изменено: CMakeLists.txt

новый файл:    cmake/Info.plist.in
	новый файл:    default.nix
	новый файл:    desktop.nix
	новый файл:    packaging/linux/idef0-editor.desktop
	новый файл:    packaging/linux/idef0.xml
	новый файл:    packaging/windows/idef0-file-association.reg.in
	изменено:      src/MainWindow.cpp
	изменено:      src/MainWindow.h
	изменено:      src/items/ArrowItem.cpp
	изменено:      src/items/ArrowItem.h
	изменено:      src/items/BlockItem.cpp
	изменено:      src/items/BlockItem.h
	изменено:      src/items/DiagramScene.cpp
	изменено:      src/items/DiagramScene.h
	новый файл:    src/plugins/Manual.md
	новый файл:    src/plugins/PluginApi.h
	новый файл:    src/plugins/PluginManager.cpp
	новый файл:    src/plugins/PluginManager.h
	новый файл:    src/plugins/color/ColorsPlugin.cpp
	новый файл:    src/plugins/color/ColorsPlugin.h
	новый файл:    src/plugins/color/translations/colors_en.ts
	новый файл:    src/plugins/color/translations/colors_fr.ts
	новый файл:    src/plugins/color/translations/colors_ru.ts
	новый файл:    translations/README.txt
	новый файл:    translations/idef0_en.ts
	новый файл:    translations/idef0_fr.ts
	новый файл:    translations/idef0_ru.ts

CMakeLists.txt

@@ -8,14 +8,21 @@ find_package(Qt6 REQUIRED COMPONENTS Widgets)
 
 qt_standard_project_setup()
 
-qt_add_executable(idef0_editor
-  src/main.cpp
+qt_add_library(idef0_core SHARED
   src/MainWindow.h src/MainWindow.cpp
   src/items/DiagramScene.h src/items/DiagramScene.cpp
   src/items/BlockItem.h   src/items/BlockItem.cpp
   src/items/ArrowItem.h   src/items/ArrowItem.cpp
   src/items/JunctionItem.h src/items/JunctionItem.cpp
   src/items/HeaderFooterItem.h src/items/HeaderFooterItem.cpp
+  src/plugins/PluginApi.h
+  src/plugins/PluginManager.h src/plugins/PluginManager.cpp
+)
+
+option(BUILD_COLORS_PLUGIN "Build the Colors plugin" ON)
+
+qt_add_executable(idef0_editor
+  src/main.cpp
 )
 
 if(APPLE)
@@ -36,14 +43,51 @@ endif()
 
 target_compile_definitions(idef0_editor PRIVATE $<$<NOT:$<CONFIG:Debug>>:QT_NO_DEBUG_OUTPUT>)
 
+target_include_directories(idef0_core PRIVATE src)
 target_include_directories(idef0_editor PRIVATE src)
 
-target_link_libraries(idef0_editor PRIVATE Qt6::Widgets)
+target_link_libraries(idef0_core PRIVATE Qt6::Widgets)
+target_link_libraries(idef0_editor PRIVATE Qt6::Widgets idef0_core)
+set_target_properties(idef0_core PROPERTIES
+  WINDOWS_EXPORT_ALL_SYMBOLS ON
+  LIBRARY_OUTPUT_DIRECTORY "${CMAKE_BINARY_DIR}"
+  RUNTIME_OUTPUT_DIRECTORY "${CMAKE_BINARY_DIR}"
+  INSTALL_RPATH "\$ORIGIN"
+)
+
+if(BUILD_COLORS_PLUGIN)
+  add_library(colorsplugin MODULE
+    src/plugins/color/ColorsPlugin.h
+    src/plugins/color/ColorsPlugin.cpp
+  )
+  target_link_libraries(colorsplugin PRIVATE idef0_core Qt6::Widgets)
+  target_include_directories(colorsplugin PRIVATE src)
+  set_target_properties(colorsplugin PROPERTIES
+    LIBRARY_OUTPUT_DIRECTORY "${CMAKE_BINARY_DIR}/plugins/color"
+    RUNTIME_OUTPUT_DIRECTORY "${CMAKE_BINARY_DIR}/plugins/color"
+    INSTALL_RPATH "\$ORIGIN/../../lib"
+  )
+endif()
+
+set_target_properties(idef0_editor PROPERTIES
+  INSTALL_RPATH "\$ORIGIN/../lib"
+)
 
 install(TARGETS idef0_editor
   BUNDLE DESTINATION .
   RUNTIME DESTINATION bin
 )
+install(TARGETS idef0_core
+  LIBRARY DESTINATION lib
+  RUNTIME DESTINATION bin
+  ARCHIVE DESTINATION lib
+)
+if(BUILD_COLORS_PLUGIN)
+  install(TARGETS colorsplugin
+    LIBRARY DESTINATION plugins/color
+    RUNTIME DESTINATION plugins/color
+  )
+endif()
 
 if(UNIX AND NOT APPLE)
   install(FILES ${CMAKE_CURRENT_SOURCE_DIR}/packaging/linux/idef0-editor.desktop

cmake/Info.plist.in

@@ -0,0 +1,66 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<!DOCTYPE plist PUBLIC "-//Apple//DTD PLIST 1.0//EN"
+  "http://www.apple.com/DTDs/PropertyList-1.0.dtd">
+<plist version="1.0">
+<dict>
+  <key>CFBundleDevelopmentRegion</key>
+  <string>en</string>
+  <key>CFBundleExecutable</key>
+  <string>${EXECUTABLE_NAME}</string>
+  <key>CFBundleIdentifier</key>
+  <string>@MACOS_BUNDLE_ID@</string>
+  <key>CFBundleInfoDictionaryVersion</key>
+  <string>6.0</string>
+  <key>CFBundleName</key>
+  <string>@MACOS_BUNDLE_NAME@</string>
+  <key>CFBundlePackageType</key>
+  <string>APPL</string>
+  <key>CFBundleShortVersionString</key>
+  <string>1.0</string>
+  <key>CFBundleVersion</key>
+  <string>1</string>
+  <key>LSMinimumSystemVersion</key>
+  <string>11.0</string>
+  <key>NSHighResolutionCapable</key>
+  <true/>
+
+  <key>UTExportedTypeDeclarations</key>
+  <array>
+    <dict>
+      <key>UTTypeIdentifier</key>
+      <string>com.gregorybednov.idef0</string>
+      <key>UTTypeDescription</key>
+      <string>IDEF0 Diagram</string>
+      <key>UTTypeConformsTo</key>
+      <array>
+        <string>public.data</string>
+      </array>
+      <key>UTTypeTagSpecification</key>
+      <dict>
+        <key>public.filename-extension</key>
+        <array>
+          <string>idef0</string>
+        </array>
+        <key>public.mime-type</key>
+        <string>application/x-idef0+json</string>
+      </dict>
+    </dict>
+  </array>
+
+  <key>CFBundleDocumentTypes</key>
+  <array>
+    <dict>
+      <key>CFBundleTypeName</key>
+      <string>IDEF0 Diagram</string>
+      <key>CFBundleTypeRole</key>
+      <string>Editor</string>
+      <key>LSHandlerRank</key>
+      <string>Owner</string>
+      <key>LSItemContentTypes</key>
+      <array>
+        <string>com.gregorybednov.idef0</string>
+      </array>
+    </dict>
+  </array>
+</dict>
+</plist>

default.nix

@@ -0,0 +1,74 @@
+{ pkgs ? import <nixpkgs> {}
+, buildColorsPlugin ? true
+}:
+
+let
+  inherit (pkgs) lib stdenv cmake pkg-config;
+  qt = pkgs.qt6;
+in
+stdenv.mkDerivation rec {
+  pname = "idef0_editor";
+  version = "0.1.0";
+
+  src = lib.cleanSourceWith {
+    src = ./.;
+    filter = path: type:
+      (lib.cleanSourceFilter path type)
+      && (builtins.baseNameOf path != "build");
+  };
+
+  nativeBuildInputs = [
+    cmake
+    pkg-config
+    qt.wrapQtAppsHook
+    qt.qttools
+  ];
+
+  buildInputs = [
+    qt.qtbase
+  ];
+
+  configurePhase = ''
+    cmake -S . -B build -DCMAKE_BUILD_TYPE=Release \
+      -DCMAKE_INSTALL_PREFIX=$out \
+      -DBUILD_COLORS_PLUGIN=${if buildColorsPlugin then "ON" else "OFF"}
+  '';
+
+  buildPhase = ''
+    cmake --build build
+    find . -path "*/translations/*.ts" -print0 | while IFS= read -r -d "" f; do
+      out_path=$(printf '%s\n' "$f" | sed 's/\.ts$/.qm/')
+      lrelease "$f" -qm "$out_path"
+    done
+  '';
+
+  installPhase = ''
+    runHook preInstall
+    cmake --install build --prefix $out
+    # app translations
+    if [ -d translations ]; then
+      mkdir -p $out/share/idef0/translations
+      find translations -maxdepth 1 -type f -name '*.qm' -print0 | xargs -0 -r cp -t $out/share/idef0/translations
+    fi
+    # plugin translations
+    find src/plugins -path "*/translations/*.qm" -print0 | while IFS= read -r -d "" f; do
+      rel="''${f#src/plugins/}"          # e.g., color/translations/colors_en.qm
+      plugdir="''${rel%%/translations/*}" # e.g., color
+      dest="$out/plugins/$plugdir/translations"
+      mkdir -p "$dest"
+      cp "$f" "$dest/"
+    done
+    runHook postInstall
+  '';
+
+  qtWrapperArgs = [
+    "--set" "QT_LOGGING_RULES" "qt.qpa.wayland.textinput=false"
+  ];
+
+  meta = with lib; {
+    description = "IDEF0 diagram editor built with Qt 6 Widgets";
+    license = licenses.lgpl3Plus;
+    mainProgram = "idef0_editor";
+    platforms = platforms.linux;
+  };
+}

desktop.nix

@@ -0,0 +1,9 @@
+{ pkgs ? import <nixpkgs> {} }:
+
+# Desktop-focused Nix entrypoint for NixOS distributions.
+# Currently this reuses default.nix, which already installs:
+# - binary
+# - translations
+# - .desktop launcher
+# - MIME package (application/x-idef0+json for *.idef0)
+import ./default.nix { inherit pkgs; }

packaging/linux/idef0-editor.desktop

@@ -0,0 +1,9 @@
+[Desktop Entry]
+Type=Application
+Name=IDEF0 Editor
+Comment=IDEF0 diagram editor
+Exec=idef0_editor %f
+Terminal=false
+Categories=Office;Graphics;
+MimeType=application/x-idef0+json;
+StartupNotify=true

packaging/linux/idef0.xml

@@ -0,0 +1,7 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<mime-info xmlns="http://www.freedesktop.org/standards/shared-mime-info">
+  <mime-type type="application/x-idef0+json">
+    <comment>IDEF0 diagram</comment>
+    <glob pattern="*.idef0"/>
+  </mime-type>
+</mime-info>

packaging/windows/idef0-file-association.reg.in

@@ -0,0 +1,18 @@
+Windows Registry Editor Version 5.00
+
+[HKEY_CURRENT_USER\Software\Classes\.idef0]
+@="IDEF0Editor.Document"
+"Content Type"="application/x-idef0+json"
+
+[HKEY_CURRENT_USER\Software\Classes\IDEF0Editor.Document]
+@="IDEF0 Diagram"
+
+[HKEY_CURRENT_USER\Software\Classes\IDEF0Editor.Document\DefaultIcon]
+@="@APP_EXE@,0"
+
+[HKEY_CURRENT_USER\Software\Classes\IDEF0Editor.Document\shell]
+
+[HKEY_CURRENT_USER\Software\Classes\IDEF0Editor.Document\shell\open]
+
+[HKEY_CURRENT_USER\Software\Classes\IDEF0Editor.Document\shell\open\command]
+@="\"@APP_EXE@\" \"%1\""

src/MainWindow.cpp

@@ -32,7 +32,6 @@
 #include <QCloseEvent>
 #include <QInputDialog>
 #include <QShortcut>
-#include <QColorDialog>
 #include <QApplication>
 #include <QPalette>
 #include <QStyleHints>
@@ -44,10 +43,13 @@
 #include <QPageSize>
 #include <QPageLayout>
 #include <QPainter>
+#include <QCoreApplication>
+#include <QtGlobal>
 #include "items/BlockItem.h"
+#include "plugins/PluginManager.h"
 
-static const char* kDiagramFileFilter = "IDEF0 Diagram (*.idef0);;JSON Diagram (*.json)";
-static const char* kPdfFileFilter = "PDF (*.pdf)";
+static const char* kDiagramFileFilter = QT_TR_NOOP("IDEF0 Diagram (*.idef0);;JSON Diagram (*.json)");
+static const char* kPdfFileFilter = QT_TR_NOOP("PDF (*.pdf)");
 
 static QPageSize::PageSizeId pageSizeFromMeta(const QVariantMap& meta) {
   const QString size = meta.value("pageSize", "A4").toString();
@@ -59,7 +61,8 @@ static QPageSize::PageSizeId pageSizeFromMeta(const QVariantMap& meta) {
 
 static QPageLayout::Orientation pageOrientationFromMeta(const QVariantMap& meta) {
   const QString orient = meta.value("pageOrientation").toString();
-  if (orient == QObject::tr("Portrait") || orient == "Portrait") {
+  const QString portrait = QCoreApplication::translate("MainWindow", "Portrait");
+  if (orient == portrait || orient == "Portrait") {
     return QPageLayout::Portrait;
   }
   return QPageLayout::Landscape;
@@ -125,7 +128,9 @@ void MainWindow::setupActions() {
 
   auto* editMenu = menuBar()->addMenu(tr("&Edit"));
   auto* actSwapNums = new QAction(tr("Swap numbers…"), this);
+  auto* actCallMech = new QAction(tr("Call Mechanism add"), this);
   editMenu->addAction(actSwapNums);
+  editMenu->addAction(actCallMech);
 
   auto* viewMenu = menuBar()->addMenu(tr("&View"));
   auto* actFit = new QAction(tr("Fit"), this);
@@ -134,6 +139,7 @@ void MainWindow::setupActions() {
     m_view->fitInView(m_scene->itemsBoundingRect().adjusted(-50,-50,50,50), Qt::KeepAspectRatio);
   });
   viewMenu->addAction(actFit);
+  auto* pluginsMenu = menuBar()->addMenu(tr("&Plugins"));
 
   auto* actZoomIn = new QAction(tr("Scale +"), this);
   actZoomIn->setShortcut(QKeySequence::ZoomIn);
@@ -149,12 +155,6 @@ void MainWindow::setupActions() {
   });
   viewMenu->addAction(actZoomOut);
 
