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Greyscale bars/Display: Difference between revisions

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Greyscale bars/Display (view source)

Revision as of 18:20, 12 November 2021

11,713 bytes added ,  2 years ago
m
→‎{{header|Phix}}: added syntax colouring, made p2js compatible
(Added Wren)
m (→‎{{header|Phix}}: added syntax colouring, made p2js compatible)
Line 1,250:
Resizeable. Use of nx avoids rounding/misalignment errors
{{libheader|Phix/pGUI}}
{{libheader|Phix/online}}
<lang Phix>-- demo\rosetta\Greyscale_bars.exw
You can run this online [http://phix.x10.mx/p2js/Greyscale_bars.htm here].
include pGUI.e
<!--<lang Phix>(phixonline)-->
 
<span style="color: #000080;font-style:italic;">--
Ihandle dlg, canvas
-- demo\rosetta\Greyscale_bars.exw
cdCanvas cddbuffer, cdcanvas
-- ===============================
 
--</span>
function redraw_cb(Ihandle /*ih*/, integer /*posx*/, integer /*posy*/)
<span style="color: #008080;">with</span> <span style="color: #008080;">javascript_semantics</span>
cdCanvasActivate(cddbuffer)
<span style="color: #008080;">include</span> <span style="color: #000000;">pGUI</span><span style="color: #0000FF;">.</span><span style="color: #000000;">e</span>
integer {width, height} = IupGetIntInt(canvas, "DRAWSIZE")
integer h = ceil(height/4)
<span style="color: #004080;">Ihandle</span> <span style="color: #000000;">dlg</span><span style="color: #0000FF;">,</span> <span style="color: #000000;">canvas</span>
for row=1 to 4 do
<span style="color: #004080;">cdCanvas</span> <span style="color: #000000;">cddbuffer</span><span style="color: #0000FF;">,</span> <span style="color: #000000;">cdcanvas</span>
integer x = 0, p2 = power(2,row+2), c = floor(255/(p2-1))
for n=0 to p2-1 do
<span style="color: #004080;">integer</span> <span style="color: #000000;">quit</span> <span style="color: #0000FF;">=</span> <span style="color: #000000;">1</span>
integer colour = c*n*#010101
<span style="color: #004080;">bool</span> <span style="color: #000000;">refire</span> <span style="color: #0000FF;">=</span> <span style="color: #004600;">false</span>
if and_bits(row,1)=0 then colour = xor_bits(colour,#FFFFFF) end if
cdCanvasSetForeground(cddbuffer, colour)
<span style="color: #008080;">function</span> <span style="color: #000000;">redraw_cb</span><span style="color: #0000FF;">(</span><span style="color: #004080;">Ihandle</span> <span style="color: #000080;font-style:italic;">/*ih*/</span><span style="color: #0000FF;">,</span> <span style="color: #004080;">integer</span> <span style="color: #000080;font-style:italic;">/*posx*/</span><span style="color: #0000FF;">,</span> <span style="color: #000080;font-style:italic;">/*posy*/</span><span style="color: #0000FF;">)</span>
integer nx = ceil(width*(n+1)/p2)
<span style="color: #7060A8;">cdCanvasActivate</span><span style="color: #0000FF;">(</span><span style="color: #000000;">cddbuffer</span><span style="color: #0000FF;">)</span>
cdCanvasBox(cddbuffer, x, nx, height-h, height)
<span style="color: #004080;">integer</span> <span style="color: #0000FF;">{</span><span style="color: #000000;">width</span><span style="color: #0000FF;">,</span> <span style="color: #000000;">height</span><span style="color: #0000FF;">}</span> <span style="color: #0000FF;">=</span> <span style="color: #7060A8;">IupGetIntInt</span><span style="color: #0000FF;">(</span><span style="color: #000000;">canvas</span><span style="color: #0000FF;">,</span> <span style="color: #008000;">"DRAWSIZE"</span><span style="color: #0000FF;">)</span>
