From 152a95cb403c648dd7fef6c520a34f176a436362 Mon Sep 17 00:00:00 2001
From: tildearrow <tildearrow@protonmail.com>
Date: Thu, 1 Dec 2022 18:33:48 -0500
Subject: [PATCH] GUI: fix inertial scroll when power saving is on

---
 extern/imgui_patched/imgui.cpp | 3 +++
 extern/imgui_patched/imgui.h   | 1 +
 src/gui/gui.cpp                | 5 +++++
 3 files changed, 9 insertions(+)

diff --git a/extern/imgui_patched/imgui.cpp b/extern/imgui_patched/imgui.cpp
index 07928bb39..a0298a3fb 100644
--- a/extern/imgui_patched/imgui.cpp
+++ b/extern/imgui_patched/imgui.cpp
@@ -4469,6 +4469,7 @@ void ImGui::NewFrame()
     g.FramerateSecPerFrameIdx = (g.FramerateSecPerFrameIdx + 1) % IM_ARRAYSIZE(g.FramerateSecPerFrame);
     g.FramerateSecPerFrameCount = ImMin(g.FramerateSecPerFrameCount + 1, IM_ARRAYSIZE(g.FramerateSecPerFrame));
     g.IO.Framerate = (g.FramerateSecPerFrameAccum > 0.0f) ? (1.0f / (g.FramerateSecPerFrameAccum / (float)g.FramerateSecPerFrameCount)) : FLT_MAX;
+    g.IO.IsSomethingHappening = false;
 
     UpdateViewportsNewFrame();
 
@@ -6961,12 +6962,14 @@ bool ImGui::Begin(const char* name, bool* p_open, ImGuiWindowFlags flags)
             if (fabs(window->InertialScrollSpeed.x)>0.1f) {
               window->Scroll.x=window->Scroll.x+window->InertialScrollSpeed.x;
               window->InertialScrollSpeed.x*=0.95f;
+              g.IO.IsSomethingHappening = true;
             } else {
               window->InertialScrollSpeed.x=0.0f;
             }
             if (fabs(window->InertialScrollSpeed.y)>0.1f) {
               window->Scroll.y=window->Scroll.y+window->InertialScrollSpeed.y;
               window->InertialScrollSpeed.y*=0.95f;
+              g.IO.IsSomethingHappening = true;
             } else {
               window->InertialScrollSpeed.y=0.0f;
             }
diff --git a/extern/imgui_patched/imgui.h b/extern/imgui_patched/imgui.h
index afc84ebae..5359672e1 100644
--- a/extern/imgui_patched/imgui.h
+++ b/extern/imgui_patched/imgui.h
@@ -2096,6 +2096,7 @@ struct ImGuiIO
     bool        WantTextInput;                      // Mobile/console: when set, you may display an on-screen keyboard. This is set by Dear ImGui when it wants textual keyboard input to happen (e.g. when a InputText widget is active).
     bool        WantSetMousePos;                    // MousePos has been altered, backend should reposition mouse on next frame. Rarely used! Set only when ImGuiConfigFlags_NavEnableSetMousePos flag is enabled.
     bool        WantSaveIniSettings;                // When manual .ini load/save is active (io.IniFilename == NULL), this will be set to notify your application that you can call SaveIniSettingsToMemory() and save yourself. Important: clear io.WantSaveIniSettings yourself after saving!
+    bool        IsSomethingHappening;               // This is set to true when inertial scrolling is happening.
     bool        NavActive;                          // Keyboard/Gamepad navigation is currently allowed (will handle ImGuiKey_NavXXX events) = a window is focused and it doesn't use the ImGuiWindowFlags_NoNavInputs flag.
     bool        NavVisible;                         // Keyboard/Gamepad navigation is visible and allowed (will handle ImGuiKey_NavXXX events).
     float       Framerate;                          // Rough estimate of application framerate, in frame per second. Solely for convenience. Rolling average estimation based on io.DeltaTime over 120 frames.
diff --git a/src/gui/gui.cpp b/src/gui/gui.cpp
index fecd377b3..ca806a3df 100644
--- a/src/gui/gui.cpp
+++ b/src/gui/gui.cpp
@@ -3171,6 +3171,11 @@ bool FurnaceGUI::loop() {
     if (wantCaptureKeyboard) {
       WAKE_UP;
     }
+
+    if (ImGui::GetIO().IsSomethingHappening) {
+      WAKE_UP;
+    }
+
     if (ImGui::GetIO().MouseDown[0] || ImGui::GetIO().MouseDown[1] || ImGui::GetIO().MouseDown[2] || ImGui::GetIO().MouseDown[3] || ImGui::GetIO().MouseDown[4]) {
       WAKE_UP;
     }