feat: add i18n system with 22 languages

CMakeLists.txt

@@ -39,6 +39,38 @@ endif()
 
 include(${CMAKE_CURRENT_SOURCE_DIR}/resources/cmake/bootstrap_deps.cmake)
 
+# ── Embed locale JSON files as C++ raw string literals ────────────────────────
+# Each src/locales/<lang>.json is read at configure time and appended into
+# build/generated/locale_data.h as  inline const char* kLocaleData_<lang>.
+# Re-run cmake automatically when any JSON changes (CMAKE_CONFIGURE_DEPENDS).
+
+set(_LOCALE_LANGS
+    english russian ukrainian german french spanish italian polish turkish
+    swedish dutch brazilian hungarian indonesian vietnamese
+    schinese tchinese japanese koreana latam
+    bulgarian danish
+)
+set(_LOCALE_HEADER "${CMAKE_BINARY_DIR}/generated/locale_data.h")
+
+file(MAKE_DIRECTORY "${CMAKE_BINARY_DIR}/generated")
+
+# Use file(WRITE/APPEND) directly — avoids CMake list/semicolon expansion bugs
+# that occur when building large strings with string(APPEND) + file(WRITE).
+file(WRITE "${_LOCALE_HEADER}" "// Auto-generated by CMake — do not edit. Re-run cmake to refresh.\n#pragma once\n\n")
+
+foreach(_LANG ${_LOCALE_LANGS})
+    set(_JSON_PATH "${CMAKE_SOURCE_DIR}/src/locales/${_LANG}.json")
+    # Track for automatic re-configure when any JSON file changes
+    set_property(DIRECTORY APPEND PROPERTY CMAKE_CONFIGURE_DEPENDS "${_JSON_PATH}")
+    file(READ "${_JSON_PATH}" _JSON_CONTENT)
+    # Write open, content, close as separate appends so no CMake string
+    # processing can swallow the semicolon in  )__LD__";
+    file(APPEND "${_LOCALE_HEADER}" "inline const char* kLocaleData_${_LANG} = R\"__LD__(\n")
+    file(APPEND "${_LOCALE_HEADER}" "${_JSON_CONTENT}")
+    file(APPEND "${_LOCALE_HEADER}" "\n)__LD__\";\n\n")
+endforeach()
+# ──────────────────────────────────────────────────────────────────────────────
+
 add_library(imgui_lib STATIC
     ${imgui_SOURCE_DIR}/imgui.cpp
     ${imgui_SOURCE_DIR}/imgui_draw.cpp
@@ -62,6 +94,7 @@ set(SOURCES
     src/window/wndproc.cc
     src/window/renderer.cc
     src/util/updater.cc
+    src/util/locale.cc
     src/routes/router.cc
     src/routes/home.cc
     src/routes/install_prompt.cc
@@ -97,6 +130,8 @@ include_directories(SYSTEM ${stb_SOURCE_DIR})
 include_directories(SYSTEM ${zlib_SOURCE_DIR} ${zlib_BINARY_DIR})
 
 target_link_libraries(${PROJECT_NAME} PRIVATE imgui_lib)
+
+target_include_directories(${PROJECT_NAME} PRIVATE "${CMAKE_BINARY_DIR}/generated")
 if(WIN32)
     target_link_options(${PROJECT_NAME} PRIVATE /FORCE:MULTIPLE)
 elseif(UNIX)
@@ -148,3 +183,4 @@ elseif(WIN32)
         bcrypt
     )
 endif()
+

src/components/bottombar.cc

@@ -33,6 +33,9 @@
 #include <dpi.h>
 #include <texture.hh>
 #include <animate.h>
+#include <i18n.h>
+#ifdef _WIN32
+#endif
 #include <format>
 #include <util.h>
 
@@ -65,10 +68,10 @@ const void RenderBottomNavBar(const char* identifier, float xPos, std::function<
         const float cursorPosSave = GetCursorPosX();
 
         SetCursorPosY(GetCursorPosY() - ScaleX(12));
-        TextColored(ImVec4(0.322f, 0.325f, 0.341f, 1.0f), "Steam Homebrew & Millennium are not affiliated with");
+        TextColored(ImVec4(0.322f, 0.325f, 0.341f, 1.0f), "%s", Locale::Get("installerDisclaimer1"));
 
         SetCursorPos({ cursorPosSave, GetCursorPosY() - ScaleY(20) });
-        TextColored(ImVec4(0.322f, 0.325f, 0.341f, 1.0f), "Steam®, Valve, or any of their partners.");
+        TextColored(ImVec4(0.322f, 0.325f, 0.341f, 1.0f), "%s", Locale::Get("installerDisclaimer2"));
 