x = nx
<span style="color: #004080;">integer</span> <span style="color: #000000;">h</span> <span style="color: #0000FF;">=</span> <span style="color: #7060A8;">floor</span><span style="color: #0000FF;">(</span><span style="color: #000000;">height</span><span style="color: #0000FF;">/</span><span style="color: #000000;">4</span><span style="color: #0000FF;">)</span>
end for
<span style="color: #000000;">height</span> <span style="color: #0000FF;">-=</span> <span style="color: #000000;">1</span>
height -= h
<span style="color: #008080;">for</span> <span style="color: #000000;">row</span><span style="color: #0000FF;">=</span><span style="color: #000000;">1</span> <span style="color: #008080;">to</span> <span style="color: #000000;">4</span> <span style="color: #008080;">do</span>
end for
<span style="color: #004080;">integer</span> <span style="color: #000000;">x</span> <span style="color: #0000FF;">=</span> <span style="color: #000000;">0</span><span style="color: #0000FF;">,</span> <span style="color: #000000;">p2</span> <span style="color: #0000FF;">=</span> <span style="color: #7060A8;">power</span><span style="color: #0000FF;">(</span><span style="color: #000000;">2</span><span style="color: #0000FF;">,</span><span style="color: #000000;">row</span><span style="color: #0000FF;">+</span><span style="color: #000000;">2</span><span style="color: #0000FF;">),</span> <span style="color: #000000;">c</span> <span style="color: #0000FF;">=</span> <span style="color: #7060A8;">floor</span><span style="color: #0000FF;">(</span><span style="color: #000000;">255</span><span style="color: #0000FF;">/(</span><span style="color: #000000;">p2</span><span style="color: #0000FF;">-</span><span style="color: #000000;">1</span><span style="color: #0000FF;">))</span>
cdCanvasFlush(cddbuffer)
<span style="color: #008080;">for</span> <span style="color: #000000;">n</span><span style="color: #0000FF;">=</span><span style="color: #000000;">0</span> <span style="color: #008080;">to</span> <span style="color: #000000;">p2</span><span style="color: #0000FF;">-</span><span style="color: #000000;">1</span> <span style="color: #008080;">do</span>
return IUP_DEFAULT
<span style="color: #004080;">integer</span> <span style="color: #000000;">colour</span> <span style="color: #0000FF;">=</span> <span style="color: #000000;">c</span><span style="color: #0000FF;">*</span><span style="color: #000000;">n</span><span style="color: #0000FF;">*</span><span style="color: #000000;">#010101</span>
end function
<span style="color: #008080;">if</span> <span style="color: #7060A8;">and_bits</span><span style="color: #0000FF;">(</span><span style="color: #000000;">row</span><span style="color: #0000FF;">,</span><span style="color: #000000;">1</span><span style="color: #0000FF;">)=</span><span style="color: #000000;">0</span> <span style="color: #008080;">then</span> <span style="color: #000000;">colour</span> <span style="color: #0000FF;">=</span> <span style="color: #7060A8;">xor_bits</span><span style="color: #0000FF;">(</span><span style="color: #000000;">colour</span><span style="color: #0000FF;">,</span><span style="color: #000000;">#FFFFFF</span><span style="color: #0000FF;">)</span> <span style="color: #008080;">end</span> <span style="color: #008080;">if</span>
 
