343 lines
10 KiB
QBasic
343 lines
10 KiB
QBasic
type statetype
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tool as long
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fcolor as long
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bcolor as long
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offsetX as single
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offsetY as single
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zoom as single
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brushsize as integer
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startX as integer
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startY as integer
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isDrawing as integer
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end type
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type layertype
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ihandle as long
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blendmode as long
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filter as long
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kind as long
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end type
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redim shared layers(2) as layertype
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dim shared state as statetype
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dim shared mouseclicked as integer
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dim shared mousedown as integer
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dim shared rmouseclicked as integer
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dim shared rmousedown as integer
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$resize:on
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screen _newimage(750,480,32)
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_delay 0.1
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temp&=_resize
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redim shared pal(0) as _unsigned long
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dim as integer ch1,ch2,ch3,bt
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loadpalette "endesga16",pal()
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layers(0).ihandle=_newimage(640,350,32)
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layers(1).ihandle=_newimage(640,350,32)
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layers(2).ihandle=_newimage(640,350,32)
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_dest layers(0).ihandle
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line (0,0)-(_width-1,_height-1),_rgb32(255),bf
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_dest 0
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state.tool = 1
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state.fcolor = 1
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state.bcolor = 2
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state.zoom = 1.0
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state.offsetX = 70 + 20 ' To the right of the toolbox
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state.offsetY = 20
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state. brushsize = 1
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dim lastMX, lastMY
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dim diffX as integer
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dim diffY as integer
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dim oldWidth as integer
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dim oldHeight as integer
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dim keyin as string
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oldWidth=_width
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oldHeight=_height
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do
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if CheckResize(_source) = -1 THEN
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diffX = _width - oldWidth
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diffY = _height - oldHeight
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state.offsetX = state.offsetX + (diffX / 2)
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state.offsetY = state.offsetY + (diffY / 2)
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oldWidth = _width
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oldHeight = _height
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end if
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cls
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line (0,0)-(_width-1,_height-1),backgroundcolor1,bf
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'Mouse Handling
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while _mouseinput:mw=mw+_mousewheel:wend
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mouseclicked = 0
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rmouseclicked = 0
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if mousedown = -1 and _mousebutton(1) = 0 then mouseclicked = -1
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if rmousedown = -1 and _mousebutton(2) = 0 then rmouseclicked = -1
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mousedown = _mousebutton(1)
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rmousedown = _mousebutton(2)
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' Panning (Middle Mouse)
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if _mousebutton(3) then
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state.offsetX = state.offsetX + (_mousex - lastMX)
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state.offsetY = state.offsetY + (_mousey - lastMY)
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end if
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lastMX = _mousex: lastMY = _mousey
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' Zooming
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if mw <> 0 then
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state.zoom = state.zoom + (mw * 0.1)
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if state.zoom < 0.1 then state.zoom = 0.1
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mw=0
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end if
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' Keyboarding
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keyin=inkey$
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select case keyin
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case "+"
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state.brushsize=state.brushsize+1
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case "-"
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if state.brushsize>1 then state.brushsize=state.brushsize-1
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end select
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_dest 0
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canvas 'draw canvas first so it doesn't over
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toolbox
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colorpicker
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_limit 30
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_display
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loop
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sub toolbox
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dim i, x, y
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dim btnSize : btnSize = 32
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dim spacing : spacing = 1
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for i = 0 to 19
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' Force integer math to keep columns locked at 2
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' x will only ever be 0 or 33
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x = (i mod 2) * (btnSize + spacing)
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' y will only increase every 2 buttons
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' Use Int() if your language doesn't support the \ operator
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y = Int(i / 2) * (btnSize + spacing)
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if imagebutton(x, y, btnSize, btnSize, icon(i)) then
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state.tool = i + 1
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end if
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next
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end sub
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sub colorpicker
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dim img as long
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img=_newimage(16,16,32)
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for i=0 to ubound(pal)
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_dest img
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cls ,pal(i)
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line (0,0)-(_width-1,height-1),pal(i),bf
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_dest 0
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select case imagebutton(i*16,_height-17,16,16,img)
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case -1
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state.fcolor=pal(i)
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case -2
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state.bcolor=pal(i)
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end select
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next i
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_freeimage img
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end sub
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sub canvas
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dim boxX1 as integer: boxX1 = 70
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dim boxWidth as integer: boxWidth = _width - 1 - boxX1
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dim boxHeight as integer: boxHeight = _height - 20
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' Workspace background
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line (boxX1, 0)-(_width - 1, boxHeight), _rgb32(32), bf
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' Render Layers (0 = background,1 = drawlayer, 2=reference 3 = Preview)
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dim i as integer
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for i = 0 to ubound(layers)
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dim w as integer: w = _width(layers(i).ihandle) * state.zoom
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dim h as integer: h = _height(layers(i).ihandle) * state.zoom
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_putimage (state.offsetX, state.offsetY)-(state.offsetX + w, state.offsetY + h), layers(i).ihandle
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next
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' Translate Mouse to Canvas Space
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dim canX as integer: canX = (_mousex - state.offsetX) / state.zoom
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dim canY as integer: canY = (_mousey - state.offsetY) / state.zoom
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' Color Selection: Left Click = Foreground, Right Click = Background
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dim drawCol as _unsigned long
