Merge #11991: [qt] Receive: checkbox for bech32 address

63ac8907c [qt] receive tab: bech32 address opt-in checkbox (Sjors Provoost)

Pull request description:

  <img width="647" alt="schermafbeelding 2018-01-12 om 18 34 48" src="https://user-images.githubusercontent.com/10217/34887691-a6a796fe-f7c7-11e7-8b89-87ce07c61ce3.png">

  Checkbox does what you would expect. Press tab from the amount field to get there.

  It's unchecked by default.

  When launched with `-addresstype=bech32` it's checked by default. When launched with `-addresstype=legacy` it unchecked and disabled.

  The change in `receivecoinsdialog.ui` is smaller than it looks, due to the way git handles XML diffs. I had to add a horizontal spacer to make it look decent, see https://github.com/bitcoin/bitcoin/issues/11950#issuecomment-352870909. This causes column numbers to change in the rest of the grid.

  I recommend testing on at least one other OS than OSX to be on the safe side.

Tree-SHA512: ec4b733b796d9a94278a5d8040a69d9574ef50021e68f94f61f2da75d1bb57f39272cbc9f1f7d34f733a19640daf666a23844fcd132f83bfdaf327d9d1d6f105

src/qt/addresstablemodel.cpp

@@ -341,7 +341,7 @@ void AddressTableModel::updateEntry(const QString &address,
     priv->updateEntry(address, label, isMine, purpose, status);
 }
 
-QString AddressTableModel::addRow(const QString &type, const QString &label, const QString &address)
+QString AddressTableModel::addRow(const QString &type, const QString &label, const QString &address, const OutputType address_type)
 {
     std::string strLabel = label.toStdString();
     std::string strAddress = address.toStdString();
@@ -384,8 +384,8 @@ QString AddressTableModel::addRow(const QString &type, const QString &label, con
                 return QString();
             }
         }
-        wallet->LearnRelatedScripts(newKey, g_address_type);
+        wallet->LearnRelatedScripts(newKey, address_type);
-        strAddress = EncodeDestination(GetDestinationForKey(newKey, g_address_type));
+        strAddress = EncodeDestination(GetDestinationForKey(newKey, address_type));
     }
     else
     {

src/qt/addresstablemodel.h

@@ -8,6 +8,8 @@
 #include <QAbstractTableModel>
 #include <QStringList>
 
+enum OutputType : int;
+
 class AddressTablePriv;
 class WalletModel;
 
@@ -61,7 +63,7 @@ public:
     /* Add an address to the model.
        Returns the added address on success, and an empty string otherwise.
      */
-    QString addRow(const QString &type, const QString &label, const QString &address);
+    QString addRow(const QString &type, const QString &label, const QString &address, const OutputType address_type);
 
     /* Look up label for address in address book, if not found return empty string.
      */

src/qt/editaddressdialog.cpp

@@ -11,6 +11,8 @@
 #include <QDataWidgetMapper>
 #include <QMessageBox>
 
+extern OutputType g_address_type;
+
 EditAddressDialog::EditAddressDialog(Mode _mode, QWidget *parent) :
     QDialog(parent),
     ui(new Ui::EditAddressDialog),
@@ -77,7 +79,8 @@ bool EditAddressDialog::saveCurrentRow()
         address = model->addRow(
                 mode == NewSendingAddress ? AddressTableModel::Send : AddressTableModel::Receive,
                 ui->labelEdit->text(),
-                ui->addressEdit->text());
+                ui->addressEdit->text(),
+                g_address_type);
         break;
     case EditReceivingAddress:
     case EditSendingAddress:

