LRESULT FancyZones::WndProc()

in src/modules/fancyzones/FancyZonesLib/FancyZones.cpp [675:807]
124 lines of code
27 McCabe index (conditional complexity)

LRESULT FancyZones::WndProc(HWND window, UINT message, WPARAM wparam, LPARAM lparam) noexcept
{
    switch (message)
    {
    case WM_HOTKEY:
    {
        if (wparam == static_cast<WPARAM>(HotkeyId::Editor))
        {
            ToggleEditor();
        }
        else if (wparam == static_cast<WPARAM>(HotkeyId::NextTab) || wparam == static_cast<WPARAM>(HotkeyId::PrevTab))
        {
            bool reverse = wparam == static_cast<WPARAM>(HotkeyId::PrevTab);
            CycleTabs(reverse);
        }
    }
    break;

    case WM_SETTINGCHANGE:
    {
        if (wparam == SPI_SETWORKAREA)
        {
            // Changes in taskbar position resulted in different size of work area.
            // Invalidate cached work-areas so they can be recreated with latest information.
            m_workAreaHandler.Clear();
            OnDisplayChange(DisplayChangeType::WorkArea);
        }
    }
    break;

    case WM_DISPLAYCHANGE:
    {
        // Display resolution changed. Invalidate cached work-areas so they can be recreated with latest information.
        m_workAreaHandler.Clear();
        OnDisplayChange(DisplayChangeType::DisplayChange);
    }
    break;

    default:
    {
        POINT ptScreen;
        GetPhysicalCursorPos(&ptScreen);

        if (message == WM_PRIV_SNAP_HOTKEY)
        {
            OnSnapHotkey(static_cast<DWORD>(lparam));
        }
        else if (message == WM_PRIV_VD_INIT)
        {
            OnDisplayChange(DisplayChangeType::Initialization);
        }
        else if (message == WM_PRIV_VD_SWITCH)
        {
            OnDisplayChange(DisplayChangeType::VirtualDesktop);
        }
        else if (message == WM_PRIV_VD_UPDATE)
        {
            OnDisplayChange(DisplayChangeType::Initialization);
        }
        else if (message == WM_PRIV_EDITOR)
        {
            if (lparam == static_cast<LPARAM>(EditorExitKind::Exit))
            {
                OnEditorExitEvent();
            }

            {
                // Clean up the event either way
                m_terminateEditorEvent.release();
            }
        }
        else if (message == WM_PRIV_MOVESIZESTART)
        {
            auto hwnd = reinterpret_cast<HWND>(wparam);
            if (auto monitor = MonitorFromPoint(ptScreen, MONITOR_DEFAULTTONULL))
            {
                MoveSizeStart(hwnd, monitor, ptScreen);
            }
        }
        else if (message == WM_PRIV_MOVESIZEEND)
        {
            auto hwnd = reinterpret_cast<HWND>(wparam);
            MoveSizeEnd(hwnd, ptScreen);
        }
        else if (message == WM_PRIV_LOCATIONCHANGE)
        {
            if (m_windowMoveHandler.InDragging())
            {
                if (auto monitor = MonitorFromPoint(ptScreen, MONITOR_DEFAULTTONULL))
                {
                    MoveSizeUpdate(monitor, ptScreen);
                }
            }
        }
        else if (message == WM_PRIV_WINDOWCREATED)
        {
            auto hwnd = reinterpret_cast<HWND>(wparam);
            WindowCreated(hwnd);
        }
        else if (message == WM_PRIV_LAYOUT_HOTKEYS_FILE_UPDATE)
        {
            LayoutHotkeys::instance().LoadData();
        }
        else if (message == WM_PRIV_LAYOUT_TEMPLATES_FILE_UPDATE)
        {
            LayoutTemplates::instance().LoadData();
        }
        else if (message == WM_PRIV_CUSTOM_LAYOUTS_FILE_UPDATE)
        {
            CustomLayouts::instance().LoadData();
        }
        else if (message == WM_PRIV_APPLIED_LAYOUTS_FILE_UPDATE)
        {
            AppliedLayouts::instance().LoadData();
            UpdateZoneSets();
        }
        else if (message == WM_PRIV_QUICK_LAYOUT_KEY)
        {
            ApplyQuickLayout(static_cast<int>(lparam));
        }
        else if (message == WM_PRIV_SETTINGS_CHANGED)
        {
            OnSettingsChanged();
        }
        else
        {
            return DefWindowProc(window, message, wparam, lparam);
        }
    }
    break;
    }
    return 0;
}