<span style="color: #7060A8;">cdCanvasSetForeground</span><span style="color: #0000FF;">(</span><span style="color: #000000;">cddbuffer</span><span style="color: #0000FF;">,</span> <span style="color: #000000;">colour</span><span style="color: #0000FF;">)</span>
function map_cb(Ihandle ih)
<span style="color: #004080;">integer</span> <span style="color: #000000;">nx</span> <span style="color: #0000FF;">=</span> <span style="color: #7060A8;">ceil</span><span style="color: #0000FF;">(</span><span style="color: #000000;">width</span><span style="color: #0000FF;">*(</span><span style="color: #000000;">n</span><span style="color: #0000FF;">+</span><span style="color: #000000;">1</span><span style="color: #0000FF;">)/</span><span style="color: #000000;">p2</span><span style="color: #0000FF;">)</span>
cdcanvas = cdCreateCanvas(CD_IUP, ih)
<span style="color: #7060A8;">cdCanvasBox</span><span style="color: #0000FF;">(</span><span style="color: #000000;">cddbuffer</span><span style="color: #0000FF;">,</span> <span style="color: #000000;">x</span><span style="color: #0000FF;">,</span> <span style="color: #000000;">nx</span><span style="color: #0000FF;">-</span><span style="color: #000000;">1</span><span style="color: #0000FF;">,</span> <span style="color: #0000FF;">(</span><span style="color: #000000;">4</span><span style="color: #0000FF;">-</span><span style="color: #000000;">row</span><span style="color: #0000FF;">)*</span><span style="color: #000000;">h</span><span style="color: #0000FF;">,</span> <span style="color: #000000;">height</span><span style="color: #0000FF;">)</span>
cddbuffer = cdCreateCanvas(CD_DBUFFER, cdcanvas)
<span style="color: #000000;">x</span> <span style="color: #0000FF;">=</span> <span style="color: #000000;">nx</span>
return IUP_DEFAULT
<span style="color: #008080;">end</span> <span style="color: #008080;">for</span>
end function
<span style="color: #000000;">height</span> <span style="color: #0000FF;">=</span> <span style="color: #0000FF;">(</span><span style="color: #000000;">4</span><span style="color: #0000FF;">-</span><span style="color: #000000;">row</span><span style="color: #0000FF;">)*</span><span style="color: #000000;">h</span><span style="color: #0000FF;">-</span><span style="color: #000000;">1</span>
 
<span style="color: #008080;">end</span> <span style="color: #008080;">for</span>
function unmap_cb(Ihandle /*ih*/)
<span style="color: #7060A8;">cdCanvasFlush</span><span style="color: #0000FF;">(</span><span style="color: #000000;">cddbuffer</span><span style="color: #0000FF;">)</span>
cdKillCanvas(cddbuffer)
<span style="color: #008080;">return</span> <span style="color: #004600;">IUP_DEFAULT</span>
cdKillCanvas(cdcanvas)
<span style="color: #008080;">end</span> <span style="color: #008080;">function</span>
return IUP_DEFAULT
end function
<span style="color: #008080;">function</span> <span style="color: #000000;">map_cb</span><span style="color: #0000FF;">(</span><span style="color: #004080;">Ihandle</span> <span style="color: #000000;">ih</span><span style="color: #0000FF;">)</span>
 
<span style="color: #000000;">cdcanvas</span> <span style="color: #0000FF;">=</span> <span style="color: #7060A8;">cdCreateCanvas</span><span style="color: #0000FF;">(</span><span style="color: #004600;">CD_IUP</span><span style="color: #0000FF;">,</span> <span style="color: #000000;">ih</span><span style="color: #0000FF;">)</span>
procedure main()
<span style="color: #000000;">cddbuffer</span> <span style="color: #0000FF;">=</span> <span style="color: #7060A8;">cdCreateCanvas</span><span style="color: #0000FF;">(</span><span style="color: #004600;">CD_DBUFFER</span><span style="color: #0000FF;">,</span> <span style="color: #000000;">cdcanvas</span><span style="color: #0000FF;">)</span>
IupOpen()
<span style="color: #008080;">return</span> <span style="color: #004600;">IUP_DEFAULT</span>
 
<span style="color: #008080;">end</span> <span style="color: #008080;">function</span>
canvas = IupCanvas(NULL)
IupSetAttribute(canvas, "RASTERSIZE", "600x400")
<span style="color: #008080;">function</span> <span style="color: #000000;">unmap_cb</span><span style="color: #0000FF;">(</span><span style="color: #004080;">Ihandle</span> <span style="color: #000080;font-style:italic;">/*ih*/</span><span style="color: #0000FF;">)</span>
 
<span style="color: #7060A8;">cdKillCanvas</span><span style="color: #0000FF;">(</span><span style="color: #000000;">cddbuffer</span><span style="color: #0000FF;">)</span>
IupSetCallback(canvas, "MAP_CB", Icallback("map_cb"))
<span style="color: #7060A8;">cdKillCanvas</span><span style="color: #0000FF;">(</span><span style="color: #000000;">cdcanvas</span><span style="color: #0000FF;">)</span>
IupSetCallback(canvas, "UNMAP_CB", Icallback("unmap_cb"))
<span style="color: #008080;">return</span> <span style="color: #004600;">IUP_DEFAULT</span>
 