src/qt/forms/receivecoinsdialog.ui

@@ -7,7 +7,7 @@
     <x>0</x>
     <y>0</y>
     <width>776</width>
-    <height>364</height>
+    <height>396</height>
    </rect>
   </property>
   <layout class="QVBoxLayout" name="verticalLayout" stretch="0,0,1">
@@ -28,6 +28,22 @@
      <layout class="QVBoxLayout" name="verticalLayout_3">
       <item>
        <layout class="QGridLayout" name="gridLayout">
+        <item row="5" column="0">
+         <widget class="QLabel" name="label">
+          <property name="toolTip">
+           <string>An optional amount to request. Leave this empty or zero to not request a specific amount.</string>
+          </property>
+          <property name="text">
+           <string>&amp;Amount:</string>
+          </property>
+          <property name="alignment">
+           <set>Qt::AlignRight|Qt::AlignTrailing|Qt::AlignVCenter</set>
+          </property>
+          <property name="buddy">
+           <cstring>reqAmount</cstring>
+          </property>
+         </widget>
+        </item>
         <item row="6" column="0">
          <widget class="QLabel" name="label_3">
           <property name="toolTip">
@@ -51,13 +67,6 @@
           </property>
          </widget>
         </item>
-        <item row="6" column="2">
-         <widget class="QLineEdit" name="reqMessage">
-          <property name="toolTip">
-           <string>An optional message to attach to the payment request, which will be displayed when the request is opened. Note: The message will not be sent with the payment over the Bitcoin network.</string>
-          </property>
-         </widget>
-        </item>
         <item row="2" column="2">
          <widget class="QLabel" name="label_5">
           <property name="text">
@@ -81,32 +90,10 @@
           </property>
          </widget>
         </item>
-        <item row="5" column="0">
+        <item row="6" column="2">
-         <widget class="QLabel" name="label">
+         <widget class="QLineEdit" name="reqMessage">
-          <property name="toolTip">
-           <string>An optional amount to request. Leave this empty or zero to not request a specific amount.</string>
-          </property>
-          <property name="text">
-           <string>&amp;Amount:</string>
-          </property>
-          <property name="alignment">
-           <set>Qt::AlignRight|Qt::AlignTrailing|Qt::AlignVCenter</set>
-          </property>
-          <property name="buddy">
-           <cstring>reqAmount</cstring>
-          </property>
-         </widget>
-        </item>
-        <item row="5" column="2">
-         <widget class="BitcoinAmountField" name="reqAmount">
-          <property name="minimumSize">
-           <size>
-            <width>80</width>
-            <height>0</height>
-           </size>
-          </property>
           <property name="toolTip">
-           <string>An optional amount to request. Leave this empty or zero to not request a specific amount.</string>
+           <string>An optional message to attach to the payment request, which will be displayed when the request is opened. Note: The message will not be sent with the payment over the Bitcoin network.</string>
           </property>
          </widget>
         </item>
@@ -174,6 +161,73 @@
           </property>
          </widget>
         </item>
+        <item row="5" column="2">
+         <layout class="QHBoxLayout" name="horizontalLayout_6">
+          <item>
+           <widget class="BitcoinAmountField" name="reqAmount">
+            <property name="sizePolicy">
+             <sizepolicy hsizetype="Fixed" vsizetype="Fixed">
+              <horstretch>0</horstretch>
+              <verstretch>0</verstretch>
+             </sizepolicy>
+            </property>
+            <property name="minimumSize">
+             <size>
+              <width>80</width>
+              <height>0</height>
+             </size>
+            </property>
+            <property name="maximumSize">
+             <size>
+              <width>1000</width>
+              <height>100</height>
+             </size>
+            </property>
+            <property name="toolTip">
+             <string>An optional amount to request. Leave this empty or zero to not request a specific amount.</string>
+            </property>
+           </widget>
+          </item>
+          <item>
+           <widget class="QCheckBox" name="useBech32">
+            <property name="sizePolicy">
+             <sizepolicy hsizetype="Fixed" vsizetype="Fixed">
+              <horstretch>0</horstretch>
+              <verstretch>0</verstretch>
+             </sizepolicy>
+            </property>
+            <property name="maximumSize">
+             <size>
+              <width>1000</width>
+              <height>16777215</height>
+             </size>
+            </property>
+            <property name="focusPolicy">
+             <enum>Qt::StrongFocus</enum>
+            </property>
+            <property name="toolTip">
+             <string>Bech32 addresses (BIP-173) are cheaper to spend from and offer better protection against typos. When unchecked a P2SH wrapped SegWit address will be created, compatible with older wallets.</string>
+            </property>
+            <property name="text">
+             <string>Generate Bech32 address</string>
+            </property>
+           </widget>
+          </item>
+          <item>
+           <spacer name="horizontalSpacer_3">
+            <property name="orientation">
+             <enum>Qt::Horizontal</enum>
+            </property>
+            <property name="sizeHint" stdset="0">
+             <size>
+              <width>0</width>
+              <height>0</height>
+             </size>
+            </property>
+           </spacer>
+          </item>
+         </layout>
+        </item>
        </layout>
       </item>
      </layout>
@@ -306,6 +360,7 @@
  <tabstops>
   <tabstop>reqLabel</tabstop>
   <tabstop>reqAmount</tabstop>
+  <tabstop>useBech32</tabstop>
   <tabstop>reqMessage</tabstop>
   <tabstop>receiveButton</tabstop>
   <tabstop>clearButton</tabstop>

