add localization

keep selected language after closing #17
2026-05-10 13:29:54 +02:00
parent b4e889cf33
commit 5883f457a3
4 changed files with 254 additions and 42 deletions
@@ -32,6 +32,7 @@ target_include_directories(imgui PUBLIC
 add_subdirectory(libs/libhydrogen EXCLUDE_FROM_ALL)

 add_executable(work-calendar
+    src/localization.c
    $<$<PLATFORM_ID:Windows>:src/main_win32.cpp>
    $<$<PLATFORM_ID:Linux>:src/main_linux.cpp>
 )
@@ -46,3 +47,8 @@ target_link_libraries(work-calendar
            glfw
        >
 )
+
+target_compile_definitions(work-calendar
+    PRIVATE
+        $<$<PLATFORM_ID:Windows>:_CRT_SECURE_NO_WARNINGS=1>
+)
@@ -0,0 +1,99 @@
+#include "localization.h"
+
+const char *localized_strings_storage[LANGUAGE_COUNT][LOCALIZED_STRING_COUNT] = {
+    [L_GERMAN] = {
+        [LS_LANGUAGE_NAME] = "Deutsch",
+        [LS_JANUARY] = "Januar",
+        [LS_FEBRUARY] = "Februar",
+        [LS_MARCH] = "März",
+        [LS_APRIL] =  "April",
+        [LS_MAY] = "Mai",
+        [LS_JUNE] = "Juni",
+        [LS_JULY] = "Juli",
+        [LS_AUGUST] = "August",
+        [LS_SEPTEMBER] = "September",
+        [LS_OCTOBER] = "Oktober",
+        [LS_NOVEMBER] = "November",
+        [LS_DECEMBER] = "Dezember",
+        [LS_FILE] = "Datei",
+        [LS_OPEN] = "Öffnen",
+        [LS_SAVE] = "Speichern",
+        [LS_SAVE_AS] = "Speichern unter",
+        [LS_CLOSE_CALENDAR] = "Kalender schließen",
+        [LS_EXIT] = "Beenden",
+        [LS_VIEW] = "Ansicht",
+        [LS_LEGEND] = "Legende",
+        [LS_LANGUAGE] = "Sprache",
+        [LS_HELP] = "Hilfe",
+        [LS_DEMO] = "Demo",
+        [LS_WIKI] = "Wiki",
+        [LS_ABOUT] = "Über",
+        [LS_CALENDAR_WEEK_SHORT] = "KW",
+        [LS_MONDAY_SHORT] = "Mo",
+        [LS_TUESDAY_SHORT] = "Di",
+        [LS_WEDNESDAY_SHORT] = "Mi",
+        [LS_THURSDAY_SHORT] = "Do",
+        [LS_FRIDAY_SHORT] = "Fr",
+        [LS_SATURDAY_SHORT] = "Sa",
+        [LS_SUNDAY_SHORT] = "So",
+        [LS_TITLE_ENTER_PASSWORD] = "Passwort eingeben###Save",
+        [LS_PASSWORD] = "Passwort",
+        [LS_CONFIRM_PASSWORD] = "Passwort bestätigen",
+        [LS_OK] = "Ok",
+        [LS_CANCEL] = "Abbrechen",
+        [LS_TITLE_OPEN_PASSWORD] = "Passwort eingeben###Open",
+        [LS_CLOSE] = "Schließen",
+        [LS_QUESTION_DO_YOU_REALLY_WANT_TO_QUIT] = "Möchten Sie wirklich beenden?",
+        [LS_YES] = "Ja",
+        [LS_NO] = "Nein",
+    },
+    [L_ENGLISH] = {
+        [LS_LANGUAGE_NAME] = "English",
+        [LS_JANUARY] = "January",
+        [LS_FEBRUARY] = "February",
+        [LS_MARCH] = "March",
+        [LS_APRIL] =  "April",
+        [LS_MAY] = "May",
+        [LS_JUNE] = "June",
+        [LS_JULY] = "July",
+        [LS_AUGUST] = "August",
