Function InputHandler

boards/waveshare-esp32-s3-lcd-147/interface.cpp:70–162

** Function: InputHandler ** Handles the variables PrevPress, NextPress, SelPress, AnyKeyPress and EscPress **********************************************************************/

** Handles the variables PrevPress, NextPress, SelPress, AnyKeyPress and EscPress
**********************************************************************/
void InputHandler(void) {
    static unsigned long tm = 0;
    constexpr unsigned long kInputDebounceMs = 75;
    if (launcherMillis() - tm < kInputDebounceMs && !LongPress) return;

    checkPowerSaveTime();

    static bool buttonWasDown = false;
    static unsigned long buttonDownAt = 0;
    static uint8_t drawn = 2;
    constexpr unsigned long kSelectPressMs = 550;
    constexpr unsigned long kBackPressMs = 1200;
    constexpr unsigned long kDoublePressIntervalMs = 300;

    // Variables for double press detection
    static unsigned long lastButtonReleaseTime = 0;
    static int clickCount = 0;
    static bool pendingNextPress = false;
    static unsigned long pendingTime = 0;

    // Check for pending NextPress timeout
    if (pendingNextPress && launcherMillis() - pendingTime > kDoublePressIntervalMs) {
        NextPress = true;
        pendingNextPress = false;
    }

    bool buttonDown = (launcherGpioRead(SEL_BTN) == LOW);

    if (buttonDown && !buttonWasDown) {
        buttonWasDown = true;
        buttonDownAt = launcherMillis();
        tm = launcherMillis();
        AnyKeyPress = true;
        LongPress = false;
        if (wakeUpScreen()) return;
    }

    if (buttonDown) {
        AnyKeyPress = true;
        if (launcherMillis() - buttonDownAt >= kSelectPressMs) {
            LongPress = true;
            if (drawn > 1) {
                tft->fillRect(tftWidth - 3, 0, 3, tftHeight, GREENYELLOW);
                tft->fillRect(0, tftHeight - 3, tftWidth, 3, GREENYELLOW);
                drawn = 1;
            }
        }
        if (launcherMillis() - buttonDownAt >= kBackPressMs && drawn > 0) {
            tft->fillRect(tftWidth - 3, 0, 3, tftHeight, RED);
            tft->fillRect(0, tftHeight - 3, tftWidth, 3, RED);
            drawn = 0;
        }
        return;
    }

    if (buttonWasDown) {
        buttonWasDown = false;
        unsigned long heldMs = launcherMillis() - buttonDownAt;