-  m_actColorfulMode = new QAction(tr("Colorful mode"), this);
-  m_actColorfulMode->setCheckable(true);
-  m_actColorfulMode->setChecked(m_welcomeState.value("colorfulMode", false).toBool());
-  viewMenu->addSeparator();
-  viewMenu->addAction(m_actColorfulMode);
-
   m_actDarkMode = new QAction(tr("Dark mode"), this);
   m_actDarkMode->setCheckable(true);
   m_actDarkMode->setChecked(m_welcomeState.value("darkMode", false).toBool());
@@ -165,67 +165,22 @@ void MainWindow::setupActions() {
   m_actFollowSystemTheme->setChecked(m_welcomeState.value("followSystemTheme", false).toBool());
   viewMenu->addAction(m_actFollowSystemTheme);
 
-  m_actArrowColor = new QAction(tr("Arrow color..."), this);
-  m_actBorderColor = new QAction(tr("Block border color..."), this);
-  m_actFontColor = new QAction(tr("Block font color..."), this);
-  viewMenu->addAction(m_actArrowColor);
-  viewMenu->addAction(m_actBorderColor);
-  viewMenu->addAction(m_actFontColor);
-
-  auto ensureDefaultColor = [this](const char* key, const QColor& fallback) {
-    QColor c(m_welcomeState.value(key).toString());
-    if (!c.isValid()) m_welcomeState[key] = fallback.name();
-  };
-  ensureDefaultColor("arrowColor", QColor("#2b6ee6"));
-  ensureDefaultColor("blockBorderColor", QColor("#0f766e"));
-  ensureDefaultColor("blockFontColor", QColor("#991b1b"));
-
   auto applyModes = [this](bool mark) {
-    const bool colorful = m_actColorfulMode->isChecked();
     const bool followSystem = m_actFollowSystemTheme->isChecked();
     const bool dark = m_actDarkMode->isChecked();
-    m_welcomeState["colorfulMode"] = colorful;
     m_welcomeState["followSystemTheme"] = followSystem;
     m_welcomeState["darkMode"] = dark;
     m_welcomeState["resolvedDarkMode"] = effectiveDarkMode();
-
-    m_actArrowColor->setEnabled(colorful);
-    m_actBorderColor->setEnabled(colorful);
-    m_actFontColor->setEnabled(colorful);
     m_actDarkMode->setEnabled(!followSystem);
-
     applyAppPalette(m_welcomeState.value("resolvedDarkMode").toBool());
     m_scene->applyMeta(m_welcomeState);
     if (mark) markDirty(true);
   };
-
-  connect(m_actColorfulMode, &QAction::toggled, this, [applyModes]{ applyModes(true); });
   connect(m_actDarkMode, &QAction::toggled, this, [applyModes]{ applyModes(true); });
   connect(m_actFollowSystemTheme, &QAction::toggled, this, [applyModes]{ applyModes(true); });
   connect(qApp->styleHints(), &QStyleHints::colorSchemeChanged, this, [applyModes](Qt::ColorScheme){
     applyModes(false);
   });
-  connect(m_actArrowColor, &QAction::triggered, this, [this, applyModes]{
-    const QColor cur(m_welcomeState.value("arrowColor").toString());
-    const QColor chosen = QColorDialog::getColor(cur.isValid() ? cur : QColor("#2b6ee6"), this, tr("Arrow color"));
-    if (!chosen.isValid()) return;
-    m_welcomeState["arrowColor"] = chosen.name();
-    applyModes(true);
-  });
-  connect(m_actBorderColor, &QAction::triggered, this, [this, applyModes]{
-    const QColor cur(m_welcomeState.value("blockBorderColor").toString());
-    const QColor chosen = QColorDialog::getColor(cur.isValid() ? cur : QColor("#0f766e"), this, tr("Block border color"));
-    if (!chosen.isValid()) return;
-    m_welcomeState["blockBorderColor"] = chosen.name();
-    applyModes(true);
-  });
-  connect(m_actFontColor, &QAction::triggered, this, [this, applyModes]{
-    const QColor cur(m_welcomeState.value("blockFontColor").toString());
-    const QColor chosen = QColorDialog::getColor(cur.isValid() ? cur : QColor("#991b1b"), this, tr("Block font color"));
-    if (!chosen.isValid()) return;
-    m_welcomeState["blockFontColor"] = chosen.name();
-    applyModes(true);
-  });
   applyModes(false);
 
   connect(actSwapNums, &QAction::triggered, this, [this]{
@@ -327,6 +282,59 @@ void MainWindow::setupActions() {
     if (dlg.exec() != QDialog::Accepted) return;
     exportPdf(scope->currentIndex() == 1, pageNumbers->isChecked());
   });
+
+  connect(actCallMech, &QAction::triggered, this, [this]{
+    if (!m_scene) return;
+    const auto sel = m_scene->selectedItems();
+    if (sel.size() != 1) {
+      QMessageBox::information(this, tr("Call Mechanism"), tr("Select exactly one block to add a call mechanism."));
+      return;
+    }
+    auto* target = qgraphicsitem_cast<BlockItem*>(sel.first());
+    if (!target) {
+      QMessageBox::information(this, tr("Call Mechanism"), tr("Select a block to add a call mechanism."));
+      return;
+    }
+    if (m_scene->hasCallMechanism(target)) {
+      QMessageBox::information(this, tr("Call Mechanism"), tr("Call mechanism already exists for this block."));
+      return;
+    }
+    struct Option { QString display; BlockItem* block = nullptr; };
+    QVector<Option> options;
+    for (QGraphicsItem* it : m_scene->items()) {
+      auto* b = qgraphicsitem_cast<BlockItem*>(it);
+      if (!b) continue;
+      const QString n = b->number();
+      if (n.isEmpty() || n.compare("A0", Qt::CaseInsensitive) == 0) continue;
+      if (b == target) continue;
+      Option opt{QStringLiteral("%1 — %2").arg(n, b->title()), b};
+      options.push_back(opt);
+    }
+    std::sort(options.begin(), options.end(), [](const Option& a, const Option& b){ return a.display.localeAwareCompare(b.display) < 0; });
+    if (options.isEmpty()) {
+      QMessageBox::information(this, tr("Call Mechanism"), tr("No eligible target blocks found."));
+      return;
+    }
+    QStringList displayList;
+    for (const auto& opt : options) displayList << opt.display;
+    bool ok = false;
+    const QString choice = QInputDialog::getItem(this, tr("Call Mechanism"), tr("Choose target block:"), displayList, 0, false, &ok);
+    if (!ok || choice.isEmpty()) return;
+    BlockItem* refBlock = nullptr;
+    for (const auto& opt : options) {
+      if (opt.display == choice) { refBlock = opt.block; break; }
+    }
+    if (!refBlock) return;
+    const QString label = QStringLiteral("%1 %2").arg(refBlock->number(), refBlock->title());
+    if (!m_scene->startCallMechanism(target, refBlock, label)) {
+      QMessageBox::information(this, tr("Call Mechanism"), tr("Call mechanism already exists for this block or selection is invalid."));
+      return;
+    }
+    statusBar()->showMessage(tr("Click bottom frame to place call mechanism arrow. Esc to cancel."), 5000);
+  });
+
+  m_pluginManager = new PluginManager(this, pluginsMenu, this);
+  m_pluginManager->loadPlugins();
 }
 
 static QString currencySymbolForLocale(const QLocale& loc) {
@@ -358,15 +366,15 @@ bool MainWindow::showWelcome() {
   // General tab
   auto* general = new QWidget(dlg);
   auto* genForm = new QFormLayout(general);
-  auto* author = new QLineEdit(general);
-  author->setPlaceholderText(tr("John Doe"));
-  author->setText(m_welcomeState.value("author").toString());
   auto* title = new QLineEdit(general);
   title->setPlaceholderText(tr("Main process"));
   title->setText(m_welcomeState.value("title").toString());
   auto* organization = new QLineEdit(general);
   organization->setPlaceholderText(tr("Example.Org Inc."));
   organization->setText(m_welcomeState.value("organization").toString());
+  auto* author = new QLineEdit(general);
+  author->setPlaceholderText(tr("John Doe"));
+  author->setText(m_welcomeState.value("author").toString());
   auto* initials = new QLineEdit(general);
   initials->setPlaceholderText(tr("JD"));
   initials->setText(m_welcomeState.value("initials").toString());
@@ -378,6 +386,9 @@ bool MainWindow::showWelcome() {
   genForm->addRow(tr("Organization:"), organization);
   genForm->addRow(tr("Author:"), author);
   genForm->addRow(tr("Author's initials:"), initials);
+  setTabOrder(title, organization);
+  setTabOrder(organization, author);
+  setTabOrder(author, initials);
   general->setLayout(genForm);
   tabs->addTab(general, tr("General"));
 
@@ -557,21 +568,13 @@ bool MainWindow::loadDiagramFromPath(const QString& path) {
   if (root.contains("meta")) {
     m_welcomeState = root.value("meta").toMap();
   }
-  if (m_actColorfulMode && m_actDarkMode && m_actFollowSystemTheme) {
-    const QSignalBlocker b1(m_actColorfulMode);
+  if (m_actDarkMode && m_actFollowSystemTheme) {
     const QSignalBlocker b2(m_actDarkMode);
     const QSignalBlocker b3(m_actFollowSystemTheme);
-    m_actColorfulMode->setChecked(m_welcomeState.value("colorfulMode", false).toBool());
     m_actDarkMode->setChecked(m_welcomeState.value("darkMode", false).toBool());
     m_actFollowSystemTheme->setChecked(m_welcomeState.value("followSystemTheme", false).toBool());
     m_actDarkMode->setEnabled(!m_actFollowSystemTheme->isChecked());
   }
-  if (m_actArrowColor && m_actBorderColor && m_actFontColor) {
-    const bool colorful = m_welcomeState.value("colorfulMode", false).toBool();
-    m_actArrowColor->setEnabled(colorful);
-    m_actBorderColor->setEnabled(colorful);
-    m_actFontColor->setEnabled(colorful);
-  }
   m_welcomeState["resolvedDarkMode"] = effectiveDarkMode();
   applyAppPalette(m_welcomeState.value("resolvedDarkMode").toBool());
   m_scene->applyMeta(m_welcomeState);

src/MainWindow.h

@@ -8,12 +8,14 @@ class QGraphicsView;
 class DiagramScene;
 class QDialog;
 class QAction;
+class PluginManager;
 
 class MainWindow final : public QMainWindow {
   Q_OBJECT
 public:
   explicit MainWindow(const QString& startupPath = QString(), QWidget* parent = nullptr);
   bool openDiagramPath(const QString& path);
+  DiagramScene* scene() const { return m_scene; }
 
 protected:
   bool eventFilter(QObject* obj, QEvent* event) override;
@@ -26,12 +28,9 @@ private:
   QString m_currentFile;
   bool m_dirty = false;
   bool m_pinchHandled = false;
-  QAction* m_actColorfulMode = nullptr;
   QAction* m_actFollowSystemTheme = nullptr;
   QAction* m_actDarkMode = nullptr;
-  QAction* m_actArrowColor = nullptr;
-  QAction* m_actBorderColor = nullptr;
-  QAction* m_actFontColor = nullptr;
+  PluginManager* m_pluginManager = nullptr;
 
   void setupUi();
   void setupActions();

src/items/ArrowItem.cpp

@@ -12,6 +12,7 @@
 #include <QLineEdit>
 #include <QDebug>
 #include <QObject>
+#include <QCoreApplication>
 #include "DiagramScene.h"
 #include <algorithm>
 #include <QSet>
@@ -35,6 +36,8 @@ QColor ArrowItem::s_textColor = QColor(10, 10, 10);
 ArrowItem::ArrowItem(QGraphicsItem* parent)
   : QGraphicsPathItem(parent)
 {
+  static int s_nextId = 1;
+  m_internalId = s_nextId++;
   QPen pen(s_lineColor);
   pen.setWidthF(1.4);
   pen.setCapStyle(Qt::RoundCap);
@@ -101,6 +104,18 @@ void ArrowItem::setLabelSource(ArrowItem* src) {
   m_labelSource = src;
 }
 
+void ArrowItem::setCustomColor(const QColor& color) {
+  if (!color.isValid()) return;
+  m_customColor = color;
+  updatePath();
+}
+
+void ArrowItem::clearCustomColor() {
+  if (!m_customColor) return;
+  m_customColor.reset();
+  updatePath();
+}
+
 ArrowItem* ArrowItem::labelSourceRoot() const {
   const ArrowItem* cur = this;
   QSet<const ArrowItem*> visited;
@@ -674,10 +689,13 @@ void ArrowItem::updateLabelItem(const QVector<QPointF>& pts) {
 // Обновляем маршрут ортогонально, добавляя/схлопывая сегменты при необходимости.
 void ArrowItem::updatePath() {
   QPen themedPen = pen();
-  themedPen.setColor(s_lineColor);
+  themedPen.setColor(m_customColor.value_or(s_lineColor));
+  if (m_isCallMechanism) {
+    themedPen.setStyle(Qt::DashLine);
+  }
   setPen(themedPen);
   if (m_labelItem) {
-    m_labelItem->setBrush(s_textColor);
+    m_labelItem->setBrush(m_customColor.value_or(s_textColor));
   }
 
   const QRectF oldSceneRect = mapRectToScene(boundingRect());
@@ -912,7 +930,13 @@ void ArrowItem::mouseReleaseEvent(QGraphicsSceneMouseEvent* e) {
 void ArrowItem::mouseDoubleClickEvent(QGraphicsSceneMouseEvent* e) {
   if (e->button() == Qt::LeftButton && !m_labelLocked) {
     bool ok = false;
-    const QString text = QInputDialog::getText(nullptr, QObject::tr("Arrow label"), QObject::tr("Label:"), QLineEdit::Normal, m_label, &ok);
+    const QString text = QInputDialog::getText(
+      nullptr,
+      QCoreApplication::translate("ArrowItem", "Arrow label"),
+      QCoreApplication::translate("ArrowItem", "Label:"),
+      QLineEdit::Normal,
+      m_label,
+      &ok);
     if (ok) {
       setLabel(text);
       setLabelHidden(false);

src/items/ArrowItem.h

@@ -49,6 +49,7 @@ public:
   qreal topOffset() const { return m_topOffset; }
   qreal bottomOffset() const { return m_bottomOffset; }
   int type() const override { return Type; }
+  int internalId() const { return m_internalId; }
   bool isInterface() const { return m_isInterface; }
   bool isInterfaceStub() const { return m_isInterface && m_interfaceStubOnly; }
   bool isLabelLocked() const { return m_labelLocked; }
@@ -58,6 +59,13 @@ public:
   void resetInterfaceStub();
   void setLabelLocked(bool locked);
   static void setVisualTheme(const QColor& lineColor, const QColor& textColor);
+  void setCustomColor(const QColor& color);
+  void clearCustomColor();
+  std::optional<QColor> customColor() const { return m_customColor; }
+  void setCallMechanism(bool v) { m_isCallMechanism = v; }
+  bool isCallMechanism() const { return m_isCallMechanism; }
+  void setCallRefId(int id) { m_callRefId = id; }
+  int callRefId() const { return m_callRefId; }
 
   void updatePath();
   std::optional<QPointF> hitTest(const QPointF& scenePos, qreal radius) const;
@@ -87,6 +95,10 @@ private:
   ArrowItem* m_labelSource = nullptr;
   static QColor s_lineColor;
   static QColor s_textColor;
+  std::optional<QColor> m_customColor;
+  int m_internalId = -1;
+  bool m_isCallMechanism = false;
+  int m_callRefId = -1;
 