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if mousedown or mouseclicked then drawCol = state.fcolor else drawCol = state.bcolor
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' Interaction Boundary Check
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if _mousex > boxX1 then
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' On Initial Click: Set the anchor point for shapes
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if (mousedown or rmousedown) and state.isDrawing = 0 then
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state.startX = canX
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state.startY = canY
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state.isDrawing = -1
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end if
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if state.isDrawing then
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' preview layer handles the "rubber-banding" of shapes
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_dest layers(2).ihandle
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cls , 0
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select case state.tool
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case 1 ' Pencil (Direct to Canvas)
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_dest layers(1).ihandle
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thickline state.startX, state.startY, canX, canY, drawCol
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state.startX = canX: state.startY = canY
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case 2 ' Straight Line
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thickline state.startX, state.startY, canX, canY, drawCol
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case 3 ' Thick Circle (Outline)
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dim r as single: r = sqr((canX - state.startX)^2 + (canY - state.startY)^2)
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r=abs(r)+1
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thickcircle state.startX, state.startY, r, drawCol
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case 4 ' Filled Circle
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dim r_fill as single: r_fill = sqr((canX - state.startX)^2 + (canY - state.startY)^2)
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filledcircle state.startX, state.startY, r_fill, drawCol
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case 5 ' Rectangle Outline (using thickline)
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thickline state.startX, state.startY, canX, state.startY, drawCol
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thickline canX, state.startY, canX, canY, drawCol
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thickline canX, canY, state.startX, canY, drawCol
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thickline state.startX, canY, state.startX, state.startY, drawCol
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case 6 ' Filled Rectangle
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line (state.startX, state.startY)-(canX, canY), drawCol, bf
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case 7
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case 8 ' Polygon Outline (using thickline)
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' Simple preview of a line; complex polygons usually require
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' a point-collection state machine.
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thickline state.startX, state.startY, canX, canY, drawCol
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end select
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' Release Logic: Commit preview to permanent layer
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if _mousebutton(1) = 0 and _mousebutton(2) = 0 then
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_dest layers(1).ihandle
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_putimage , layers(2).ihandle
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_dest layers(2).ihandle
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cls , 0
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state.isDrawing = 0
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end if
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_dest 0
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end if
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end if
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end sub
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function icon (index as long)
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static init as integer
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static icons() as long
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if not init then
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redim icons(19) as long ' Room for 20 icons
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' Define your specific tool icons here
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icons(0) = _newimage(32, 32, 32): _dest icons(0): line (5, 27)-(27, 5): _dest 0
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icons(1) = _newimage(32, 32, 32): _dest icons(1): circle (15, 15), 13: _dest 0
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icons(2) = _newimage(32, 32, 32): _dest icons(2): line (5, 5)-(27, 27), , b: _dest 0
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' Fill the remaining slots with blank 32x32 images
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dim j as integer
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for j = 3 to 19
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if icons(j) = 0 then icons(j) = _newimage(32, 32, 32)
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next
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init = -1
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end if
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' Bounds checking to prevent returning 0 or crashing
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if index >= 0 and index <= 19 then
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icon = icons(index)
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else
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icon = icons(0)
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end if
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end function
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'$include: 'include/ui.bm'
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'$include: 'include/imgout.bm'
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'$include: 'include/palette.bm'
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'$include: 'include/tools.bm'
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function adduiicon(imagehandle as long)
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dim unknown as long
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adduiicon=__internaluiicon(unknown,imagehandle,1)
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end function
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function adduiiconfromfile(filename as string)
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dim unknown as long
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adduiiconfromfile=__internaluiicon(unknown,_loadimage(filename),1)
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end function
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function uiicon(index)
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dim unknown as long
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uiicon=internaluiicon(index,unknown,2)
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end function
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function __internaluiicon&(index as long,imagehandle as long,mode as integer)
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static init as integer
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static icons() as long
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if not init or mode=3 then
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if mode<3 then
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redim icons(3) as long
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else
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_freeimage icons(0)
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_freeimage icons(1)
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_freeimage icons(2)
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_freeimage icons(3)
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end if
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icons(0)=_newimage(23,23,32) 'Up arrow'
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_dest icons(0)
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color textcolor
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icons(1)=_newimage(23,23,32) 'Down arrow'
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_dest icons(1)
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color textcolor
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icons(2)=_newimage(23,23,32) 'Left arrow'
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_dest icons(2)
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color textcolor
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icons(3)=_newimage(23,23,32) 'Right arrow'
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_dest icons(3)
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color textcolor
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_dest 0
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init=-1
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end if
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select case mode
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case 1
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redim _preserve icons(ubound(icons)+1)
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icons(ubound(icons))=imagehandle
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__internaluiicon=ubound(icons)
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case 2
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__internaluiicon=icons(index)
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end select
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end function
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FUNCTION CheckResize (CurrentScreen AS _UNSIGNED LONG) 'pulled straight out of the wiki'
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DIM TempScreen AS _UNSIGNED LONG
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CheckResize = 0
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IF _RESIZE THEN
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TempScreen = _COPYIMAGE(CurrentScreen, 32)
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SCREEN TempScreen
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_FREEIMAGE CurrentScreen
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CurrentScreen = _NEWIMAGE(_RESIZEWIDTH, _RESIZEHEIGHT, 32)
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SCREEN CurrentScreen
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_PUTIMAGE (0, 0), TempScreen, CurrentScreen
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_DISPLAY
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_FREEIMAGE TempScreen
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CheckResize = -1
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END IF
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END FUNCTION
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