From 1c544a663b83f9b9a792a7e255614c0ab6aa3608 Mon Sep 17 00:00:00 2001
From: Jared Boone <jboone@earfeast.com>
Date: Wed, 20 Apr 2016 10:22:05 -0700
Subject: [PATCH] Use automatic file naming for screen capture .png files.

---
 firmware/application/ui_navigation.cpp | 8 +++++++-
 1 file changed, 7 insertions(+), 1 deletion(-)

diff --git a/firmware/application/ui_navigation.cpp b/firmware/application/ui_navigation.cpp
index 2b245dd6..002a8f47 100644
--- a/firmware/application/ui_navigation.cpp
+++ b/firmware/application/ui_navigation.cpp
@@ -35,6 +35,7 @@
 
 #include "core_control.hpp"
 
+#include "file.hpp"
 #include "png_writer.hpp"
 
 namespace ui {
@@ -80,7 +81,12 @@ void SystemStatusView::set_title(const std::string new_value) {
 }
 
 void SystemStatusView::on_camera() {
-	PNGWriter png { "capture.png" };
+	const auto filename = next_filename_matching_pattern("SCR_????.PNG");
+	if( filename.empty() ) {
+		return;
+	}
+
+	PNGWriter png { filename };
 
 	for(int i=0; i<320; i++) {
 		std::array<ColorRGB888, 240> row;