1. 增加折扣券，修改相关界面。

task/coupon.cpp

@@ -12,8 +12,9 @@ Coupon::Coupon(QString name, QString code, QString type, double disAmount, doubl
     _type(type),
     _disAmount(disAmount),
     _limitAmount(limitAmount),
-    _limitTime(limitTime),
-    _isCompatible(isCompatible)
+    _discountFactor(1),
+    _isCompatible(isCompatible),
+    _limitTime(limitTime)
 {
 }
 
@@ -38,7 +39,12 @@ void Coupon::paint(QPainter *painter, const QRect &rect, const QPalette &palette
     painter->setPen(pen);
     QFont font("Microsoft YaHei", 30, 500);
     painter->setFont(font);
-    QString disStr = QString::number(this->_disAmount, 'f', 2);
+    QString disStr;
+    if(this->_type == "discount") {
+        disStr = QString::fromLocal8Bit("%1折").arg(this->_discountFactor);
+    } else {
+        disStr = QString::number(this->_disAmount, 'f', 2);
+    }
     QRect topRect(rect.x(), rect.y(), rect.width(), rect.height()/2);
     painter->drawText(topRect, Qt::AlignCenter, disStr);
     // ￥标识
@@ -48,7 +54,10 @@ void Coupon::paint(QPainter *painter, const QRect &rect, const QPalette &palette
     painter->setFont(font);
     int flagWidth = painter->fontMetrics().width(flagStr);
     int flagHeight = painter->fontMetrics().height();
+    if(this->_type != "discount")
+    {
         painter->drawText(rect.x()+(rect.width()-fontWidth)/2-flagWidth, topRect.center().y()+flagHeight, flagStr);
+    }
     // 满额条件
     pen.setColor(QColor(127,127,127));
     painter->setPen(pen);

task/coupon.h

@@ -22,12 +22,15 @@ public:
     double disAmount() const {return _disAmount;}
     double limitAmount() const {return _limitAmount;}
     bool isCompatible() const {return _isCompatible;}
+    bool discountFactor() const {return _discountFactor;}
+    void setDiscountFactor(double discountFactor) {this->_discountFactor = discountFactor;}
 private:
     QString _name;
     QString _code;
     QString _type;
     double _disAmount;
     double _limitAmount;
+    double _discountFactor;
     bool _isCompatible;
     QString _limitTime;
 };

task/taskothers.cpp

@@ -29,6 +29,8 @@ void TaskCoupon::packageServerReq()
 
 void TaskCoupon::packagePOSRsp()
 {
+    int canDisAmount = session()->data(PosProps.OrderAmount).toInt() - session()->data(PosProps.PaidAmount).toInt() - session()->data(PosProps.UndisAmount).toInt();
+
     QMap<QString, QVariant> couponMap;
     foreach (auto value, getServerJsonValue(PosProps.CouponList).toArray())
     {
@@ -39,11 +41,20 @@ void TaskCoupon::packagePOSRsp()
         int type = couponOb[ServerProps(PosProps.Coupon_type)].toInt();
         QString limitTime = couponOb["expiration_date"].toString();
 
+        if(amount<1)    // 折扣券
+        {
+            Coupon c(desc, code, "discount", (1-amount)*canDisAmount/100, 0, limitTime, false);
+            c.setDiscountFactor(amount*10);
+            QVariant v;
+            v.setValue(c);
+            couponMap[code] = v;
+        } else {
             Coupon c(desc, code, QString::number(type), amount, 0, limitTime, false);
             QVariant v;
             v.setValue(c);
             couponMap[code] = v;
         }
+    }
     session()->addData(PosProps.CouponMap, couponMap);
 }
 

task/taskpay.cpp

@@ -34,6 +34,9 @@ QByteArray TaskPay::doTask()
         this->_session = preTask->session();
     }
 
+    session()->addData(PosProps.OrderAmount, getPosJsonValue(PosProps.OrderAmount).toInt());
+    session()->addData(PosProps.PaidAmount, getPosJsonValue(PosProps.PaidAmount).toInt());
+    session()->addData(PosProps.UndisAmount, getPosJsonValue(PosProps.UndisAmount).toInt());
 
     couponThread = new TaskCouponThread(posReqJsonObj, _session, this);
     couponThread->start();
@@ -56,8 +59,6 @@ void TaskPay::onGetCoupons(Session* session)
 void TaskPay::setWindow()
 {
     _window = new FMVipOrder;
-    session()->addData(PosProps.OrderAmount, getPosJsonValue(PosProps.OrderAmount).toInt());
-    session()->addData(PosProps.PaidAmount, getPosJsonValue(PosProps.PaidAmount).toInt());
 
     connect(qobject_cast<FMVipOrder*>(_window), SIGNAL(pay()), this, SLOT(onPay()));
 }

windows/fmviporder.cpp

@@ -40,6 +40,9 @@ bool FMVipOrder::initWnd(Session *session)
     session->addData(PosProps.NeedAmount, needPay);
     QString needPay_str = QString::number(needPay);
 
+    double undisAmount = session->data(PosProps.UndisAmount).toInt()/100.0;
+    ui->undis_label->setText(DOUBLE_STR(undisAmount));
+
     // 积分可抵扣金额（分）
     int score_value = session->data(PosProps.Score).toInt();
     orderInfo = new FMVipOrder::OrderInfo(amount_str, score_value, needPay_str);

windows/forms/fmviporder.ui

@@ -84,14 +84,14 @@
   border-top: 0px solid silver;
 }
 
-#price_desc_label {
+#price_desc_label,#undis_desc_label {
   background: white;
   max-width: 180px;min-width: 180px;
   color: rgb(120,120,120);
   border: 1 solid silver;
   border-top: 0 solid silver;
 }
-#price_label {
+#price_label,#undis_label {
   font: 42px "Microsoft YaHei";
   padding-left: 50px;
   color: rgb(50,50,50);
@@ -513,6 +513,23 @@
         </property>
        </widget>
       </item>
+      <item>
+       <widget class="QLabel" name="undis_desc_label">
+        <property name="text">
+         <string>不可优惠</string>
+        </property>
+        <property name="alignment">
+         <set>Qt::AlignCenter</set>
+        </property>
+       </widget>
+      </item>
+      <item>
+       <widget class="QLabel" name="undis_label">
+        <property name="text">
+         <string>0.00</string>
+        </property>
+       </widget>
+      </item>
      </layout>
     </widget>
    </item>