+        [LS_SEPTEMBER] = "September",
+        [LS_OCTOBER] = "October",
+        [LS_NOVEMBER] = "November",
+        [LS_DECEMBER] = "December",
+        [LS_FILE] = "File",
+        [LS_OPEN] = "Open",
+        [LS_SAVE] = "Save",
+        [LS_SAVE_AS] = "Save as",
+        [LS_CLOSE_CALENDAR] = "Close Calendar",
+        [LS_EXIT] = "Exit",
+        [LS_VIEW] = "View",
+        [LS_LEGEND] = "Legend",
+        [LS_LANGUAGE] = "Language",
+        [LS_HELP] = "Help",
+        [LS_DEMO] = "Demo",
+        [LS_WIKI] = "Wiki",
+        [LS_ABOUT] = "About",
+        [LS_CALENDAR_WEEK_SHORT] = "No.",
+        [LS_MONDAY_SHORT] = "Mo",
+        [LS_TUESDAY_SHORT] = "Tu",
+        [LS_WEDNESDAY_SHORT] = "We",
+        [LS_THURSDAY_SHORT] = "Th",
+        [LS_FRIDAY_SHORT] = "Fr",
+        [LS_SATURDAY_SHORT] = "Sa",
+        [LS_SUNDAY_SHORT] = "Su",
+        [LS_TITLE_ENTER_PASSWORD] = "Enter Password###Save",
+        [LS_PASSWORD] = "Password",
+        [LS_CONFIRM_PASSWORD] = "Confirm Password",
+        [LS_OK] = "Ok",
+        [LS_CANCEL] = "Cancel",
+        [LS_TITLE_OPEN_PASSWORD] = "Enter Password###Open",
+        [LS_CLOSE] = "Close",
+        [LS_QUESTION_DO_YOU_REALLY_WANT_TO_QUIT] = "Do you really want to quit?",
+        [LS_YES] = "Yes",
+        [LS_NO] = "No",
+    },
+    [L_FRENCH] = {
+        [LS_LANGUAGE_NAME] = "Français",
+    }
+};
@@ -0,0 +1,66 @@
+#pragma once
+
+enum Localized_String {
+    LS_JANUARY,
+    LS_FEBRUARY,
+    LS_MARCH,
+    LS_APRIL,
+    LS_MAY,
+    LS_JUNE,
+    LS_JULY,
+    LS_AUGUST,
+    LS_SEPTEMBER,
+    LS_OCTOBER,
+    LS_NOVEMBER,
+    LS_DECEMBER,
+    LS_LANGUAGE_NAME,
+    LS_FILE,
+    LS_OPEN,
+    LS_SAVE,
+    LS_SAVE_AS,
+    LS_CLOSE_CALENDAR,
+    LS_EXIT,
+    LS_VIEW,
+    LS_LEGEND,
+    LS_LANGUAGE,
+    LS_HELP,
+    LS_DEMO,
+    LS_WIKI,
+    LS_ABOUT,
+    LS_CALENDAR_WEEK_SHORT,
+    LS_MONDAY_SHORT,
+    LS_TUESDAY_SHORT,
+    LS_WEDNESDAY_SHORT,
+    LS_THURSDAY_SHORT,
+    LS_FRIDAY_SHORT,
+    LS_SATURDAY_SHORT,
+    LS_SUNDAY_SHORT,
+    LS_TITLE_ENTER_PASSWORD,
+    LS_PASSWORD,
+    LS_CONFIRM_PASSWORD,
+    LS_OK,
+    LS_CANCEL,
+    LS_TITLE_OPEN_PASSWORD,
+    LS_CLOSE,
+    LS_QUESTION_DO_YOU_REALLY_WANT_TO_QUIT,
+    LS_YES,
+    LS_NO,
+    LOCALIZED_STRING_COUNT
+};
+
+enum Language {
+    L_GERMAN,
+    L_ENGLISH,
+    L_FRENCH,
+    LANGUAGE_COUNT
+};
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+extern const char *localized_strings_storage[LANGUAGE_COUNT][LOCALIZED_STRING_COUNT];
+
+#ifdef __cplusplus
+}
+#endif
@@ -5,10 +5,11 @@
 #include <stdint.h>
 #include <hydrogen.h>

+#include "localization.h"
+
 #include "inter.h"
 #include "inter-bold.h"

-
 extern bool should_exit;
 extern bool show_demo_window;

