Set correct content size for tool tip label

The tool tip content size uses an incorrect content margin, when it's
constructed. This content margin has been reset to correct value when
tool tip is positioned using placeTip(). But after that, the content
size not been recalculated.

This patch triggers updatesSize() to calculate content size with
updated content margin values.

Fixes: QTBUG-119752
Pick-to: 6.7 6.6 6.5
Change-Id: I454c8528505686f2724b897e4002f78f3049149a
Reviewed-by: Qt CI Bot <[email protected]>
Reviewed-by: Volker Hilsheimer <[email protected]>

2 files changed, 31 insertions, 3 deletions

diff --git a/src/widgets/kernel/qtooltip.cpp b/src/widgets/kernel/qtooltip.cpp
index 2800f65ac62..90c9e6dccbb 100644
--- a/src/widgets/kernel/qtooltip.cpp
+++ b/src/widgets/kernel/qtooltip.cpp
@@ -356,10 +356,12 @@ void QTipLabel::placeTip(const QPoint &pos, QWidget *w)
         if (w) {
             connect(w, SIGNAL(destroyed()),
                 QTipLabel::instance, SLOT(styleSheetParentDestroyed()));
-            // QTBUG-64550: A font inherited by the style sheet might change the size,
-            // particular on Windows, where the tip is not parented on a window.
-            QTipLabel::instance->updateSize(pos);
         }
+        // QTBUG-64550: A font inherited by the style sheet might change the size,
+        // particular on Windows, where the tip is not parented on a window.
+        // The updatesSize() also makes sure that the content size be updated with
+        // correct content margin.
+        QTipLabel::instance->updateSize(pos);
     }
 #endif //QT_NO_STYLE_STYLESHEET
 
diff --git a/tests/auto/widgets/kernel/qtooltip/tst_qtooltip.cpp b/tests/auto/widgets/kernel/qtooltip/tst_qtooltip.cpp
index 282eacd2ef5..082d30c67b8 100644
--- a/tests/auto/widgets/kernel/qtooltip/tst_qtooltip.cpp
+++ b/tests/auto/widgets/kernel/qtooltip/tst_qtooltip.cpp
@@ -26,6 +26,7 @@ private slots:
     void setPalette();
     void qtbug64550_stylesheet();
     void dontCrashOutsideScreenGeometry();
+    void marginSetWithStyleSheet();
 };
 
 void tst_QToolTip::init()
@@ -214,5 +215,30 @@ void tst_QToolTip::dontCrashOutsideScreenGeometry() {
     QToolTip::hideText();
 }
 
+void tst_QToolTip::marginSetWithStyleSheet()
+{
+    const char *toolTipText = "Test Tool Tip";
+
+    qApp->setStyleSheet("QToolTip {font-size: 8px; margin: 5px;}");
+    QToolTip::showText(QGuiApplication::primaryScreen()->availableGeometry().topLeft(), toolTipText);
+    QTRY_VERIFY(QToolTip::isVisible());
+    QWidget *toolTip = findToolTip();
+    QVERIFY(toolTip);
+    QTRY_VERIFY(toolTip->isVisible());
+    int toolTipHeight = toolTip->size().height();
+    qApp->setStyleSheet(QString());
+    QToolTip::hideText();
+
+    qApp->setStyleSheet("QToolTip {font-size: 8px; margin: 10px;}");
+    QToolTip::showText(QGuiApplication::primaryScreen()->availableGeometry().topLeft(), toolTipText);
+    QTRY_VERIFY(QToolTip::isVisible());
+    toolTip = findToolTip();
+    QVERIFY(toolTip);
+    QTRY_VERIFY(toolTip->isVisible());
+    QCOMPARE_LE(toolTip->size().height(), toolTipHeight + 10);
+    qApp->setStyleSheet(QString());
+    QToolTip::hideText();
+}
+
 QTEST_MAIN(tst_QToolTip)
 #include "tst_qtooltip.moc"