From 04e5cd70711463a8ed18cf3e796d920b0b341371 Mon Sep 17 00:00:00 2001
From: xiaoqidun <xiaoqidun@gmail.com>
Date: Fri, 11 Sep 2026 01:13:32 +0800
Subject: [PATCH] =?UTF-8?q?feat(=E5=89=8D=E7=AB=AF=E7=95=8C=E9=9D=A2):=20?=
 =?UTF-8?q?=E4=BC=98=E5=8C=96=E6=BB=9A=E5=8A=A8=E6=9D=A1=E6=A0=B7=E5=BC=8F?=
 =?UTF-8?q?=EF=BC=8C=E9=85=8D=E8=89=B2=E6=9B=B4=E8=BD=BB=E7=9B=88=E5=8D=8F?=
 =?UTF-8?q?=E8=B0=83?=
MIME-Version: 1.0
Content-Type: text/plain; charset=UTF-8
Content-Transfer-Encoding: 8bit

---
 assets/webui/ofdgo.css  |  7 +++++++
 assets/webui/ofdgo.js   |  1 +
 ofdgo_renderer_image.go | 10 ++++++----
 3 files changed, 14 insertions(+), 4 deletions(-)

diff --git a/assets/webui/ofdgo.css b/assets/webui/ofdgo.css
index 35e5cdf..689933a 100644
--- a/assets/webui/ofdgo.css
+++ b/assets/webui/ofdgo.css
@@ -285,6 +285,13 @@ body[data-hide-meta] .meta-panel {
 	display: none;
 }
 
+.page-list-panel,
+.viewer-panel,
+.meta-panel {
+	scrollbar-width: thin;
+	scrollbar-color: var(--line-strong) transparent;
+}
+
 .page-list-panel,
 .meta-panel {
 	min-height: 0;
diff --git a/assets/webui/ofdgo.js b/assets/webui/ofdgo.js
index b17c3bf..b50c336 100644
--- a/assets/webui/ofdgo.js
+++ b/assets/webui/ofdgo.js
@@ -2517,6 +2517,7 @@ function scrollbarWidth() {
 	probe.style.width = "100px";
 	probe.style.height = "100px";
 	probe.style.overflow = "scroll";
+	probe.style.scrollbarWidth = getComputedStyle(el.viewerPanel).scrollbarWidth;
 	probe.style.left = "-9999px";
 	document.body.append(probe);
 	const width = probe.offsetWidth - probe.clientWidth;
diff --git a/ofdgo_renderer_image.go b/ofdgo_renderer_image.go
index e0f6ad6..a09fb2f 100644
--- a/ofdgo_renderer_image.go
+++ b/ofdgo_renderer_image.go
@@ -310,13 +310,15 @@ func imageWithTransparentEdge(img image.Image) (image.Image, int) {
 	src, ok := source.(*image.NRGBA)
 	if ok {
 		srcBounds := src.Bounds()
+		hasZero = src.Pix[3] == 0
+		hasVisible = !hasZero
+	scan:
 		for y := srcBounds.Min.Y; y < srcBounds.Max.Y; y++ {
 			offset := src.PixOffset(srcBounds.Min.X, y) + 3
 			for x := 0; x < w; x++ {
-				if src.Pix[offset] == 0 {
-					hasZero = true
-				} else {
-					hasVisible = true
+				if (src.Pix[offset] == 0) != hasZero {
+					hasZero, hasVisible = true, true
+					break scan
 				}
 				offset += 4
 			}