Merge bitcoin-core/gui#39: Add visual accenting for the 'Create new receiving address' button

4ec49f8 qt: Leverage the default "Create new receiving address" button (Hennadii Stepanov)
4227a8e qt: Make "Create new receiving address" default unconditionally (Hennadii Stepanov)

Pull request description:

  Fix #24

  The first commit:
  - visual improvement with no behavior change

  The second commit:
  - removes a bunch of LOCs
  - slightly change behavior and makes it standard

  With this PR:
  ![DeepinScreenshot_select-area_20200721213040](https://user-images.githubusercontent.com/32963518/88093294-7b2a6700-cb9a-11ea-89a2-a0e2678056a7.png)

ACKs for top commit:
  Saibato:
    Concept tACK  bitcoin-core/gui@4227a8e bitcoin-core/gui@4ec49f8
  promag:
    Tested ACK 4ec49f8 on macos.

Tree-SHA512: 3403d5ee96ec139491c7e23b24a24d9239fe55c58d99cbd4cd13bc877f76f992ed011c09e2af35b2a63be1a2371b95f6ac719325396dcc8333cf3eb7fa2e3d2c

Author: MarcoFalke

src/qt/forms/receivecoinsdialog.ui

@@ -110,6 +110,12 @@
             <property name="text">
              <string>&amp;Request payment</string>
             </property>
+            <property name="autoDefault">
+             <bool>false</bool>
+            </property>
+            <property name="default">
+             <bool>true</bool>
+            </property>
            </widget>
           </item>
           <item>

src/qt/receivecoinsdialog.cpp

@@ -194,22 +194,6 @@ void ReceiveCoinsDialog::resizeEvent(QResizeEvent *event)
     columnResizingFixer->stretchColumnWidth(RecentRequestsTableModel::Message);
 }
 
-void ReceiveCoinsDialog::keyPressEvent(QKeyEvent *event)
-{
-    if (event->key() == Qt::Key_Return)
-    {
-        // press return -> submit form
-        if (ui->reqLabel->hasFocus() || ui->reqAmount->hasFocus() || ui->reqMessage->hasFocus())
-        {
-            event->ignore();
-            on_receiveButton_clicked();
-            return;
-        }
-    }
-
-    this->QDialog::keyPressEvent(event);
-}
-
 QModelIndex ReceiveCoinsDialog::selectedRow()
 {
     if(!model || !model->getRecentRequestsTableModel() || !ui->recentRequestsView->selectionModel())

src/qt/receivecoinsdialog.h

@@ -48,9 +48,6 @@ public Q_SLOTS:
     void reject() override;
     void accept() override;
 
-protected:
-    virtual void keyPressEvent(QKeyEvent *event) override;
-
 private:
     Ui::ReceiveCoinsDialog *ui;
     GUIUtil::TableViewLastColumnResizingFixer *columnResizingFixer;