From d64a62866aa97ee4956332430b7cfd32f3dd4b99 Mon Sep 17 00:00:00 2001
From: Dario Manesku <dariomanesku@gmail.com>
Date: Tue, 12 Aug 2014 11:41:57 +0100
Subject: [PATCH] Imgui scroll fix for variable scrollable area height.

---
 examples/common/imgui/imgui.cpp | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/examples/common/imgui/imgui.cpp b/examples/common/imgui/imgui.cpp
index 21a8c101..2440e0c7 100644
--- a/examples/common/imgui/imgui.cpp
+++ b/examples/common/imgui/imgui.cpp
@@ -773,6 +773,10 @@ struct Imgui
 
 		if (barHeight < 1.0f)
 		{
+			// Handle m_scrollVal properly on variable scrollable area height.
+			const int32_t diff = height - sh;
+			*m_scrollVal = (*m_scrollVal < diff) ? diff : *m_scrollVal; // m_scrollVal = max(m_scrollVal, diff).
+
 			float barY = bx::fsaturate( (float)(yy - stop) / (float)sh);
 
 			// Handle scroll bar logic.