Label: add support for background insets

Same as 5adce042 for QQuickControl.

[ChangeLog][Controls][Label] Added topInset, bottomInset, leftInset,
and rightInset properties to control the geometry of the background
similarly to how paddings control the geometry of the contentItem.

Change-Id: I853efcdd6be1d3acfb067128b6195c253350de8d
Reviewed-by: Mitch Curtis <mitch.curtis@qt.io>

1 files changed, 152 insertions, 0 deletions

diff --git a/tests/auto/controls/data/tst_label.qml b/tests/auto/controls/data/tst_label.qml
index 69d273a7..8183f088 100644
--- a/tests/auto/controls/data/tst_label.qml
+++ b/tests/auto/controls/data/tst_label.qml
@@ -138,5 +138,157 @@ TestCase {
         control.background = rectangle.createObject(control)
         compare(control.background.width, control.width)
         compare(control.background.height, control.height)
+
+        // change implicit size (QTBUG-66455)
+        control.background.implicitWidth = 160
+        control.background.implicitHeight = 120
+        compare(control.background.width, control.width)
+        compare(control.background.height, control.height)
+    }
+
+    function test_inset() {
+        var control = createTemporaryObject(label, testCase, {background: rectangle.createObject(control)})
+        verify(control)
+
+        var topInsetSpy = createTemporaryObject(signalSpy, testCase, {target: control, signalName: "topInsetChanged"})
+        verify(topInsetSpy.valid)
+
+        var leftInsetSpy = createTemporaryObject(signalSpy, testCase, {target: control, signalName: "leftInsetChanged"})
+        verify(leftInsetSpy.valid)
+
+        var rightInsetSpy = createTemporaryObject(signalSpy, testCase, {target: control, signalName: "rightInsetChanged"})
+        verify(rightInsetSpy.valid)
+
+        var bottomInsetSpy = createTemporaryObject(signalSpy, testCase, {target: control, signalName: "bottomInsetChanged"})
+        verify(bottomInsetSpy.valid)
+
+        var topInsetChanges = 0
+        var leftInsetChanges = 0
+        var rightInsetChanges = 0
+        var bottomInsetChanges = 0
+
+        compare(control.topInset, 0)
+        compare(control.leftInset, 0)
+        compare(control.rightInset, 0)
+        compare(control.bottomInset, 0)
+
+        control.width = 100
+        control.height = 100
+        compare(control.background.x, 0)
+        compare(control.background.y, 0)
+        compare(control.background.width, 100)
+        compare(control.background.height, 100)
+
+        control.topInset = 10
+        compare(control.topInset, 10)
+        compare(control.leftInset, 0)
+        compare(control.rightInset, 0)
+        compare(control.bottomInset, 0)
+        compare(topInsetSpy.count, ++topInsetChanges)
+        compare(leftInsetSpy.count, leftInsetChanges)
+        compare(rightInsetSpy.count, rightInsetChanges)
+        compare(bottomInsetSpy.count, bottomInsetChanges)
+        compare(control.background.x, 0)
+        compare(control.background.y, 10)
+        compare(control.background.width, 100)
+        compare(control.background.height, 90)
+
+        control.leftInset = 20
+        compare(control.topInset, 10)
+        compare(control.leftInset, 20)
+        compare(control.rightInset, 0)
+        compare(control.bottomInset, 0)
+        compare(topInsetSpy.count, topInsetChanges)
+        compare(leftInsetSpy.count, ++leftInsetChanges)
+        compare(rightInsetSpy.count, rightInsetChanges)
+        compare(bottomInsetSpy.count, bottomInsetChanges)
+        compare(control.background.x, 20)
+        compare(control.background.y, 10)
+        compare(control.background.width, 80)
+        compare(control.background.height, 90)
+
+        control.rightInset = 30
+        compare(control.topInset, 10)
+        compare(control.leftInset, 20)
+        compare(control.rightInset, 30)
+        compare(control.bottomInset, 0)
+        compare(topInsetSpy.count, topInsetChanges)
+        compare(leftInsetSpy.count, leftInsetChanges)
+        compare(rightInsetSpy.count, ++rightInsetChanges)
+        compare(bottomInsetSpy.count, bottomInsetChanges)
+        compare(control.background.x, 20)
+        compare(control.background.y, 10)
+        compare(control.background.width, 50)
+        compare(control.background.height, 90)
+
+        control.bottomInset = 40
+        compare(control.topInset, 10)
+        compare(control.leftInset, 20)
+        compare(control.rightInset, 30)
+        compare(control.bottomInset, 40)
+        compare(topInsetSpy.count, topInsetChanges)
+        compare(leftInsetSpy.count, leftInsetChanges)
+        compare(rightInsetSpy.count, rightInsetChanges)
+        compare(bottomInsetSpy.count, ++bottomInsetChanges)
+        compare(control.background.x, 20)
+        compare(control.background.y, 10)
+        compare(control.background.width, 50)
+        compare(control.background.height, 50)
+
+        control.topInset = undefined
+        compare(control.topInset, 0)
+        compare(control.leftInset, 20)
+        compare(control.rightInset, 30)
+        compare(control.bottomInset, 40)
+        compare(topInsetSpy.count, ++topInsetChanges)
+        compare(leftInsetSpy.count, leftInsetChanges)
+        compare(rightInsetSpy.count, rightInsetChanges)
+        compare(bottomInsetSpy.count, bottomInsetChanges)
+        compare(control.background.x, 20)
+        compare(control.background.y, 0)
+        compare(control.background.width, 50)
+        compare(control.background.height, 60)
+
+        control.leftInset = undefined
+        compare(control.topInset, 0)
+        compare(control.leftInset, 0)
+        compare(control.rightInset, 30)
+        compare(control.bottomInset, 40)
+        compare(topInsetSpy.count, topInsetChanges)
+        compare(leftInsetSpy.count, ++leftInsetChanges)
+        compare(rightInsetSpy.count, rightInsetChanges)
+        compare(bottomInsetSpy.count, bottomInsetChanges)
+        compare(control.background.x, 0)
+        compare(control.background.y, 0)
+        compare(control.background.width, 70)
+        compare(control.background.height, 60)
+
+        control.rightInset = undefined
+        compare(control.topInset, 0)
+        compare(control.leftInset, 0)
+        compare(control.rightInset, 0)
+        compare(control.bottomInset, 40)
+        compare(topInsetSpy.count, topInsetChanges)
+        compare(leftInsetSpy.count, leftInsetChanges)
+        compare(rightInsetSpy.count, ++rightInsetChanges)
+        compare(bottomInsetSpy.count, bottomInsetChanges)
+        compare(control.background.x, 0)
+        compare(control.background.y, 0)
+        compare(control.background.width, 100)
+        compare(control.background.height, 60)
+
+        control.bottomInset = undefined
+        compare(control.topInset, 0)
+        compare(control.leftInset, 0)
+        compare(control.rightInset, 0)
+        compare(control.bottomInset, 0)
+        compare(topInsetSpy.count, topInsetChanges)
+        compare(leftInsetSpy.count, leftInsetChanges)
+        compare(rightInsetSpy.count, rightInsetChanges)
+        compare(bottomInsetSpy.count, ++bottomInsetChanges)
+        compare(control.background.x, 0)
+        compare(control.background.y, 0)
+        compare(control.background.width, 100)
+        compare(control.background.height, 100)
     }
 }