
+    ParkingSpaceWidget.h \
     Road.h
 
 FORMS += \

ParkingLotWidget.cpp

@@ -1,12 +1,12 @@
 #include "ParkingLotWidget.h"
-
+#include "ParkingSpaceWidget.h"
 #include <QFile>
 #include <QMessageBox>
 #include <QDomDocument>
 #include <QDebug>
 #include "Road.h"
-#include "ParkingSpaceWidget.h"
 #include <QPainter>
+#include <QPaintEvent>
 
 ParkingLotWidget::ParkingLotWidget(QWidget *parent, const QString& xml) : QWidget(parent)
 {
@@ -18,7 +18,13 @@ ParkingLotWidget::ParkingLotWidget(QWidget *parent, const QString& xml) : QWidge
 
 void ParkingLotWidget::paintEvent(QPaintEvent * event)
 {
-	
+    event->ignore();
+}
+
+int ParkingLotWidget::addSpace(ParkingSpaceWidget *sp)
+{
+    m_spaceList.push_back(sp);
+    return m_spaceList.size();
 }
 
 ParkingLotWidget::~ParkingLotWidget()

ParkingLotWidget.h

@@ -1,18 +1,26 @@
-#pragma once
+#ifndef PARKING_LOT_WIDGET
+#define PARKING_LOT_WIDGET
 #include <QWidget>
 #include <QString>
 #include <QVBoxLayout>
 #include <QDomDocument>
+#include <vector>
+#include "ParkingSpaceWidget.h"
+class ParkingSpaceWidget;  // 先声明类，防止循环include
+
 class ParkingLotWidget: public QWidget
 {
 	Q_OBJECT
 public:
 	explicit ParkingLotWidget(QWidget* parent, const QString& xml);
 	void paintEvent(QPaintEvent* event) override;
+    int addSpace(ParkingSpaceWidget* sp);
 	~ParkingLotWidget();
 private:
-	void parse_xml(const QString& xml);
+    std::vector<ParkingSpaceWidget*> m_spaceList;
+    void parse_xml(const QString& xml);
 	QBoxLayout *parseLayout(const QDomElement& element);
 	QBoxLayout *layout = nullptr;
 };
 
+#endif

ParkingSpaceWidget.cpp

@@ -1,8 +1,9 @@
 #include "ParkingSpaceWidget.h"
 #include <QPainter>
 #include <QDebug>
+#include "ParkingLotWidget.h"
 
-ParkingSpaceWidget::ParkingSpaceWidget(QWidget* parent, const QString &dir)
+ParkingSpaceWidget::ParkingSpaceWidget(ParkingLotWidget* parent, const QString &dir): QWidget(parent)
 {
 	direction d = {};
 	const char c = dir.at(0).unicode();
@@ -30,9 +31,10 @@ ParkingSpaceWidget::ParkingSpaceWidget(QWidget* parent, const QString &dir)
 		setMaximumSize(60, 40);
 		break;
 	}
+    number = parent->addSpace(this);
 }
 
-QBoxLayout *ParkingSpaceWidget::makeParkingSapceGroup(QWidget* parent, const QString& dir, int n, const QString & expend)
+QBoxLayout *ParkingSpaceWidget::makeParkingSapceGroup(ParkingLotWidget* parent, const QString& dir, int n, const QString & expend)
 {
 	QBoxLayout *layout;
 	if (expend == "down")
@@ -53,6 +55,8 @@ QBoxLayout *ParkingSpaceWidget::makeParkingSapceGroup(QWidget* parent, const QSt
 void ParkingSpaceWidget::paintEvent(QPaintEvent * event)
 {
 	QPainter painter(this);
+    painter.setPen(Qt::black);
+    painter.drawText(20, 25, QString::number(number));
 	painter.setPen(Qt::white);
 	painter.setBrush(Qt::white);
 	painter.translate(30, 20);

ParkingSpaceWidget.h

@@ -1,16 +1,22 @@
-#pragma once
+#ifndef PARKING_SPACE_WIDGET
+#define PARKING_SPACE_WIDGET
 #include <QWidget>
 #include <QLayout>
+#include "ParkingLotWidget.h"
+class ParkingLotWidget;
+
 class ParkingSpaceWidget: public QWidget
 {
 	Q_OBJECT
 public:
 	enum direction{N, S, E, W};
-	ParkingSpaceWidget(QWidget* parent, const QString &dir);
-	static QBoxLayout*  makeParkingSapceGroup(QWidget* parent, const QString& dir, int n, const QString &expend);
-	void paintEvent(QPaintEvent* event) override;
+    ParkingSpaceWidget(ParkingLotWidget* parent, const QString &dir);
+    static QBoxLayout*  makeParkingSapceGroup(ParkingLotWidget* parent, const QString& dir, int n, const QString &expend);
+    void paintEvent(QPaintEvent* event) override;
 	~ParkingSpaceWidget();
 private:
+    int number;
 	direction dir;
 };
 
+#endif