   DragPart m_dragPart = DragPart::None;
   QPointF m_lastDragScenePos;

src/items/BlockItem.cpp

@@ -32,6 +32,9 @@ BlockItem::BlockItem(QString title, QGraphicsItem* parent, int id)
     m_rect(0, 0, 200, 100),
     m_id(id)
 {
+  if (m_title.isEmpty()) {
+    m_title = tr("Function");
+  }
   setFlags(ItemIsMovable | ItemIsSelectable | ItemSendsGeometryChanges);
 }
 
@@ -45,11 +48,15 @@ void BlockItem::paint(QPainter* p, const QStyleOptionGraphicsItem*, QWidget*) {
 
   // фон
   p->setPen(Qt::NoPen);
-  p->setBrush(isSelected() ? s_selectedBackgroundColor : s_backgroundColor);
+  const QColor borderColor = m_customColor.value_or(s_borderColor);
+  const QColor fontColor = m_customColor.value_or(s_fontColor);
+  const QColor foregroundColor = m_customColor.value_or(s_foregroundColor);
+  const QColor selectedBg = m_customColor ? m_customColor->lighter(160) : s_selectedBackgroundColor;
+  p->setBrush(isSelected() ? selectedBg : s_backgroundColor);
   p->drawRoundedRect(m_rect, 6, 6);
 
   // рамка
-  QPen pen(s_borderColor);
+  QPen pen(borderColor);
   pen.setWidthF(1.5);
   p->setPen(pen);
   p->setBrush(Qt::NoBrush);
@@ -65,22 +72,22 @@ void BlockItem::paint(QPainter* p, const QStyleOptionGraphicsItem*, QWidget*) {
     fold.closeSubpath();
     p->setBrush(s_backgroundColor.darker(108));
     p->drawPath(fold);
-    p->setPen(QPen(s_borderColor.lighter(130), 1.0));
+    p->setPen(QPen(borderColor.lighter(130), 1.0));
     p->drawLine(m_rect.topLeft() + QPointF(ear, 0), m_rect.topLeft() + QPointF(0, ear));
   }
 
   // заголовок
-  p->setPen(s_fontColor);
+  p->setPen(fontColor);
   p->drawText(m_rect.adjusted(10, 8, -10, -8), Qt::AlignLeft | Qt::AlignTop, m_title);
   if (!m_number.isEmpty()) {
     QFont f = p->font();
     f.setBold(true);
     p->setFont(f);
-    p->setPen(s_foregroundColor);
+    p->setPen(foregroundColor);
     p->drawText(m_rect.adjusted(8, 4, -8, -8), Qt::AlignRight | Qt::AlignBottom, m_number);
   }
   if (m_price.has_value()) {
-    p->setPen(s_foregroundColor);
+    p->setPen(foregroundColor);
     p->drawText(m_rect.adjusted(8, 4, -8, -8), Qt::AlignLeft | Qt::AlignBottom, formattedPrice());
   }
 }
@@ -89,12 +96,14 @@ void BlockItem::setTitle(const QString& t) {
   if (t == m_title) return;
   m_title = t;
   update();
+  emit titleChanged(m_title);
 }
 
 void BlockItem::setNumber(const QString& n) {
   if (n == m_number) return;
   m_number = n;
   update();
+  emit numberChanged(m_number);
 }
 
 void BlockItem::setPrice(std::optional<qreal> price) {
@@ -103,6 +112,18 @@ void BlockItem::setPrice(std::optional<qreal> price) {
   update();
 }
 
+void BlockItem::setCustomColor(const QColor& color) {
+  if (!color.isValid()) return;
+  m_customColor = color;
+  update();
+}
+
+void BlockItem::clearCustomColor() {
+  if (!m_customColor) return;
+  m_customColor.reset();
+  update();
+}
+
 void BlockItem::setCurrencyFormat(const QString& symbol, const QString& placement) {
   QString effectiveSymbol = symbol;
   if (effectiveSymbol.isEmpty()) {

src/items/BlockItem.h

@@ -12,7 +12,7 @@ public:
   enum class Port { Input, Control, Output, Mechanism };
   enum { Type = UserType + 1 };
 
-  explicit BlockItem(QString title = "Function", QGraphicsItem* parent = nullptr, int id = -1);
+  explicit BlockItem(QString title = QString(), QGraphicsItem* parent = nullptr, int id = -1);
 
   QRectF boundingRect() const override;
   void paint(QPainter* p, const QStyleOptionGraphicsItem*, QWidget*) override;
@@ -43,9 +43,14 @@ public:
                              const QColor& border,
                              const QColor& font,
                              const QColor& selectedBackground);
+  void setCustomColor(const QColor& color);
+  void clearCustomColor();
+  std::optional<QColor> customColor() const { return m_customColor; }
 
 signals:
   void geometryChanged();
+  void titleChanged(const QString& title);
+  void numberChanged(const QString& number);
 
 protected:
   QVariant itemChange(GraphicsItemChange change, const QVariant& value) override;
@@ -62,6 +67,7 @@ private:
   bool m_hasDecomposition = false;
   QSet<ArrowItem*> m_arrows;
   std::optional<qreal> m_price;
+  std::optional<QColor> m_customColor;
 
   static QString s_currencySymbol;
   static QString s_currencyPlacement;

src/items/DiagramScene.cpp

@@ -37,9 +37,10 @@ DiagramScene::DiagramScene(QObject* parent)
 }
 
 BlockItem* DiagramScene::createBlockAt(const QPointF& scenePos) {
-  auto* b = new BlockItem("Function", nullptr, m_nextBlockId++);
+  auto* b = new BlockItem(QString(), nullptr, m_nextBlockId++);
   addItem(b);
   b->setNumber(assignNumber(b));
+  connectBlockSignals(b);
   const QRectF r = m_contentRect.isNull() ? sceneRect() : m_contentRect;
   const QPointF desired = scenePos - QPointF(100, 50); // центрируем
   const QRectF br = b->boundingRect().translated(desired);
@@ -59,6 +60,7 @@ BlockItem* DiagramScene::createBlockWithId(const QPointF& scenePos, int id, cons
   addItem(b);
   b->setPos(scenePos);
   if (b->number().isEmpty()) b->setNumber(assignNumber(b));
+  connectBlockSignals(b);
   return b;
 }
 
@@ -155,9 +157,9 @@ void DiagramScene::updateMeta(const QVariantMap& patch) {
 }
 
 QString DiagramScene::currentNodeLabel() const {
-  if (m_currentBlockId < 0) return QStringLiteral("TOP");
+  if (m_currentBlockId < 0) return tr("TOP");
   if (!m_currentPrefix.isEmpty()) return m_currentPrefix;
-  return QStringLiteral("A0");
+  return tr("A0");
 }
 
 QString DiagramScene::currentDiagramTitle() const {
@@ -594,6 +596,9 @@ DiagramScene::Snapshot DiagramScene::captureSnapshot() const {
       blk.hasDecomp = hasDecomp;
       blk.number = b->number();
       blk.price = b->price();
+      if (auto col = b->customColor()) {
+        blk.color = col->name();
+      }
       s.blocks.push_back(blk);
     }
   }
@@ -621,9 +626,14 @@ DiagramScene::Snapshot DiagramScene::captureSnapshot() const {
       ar.isInterface = a->isInterface();
       ar.isInterfaceStub = a->isInterfaceStub();
       ar.labelLocked = a->isLabelLocked();
+      ar.callMechanism = a->isCallMechanism();
+      ar.callRefId = a->callRefId();
       if (a->interfaceEdge()) {
         ar.interfaceEdge = encodeEp(*a->interfaceEdge());
       }
+      if (auto col = a->customColor()) {
+        ar.color = col->name();
+      }
       s.arrows.push_back(std::move(ar));
     }
   }
@@ -655,6 +665,10 @@ void DiagramScene::restoreSnapshot(const Snapshot& snap, bool resetHistoryState)
     if (b.price.has_value()) {
       blk->setPrice(b.price);
     }
+    if (b.color.has_value()) {
+      const QColor col(*b.color);
+      if (col.isValid()) blk->setCustomColor(col);
+    }
     blockMap.insert(b.id, blk);
     m_nextBlockId = std::max(m_nextBlockId, b.id + 1);
   }
@@ -710,10 +724,17 @@ for (const auto& j : snap.junctions) {
     ar->setLabelHidden(a.labelHidden);
     ar->setLabelInherited(a.labelInherited);
     ar->setLabelLocked(a.labelLocked);
+    ar->setCallMechanism(a.callMechanism);
+    ar->setCallRefId(a.callRefId);
+    if (a.color.has_value()) {
+      const QColor col(*a.color);
+      if (col.isValid()) ar->setCustomColor(col);
+    }
     ar->finalize();
   }
 
   m_restoringSnapshot = false;
+  updateCallMechanismLabels();
   if (resetHistoryState) {
     resetHistory(captureSnapshot());
   }
@@ -742,9 +763,59 @@ void DiagramScene::scheduleSnapshot() {
   QTimer::singleShot(0, this, [this]{
     m_snapshotScheduled = false;
     pushSnapshot();
+    updateCallMechanismLabels();
   });
 }
 
+void DiagramScene::connectBlockSignals(BlockItem* b) {
+  if (!b) return;
+  connect(b, &BlockItem::titleChanged, this, [this]{ updateCallMechanismLabels(); });
+  connect(b, &BlockItem::numberChanged, this, [this]{ updateCallMechanismLabels(); });
+}
+
+void DiagramScene::updateCallMechanismLabels() {
+  QHash<int, BlockItem*> blockById;
+  for (QGraphicsItem* it : items()) {
+    if (auto* b = qgraphicsitem_cast<BlockItem*>(it)) {
+      blockById.insert(b->id(), b);
+    }
+  }
+  for (QGraphicsItem* it : items()) {
+    auto* a = qgraphicsitem_cast<ArrowItem*>(it);
+    if (!a || !a->isCallMechanism()) continue;
+    BlockItem* ref = blockById.value(a->callRefId(), nullptr);
+    if (!ref) continue;
+    const QString num = ref->number();
+    const QString title = ref->title();
+    const QString label = num.isEmpty() ? title : QStringLiteral("%1 %2").arg(num, title);
+    a->setLabel(label);
+    a->setLabelHidden(false);
+  }
+}
+
+void DiagramScene::purgeBrokenCallMechanisms() {
+  QSet<BlockItem*> blocks;
+  for (QGraphicsItem* it : items()) {
+    if (auto* b = qgraphicsitem_cast<BlockItem*>(it)) blocks.insert(b);
+  }
+  QVector<ArrowItem*> toRemove;
+  for (QGraphicsItem* it : items()) {
+    if (auto* a = qgraphicsitem_cast<ArrowItem*>(it)) {
+      if (!a->isCallMechanism()) continue;
+      auto from = a->from();
+      auto to = a->to();
+      bool ok = true;
+      if (from.block && !blocks.contains(from.block)) ok = false;
+      if (to.block && !blocks.contains(to.block)) ok = false;
+      if (!ok) toRemove.push_back(a);
+    }
+  }
+  for (ArrowItem* a : toRemove) {
+    removeItem(a);
+    delete a;
+  }
+}
+
 void DiagramScene::undo() {
   if (m_historyIndex <= 0) return;
   m_historyIndex -= 1;
@@ -1022,6 +1093,7 @@ void DiagramScene::mouseReleaseEvent(QGraphicsSceneMouseEvent* e) {
     maybeSnapshotMovedItems();
     m_itemDragActive = false;
   }
+  purgeBrokenCallMechanisms();
   QGraphicsScene::mouseReleaseEvent(e);
 }
 
@@ -1056,6 +1128,47 @@ void DiagramScene::keyPressEvent(QKeyEvent* e) {
   QGraphicsScene::keyPressEvent(e);
 }
 
+bool DiagramScene::hasCallMechanism(const BlockItem* target) const {
+  if (!target) return false;
+  const auto all = items();
+  for (QGraphicsItem* it : all) {
+    if (auto* a = qgraphicsitem_cast<ArrowItem*>(it)) {
+      if (!a->isCallMechanism()) continue;
+      const auto from = a->from();
+      if (from.block && from.block == target) {
+        return true;
+      }
+    }
+  }
+  return false;
+}
+
+bool DiagramScene::startCallMechanism(BlockItem* origin, BlockItem* refBlock, const QString& label) {
+  if (!origin || !refBlock) return false;
+  if (origin == refBlock) return false;
+  if (hasCallMechanism(origin)) return false;
+  cancelCurrentDrag();
+  auto* a = new ArrowItem();
+  addItem(a);
+  ArrowItem::Endpoint from;
+  from.scenePos = origin->portScenePos(BlockItem::Port::Mechanism) + QPointF(0, 40);
+  from.port = BlockItem::Port::Mechanism;
+  ArrowItem::Endpoint to;
+  to.block = origin;
+  to.port = BlockItem::Port::Mechanism;
+  a->setFrom(from);
+  a->setTo(to);
+  a->setCallMechanism(true);
+  a->setCallRefId(refBlock->id());
+  a->setLabel(label);
+  a->setLabelHidden(false);
+  a->setLabelLocked(true);
+  a->setLabelInherited(false);
+  a->finalize();
+  pushSnapshot();
+  return true;
+}
+
 void DiagramScene::cancelCurrentDrag() {
   if (m_dragArrow) {
     if (m_dragArrow->isInterface()) {
@@ -1119,7 +1232,10 @@ void DiagramScene::deleteSelection() {
     delete it;
   }
 