@@ -37,7 +38,7 @@ int get_current_year(){
     
    // tm_year is years since 1900
    return year = current_year;
-}
+} 

 bool is_leap_year(int year) {
    return  ((year % 4) == 0 && (year % 100) != 0) || year % 400 == 0;
@@ -77,18 +78,49 @@ static uint8_t derived_key[hydro_secretbox_KEYBYTES];
 static char password_input_buffer[256];
 static char password_confirmation_input_buffer[256];

+static Language current_language = L_GERMAN; 
+static Language selected_language = L_GERMAN;
+
+const char *get_localized_string(Localized_String localized_string) {
+    if(localized_strings_storage[current_language][localized_string]) {
+        return localized_strings_storage[current_language][localized_string];
+    }
+
+    return localized_strings_storage[L_ENGLISH][localized_string];
+}
+
 void init() {
    hydro_init();
    ImGuiIO &io = ImGui::GetIO();
    inter_regular = io.Fonts->AddFontFromMemoryCompressedTTF(inter_compressed_data, inter_compressed_size);
    inter_bold    = io.Fonts->AddFontFromMemoryCompressedTTF(inter_bold_compressed_data, inter_bold_compressed_size);
    year = get_current_year();
+
+    ImGuiSettingsHandler settings_handler = {};
+    settings_handler.TypeName = "Calendar";
+    settings_handler.TypeHash = ImHashStr("Calendar");
+    settings_handler.ReadOpenFn = [](ImGuiContext *context, ImGuiSettingsHandler *handler, const char *name) -> void * {
+        return (void *)-1;
+    };
+    settings_handler.ReadLineFn = [](ImGuiContext *context, ImGuiSettingsHandler *handler, void *entry, const char *line) {
+        if (strncmp(line, "language", sizeof("language") - 1) == 0) {
+            for (int i = 0; i < LANGUAGE_COUNT; i++) {
+                if (strncmp(line + sizeof("language"), localized_strings_storage[i][LS_LANGUAGE_NAME], strlen(localized_strings_storage[i][LS_LANGUAGE_NAME])) == 0)
+                    selected_language = (Language)i;
+            }
+        }
+    };
+    settings_handler.WriteAllFn = [](ImGuiContext *context, ImGuiSettingsHandler *handler, ImGuiTextBuffer *buffer) {
+        buffer->append("[Calendar][Settings]\n");
+        buffer->appendf("language=%s\n\n", get_localized_string(LS_LANGUAGE_NAME));
+    };
+    ImGui::AddSettingsHandler(&settings_handler);
 }

 static char *save_file_path = NULL;
 static const char *wiki_url = "https://gitea.ammerhai.com/Ammerhai/work-calendar/wiki";

-static const char *month_names[] = {"Januar", "Februar", "März", "April", "Mai", "Juni", "Juli", "August", "September", "Oktober", "November", "Dezember"};
+static Localized_String month_names[] = { LS_JANUARY, LS_FEBRUARY, LS_MARCH, LS_APRIL, LS_MAY, LS_JUNE, LS_JULY, LS_AUGUST, LS_SEPTEMBER, LS_OCTOBER, LS_NOVEMBER, LS_DECEMBER };

 typedef struct Category {
    bool editing;
@@ -222,6 +254,8 @@ void load(){
 }

 void per_frame(){
+    current_language = selected_language;
+
    ImGuiStyle &style = ImGui::GetStyle();
    ImVec2 center = ImGui::GetMainViewport()->GetCenter();

@@ -242,12 +276,12 @@ void per_frame(){
    ImGui::DockSpaceOverViewport(main_viewport_dock, ImGui::GetMainViewport(), ImGuiDockNodeFlags_NoTabBar);

