fix(shot): dynamically calculate size tips dimensions based on font size

Use fontMetrics() to compute width and height instead of hardcoded
setFixedSize(90, 30), ensuring size tips display correctly on different
font sizes and screen scaling ratios (e.g., 125% scale with font size 20).

bug: https://pms.uniontech.com/bug-view-346697.html

Author: dengzhongyuan365-dev

src/widgets/toptips.cpp

@@ -22,7 +22,6 @@ TopTips::TopTips(DWidget *parent)
     : QLabel(parent)
 {
     qCDebug(dsrApp) << "TopTips constructor called.";
-    setFixedSize(90, 30);
     setAttribute(Qt::WA_TransparentForMouseEvents, true);
 //    this->setStyleSheet(" TopTips { background-color: transparent;"
 //                        "border-image: url(:/resources/images/action/sizetip.png)  no-repeat;"
@@ -46,15 +45,17 @@ void TopTips::setContent(const QSize &size)
     if(m_showRecorderTips && size.width() * size.height() > 1920 * 1080 && size.width() != m_width && size.height() != m_height) {
         // 1920 / 1080 = w / h
         // w h 等比缩放
-        setFixedSize(500, 30);
         int h = static_cast<int>(sqrt(1920.0 * 1080 * size.height() / size.width()));
         int w = static_cast<int>(sqrt(1920.0 * 1080 * size.width() / size.height()));
         QString recorderTips = tr(" Adjust the recording area within %1*%2 to get better video effect");
         qCDebug(dsrApp) << "Setting content with recording area adjustment tip:" << w << "x" << h;
-        setText(text + recorderTips.arg(w).arg(h));
+        QString fullText = text + recorderTips.arg(w).arg(h);
+        setText(fullText);
+        setFixedSize(fontMetrics().horizontalAdvance(fullText), fontMetrics().boundingRect(fullText).height());
     } else {
         qCDebug(dsrApp) << "Setting content size:" << size;
         setText(text);
+        setFixedSize(fontMetrics().horizontalAdvance(text), fontMetrics().boundingRect(text).height());
     }
 }