src/qt/receivecoinsdialog.cpp

@@ -2,6 +2,8 @@
 // Distributed under the MIT software license, see the accompanying
 // file COPYING or http://www.opensource.org/licenses/mit-license.php.
 
+#include <wallet/wallet.h>
+
 #include <qt/receivecoinsdialog.h>
 #include <qt/forms/ui_receivecoinsdialog.h>
 
@@ -41,6 +43,15 @@ ReceiveCoinsDialog::ReceiveCoinsDialog(const PlatformStyle *_platformStyle, QWid
         ui->removeRequestButton->setIcon(_platformStyle->SingleColorIcon(":/icons/remove"));
     }
 
+    // configure bech32 checkbox, disable if launched with legacy as default:
+    if (model->getDefaultAddressType() == OUTPUT_TYPE_BECH32) {
+        ui->useBech32->setCheckState(Qt::Checked);
+    } else {
+        ui->useBech32->setCheckState(Qt::Unchecked);
+    }
+
+    ui->useBech32->setVisible(model->getDefaultAddressType() != OUTPUT_TYPE_LEGACY);
+
     // context menu actions
     QAction *copyURIAction = new QAction(tr("Copy URI"), this);
     QAction *copyLabelAction = new QAction(tr("Copy label"), this);
@@ -133,7 +144,11 @@ void ReceiveCoinsDialog::on_receiveButton_clicked()
     QString address;
     QString label = ui->reqLabel->text();
     /* Generate new receiving address */
-    address = model->getAddressTableModel()->addRow(AddressTableModel::Receive, label, "");
+    OutputType address_type = model->getDefaultAddressType();
+    if (address_type != OUTPUT_TYPE_LEGACY) {
+        address_type = ui->useBech32->isChecked() ? OUTPUT_TYPE_BECH32 : OUTPUT_TYPE_P2SH_SEGWIT;
+    }
+    address = model->getAddressTableModel()->addRow(AddressTableModel::Receive, label, "", address_type);
     SendCoinsRecipient info(address, label,
         ui->reqAmount->value(), ui->reqMessage->text());
     ReceiveRequestDialog *dialog = new ReceiveRequestDialog(this);

src/qt/walletmodel.cpp

@@ -733,6 +733,11 @@ bool WalletModel::hdEnabled() const
     return wallet->IsHDEnabled();
 }
 
+OutputType WalletModel::getDefaultAddressType() const
+{
+    return g_address_type;
+}
+
 int WalletModel::getDefaultConfirmTarget() const
 {
     return nTxConfirmTarget;

src/qt/walletmodel.h

@@ -15,6 +15,8 @@
 
 #include <QObject>
 
+enum OutputType : int;
+
 class AddressTableModel;
 class OptionsModel;
 class PlatformStyle;
@@ -214,6 +216,8 @@ public:
 
     bool hdEnabled() const;
 
+    OutputType getDefaultAddressType() const;
+
     int getDefaultConfirmTarget() const;
 
 private:

src/wallet/wallet.h

@@ -99,7 +99,7 @@ enum WalletFeature
     FEATURE_LATEST = FEATURE_COMPRPUBKEY // HD is optional, use FEATURE_COMPRPUBKEY as latest version
 };
 
-enum OutputType
+enum OutputType : int
 {
     OUTPUT_TYPE_NONE,
     OUTPUT_TYPE_LEGACY,