From 822e75ec45821d848b53d74571be9fa994bd99f1 Mon Sep 17 00:00:00 2001
From: Peter Johnson <johnson.peter@gmail.com>
Date: Sun, 12 Jan 2020 01:37:53 -0800
Subject: [PATCH] Simulator GUI: Handle save file having window size=0 (#2260)

This should never happen, but if it does, it's not recoverable without
either deleting imgui.ini or editing it manually.
---
 simulation/halsim_gui/src/main/native/cpp/HALSimGui.cpp | 8 +++++++-
 1 file changed, 7 insertions(+), 1 deletion(-)

diff --git a/simulation/halsim_gui/src/main/native/cpp/HALSimGui.cpp b/simulation/halsim_gui/src/main/native/cpp/HALSimGui.cpp
index 79df3dfb05..e630e00362 100644
--- a/simulation/halsim_gui/src/main/native/cpp/HALSimGui.cpp
+++ b/simulation/halsim_gui/src/main/native/cpp/HALSimGui.cpp
@@ -1,5 +1,5 @@
 /*----------------------------------------------------------------------------*/
-/* Copyright (c) 2019 FIRST. All Rights Reserved.                             */
+/* Copyright (c) 2019-2020 FIRST. All Rights Reserved.                        */
 /* Open Source Software - may be modified and shared by FRC teams. The code   */
 /* must be accompanied by the FIRST BSD license file in the root directory of */
 /* the project.                                                               */
@@ -301,6 +301,12 @@ bool HALSimGui::Initialize() {
   // Set initial window settings
   glfwWindowHint(GLFW_MAXIMIZED, gWindowMaximized ? GLFW_TRUE : GLFW_FALSE);
 
+  if (gWindowWidth == 0 || gWindowHeight == 0) {
+    gWindowWidth = 1280;
+    gWindowHeight = 720;
+    gWindowLoadedWidthHeight = false;
+  }
+
   float windowScale = 1.0;
   if (!gWindowLoadedWidthHeight) {
     glfwWindowHint(GLFW_SCALE_TO_MONITOR, GLFW_TRUE);