-  if (!toDelete.isEmpty()) pushSnapshot();
+  if (!toDelete.isEmpty()) {
+    purgeBrokenCallMechanisms();
+    pushSnapshot();
+  }
 }
 
 void DiagramScene::requestSnapshot() {
@@ -1278,6 +1394,7 @@ QVariantMap DiagramScene::exportToVariant() {
       o["hasDecomp"] = b.hasDecomp;
       o["number"] = b.number;
       if (b.price.has_value()) o["price"] = *b.price;
+      if (b.color.has_value()) o["color"] = *b.color;
       blocks.append(o);
     }
     root["blocks"] = blocks;
@@ -1307,6 +1424,9 @@ QVariantMap DiagramScene::exportToVariant() {
       o["isInterfaceStub"] = a.isInterfaceStub;
       o["labelLocked"] = a.labelLocked;
       o["interfaceEdge"] = endpointToJson(a.interfaceEdge);
+      o["callMechanism"] = a.callMechanism;
+      o["callRefId"] = a.callRefId;
+      if (a.color.has_value()) o["color"] = *a.color;
       arrows.append(o);
     }
     root["arrows"] = arrows;
@@ -1340,7 +1460,7 @@ bool DiagramScene::importFromVariant(const QVariantMap& map) {
     Snapshot snap;
     for (const auto& vb : root.value("blocks").toArray()) {
       const auto o = vb.toObject();
-      const auto posArr = o.value("pos").toArray();
+    const auto posArr = o.value("pos").toArray();
       if (posArr.size() != 2) continue;
       DiagramScene::Snapshot::Block blk;
       blk.id = o.value("id").toInt();
@@ -1351,6 +1471,8 @@ bool DiagramScene::importFromVariant(const QVariantMap& map) {
       if (o.contains("price") && !o.value("price").isNull()) {
         blk.price = o.value("price").toDouble();
       }
+      const QString blkColor = o.value("color").toString();
+      if (!blkColor.isEmpty()) blk.color = blkColor;
       snap.blocks.push_back(blk);
     }
     for (const auto& vj : root.value("junctions").toArray()) {
@@ -1376,6 +1498,10 @@ bool DiagramScene::importFromVariant(const QVariantMap& map) {
       ar.isInterfaceStub = o.value("isInterfaceStub").toBool(false);
       ar.labelLocked = o.value("labelLocked").toBool(false);
       ar.interfaceEdge = endpointFromJson(o.value("interfaceEdge").toObject());
+      ar.callMechanism = o.value("callMechanism").toBool(false);
+      ar.callRefId = o.value("callRefId").toInt(-1);
+      const QString arrowColor = o.value("color").toString();
+      if (!arrowColor.isEmpty()) ar.color = arrowColor;
       snap.arrows.push_back(ar);
     }
     return snap;

src/items/DiagramScene.h

@@ -23,12 +23,16 @@ public:
   QRectF contentRect() const { return m_contentRect; }
   QString currentNodeLabel() const;
   QString currentDiagramTitle() const;
+  int currentBlockId() const { return m_currentBlockId; }
   bool goDownIntoSelected();
   bool goDownIntoBlock(BlockItem* b);
   bool goUp();
   void propagateLabelFrom(ArrowItem* root);
   QVariantMap exportToVariant();
   bool importFromVariant(const QVariantMap& map);
+  bool startCallMechanism(BlockItem* origin, BlockItem* refBlock, const QString& label);
+  bool hasCallMechanism(const BlockItem* origin) const;
+  void updateCallMechanismLabels();
 signals:
   void changed();
   void metaChanged(const QVariantMap& meta);
@@ -48,7 +52,7 @@ private:
       std::optional<QPointF> localPos;
       std::optional<QPointF> scenePos;
     };
-    struct Block { int id; QString title; QPointF pos; bool hasDecomp = false; QString number; std::optional<qreal> price; };
+    struct Block { int id; QString title; QPointF pos; bool hasDecomp = false; QString number; std::optional<qreal> price; std::optional<QString> color; };
     struct Junction { int id; QPointF pos; };
     struct Arrow {
       Endpoint from;
@@ -64,6 +68,9 @@ private:
       bool isInterfaceStub = false;
       bool labelLocked = false;
       Endpoint interfaceEdge;
+      std::optional<QString> color;
+      bool callMechanism = false;
+      int callRefId = -1;
     };
     QVector<Block> blocks;
     QVector<Junction> junctions;
@@ -113,6 +120,8 @@ private:
   QString currentPathKey() const;
   QString childKeyFor(int blockId) const;
   QString assignNumber(BlockItem* b);
+  void connectBlockSignals(BlockItem* b);
+  void purgeBrokenCallMechanisms();
 
   enum class Edge { None, Left, Right, Top, Bottom };
   Edge hitTestEdge(const QPointF& scenePos, QPointF* outScenePoint = nullptr) const;

src/plugins/Manual.md

@@ -0,0 +1,79 @@
+# Plugin Development Manual
+
+This application loads runtime plugins as plain shared libraries located in `plugins/`. Plugins are isolated from internal types and talk to the host via the C ABI defined in `PluginApi.h`.
+
+## Plugin API
+
+- Header: `src/plugins/PluginApi.h`
+- Entry point: a single exported C function
+  ```c
+  extern "C" bool idef0_plugin_init_v1(Idef0Host* host);
+  ```
+- You **must not** include or rely on any other app headers.
+
+`Idef0Host` exposes function pointers:
+
+| Function | Purpose |
+| --- | --- |
+| `size_t selected_items(void* opaque, Idef0SelectedItem* out, size_t max)` | Returns count of selected items, fills kind (`IDEF0_ITEM_BLOCK` / `IDEF0_ITEM_ARROW`) and `id`. |
+| `bool set_item_color(void* opaque, int kind, int id, const char* color_hex)` | Set per-item color override as `#rrggbb`. |
+| `bool clear_item_color(void* opaque, int kind, int id)` | Clear color override. |
+| `void add_menu_action(void* opaque, const char* text, Idef0ActionCallback cb, void* user_data)` | Add an action under the Plugins menu; `cb` gets `(user_data, host)`. |
+| `const char* plugin_dir(void* opaque)` | Absolute directory of this plugin library (use to load plugin-local resources/translations). |
+
+## Minimal Example (C++)
+
+```cpp
+#include "plugins/PluginApi.h"
+#include <QObject>      // for tr(), optional
+#include <QColorDialog> // optional UI
+
+static void onSetRed(void*, Idef0Host* host) {
+  Idef0SelectedItem items[32];
+  size_t n = host->selected_items(host->opaque, items, 32);
+  for (size_t i = 0; i < n; ++i) {
+    host->set_item_color(host->opaque, items[i].kind, items[i].id, "#ff0000");
+  }
+}
+
+extern "C" bool idef0_plugin_init_v1(Idef0Host* host) {
+  if (!host || !host->add_menu_action) return false;
+  host->add_menu_action(host->opaque, "Set red", &onSetRed, nullptr);
+  return true;
+}
+```
+
+## Build with CMake
+
+```cmake
+cmake_minimum_required(VERSION 3.21)
+project(myplugin LANGUAGES CXX)
+find_package(Qt6 REQUIRED COMPONENTS Widgets) # only if you use Qt UI
+
+add_library(myplugin MODULE myplugin.cpp)
+target_include_directories(myplugin PRIVATE /path/to/app/src) # for plugins/PluginApi.h
+target_link_libraries(myplugin PRIVATE Qt6::Widgets)          # optional
+set_target_properties(myplugin PROPERTIES
+  LIBRARY_OUTPUT_DIRECTORY "${CMAKE_BINARY_DIR}/plugins"
+  RUNTIME_OUTPUT_DIRECTORY "${CMAKE_BINARY_DIR}/plugins"
+  INSTALL_RPATH "\$ORIGIN/../lib"
+)
+install(TARGETS myplugin LIBRARY DESTINATION plugins RUNTIME DESTINATION plugins)
+```
+
+If you don’t need Qt widgets, omit `find_package(Qt6...)` and link against nothing extra.
+
+## Deployment
+
+- Place the built library next to the app in `plugins/`:
+  - Linux: `plugins/libmyplugin.so`
+  - Windows: `plugins/myplugin.dll`
+  - macOS: `plugins/libmyplugin.dylib`
+- Ensure it is built against the same `PluginApi.h` version as the app.
+
+## Best Practices
+
+- Keep plugin state in your own globals; the host provides only opaque pointers.
+- Validate inputs (e.g., color strings) and return early on null host functions.
+- Use `selected_items` first, then act via `set_item_color`/`clear_item_color`.
+- Add menu actions via `add_menu_action` for user-visible triggers. The host calls your callbacks on activation.

src/plugins/PluginApi.h

@@ -0,0 +1,37 @@
+#pragma once
+
+#include <cstddef>
+
+extern "C" {
+
+enum Idef0ItemKind {
+  IDEF0_ITEM_BLOCK = 1,
+  IDEF0_ITEM_ARROW = 2
+};
+
+struct Idef0SelectedItem {
+  int kind; // Idef0ItemKind
+  int id;
+};
+
+struct Idef0Host;
+typedef void (*Idef0ActionCallback)(void* user_data, Idef0Host* host);
+
+struct Idef0Host {
+  void* opaque; // host-specific pointer
+  // Fills up to max entries, returns actual count.
+  size_t (*selected_items)(void* opaque, Idef0SelectedItem* out, size_t max);
+  // Set hex color (#rrggbb) for item id/kind. Returns true on success.
+  bool (*set_item_color)(void* opaque, int kind, int id, const char* color_hex);
+  // Clear override color.
+  bool (*clear_item_color)(void* opaque, int kind, int id);
+  // Add menu action under Plugins; callback invoked on trigger.
+  void (*add_menu_action)(void* opaque, const char* text, Idef0ActionCallback cb, void* user_data);
+  // Absolute directory where this plugin library resides.
+  const char* (*plugin_dir)(void* opaque);
+};
+
+// Plugin entry point must be exported with this name.
+typedef bool (*Idef0PluginInit)(Idef0Host* host);
+
+} // extern "C"

src/plugins/PluginManager.cpp

@@ -0,0 +1,175 @@
+#include "plugins/PluginManager.h"
+
+#include <QCoreApplication>
+#include <QDir>
+#include <QMenu>
+#include <QDebug>
+#include <QFileInfo>
+#include <QColor>
+
+#include "MainWindow.h"
+#include "items/DiagramScene.h"
+#include "items/BlockItem.h"
+#include "items/ArrowItem.h"
+
+PluginManager::PluginManager(MainWindow* window, QMenu* pluginsMenu, QObject* parent)
+  : QObject(parent),
+  m_window(window),
+    m_pluginsMenu(pluginsMenu)
+{
+}
+
+QMenu* PluginManager::pluginsMenu() const {
+  return m_pluginsMenu;
+}
+
+DiagramScene* PluginManager::currentScene() const {
+  return m_window ? m_window->scene() : nullptr;
+}
+
+QWidget* PluginManager::window() const {
+  return m_window;
+}
+
+QStringList PluginManager::pluginSearchPaths() const {
+  QStringList paths;
+  const QString appDir = QCoreApplication::applicationDirPath();
+  paths << (appDir + "/plugins");
+  paths << (appDir + "/../plugins");
+  return paths;
+}
+
+void PluginManager::loadPlugins() {
+  const QStringList roots = pluginSearchPaths();
+  qInfo() << "PluginManager scanning paths:" << roots;
+  QStringList queue = roots;
+  while (!queue.isEmpty()) {
+    const QString dirPath = queue.takeFirst();
+    QDir dir(dirPath);
+    if (!dir.exists()) continue;
+    // Enqueue subdirectories for recursive scan (one level deep is enough here).
+    const auto subdirs = dir.entryInfoList(QDir::Dirs | QDir::NoDotAndDotDot);
+    for (const QFileInfo& di : subdirs) {
+      queue << di.absoluteFilePath();
+    }
+    // Load plugins from this directory.
+    const auto entries = dir.entryInfoList(QDir::Files);
+    for (const QFileInfo& fi : entries) {
+      if (!QLibrary::isLibrary(fi.absoluteFilePath())) continue;
+      auto lib = std::make_unique<QLibrary>(fi.absoluteFilePath());
+      if (!lib->load()) {
+        qWarning() << "Plugin load failed:" << fi.absoluteFilePath() << lib->errorString();
+        continue;
+      }
+      auto init = reinterpret_cast<Idef0PluginInit>(lib->resolve("idef0_plugin_init_v1"));
+      if (!init) {
+        qWarning() << "Plugin missing entrypoint idef0_plugin_init_v1:" << fi.absoluteFilePath();
+        continue;
+      }
+      auto ctx = makeContext(fi.absoluteFilePath());
+      if (!ctx) continue;
+      if (!init(&ctx->host)) {
+        qWarning() << "Plugin init returned false:" << fi.absoluteFilePath();
+        continue;
+      }
+      qInfo() << "Plugin loaded:" << fi.absoluteFilePath();
+      m_plugins.emplace_back(std::move(lib), std::move(ctx));
+    }
+  }
+}
+
+std::unique_ptr<PluginManager::HostContext> PluginManager::makeContext(const QString& pluginPath) {
+  auto ctx = std::make_unique<HostContext>();
+  ctx->manager = this;
+  ctx->pluginPath = pluginPath;
+  ctx->pluginDirUtf8 = QFileInfo(pluginPath).absolutePath().toUtf8();
+  ctx->host.opaque = ctx.get();
+  ctx->host.selected_items = &PluginManager::apiSelectedItems;
+  ctx->host.set_item_color = &PluginManager::apiSetItemColor;
+  ctx->host.clear_item_color = &PluginManager::apiClearItemColor;
+  ctx->host.add_menu_action = &PluginManager::apiAddMenuAction;
+  ctx->host.plugin_dir = &PluginManager::apiPluginDir;
+  return ctx;
+}
+
+void PluginManager::addAction(const QString& text, Idef0ActionCallback cb, void* userData, HostContext* ctx) {
+  if (!m_pluginsMenu || !cb || !ctx) return;
+  QAction* act = m_pluginsMenu->addAction(text);
+  connect(act, &QAction::triggered, this, [cb, userData, ctx]{
+    cb(userData, &ctx->host);
+  });
+}
+
+size_t PluginManager::apiSelectedItems(void* opaque, Idef0SelectedItem* out, size_t max) {
+  auto* ctx = static_cast<HostContext*>(opaque);
+  if (!ctx || !ctx->manager || !ctx->manager->m_window || !out || max == 0) return 0;
+  DiagramScene* scene = ctx->manager->currentScene();
+  if (!scene) return 0;
+  const auto sel = scene->selectedItems();
+  const size_t selCount = static_cast<size_t>(sel.size());
+  const size_t count = std::min(selCount, max);
+  for (size_t i = 0; i < count; ++i) {
+    Idef0SelectedItem item{0, -1};
+    if (auto* b = qgraphicsitem_cast<BlockItem*>(sel[int(i)])) {
+      item.kind = IDEF0_ITEM_BLOCK;
+      item.id = b->id();
+    } else if (auto* a = qgraphicsitem_cast<ArrowItem*>(sel[int(i)])) {
+      item.kind = IDEF0_ITEM_ARROW;
+      item.id = a->internalId();
+    }
+    out[i] = item;
+  }
+  return count;
+}
+
+static bool applyColorToScene(DiagramScene* scene, int kind, int id, const QColor& col, bool clear) {
+  if (!scene) return false;
+  bool changed = false;
+  const auto items = scene->items();
+  for (QGraphicsItem* it : items) {
+    if (kind == IDEF0_ITEM_BLOCK) {
+      if (auto* b = qgraphicsitem_cast<BlockItem*>(it)) {
+        if (b->id() == id) {
+          clear ? b->clearCustomColor() : b->setCustomColor(col);
+          changed = true;
+        }
+      }
+    } else if (kind == IDEF0_ITEM_ARROW) {
+      if (auto* a = qgraphicsitem_cast<ArrowItem*>(it)) {
+        if (a->internalId() == id) {
+          clear ? a->clearCustomColor() : a->setCustomColor(col);
+          a->updatePath();
+          changed = true;
+        }
+      }
+    }
+  }
+  if (changed) scene->requestSnapshot();
+  return changed;
+}
+
+bool PluginManager::apiSetItemColor(void* opaque, int kind, int id, const char* color_hex) {
+  auto* ctx = static_cast<HostContext*>(opaque);
+  if (!ctx || !ctx->manager || !ctx->manager->m_window || !color_hex) return false;
+  QColor c(color_hex);
+  if (!c.isValid()) return false;
+  return applyColorToScene(ctx->manager->currentScene(), kind, id, c, false);
+}
+
+bool PluginManager::apiClearItemColor(void* opaque, int kind, int id) {
+  auto* ctx = static_cast<HostContext*>(opaque);
+  if (!ctx || !ctx->manager || !ctx->manager->m_window) return false;
+  return applyColorToScene(ctx->manager->currentScene(), kind, id, QColor(), true);
+}
+
+void PluginManager::apiAddMenuAction(void* opaque, const char* text, Idef0ActionCallback cb, void* user_data) {
+  auto* ctx = static_cast<HostContext*>(opaque);
+  if (!ctx || !ctx->manager || !text || !cb) return;
+  ctx->manager->addAction(QString::fromUtf8(text), cb, user_data, ctx);
+}
+
+const char* PluginManager::apiPluginDir(void* opaque) {
+  auto* ctx = static_cast<HostContext*>(opaque);
+  if (!ctx) return nullptr;
+  return ctx->pluginDirUtf8.constData();
+}