    ImGuiID close_popup  = ImGui::GetID("Close");
-    ImGuiID save_password_popup = ImGui::GetID("Passwort eingeben##Save");
-    ImGuiID open_password_popup = ImGui::GetID("Passwort eingeben##Open");
+    ImGuiID save_password_popup = ImGui::GetID("###Save");
+    ImGuiID open_password_popup = ImGui::GetID("###Open");

    if (ImGui::BeginMainMenuBar()) {
-        if (ImGui::BeginMenu("Datei")) {
-            if (ImGui::MenuItem("Öffnen", "Ctrl + O")) {
+        if (ImGui::BeginMenu(get_localized_string(LS_FILE))) {
+            if (ImGui::MenuItem(get_localized_string(LS_OPEN), "Ctrl + O")) {
                char *new_save_file_path = open_file_dialog();
                if (new_save_file_path) {
                    if (save_file_path) free(save_file_path);
@@ -255,11 +289,11 @@ void per_frame(){
                    ImGui::OpenPopup(open_password_popup);
                }
            }
-            if (ImGui::MenuItem("Speichern", "Ctrl + S", false, !!save_file_path)) {
+            if (ImGui::MenuItem(get_localized_string(LS_SAVE), "Ctrl + S", false, !!save_file_path)) {
                save();
            }

-            if (ImGui::MenuItem("Speichern unter", "Ctrl + Shift + S")) {
+            if (ImGui::MenuItem(get_localized_string(LS_SAVE_AS), "Ctrl + Shift + S")) {
                char *new_save_file_path = save_file_dialog();
                if (new_save_file_path) {
                    if (save_file_path) free(save_file_path);
@@ -270,7 +304,7 @@ void per_frame(){

            //TODO
            ImGui::Separator();
-            if (ImGui::MenuItem("Kalender Schließen", "Ctrl + X")) {
+            if (ImGui::MenuItem(get_localized_string(LS_CLOSE_CALENDAR), "Ctrl + X")) {
                //TODO if calendar is opened warning
                
                if (save_file_path) free(save_file_path);
@@ -284,24 +318,31 @@ void per_frame(){
            }

            ImGui::Separator();
-            if (ImGui::MenuItem("Beenden", NULL)) {
+            if (ImGui::MenuItem(get_localized_string(LS_EXIT), NULL)) {
                ImGui::OpenPopup(close_popup);
            }
            ImGui::EndMenu();
        }

-        if (ImGui::BeginMenu("Ansicht")) {
-            ImGui::MenuItem("Legende", NULL, &legend_visible);
+        if (ImGui::BeginMenu(get_localized_string(LS_VIEW))) {
+            ImGui::MenuItem(get_localized_string(LS_LEGEND), NULL, &legend_visible);
+            if (ImGui::BeginMenu(get_localized_string(LS_LANGUAGE))) {
+                for (int language = 0; language < LANGUAGE_COUNT; language++) {
+                    if (ImGui::MenuItem(localized_strings_storage[language][LS_LANGUAGE_NAME], NULL, current_language == language))
+                        selected_language = (Language) language;
+                }
+                ImGui::EndMenu();
+            }
            ImGui::EndMenu();
        }

-        if (ImGui::BeginMenu("Hilfe")) {
-            ImGui::MenuItem("Demo", NULL, &show_demo_window);
-            if (ImGui::MenuItem("Wiki", NULL)) {
+        if (ImGui::BeginMenu(get_localized_string(LS_HELP))) {
+            ImGui::MenuItem(get_localized_string(LS_DEMO), NULL, &show_demo_window);
+            if (ImGui::MenuItem(get_localized_string(LS_WIKI), NULL)) {
                ImGui::GetPlatformIO().Platform_OpenInShellFn(ImGui::GetCurrentContext(), wiki_url);
            }
            ImGui::Separator();
-            ImGui::MenuItem("Über", NULL); //TODO
+            ImGui::MenuItem(get_localized_string(LS_ABOUT), NULL); //TODO
            ImGui::EndMenu();
        }

@@ -309,24 +350,24 @@ void per_frame(){
    }

    ImGui::SetNextWindowPos(center, ImGuiCond_Appearing, ImVec2(0.5f, 0.5f));
-    if (ImGui::BeginPopupModal("Passwort eingeben##Save", NULL, ImGuiWindowFlags_AlwaysAutoResize)) {
+    if (ImGui::BeginPopupModal(get_localized_string(LS_TITLE_ENTER_PASSWORD), NULL, ImGuiWindowFlags_AlwaysAutoResize)) {
        ImGui::PushStyleVar(ImGuiStyleVar_FrameBorderSize, 1.0f);

