From 94f011895c8e1bde36ee2ec235dbbcf2c994ac4c Mon Sep 17 00:00:00 2001
From: John Firebaugh <john.firebaugh@gmail.com>
Date: Fri, 10 Feb 2017 17:18:18 -0800
Subject: [core] Make Image safer

Provide Image::copy, which handles copying rectangles from a source to a destination, with thorough bounds checking.

Also fixes an indexing error in SpriteAtlas, where the top row of pixels in a wrapped image was copied from the wrong source row.
---
 include/mbgl/util/size.hpp | 4 ++++
 1 file changed, 4 insertions(+)

(limited to 'include/mbgl/util/size.hpp')

diff --git a/include/mbgl/util/size.hpp b/include/mbgl/util/size.hpp
index 1af85bcff5..79679a92fb 100644
--- a/include/mbgl/util/size.hpp
+++ b/include/mbgl/util/size.hpp
@@ -13,6 +13,10 @@ public:
     constexpr Size(const uint32_t width_, const uint32_t height_) : width(width_), height(height_) {
     }
 
+    constexpr uint32_t area() const {
+        return width * height;
+    }
+
     constexpr explicit operator bool() const {
         return width > 0 && height > 0;
     }
-- 
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