From 7d283335d4e0a84c191314c299af70152eec9a77 Mon Sep 17 00:00:00 2001
From: Simon Robertshaw <simon@hardwired.org.uk>
Date: Sat, 20 Aug 2011 00:08:49 +0100
Subject: [PATCH] Menu scrolling for 'special' menu

---
 src/interface.c | 42 ++++++++++++++++++++++--------------------
 1 file changed, 22 insertions(+), 20 deletions(-)

diff --git a/src/interface.c b/src/interface.c
index 939699b37..5679a5fee 100644
--- a/src/interface.c
+++ b/src/interface.c
@@ -92,7 +92,7 @@ void menu_count(void)//puts the number of elements in each section into .itemcou
 	int i=0;
 	msections[SC_LIFE].itemcount = NGOLALT;
 	msections[SC_WALL].itemcount = UI_WALLCOUNT-4;
-	msections[SC_SPECIAL].itemcount = 4;
+	msections[SC_SPECIAL].itemcount = 7;
 	for (i=0; i<PT_NUM; i++)
 	{
 		msections[ptypes[i].menusection].itemcount+=ptypes[i].menu;
@@ -1948,6 +1948,10 @@ void menu_ui_v3(pixel *vid_buf, int i, int *sl, int *sr, int *dae, int b, int bq
 	}
 	else if (i==SC_SPECIAL)//special menu
 	{
+		if (fwidth > XRES-BARSIZE) { //fancy scrolling
+			float overflow = fwidth-(XRES-BARSIZE), location = ((float)XRES-BARSIZE)/((float)(mx-(XRES-BARSIZE)));
+			xoff = (int)(overflow / location);
+		}
 		for (n = UI_WALLSTART; n<UI_WALLSTART+UI_WALLCOUNT; n++)
 		{
 			if (n==SPC_AIR||n==SPC_HEAT||n==SPC_COOL||n==SPC_VACUUM||n==SPC_WIND||n==SPC_PGRV||n==SPC_NGRV)
@@ -1957,28 +1961,28 @@ void menu_ui_v3(pixel *vid_buf, int i, int *sl, int *sr, int *dae, int b, int bq
 					x = XRES-BARSIZE-18;
 					y += 19;
 				}*/
-				x -= draw_tool_xy(vid_buf, x, y, n, wtypes[n-UI_WALLSTART].colour)+5;
-				if (!bq && mx>=x+32 && mx<x+58 && my>=y && my< y+15)
+				x -= draw_tool_xy(vid_buf, x-xoff, y, n, wtypes[n-UI_WALLSTART].colour)+5;
+				if (!bq && mx>=x+32-xoff && mx<x+58-xoff && my>=y && my< y+15)
 				{
-					drawrect(vid_buf, x+30, y-1, 29, 17, 255, 55, 55, 255);
+					drawrect(vid_buf, x+30-xoff, y-1, 29, 17, 255, 55, 55, 255);
 					h = n;
 				}
-				if (!bq && mx>=x+32 && mx<x+58 && my>=y && my< y+15&&(sdl_mod & (KMOD_LALT) && sdl_mod & (KMOD_CTRL)))
+				if (!bq && mx>=x+32-xoff && mx<x+58-xoff && my>=y && my< y+15&&(sdl_mod & (KMOD_LALT) && sdl_mod & (KMOD_CTRL)))
 				{
-					drawrect(vid_buf, x+30, y-1, 29, 17, 0, 255, 255, 255);
+					drawrect(vid_buf, x+30-xoff, y-1, 29, 17, 0, 255, 255, 255);
 					h = n;
 				}
 				else if (n==SLALT)
 				{
-					drawrect(vid_buf, x+30, y-1, 29, 17, 0, 255, 255, 255);
+					drawrect(vid_buf, x+30-xoff, y-1, 29, 17, 0, 255, 255, 255);
 				}
 				else if (n==*sl)
 				{
-					drawrect(vid_buf, x+30, y-1, 29, 17, 255, 55, 55, 255);
+					drawrect(vid_buf, x+30-xoff, y-1, 29, 17, 255, 55, 55, 255);
 				}
 				else if (n==*sr)
 				{
-					drawrect(vid_buf, x+30, y-1, 29, 17, 55, 55, 255, 255);
+					drawrect(vid_buf, x+30-xoff, y-1, 29, 17, 55, 55, 255, 255);
 				}
 			}
 		}
@@ -1991,28 +1995,28 @@ void menu_ui_v3(pixel *vid_buf, int i, int *sl, int *sr, int *dae, int b, int bq
 					x = XRES-BARSIZE-18;
 					y += 19;
 				}*/
-				x -= draw_tool_xy(vid_buf, x, y, n, ptypes[n].pcolors)+5;
-				if (!bq && mx>=x+32 && mx<x+58 && my>=y && my< y+15)
+				x -= draw_tool_xy(vid_buf, x-xoff, y, n, ptypes[n].pcolors)+5;
+				if (!bq && mx>=x+32-xoff && mx<x+58-xoff && my>=y && my< y+15)
 				{
-					drawrect(vid_buf, x+30, y-1, 29, 17, 255, 55, 55, 255);
+					drawrect(vid_buf, x+30-xoff, y-1, 29, 17, 255, 55, 55, 255);
 					h = n;
 				}
-				if (!bq && mx>=x+32 && mx<x+58 && my>=y && my< y+15&&(sdl_mod & (KMOD_LALT) && sdl_mod & (KMOD_CTRL)))
+				if (!bq && mx>=x+32-xoff && mx<x+58-xoff && my>=y && my< y+15&&(sdl_mod & (KMOD_LALT) && sdl_mod & (KMOD_CTRL)))
 				{
-					drawrect(vid_buf, x+30, y-1, 29, 17, 0, 255, 255, 255);
+					drawrect(vid_buf, x+30-xoff, y-1, 29, 17, 0, 255, 255, 255);
 					h = n;
 				}
 				else if (n==SLALT)
 				{
-					drawrect(vid_buf, x+30, y-1, 29, 17, 0, 255, 255, 255);
+					drawrect(vid_buf, x+30-xoff, y-1, 29, 17, 0, 255, 255, 255);
 				}
 				else if (n==*sl)
 				{
-					drawrect(vid_buf, x+30, y-1, 29, 17, 255, 55, 55, 255);
+					drawrect(vid_buf, x+30-xoff, y-1, 29, 17, 255, 55, 55, 255);
 				}
 				else if (n==*sr)
 				{
-					drawrect(vid_buf, x+30, y-1, 29, 17, 55, 55, 255, 255);
+					drawrect(vid_buf, x+30-xoff, y-1, 29, 17, 55, 55, 255, 255);
 				}
 			}
 		}
@@ -5470,7 +5474,7 @@ void catalogue_ui(pixel * vid_buf)
 	int listy = 0, listxc;
 	int listx = 0, listyc;
 	pixel * vid_buf2;
-	float scrollvel = 0.0f, offsetf = 0.0f;
+	float scrollvel, offsetf = 0.0f;
 	char savetext[128] = "";
 	char * last = mystrdup("");
 	savelist_e *saves, *cssave, *csave;
@@ -5687,8 +5691,6 @@ openfin:
 
 	if(saves)
 		free_saveslist(saves);
-	free(last);
-	free(vid_buf2);
 	return;
 }