        ImGui::AlignTextToFramePadding();
-        ImGui::Text("Passwort");
+        ImGui::Text("%s", get_localized_string(LS_PASSWORD));
        ImGui::SameLine();
        ImGui::SetNextItemWidth(-1);
-        ImGui::InputText("##Passwort", password_input_buffer, sizeof(password_input_buffer), ImGuiInputTextFlags_Password);
+        ImGui::InputText("##Password", password_input_buffer, sizeof(password_input_buffer), ImGuiInputTextFlags_Password);

        ImGui::AlignTextToFramePadding();
-        ImGui::Text("Passwort bestätigen");
+        ImGui::Text("%s", get_localized_string(LS_CONFIRM_PASSWORD));
        ImGui::SameLine();
        ImGui::SetNextItemWidth(-1);
-        ImGui::InputText("##Passwort bestätigen", password_confirmation_input_buffer, sizeof(password_confirmation_input_buffer), ImGuiInputTextFlags_Password);
+        ImGui::InputText("##Confirm_Password", password_confirmation_input_buffer, sizeof(password_confirmation_input_buffer), ImGuiInputTextFlags_Password);

        ImGui::PopStyleVar();

-        if (ImGui::Button("OK", ImVec2(120, 0))) { 
+        if (ImGui::Button(get_localized_string(LS_OK), ImVec2(120, 0))) { 
            if (hydro_compare((uint8_t *)password_input_buffer, (uint8_t *) password_confirmation_input_buffer, sizeof(password_input_buffer)) == 0) {
                hydro_pwhash_deterministic(derived_key, sizeof derived_key, password_input_buffer, strlen(password_input_buffer), HYDROGEN_CONTEXT, 
                    master_key, HYDROGEN_OPSLIMIT, HYDROGEN_MEMLIMIT, HYDROGEN_THREADS);
@@ -339,7 +380,7 @@ void per_frame(){
        }

        ImGui::SameLine();
-        if (ImGui::Button("Abbrechen", ImVec2(120, 0))) { 
+        if (ImGui::Button(get_localized_string(LS_CANCEL), ImVec2(120, 0))) { 
            ImGui::CloseCurrentPopup(); 
            hydro_memzero(password_input_buffer, sizeof(password_input_buffer));
            hydro_memzero(password_confirmation_input_buffer, sizeof(password_confirmation_input_buffer));
@@ -349,18 +390,18 @@ void per_frame(){
    }

    ImGui::SetNextWindowPos(center, ImGuiCond_Appearing, ImVec2(0.5f, 0.5f));
-    if (ImGui::BeginPopupModal("Passwort eingeben##Open", NULL, ImGuiWindowFlags_AlwaysAutoResize)) {
+    if (ImGui::BeginPopupModal(get_localized_string(LS_TITLE_OPEN_PASSWORD), NULL, ImGuiWindowFlags_AlwaysAutoResize)) {
        ImGui::PushStyleVar(ImGuiStyleVar_FrameBorderSize, 1.0f);

        ImGui::AlignTextToFramePadding();
-        ImGui::Text("Passwort");
+        ImGui::Text("%s", get_localized_string(LS_PASSWORD));
        ImGui::SameLine();
        ImGui::SetNextItemWidth(-1);
        ImGui::InputText("##Passwort", password_input_buffer, sizeof(password_input_buffer), ImGuiInputTextFlags_Password);

        ImGui::PopStyleVar();

-        if (ImGui::Button("OK", ImVec2(120, 0))) { 
+        if (ImGui::Button(get_localized_string(LS_OK), ImVec2(120, 0))) { 
            hydro_pwhash_deterministic(derived_key, sizeof derived_key, password_input_buffer, strlen(password_input_buffer), HYDROGEN_CONTEXT, 
                master_key, HYDROGEN_OPSLIMIT, HYDROGEN_MEMLIMIT, HYDROGEN_THREADS);
            hydro_memzero(password_input_buffer, sizeof(password_input_buffer));
@@ -370,28 +411,28 @@ void per_frame(){
        }

        ImGui::SameLine();
-        if (ImGui::Button("Abbrechen", ImVec2(120, 0))) { 
+        if (ImGui::Button(get_localized_string(LS_CANCEL), ImVec2(120, 0))) { 
            if (save_file_path) free(save_file_path);
            save_file_path = NULL;
            ImGui::CloseCurrentPopup(); 
            hydro_memzero(password_input_buffer, sizeof(password_input_buffer));
        }
        
