simplified focus'ing on documents. refactored scrollFocus code. changed focus in 2D to move doc into view but not center.

1 files changed, 7 insertions, 0 deletions

diff --git a/src/Utils.ts b/src/Utils.ts
index c7074c3da..061c74611 100644
--- a/src/Utils.ts
+++ b/src/Utils.ts
@@ -191,6 +191,13 @@ export namespace Utils {
         return { h: h, s: s, l: l };
     }
 
+    export function scrollIntoView(targetY: number, targetHgt: number, scrollTop: number, contextHgt: number) {
+        if (scrollTop + contextHgt < targetY + Math.max(targetHgt * 1.1, 100)) {
+            return Math.min(scrollTop, targetY + Math.max(targetHgt * 1.1, 100) - contextHgt);
+        } else if (scrollTop > targetY - targetHgt * .1) {
+            return Math.max(0, targetY - targetHgt * .1);
+        }
+    }
 
     export function clamp(n: number, lower: number, upper: number) {
         return Math.max(lower, Math.min(upper, n));