From 2b430c5d8a6d17b6621761107b9453835eff9787 Mon Sep 17 00:00:00 2001
From: Maximilian Seidler <maximilian.seidler@soundwork.at>
Date: Wed, 6 Mar 2024 11:36:51 +0100
Subject: [PATCH] core: add passwordEmptyTimerCallback

---
 src/config/ConfigManager.cpp |  1 +
 src/core/hyprlock.cpp        | 29 ++++++++++++++++++++++++++---
 src/core/hyprlock.hpp        |  4 +++-
 3 files changed, 30 insertions(+), 4 deletions(-)

diff --git a/src/config/ConfigManager.cpp b/src/config/ConfigManager.cpp
index 97db9ead..590694d7 100644
--- a/src/config/ConfigManager.cpp
+++ b/src/config/ConfigManager.cpp
@@ -46,6 +46,7 @@ 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{""});
diff --git a/src/core/hyprlock.cpp b/src/core/hyprlock.cpp
index b33ac7aa..731cd595 100644
--- a/src/core/hyprlock.cpp
+++ b/src/core/hyprlock.cpp
@@ -30,8 +30,10 @@ 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
@@ -654,6 +656,14 @@ 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) {
@@ -669,6 +679,12 @@ 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() {
@@ -730,6 +746,13 @@ 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();
     }
@@ -920,4 +943,4 @@ void CHyprlock::attemptRestoreOnDeath() {
 
     spawnSync("hyprctl keyword misc:allow_session_lock_restore true");
     spawnAsync("sleep 2 && hyprlock & disown");
-}
\ No newline at end of file
+}
diff --git a/src/core/hyprlock.hpp b/src/core/hyprlock.hpp
index d21e3811..24bb2bcb 100644
--- a/src/core/hyprlock.hpp
+++ b/src/core/hyprlock.hpp
@@ -78,7 +78,8 @@ 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;
 
@@ -117,6 +118,7 @@ class CHyprlock {
         std::string                                     passBuffer = "";
         std::shared_ptr<CPassword::SVerificationResult> result;
         std::optional<std::string>                      lastFailReason;
+        std::shared_ptr<CTimer>                         emptyBufferTimer;
     } m_sPasswordState;
 
     struct {