-        ImGui::EndPopup();
+        ImGui::EndPopup(); 
    }

    ImGui::SetNextWindowPos(center, ImGuiCond_Appearing, ImVec2(0.5f, 0.5f));
-    if (ImGui::BeginPopupModal("Close", NULL, ImGuiWindowFlags_NoTitleBar | ImGuiWindowFlags_AlwaysAutoResize)) {
-        ImGui::Text("Möchten Sie wirklich beenden?");
+    if (ImGui::BeginPopupModal(get_localized_string(LS_CLOSE), NULL, ImGuiWindowFlags_NoTitleBar | ImGuiWindowFlags_AlwaysAutoResize)) {
+        ImGui::Text("%s", get_localized_string(LS_QUESTION_DO_YOU_REALLY_WANT_TO_QUIT));

        ImGui::SetItemDefaultFocus();
-        if (ImGui::Button("Ja", ImVec2(120, 0))) { 
+        if (ImGui::Button(get_localized_string(LS_YES), ImVec2(120, 0))) { 
            should_exit = true;
            ImGui::CloseCurrentPopup(); 
        }

        ImGui::SameLine();
-        if (ImGui::Button("Nein", ImVec2(120, 0))) { 
+        if (ImGui::Button(get_localized_string(LS_NO), ImVec2(120, 0))) { 
            ImGui::CloseCurrentPopup(); 
        }
        
@@ -437,7 +478,7 @@ void per_frame(){
            if (ImGui::BeginTable("Month", 1, ImGuiTableFlags_SizingFixedFit | ImGuiTableFlags_NoHostExtendX)) {
                ImGui::TableNextRow();
                ImGui::TableSetColumnIndex(0);
-                ImGui::TextAligned(0.5, -FLT_MIN, month_names[month - 1]);
+                ImGui::TextAligned(0.5, -FLT_MIN, get_localized_string(month_names[month - 1]));

                ImGui::TableNextRow();
                ImGui::TableSetColumnIndex(0);
@@ -446,7 +487,7 @@ void per_frame(){
                if (ImGui::BeginTable("CalendarWeek", 1, ImGuiTableFlags_SizingFixedFit | ImGuiTableFlags_NoHostExtendX | ImGuiTableFlags_Borders)){
                    ImGui::TableNextRow();
                    ImGui::TableSetColumnIndex(0);
-                    ImGui::TextAligned(0.5, -FLT_MIN, "KW");
+                    ImGui::TextAligned(0.5, -FLT_MIN, get_localized_string(LS_CALENDAR_WEEK_SHORT));

                    for (int day = 1; day <= days_per_month(year, month); day++) {
                        int weekday = weekday_from_day(year, month, day);
@@ -474,13 +515,13 @@ void per_frame(){

                if (ImGui::BeginTable("Weekdays", 7, ImGuiTableFlags_SizingFixedFit | ImGuiTableFlags_NoHostExtendX | ImGuiTableFlags_Borders)){

-                    ImGui::TableSetupColumn("Mo");
-                    ImGui::TableSetupColumn("Di");
-                    ImGui::TableSetupColumn("Mi");
-                    ImGui::TableSetupColumn("Do");
-                    ImGui::TableSetupColumn("Fr");
-                    ImGui::TableSetupColumn("Sa");
-                    ImGui::TableSetupColumn("So");
+                    ImGui::TableSetupColumn(get_localized_string(LS_MONDAY_SHORT));
+                    ImGui::TableSetupColumn(get_localized_string(LS_TUESDAY_SHORT));
+                    ImGui::TableSetupColumn(get_localized_string(LS_WEDNESDAY_SHORT));
+                    ImGui::TableSetupColumn(get_localized_string(LS_THURSDAY_SHORT));
+                    ImGui::TableSetupColumn(get_localized_string(LS_FRIDAY_SHORT));
+                    ImGui::TableSetupColumn(get_localized_string(LS_SATURDAY_SHORT));
+                    ImGui::TableSetupColumn(get_localized_string(LS_SUNDAY_SHORT));
                    ImGui::TableHeadersRow();

                    ImGui::EndTable();