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 <qt_ci_bot@qt-project.org>
Reviewed-by: Volker Hilsheimer <volker.hilsheimer@qt.io>

1 files changed, 26 insertions, 0 deletions

diff --git a/tests/auto/widgets/kernel/qtooltip/tst_qtooltip.cpp b/tests/auto/widgets/kernel/qtooltip/tst_qtooltip.cpp
index 282eacd2ef..082d30c67b 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"