src/plugins/PluginManager.h

@@ -0,0 +1,55 @@
+#pragma once
+
+#include <QObject>
+#include <QLibrary>
+#include <memory>
+#include <vector>
+
+#include "plugins/PluginApi.h"
+
+class QMenu;
+class MainWindow;
+class DiagramScene;
+
+class PluginManager final : public QObject {
+  Q_OBJECT
+public:
+  explicit PluginManager(MainWindow* window, QMenu* pluginsMenu, QObject* parent = nullptr);
+  void loadPlugins();
+
+  QMenu* pluginsMenu() const;
+  DiagramScene* currentScene() const;
+  QWidget* window() const;
+
+private:
+  struct HostContext {
+    PluginManager* manager = nullptr;
+    QString pluginPath;
+    QByteArray pluginDirUtf8;
+    Idef0Host host;
+  };
+  struct LoadedPlugin {
+    std::unique_ptr<QLibrary> lib;
+    std::unique_ptr<HostContext> ctx;
+    LoadedPlugin() = default;
+    LoadedPlugin(std::unique_ptr<QLibrary>&& l, std::unique_ptr<HostContext>&& c)
+      : lib(std::move(l)), ctx(std::move(c)) {}
+    LoadedPlugin(LoadedPlugin&&) noexcept = default;
+    LoadedPlugin& operator=(LoadedPlugin&&) noexcept = default;
+    LoadedPlugin(const LoadedPlugin&) = delete;
+    LoadedPlugin& operator=(const LoadedPlugin&) = delete;
+  };
+
+  QStringList pluginSearchPaths() const;
+  std::unique_ptr<HostContext> makeContext(const QString& pluginPath);
+  void addAction(const QString& text, Idef0ActionCallback cb, void* userData, HostContext* ctx);
+  static size_t apiSelectedItems(void* opaque, Idef0SelectedItem* out, size_t max);
+  static bool apiSetItemColor(void* opaque, int kind, int id, const char* color_hex);
+  static bool apiClearItemColor(void* opaque, int kind, int id);
+  static void apiAddMenuAction(void* opaque, const char* text, Idef0ActionCallback cb, void* user_data);
+  static const char* apiPluginDir(void* opaque);
+
+  MainWindow* m_window = nullptr;
+  QMenu* m_pluginsMenu = nullptr;
+  std::vector<LoadedPlugin> m_plugins;
+};

src/plugins/color/ColorsPlugin.cpp

@@ -0,0 +1,92 @@
+#include "plugins/color/ColorsPlugin.h"
+
+#include <QColorDialog>
+#include <QObject>
+#include <QTranslator>
+#include <QLocale>
+#include <QCoreApplication>
+#include <QDebug>
+
+static void ensureTranslator(Idef0Host* host) {
+  static bool loaded = false;
+  static QTranslator* translator = nullptr;
+  if (loaded || !host || !host->plugin_dir) return;
+  const char* dirC = host->plugin_dir(host->opaque);
+  if (!dirC) return;
+  const QString dir = QString::fromUtf8(dirC);
+  const QString baseLocale = QLocale().name().replace('-', '_');
+  const QString shortLocale = baseLocale.section('_', 0, 0);
+
+  QStringList candidates;
+  auto addCandidate = [&](const QString& c) {
+    if (!c.isEmpty() && !c.contains("C")) candidates << c;
+  };
+  addCandidate(baseLocale);
+  addCandidate(shortLocale);
+  const QString sysName = QLocale::system().name().replace('-', '_');
+  addCandidate(sysName);
+  addCandidate(sysName.section('_', 0, 0));
+  for (const QString& lang : QLocale::system().uiLanguages()) {
+    const QString norm = QString(lang).replace('-', '_');
+    addCandidate(norm);
+    addCandidate(norm.section('_', 0, 0));
+  }
+  const QString envLang = QString::fromLocal8Bit(qgetenv("LANG")).section('.', 0, 0).replace('-', '_');
+  addCandidate(envLang);
+  addCandidate(envLang.section('_', 0, 0));
+
+  candidates.removeDuplicates();
+  if (candidates.isEmpty()) candidates << QStringLiteral("en");
+
+  translator = new QTranslator(qApp);
+  qInfo() << "[colors plugin] translator search in" << dir << "candidates" << candidates;
+  for (const QString& loc : candidates) {
+    if (loc.isEmpty()) continue;
+    const QString baseName = QStringLiteral("colors_%1").arg(loc);
+    if (translator->load(baseName, dir + "/translations")) {
+      qApp->installTranslator(translator);
+      qInfo() << "[colors plugin] translator loaded" << baseName;
+      loaded = true;
+      break;
+    }
+  }
+  if (!loaded) {
+    qWarning() << "[colors plugin] translator not found, falling back to default language";
+    delete translator;
+    translator = nullptr;
+  }
+}
+
+static void onSetColor(void*, Idef0Host* host) {
+  if (!host || !host->selected_items || !host->set_item_color) return;
+  ensureTranslator(host);
+  Idef0SelectedItem items[64];
+  const size_t count = host->selected_items(host->opaque, items, 64);
+  if (count == 0) return;
+  QColor initial("#2b6ee6");
+  const QColor chosen = QColorDialog::getColor(initial, nullptr, QObject::tr("Select item color"));
+  if (!chosen.isValid()) return;
+  const QByteArray hex = chosen.name(QColor::HexRgb).toUtf8();
+  for (size_t i = 0; i < count; ++i) {
+    host->set_item_color(host->opaque, items[i].kind, items[i].id, hex.constData());
+  }
+}
+
+static void onClearColor(void*, Idef0Host* host) {
+  if (!host || !host->selected_items || !host->clear_item_color) return;
+  ensureTranslator(host);
+  Idef0SelectedItem items[64];
+  const size_t count = host->selected_items(host->opaque, items, 64);
+  for (size_t i = 0; i < count; ++i) {
+    host->clear_item_color(host->opaque, items[i].kind, items[i].id);
+  }
+}
+
+extern "C" bool idef0_plugin_init_v1(Idef0Host* host) {
+  if (!host || !host->add_menu_action) return false;
+  ensureTranslator(host);
+  qInfo() << "[colors plugin] init, plugin dir:" << (host->plugin_dir ? host->plugin_dir(host->opaque) : "(none)");
+  host->add_menu_action(host->opaque, QObject::tr("Set item color…").toUtf8().constData(), &onSetColor, nullptr);
+  host->add_menu_action(host->opaque, QObject::tr("Clear item colors").toUtf8().constData(), &onClearColor, nullptr);
+  return true;
+}

src/plugins/color/ColorsPlugin.h

@@ -0,0 +1,2 @@
+#pragma once
+#include "plugins/PluginApi.h"

src/plugins/color/translations/colors_en.ts

@@ -0,0 +1,19 @@
+<?xml version="1.0" encoding="utf-8"?>
+<!DOCTYPE TS>
+<TS version="2.1" language="en_US">
+<context>
+    <name>QObject</name>
+    <message>
+        <source>Select item color</source>
+        <translation>Select item color</translation>
+    </message>
+    <message>
+        <source>Set item color…</source>
+        <translation>Set item color…</translation>
+    </message>
+    <message>
+        <source>Clear item colors</source>
+        <translation>Clear item colors</translation>
+    </message>
+</context>
+</TS>

src/plugins/color/translations/colors_fr.ts

@@ -0,0 +1,19 @@
+<?xml version="1.0" encoding="utf-8"?>
+<!DOCTYPE TS>
+<TS version="2.1" language="fr_FR">
+<context>
+    <name>QObject</name>
+    <message>
+        <source>Select item color</source>
+        <translation>Choisir la couleur de l&apos;élément</translation>
+    </message>
+    <message>
+        <source>Set item color…</source>
+        <translation>Définir la couleur de l&apos;élément…</translation>
+    </message>
+    <message>
+        <source>Clear item colors</source>
+        <translation>Réinitialiser les couleurs des éléments</translation>
+    </message>
+</context>
+</TS>

src/plugins/color/translations/colors_ru.ts

@@ -0,0 +1,19 @@
+<?xml version="1.0" encoding="utf-8"?>
+<!DOCTYPE TS>
+<TS version="2.1" language="ru_RU">
+<context>
+    <name>QObject</name>
+    <message>
+        <source>Select item color</source>
+        <translation>Выберите цвет элемента</translation>
+    </message>
+    <message>
+        <source>Set item color…</source>
+        <translation>Задать цвет элемента…</translation>
+    </message>
+    <message>
+        <source>Clear item colors</source>
+        <translation>Сбросить цвета элементов</translation>
+    </message>
+</context>
+</TS>

translations/README.txt

@@ -0,0 +1 @@
+# Translation sources here (use lupdate/lrelease)

