diff options
Diffstat (limited to 'src/Utils.ts')
-rw-r--r-- | src/Utils.ts | 7 |
1 files changed, 7 insertions, 0 deletions
diff --git a/src/Utils.ts b/src/Utils.ts index c7074c3da..b6a59118a 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 + targetHgt * 1.1) { + return Math.ceil(targetY + targetHgt * 1.1 - contextHgt); + } else if (scrollTop > targetY - targetHgt * .1) { + return Math.max(0, Math.floor(targetY - targetHgt * .1)); + } + } export function clamp(n: number, lower: number, upper: number) { return Math.max(lower, Math.min(upper, n)); |