<span style="color: #008080;">end</span> <span style="color: #008080;">function</span>
dlg = IupDialog(canvas)
IupSetAttribute(dlg, "TITLE", "Greyscale bars")
<span style="color: #008080;">procedure</span> <span style="color: #000000;">main</span><span style="color: #0000FF;">()</span>
IupSetCallback(canvas, "ACTION", Icallback("redraw_cb"))
<span style="color: #7060A8;">IupOpen</span><span style="color: #0000FF;">()</span>
 
<span style="color: #000000;">canvas</span> <span style="color: #0000FF;">=</span> <span style="color: #7060A8;">IupCanvas</span><span style="color: #0000FF;">(</span><span style="color: #008000;">"RASTERSIZE=600x400"</span><span style="color: #0000FF;">)</span>
IupMap(dlg)
<span style="color: #7060A8;">IupSetCallbacks</span><span style="color: #0000FF;">(</span><span style="color: #000000;">canvas</span><span style="color: #0000FF;">,</span> <span style="color: #0000FF;">{</span><span style="color: #008000;">"MAP_CB"</span><span style="color: #0000FF;">,</span> <span style="color: #7060A8;">Icallback</span><span style="color: #0000FF;">(</span><span style="color: #008000;">"map_cb"</span><span style="color: #0000FF;">),</span>
IupSetAttribute(canvas, "RASTERSIZE", NULL)
<span style="color: #008000;">"UNMAP_CB"</span><span style="color: #0000FF;">,</span> <span style="color: #7060A8;">Icallback</span><span style="color: #0000FF;">(</span><span style="color: #008000;">"unmap_cb"</span><span style="color: #0000FF;">),</span>
 
<span style="color: #008000;">"ACTION"</span><span style="color: #0000FF;">,</span> <span style="color: #7060A8;">Icallback</span><span style="color: #0000FF;">(</span><span style="color: #008000;">"redraw_cb"</span><span style="color: #0000FF;">)})</span>
IupShowXY(dlg,IUP_CENTER,IUP_CENTER)
<span style="color: #000000;">dlg</span> <span style="color: #0000FF;">=</span> <span style="color: #7060A8;">IupDialog</span><span style="color: #0000FF;">(</span><span style="color: #000000;">canvas</span><span style="color: #0000FF;">,</span> <span style="color: #008000;">`TITLE="Greyscale bars"`</span><span style="color: #0000FF;">)</span>
 
<span style="color: #7060A8;">IupShow</span><span style="color: #0000FF;">(</span><span style="color: #000000;">dlg</span><span style="color: #0000FF;">)</span>
IupMainLoop()
<span style="color: #7060A8;">IupSetAttribute</span><span style="color: #0000FF;">(</span><span style="color: #000000;">canvas</span><span style="color: #0000FF;">,</span> <span style="color: #008000;">"RASTERSIZE"</span><span style="color: #0000FF;">,</span> <span style="color: #004600;">NULL</span><span style="color: #0000FF;">)</span>
 
<span style="color: #008080;">if</span> <span style="color: #7060A8;">platform</span><span style="color: #0000FF;">()!=</span><span style="color: #004600;">JS</span> <span style="color: #008080;">then</span>
IupClose()
<span style="color: #7060A8;">IupMainLoop</span><span style="color: #0000FF;">()</span>
end procedure
<span style="color: #7060A8;">IupClose</span><span style="color: #0000FF;">()</span>
 
<span style="color: #008080;">end</span> <span style="color: #008080;">if</span>
main()</lang>
<span style="color: #008080;">end</span> <span style="color: #008080;">procedure</span>
<span style="color: #000000;">main</span><span style="color: #0000FF;">()</span>
<!--</lang>-->
 
=={{header|PicoLisp}}==
Petelomax
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