450 lines
15 KiB
QBasic
450 lines
15 KiB
QBasic
type statetype
|
|
tool as long
|
|
fcolor as long
|
|
bcolor as long
|
|
offsetX as long
|
|
offsetY as long
|
|
zoom as single
|
|
brushsize as integer
|
|
startX as integer
|
|
startY as integer
|
|
isDrawing as integer
|
|
end type
|
|
|
|
type layertype
|
|
ihandle as long
|
|
blendmode as long
|
|
filter as long
|
|
kind as long
|
|
end type
|
|
|
|
redim shared layers(3) as layertype
|
|
dim shared state as statetype
|
|
|
|
dim shared showtoolbox as _byte: showtoolbox=-1
|
|
dim shared showcolorpicker as _byte: showcolorpicker=-1
|
|
|
|
dim shared mouseclicked as integer
|
|
dim shared mousedown as integer
|
|
dim shared rmouseclicked as integer
|
|
dim shared rmousedown as integer
|
|
|
|
$resize:on
|
|
screen _newimage(750,480,32)
|
|
_delay 0.1
|
|
temp&=_resize
|
|
redim shared pal(0) as _unsigned long
|
|
dim as integer ch1,ch2,ch3,bt
|
|
loadpalette "slso8",pal()
|
|
layers(0).ihandle=_newimage(640,350,32)
|
|
layers(1).ihandle=_newimage(640,350,32)
|
|
layers(2).ihandle=_newimage(640,350,32)
|
|
layers(3).ihandle=_newimage(640, 350, 32)
|
|
|
|
_dest layers(0).ihandle
|
|
line (0,0)-(_width-1,_height-1),_rgb32(255),bf
|
|
_dest 0
|
|
state.tool = 1
|
|
state.fcolor = 1
|
|
state.bcolor = 2
|
|
state.zoom = 1.0
|
|
state.offsetX = 70 + 20 ' To the right of the toolbox
|
|
state.offsetY = 20
|
|
state. brushsize = 1
|
|
dim lastMX, lastMY
|
|
dim diffX as integer
|
|
dim diffY as integer
|
|
dim oldWidth as integer
|
|
dim oldHeight as integer
|
|
dim keyin as string
|
|
|
|
oldWidth=_width
|
|
oldHeight=_height
|
|
do
|
|
if CheckResize(_source) = -1 THEN
|
|
diffX = _width - oldWidth
|
|
diffY = _height - oldHeight
|
|
state.offsetX = state.offsetX + (diffX / 2)
|
|
state.offsetY = state.offsetY + (diffY / 2)
|
|
oldWidth = _width
|
|
oldHeight = _height
|
|
end if
|
|
|
|
cls
|
|
line (0,0)-(_width-1,_height-1),backgroundcolor1,bf
|
|
|
|
'Mouse Handling
|
|
while _mouseinput:mw=mw+_mousewheel:wend
|
|
mouseclicked = 0
|
|
rmouseclicked = 0
|
|
if mousedown = -1 and _mousebutton(1) = 0 then mouseclicked = -1
|
|
if rmousedown = -1 and _mousebutton(2) = 0 then rmouseclicked = -1
|
|
mousedown = _mousebutton(1)
|
|
rmousedown = _mousebutton(2)
|
|
|
|
' Panning (Middle Mouse)
|
|
if _mousebutton(3) then
|
|
state.offsetX = int(state.offsetX + (_mousex - lastMX))
|
|
state.offsetY = int(state.offsetY + (_mousey - lastMY))
|
|
end if
|
|
lastMX = _mousex: lastMY = _mousey
|
|
|
|
' Zooming
|
|
if mw <> 0 then
|
|
' 1. Capture the current world position under the mouse
|
|
dim mouseWorldX as single: mouseWorldX = (_mousex - state.offsetX) / state.zoom
|
|
dim mouseWorldY as single: mouseWorldY = (_mousey - state.offsetY) / state.zoom
|
|
