From 98a75206bcc57df9f65337734cf59484906823e6 Mon Sep 17 00:00:00 2001
From: Sander Schobers <sander@schobers.eu>
Date: Mon, 9 Aug 2021 09:33:26 +0200
Subject: [PATCH] Add alignment to FPS control.

---
 play/fps.go | 19 +++++++++++++++++--
 1 file changed, 17 insertions(+), 2 deletions(-)

diff --git a/play/fps.go b/play/fps.go
index 3ea40d4..9b18593 100644
--- a/play/fps.go
+++ b/play/fps.go
@@ -13,6 +13,8 @@ import (
 type FPS struct {
 	ui.ControlBase
 
+	Align ui.HorizontalAlignment
+
 	update zntg.Animation
 	i      int
 	frames []int
@@ -51,6 +53,19 @@ func (f *FPS) Render(ctx ui.Context) {
 
 	font := f.font(ctx)
 	fps := fmt.Sprintf("FPS: %d", f.total)
-	ctx.Renderer().Text(font, geom.PtF32(5, 5), ctx.Style().Palette.Background, fps)
-	ctx.Renderer().Text(font, geom.PtF32(4, 4), ctx.Style().Palette.Text, fps)
+
+	renderer := ctx.Renderer()
+	switch f.Align {
+	case ui.AlignLeft:
+		ctx.Renderer().Text(font, geom.PtF32(5, 5), ctx.Style().Palette.Background, fps)
+		ctx.Renderer().Text(font, geom.PtF32(4, 4), ctx.Style().Palette.Text, fps)
+	case ui.AlignCenter:
+		center := .5 * renderer.Size().ToF32().X
+		ctx.Renderer().TextAlign(font, geom.PtF32(center, 5), ctx.Style().Palette.Background, fps, ui.AlignCenter)
+		ctx.Renderer().TextAlign(font, geom.PtF32(center+1, 4), ctx.Style().Palette.Text, fps, ui.AlignCenter)
+	case ui.AlignRight:
+		right := renderer.Size().ToF32().X - 5
+		ctx.Renderer().TextAlign(font, geom.PtF32(right, 5), ctx.Style().Palette.Background, fps, ui.AlignRight)
+		ctx.Renderer().TextAlign(font, geom.PtF32(right+1, 4), ctx.Style().Palette.Text, fps, ui.AlignRight)
+	}
 }