Scrollbars

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SoCoder -> Snippet Home -> Text and GUI's

mike_g	Created : 04 March 2007 Scrollbars
Heres a pair of functions I posted on dev-crunch. But since its gone i figured i may as well put em here. Once function does a vertical scrollbar, the other a horizontal one. They work pretty much perfectly as long as you dont use more than one of each type at a time. Oh and they are not exactly very nice to look at either. ;------------------------------------------------------------------------------------------------------- Graphics 1024, 768 SetBuffer BackBuffer() Global scroll_h#, scroll_v#, grab_bar ClsColor 30,20, 10 ;----------------------------------------------------------------------------------------------------- While quit = 0 Cls BACKGROUND() Color 160, 160, 110 SCROLLBAR_V(200,0, 16, 200, 1200) SCROLLBAR_H(0, 200, 200, 16, 800) CURSOR() Flip If KeyHit(1) Then quit = 1 Wend End ;----------------------------------------------------------------------------------------------------- Function CURSOR() Color 255, 255, 255 Rect MouseX(), MouseY(), 3, 3 End Function ;----------------------------------------------------------------------------------------------------- Function BACKGROUND() Viewport 0, 0, 200, 200 For i = 0 To 800 Color R, G, B Line 0+i-scroll_h#, 0-scroll_v#, 0+i-scroll_h# , 1200-scroll_v# If G < 200 And set1 = 0 If R > 0 Then R = R - 1 G = G + 1 Else If B < 200 And set2 = 0 If G > 1 Then G = G - 1 B = B + 1 set1 = 1 Else If R < 200 If B > 1 Then B = B - 1 R = R + 1 set2 = 1 Else set1 = 0 set2 = 0 EndIf Next Color 0, 0, 0 For i = 0 To 1600 Step 10 Color D, D, D Text 2-scroll_h, i-scroll_v,"SCROLLING SCROLLING SCROLLING SCROLLING SCROLLING SCROLLING SCROLLING SCROLLING SCROLLING SCROLLING" D = D + 10 Next Viewport 0, 0, 1024, 768 End Function ;----------------------------------------------------------------------------------------------------- Function SCROLLBAR_V(x_pos, y_pos, bar_w, bar_h, list_l#) slider_l# = bar_h - (2 * bar_w) bar_percent# = 100 / (list_l# / slider_l#) slider_div# = slider_l# / 100 bar_height# = bar_percent# * slider_div# slide_spd# = (scroll_v# * ((slider_l# - bar_height#)/(list_l# -bar_h))) If MouseDown(1) And grab_bar = 0 If MouseX() > x_pos And MouseX() < x_pos + bar_w If MouseY() > y_pos And MouseY() < y_pos + bar_w If scroll_v# > 0 Then scroll_v# = scroll_v# - 2 Else If MouseY() > y_pos +(bar_h - bar_w) And MouseY() < y_pos + bar_h If scroll_v# < list_l# - bar_h Then scroll_v# = scroll_v# + 2 Else If MouseY() > y_pos + slide_spd# +bar_w And MouseY() < y_pos+slide_spd#+bar_w+bar_height# grab_bar = 1 EndIf EndIf EndIf If grab_bar = 1 old_y = MouseY() Delay 20 diff# = MouseY() - old_y drag_slider# = diff# * (list_l# / slider_l#) If scroll_v# >= 0 And scroll_v# < list_l# If scroll_v# + drag_slider# < 0 scroll_v# = 0 Else If scroll_v# + drag_slider# > list_l# -bar_h scroll_v# = list_l# - bar_h Else scroll_v# = scroll_v# + drag_slider# EndIf EndIf EndIf If Not MouseDown(1) Then grab_bar = 0 Color 0, 0, 0 Rect x_pos, y_pos, bar_w, bar_h For i = 0 To 1 Color 20, 20, 20 Rect x_pos, y_pos+(i * (slider_l# +bar_w)), bar_w, bar_w Color 80, 80, 80 Rect x_pos+1, y_pos+(i * (slider_l# +bar_w)), bar_w-1, bar_w-1 Color 50, 50, 50 Rect x_pos+1, y_pos+1+(i * (slider_l# +bar_w)), bar_w-2, bar_w-2 Next For z = 0 To (bar_w / 2) - (bar_w / 4) Color 140, 40, 40 Rect x_pos+(bar_w/2) - 1 -z, y_pos +(bar_w / 4)-1 +(z2) , 2 +(z2), 2 Rect x_pos+(bar_w/2) - 1 -z, y_pos +bar_h -(bar_w / 4)-1 -(z2), 2 +(z2), 2 Next Color 50, 50, 50 Rect x_pos+1, y_pos + bar_w +slide_spd#+1, bar_w-2, bar_height#-2 Color 120, 120, 120 Rect x_pos+2, y_pos + bar_w +slide_spd#+1, bar_w-3, bar_height#-3 Color 80, 80, 80 Rect x_pos+2, y_pos+2 + bar_w +slide_spd#, bar_w-4, bar_height#-4 Color 140, 40, 40 Rect x_pos+5, y_pos+5 + bar_w +slide_spd#, bar_w-10, bar_height#-10 End Function ;----------------------------------------------------------------------------------------------------- Function SCROLLBAR_H(x_pos, y_pos, bar_w, bar_h, list_l#) slider_l# = bar_w - (2 * bar_h) bar_percent# = 100 / (list_l# / slider_l#) slider_div# = slider_l# / 100 bar_height# = bar_percent# * slider_div# slide_spd# = (scroll_h# * ((slider_l# - bar_height#)/(list_l# -bar_w))) If MouseDown(1) And grab_bar = 0 If MouseY() > y_pos And MouseY() < y_pos + bar_h If MouseX() > x_pos And MouseX() < x_pos + bar_h If scroll_h# > 0 Then scroll_h# = scroll_h# - 2 Else If MouseX() > x_pos +(bar_w - bar_h) And MouseX() < x_pos + bar_w If scroll_h# < list_l# - bar_w Then scroll_h# = scroll_h# + 2 Else If MouseX() > x_pos + slide_spd# +bar_h And MouseX() < x_pos+slide_spd#+bar_h+bar_height# grab_bar = 2 EndIf EndIf EndIf If grab_bar = 2 old_x = MouseX() Delay 20 diff# = MouseX() - old_x drag_slider# = diff# * (list_l# / slider_l#) If scroll_h# >= 0 And scroll_h# < list_l# If scroll_h# + drag_slider# < 0 scroll_h# = 0 Else If scroll_h# + drag_slider# > list_l# -bar_w scroll_h# = list_l# - bar_w Else scroll_h# = scroll_h# + drag_slider# EndIf EndIf EndIf If Not MouseDown(1) Then grab_bar = 0 Color 60, 60, 50 Rect x_pos, y_pos, bar_w, bar_h Color 160, 160, 110 Rect x_pos, y_pos, bar_h, bar_h Rect x_pos +(slider_l# +bar_h), y_pos , bar_h, bar_h Color 110, 160, 160 Rect x_pos + bar_h +slide_spd#, y_pos , bar_height#, bar_h End Function --v

Comments
Sunday, 04 March 2007, 13:08
shroom_monk	Pretty good, except that when you try to drag one of the bars, it doesn't move at the same speed as the mouse.
Sunday, 04 March 2007, 13:30
garand	yes
Sunday, 04 March 2007, 16:24
steve_ancell	I've been playing around with this sort of stuff for a few days. You will need to provide your own image for the mouse pointer. The get_slider_value(id$) function returns a number between 0 & 100, which represent a percentage of the slider. To get the names of the bars, look at the function create_slider_bars(). Global graphics_w=640,graphics_h=480 Graphics graphics_w,graphics_h Type slider_bar Field x#,y# Field w#,h# Field window_id Field id$ Field bar_type Field potential# Field slider_x# Field slider_y# End Type Type button Field x,y Field w,h Field func$ Field frame End Type Type cell Field x,y Field w,h Field frame Field frames Field frame_sequence Field frame_time_begin Field frame_time_end Field frame_hold Field solid End Type Type brush Field x,y Field w,h Field frame Field frames Field frame_sequence Field frame_time_begin Field frame_time_end Field frame_hold Field solid End Type ;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;; Global pointer=LoadImage("pointer.bmp") MaskImage pointer,255,0,255 ;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;; ;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;; Dim map.cell(0,0) Global map_w=0,map_h=0 Global map_win_x=0,map_win_y=0 Global map_win_w=0,map_win_h=0 Global map_cam_x=0,map_cam_y=0 Dim tile(0,0) Global tile_win_x=0,tile_win_y=0 Global tile_win_w=0,tile_win_h=0 Global tile_cam_x=0,tile_cam_y=0 Global tile_w=32,tile_h=32 Global tile_graphics=CreateImage(tile_w,tile_h,1) Global window=1 ;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;; SetBuffer BackBuffer() editor_settings() default_tile_settings() default_map_settings() create_slider_bars() Repeat Cls If window=1 Then map_mode() Color 255,0,0 draw_pointer() Flip Until KeyHit(1) End ;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;; Function editor_settings() ClsColor 255,255,255 End Function Function map_mode() draw_map() draw_slider_bars() End Function Function draw_pointer() DrawImage