add dpi

Qss.cpp

@@ -1789,8 +1789,38 @@ int QSSASyncProcess::Start(void *p)
     return 0;
 }
 
+QThread &QSSASyncProcess::Thread()
+{
+    return mThread;
+}
+
 void QSSASyncProcess::Run(void *)
 {
     emit(Done());
 }
 
+
+uint16_t CurrentDPI(QWidget* widget,int monitor)
+{
+    float dpi = 1.0;
+    int screenNum =  qApp->desktop()->screenNumber(widget); //this 表示当前的窗口 QWidget类型
+    auto screens = qApp->screens();
+    qDebug()<<"screenNum"<<screenNum<<screens.size();
+    if(screenNum >= 0){
+        QScreen* screen = qApp->screens().at(monitor);
+        dpi = screen->physicalDotsPerInch();
+    }
+    qDebug()<<dpi;
+
+    int currentScreenWidth = QApplication::desktop()->width();
+    int currentScreenHeight = QApplication::desktop()->height();
+//或者
+    QDesktopWidget* desktopWidget = QApplication::desktop();
+    //获取可用桌面大小
+    QRect deskRect = desktopWidget->availableGeometry();
+    //获取设备屏幕大小
+    QRect screenRect = desktopWidget->screenGeometry();
+    auto screenX = screenRect.width();
+    auto screenY = screenRect.height();
+    return dpi;
+}

Qss.h

@@ -122,6 +122,8 @@ public:
     QssPushButton(QWidget *parent,QString objName);
 
 };
+// 获取当前dpi
+uint16_t CurrentDPI(QWidget* widget,int monitor);
 
 class  QssTtitleBar : public QWidget
 {
@@ -500,6 +502,7 @@ public:
     QSSASyncProcess(QWidget *parent = nullptr);
     ~QSSASyncProcess();
     int Start(void*);
+    QThread &Thread();
 signals:
     void DonePercent(int);
     void Done();