partial bitcoin-core/gui#79: Embed monospaced font

includes:
- 89e421918ee8b9c8439317f747e5c37f0733d94b
- 623de12d040af89ff7c25de6eb0a19c67179dc5f

contrib/debian/copyright

@@ -31,6 +31,10 @@ Files: src/qt/res/icons/proxy.png
 Copyright: Cristian Mircea Messel
 License: public-domain
 
+Files: src/qt/fonts/RobotoMono-Bold.ttf
+License: Apache-2.0
+Comment: Site: https://fonts.google.com/specimen/Roboto+Mono
+
 
 License: Expat
  Permission is hereby granted, free of charge, to any person obtaining a
@@ -88,3 +92,14 @@ Comment:
 
 License: public-domain
  This work is in the public domain.
+
+License: Apache-2.0
+ Licensed under the Apache License, Version 2.0 (the "License");
+ you may not use this file except in compliance with the License.
+ You may obtain a copy of the License at
+ http://www.apache.org/licenses/LICENSE-2.0
+ Unless required by applicable law or agreed to in writing, software
+ distributed under the License is distributed on an "AS IS" BASIS,
+ WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ See the License for the specific language governing permissions and
+ limitations under the License.

src/Makefile.qt.include

@@ -352,7 +352,8 @@ RES_FONTS = \
   qt/res/fonts/Montserrat/Montserrat-SemiBold.otf \
   qt/res/fonts/Montserrat/Montserrat-SemiBoldItalic.otf \
   qt/res/fonts/Montserrat/Montserrat-Thin.otf \
-  qt/res/fonts/Montserrat/Montserrat-ThinItalic.otf
+  qt/res/fonts/Montserrat/Montserrat-ThinItalic.otf \
+  qt/res/fonts/RobotoMono-Bold.ttf
 
 RES_ANIMATION = $(wildcard $(srcdir)/qt/res/animation/spinner-*.png)
 

src/qt/bitcoin.cpp

@@ -47,6 +47,7 @@
 
 #include <QApplication>
 #include <QDebug>
+#include <QFontDatabase>
 #include <QLatin1String>
 #include <QLibraryInfo>
 #include <QLocale>
@@ -576,6 +577,7 @@ int GuiMain(int argc, char* argv[])
     QCoreApplication::setAttribute(Qt::AA_EnableHighDpiScaling);
 
     BitcoinApplication app;
+    QFontDatabase::addApplicationFont(":/fonts/monospace");
 
     /// 2. Parse command-line options. We do this after qt in order to show an error if there are problems parsing these
     // Command-line options take precedence:

src/qt/dash.qrc

@@ -36,6 +36,7 @@
         <file alias="Traditional">res/css/traditional.css</file>
     </qresource>
     <qresource prefix="/fonts">
+        <file alias="monospace">res/fonts/RobotoMono-Bold.ttf</file>
         <file alias="Montserrat-Black">res/fonts/Montserrat/Montserrat-Black.otf</file>
         <file alias="Montserrat-BlackItalic">res/fonts/Montserrat/Montserrat-BlackItalic.otf</file>
         <file alias="Montserrat-Bold">res/fonts/Montserrat/Montserrat-Bold.otf</file>

src/qt/guiutil.cpp

@@ -260,8 +260,11 @@ QString dateTimeStr(qint64 nTime)
     return dateTimeStr(QDateTime::fromTime_t((qint32)nTime));
 }
 
-QFont fixedPitchFont()
+QFont fixedPitchFont(bool use_embedded_font)
 {
+    if (use_embedded_font) {
+        return {"Roboto Mono"};
+    }
     return QFontDatabase::systemFont(QFontDatabase::FixedFont);
 }
 

src/qt/guiutil.h

@@ -127,7 +127,7 @@ namespace GUIUtil
     QString dateTimeStr(qint64 nTime);
 
     // Return a monospace font
-    QFont fixedPitchFont();
+    QFont fixedPitchFont(bool use_embedded_font = false);
 
     // Set up widget for address
     void setupAddressWidget(QValidatedLineEdit *widget, QWidget *parent, bool fAllowURI = false);