QMargins(F): add support for structured binding

[ChangeLog][QtCore][QMargins] QMargins is usable in a structured
binding.

[ChangeLog][QtCore][QMarginsF] QMarginsF is usable in a structured
binding.

Change-Id: I0c501847b9377c47bd0e63da3735792075bd0079
Reviewed-by: Thiago Macieira <thiago.macieira@intel.com>

1 files changed, 56 insertions, 0 deletions

diff --git a/tests/auto/corelib/tools/qmargins/tst_qmargins.cpp b/tests/auto/corelib/tools/qmargins/tst_qmargins.cpp
index 6b89ba0b81..8d71ccf7ab 100644
--- a/tests/auto/corelib/tools/qmargins/tst_qmargins.cpp
+++ b/tests/auto/corelib/tools/qmargins/tst_qmargins.cpp
@@ -52,6 +52,8 @@ private slots:
 #ifndef QT_NO_DEBUG_STREAM
     void debugStreamCheckF();
 #endif
+
+    void structuredBinding();
 };
 
 // Testing get/set functions
@@ -283,5 +285,59 @@ void tst_QMargins::debugStreamCheckF()
 }
 #endif
 
+void tst_QMargins::structuredBinding()
+{
+    {
+        QMargins m(1, 2, 3, 4);
+        auto [left, top, right, bottom] = m;
+        QCOMPARE(left, 1);
+        QCOMPARE(top, 2);
+        QCOMPARE(right, 3);
+        QCOMPARE(bottom, 4);
+    }
+    {
+        QMargins m(1, 2, 3, 4);
+        auto &[left, top, right, bottom] = m;
+        QCOMPARE(left, 1);
+        QCOMPARE(top, 2);
+        QCOMPARE(right, 3);
+        QCOMPARE(bottom, 4);
+
+        left = 10;
+        top = 20;
+        right = 30;
+        bottom = 40;
+        QCOMPARE(m.left(), 10);
+        QCOMPARE(m.top(), 20);
+        QCOMPARE(m.right(), 30);
+        QCOMPARE(m.bottom(), 40);
+    }
+    {
+        QMarginsF m(1.0, 2.0, 3.0, 4.0);
+        auto [left, top, right, bottom] = m;
+        QCOMPARE(left, 1.0);
+        QCOMPARE(top, 2.0);
+        QCOMPARE(right, 3.0);
+        QCOMPARE(bottom, 4.0);
+    }
+    {
+        QMarginsF m(1.0, 2.0, 3.0, 4.0);
+        auto &[left, top, right, bottom] = m;
+        QCOMPARE(left, 1.0);
+        QCOMPARE(top, 2.0);
+        QCOMPARE(right, 3.0);
+        QCOMPARE(bottom, 4.0);
+
+        left = 10.0;
+        top = 20.0;
+        right = 30.0;
+        bottom = 40.0;
+        QCOMPARE(m.left(), 10.0);
+        QCOMPARE(m.top(), 20.0);
+        QCOMPARE(m.right(), 30.0);
+        QCOMPARE(m.bottom(), 40.0);
+    }
+}
+
 QTEST_APPLESS_MAIN(tst_QMargins)
 #include "tst_qmargins.moc"