OpenEuphoria

Re: Center text in Graphics mode?

• Posted by Graeme <graemeburke at CROSSWINDS.NET> Dec 31, 2000
• 542 views

At 06:15 PM 30/12/00 -0500, you wrote:
>
>Hi
>
>To display text and to have that text centered (Stupid Question)
>inside xy coordinates in all graphics modes virtually the same location
>on screen I setup cx,cy values like this (read-on theres a question)
>
>-- Insure every Graphics Mode Coordinates display accurate drawn images
>
>integer cx, cy, sx, sy
>
>if     mode = 261 then cx = 192 cy = 144 sx = 384 sy = 288
>elsif mode = 260 then cx = 192 cy = 144 sx = 384 sy = 288
>elsif mode = 259 then cx = 80  cy = 60  sx = 160 sy = 120
>elsif mode = 258 then cx = 80  cy = 60  sx = 160 sy = 120
>elsif mode = 256 then cx = 0   cy = -80 sx = 0   sy = 0
>else  cx = 0  cy = 0  sx = 0 sy = 0
>end if
>
>-- ?
>justify(CENTRE)
>x = floor((x1+cx)/2+(x2+cx)/2)
>y = floor((y1+cy)/2+(y2+cy)/2-6)
>setx(x) sety(y)
>write(text)
>
>I get centered with x and y integers useing floor (above)
>Could there be a mathematical equation that would work faster
>than the one provided?
>
>euman at bellsouth.net



Not sure if I understand the question,
but this might help.


**UNTESTED**

include graphics.e

constant tw = --width of text in pixels
constant th = --height of text in pixels

sequence vc,    --Video Config
         centre,--centre of screen {x,y}
         pos    --Position to display text at to be centred. {x,y}

vc=video_config()
centre={vc[VC_XPIXELS],vc[VC_YPIXELS]}/2
pos=centre-floor({tw,th}/2)



----------------------------
----------------------------
or you could centre the text around a point
that is 20% of the way accross the screen
and 80% of the way down the screen (regardless
of the mode) like this



***UNTESTED***

include graphics.e

constant tw = --width of text in pixels
constant th = --height of text in pixels

constant percent = {20,80} -- position for text

sequence vc,    --Video Config
         centre,--centre of screen {x,y}
         pos    --Position to display text at to be centred. {x,y}

vc=video_config()
pos=floor(centre-({tw,th}/2))

-------------------------------
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graeme
















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