translations/idef0_en.ts

@@ -0,0 +1,567 @@
+<?xml version="1.0" encoding="utf-8"?>
+<!DOCTYPE TS>
+<TS version="2.1" language="en_US">
+<context>
+    <name>ArrowItem</name>
+    <message>
+        <source>Arrow label</source>
+        <translation>Arrow label</translation>
+    </message>
+    <message>
+        <source>Label:</source>
+        <translation>Label:</translation>
+    </message>
+</context>
+<context>
+    <name>BlockItem</name>
+    <message>
+        <source>Function</source>
+        <translation>Function</translation>
+    </message>
+    <message>
+        <source>Edit block</source>
+        <translation>Edit block</translation>
+    </message>
+    <message>
+        <source>Title:</source>
+        <translation>Title:</translation>
+    </message>
+    <message>
+        <source>Set price</source>
+        <translation>Set price</translation>
+    </message>
+    <message>
+        <source>Price:</source>
+        <translation>Price:</translation>
+    </message>
+</context>
+<context>
+    <name>DiagramScene</name>
+    <message>
+        <source>TOP</source>
+        <translation>TOP</translation>
+    </message>
+    <message>
+        <source>A0</source>
+        <translation>A0</translation>
+    </message>
+    <message>
+        <source>Landscape</source>
+        <translation>Landscape</translation>
+    </message>
+    <message>
+        <source>Portrait</source>
+        <translation>Portrait</translation>
+    </message>
+</context>
+<context>
+    <name>HeaderFooterItem</name>
+    <message>
+        <source>USED AT:</source>
+        <translation>USED AT:</translation>
+    </message>
+    <message>
+        <source>ORGANIZATION:</source>
+        <translation>ORGANIZATION:</translation>
+    </message>
+    <message>
+        <source>AUTHOR:</source>
+        <translation>AUTHOR:</translation>
+    </message>
+    <message>
+        <source>PROJECT:</source>
+        <translation>PROJECT:</translation>
+    </message>
+    <message>
+        <source>TITLE:</source>
+        <translation>TITLE:</translation>
+    </message>
+    <message>
+        <source>NOTES:</source>
+        <translation>NOTES:</translation>
+    </message>
+    <message>
+        <source>DATE: </source>
+        <translation>DATE: </translation>
+    </message>
+    <message>
+        <source>REV: </source>
+        <translation>REV: </translation>
+    </message>
+    <message>
+        <source>WORKING</source>
+        <translation>WORKING</translation>
+    </message>
+    <message>
+        <source>DRAFT</source>
+        <translation>DRAFT</translation>
+    </message>
+    <message>
+        <source>RECOMMENDED</source>
+        <translation>RECOMMENDED</translation>
+    </message>
+    <message>
+        <source>PUBLICATION</source>
+        <translation>PUBLICATION</translation>
+    </message>
+    <message>
+        <source>READER: </source>
+        <translation>READER: </translation>
+    </message>
+    <message>
+        <source>CONTEXT: </source>
+        <translation>CONTEXT: </translation>
+    </message>
+    <message>
+        <source>NODE: </source>
+        <translation>NODE: </translation>
+    </message>
+    <message>
+        <source>NUMBER: </source>
+        <translation>NUMBER: </translation>
+    </message>
+    <message>
+        <source>Edit header/footer</source>
+        <translation>Edit header/footer</translation>
+    </message>
+    <message>
+        <source>Working</source>
+        <translation>Working</translation>
+    </message>
+    <message>
+        <source>Draft</source>
+        <translation>Draft</translation>
+    </message>
+    <message>
+        <source>Recommended</source>
+        <translation>Recommended</translation>
+    </message>
+    <message>
+        <source>Publication</source>
+        <translation>Publication</translation>
+    </message>
+    <message>
+        <source>Used at:</source>
+        <translation>Used at:</translation>
+    </message>
+    <message>
+        <source>Author:</source>
+        <translation>Author:</translation>
+    </message>
+    <message>
+        <source>Project:</source>
+        <translation>Project:</translation>
+    </message>
+    <message>
+        <source>Notes:</source>
+        <translation>Notes:</translation>
+    </message>
+    <message>
+        <source>Date:</source>
+        <translation>Date:</translation>
+    </message>
+    <message>
+        <source>Rev:</source>
+        <translation>Rev:</translation>
+    </message>
+    <message>
+        <source>Reader:</source>
+        <translation>Reader:</translation>
+    </message>
+    <message>
+        <source>Reader date:</source>
+        <translation>Reader date:</translation>
+    </message>
+    <message>
+        <source>Context:</source>
+        <translation>Context:</translation>
+    </message>
+    <message>
+        <source>Node:</source>
+        <translation>Node:</translation>
+    </message>
+    <message>
+        <source>Number:</source>
+        <translation>Number:</translation>
+    </message>
+    <message>
+        <source>State:</source>
+        <translation>State:</translation>
+    </message>
+</context>
+<context>
+    <name>MainWindow</name>
+    <message>
+        <source>Portrait</source>
+        <translation>Portrait</translation>
+    </message>
+    <message>
+        <source>RMB: add block. LMB on port: drag arrow. Double click block: rename.</source>
+        <translation>RMB: add block. LMB on port: drag arrow. Double click block: rename.</translation>
+    </message>
+    <message>
+        <source>Call Mechanism add</source>
+        <translation>Call Mechanism add</translation>
+    </message>
+    <message>
+        <source>Call Mechanism</source>
+        <translation>Call Mechanism</translation>
+    </message>
+    <message>
+        <source>Select exactly one block to add a call mechanism.</source>
+        <translation>Select exactly one block to add a call mechanism.</translation>
+    </message>
+    <message>
+        <source>Select a block to add a call mechanism.</source>
+        <translation>Select a block to add a call mechanism.</translation>
+    </message>
+    <message>
+        <source>Call mechanism already exists for this block.</source>
+        <translation>Call mechanism already exists for this block.</translation>
+    </message>
+    <message>
+        <source>No eligible target blocks found.</source>
+        <translation>No eligible target blocks found.</translation>
+    </message>
+    <message>
+        <source>Choose target block:</source>
+        <translation>Choose target block:</translation>
+    </message>
+    <message>
+        <source>Click bottom frame to place call mechanism arrow. Esc to cancel.</source>
+        <translation>Click bottom frame to place call mechanism arrow. Esc to cancel.</translation>
+    </message>
+    <message>
+        <source>&amp;File</source>
+        <translation>&amp;File</translation>
+    </message>
+    <message>
+        <source>New</source>
+        <translation>New</translation>
+    </message>
+    <message>
+        <source>Open…</source>
+        <translation>Open…</translation>
+    </message>
+    <message>
+        <source>Save</source>
+        <translation>Save</translation>
+    </message>
+    <message>
+        <source>Save As…</source>
+        <translation>Save As…</translation>
+    </message>
+    <message>
+        <source>Export to PDF…</source>
+        <translation>Export to PDF…</translation>
+    </message>
+    <message>
+        <source>&amp;Edit</source>
+        <translation>&amp;Edit</translation>
+    </message>
+    <message>
+        <source>Swap numbers…</source>
+        <translation>Swap numbers…</translation>
+    </message>
+    <message>
+        <source>&amp;View</source>
+        <translation>&amp;View</translation>
+    </message>
+    <message>
+        <source>Fit</source>
+        <translation>Fit</translation>
+    </message>
+    <message>
+        <source>Scale +</source>
+        <translation>Scale +</translation>
+    </message>
+    <message>
+        <source>Scale -</source>
+        <translation>Scale -</translation>
+    </message>
+    <message>
+        <source>Colorful mode</source>
+        <translation>Colorful mode</translation>
+    </message>
+    <message>
+        <source>Dark mode</source>
+        <translation>Dark mode</translation>
+    </message>
+    <message>
+        <source>Follow system theme</source>
+        <translation>Follow system theme</translation>
+    </message>
+    <message>
+        <source>Arrow color...</source>
+        <translation>Arrow color...</translation>
+    </message>
+    <message>
+        <source>Block border color...</source>
+        <translation>Block border color...</translation>
+    </message>
+    <message>
+        <source>Block font color...</source>
+        <translation>Block font color...</translation>
+    </message>
+    <message>
+        <source>Arrow color</source>
+        <translation>Arrow color</translation>
+    </message>
+    <message>
+        <source>Block border color</source>
+        <translation>Block border color</translation>
+    </message>
+    <message>
+        <source>Block font color</source>
+        <translation>Block font color</translation>
+    </message>
+    <message>
+        <source>Swap numbers</source>
+        <translation>Swap numbers</translation>
+    </message>
+    <message>
+        <source>Select a single block to swap its number.</source>
+        <translation>Select a single block to swap its number.</translation>
+    </message>
+    <message>
+        <source>Select a block.</source>
+        <translation>Select a block.</translation>
+    </message>
+    <message>
+        <source>No other blocks to swap with.</source>
+        <translation>No other blocks to swap with.</translation>
+    </message>
+    <message>
+        <source>Swap with:</source>
+        <translation>Swap with:</translation>
+    </message>
+    <message>
+        <source>Open diagram</source>
+        <translation>Open diagram</translation>
+    </message>
+    <message>
+        <source>IDEF0 Diagram (*.idef0);;JSON Diagram (*.json)</source>
+        <translation>IDEF0 Diagram (*.idef0);;JSON Diagram (*.json)</translation>
+    </message>
+    <message>
+        <source>Save failed</source>
+        <translation>Save failed</translation>
+    </message>
+    <message>
+        <source>Could not open file for writing.</source>
+        <translation>Could not open file for writing.</translation>
+    </message>
+    <message>
+        <source>Save diagram</source>
+        <translation>Save diagram</translation>
+    </message>
+    <message>
+        <source>Save diagram as</source>
+        <translation>Save diagram as</translation>
+    </message>
+    <message>
+        <source>Export to PDF</source>
+        <translation>Export to PDF</translation>
+    </message>
+    <message>
+        <source>Current diagram</source>
+        <translation>Current diagram</translation>
+    </message>
+    <message>
+        <source>All diagrams</source>
+        <translation>All diagrams</translation>
+    </message>
+    <message>
+        <source>Number pages in footer (NUMBER field)</source>
+        <translation>Number pages in footer (NUMBER field)</translation>
+    </message>
+    <message>
+        <source>Export scope:</source>
+        <translation>Export scope:</translation>
+    </message>
+    <message>
+        <source>Welcome</source>
+        <translation>Welcome</translation>
+    </message>
+    <message>
+        <source>Main process</source>
+        <translation>Main process</translation>
+    </message>
+    <message>
+        <source>Example.Org Inc.</source>
+        <translation>Example.Org Inc.</translation>
+    </message>
+    <message>
+        <source>John Doe</source>
+        <translation>John Doe</translation>
+    </message>
+    <message>
+        <source>JD</source>
+        <translation>JD</translation>
+    </message>
+    <message>
+        <source>Title:</source>
+        <translation>Title:</translation>
+    </message>
+    <message>
+        <source>Organization:</source>
+        <translation>Organization:</translation>
+    </message>
+    <message>
+        <source>Author:</source>
+        <translation>Author:</translation>
+    </message>
+    <message>
+        <source>Author&apos;s initials:</source>
+        <translation>Author&apos;s initials:</translation>
+    </message>
+    <message>
+        <source>General</source>
+        <translation>General</translation>
+    </message>
+    <message>
+        <source>Numbering</source>
+        <translation>Numbering</translation>
+    </message>
+    <message>
+        <source>Display</source>
+        <translation>Display</translation>
+    </message>
+    <message>
+        <source>Seconds</source>
+        <translation>Seconds</translation>
+    </message>
+    <message>
+        <source>Minutes</source>
+        <translation>Minutes</translation>
+    </message>
+    <message>
+        <source>Hours</source>
+        <translation>Hours</translation>
+    </message>
+    <message>
+        <source>Days</source>
+        <translation>Days</translation>
+    </message>
+    <message>
+        <source>Weeks</source>
+        <translation>Weeks</translation>
+    </message>
+    <message>
+        <source>Months</source>
+        <translation>Months</translation>
+    </message>
+    <message>
+        <source>Years</source>
+        <translation>Years</translation>
+    </message>
+    <message>
+        <source>Currency:</source>
+        <translation>Currency:</translation>
+    </message>
+    <message>
+        <source>Symbol placement:</source>
+        <translation>Symbol placement:</translation>
+    </message>
+    <message>
+        <source>Time Unit:</source>
+        <translation>Time Unit:</translation>
+    </message>
+    <message>
+        <source>ABC Units</source>
+        <translation>ABC Units</translation>
+    </message>
+    <message>
+        <source>Landscape</source>
+        <translation>Landscape</translation>
+    </message>
+    <message>
+        <source>Portrait</source>
+        <translation>Portrait</translation>
+    </message>
+    <message>
+        <source>With header</source>
+        <translation>With header</translation>
+    </message>
+    <message>
+        <source>With footer</source>
+        <translation>With footer</translation>
+    </message>
+    <message>
+        <source>Size:</source>
+        <translation>Size:</translation>
+    </message>
+    <message>
+        <source>Type:</source>
+        <translation>Type:</translation>
+    </message>
+    <message>
+        <source>Page Setup</source>
+        <translation>Page Setup</translation>
+    </message>
+    <message>
+        <source>Start</source>
+        <translation>Start</translation>
+    </message>
+    <message>
+        <source>Start a new diagram or open an existing one?</source>
+        <translation>Start a new diagram or open an existing one?</translation>
+    </message>
+    <message>
+        <source>Open failed</source>
+        <translation>Open failed</translation>
+    </message>
+    <message>
+        <source>Could not open file for reading.</source>
+        <translation>Could not open file for reading.</translation>
+    </message>
+    <message>
+        <source>File format is invalid.</source>
+        <translation>File format is invalid.</translation>
+    </message>
+    <message>
+        <source>Diagram data missing or corrupted.</source>
+        <translation>Diagram data missing or corrupted.</translation>
+    </message>
+    <message>
+        <source>PDF (*.pdf)</source>
+        <translation>PDF (*.pdf)</translation>
+    </message>
+    <message>
+        <source>IDEF0 Diagram Export</source>
+        <translation>IDEF0 Diagram Export</translation>
+    </message>
+    <message>
+        <source>Export failed</source>
+        <translation>Export failed</translation>
+    </message>
+    <message>
+        <source>Could not initialize PDF painter.</source>
+        <translation>Could not initialize PDF painter.</translation>
+    </message>
+    <message>
+        <source>Unsaved changes</source>
+        <translation>Unsaved changes</translation>
+    </message>
+    <message>
+        <source>You have unsaved changes. Quit anyway?</source>
+        <translation>You have unsaved changes. Quit anyway?</translation>
+    </message>
+    <message>
+        <source>Yes</source>
+        <translation>Yes</translation>
+    </message>
+    <message>
+        <source>No</source>
+        <translation>No</translation>
+    </message>
+    <message>
+        <source>Untitled</source>
+        <translation>Untitled</translation>
+    </message>
+    <message>
+        <source> — IDEF0 editor</source>
+        <translation> — IDEF0 editor</translation>
+    </message>
+</context>
+</TS>