         SameLine(0);
         SetCursorPosY(GetCursorPosY() - ScaleY(25));
@@ -94,7 +97,7 @@ const void RenderBottomNavBar(const char* identifier, float xPos, std::function<
             PushStyleVar(ImGuiStyleVar_WindowRounding, 6);
             PushStyleVar(ImGuiStyleVar_Alpha, discordIconHoverTransparency);
             PushStyleColor(ImGuiCol_PopupBg, ImVec4(0.098f, 0.102f, 0.11f, 1.0f));
-            SetTooltip("Join Discord Server");
+            SetTooltip("%s", Locale::Get("tooltipDiscord"));
 
             if (IsItemClicked()) {
                 OpenUrl(discordInviteLink);
@@ -125,7 +128,7 @@ const void RenderBottomNavBar(const char* identifier, float xPos, std::function<
             PushStyleVar(ImGuiStyleVar_WindowRounding, 6);
             PushStyleVar(ImGuiStyleVar_Alpha, githubIconHoverTransparency);
             PushStyleColor(ImGuiCol_PopupBg, ImVec4(0.098f, 0.102f, 0.11f, 1.0f));
-            SetTooltip("View Source Code");
+            SetTooltip("%s", Locale::Get("tooltipGithub"));
 
             if (IsItemClicked()) {
                 OpenUrl(githubRepositoryUrl);

src/components/titlebar.cc

@@ -28,15 +28,21 @@
  * SOFTWARE.
  */
 
+#include <exception>
 #include <imgui.h>
 #include <texture.hh>
 #include <dpi.h>
 #include <components.h>
 #include <animate.h>
+#include <i18n.h>
 #include <math.h>
 #include <worker.h>
+#include <renderer.h>
 #include <cstdlib>
 #include <format>
+#ifndef _WIN32
+#include <unistd.h>
+#endif
 
 using namespace ImGui;
 
@@ -46,8 +52,7 @@ using namespace ImGui;
  */
 bool RenderTitleBarComponent(std::shared_ptr<RouterNav> router)
 {
-    ImGuiIO& io = GetIO();
-    const std::string strTitleText = std::format("Steam Homebrew", io.Framerate);
+    const std::string strTitleText = Locale::Get("titlebarTitle");
 
     ImGuiViewport* viewport = GetMainViewport();
     PushStyleVar(ImGuiStyleVar_WindowPadding, ImVec2(ScaleX(15), ScaleY(15)));
@@ -90,13 +95,109 @@ bool RenderTitleBarComponent(std::shared_ptr<RouterNav> router)
         Text("%s", strTitleText.c_str());
         SameLine();
 
+        ImVec2 closeButtonDimensions = { ceil(ScaleX(70)), ceil(ScaleY(43)) };
+
         static bool isCloseButtonHovered = false;
 
         if (isCloseButtonHovered) {
             PushStyleColor(ImGuiCol_ChildBg, ImVec4(0.769f, 0.169f, 0.11f, 1.0f));
         }
 
