Method NavUpdate

src/imgui/imgui.cpp:13472–13643

}

static void ImGui::NavUpdate()
{
    ImGuiContext& g = *GImGui;
    ImGuiIO& io = g.IO;

    io.WantSetMousePos = false;
    //if (g.NavScoringDebugCount > 0) IMGUI_DEBUG_LOG_NAV("[nav] NavScoringDebugCount %d for '%s' layer %d (Init:%d, Move:%d)\n", g.NavScoringDebugCount, g.NavWindow ? g.NavWindow->Name : "NULL", g.NavLayer, g.NavInitRequest || g.NavInitResultId != 0, g.NavMoveRequest);

    // Set input source based on which keys are last pressed (as some features differs when used with Gamepad vs Keyboard)
    // FIXME-NAV: Now that keys are separated maybe we can get rid of NavInputSource?
    const bool nav_gamepad_active = (io.ConfigFlags & ImGuiConfigFlags_NavEnableGamepad) != 0 && (io.BackendFlags & ImGuiBackendFlags_HasGamepad) != 0;
    const ImGuiKey nav_gamepad_keys_to_change_source[] = { ImGuiKey_GamepadFaceRight, ImGuiKey_GamepadFaceLeft, ImGuiKey_GamepadFaceUp, ImGuiKey_GamepadFaceDown, ImGuiKey_GamepadDpadRight, ImGuiKey_GamepadDpadLeft, ImGuiKey_GamepadDpadUp, ImGuiKey_GamepadDpadDown };
    if (nav_gamepad_active)
        for (ImGuiKey key : nav_gamepad_keys_to_change_source)
            if (IsKeyDown(key))
                g.NavInputSource = ImGuiInputSource_Gamepad;
    const bool nav_keyboard_active = (io.ConfigFlags & ImGuiConfigFlags_NavEnableKeyboard) != 0;
    const ImGuiKey nav_keyboard_keys_to_change_source[] = { ImGuiKey_Space, ImGuiKey_Enter, ImGuiKey_Escape, ImGuiKey_RightArrow, ImGuiKey_LeftArrow, ImGuiKey_UpArrow, ImGuiKey_DownArrow };
    if (nav_keyboard_active)
        for (ImGuiKey key : nav_keyboard_keys_to_change_source)
            if (IsKeyDown(key))
                g.NavInputSource = ImGuiInputSource_Keyboard;

    // Process navigation init request (select first/default focus)
    g.NavJustMovedToId = 0;
    g.NavJustMovedToFocusScopeId = g.NavJustMovedFromFocusScopeId = 0;
    if (g.NavInitResult.ID != 0)
        NavInitRequestApplyResult();
    g.NavInitRequest = false;
    g.NavInitRequestFromMove = false;
    g.NavInitResult.ID = 0;

    // Process navigation move request
    if (g.NavMoveSubmitted)
        NavMoveRequestApplyResult();
    g.NavTabbingCounter = 0;
    g.NavMoveSubmitted = g.NavMoveScoringItems = false;
    if (g.NavCursorHideFrames > 0)
        if (--g.NavCursorHideFrames == 0)
            g.NavCursorVisible = true;

    // Schedule mouse position update (will be done at the bottom of this function, after 1) processing all move requests and 2) updating scrolling)
    bool set_mouse_pos = false;
    if (g.NavMousePosDirty && g.NavIdIsAlive)
        if (g.NavCursorVisible && g.NavHighlightItemUnderNav && g.NavWindow)
            set_mouse_pos = true;
    g.NavMousePosDirty = false;
    IM_ASSERT(g.NavLayer == ImGuiNavLayer_Main || g.NavLayer == ImGuiNavLayer_Menu);

    // Store our return window (for returning from Menu Layer to Main Layer) and clear it as soon as we step back in our own Layer 0
    if (g.NavWindow)
        NavSaveLastChildNavWindowIntoParent(g.NavWindow);
    if (g.NavWindow && g.NavWindow->NavLastChildNavWindow != NULL && g.NavLayer == ImGuiNavLayer_Main)
        g.NavWindow->NavLastChildNavWindow = NULL;

    // Update CTRL+TAB and Windowing features (hold Square to move/resize/etc.)
    NavUpdateWindowing();