From 3fbe40e2f9ca01a550c660af381030193ebfa67a Mon Sep 17 00:00:00 2001
From: Dylan Smith <dylan.ah.smith@gmail.com>
Date: Thu, 25 Feb 2010 19:15:13 -0500
Subject: [PATCH] wineconsole: Handle mouse wheel scrolling for user backend.

The mouse wheel will scroll if the buffer height is greater than the
console window's height in lines, otherwise console mouse input events
are generated.
---
 programs/wineconsole/user.c | 38 +++++++++++++++++++++++++------------
 1 file changed, 26 insertions(+), 12 deletions(-)

diff --git a/programs/wineconsole/user.c b/programs/wineconsole/user.c
index 15626d4ac3f..2c69e257f10 100644
--- a/programs/wineconsole/user.c
+++ b/programs/wineconsole/user.c
@@ -1197,9 +1197,6 @@ static LRESULT CALLBACK WCUSER_Proc(HWND hWnd, UINT uMsg, WPARAM wParam, LPARAM
     case WM_RBUTTONDBLCLK:
         WCUSER_GenerateMouseInputRecord(data, WCUSER_GetCell(data, lParam), wParam, DOUBLE_CLICK);
         break;
-    case WM_MOUSEWHEEL:
-        WCUSER_GenerateMouseInputRecord(data,  WCUSER_GetCell(data, lParam), wParam, MOUSE_WHEELED);
-	break;
     case WM_SETFOCUS:
 	if (data->curcfg.cursor_visible)
 	{
@@ -1240,19 +1237,35 @@ static LRESULT CALLBACK WCUSER_Proc(HWND hWnd, UINT uMsg, WPARAM wParam, LPARAM
             }
         }
 	break;
+    case WM_MOUSEWHEEL:
+        if (data->curcfg.sb_height <= data->curcfg.win_height)
+        {
+            WCUSER_GenerateMouseInputRecord(data,  WCUSER_GetCell(data, lParam), wParam, MOUSE_WHEELED);
+            break;
+        }
+        /* else fallthrough */
     case WM_VSCROLL:
         {
 	    int	pos = data->curcfg.win_pos.Y;
 
-	    switch (LOWORD(wParam))
-	    {
-            case SB_PAGEUP: 	pos -= 8; 		break;
-            case SB_PAGEDOWN: 	pos += 8; 		break;
-            case SB_LINEUP: 	pos--;			break;
-	    case SB_LINEDOWN: 	pos++;	 		break;
-            case SB_THUMBTRACK: pos = HIWORD(wParam);	break;
-            default: 					break;
-	    }
+            if (uMsg == WM_MOUSEWHEEL)
+            {
+                UINT scrollLines = 3;
+                SystemParametersInfoW(SPI_GETWHEELSCROLLLINES, 0, &scrollLines, 0);
+                scrollLines *= -GET_WHEEL_DELTA_WPARAM(wParam) / WHEEL_DELTA;
+                pos += scrollLines;
+            } else {
+                switch (LOWORD(wParam))
+                {
+                case SB_PAGEUP: 	pos -= 8; 		break;
+                case SB_PAGEDOWN: 	pos += 8; 		break;
+                case SB_LINEUP: 	pos--;			break;
+                case SB_LINEDOWN: 	pos++;	 		break;
+                case SB_THUMBTRACK: pos = HIWORD(wParam);	break;
+                default: 					break;
+                }
+            }
+
 	    if (pos < 0) pos = 0;
 	    if (pos > data->curcfg.sb_height - data->curcfg.win_height)
                 pos = data->curcfg.sb_height - data->curcfg.win_height;
@@ -1268,6 +1281,7 @@ static LRESULT CALLBACK WCUSER_Proc(HWND hWnd, UINT uMsg, WPARAM wParam, LPARAM
 	    }
 
         }
+        break;
     case WM_SYSCOMMAND:
 	switch (wParam)
 	{