feat: add build option for freestanding text in about page (#6766)

Example usage:
```
cmake -DCHATTERINO_EXTRA_BUILD_STRING="hi im <a href=\"https://forsen.tv\">forsen</a>" ..
```

.github/ISSUE_TEMPLATE/a_make_a_report.yml

@@ -42,7 +42,7 @@ body:
       description: While optional, it's highly encouraged to include screenshots or videos to illustrate what you mean.
       placeholder: You can upload them using the text editor's dedicated button.
 
-  - type: input
+  - type: textarea
     id: versions
     validations:
       required: true

CHANGELOG.md

@@ -86,6 +86,7 @@
 - Dev: Added Clazy linting in CI. (#6623)
 - Dev: Added custom clang-tidy module linting in CI. (#6626)
 - Dev: CMake option `USE_ALTERNATE_LINKER` now errors if the given linker can't be found. (#6692)
+- Dev: Added a CMake option `CHATTERINO_EXTRA_BUILD_STRING` which allows the packager to provide an optional freestanding Qt-HTML string that shows up in the About page under the Chatterino version. (#6766)
 - Dev: Enable C++ 23. (#6693)
 - Dev: Prefer `std::expected` over `nonstd::expected_lite`. (#6693)
 - Dev: Moved Twitch PubSub to liveupdates. (#6638)

CMakeLists.txt

@@ -40,6 +40,8 @@ add_feature_info("Chatterino code sanitizer support" CHATTERINO_SANITIZER_SUPPOR
 option(CHATTERINO_UPDATER "Enable update checks" ON)
 mark_as_advanced(CHATTERINO_UPDATER)
 
+set(CHATTERINO_EXTRA_BUILD_STRING "" CACHE STRING "Provide an extra string to show in the about page under the Chatterino version. This string allows the use of Qt's HTML subset.")
+
 set(USE_ALTERNATE_LINKER "" CACHE STRING "Use alternate linker. Leave empty for system default. CMake 3.29 users can use CMAKE_LINKER_TYPE instead.")
 
 if(CHATTERINO_SANITIZER_SUPPORT)

src/CMakeLists.txt

@@ -1111,6 +1111,7 @@ set_target_properties(${LIBRARY_PROJECT}
 set(VERSION_SOURCE_FILES common/Version.cpp common/Version.hpp)
 add_library(${VERSION_PROJECT} STATIC ${VERSION_SOURCE_FILES})
 target_compile_definitions(${VERSION_PROJECT} PRIVATE
+    CHATTERINO_EXTRA_BUILD_STRING=${CHATTERINO_EXTRA_BUILD_STRING}
     $<$<BOOL:${WIN32}>:USEWINSDK>
     $<$<BOOL:${BUILD_WITH_CRASHPAD}>:CHATTERINO_WITH_CRASHPAD>
 )

src/common/Version.cpp

@@ -40,6 +40,7 @@ Version::Version()
 
     this->generateBuildString();
     this->generateRunningString();
+    this->generateExtraString();
 
 #ifdef Q_OS_WIN
     // keep in sync with .CI/chatterino-installer.iss
@@ -123,6 +124,11 @@ const QString &Version::runningString() const
     return this->runningString_;
 }
 
+const QString &Version::extraString() const
+{
+    return this->extraString_;
+}
+
 void Version::generateBuildString()
 {
     // e.g. Chatterino 2.3.5 or Chatterino Nightly 2.3.5
@@ -174,6 +180,19 @@ void Version::generateRunningString()
     this->runningString_ = s;
 }
 
+#define STRINGIFY(x) #x
+// NOLINTNEXTLINE(cppcoreguidelines-macro-usage)
+#define STRINGIFY2(x) STRINGIFY(x)
+
+void Version::generateExtraString()
+{
+    this->extraString_ =
+        QStringLiteral(STRINGIFY2(CHATTERINO_EXTRA_BUILD_STRING)).trimmed();
+}
+
+#undef STRINGIFY2
+#undef STRINGIFY
+
 #ifdef Q_OS_WIN
 const std::wstring &Version::appUserModelID() const
 {

src/common/Version.hpp

@@ -60,6 +60,9 @@ public:
     // Returns a string about the current running system
     const QString &runningString() const;
 
+    // Returns an extra string about this specific build
+    const QString &extraString() const;
+
 #ifdef Q_OS_WIN
     /// Chatterino's App ID on Windows
     ///
@@ -85,6 +88,10 @@ private:
     // Generate a running string (e.g. Running on Arch Linux, kernel 5.14.3) and store it in runningString_ for future use
     void generateRunningString();
 
+    QString extraString_;
+    // Generate an extra string (e.g. "Built for Fedora 42.<br>Report bugs <a href...>here</a>")
+    void generateExtraString();
+
 #ifdef Q_OS_WIN
     std::wstring appUserModelID_;
 #endif

src/widgets/settingspages/AboutPage.cpp

@@ -56,10 +56,17 @@ AboutPage::AboutPage()
         auto versionInfo = layout.emplace<QGroupBox>("Version");
         {
             auto vbox = versionInfo.emplace<QVBoxLayout>();
-            auto version = Version::instance();
+            const auto &version = Version::instance();
 
-            auto label = vbox.emplace<QLabel>(version.buildString() + "<br>" +
-                                              version.runningString());
+            QString string =
+                version.buildString() % "<br>" % version.runningString();
+
+            if (!version.extraString().isEmpty())
+            {
+                string += "<br>" % version.extraString();
+            }
+
+            auto label = vbox.emplace<QLabel>(string);
             label->setWordWrap(true);
             label->setOpenExternalLinks(true);
             label->setTextInteractionFlags(Qt::TextBrowserInteraction);