From 778487d25a79721539cea1e47331e3c2f985c8cc Mon Sep 17 00:00:00 2001
From: Florian Fischer <florian.fischer@muhq.space>
Date: Wed, 6 Aug 2025 18:02:44 +0200
Subject: rework hover detection

---
 go/ui/hoverDetector.go | 45 +++++++++++++++++++--------------------------
 1 file changed, 19 insertions(+), 26 deletions(-)

(limited to 'go/ui/hoverDetector.go')

diff --git a/go/ui/hoverDetector.go b/go/ui/hoverDetector.go
index 49161f4f..385b2ffd 100644
--- a/go/ui/hoverDetector.go
+++ b/go/ui/hoverDetector.go
@@ -3,39 +3,32 @@ package ui
 // A simple structure to detect if the cursor has not moved or started moving again.
 // hoverDetector.update must be called during each Update invocation to track the
 // frame and the current cursor position.
-type hoverDetector struct {
+type _hoverDetector struct {
 	last_x, last_y int
 	ticks          int
-	hovering       Hoverable
 }
 
-func (h *hoverDetector) update(collection *Collection, x, y int, w Widget) {
+const HOVER_THRESHOLD = 60
+
+var (
+	hoverDetector _hoverDetector
+	longtapHoverDetector _hoverDetector
+)
+
+func (h *_hoverDetector) update(x, y int) (ev InputEvent, ch bool) {
 	if x == h.last_x && y == h.last_y {
-		h.hover(collection, x, y, w)
+		h.ticks = h.ticks + 1
+		if h.ticks == HOVER_THRESHOLD {
+			return InputEvent{HoverStart, x, y, nil}, true
+		}
 	} else {
-		h.reset(x, y)
+		if h.ticks > HOVER_THRESHOLD {
+			ev = InputEvent{HoverEnd, h.last_x, h.last_y, nil}
+			ch = true
+		}
+		h.ticks = 0
 		h.last_x, h.last_y = x, y
 	}
-}
-
-func (h *hoverDetector) hover(collection *Collection, x, y int, w Widget) {
-	h.ticks++
 
-	if w == nil || h.hovering != nil {
-		return
-	}
-
-	if hoverable, ok := w.(Hoverable); ok && hoverable.onHover(h.ticks, x, y, collection) {
-		h.hovering = hoverable
-	}
-}
-
-func (h *hoverDetector) reset(x, y int) {
-	if h.hovering != nil {
-		if !h.hovering.stopHover(h.ticks, x, y) {
-			return
-		}
-		h.hovering = nil
-	}
-	h.ticks = 0
+	return
 }
-- 
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