[Fonts] Keep ChatView on the app font and share the report log font

- ChatLog's unset fallback is qApp->font() again: ChatView never set a font
  before the role existed, so an unset role must not switch chat and the game
  log to monospace at the system GeneralFont size.
- Move the monospace fallback the report dialogs used before into
  report_utils::reportLogFont(), which returns the theme's ChatLog role when it
  is set and the old monospace otherwise. tab_report, dlg_my_reports and
  dlg_report_user now share it, so they cannot drift and they honour a themed
  size instead of overriding it.

cockatrice/src/interface/theme_manager.cpp

@@ -660,17 +660,9 @@ QFont ThemeManager::appFont(AppFont::Role role) const
     }
 
     // Role fallbacks preserve the pre-theme defaults when no fonts.toml is
-    // present: chat logs rendered monospace (matching the report dialogs),
-    // card text from a serif basis, everything else from the app font.
-    if (role == AppFont::ChatLog) {
-        QFont monoFont(QStringLiteral("monospace"));
-        monoFont.setStyleHint(QFont::Monospace);
-        const int systemPointSize = QFontDatabase::systemFont(QFontDatabase::GeneralFont).pointSize();
-        if (systemPointSize > 0) {
-            monoFont.setPointSize(systemPointSize);
-        }
-        return monoFont;
-    }
+    // present: card text starts from a serif basis, everything else from the
+    // application font. The report dialogs that used to hardcode monospace ask
+    // for it explicitly (report_utils::reportLogFont).
     if (role == AppFont::CardText) {
         return QFont(QStringLiteral("Serif"));
     }
@@ -680,6 +672,11 @@ QFont ThemeManager::appFont(AppFont::Role role) const
     return qApp->font();
 }
 
+bool ThemeManager::hasAppFont(AppFont::Role role) const
+{
+    return currentFonts.fonts.contains(role);
+}
+
 QFont ThemeManager::defaultAppFont(AppFont::Role /*role*/) const
 {
     // No per-role scaling and no preview: an unset role resolves to the font

cockatrice/src/interface/theme_manager.h

@@ -150,10 +150,11 @@ public:
     // when present, otherwise a palette-accent-derived fallback.
     QColor appColor(AppColor::Role role) const;
     /** @brief Resolves an application font role: the theme's stored [Fonts]
-     *         value when present, otherwise a per-role fallback (monospace for
-     *         ChatLog, serif basis for CardText, the application font for the
-     *         remaining roles). */
+     *         value when present, otherwise a per-role fallback (serif basis
+     *         for CardText, the application font for the remaining roles). */
     QFont appFont(AppFont::Role role) const;
+    /** @brief Whether the active theme defines this role in fonts.toml. */
+    bool hasAppFont(AppFont::Role role) const;
     /** @brief Resolves an application font role against the startup font only,
      *         ignoring any previewed config in currentFonts. Editors that show
      *         "what this role resolves to" must use this, because appFont()

cockatrice/src/interface/widgets/dialogs/dlg_my_reports.cpp

@@ -7,6 +7,7 @@
 #include "libcockatrice/protocol/pb/serverinfo_report.pb.h"
 
 #include <QAbstractItemView>
+#include <QFont>
 #include <QGroupBox>
 #include <QHBoxLayout>
 #include <QHeaderView>
@@ -125,14 +126,7 @@ DlgMyReports::DlgMyReports(AbstractClient *_client, QWidget *parent)
 
 void DlgMyReports::applyChatLogFont()
 {
-    // Family comes from the ChatLog theme role; size stays caller-side as before.
-    QFont monoFont = themeManager->appFont(AppFont::ChatLog);
-    monoFont.setStyleHint(QFont::Monospace);
-    const int systemPointSize = QFontDatabase::systemFont(QFontDatabase::GeneralFont).pointSize();
-    if (systemPointSize > 0) {
-        monoFont.setPointSize(systemPointSize);
-    }
-    chatLogEdit->setFont(monoFont);
+    chatLogEdit->setFont(report_utils::reportLogFont());
 }
 
 void DlgMyReports::refreshList()

cockatrice/src/interface/widgets/dialogs/dlg_report_user.cpp

@@ -1,11 +1,13 @@
 #include "dlg_report_user.h"
 
