From 2a233c2fec2278610173b27605cad5232ed26609 Mon Sep 17 00:00:00 2001
From: Přemysl Eric Janouch <p@janouch.name>
Date: Sun, 10 Nov 2024 21:10:05 +0100
Subject: WIP: xA: fix buffer position indicator

---
 xA/xA.go | 23 ++++++++++++++++-------
 1 file changed, 16 insertions(+), 7 deletions(-)

(limited to 'xA/xA.go')

diff --git a/xA/xA.go b/xA/xA.go
index f61102e..2357711 100644
--- a/xA/xA.go
+++ b/xA/xA.go
@@ -219,6 +219,7 @@ var (
 	wRichText   *widget.RichText
 	wRichScroll *container.Scroll
 	wPrompt     *widget.Label
+	wDown       *widget.Icon
 	wStatus     *widget.Label
 	wEntry      *customEntry
 )
@@ -323,8 +324,8 @@ func bufferToggleUnimportant(name string) {
 // --- Current buffer ----------------------------------------------------------
 
 func bufferAtBottom() bool {
-	// TODO(p): Figure out how to implement this.
-	return false
+	return wRichScroll.Offset.Y >=
+		wRichScroll.Content.Size().Height-wRichScroll.Size().Height
 }
 
 func bufferScrollToBottom() {
@@ -396,12 +397,13 @@ func refreshPrompt() {
 }
 
 func refreshStatus() {
-	var status string
-	if !bufferAtBottom() {
-		status += "🡇 "
+	if bufferAtBottom() {
+		wDown.Hide()
+	} else {
+		wDown.Show()
 	}
 
-	status += bufferCurrent
+	status := bufferCurrent
 	if b := bufferByName(bufferCurrent); b != nil {
 		if b.modes != "" {
 			status += "(+" + b.modes + ")"
@@ -1119,9 +1121,14 @@ func main() {
 
 	wTopic = widget.NewRichText()
 	wTopic.Truncation = fyne.TextTruncateEllipsis
+
 	wRichText = widget.NewRichText()
 	wRichText.Wrapping = fyne.TextWrapWord
 	wRichScroll = container.NewVScroll(wRichText)
+	wRichScroll.OnScrolled = func(position fyne.Position) {
+		refreshStatus()
+	}
+
 	wPrompt = widget.NewLabelWithStyle(
 		"", fyne.TextAlignLeading, fyne.TextStyle{Bold: true})
 	wStatus = widget.NewLabelWithStyle(
@@ -1140,9 +1147,11 @@ func main() {
 		wTopic,
 		widget.NewSeparator(),
 	)
+	wDown = widget.NewIcon(theme.MoveDownIcon())
 	bottom := container.NewVBox(
 		widget.NewSeparator(),
-		container.NewBorder(nil, nil, wPrompt, wStatus),
+		container.NewBorder(nil, nil,
+			wPrompt, container.NewHBox(wDown, wStatus)),
 		wEntry,
 	)
 	split := container.NewHSplit(wBufferList, wRichScroll)
-- 
cgit v1.2.3-70-g09d2