fix: Optimize image saving performance to clipboard on LoongArch64

Improved local image saving speed on LoongArch64 architecture by
configuring pixmap quality settings. Testing shows quality=60 provides
optimal balance between speed and image fidelity.

pick from: 953d402

Log: Enhance LoongArch64 image save performance
Bug: https://pms.uniontech.com/bug-view-326039.html

Author: add-uos

src/main_window.cpp

@@ -2473,6 +2473,10 @@ void MainWindow::save2Clipboard(const QPixmap &pix)
         qWarning() << __FUNCTION__ << "Copy Null Pix To Clipboard!";
         return;
     }
+    int quality = -1;
+    if (QSysInfo::currentCpuArchitecture().startsWith("loongarch64")) {
+        quality = 60;
+    }
     if (Utils::is3rdInterfaceStart == false) {
         if (DSysInfo::minorVersion().toInt() >= 1070) {
             // check if save to clipboard finished
@@ -2501,11 +2505,11 @@ void MainWindow::save2Clipboard(const QPixmap &pix)
             QByteArray bytes;
             QBuffer buffer(&bytes);
             buffer.open(QIODevice::WriteOnly);
-            pix.save(&buffer, "PNG");
-            // wayland下只传输一种图片数据到剪切板
+            pix.save(&buffer, "PNG", quality);
+            //wayland下只传输一种图片数据到剪切板
             t_imageData->setData("image/png", bytes);
             QClipboard *cb = qApp->clipboard();
-            qCInfo(dsrApp) << __FUNCTION__ << __LINE__ << "将数据传递到剪贴板！";
+            qCInfo(dsrApp) << __FUNCTION__ << __LINE__ << "将数据传递到剪贴板！保存质量: " << quality;
             cb->setMimeData(t_imageData, QClipboard::Clipboard);
             // wayland下添加超时机制，1s后退出事件循环
             // DelayTime *tempTimer = new DelayTime(3000);
@@ -2538,11 +2542,11 @@ void MainWindow::save2Clipboard(const QPixmap &pix)
             QByteArray bytes;
             QBuffer buffer(&bytes);
             buffer.open(QIODevice::WriteOnly);
-            pix.save(&buffer, "PNG");
+            pix.save(&buffer, "PNG", quality);
             t_imageData->setData("image/png", bytes);
 
             QClipboard *cb = qApp->clipboard();
-            qCInfo(dsrApp) << __FUNCTION__ << __LINE__ << "将数据传递到剪贴板！";
+            qCInfo(dsrApp) << __FUNCTION__ << __LINE__ << "将数据传递到剪贴板！保存质量: " << quality;
             cb->setMimeData(t_imageData, QClipboard::Clipboard);
             qCDebug(dsrApp) << "Whether the data passed to the clipboard is empty? " << t_imageData->imageData().isNull();
         }