Add QQuickDialog::title

Dialog is incomplete without built-in support for title. All dialogs in
the examples, screenshots, webinars, and blog posts have had a custom
title. The Material and Universal designs both have specs for dialog
titles. This commit adds support for dialog titles with appropriate
looks (padding & font) out of the box.

Task-number: QTBUG-56711
Change-Id: I248150313f1ce629a7105fdbe1c70c8fcd69e1cc
Reviewed-by: Mitch Curtis <mitch.curtis@qt.io>

1 files changed, 13 insertions, 0 deletions

diff --git a/src/imports/controls/Dialog.qml b/src/imports/controls/Dialog.qml
index 3322a6ea..a26928c1 100644
--- a/src/imports/controls/Dialog.qml
+++ b/src/imports/controls/Dialog.qml
@@ -59,6 +59,19 @@ T.Dialog {
         border.color: Default.frameDarkColor
     }
 
+    header: Label {
+        text: control.title
+        visible: control.title
+        elide: Label.ElideRight
+        font.bold: true
+        padding: 12
+        background: Rectangle {
+            x: 1; y: 1
+            width: parent.width - 2
+            height: parent.height - 1
+        }
+    }
+
     footer: DialogButtonBox {
         visible: count > 0
     }