把停车场和ui连接起来

monitor.cpp

@@ -9,34 +9,17 @@ Monitor::Monitor(QWidget *parent) :
     ui(new Ui::Monitor)
 {
     ui->setupUi(this);
-    QObject::connect(ui->downStairButton, &QPushButton::clicked, [&]() {
-        if (m_currentFloor > 0) {
-            m_currentFloor -= 1;
-            showParkinglot();
-        }
-        if (m_currentFloor == 0)
-            ui->downStairButton->setEnabled(false);
-        if (m_currentFloor == m_parkinglots.size() - 2)
-            ui->upStairButton->setEnabled(true);
-    });
-    QObject::connect(ui->upStairButton, &QPushButton::clicked, [&]() {
-        if (m_currentFloor < m_parkinglots.size() - 1) {
-            m_currentFloor += 1;
-            showParkinglot();
-        }
-        if (m_currentFloor == m_parkinglots.size() - 1)
-            ui->upStairButton->setEnabled(false);
-        if (m_currentFloor == 1)
-            ui->downStairButton->setEnabled(true);
-    });
-    if (m_currentFloor == 0)  // 如果默认楼层就是顶层或者最下一层，把相应的按钮disable
-        ui->downStairButton->setEnabled(false);
-    else if (m_currentFloor == m_parkinglots.size() - 1)
-        ui->upStairButton->setEnabled(false);
+    ParkingLotItem *pk = new ParkingLotItem(Q_NULLPTR, this);
+    QObject::connect(ui->downStairButton, &QPushButton::clicked, pk, &ParkingLotItem::showDownStairFloor);
+    QObject::connect(ui->upStairButton, &QPushButton::clicked, pk, &ParkingLotItem::showUpStairFloor);
+    QObject::connect(pk, &ParkingLotItem::enableUpButton, ui->upStairButton, &QPushButton::setEnabled);
+    QObject::connect(pk, &ParkingLotItem::enableDownButton, ui->downStairButton, &QPushButton::setEnabled);
+    QObject::connect(pk, &ParkingLotItem::setCapacity, ui->capacity, &QLabel::setText);
+    QObject::connect(pk, &ParkingLotItem::setLoad, ui->load, &QLabel::setText);
 
+    pk->showParkingLot();
     QGraphicsScene *scene = new QGraphicsScene(this);  // 创建场景
     ui->view->setScene(scene);
-    ParkingLotItem *pk = new ParkingLotItem(Q_NULLPTR);
     scene->addItem(pk);
 }
 
@@ -44,18 +27,3 @@ Monitor::~Monitor()
 {
     delete ui;
 }
-
-void Monitor::showParkinglot()
-{
-    if (m_parkinglots.at(m_currentFloor) == nullptr) {
-        m_parkinglots[m_currentFloor] = new ParkingLotWidget(this, m_xmlPath.at(m_currentFloor));  // lazy
-        // ui->parkinglotView->addWidget(m_parkinglots.at(m_currentFloor));  // 把当前对象添加进layout
-        m_parkinglots[m_currentFloor]->move(10, 10);
-    }
-    ui->currentFloor->setText("<center>" + m_parkinglots.at(m_currentFloor)->getName() + "</center>"); // 文字
-
-    for (auto p = m_parkinglots.begin(); p != m_parkinglots.end(); p++)
-        if (*p != nullptr)
-            (*p)->hide();
-    m_parkinglots.at(m_currentFloor)->show();
-}

monitor.h

@@ -20,12 +20,6 @@ public:
 
 private:
     Ui::Monitor *ui;
-    // TODO: 动态修改
-    std::vector<ParkingLotWidget*> m_parkinglots = {nullptr, nullptr};  // lazy
-    std::vector<QString> m_xmlPath;// = {"parkinglot_b1.xml", "parkinglot_f1.xml"};
-    uint m_currentFloor = 1;  // 默认为地上一层
-
-    void showParkinglot(void);
 };
 
