From 4490a55f31ac82cc60b41466b5c4cec552dcd1e3 Mon Sep 17 00:00:00 2001
From: zcy <290198252@qq.com>
Date: Wed, 19 Jan 2022 10:38:35 +0800
Subject: [PATCH] no message

---
 Qss.cpp | 32 ++++++++++++++++++++++++--------
 Qss.h   | 21 +++++++--------------
 2 files changed, 31 insertions(+), 22 deletions(-)

diff --git a/Qss.cpp b/Qss.cpp
index ce9f7c5..9ffae93 100644
--- a/Qss.cpp
+++ b/Qss.cpp
@@ -247,7 +247,6 @@ void QssMainWindow::OnMaxOrRestore(bool max)
         setMaximumSize(QSize(QWIDGETSIZE_MAX, QWIDGETSIZE_MAX));
         this->m_frame->setMinimumSize(0, 0);
         this->m_frame->setMaximumSize(QSize(QWIDGETSIZE_MAX, QWIDGETSIZE_MAX));
-        QSize sizeHint = parentWidget()->sizeHint();
 
         QDesktopWidget desktop;
         QRect rc = desktop.availableGeometry(-1);
@@ -259,12 +258,23 @@ void QssMainWindow::OnMaxOrRestore(bool max)
         this->setFixedHeight(rc.height() - m_titleBar->height());
     }
 }
-
-void QssMainWindow::DpiChange(qreal dpi)
+// 实际测试切换分辨率会触发这个slot
+void QssMainWindow::PhisycalDpiChange(qreal dpi)
 {
-    qDebug()<<"change dpi of QssMainWindow"<<dpi;
+    qDebug()<<"dpi changed,reason: configuration "<<dpi;
 
 }
+// 实际测试切换分辨率或者修改缩放比率都会触发这个slot
+void QssMainWindow::LogicalDpiChange(qreal dpi)
+{
+    qDebug()<<"dpi changed,reason: configuration "<<dpi;
+    m_dpi_ratio = 96/dpi;
+    qDebug()<<"factor is "<<m_dpi_ratio;
+    auto parent = this->parentWidget();
+    parent->setGeometry(parent->geometry().x(),parent->geometry().y(),
+                      parent->geometry().width()*m_dpi_ratio,
+                      parent->geometry().height()*m_dpi_ratio);
+}
 
 
 QssMainWindow::QssMainWindow(QWidget *parent/* = 0*/, Qt::WindowFlags flags/* = 0*/,float scale)
@@ -317,7 +327,11 @@ QssMainWindow::QssMainWindow(QWidget *parent/* = 0*/, Qt::WindowFlags flags/* =
     if(nullptr != mCurrentScreen){
         connect(mCurrentScreen,
                 SIGNAL(physicalDotsPerInchChanged(qreal)),
-                this,SLOT(DpiChange(qreal)));
+                this,SLOT(PhisycalDpiChange(qreal)));
+
+        connect(mCurrentScreen,
+                SIGNAL(logicalDotsPerInchChanged(qreal)),
+                this,SLOT(LogicalDpiChange(qreal)));
     }
     rangeObjectList(m_frame,0);
     return;
@@ -333,6 +347,11 @@ QWidget *QssMainWindow::TitleBar()
     return m_titleBar;
 }
 
+void QssMainWindow::RangeObject()
+{
+    rangeObjectList(m_frame,0);
+}
+
 void QssMainWindow::DetectDpiChange()
 {
     int screenNum =  qApp->desktop()->screenNumber(this);
@@ -428,7 +447,6 @@ void QssMainWindow::showNormal()
 
 void QssMainWindow::setWindowTitle( QString title )
 {
-    //m_frame->setWindowTitle(title);
     m_titleBar->setTitle(title);
 }
 
@@ -467,8 +485,6 @@ void QssMainWindow::onMouseMoveEvent(QMouseEvent * ev)
        setCursorShape(CalCursorPos(ev->pos(),CalCursorCol(ev->pos())));
     }
     QPoint ptCurrentPos = QCursor::pos();
-    QPoint ptMoveSize = ptCurrentPos - m_ptViewMousePos;
-    QRect rtTempGeometry = this->geometry();
     QRect rtCentralGeo = this->centralWidget()->geometry();
     QRect rtMainWindow = this->geometry();
     setCursor(Qt::ArrowCursor);
diff --git a/Qss.h b/Qss.h
index 38c0ad3..ffe926c 100644
--- a/Qss.h
+++ b/Qss.h
@@ -26,7 +26,9 @@
 class QPushButton;
 class QLabel;
 class QMouseEvent;
+
 #define STANDARD_DPI 96.0
+
 #ifndef WM_DPICHANGED
 #define WM_DPICHANGED 0x02e0
 #endif
@@ -108,19 +110,7 @@ class QssEventFilter
 {
 public:
     virtual bool nativeEventFilter(const QByteArray &eventType, void *message, long *) Q_DECL_OVERRIDE
-    {/*
-        MSG* pMsg = reinterpret_cast<MSG*>(message);
-        if(nullptr != pMsg){
-            switch (pMsg->message)
-            {
-                case WM_DPICHANGED:
-                {
-                    qDebug()<<"DPI CHANGED";
-
-                }
-            }
-        }*/
-        // TODO: filter out or modify msg struct here
+    {
         return false;
     }
 };
@@ -131,7 +121,9 @@ class  QssMainWindow : public QMainWindow
 
 public slots:
     void OnMaxOrRestore(bool max);
-    void DpiChange(qreal);
+    void PhisycalDpiChange(qreal);
+    void LogicalDpiChange(qreal);
+
 public:
     typedef enum{
         EVENT_MOVE = 523,
@@ -140,6 +132,7 @@ public:
     virtual ~QssMainWindow();
 
     QWidget *TitleBar();
+    void RangeObject();
     void DetectDpiChange();
     void ShowMask();
     void HideMask();