pointer,MouseX(),MouseY() End Function Function default_tile_settings() tile_w=32 tile_h=32 tile_win_x=0 tile_win_y=0 tile_win_w=tile_w tile_win_h=tile_h tile_cam_x=0 tile_cam_y=0 tile_graphics=CreateImage(tile_w,tile_h,1) End Function Function default_map_settings() map_w=graphics_w/tile_w map_h=graphics_h/tile_h map_win_x=0 map_win_y=0 map_win_w=graphics_w-tile_w map_win_h=graphics_h-tile_h map_cam_x=0 map_cam_y=0 Dim map.cell(map_w,map_h) count=0 For y=0 To map_h-1 For x=0 To map_w-1 map.cell(x,y)=New cell map(x,y)\frame=count count=count+1 Next Next End Function Function draw_map() xstart=map_win_x ystart=map_win_y y=ystart For row=map_cam_y To map_h-1 x=xstart For column=map_cam_x To map_w-1 Color 0,0,0 Rect(x,y,tile_w,tile_h,0) Text(x,y,map(column,row)\frame) x=x+tile_w If x=>map_win_x+map_win_w Then Exit Next y=y+tile_h If y=>map_win_y+map_win_h Then Exit Next Color 255,0,0 Rect map_win_x,map_win_y,map_win_w,map_win_h,0 End Function Function create_slider_bars() s.slider_bar=New slider_bar s\id$="map_horizontal" s\bar_type=1 s\window_id=1 s\w=map_win_w s\h=16 s\x=map_win_x s\y=(map_win_y+map_win_h) s\slider_x=s\x s\slider_y=s\y ;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;; s.slider_bar=New slider_bar s\id$="map_vertical" s\bar_type=2 s\window_id=1 s\w=16 s\h=map_win_h s\x=(map_win_x+map_win_w) s\y=map_win_y s\slider_x=s\x s\slider_y=s\y ;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;; End Function Function draw_slider_bars() For s.slider_bar=Each slider_bar If s\window_id=window Color(0,0,255) Rect(s\x,s\y,s\w,s\h,1) If s\bar_type=1 Color 0,255,0 Rect(s\slider_x,s\slider_y,4,s\h,1) EndIf If s\bar_type=2 Color 0,255,0 Rect(s\slider_x,s\slider_y,s\w,4,1) EndIf EndIf Next move_sliders() End Function Function move_sliders() For s.slider_bar=Each slider_bar If s\bar_type=1 If MouseDown(1) If MouseX()=>s\x And MouseX()=<s\x+s\w If MouseY()=>s\y And MouseY()=<s\y+s\h s\slider_x=MouseX() s\potential#=(s\x+s\slider_x)/(s\x+s\w)100 EndIf EndIf EndIf EndIf If s\bar_type=2 If MouseDown(1) If MouseX()=>s\x And MouseX()=<s\x+s\w If MouseY()=>s\y And MouseY()=<s\y+s\h s\slider_y=MouseY() s\potential#=(s\y+s\slider_y)/(s\y+s\h)100 EndIf EndIf EndIf EndIf Next End Function Function get_slider_value(id$) For s.slider_bar=Each slider_bar If s\id$=id$ Return s\potential# EndIf Next End Function --v \|edit\| I forgot to mention the bar_type element in the slider_bar Type is 1 for horizontal, and 2 for vertical. \|edit\| \|edit\| I also forgot to say, feel free to rip this code apart and use in anyway you like. \|edit\|
Sunday, 04 March 2007, 16:48
mike_g	Hmm... When I move the sliders nothing seems to scroll.
Sunday, 04 March 2007, 17:07
steve_ancell	That's because it's not been done yet. I will keep you posted. If you include the line text 8,8,get_slider_value("map_horizontal")+" : "+get_slider_value("map_vertical") --v after the color statement in the main loop, it will show the percentages the sliders have moved across the bars.
Sunday, 04 March 2007, 17:08
mike_g	Cool, well what you got so far looks promising
Sunday, 04 March 2007, 17:12
steve_ancell	Cheerz Bro... just incase you were wondering, it's going to be a tilemap editor that can manage animated backgrounds. And yes, I will post it on here as FreeWare.
Monday, 05 March 2007, 19:46
power mousey	ahhhhh steve that looks and sounds really good. As the power mouse, I can't wait to try it out. And hey, animated backgrounds. Sounds really cool and from a sixties throwback..really groovy man now, I gotta go back to work. So, hey..... Now its time to say goodbye to all my socoder friends and others too.. So--> so what co--> rather be a Ceo instead der..and thats alllllllll. cheers,

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