 #endif // MONITOR_H

monitor.ui

@@ -125,7 +125,7 @@
          </widget>
         </item>
         <item>
-         <widget class="QLabel" name="allSpace">
+         <widget class="QLabel" name="capacity">
           <property name="text">
            <string>100</string>
           </property>
@@ -152,7 +152,7 @@
          </widget>
         </item>
         <item>
-         <widget class="QLabel" name="leftSpace">
+         <widget class="QLabel" name="load">
           <property name="text">
            <string>90</string>
           </property>

parkingLotItem.cpp

@@ -3,7 +3,8 @@
 #include <QDebug>
 #include <QPainter>
 
-ParkingLotItem::ParkingLotItem(QGraphicsPixmapItem *parent): QGraphicsPixmapItem(parent)
+ParkingLotItem::ParkingLotItem(QGraphicsPixmapItem *parent, QObject* objectParent):
+    QObject(objectParent), QGraphicsPixmapItem(parent)
 {
     // 找到xml文件路径
     QString filePath = __FILE__;
@@ -23,8 +24,8 @@ ParkingLotItem::ParkingLotItem(QGraphicsPixmapItem *parent): QGraphicsPixmapItem
         m_pixmap.push_back(new QPixmap(widget->size()));  // 创建一层的pixmap
         qDebug() << "widget size x=" << widget->size().width() << " y=" <<widget->size().height();
         widget->render(m_pixmap[i]);  // 渲染pixmap
-        m_max_capacity.push_back(widget->getCapacity());  // 获得这一层的最大容量
-        m_cars[i].resize(m_max_capacity.at(i));  // 初始化一层的车位
+        m_capacity.push_back(widget->getCapacity());  // 获得这一层的最大容量
+        m_cars[i].resize(m_capacity.at(i));  // 初始化一层的车位
         m_name.push_back(widget->getName());  // 这一层的名字
         m_num_of_cars.push_back(0);  // 初始停车数量为0
         delete widget;  // 删除widget
@@ -33,7 +34,6 @@ ParkingLotItem::ParkingLotItem(QGraphicsPixmapItem *parent): QGraphicsPixmapItem
         painter.setPen(Qt::red);
         painter.drawRect(0, 0, m_pixmap[i]->width() - 1, m_pixmap[i]->height() - 1);
     }
-    showParkingLot(1);
 }
 
 void ParkingLotItem::showParkingLot(uint pos)
@@ -43,4 +43,33 @@ void ParkingLotItem::showParkingLot(uint pos)
         return;
     }
     setPixmap(*m_pixmap.at(pos));
+    emit setCapacity(QString::number(m_capacity.at(pos)));
+    emit setLoad(QString::number(m_capacity.at(pos) - m_num_of_cars.at(pos)));
+}
+
+void ParkingLotItem::showParkingLot()
+{
+    showParkingLot(m_current_floor);
+}
+
+void ParkingLotItem::showDownStairFloor()
+{
+    if (m_current_floor == m_num_of_layer - 1)  // 当前是最顶层
+        emit enableUpButton(true);
+    if (m_current_floor == 1)
+        emit enableDownButton(false);  // 到底
+    if (m_current_floor > 0)
+        --m_current_floor;
+    showParkingLot(m_current_floor);
+}
+
+void ParkingLotItem::showUpStairFloor()
+{
+    if (m_current_floor == 0)
+        emit enableDownButton(true);
+    if (m_current_floor == m_num_of_layer - 2)
+        emit enableUpButton(false);
+    if (m_current_floor < m_num_of_layer - 1)
+        ++ m_current_floor;
+    showParkingLot(m_current_floor);
 }

parkingLotItem.h

@@ -7,14 +7,18 @@
 #include <QQueue>
 #include "car.h"
 
-class ParkingLotItem: public QGraphicsPixmapItem
+class ParkingLotItem: public QObject, public QGraphicsPixmapItem
 {
+    Q_OBJECT
 public:
-    ParkingLotItem(QGraphicsPixmapItem* parent);
+    explicit ParkingLotItem(QGraphicsPixmapItem* itemParent, QObject* objectParent);
     void showParkingLot(uint pos);
+    void showParkingLot(void);
+    void showDownStairFloor(void);
+    void showUpStairFloor(void);
 private:
     QVector<QPixmap*> m_pixmap;  // 每一层的pixmap
-    QVector<int> m_max_capacity;  // 每一层的容量
+    QVector<int> m_capacity;  // 每一层的容量
     QVector<int> m_num_of_cars;  // 每一层当前停的车数量
     QVector<QVector<Car*> > m_cars;  // 停在每一层的车
     QVector<QQueue<Car*> >m_waitting; // 在每个入口等待的车
@@ -22,6 +26,12 @@ private:
     QStringList m_name;  // 每一层的名字
     const uint m_num_of_layer = 2;  // 总层数
     const uint m_num_of_entry = 2;  // 入口数
+    uint m_current_floor = 1; // 当前楼层，默认为1楼（按照从下往上递增，值与实际楼层无关）
+signals:
+    void enableUpButton(bool);
+    void enableDownButton(bool);
+    void setCapacity(const QString&);
+    void setLoad(const QString&);
 };
 
 #endif // PARKINGLOTITEM_H