 #include "../interface/theme_manager.h"
+#include "../utility/report_utils.h"
 #include "abstract_client.h"
 #include "libcockatrice/protocol/pb/response.pb.h"
 
 #include <QComboBox>
 #include <QDialogButtonBox>
+#include <QFont>
 #include <QGridLayout>
 #include <QGroupBox>
 #include <QLabel>
@@ -124,14 +126,7 @@ DlgReportUser::DlgReportUser(AbstractClient *_client,
 
 void DlgReportUser::applyChatLogFont()
 {
-    // Family comes from the ChatLog theme role; size stays caller-side as before.
-    QFont monoFont = themeManager->appFont(AppFont::ChatLog);
-    monoFont.setStyleHint(QFont::Monospace);
-    const int systemPointSize = QFontDatabase::systemFont(QFontDatabase::GeneralFont).pointSize();
-    if (systemPointSize > 0) {
-        monoFont.setPointSize(systemPointSize);
-    }
-    chatLogEdit->setFont(monoFont);
+    chatLogEdit->setFont(report_utils::reportLogFont());
 }
 
 void DlgReportUser::actSubmit()

cockatrice/src/interface/widgets/tabs/tab_report.cpp

@@ -13,6 +13,7 @@
 #include <QComboBox>
 #include <QDateTime>
 #include <QDebug>
+#include <QFont>
 #include <QGridLayout>
 #include <QGroupBox>
 #include <QHBoxLayout>
@@ -273,14 +274,7 @@ TabReport::TabReport(TabSupervisor *_tabSupervisor, AbstractClient *_client) : T
 
 void TabReport::applyChatLogFont()
 {
-    // Family comes from the ChatLog theme role; size stays caller-side as before.
-    QFont monoFont = themeManager->appFont(AppFont::ChatLog);
-    monoFont.setStyleHint(QFont::Monospace);
-    const int systemPointSize = QFontDatabase::systemFont(QFontDatabase::GeneralFont).pointSize();
-    if (systemPointSize > 0) {
-        monoFont.setPointSize(systemPointSize);
-    }
-    chatLogEdit->setFont(monoFont);
+    chatLogEdit->setFont(report_utils::reportLogFont());
 }
 
 void TabReport::retranslateUi()

cockatrice/src/interface/widgets/utility/report_utils.cpp

@@ -1,5 +1,6 @@
 #include "report_utils.h"
 
+#include "../../theme_manager.h"
 #include "libcockatrice/protocol/pb/serverinfo_report.pb.h"
 
 #include <QApplication>
@@ -7,6 +8,7 @@
 #include <QChar>
 #include <QColor>
 #include <QDateTime>
+#include <QFontDatabase>
 #include <QPalette>
 #include <QSharedPointer>
 #include <QTableWidget>
@@ -19,6 +21,20 @@
 namespace report_utils
 {
 
+QFont reportLogFont()
+{
+    if (themeManager->hasAppFont(AppFont::ChatLog)) {
+        return themeManager->appFont(AppFont::ChatLog);
+    }
+    QFont monoFont(QStringLiteral("monospace"));
+    monoFont.setStyleHint(QFont::Monospace);
+    const int systemPointSize = QFontDatabase::systemFont(QFontDatabase::GeneralFont).pointSize();
+    if (systemPointSize > 0) {
+        monoFont.setPointSize(systemPointSize);
+    }
+    return monoFont;
+}
+
 namespace
 {
 QColor reportStatusColor(const QString &status)

cockatrice/src/interface/widgets/utility/report_utils.h

@@ -1,6 +1,7 @@
 #ifndef REPORT_UTILS_H
 #define REPORT_UTILS_H
 
+#include <QFont>
 #include <QString>
 #include <QtGlobal>
 
@@ -11,6 +12,12 @@ class ServerInfo_Report;
 namespace report_utils
 {
 
+/** @brief Font for the report chat-log views: the theme's ChatLog role when it
+ *         sets one, otherwise the monospace font these views used before the
+ *         role existed. Shared by the three report surfaces so they cannot
+ *         drift apart. */
+QFont reportLogFont();
+
 QString formatReportCategory(const QString &category);
 QString formatReportTime(qint64 secondsSinceEpoch);