qml SwapDialog: move userinfo to the top, make it constant, add padding and labels below the slider

electrum/gui/qml/components/SwapDialog.qml

@@ -23,14 +23,23 @@ ElDialog {
     ColumnLayout {
         width: parent.width
         height: parent.height
-        spacing: 0
+        spacing: constants.paddingLarge
+
+        InfoTextArea {
+            Layout.leftMargin: constants.paddingXXLarge
+            Layout.rightMargin: constants.paddingXXLarge
+            Layout.fillWidth: true
+            Layout.alignment: Qt.AlignHCenter
+            visible: swaphelper.userinfo != ''
+            text: swaphelper.userinfo
+        }
 
         GridLayout {
             id: layout
             columns: 2
             Layout.preferredWidth: parent.width
-            Layout.leftMargin: constants.paddingLarge
-            Layout.rightMargin: constants.paddingLarge
+            Layout.leftMargin: constants.paddingXXLarge
+            Layout.rightMargin: constants.paddingXXLarge
 
             RowLayout {
                 Layout.preferredWidth: 1
@@ -207,13 +216,22 @@ ElDialog {
             }
         }
 
-        InfoTextArea {
+        RowLayout {
+            Layout.fillWidth: true
             Layout.leftMargin: constants.paddingXXLarge
             Layout.rightMargin: constants.paddingXXLarge
-            Layout.fillWidth: true
-            Layout.alignment: Qt.AlignHCenter
-            visible: swaphelper.userinfo != ''
-            text: swaphelper.userinfo
+            Label {
+                text: '<-- ' + qsTr('Add receiving capacity')
+                font.pixelSize: constants.fontSizeXSmall
+                color: Material.accentColor
+            }
+            Label {
+                Layout.fillWidth: true
+                horizontalAlignment: Text.AlignRight
+                text: qsTr('Add sending capacity') + ' -->'
+                font.pixelSize: constants.fontSizeXSmall
+                color: Material.accentColor
+            }
         }
 
         Item { Layout.fillHeight: true; Layout.preferredWidth: 1 }

electrum/gui/qml/qeswaphelper.py

@@ -33,7 +33,10 @@ class QESwapHelper(AuthMixin, QObject):
         self._rangeMax = 0
         self._tx = None
         self._valid = False
-        self._userinfo = ''
+        self._userinfo = ' '.join([
+            _('Move the slider to set the amount and direction of the swap.'),
+            _('Swapping lightning funds for onchain funds will increase your capacity to receive lightning payments.'),
+        ])
         self._tosend = QEAmount()
         self._toreceive = QEAmount()
         self._serverfeeperc = ''
@@ -277,7 +280,6 @@ class QESwapHelper(AuthMixin, QObject):
         # pay_amount and receive_amounts are always with fees already included
         # so they reflect the net balance change after the swap
         if position < 0:  # reverse swap
-            self.userinfo = _('Adds Lightning receiving capacity.')
             self.isReverse = True
 
             self._send_amount = abs(position)
@@ -295,7 +297,6 @@ class QESwapHelper(AuthMixin, QObject):
 
             self.check_valid(self._send_amount, self._receive_amount)
         else:  # forward (normal) swap
-            self.userinfo = _('Adds Lightning sending capacity.')
             self.isReverse = False
             self._send_amount = position
             self.tosend = QEAmount(amount_sat=self._send_amount)
@@ -318,7 +319,6 @@ class QESwapHelper(AuthMixin, QObject):
             self.valid = True
         else:
             # add more nuanced error reporting?
-            self.userinfo = _('Swap below minimal swap size, change the slider.')
             self.valid = False
 
     def fwd_swap_updatetx(self):