core: add passwordEmptyTimerCallback

Author: PaideiaDilemma

src/config/ConfigManager.cpp

@@ -39,6 +39,7 @@ void CConfigManager::init() {
     m_config.addConfigValue("general:hide_cursor", Hyprlang::INT{0});
     m_config.addConfigValue("general:grace", Hyprlang::INT{0});
     m_config.addConfigValue("general:no_fade_in", Hyprlang::INT{0});
+    m_config.addConfigValue("general:input_empty_fade_timeout", Hyprlang::INT{1000});
 
     m_config.addSpecialCategory("background", Hyprlang::SSpecialCategoryOptions{.key = nullptr, .anonymousKeyBased = true});
     m_config.addSpecialConfigValue("background", "monitor", Hyprlang::STRING{""});

src/core/hyprlock.cpp

@@ -28,8 +28,10 @@ CHyprlock::CHyprlock(const std::string& wlDisplay) {
     if (!m_pXKBContext)
         Debug::log(ERR, "Failed to create xkb context");
 
-    const auto GRACE = (Hyprlang::INT* const*)g_pConfigManager->getValuePtr("general:grace");
-    m_tGraceEnds     = **GRACE ? std::chrono::system_clock::now() + std::chrono::seconds(**GRACE) : std::chrono::system_clock::from_time_t(0);
+    const auto GRACE          = (Hyprlang::INT* const*)g_pConfigManager->getValuePtr("general:grace");
+    m_tGraceEnds              = **GRACE ? std::chrono::system_clock::now() + std::chrono::seconds(**GRACE) : std::chrono::system_clock::from_time_t(0);
+    const auto FADETIMEOUT    = (Hyprlang::INT* const*)g_pConfigManager->getValuePtr("general:input_empty_fade_timeout");
+    m_iEmptyPasswordTimeoutMs = **FADETIMEOUT;
 }
 
 // wl_seat
@@ -643,6 +645,14 @@ static const ext_session_lock_v1_listener sessionLockListener = {
 
 // end session_lock
 
+static void passwordEmptyTimerCallback(std::shared_ptr<CTimer> self, void* data) {
+    g_pRenderer->onEmptyPasswordFade();
+
+    for (auto& o : g_pHyprlock->m_vOutputs) {
+        o->sessionLockSurface->render();
+    }
+}
+
 void CHyprlock::onPasswordCheckTimer() {
     // check result
     if (m_sPasswordState.result->success) {
@@ -658,6 +668,12 @@ void CHyprlock::onPasswordCheckTimer() {
     }
 
     m_sPasswordState.result.reset();
+
+    if (m_sPasswordState.emptyBufferTimer.get()) {
+        m_sPasswordState.emptyBufferTimer->cancel();
+        m_sPasswordState.emptyBufferTimer.reset();
+    }
+    m_sPasswordState.emptyBufferTimer = addTimer(std::chrono::milliseconds(m_iEmptyPasswordTimeoutMs), passwordEmptyTimerCallback, nullptr);
 }
 
 bool CHyprlock::passwordCheckWaiting() {
@@ -717,6 +733,13 @@ void CHyprlock::onKey(uint32_t key, bool down) {
             m_sPasswordState.passBuffer += std::string{buf, len - 1};
     }
 
+    if (m_sPasswordState.passBuffer.empty() && !m_sPasswordState.emptyBufferTimer.get())
+        m_sPasswordState.emptyBufferTimer = addTimer(std::chrono::milliseconds(m_iEmptyPasswordTimeoutMs), passwordEmptyTimerCallback, nullptr);
+    else if (!m_sPasswordState.passBuffer.empty() && m_sPasswordState.emptyBufferTimer.get()) {
+        m_sPasswordState.emptyBufferTimer->cancel();
+        m_sPasswordState.emptyBufferTimer.reset();
+    }
+
     for (auto& o : m_vOutputs) {
         o->sessionLockSurface->render();
     }
@@ -870,4 +893,4 @@ std::string CHyprlock::spawnSync(const std::string& cmd) {
 
 zwlr_screencopy_manager_v1* CHyprlock::getScreencopy() {
     return m_sWaylandState.screencopy;
-}
+}

src/core/hyprlock.hpp

@@ -76,7 +76,8 @@ class CHyprlock {
 
     //
     std::chrono::system_clock::time_point m_tGraceEnds;
-    Vector2D                              m_vLastEnterCoords = {};
+    Vector2D                              m_vLastEnterCoords        = {};
+    uint64_t                              m_iEmptyPasswordTimeoutMs = 0;
 
     std::vector<std::unique_ptr<COutput>> m_vOutputs;
 
@@ -115,6 +116,7 @@ class CHyprlock {
         std::string                                     passBuffer = "";
         std::shared_ptr<CPassword::SVerificationResult> result;
         std::optional<std::string>                      lastFailReason;
+        std::shared_ptr<CTimer>                         emptyBufferTimer;
     } m_sPasswordState;
 
     struct {