' 2. Calculate the new zoom level
|
|
state.zoom = state.zoom + (mw * 0.1 * state.zoom) ' Multiplier makes it feel smoother
|
|
if state.zoom < 0.05 then state.zoom = 0.05
|
|
if state.zoom > 20 then state.zoom = 20
|
|
' 3. Adjust offsets so the world position stays under the mouse
|
|
state.offsetX = _mousex - (mouseWorldX * state.zoom)
|
|
state.offsetY = _mousey - (mouseWorldY * state.zoom)
|
|
mw = 0
|
|
end if
|
|
|
|
' Keyboarding
|
|
keyin=inkey$
|
|
select case keyin
|
|
case "+"
|
|
state.brushsize=state.brushsize+1
|
|
case "-"
|
|
if state.brushsize>1 then state.brushsize=state.brushsize-1
|
|
case chr$(19) ' ctrl+s
|
|
'TODO: save logic
|
|
case chr$(27)' esc
|
|
'TODO: main menu
|
|
case "h"
|
|
state.zoom = 1.0
|
|
state.offsetX = (_width / 2) - (_width(layers(0).ihandle) / 2)
|
|
state.offsetY = (_height / 2) - (_height(layers(0).ihandle) / 2)
|
|
case "t"
|
|
showtoolbox=not showtoolbox
|
|
case "c"
|
|
showcolorpicker=not showcolorpicker
|
|
end select
|
|
|
|
canvas
|
|
if showtoolbox then toolbox
|
|
if showcolorpicker then colorpicker
|
|
|
|
_limit 30
|
|
_display
|
|
loop
|
|
|
|
sub toolbox
|
|
dim i, x, y
|
|
dim btnSize : btnSize = 32
|
|
dim spacing : spacing = 1
|
|
|
|
for i = 0 to 19
|
|
' Force integer math to keep columns locked at 2
|
|
' x will only ever be 0 or 33
|
|
x = (i mod 2) * (btnSize + spacing)
|
|
|
|
' y will only increase every 2 buttons
|
|
' Use Int() if your language doesn't support the \ operator
|
|
y = Int(i / 2) * (btnSize + spacing)
|
|
|
|
if imagebutton(x, y, btnSize, btnSize, icon(i)) then
|
|
state.tool = i + 1
|
|
end if
|
|
next
|
|
end sub
|
|
|
|
sub colorpicker
|
|
dim img as long
|
|
img=_newimage(16,16,32)
|
|
for i=0 to ubound(pal)
|
|
_dest img
|
|
cls ,pal(i)
|
|
line (0,0)-(_width-1,height-1),pal(i),bf
|
|
_dest 0
|
|
select case imagebutton(i*16,_height-17,16,16,img)
|
|
case -1
|
|
state.fcolor=pal(i)
|
|
case -2
|
|
state.bcolor=pal(i)
|
|
end select
|
|
next i
|
|
_freeimage img
|
|
end sub
|
|
|
|
sub canvas
|
|
' 1. Define the Viewport (The "Window" on your screen)
|
|
dim viewX1 as integer
|
|
if showtoolbox then viewX1 = 70 else viewX1 = 0
|
|
dim viewY1 as integer: viewY1 = 0
|
|
dim viewX2 as integer: viewX2 = _width - 1
|
|
dim viewY2 as integer
|
|
if showcolorpicker then viewY2 = _height - 20 else viewY2 = _height - 1
|
|
|
|
_dest 0
|
|
|
|
' 2. Render Layers with Clipping
|
|
dim srcX1 as long
|
|
dim srcY1 as long
|
|
dim srcX2 as long
|
|
dim srcY2 as long
|
|
dim drawX1 as long
|
|
dim drawY1 as long
|
|
dim drawX2 as long
|
|
dim drawY2 as long
|
|
|
|
dim i as integer
|
|
for i = 0 to ubound(layers)
|
|
dim img as long: img = layers(i).ihandle
|
|
dim imgW as integer: imgW = _width(img)
|
|
