From 6f0aa766e12160d5ae3ad2238a4c4f8cc37c0823 Mon Sep 17 00:00:00 2001
From: omar <omarcornut@gmail.com>
Date: Mon, 23 Oct 2017 11:26:30 +0200
Subject: [PATCH] Nav: Added internal ImGuiNavReadMode_Released test for key
 releases.

---
 imgui.cpp | 5 ++++-
 imgui.h   | 2 +-
 2 files changed, 5 insertions(+), 2 deletions(-)

diff --git a/imgui.cpp b/imgui.cpp
index 8edb6915..92926ef5 100644
--- a/imgui.cpp
+++ b/imgui.cpp
@@ -2611,6 +2611,7 @@ enum ImGuiNavReadMode
 {
     ImGuiNavReadMode_Down,
     ImGuiNavReadMode_Pressed,
+    ImGuiNavReadMode_Released,
     ImGuiNavReadMode_Repeat,
     ImGuiNavReadMode_RepeatSlow,
     ImGuiNavReadMode_RepeatFast
@@ -2625,6 +2626,8 @@ static float GetNavInputAmount(ImGuiNavInput n, ImGuiNavReadMode mode)
     const float t = g.IO.NavInputsDownDuration[n];  // Duration pressed
     if (mode == ImGuiNavReadMode_Pressed)           // Return 1.0f when just pressed, no repeat, ignore analog input (we don't need it for Pressed logic)
         return (t == 0.0f) ? 1.0f : 0.0f;
+    if (mode == ImGuiNavReadMode_Released)           // Return 1.0f when just release, no repeat, ignore analog input (we don't need it for Pressed logic)
+        return (t < 0.0f && g.IO.NavInputsDownDurationPrev[n] >= 0.0f) ? 1.0f : 0.0f;
     if (mode == ImGuiNavReadMode_Repeat)
         return (float)ImGui::CalcTypematicPressedRepeatAmount(t, t - g.IO.DeltaTime, g.IO.KeyRepeatDelay * 0.80f, g.IO.KeyRepeatRate * 0.80f);
     if (mode == ImGuiNavReadMode_RepeatSlow)
@@ -3047,7 +3050,7 @@ void ImGui::NewFrame()
     memcpy(g.IO.KeysDownDurationPrev, g.IO.KeysDownDuration, sizeof(g.IO.KeysDownDuration));
     for (int i = 0; i < IM_ARRAYSIZE(g.IO.KeysDown); i++)
         g.IO.KeysDownDuration[i] = g.IO.KeysDown[i] ? (g.IO.KeysDownDuration[i] < 0.0f ? 0.0f : g.IO.KeysDownDuration[i] + g.IO.DeltaTime) : -1.0f;
-    memcpy(g.IO.NavInputsPrev, g.IO.NavInputs, sizeof(g.IO.NavInputs));
+    memcpy(g.IO.NavInputsDownDurationPrev, g.IO.NavInputsDownDuration, sizeof(g.IO.NavInputsDownDuration));
     for (int i = 0; i < IM_ARRAYSIZE(g.IO.NavInputs); i++)
         g.IO.NavInputsDownDuration[i] = (g.IO.NavInputs[i] > 0.0f) ? (g.IO.NavInputsDownDuration[i] < 0.0f ? 0.0f : g.IO.NavInputsDownDuration[i] + g.IO.DeltaTime) : -1.0f;
 
diff --git a/imgui.h b/imgui.h
index 76d90e70..c31fd1ff 100644
--- a/imgui.h
+++ b/imgui.h
@@ -924,7 +924,7 @@ struct ImGuiIO
     float       KeysDownDuration[512];      // Duration the keyboard key has been down (0.0f == just pressed)
     float       KeysDownDurationPrev[512];  // Previous duration the key has been down
     float       NavInputsDownDuration[ImGuiNavInput_COUNT];
-    float       NavInputsPrev[ImGuiNavInput_COUNT];
+    float       NavInputsDownDurationPrev[ImGuiNavInput_COUNT];
 
     IMGUI_API   ImGuiIO();
 };