From a170df2b370e31043193359be0f40d48e4b3b512 Mon Sep 17 00:00:00 2001
From: Bruno Alves de Faria <brunoalvesdefaria@gmail.com>
Date: Mon, 21 Nov 2016 14:33:49 -0200
Subject: [PATCH] LT-40: Fixing issues with text box on top left position

---
 Packages/ohif-core/client/lib/cornerstone.js | 11 +++++++++++
 1 file changed, 11 insertions(+)

diff --git a/Packages/ohif-core/client/lib/cornerstone.js b/Packages/ohif-core/client/lib/cornerstone.js
index 1ce58a4aa..5b7e83262 100644
--- a/Packages/ohif-core/client/lib/cornerstone.js
+++ b/Packages/ohif-core/client/lib/cornerstone.js
@@ -38,6 +38,10 @@ OHIF.cornerstone.repositionTextBoxWhileDragging = (eventData, measurementData) =
         const handles = measurementData.handles;
         const textBox = handles.textBox;
 
+        const bounds = {};
+        bounds.x = textBox.boundingBox.width;
+        bounds.y = textBox.boundingBox.height;
+
         const getHandlePosition = key => _.pick(handles[key], ['x', 'y']);
         const start = getHandlePosition('start');
         const end = getHandlePosition('end');
@@ -74,6 +78,13 @@ OHIF.cornerstone.repositionTextBoxWhileDragging = (eventData, measurementData) =
 
         textBox[cornerAxis] = points[cornerAxis];
         textBox[toolAxis] = tool[toolAxis];
+
+        if (directions[cornerAxis] < 0) {
+            const topLeft = cornerstone.pageToPixel(element, 0, 0);
+            const bottomRight = cornerstone.pageToPixel(element, bounds.x, bounds.y);
+            const boxSize = bottomRight[cornerAxis] - topLeft[cornerAxis];
+            textBox[cornerAxis] -= boxSize;
+        }
     };
 
     const mouseUpCallback = () => {