qml: increase font on seed keyboard, and height of seedkeyboard slightly

electrum/gui/qml/components/controls/SeedKeyboard.qml

@@ -13,7 +13,7 @@ Item {
 
     property int keywidth: (root.width - 2 * hpadding) / 10 - keyhspacing
     property int keyheight: (root.height - 2 * vpadding) / 4 - keyvspacing
-    property int keyhspacing: 4
+    property int keyhspacing: 2
     property int keyvspacing: 5
 
     function emitKeyEvent(key, keycode) {

electrum/gui/qml/components/controls/SeedKeyboardKey.qml

@@ -26,10 +26,7 @@ Pane {
         autoRepeat: true
         autoRepeatDelay: 750
 
-        text: key
-
         padding: 0
-        font.pixelSize: Math.max(root.height * 1/3, constants.fontSizeSmall)
 
         onClicked: {
             emitKeyEvent()
@@ -39,5 +36,12 @@ Pane {
         onDoubleClicked: {
             emitKeyEvent()
         }
+
+        Label {
+            anchors.centerIn: parent
+            text: key
+            font.pixelSize: Math.max(root.height * 0.67, constants.fontSizeSmall)
+            verticalAlignment: Text.AlignVCenter
+        }
     }
 }

electrum/gui/qml/components/controls/SeedTextArea.qml

@@ -125,7 +125,7 @@ Pane {
         SeedKeyboard {
             id: kbd
             Layout.fillWidth: true
-            Layout.preferredHeight: kbd.width / 2
+            Layout.preferredHeight: kbd.width / 1.75
             visible: !root.readOnly
             onKeyEvent: {
                 if (keycode == Qt.Key_Backspace) {