-        ImVec2 closeButtonDimensions = { ceil(ScaleX(70)), ceil(ScaleY(43)) };
+        static bool langPopupOpen = false;
+
+        ImVec2 langButtonDimensions = { ceil(ScaleX(50)), ceil(ScaleY(43)) };
+        SetCursorPos({ viewport->Size.x - closeButtonDimensions.x - langButtonDimensions.x, 0 });
+
+        PushStyleVar(ImGuiStyleVar_ChildRounding, 0);
+        PushStyleColor(ImGuiCol_ChildBg, ImVec4(0.f, 0.f, 0.f, 0.f));
+        static bool isLangButtonHovered = false;
+        if (isLangButtonHovered)
+            PushStyleColor(ImGuiCol_ChildBg, ImVec4(1.f, 1.f, 1.f, 0.06f));
+
+        BeginChild("##LangButton", { langButtonDimensions.x, langButtonDimensions.y }, false, ImGuiWindowFlags_NoScrollbar);
+        {
+            SetCursorPos({ (langButtonDimensions.x - ScaleX(20)) * 0.5f, ScaleY(12) });
+            Image((ImTextureID)(intptr_t)languageIconTexture, { ScaleX(20), ScaleY(20) });
+        }
+        EndChild();
+
+        ImVec2 langBtnMin = GetItemRectMin();
+        ImVec2 langBtnMax = GetItemRectMax();
+
+        if (isLangButtonHovered)
+            PopStyleColor();
+        PopStyleColor();
+        PopStyleVar();
+
+        if (IsItemClicked(ImGuiMouseButton_Left))
+            OpenPopup("##LangPopup");
+
+        if (IsItemHovered())
+            SetMouseCursor(ImGuiMouseCursor_Hand);
+
+        isLangButtonHovered = IsItemHovered();
+
+        ImGuiIO& io = GetIO();
+        ImFont* vietItemFont = (io.Fonts->Fonts.Size > 2) ? io.Fonts->Fonts[2] : nullptr;
+        ImFont* dropdownFont = (io.Fonts->Fonts.Size > 3) ? io.Fonts->Fonts[3] : nullptr;
+
+        const auto& langs = Locale::GetAvailableLanguages();
+        const std::string& currentLangId = Locale::GetCurrentLanguageId();
+
+        const float popupWidth = ScaleX(400);
+        float anim = EaseInOutFloat("##LangPopupAnim", 0.f, 1.f, IsPopupOpen("##LangPopup"), 0.35f);
+
+        float popupY = langBtnMax.y - ScaleY(6) * (1.f - anim);
+        SetNextWindowPos({ langBtnMax.x - popupWidth, popupY });
+        SetNextWindowSize({ popupWidth, ScaleY(500) });
+        SetNextWindowBgAlpha(anim);
+
+        PushStyleColor(ImGuiCol_PopupBg, ImVec4(0.10f, 0.10f, 0.11f, 1.0f));
+        PushStyleColor(ImGuiCol_Header, ImVec4(0.20f, 0.21f, 0.22f, 1.0f));
+        PushStyleColor(ImGuiCol_HeaderHovered, ImVec4(0.26f, 0.27f, 0.28f, 1.0f));
+        PushStyleColor(ImGuiCol_Border, ImVec4(0.22f, 0.23f, 0.25f, 1.0f));
+        PushStyleVar(ImGuiStyleVar_WindowPadding, ImVec2(ScaleX(6), ScaleY(6)));
+        PushStyleVar(ImGuiStyleVar_ItemSpacing, ImVec2(ScaleX(8), ScaleY(6)));
+        PushStyleVar(ImGuiStyleVar_PopupRounding, ScaleX(4));
+
+        if (dropdownFont)
+            PushFont(dropdownFont);
+
+        if (BeginPopup("##LangPopup", ImGuiWindowFlags_NoMove)) {
+            if (!::IsWindowFocused())
+                CloseCurrentPopup();
+            PushStyleVar(ImGuiStyleVar_Alpha, anim);
+            for (const auto& lang : langs) {
+                bool isSelected = (lang.id == currentLangId);
+                bool useVietFont = (lang.id == "vietnamese") && (vietItemFont != nullptr);
+                if (useVietFont) {
+                    if (dropdownFont)
+                        PopFont();
+                    PushFont(vietItemFont);
+                }
+                if (Selectable(lang.displayName.c_str(), isSelected, 0, ImVec2(popupWidth, 0))) {
+                    Locale::SetLanguage(lang.id);
+                    RequestFontRebuild();
+                    CloseCurrentPopup();
+                }
+                if (isSelected)
+                    SetItemDefaultFocus();
+                if (useVietFont) {
+                    PopFont();
+                    if (dropdownFont)
+                        PushFont(dropdownFont);
+                }
+            }
+            PopStyleVar();
+            EndPopup();
+        }
+
+        if (dropdownFont)
+            PopFont();
+
+        PopStyleVar(3);
+        PopStyleColor(4);
+
         SetCursorPos({ viewport->Size.x - closeButtonDimensions.x, 0 });
 
         PushStyleVar(ImGuiStyleVar_ChildRounding, 0);
@@ -110,7 +211,11 @@ bool RenderTitleBarComponent(std::shared_ptr<RouterNav> router)
 
         if (IsItemClicked(ImGuiMouseButton_Left) && !IsWorkerBusy()) {
             JoinWorker();
+#ifdef _WIN32
             std::exit(0);
+#else
+            _exit(0);
+#endif
         }
 
         if (isCloseButtonHovered) {
@@ -124,3 +229,7 @@ bool RenderTitleBarComponent(std::shared_ptr<RouterNav> router)
 
     return IsItemHovered() || (IsItemHovered(ImGuiHoveredFlags_AllowWhenBlockedByActiveItem) && IsMouseDown(ImGuiMouseButton_Left));
 }
+
+void RenderLanguageSelector(float xPos)
+{
+}