translations/idef0_fr.ts

@@ -0,0 +1,567 @@
+<?xml version="1.0" encoding="utf-8"?>
+<!DOCTYPE TS>
+<TS version="2.1" language="fr_FR">
+<context>
+    <name>ArrowItem</name>
+    <message>
+        <source>Arrow label</source>
+        <translation>Libellé de la flèche</translation>
+    </message>
+    <message>
+        <source>Label:</source>
+        <translation>Libellé :</translation>
+    </message>
+</context>
+<context>
+    <name>BlockItem</name>
+    <message>
+        <source>Function</source>
+        <translation>Fonction</translation>
+    </message>
+    <message>
+        <source>Edit block</source>
+        <translation>Modifier le bloc</translation>
+    </message>
+    <message>
+        <source>Title:</source>
+        <translation>Titre :</translation>
+    </message>
+    <message>
+        <source>Set price</source>
+        <translation>Définir le prix</translation>
+    </message>
+    <message>
+        <source>Price:</source>
+        <translation>Prix :</translation>
+    </message>
+</context>
+<context>
+    <name>DiagramScene</name>
+    <message>
+        <source>TOP</source>
+        <translation>HAUT</translation>
+    </message>
+    <message>
+        <source>A0</source>
+        <translation>A0</translation>
+    </message>
+    <message>
+        <source>Landscape</source>
+        <translation>Paysage</translation>
+    </message>
+    <message>
+        <source>Portrait</source>
+        <translation>Portrait</translation>
+    </message>
+</context>
+<context>
+    <name>HeaderFooterItem</name>
+    <message>
+        <source>USED AT:</source>
+        <translation>UTILISÉ À :</translation>
+    </message>
+    <message>
+        <source>ORGANIZATION:</source>
+        <translation>ORGANISATION :</translation>
+    </message>
+    <message>
+        <source>AUTHOR:</source>
+        <translation>AUTEUR :</translation>
+    </message>
+    <message>
+        <source>PROJECT:</source>
+        <translation>PROJET :</translation>
+    </message>
+    <message>
+        <source>TITLE:</source>
+        <translation>TITRE :</translation>
+    </message>
+    <message>
+        <source>NOTES:</source>
+        <translation>NOTES :</translation>
+    </message>
+    <message>
+        <source>DATE: </source>
+        <translation>DATE : </translation>
+    </message>
+    <message>
+        <source>REV: </source>
+        <translation>RÉV. : </translation>
+    </message>
+    <message>
+        <source>WORKING</source>
+        <translation>EN COURS</translation>
+    </message>
+    <message>
+        <source>DRAFT</source>
+        <translation>BROUILLON</translation>
+    </message>
+    <message>
+        <source>RECOMMENDED</source>
+        <translation>RECOMMANDÉ</translation>
+    </message>
+    <message>
+        <source>PUBLICATION</source>
+        <translation>PUBLICATION</translation>
+    </message>
+    <message>
+        <source>READER: </source>
+        <translation>LECTEUR : </translation>
+    </message>
+    <message>
+        <source>CONTEXT: </source>
+        <translation>CONTEXTE : </translation>
+    </message>
+    <message>
+        <source>NODE: </source>
+        <translation>NŒUD : </translation>
+    </message>
+    <message>
+        <source>NUMBER: </source>
+        <translation>NUMÉRO : </translation>
+    </message>
+    <message>
+        <source>Edit header/footer</source>
+        <translation>Modifier l&apos;en-tête/pied</translation>
+    </message>
+    <message>
+        <source>Working</source>
+        <translation>En cours</translation>
+    </message>
+    <message>
+        <source>Draft</source>
+        <translation>Brouillon</translation>
+    </message>
+    <message>
+        <source>Recommended</source>
+        <translation>Recommandé</translation>
+    </message>
+    <message>
+        <source>Publication</source>
+        <translation>Publication</translation>
+    </message>
+    <message>
+        <source>Used at:</source>
+        <translation>Utilisé à :</translation>
+    </message>
+    <message>
+        <source>Author:</source>
+        <translation>Auteur :</translation>
+    </message>
+    <message>
+        <source>Project:</source>
+        <translation>Projet :</translation>
+    </message>
+    <message>
+        <source>Notes:</source>
+        <translation>Notes :</translation>
+    </message>
+    <message>
+        <source>Date:</source>
+        <translation>Date :</translation>
+    </message>
+    <message>
+        <source>Rev:</source>
+        <translation>Rév. :</translation>
+    </message>
+    <message>
+        <source>Reader:</source>
+        <translation>Lecteur :</translation>
+    </message>
+    <message>
+        <source>Reader date:</source>
+        <translation>Date de lecture :</translation>
+    </message>
+    <message>
+        <source>Context:</source>
+        <translation>Contexte :</translation>
+    </message>
+    <message>
+        <source>Node:</source>
+        <translation>Nœud :</translation>
+    </message>
+    <message>
+        <source>Number:</source>
+        <translation>Numéro :</translation>
+    </message>
+    <message>
+        <source>State:</source>
+        <translation>État :</translation>
+    </message>
+</context>
+<context>
+    <name>MainWindow</name>
+    <message>
+        <source>Portrait</source>
+        <translation>Portrait</translation>
+    </message>
+    <message>
+        <source>RMB: add block. LMB on port: drag arrow. Double click block: rename.</source>
+        <translation>Clic droit : ajouter un bloc. Clic gauche sur un port : tirer une flèche. Double-clic sur un bloc : renommer.</translation>
+    </message>
+    <message>
+        <source>Call Mechanism add</source>
+        <translation>Ajouter un Call Mechanism</translation>
+    </message>
+    <message>
+        <source>Call Mechanism</source>
+        <translation>Call Mechanism</translation>
+    </message>
+    <message>
+        <source>Select exactly one block to add a call mechanism.</source>
+        <translation>Sélectionnez exactement un bloc pour ajouter un Call Mechanism.</translation>
+    </message>
+    <message>
+        <source>Select a block to add a call mechanism.</source>
+        <translation>Sélectionnez un bloc pour ajouter un Call Mechanism.</translation>
+    </message>
+    <message>
+        <source>Call mechanism already exists for this block.</source>
+        <translation>Un Call Mechanism existe déjà pour ce bloc.</translation>
+    </message>
+    <message>
+        <source>No eligible target blocks found.</source>
+        <translation>Aucun bloc cible éligible trouvé.</translation>
+    </message>
+    <message>
+        <source>Choose target block:</source>
+        <translation>Choisissez le bloc cible :</translation>
+    </message>
+    <message>
+        <source>Click bottom frame to place call mechanism arrow. Esc to cancel.</source>
+        <translation>Cliquez sur le cadre inférieur pour placer la flèche Call Mechanism. Échap pour annuler.</translation>
+    </message>
+    <message>
+        <source>&amp;File</source>
+        <translation>&amp;Fichier</translation>
+    </message>
+    <message>
+        <source>New</source>
+        <translation>Nouveau</translation>
+    </message>
+    <message>
+        <source>Open…</source>
+        <translation>Ouvrir…</translation>
+    </message>
+    <message>
+        <source>Save</source>
+        <translation>Enregistrer</translation>
+    </message>
+    <message>
+        <source>Save As…</source>
+        <translation>Enregistrer sous…</translation>
+    </message>
+    <message>
+        <source>Export to PDF…</source>
+        <translation>Exporter en PDF…</translation>
+    </message>
+    <message>
+        <source>&amp;Edit</source>
+        <translation>&amp;Édition</translation>
+    </message>
+    <message>
+        <source>Swap numbers…</source>
+        <translation>Échanger les numéros…</translation>
+    </message>
+    <message>
+        <source>&amp;View</source>
+        <translation>&amp;Affichage</translation>
+    </message>
+    <message>
+        <source>Fit</source>
+        <translation>Adapter</translation>
+    </message>
+    <message>
+        <source>Scale +</source>
+        <translation>Zoom +</translation>
+    </message>
+    <message>
+        <source>Scale -</source>
+        <translation>Zoom -</translation>
+    </message>
+    <message>
+        <source>Colorful mode</source>
+        <translation>Mode coloré</translation>
+    </message>
+    <message>
+        <source>Dark mode</source>
+        <translation>Mode sombre</translation>
+    </message>
+    <message>
+        <source>Follow system theme</source>
+        <translation>Suivre le thème système</translation>
+    </message>
+    <message>
+        <source>Arrow color...</source>
+        <translation>Couleur des flèches...</translation>
+    </message>
+    <message>
+        <source>Block border color...</source>
+        <translation>Couleur du contour du bloc...</translation>
+    </message>
+    <message>
+        <source>Block font color...</source>
+        <translation>Couleur du texte du bloc...</translation>
+    </message>
+    <message>
+        <source>Arrow color</source>
+        <translation>Couleur des flèches</translation>
+    </message>
+    <message>
+        <source>Block border color</source>
+        <translation>Couleur du contour du bloc</translation>
+    </message>
+    <message>
+        <source>Block font color</source>
+        <translation>Couleur du texte du bloc</translation>
+    </message>
+    <message>
+        <source>Swap numbers</source>
+        <translation>Échanger les numéros</translation>
+    </message>
+    <message>
+        <source>Select a single block to swap its number.</source>
+        <translation>Sélectionnez un seul bloc pour échanger son numéro.</translation>
+    </message>
+    <message>
+        <source>Select a block.</source>
+        <translation>Sélectionnez un bloc.</translation>
+    </message>
+    <message>
+        <source>No other blocks to swap with.</source>
+        <translation>Aucun autre bloc pour l&apos;échange.</translation>
+    </message>
+    <message>
+        <source>Swap with:</source>
+        <translation>Échanger avec :</translation>
+    </message>
+    <message>
+        <source>Open diagram</source>
+        <translation>Ouvrir un diagramme</translation>
+    </message>
+    <message>
+        <source>IDEF0 Diagram (*.idef0);;JSON Diagram (*.json)</source>
+        <translation>Diagramme IDEF0 (*.idef0);;Diagramme JSON (*.json)</translation>
+    </message>
+    <message>
+        <source>Save failed</source>
+        <translation>Échec de l&apos;enregistrement</translation>
+    </message>
+    <message>
+        <source>Could not open file for writing.</source>
+        <translation>Impossible d&apos;ouvrir le fichier en écriture.</translation>
+    </message>
+    <message>
+        <source>Save diagram</source>
+        <translation>Enregistrer le diagramme</translation>
+    </message>
+    <message>
+        <source>Save diagram as</source>
+        <translation>Enregistrer le diagramme sous</translation>
+    </message>
+    <message>
+        <source>Export to PDF</source>
+        <translation>Exporter en PDF</translation>
+    </message>
+    <message>
+        <source>Current diagram</source>
+        <translation>Diagramme actuel</translation>
+    </message>
+    <message>
+        <source>All diagrams</source>
+        <translation>Tous les diagrammes</translation>
+    </message>
+    <message>
+        <source>Number pages in footer (NUMBER field)</source>
+        <translation>Numéroter les pages dans le pied (champ NUMBER)</translation>
+    </message>
+    <message>
+        <source>Export scope:</source>
+        <translation>Périmètre d&apos;export :</translation>
+    </message>
+    <message>
+        <source>Welcome</source>
+        <translation>Bienvenue</translation>
+    </message>
+    <message>
+        <source>Main process</source>
+        <translation>Processus principal</translation>
+    </message>
+    <message>
+        <source>Example.Org Inc.</source>
+        <translation>Example.Org Inc.</translation>
+    </message>
+    <message>
+        <source>John Doe</source>
+        <translation>Jean Dupont</translation>
+    </message>
+    <message>
+        <source>JD</source>
+        <translation>JD</translation>
+    </message>
+    <message>
+        <source>Title:</source>
+        <translation>Titre :</translation>
+    </message>
+    <message>
+        <source>Organization:</source>
+        <translation>Organisation :</translation>
+    </message>
+    <message>
+        <source>Author:</source>
+        <translation>Auteur :</translation>
+    </message>
+    <message>
+        <source>Author&apos;s initials:</source>
+        <translation>Initiales de l&apos;auteur :</translation>
+    </message>
+    <message>
+        <source>General</source>
+        <translation>Général</translation>
+    </message>
+    <message>
+        <source>Numbering</source>
+        <translation>Numérotation</translation>
+    </message>
+    <message>
+        <source>Display</source>
+        <translation>Affichage</translation>
+    </message>
+    <message>
+        <source>Seconds</source>
+        <translation>Secondes</translation>
+    </message>
+    <message>
+        <source>Minutes</source>
+        <translation>Minutes</translation>
+    </message>
+    <message>
+        <source>Hours</source>
+        <translation>Heures</translation>
+    </message>
+    <message>
+        <source>Days</source>
+        <translation>Jours</translation>
+    </message>
+    <message>
+        <source>Weeks</source>
+        <translation>Semaines</translation>
+    </message>
+    <message>
+        <source>Months</source>
+        <translation>Mois</translation>
+    </message>
+    <message>
+        <source>Years</source>
+        <translation>Années</translation>
+    </message>
+    <message>
+        <source>Currency:</source>
+        <translation>Devise :</translation>
+    </message>
+    <message>
+        <source>Symbol placement:</source>
+        <translation>Position du symbole :</translation>
+    </message>
+    <message>
+        <source>Time Unit:</source>
+        <translation>Unité de temps :</translation>
+    </message>
+    <message>
+        <source>ABC Units</source>
+        <translation>Unités ABC</translation>
+    </message>
+    <message>
+        <source>Landscape</source>
+        <translation>Paysage</translation>
+    </message>
+    <message>
+        <source>Portrait</source>
+        <translation>Portrait</translation>
+    </message>
+    <message>
+        <source>With header</source>
+        <translation>Avec en-tête</translation>
+    </message>
+    <message>
+        <source>With footer</source>
+        <translation>Avec pied de page</translation>
+    </message>
+    <message>
+        <source>Size:</source>
+        <translation>Taille :</translation>
+    </message>
+    <message>
+        <source>Type:</source>
+        <translation>Orientation :</translation>
+    </message>
+    <message>
+        <source>Page Setup</source>
+        <translation>Mise en page</translation>
+    </message>
+    <message>
+        <source>Start</source>
+        <translation>Démarrer</translation>
+    </message>
+    <message>
+        <source>Start a new diagram or open an existing one?</source>
+        <translation>Créer un nouveau diagramme ou ouvrir un existant ?</translation>
+    </message>
+    <message>
+        <source>Open failed</source>
+        <translation>Échec de l&apos;ouverture</translation>
+    </message>
+    <message>
+        <source>Could not open file for reading.</source>
+        <translation>Impossible d&apos;ouvrir le fichier en lecture.</translation>
+    </message>
+    <message>
+        <source>File format is invalid.</source>
+        <translation>Format de fichier invalide.</translation>
+    </message>
+    <message>
+        <source>Diagram data missing or corrupted.</source>
+        <translation>Données de diagramme manquantes ou corrompues.</translation>
+    </message>
+    <message>
+        <source>PDF (*.pdf)</source>
+        <translation>PDF (*.pdf)</translation>
+    </message>
+    <message>
+        <source>IDEF0 Diagram Export</source>
+        <translation>Export diagramme IDEF0</translation>
+    </message>
+    <message>
+        <source>Export failed</source>
+        <translation>Échec de l&apos;export</translation>
+    </message>
+    <message>
+        <source>Could not initialize PDF painter.</source>
+        <translation>Impossible d&apos;initialiser l&apos;export PDF.</translation>
+    </message>
+    <message>
+        <source>Unsaved changes</source>
+        <translation>Modifications non enregistrées</translation>
+    </message>
+    <message>
+        <source>You have unsaved changes. Quit anyway?</source>
+        <translation>Des modifications ne sont pas enregistrées. Quitter quand même ?</translation>
+    </message>
+    <message>
+        <source>Yes</source>
+        <translation>Oui</translation>
+    </message>
+    <message>
+        <source>No</source>
+        <translation>Non</translation>
+    </message>
+    <message>
+        <source>Untitled</source>
+        <translation>Sans titre</translation>
+    </message>
+    <message>
+        <source> — IDEF0 editor</source>
+        <translation> — éditeur IDEF0</translation>
+    </message>
+</context>
+</TS>