dim imgH as integer: imgH = _height(img)
|
|
|
|
' Current scaled dimensions
|
|
dim fullScaledW as single: fullScaledW = imgW * state.zoom
|
|
dim fullScaledH as single: fullScaledH = imgH * state.zoom
|
|
|
|
' Calculate visible area in screen coordinates (Overlap of image and viewport)
|
|
drawX1 = state.offsetX
|
|
drawY1 = state.offsetY
|
|
drawX2 = state.offsetX + fullScaledW
|
|
drawY2 = state.offsetY + fullScaledH
|
|
|
|
' Clip the destination to the Viewport
|
|
if drawX1 < viewX1 then drawX1 = viewX1
|
|
if drawY1 < viewY1 then drawY1 = viewY1
|
|
if drawX2 > viewX2 then drawX2 = viewX2
|
|
if drawY2 > viewY2 then drawY2 = viewY2
|
|
|
|
' Only draw if the image is actually inside the viewport
|
|
if drawX2 > drawX1 and drawY2 > drawY1 then
|
|
' Map screen-clipped coordinates back to the source image coordinates
|
|
srcX1 = int((drawX1 - state.offsetX) / state.zoom)
|
|
srcY1 = int((drawY1 - state.offsetY) / state.zoom)
|
|
srcX2 = int((drawX2 - state.offsetX) / state.zoom)
|
|
srcY2 = int((drawY2 - state.offsetY) / state.zoom)
|
|
|
|
' Syntax: _PUTIMAGE (destX1, destY1)-(destX2, destY2), sourceHandle, 0, (srcX1, srcY1)-(srcX2, srcY2)
|
|
_putimage (drawX1, drawY1)-(drawX2, drawY2), img, 0, (srcX1, srcY1)-(srcX2, srcY2)
|
|
end if
|
|
next
|
|
|
|
' 3. Calculate Canvas Coordinates
|
|
dim canX as integer: canX = int((_mousex - state.offsetX) / state.zoom)
|
|
dim canY as integer: canY = int((_mousey - state.offsetY) / state.zoom)
|
|
|
|
static drawCol
|
|
if _mousebutton(1) then drawCol = state.fcolor
|
|
if _mousebutton(2) then drawCol = state.bcolor
|
|
|
|
' 4. Interaction Logic
|
|
if _mousex > boxX1 then
|
|
' Start Drawing Logic
|
|
if state.tool = 9 and (mouseclicked or rmouseclicked) then
|
|
_dest layers(1).ihandle
|
|
_source layers(1).ihandle
|
|
if mouseclicked then
|
|
floodfill canX,canY,state.fcolor
|
|
else
|
|
floodfill canX,canY,state.bcolor
|
|
end if
|
|
_dest 0
|
|
_source 0
|
|
exit sub
|
|
end if
|
|
|
|
if state.tool = 7 or state.tool = 8 then
|
|
if mouseclicked then
|
|
polypoints(pointCount * 2) = canX
|
|
polypoints(pointCount * 2 + 1) = canY
|
|
pointCount = pointCount + 1
|
|
state.isDrawing = -1
|
|
end if
|
|
else
|
|
if (mousedown or rmousedown) and state.isDrawing = 0 then
|
|
state.startX = canX
|
|
state.startY = canY
|
|
state.isDrawing = -1
|
|
end if
|
|
end if
|
|
|
|
if state.isDrawing then
|
|
' We use Layer 2 as the temporary preview "rubber-band" layer
|
|
_dest layers(2).ihandle
|
|
cls , 0
|
|
|
|
select case state.tool
|
|
case 1 ' Pencil
|
|
_dest layers(1).ihandle
|
|
thickline state.startX, state.startY, canX, canY, drawCol
|
|
state.startX = canX: state.startY = canY
|
|
case 2 ' Straight Line
|
|
thickline state.startX, state.startY, canX, canY, drawCol
