qml: enable first wizard page of multisig

electrum/gui/qml/components/Constants.qml

@@ -39,6 +39,9 @@ Item {
     property color colorPiechartFrozen: 'gray'
     property color colorPiechartLightning: 'orange' //Qt.darker(Material.accentColor, 1.20)
 
+    property color colorPiechartParticipant: 'gray'
+    property color colorPiechartSignature: 'yellow'
+
     function colorAlpha(baseColor, alpha) {
         return Qt.rgba(baseColor.r, baseColor.g, baseColor.b, alpha)
     }

electrum/gui/qml/components/wizard/WCMultisig.qml

@@ -0,0 +1,100 @@
+import QtQuick 2.6
+import QtQuick.Layouts 1.0
+import QtQuick.Controls 2.1
+
+import org.electrum 1.0
+
+import "../controls"
+
+WizardComponent {
+    id: root
+
+    valid: true
+
+    property int participants: 2
+    property int signatures: 2
+
+    onParticipantsChanged: {
+        if (participants < signatures)
+            signatures = participants
+        piechart.updateSlices()
+    }
+    onSignaturesChanged: {
+        piechart.updateSlices()
+    }
+
+    function apply() {
+        wizard_data['multisig_participants'] = participants
+        wizard_data['multisig_signatures'] = signatures
+    }
+
+    ColumnLayout {
+        width: parent.width
+
+        Label { text: qsTr('Multisig wallet') }
+
+        InfoTextArea {
+            Layout.preferredWidth: parent.width
+            text: qsTr('Choose the number of participants, and the number of signatures needed to unlock funds in your wallet.')
+        }
+
+        Piechart {
+            id: piechart
+            Layout.preferredWidth: parent.width * 1/2
+            Layout.alignment: Qt.AlignHCenter
+            Layout.preferredHeight: 200 // TODO
+            showLegend: false
+            innerOffset: 3
+            function updateSlices() {
+                var s = []
+                for (let i=0; i < participants; i++) {
+                    var item = {
+                        v: (1/participants),
+                        color: i < signatures ? constants.colorPiechartSignature : constants.colorPiechartParticipant
+                    }
+                    s.push(item)
+                }
+                piechart.slices = s
+            }
+        }
+
+        Label {
+            text: qsTr('Number of cosigners: %1').arg(participants)
+        }
+
+        Slider {
+            id: participants_slider
+            Layout.preferredWidth: parent.width * 4/5
+            Layout.alignment: Qt.AlignHCenter
+            snapMode: Slider.SnapAlways
+            stepSize: 1
+            from: 2
+            to: 15
+            onValueChanged: {
+                if (activeFocus)
+                    participants = value
+            }
+        }
+
+        Label {
+            text: qsTr('Number of signatures: %1').arg(signatures)
+        }
+
+        Slider {
+            id: signatures_slider
+            Layout.preferredWidth: parent.width * 4/5
+            Layout.alignment: Qt.AlignHCenter
+            snapMode: Slider.SnapAlways
+            stepSize: 1
+            from: 1
+            to: participants
+            onValueChanged: {
+                if (activeFocus)
+                    signatures = value
+            }
+        }
+    }
+
+    Component.onCompleted: piechart.updateSlices()
+
+}

electrum/gui/qml/components/wizard/WCWalletType.qml

@@ -32,7 +32,6 @@ WizardComponent {
             text: qsTr('Wallet with two-factor authentication')
         }
         RadioButton {
-            enabled: false
             ButtonGroup.group: wallettypegroup
             property string wallettype: 'multisig'
             text: qsTr('Multi-signature wallet')

electrum/gui/qml/qewizard.py

@@ -59,6 +59,7 @@ class QENewWalletWizard(NewWalletWizard, QEAbstractWizard):
             'have_seed': { 'gui': 'WCHaveSeed' },
             'bip39_refine': { 'gui': 'WCBIP39Refine' },
             'have_master_key': { 'gui': 'WCHaveMasterKey' },
+            'multisig': { 'gui': 'WCMultisig' },
             'imported': { 'gui': 'WCImport' },
             'wallet_password': { 'gui': 'WCWalletPassword' }
         })

electrum/wizard.py

@@ -163,6 +163,9 @@ class NewWalletWizard(AbstractWizard):
                 'next': 'wallet_password',
                 'last': self.last_if_single_password
             },
+            'multisig': {
+                'next': 'first_cosigner'
+            },
             'imported': {
                 'next': 'wallet_password',
                 'last': self.last_if_single_password
@@ -189,6 +192,7 @@ class NewWalletWizard(AbstractWizard):
         return {
             'standard': 'keystore_type',
             '2fa': 'trustedcoin_start',
+            'multisig': 'multisig',
             'imported': 'imported'
         }.get(t)