translations/idef0_ru.ts

@@ -0,0 +1,571 @@
+<?xml version="1.0" encoding="utf-8"?>
+<!DOCTYPE TS>
+<TS version="2.1" language="ru_RU">
+<context>
+    <name>ArrowItem</name>
+    <message>
+        <source>Arrow label</source>
+        <translation>Подпись стрелки</translation>
+    </message>
+    <message>
+        <source>Label:</source>
+        <translation>Подпись:</translation>
+    </message>
+</context>
+<context>
+    <name>BlockItem</name>
+    <message>
+        <source>Function</source>
+        <translation>Функция</translation>
+    </message>
+    <message>
+        <source>Edit block</source>
+        <translation>Редактировать блок</translation>
+    </message>
+    <message>
+        <source>Title:</source>
+        <translation>Название:</translation>
+    </message>
+    <message>
+        <source>Set price</source>
+        <translation>Указать стоимость</translation>
+    </message>
+    <message>
+        <source>Price:</source>
+        <translation>Стоимость:</translation>
+    </message>
+</context>
+<context>
+    <name>DiagramScene</name>
+    <message>
+        <source>TOP</source>
+        <translation>ВЕРХ</translation>
+    </message>
+    <message>
+        <source>A0</source>
+        <translation>A0</translation>
+    </message>
+    <message>
+        <source>Landscape</source>
+        <translation>Альбомная</translation>
+    </message>
+    <message>
+        <source>Portrait</source>
+        <translation>Портретная</translation>
+    </message>
+</context>
+<context>
+    <name>HeaderFooterItem</name>
+    <message>
+        <source>USED AT:</source>
+        <translation>МЕСТО ПРИМЕНЕНИЯ:</translation>
+    </message>
+    <message>
+        <source>ORGANIZATION:</source>
+        <translation>ОРГАНИЗАЦИЯ:</translation>
+    </message>
+    <message>
+        <source>AUTHOR:</source>
+        <translation>АВТОР:</translation>
+    </message>
+    <message>
+        <source>PROJECT:</source>
+        <translation>ПРОЕКТ:</translation>
+    </message>
+    <message>
+        <source>TITLE:</source>
+        <translation>НАЗВАНИЕ:</translation>
+    </message>
+    <message>
+        <source>NOTES:</source>
+        <translation>ПРИМЕЧАНИЯ:</translation>
+    </message>
+    <message>
+        <source>DATE: </source>
+        <translation>ДАТА: </translation>
+    </message>
+    <message>
+        <source>REV: </source>
+        <translation>РЕВ.: </translation>
+    </message>
+    <message>
+        <source>WORKING</source>
+        <translation>В РАБОТЕ</translation>
+    </message>
+    <message>
+        <source>DRAFT</source>
+        <translation>ЧЕРНОВИК</translation>
+    </message>
+    <message>
+        <source>RECOMMENDED</source>
+        <translation>РЕКОМЕНДОВАНО</translation>
+    </message>
+    <message>
+        <source>PUBLICATION</source>
+        <translation>ПУБЛИКАЦИЯ</translation>
+    </message>
+    <message>
+        <source>READER: </source>
+        <translation>ПРОВЕРЯЮЩИЙ: </translation>
+    </message>
+    <message>
+        <source>CONTEXT: </source>
+        <translation>КОНТЕКСТ: </translation>
+    </message>
+    <message>
+        <source>NODE: </source>
+	<translation>УРОВЕНЬ: </translation>
+    </message>
+    <message>
+        <source>NUMBER: </source>
+        <translation>НОМЕР: </translation>
+    </message>
+    <message>
+        <source>Edit header/footer</source>
+        <translation>Редактировать шапку/подвал</translation>
+    </message>
+    <message>
+        <source>Working</source>
+        <translation>В работе</translation>
+    </message>
+    <message>
+        <source>Draft</source>
+        <translation>Черновик</translation>
+    </message>
+    <message>
+        <source>Recommended</source>
+        <translation>Рекомендовано</translation>
+    </message>
+    <message>
+        <source>Publication</source>
+        <translation>Публикация</translation>
+    </message>
+    <message>
+        <source>Used at:</source>
+        <translation>Место применения:</translation>
+    </message>
+    <message>
+        <source>Author:</source>
+        <translation>Автор:</translation>
+    </message>
+    <message>
+        <source>Project:</source>
+        <translation>Проект:</translation>
+    </message>
+    <message>
+        <source>Notes:</source>
+        <translation>Примечания:</translation>
+    </message>
+    <message>
+        <source>Date:</source>
+        <translation>Дата:</translation>
+    </message>
+    <message>
+        <source>Rev:</source>
+        <translation>Рев.:</translation>
+    </message>
+    <message>
+        <source>Reader:</source>
+        <translation>Проверяющий:</translation>
+    </message>
+    <message>
+        <source>Reader date:</source>
+        <translation>Дата проверки:</translation>
+    </message>
+    <message>
+        <source>Context:</source>
+        <translation>Контекст:</translation>
+    </message>
+    <message>
+        <source>Node:</source>
+        <translation>Уровень:</translation>
+    </message>
+    <message>
+        <source>Number:</source>
+        <translation>Номер:</translation>
+    </message>
+    <message>
+        <source>State:</source>
+        <translation>Состояние:</translation>
+    </message>
+</context>
+<context>
+    <name>MainWindow</name>
+    <message>
+        <source>Portrait</source>
+        <translation>Портретная</translation>
+    </message>
+    <message>
+        <source>RMB: add block. LMB on port: drag arrow. Double click block: rename.</source>
+        <translation>ПКМ: добавить блок. ЛКМ на порту: тянуть стрелку. Двойной щелчок по блоку: переименовать.</translation>
+    </message>
+    <message>
+        <source>Call Mechanism add</source>
+        <translation>Добавить Call Mechanism</translation>
+    </message>
+    <message>
+        <source>Call Mechanism</source>
+        <translation>Call Mechanism</translation>
+    </message>
+    <message>
+        <source>Select exactly one block to add a call mechanism.</source>
+        <translation>Выберите ровно один блок для добавления Call Mechanism.</translation>
+    </message>
+    <message>
+        <source>Select a block to add a call mechanism.</source>
+        <translation>Выберите блок для добавления Call Mechanism.</translation>
+    </message>
+    <message>
+        <source>Call mechanism already exists for this block.</source>
+        <translation>Call Mechanism уже есть у этого блока.</translation>
+    </message>
+    <message>
+        <source>No eligible target blocks found.</source>
+        <translation>Нет подходящих целевых блоков.</translation>
+    </message>
+    <message>
+        <source>Choose target block:</source>
+        <translation>Выберите целевой блок:</translation>
+    </message>
+    <message>
+        <source>Click bottom frame to place call mechanism arrow. Esc to cancel.</source>
+        <translation>Нажмите на нижнюю рамку для размещения стрелки Call Mechanism. Esc — отмена.</translation>
+    </message>
+    <message>
+        <source>&amp;File</source>
+        <translation>&amp;Файл</translation>
+    </message>
+    <message>
+        <source>New</source>
+        <translation>Новый</translation>
+    </message>
+    <message>
+        <source>Open…</source>
+        <translation>Открыть…</translation>
+    </message>
+    <message>
+        <source>Save</source>
+        <translation>Сохранить</translation>
+    </message>
+    <message>
+        <source>Save As…</source>
+        <translation>Сохранить как…</translation>
+    </message>
+    <message>
+        <source>Export to PDF…</source>
+        <translation>Экспорт в PDF…</translation>
+    </message>
+    <message>
+        <source>&amp;Edit</source>
+        <translation>&amp;Правка</translation>
+    </message>
+    <message>
+        <source>Swap numbers…</source>
+        <translation>Поменять номера…</translation>
+    </message>
+    <message>
+        <source>&amp;View</source>
+        <translation>&amp;Вид</translation>
+    </message>
+    <message>
+	<source>&amp;Plugins</source>
+	<translation>&amp;Плагины</translation>
+    </message>
+    <message>
+        <source>Fit</source>
+        <translation>Вписать</translation>
+    </message>
+    <message>
+        <source>Scale +</source>
+        <translation>Масштаб +</translation>
+    </message>
+    <message>
+        <source>Scale -</source>
+        <translation>Масштаб -</translation>
+    </message>
+    <message>
+        <source>Colorful mode</source>
+        <translation>Цветной режим</translation>
+    </message>
+    <message>
+        <source>Dark mode</source>
+        <translation>Тёмный режим</translation>
+    </message>
+    <message>
+        <source>Follow system theme</source>
+        <translation>Следовать теме системы</translation>
+    </message>
+    <message>
+        <source>Arrow color...</source>
+        <translation>Цвет стрелок...</translation>
+    </message>
+    <message>
+        <source>Block border color...</source>
+        <translation>Цвет рамки блока...</translation>
+    </message>
+    <message>
+        <source>Block font color...</source>
+        <translation>Цвет текста блока...</translation>
+    </message>
+    <message>
+        <source>Arrow color</source>
+        <translation>Цвет стрелок</translation>
+    </message>
+    <message>
+        <source>Block border color</source>
+        <translation>Цвет рамки блока</translation>
+    </message>
+    <message>
+        <source>Block font color</source>
+        <translation>Цвет текста блока</translation>
+    </message>
+    <message>
+        <source>Swap numbers</source>
+        <translation>Поменять номера</translation>
+    </message>
+    <message>
+        <source>Select a single block to swap its number.</source>
+        <translation>Выберите один блок, чтобы поменять его номер.</translation>
+    </message>
+    <message>
+        <source>Select a block.</source>
+        <translation>Выберите блок.</translation>
+    </message>
+    <message>
+        <source>No other blocks to swap with.</source>
+        <translation>Нет других блоков для обмена.</translation>
+    </message>
+    <message>
+        <source>Swap with:</source>
+        <translation>Поменять с:</translation>
+    </message>
+    <message>
+        <source>Open diagram</source>
+        <translation>Открыть диаграмму</translation>
+    </message>
+    <message>
+        <source>IDEF0 Diagram (*.idef0);;JSON Diagram (*.json)</source>
+        <translation>Диаграмма IDEF0 (*.idef0);;Диаграмма JSON (*.json)</translation>
+    </message>
+    <message>
+        <source>Save failed</source>
+        <translation>Ошибка сохранения</translation>
+    </message>
+    <message>
+        <source>Could not open file for writing.</source>
+        <translation>Не удалось открыть файл для записи.</translation>
+    </message>
+    <message>
+        <source>Save diagram</source>
+        <translation>Сохранить диаграмму</translation>
+    </message>
+    <message>
+        <source>Save diagram as</source>
+        <translation>Сохранить диаграмму как</translation>
+    </message>
+    <message>
+        <source>Export to PDF</source>
+        <translation>Экспорт в PDF</translation>
+    </message>
+    <message>
+        <source>Current diagram</source>
+        <translation>Текущая диаграмма</translation>
+    </message>
+    <message>
+        <source>All diagrams</source>
+        <translation>Все диаграммы</translation>
+    </message>
+    <message>
+        <source>Number pages in footer (NUMBER field)</source>
+        <translation>Нумеровать страницы в подвале (поле NUMBER)</translation>
+    </message>
+    <message>
+        <source>Export scope:</source>
+        <translation>Область экспорта:</translation>
+    </message>
+    <message>
+        <source>Welcome</source>
+        <translation>Добро пожаловать</translation>
+    </message>
+    <message>
+        <source>Main process</source>
+        <translation>Основной процесс</translation>
+    </message>
+    <message>
+        <source>Example.Org Inc.</source>
+        <translation>Example.Org Inc.</translation>
+    </message>
+    <message>
+        <source>John Doe</source>
+        <translation>Иван Иванов</translation>
+    </message>
+    <message>
+        <source>JD</source>
+        <translation>ИИ</translation>
+    </message>
+    <message>
+        <source>Title:</source>
+        <translation>Название:</translation>
+    </message>
+    <message>
+        <source>Organization:</source>
+        <translation>Организация:</translation>
+    </message>
+    <message>
+        <source>Author:</source>
+        <translation>Автор:</translation>
+    </message>
+    <message>
+        <source>Author&apos;s initials:</source>
+        <translation>Инициалы автора:</translation>
+    </message>
+    <message>
+        <source>General</source>
+        <translation>Общее</translation>
+    </message>
+    <message>
+        <source>Numbering</source>
+        <translation>Нумерация</translation>
+    </message>
+    <message>
+        <source>Display</source>
+        <translation>Отображение</translation>
+    </message>
+    <message>
+        <source>Seconds</source>
+        <translation>Секунды</translation>
+    </message>
+    <message>
+        <source>Minutes</source>
+        <translation>Минуты</translation>
+    </message>
+    <message>
+        <source>Hours</source>
+        <translation>Часы</translation>
+    </message>
+    <message>
+        <source>Days</source>
+        <translation>Дни</translation>
+    </message>
+    <message>
+        <source>Weeks</source>
+        <translation>Недели</translation>
+    </message>
+    <message>
+        <source>Months</source>
+        <translation>Месяцы</translation>
+    </message>
+    <message>
+        <source>Years</source>
+        <translation>Годы</translation>
+    </message>
+    <message>
+        <source>Currency:</source>
+        <translation>Валюта:</translation>
+    </message>
+    <message>
+        <source>Symbol placement:</source>
+        <translation>Расположение символа:</translation>
+    </message>
+    <message>
+        <source>Time Unit:</source>
+        <translation>Единица времени:</translation>
+    </message>
+    <message>
+        <source>ABC Units</source>
+        <translation>Единицы ABC</translation>
+    </message>
+    <message>
+        <source>Landscape</source>
+        <translation>Альбомная</translation>
+    </message>
+    <message>
+        <source>Portrait</source>
+        <translation>Портретная</translation>
+    </message>
+    <message>
+        <source>With header</source>
+        <translation>С заголовком</translation>
+    </message>
+    <message>
+        <source>With footer</source>
+        <translation>С подвалом</translation>
+    </message>
+    <message>
+        <source>Size:</source>
+        <translation>Размер:</translation>
+    </message>
+    <message>
+        <source>Type:</source>
+        <translation>Ориентация:</translation>
+    </message>
+    <message>
+        <source>Page Setup</source>
+        <translation>Параметры страницы</translation>
+    </message>
+    <message>
+        <source>Start</source>
+        <translation>Начать</translation>
+    </message>
+    <message>
+        <source>Start a new diagram or open an existing one?</source>
+        <translation>Начать новую диаграмму или открыть существующую?</translation>
+    </message>
+    <message>
+        <source>Open failed</source>
+        <translation>Ошибка открытия</translation>
+    </message>
+    <message>
+        <source>Could not open file for reading.</source>
+        <translation>Не удалось открыть файл для чтения.</translation>
+    </message>
+    <message>
+        <source>File format is invalid.</source>
+        <translation>Недопустимый формат файла.</translation>
+    </message>
+    <message>
+        <source>Diagram data missing or corrupted.</source>
+        <translation>Данные диаграммы отсутствуют или повреждены.</translation>
+    </message>
+    <message>
+        <source>PDF (*.pdf)</source>
+        <translation>PDF (*.pdf)</translation>
+    </message>
+    <message>
+        <source>IDEF0 Diagram Export</source>
+        <translation>Экспорт диаграммы IDEF0</translation>
+    </message>
+    <message>
+        <source>Export failed</source>
+        <translation>Ошибка экспорта</translation>
+    </message>
+    <message>
+        <source>Could not initialize PDF painter.</source>
+        <translation>Не удалось инициализировать вывод в PDF.</translation>
+    </message>
+    <message>
+        <source>Unsaved changes</source>
+        <translation>Несохраненные изменения</translation>
+    </message>
+    <message>
+        <source>You have unsaved changes. Quit anyway?</source>
+        <translation>Есть несохраненные изменения. Выйти?</translation>
+    </message>
+    <message>
+        <source>Yes</source>
+        <translation>Да</translation>
+    </message>
+    <message>
+        <source>No</source>
+        <translation>Нет</translation>
+    </message>
+    <message>
+        <source>Untitled</source>
+        <translation>Без имени</translation>
+    </message>
+    <message>
+        <source> — IDEF0 editor</source>
+        <translation> — редактор IDEF0</translation>
+    </message>
+</context>
+</TS>