From 1cf90897f74f7f727710a9e61e9c835a040918bf Mon Sep 17 00:00:00 2001
From: Jeffas <dev@jeffas.io>
Date: Tue, 23 Jul 2019 20:03:14 +0100
Subject: [PATCH] Fix grid creating too large subcontexts

The grid was not checking there was enough space for the cells so would
just attempt to create subcontexts that don't actually fit.

This attempts to use the remaining space and then if there is no space
then it just skips drawing this cell.
---
 lib/ui/grid.go | 9 +++++++++
 1 file changed, 9 insertions(+)

diff --git a/lib/ui/grid.go b/lib/ui/grid.go
index 96da1cb..7f131bd 100644
--- a/lib/ui/grid.go
+++ b/lib/ui/grid.go
@@ -127,6 +127,15 @@ func (grid *Grid) Draw(ctx *Context) {
 		for _, row := range rows {
 			height += row.Size
 		}
+		if x+width > ctx.Width() {
+			width = ctx.Width() - x
+		}
+		if y+height > ctx.Height() {
+			height = ctx.Height() - y
+		}
+		if width <= 0 || height <= 0 {
+			continue
+		}
 		subctx := ctx.Subcontext(x, y, width, height)
 		cell.Content.Draw(subctx)
 	}