From fa4384640ec1f5f6af73a6c85043aeafc806466c Mon Sep 17 00:00:00 2001
From: ragnarok-clanker <ragnarok-clanker>
Date: Wed, 28 Oct 2026 21:46:47 +0000
Subject: [PATCH] Decompile fn_04158 (UILapineScrollBar::Paint)

Batch #1730 by ragnarok-clanker: 0 byte-identical, 1 confirmed by peer review.

- fn_04158 UILapineScrollBar::Paint: logic confirmed by peer review

Reviewed-by: ragnarok-clanker
---
 Source/UI/UILapineScrollBar.cpp | 70 +++++++++++++++++++++++++++++++++
 Source/UI/UILapineScrollBar.h   | 11 ++++++
 2 files changed, 81 insertions(+)
 create mode 100644 Source/UI/UILapineScrollBar.h

diff --git a/Source/UI/UILapineScrollBar.cpp b/Source/UI/UILapineScrollBar.cpp
index b0c5d19..eb46b8a 100644
--- a/Source/UI/UILapineScrollBar.cpp
+++ b/Source/UI/UILapineScrollBar.cpp
@@ -1,4 +1,9 @@
 #include "UI/UIIngredientInfoWnd.h"
+#include "UI/UILapineScrollBar.h"
+
+#include "Resource/Bitmap/BitmapResource.h"
+#include "Resource/ResourceMgr.h"
+#include "Resource/TextureNames.h"
 
 // OFFSET: 0x005FF810
 // FUNCTION: fn_04149
@@ -11,3 +16,68 @@ void UIIngredientInfoWnd::Slot10(int argument1, int argument2, std::intptr_t arg
 void UIIngredientInfoWnd::Move(int x, int y) {
   UIWindow::Move(x, y);
 }
+
+// OFFSET: 0x00600270
+// FUNCTION: fn_04158
+void UILapineScrollBar::Paint() {
+  const auto load = [](const char* name) {
+    return static_cast<CBitmapRes*>(ResourceMgr::Instance().Load(Resolve(name)));
+  };
+  this->ClearSurface(0xFFFF00FF);
+  if (this->maximum == 0) {
+    return;
+  }
+
+  if (this->vertical == 1) {
+    CBitmapRes* top = load("유저인터페이스\\lapine\\scrollbar_bg_top.bmp");
+    CBitmapRes* bottom = load("유저인터페이스\\lapine\\scrollbar_bg_btm.bmp");
+    CBitmapRes* middle = load("유저인터페이스\\lapine\\scrollbar_bg_mid.bmp");
+    this->DrawBitmap(0, 0, &top->image, true);
+
+    const int interior = this->geometry.height - bottom->image.height - top->image.height;
+    const int count = interior / middle->image.height + (interior % middle->image.height != 0);
+    for (int index = 0; index < count; ++index) {
+      this->DrawBitmap(0, middle->image.height * index + top->image.height, &middle->image, true);
+    }
+    this->DrawBitmap(0, this->geometry.height - bottom->image.height, &bottom->image, true);
+
+    const int travel = this->geometry.height - bottom->image.height - top->image.height;
+    const int thumbLength = this->visible * travel / this->total;
+    const int thumbOffset = this->position * travel / this->total;
+
+    const char* thumbTop;
+    const char* thumbBottom;
+    const char* thumbMiddle;
+    if (this->state == 0) {
+      thumbTop = "유저인터페이스\\lapine\\scrollbar_thumb_out_top.bmp";
+      thumbBottom = "유저인터페이스\\lapine\\scrollbar_thumb_out_btm.bmp";
+      thumbMiddle = "유저인터페이스\\lapine\\scrollbar_thumb_out_mid.bmp";
+    } else if (this->state == 3) {
+      thumbTop = "유저인터페이스\\lapine\\scrollbar_thumb_over_top.bmp";
+      thumbBottom = "유저인터페이스\\lapine\\scrollbar_thumb_over_btm.bmp";
+      thumbMiddle = "유저인터페이스\\lapine\\scrollbar_thumb_over_mid.bmp";
+    } else if (this->state == 6) {
+      thumbTop = "유저인터페이스\\lapine\\scrollbar_thumb_press_top.bmp";
+      thumbBottom = "유저인터페이스\\lapine\\scrollbar_thumb_press_btm.bmp";
+      thumbMiddle = "유저인터페이스\\lapine\\scrollbar_thumb_press_mid.bmp";
+    } else {
+      this->minimumThumb = 0;
+      this->parent->Invalidate();
+      return;
+    }
+
+    CBitmapRes* capTop = load(thumbTop);
+    CBitmapRes* capBottom = load(thumbBottom);
+    CBitmapRes* fill = load(thumbMiddle);
+    const int span = thumbLength - capBottom->image.height - capTop->image.height;
+    const int pieces = span / fill->image.height + (span % fill->image.height != 0);
+    for (int index = 0; index < pieces; ++index) {
+      this->DrawBitmap(0, fill->image.height * index + thumbOffset + capTop->image.height + top->image.height, &fill->image, true);
+    }
+    this->DrawBitmap(0, top->image.height + thumbOffset, &capTop->image, true);
+    this->DrawBitmap(0, thumbOffset - capBottom->image.height + thumbLength + top->image.height, &capBottom->image, true);
+  }
+
+  this->minimumThumb = 0;
+  this->parent->Invalidate();
+}
diff --git a/Source/UI/UILapineScrollBar.h b/Source/UI/UILapineScrollBar.h
new file mode 100644
index 0000000..8d6338e
--- /dev/null
+++ b/Source/UI/UILapineScrollBar.h
@@ -0,0 +1,11 @@
+#ifndef RAGNAROK_SOURCE_UI_UILAPINESCROLLBAR_H
+#define RAGNAROK_SOURCE_UI_UILAPINESCROLLBAR_H
+
+#include "UI/Lists/UIScrollBar.h"
+
+class UILapineScrollBar : public UIScrollBar {
+public:
+  void Paint() override;
+};
+
+#endif