1 /************************************************************************
2 * This file is part of Wizznic. *
3 * Copyright 2009-2015 Jimmy Christensen <dusted@dusted.dk> *
4 * Wizznic is free software: you can redistribute it and/or modify *
5 * it under the terms of the GNU General Public License as published by *
6 * the Free Software Foundation, either version 3 of the License, or *
7 * (at your option) any later version. *
8 * *
9 * Wizznic is distributed in the hope that it will be useful, *
10 * but WITHOUT ANY WARRANTY; without even the implied warranty of *
11 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the *
12 * GNU General Public License for more details. *
13 * *
14 * You should have received a copy of the GNU General Public License *
15 * along with Wizznic. If not, see <http://www.gnu.org/licenses/>. *
16 ************************************************************************/
17
18 #include <math.h>
19 #include "defs.h"
20 #include "sprite.h"
21 #include "scrollbar.h"
22 #include "pointer.h"
23 #include "ticks.h"
24
25 static int sbCur;
26
27 static int dirCntDwn;
28
29 static spriteType* scrollBarGfx[4];
30
scrollBarInit()31 void scrollBarInit()
32 {
33 sbCur=0;
34 dirCntDwn=0;
35 scrollBarGfx[0] = cutSprite(loadImg(DATADIR"data/menu/scrollbar.png"),0,0,19,186);
36 scrollBarGfx[1] = cutSprite(scrollBarGfx[0]->img,0,186,17,3);
37 scrollBarGfx[2] = cutSprite(scrollBarGfx[0]->img,0,186+3,11,8);
38 scrollBarGfx[3] = cutSprite(scrollBarGfx[0]->img,0,186+3+8,11,8);
39 }
40
41 //Returns current position if a change happened, or -1 if nothing happened.
42 //size is the number of items in the list, current is the currently selected item.
scrollBar(SDL_Surface * screen,int x,int y,float size,int current,int chdir)43 int scrollBar(SDL_Surface* screen, int x, int y, float size, int current, int chdir)
44 {
45 SDL_Rect r;
46 int retVal=-1;
47
48 if( chdir < 0 )
49 {
50 dirCntDwn = -120;
51 } else if( chdir > 0 )
52 {
53 dirCntDwn = 120;
54 }
55
56 drawSprite(screen, scrollBarGfx[0], x, y);
57
58 //Draw indicator
59 drawSprite(screen, scrollBarGfx[1], x+1,y+18+round(147.0/size*(float)current) );
60
61 //Check for mouse hover over buttons
62 r.x = x;
63 r.w = r.x+18;
64 r.y = y;
65 r.h = r.y+18;
66 if( (isPointerInBox(&r) && current > 0) || dirCntDwn < 0)
67 {
68 drawSprite(screen, scrollBarGfx[2], r.x+4, r.y+6 );
69 if(isPointerClicked())
70 {
71 retVal=current-1;
72 }
73 }
74 //Check for mouse hover over buttons
75 r.y = y+167;
76 r.h = r.y+18;
77 if( (isPointerInBox(&r) && current < size) || dirCntDwn > 0 )
78 {
79 drawSprite(screen, scrollBarGfx[3], r.x+4, r.y+5 );
80 if(isPointerClicked())
81 {
82 retVal=current+1;
83 }
84 }
85
86 r.y = y+16;
87 r.h = r.y+152;
88 if( isPointerInBox(&r) && getInpPointerState()->isDown )
89 {
90 retVal=(int)round( size/150.0 * (float)(getInpPointerState()->vpY-(r.y)));
91 }
92
93 if(dirCntDwn < 0 )
94 {
95 dirCntDwn += getTicks();
96 if( dirCntDwn > 0 )
97 {
98 dirCntDwn=0;
99 }
100 } else if(dirCntDwn > 0)
101 {
102 dirCntDwn -= getTicks();
103 if(dirCntDwn < 0 )
104 {
105 dirCntDwn=0;
106 }
107 }
108
109 return(retVal);
110 }
111
