callstackview: send DTMF via physical keyboard

Change-Id: I185945c8202edc31fab9bc9c440281c7325896bf
GitLab: #19

src/mainview/components/CallStackView.qml

@@ -31,6 +31,12 @@ Rectangle {
     id: callStackViewWindow
 
     property bool isAudioOnly: false
+    property var sipKeys: [
+        "1", "2", "3", "A",
+        "4", "5", "6", "B",
+        "7", "8", "9", "C",
+        "*", "0", "#", "D"
+    ]
 
     enum StackNumber {
         InitialPageStack,
@@ -46,6 +52,18 @@ Rectangle {
         onActivatedAmbiguously: CallAdapter.hangUpThisCall()
     }
 
+    Keys.onPressed: {
+        if (LRCInstance.currentAccountType !== Profile.Type.SIP)
+            return
+        print(event.text)
+        var key = event.text.toUpperCase()
+        if(sipKeys.find(function (item) {
+            return item === key
+        })) {
+            CallAdapter.sipInputPanelPlayDTMF(key)
+        }
+    }
+
     // When selected conversation is changed,
     // these values will also be changed.
     property string responsibleConvUid: ""