From 0a37ede0e789966ce4bee11e58bb3f7ecadd6141 Mon Sep 17 00:00:00 2001
From: Rob Haarsma <phaseIV@zonnet.nl>
Date: Mon, 27 Jan 2003 23:57:43 +0000
Subject: added mousewheel support

---
 source/blender/include/mydevice.h |  2 ++
 source/blender/src/filesel.c      | 34 ++++++++++++++++++++++++++++++++++
 source/blender/src/ghostwinlay.c  | 14 ++++++++++++++
 3 files changed, 50 insertions(+)

diff --git a/source/blender/include/mydevice.h b/source/blender/include/mydevice.h
index 43e42c8a49a..3bbaafd0c1a 100644
--- a/source/blender/include/mydevice.h
+++ b/source/blender/include/mydevice.h
@@ -45,6 +45,8 @@
 #define RIGHTMOUSE	0x003	
 #define MOUSEX		0x004	
 #define MOUSEY		0x005	
+#define WHEELUPMOUSE	0x00a	
+#define WHEELDOWNMOUSE	0x00b	
 
 /* timers */
 
diff --git a/source/blender/src/filesel.c b/source/blender/src/filesel.c
index 60948b8291e..d3bc996c7db 100644
--- a/source/blender/src/filesel.c
+++ b/source/blender/src/filesel.c
@@ -1153,6 +1153,27 @@ static void do_filescroll(SpaceFile *sfile)
 	
 }
 
+static void do_filescrollwheel(SpaceFile *sfile, int move)
+{
+	// by phase
+	int lines, rt;
+
+	calc_file_rcts(sfile);
+
+	lines = (int)(textrct.ymax-textrct.ymin)/FILESEL_DY;
+	rt = lines * sfile->collums;
+
+	if(sfile->totfile > rt) {
+		sfile->ofs+= move;
+		if( sfile->ofs + rt > sfile->totfile + 1)
+			sfile->ofs = sfile->totfile - rt + 1;
+	}
+
+	if(sfile->ofs<0) {
+		sfile->ofs= 0;
+	}
+}
+
 void activate_fileselect(int type, char *title, char *file, void (*func)(char *))
 {
 	SpaceFile *sfile;
@@ -1715,6 +1736,19 @@ void winqreadfilespace(unsigned short event, short val, char ascii)
 			do_filesel_buttons(val, sfile);
 			break;		
 		
+		case WHEELDOWNMOUSE:
+			do_filescrollwheel(sfile, 3); //U.wheellinescroll);
+			act= find_active_file(sfile, mval[0], mval[1]);
+			set_active_file(sfile, act);
+			do_draw= 1;
+			break;
+		case WHEELUPMOUSE:
+			do_filescrollwheel(sfile, -3); //U.wheellinescroll);
+			act= find_active_file(sfile, mval[0], mval[1]);
+			set_active_file(sfile, act);
+			do_draw= 1;
+			break;
+
 		case LEFTMOUSE:
 		case MIDDLEMOUSE:
 			if(mval[0]>scrollrct.xmin && mval[0]<scrollrct.xmax && mval[1]>scrollrct.ymin && mval[1]<scrollrct.ymax) {
diff --git a/source/blender/src/ghostwinlay.c b/source/blender/src/ghostwinlay.c
index a8863816a01..2d46de95538 100644
--- a/source/blender/src/ghostwinlay.c
+++ b/source/blender/src/ghostwinlay.c
@@ -435,6 +435,20 @@ static int event_proc(GHOST_EventHandle evt, GHOST_TUserDataPtr private) {
 			break;
 		}
 	
+		case GHOST_kEventWheel:
+		{
+			GHOST_TEventWheelData* wheelData = (GHOST_TEventWheelData*) data;
+			if (wheelData->z > 0)
+			{
+				window_handle(win, WHEELUPMOUSE, 1);
+			}
+			else
+			{
+				window_handle(win, WHEELDOWNMOUSE, 1);
+			}
+			}
+			break;
+
 		case GHOST_kEventWindowDeactivate:
 		case GHOST_kEventWindowActivate: {
 			win->active= (type==GHOST_kEventWindowActivate);
-- 
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