QCheckBox did not have a minimumSizeHint()

Fortunately the *default* horizontal size policy was
QSizePolicy::Minimum. However if the size policy was set to for instance
Preferred it could shrink down until it disappeared.
The following patch will do the same as QLabel does it:
sizeHint is the same as minimumSizeHint.

Task-number: QTBUG-2606
Reviewed-by: Gabriel

3 files changed, 17 insertions, 0 deletions

diff --git a/src/gui/widgets/qcheckbox.cpp b/src/gui/widgets/qcheckbox.cpp
index bc0900e..64b47b4 100644
--- a/src/gui/widgets/qcheckbox.cpp
+++ b/src/gui/widgets/qcheckbox.cpp
@@ -300,6 +300,15 @@ QSize QCheckBox::sizeHint() const
     return d->sizeHint;
 }
 
+
+/*!
+    \reimp
+*/
+QSize QCheckBox::minimumSizeHint() const
+{
+    return sizeHint();
+}
+
 /*!
     \reimp
 */
diff --git a/src/gui/widgets/qcheckbox.h b/src/gui/widgets/qcheckbox.h
index 7b6292d..95da261 100644
--- a/src/gui/widgets/qcheckbox.h
+++ b/src/gui/widgets/qcheckbox.h
@@ -65,6 +65,7 @@ public:
 
 
     QSize sizeHint() const;
+    QSize minimumSizeHint() const;
 
     void setTristate(bool y = true);
     bool isTristate() const;
diff --git a/tests/auto/qcheckbox/tst_qcheckbox.cpp b/tests/auto/qcheckbox/tst_qcheckbox.cpp
index d16370c..24d78fe 100644
--- a/tests/auto/qcheckbox/tst_qcheckbox.cpp
+++ b/tests/auto/qcheckbox/tst_qcheckbox.cpp
@@ -92,6 +92,7 @@ private slots:
     void setAccel();
     void group();
     void foregroundRole();
+    void minimumSizeHint();
 
 protected slots:
     void onClicked();
@@ -425,5 +426,11 @@ void tst_QCheckBox::foregroundRole()
     QVERIFY(testWidget->foregroundRole() == QPalette::WindowText);
 }
 
+void tst_QCheckBox::minimumSizeHint()
+{
+    QCheckBox box(tr("CheckBox's sizeHint is the same as it's minimumSizeHint"));
+    QCOMPARE(box.sizeHint(), box.minimumSizeHint());
+}
+
 QTEST_MAIN(tst_QCheckBox)
 #include "tst_qcheckbox.moc"