type statetype
    tool as long
    fcolor as long
    bcolor as long
end type

type layertype
    ihandle as long
    blendmode as long
    filter as long
end type

dim shared layers(0) as layertype
dim shared state as statetype



dim shared mouseclicked as integer
dim shared mousedown as integer
screen _newimage(640,480,32)
redim pal(0) as _unsigned long
dim as integer ch1,ch2,ch3,bt
loadpalette "slso8",pal()

do
    line (0,0)-(_width-1,_height-1),backgroundcolor1,bf
    while _mouseinput:wend
    mouseclicked=0
    if mousedown=-1 and _mousebutton(1)=0 then mouseclicked=-1
    mousedown=_mousebutton(1)
    toolbox
    colorpicker
    canvas
    locate 10,10: print state.tool
    _limit 30
    _display
loop

sub toolbox
    dim x,y
   if imagebutton(0,0,32,32,icon(0)) then state.tool=1
   if imagebutton(32,0,32,32,icon(1)) then state.tool=2
end sub

sub colorpicker

end sub

sub canvas

end sub

function icon(index as long)
    static init as integer
    static icons() as long
    if not init then
        dim icons(5) as long
        icons(0)=_newimage(32,32,32)
        _dest icons(0)
        line (5,27)-(27,5)
        icons(1)=_newimage(32,32,32)
        _dest icons(1)
        circle (15,15),13
        icons(2)=_newimage(32,32,32)
        _dest icons(2)
        
        _dest 0
    init = -1
    end if
    if (index>=lbound(icons)) and (index<=ubound(icons)) then
        icon=icons(index)
    end if
end function

'$include: 'include/ui.bm'

'$include: 'include/imgout.bm'
'$include: 'include/palette.bm'

function adduiicon(imagehandle as long)
    dim unknown as long
    adduiicon=__internaluiicon(unknown,imagehandle,1)
end function

function adduiiconfromfile(filename as string)
    dim unknown as long
    adduiiconfromfile=__internaluiicon(unknown,_loadimage(filename),1)
end function

function uiicon(index)
    dim unknown as long
    uiicon=internaluiicon(index,unknown,2)
end function

function __internaluiicon&(index as long,imagehandle as long,mode as integer)
    static init as integer
    static icons() as long
    if not init or mode=3 then
        if mode<3 then 
            redim icons(3) as long
        else
            _freeimage icons(0)
            _freeimage icons(1)
            _freeimage icons(2)
            _freeimage icons(3)
        end if
        icons(0)=_newimage(23,23,32) 'Up arrow'
        _dest icons(0)
        color textcolor
        
        icons(1)=_newimage(23,23,32) 'Down arrow'
        _dest icons(1)
        color textcolor
        
        icons(2)=_newimage(23,23,32) 'Left arrow'
        _dest icons(2)
        color textcolor
        
        icons(3)=_newimage(23,23,32) 'Right arrow'
        _dest icons(3)               
        color textcolor
        
        _dest 0
        init=-1
    end if
    
    select case mode
        case 1
            redim _preserve icons(ubound(icons)+1)
            icons(ubound(icons))=imagehandle
            __internaluiicon=ubound(icons)
        case 2
            __internaluiicon=icons(index)
    end select
end function