From 140dd2bd8a3db711a9dbced71545b070a2a146ee Mon Sep 17 00:00:00 2001
From: ozlb <ozlb@users.noreply.github.com>
Date: Mon, 13 Jul 2020 06:44:51 +0200
Subject: [PATCH] IsPlotItemHighlight

Returns true if plot item is highlight
---
 implot.cpp | 16 +++++++++++++++-
 implot.h   |  2 ++
 2 files changed, 17 insertions(+), 1 deletion(-)

diff --git a/implot.cpp b/implot.cpp
index e15342e..0e2456b 100644
--- a/implot.cpp
+++ b/implot.cpp
@@ -195,7 +195,10 @@ inline T Remap(T x, T x0, T x1, T y0, T y1) {
 
 // Returns always positive modulo
 inline int PosMod(int l, int r) {
-    return (l % r + r) % r;
+	if (r == 0) 
+		return 0;
+    else
+		return (l % r + r) % r;
 }
 
 // Returns the intersection point of two lines A and B (assumes they are not parallel!)
@@ -1935,6 +1938,17 @@ ImPlotLimits GetPlotQuery(int y_axis_in) {
     return result;
 }
 
+bool IsPlotItemHighlight(const char* label_id) {
+    IM_ASSERT_USER_ERROR(gp.CurrentPlot != NULL, "IsPlotItemHighlight() needs to be called between BeginPlot() and EndPlot()!");
+
+	ImGuiID id = ImGui::GetID(label_id);
+    ImPlotItem* item = gp.CurrentPlot->Items.GetOrAddByKey(id);
+	if (item && item->Highlight)
+		return true;
+	else
+		return false;
+}
+
 //-----------------------------------------------------------------------------
 // STYLING
 //-----------------------------------------------------------------------------
diff --git a/implot.h b/implot.h
index b56455e..a13e625 100644
--- a/implot.h
+++ b/implot.h
@@ -298,6 +298,8 @@ ImPlotLimits GetPlotLimits(int y_axis = -1);
 bool IsPlotQueried();
 // Returns the current or most recent plot query bounds.
 ImPlotLimits GetPlotQuery(int y_axis = -1);
+// Returns true if plot item is highlight
+bool IsPlotItemHighlight(const char* label_id);
 
 //-----------------------------------------------------------------------------
 // Plot Input Mapping