qt: recognize system monospace font as non-selectable font

kwvg · kwvg · commit 800cf668499f · 2026-01-02T04:06:29.000+05:30
diff --git a/src/qt/guiutil.cpp b/src/qt/guiutil.cpp
@@ -230,14 +230,6 @@ QString dateTimeStr(qint64 nTime)
     return dateTimeStr(QDateTime::fromSecsSinceEpoch((qint32)nTime));
 }
 
-QFont fixedPitchFont(bool use_embedded_font)
-{
-    if (use_embedded_font) {
-        return {"Roboto Mono"};
-    }
-    return QFontDatabase::systemFont(QFontDatabase::FixedFont);
-}
-
 // Just some dummy data to generate a convincing random-looking (but consistent) address
 static const uint8_t dummydata[] = {0xeb,0x15,0x23,0x1d,0xfc,0xeb,0x60,0x92,0x58,0x86,0xb6,0x7d,0x06,0x52,0x99,0x92,0x59,0x15,0xae,0xb1,0x72,0xc0,0x66,0x47};
 
diff --git a/src/qt/guiutil.h b/src/qt/guiutil.h
@@ -125,9 +125,6 @@ namespace GUIUtil
     QString dateTimeStr(const QDateTime &datetime);
     QString dateTimeStr(qint64 nTime);
 
-    // Return a monospace font
-    QFont fixedPitchFont(bool use_embedded_font = false);
-
     // Set up widget for address
     void setupAddressWidget(QValidatedLineEdit *widget, QWidget *parent, bool fAllowURI = false);
 
diff --git a/src/qt/guiutil_font.cpp b/src/qt/guiutil_font.cpp
@@ -120,6 +120,7 @@ namespace GUIUtil {
 std::vector<std::pair<QString, /*selectable=*/bool>> g_fonts_known{
     {MONTSERRAT_FONT_STR.toUtf8(), true},
     {OS_FONT_STR.toUtf8(), true},
+    {OS_MONO_FONT_STR.toUtf8(), false},
     {ROBOTO_MONO_FONT_STR.toUtf8(), false},
 };
 
@@ -474,11 +475,13 @@ QFont getFont(const QString& font_name, const FontAttrib& font_attrib)
 #endif // Q_OS_MACOS
     } else if (font_name == OS_FONT_STR) {
         font.setFamily(g_default_font->family());
+    } else if (font_name == OS_MONO_FONT_STR) {
+        font.setFamily(QFontDatabase::systemFont(QFontDatabase::FixedFont).family());
     } else {
         font.setFamily(font_name);
     }
 
-    if (font_name == ROBOTO_MONO_FONT_STR) {
+    if (font_name == ROBOTO_MONO_FONT_STR || font_name == OS_MONO_FONT_STR) {
         font.setStyleHint(QFont::Monospace);
     }
 
@@ -544,4 +547,12 @@ int FontRegistry::WeightToIdx(const QFont::Weight& weight) const
     }
     return -1;
 }
+
+QFont fixedPitchFont(bool use_embedded_font)
+{
+    return getFont({
+        use_embedded_font ? ROBOTO_MONO_FONT_STR.toUtf8() : OS_MONO_FONT_STR.toUtf8(),
+        g_font_registry.GetWeightNormal()
+    });
+}
 } // namespace GUIUtil
diff --git a/src/qt/guiutil_font.h b/src/qt/guiutil_font.h
@@ -19,6 +19,7 @@ namespace GUIUtil {
 // TODO: Switch to QUtf8StringView when we switch to Qt 6
 constexpr QStringView MONTSERRAT_FONT_STR{u"Montserrat"};
 constexpr QStringView OS_FONT_STR{u"SystemDefault"};
+constexpr QStringView OS_MONO_FONT_STR{u"SystemMonospace"};
 constexpr QStringView ROBOTO_MONO_FONT_STR{u"Roboto Mono"};
 
 enum class FontWeight : uint8_t {
@@ -160,6 +161,9 @@ QFont getFontNormal();
 
 /** Get the default bold QFont */
 QFont getFontBold();
+
+/** (Bitcoin) Return a monospace font */
+QFont fixedPitchFont(bool use_embedded_font = false);
 } // namespace GUIUtil
 
 #endif // BITCOIN_QT_GUIUTIL_FONT_H