|
|
case 3 ' Circle
|
|
dim r as single: r = sqr((canX - state.startX)^2 + (canY - state.startY)^2)
|
|
thickcircle state.startX, state.startY, r + 1, drawCol
|
|
case 4 ' Filled Circle
|
|
dim r_f as single: r_f = sqr((canX - state.startX)^2 + (canY - state.startY)^2)
|
|
filledcircle state.startX, state.startY, r_f, drawCol
|
|
case 5 ' Rect
|
|
thickline state.startX, state.startY, canX, state.startY, drawCol
|
|
thickline canX, state.startY, canX, canY, drawCol
|
|
thickline canX, canY, state.startX, canY, drawCol
|
|
thickline state.startX, canY, state.startX, state.startY, drawCol
|
|
case 6 ' Filled Rect
|
|
line (state.startX, state.startY)-(canX, canY), drawCol, bf
|
|
case 7, 8 ' Polygons
|
|
if pointCount > 0 then
|
|
for p = 1 to pointCount - 1
|
|
thickline polypoints((p - 1) * 2), polypoints((p - 1) * 2 + 1), polypoints(p * 2), polypoints(p * 2 + 1), state.fcolor
|
|
next p
|
|
thickline polypoints((pointCount - 1) * 2), polypoints((pointCount - 1) * 2 + 1), canX, canY, state.fcolor
|
|
end if
|
|
end select
|
|
|
|
' 5. Commit Logic
|
|
dim commit as integer: commit = 0
|
|
if state.tool = 7 or state.tool = 8 then
|
|
if rmouseclicked then commit = -1
|
|
else
|
|
if (mousedown=0) and (rmousedown=0) then commit = -1
|
|
end if
|
|
|
|
if commit then
|
|
_dest layers(1).ihandle ' Final destination is always the drawing layer
|
|
if (state.tool = 8 or state.tool=7) and pointCount > 2 then
|
|
redim finalP(pointCount * 2 - 1) as long
|
|
for p = 0 to (pointCount * 2) - 1: finalP(p) = polypoints(p): next
|
|
if state.tool =8 then filledPolygon finalP(), state.fcolor else Polygon finalP(), state.fcolor
|
|
else
|
|
' Merge the preview into the drawing layer
|
|
_putimage , layers(2).ihandle, layers(1).ihandle
|
|
end if
|
|
|
|
_dest layers(2).ihandle: cls , 0
|
|
state.isDrawing = 0
|
|
pointCount = 0
|
|
end if
|
|
end if
|
|
end if
|
|
_dest 0 ' Ensure we return to main screen
|
|
end sub
|
|
|
|
function icon (index as long)
|
|
static init as integer
|
|
static icons() as long
|
|
if not init then
|
|
redim icons(19) as long ' Room for 20 icons
|
|
|
|
' Define your specific tool icons here
|
|
icons(0) = _newimage(32,32,32): _dest icons(0): line (5, 27)-(27, 5): _dest 0
|
|
icons(1) = _newimage(32,32,32): _dest icons(1): circle (15, 15), 13: _dest 0
|
|
icons(2) = _newimage(32,32,32): _dest icons(2): line (5, 5)-(27, 27), , b: _dest 0
|
|
icons(6) = _newimage(32,32,32): _dest icons(6)
|
|
line (5,15)-(15,5):line -(25,15):line -(20,25): line -(10,25):line -(5,15)
|
|
_dest 0
|
|
|
|
icons(7) = _newimage(32, 32, 32): _dest icons(7)
|
|
' Draw a small filled shape for the filled polygon icon
|
|
for fy = 10 to 20: line (10, fy)-(22, fy): next
|
|
_dest 0
|
|
icons(8) = _newimage(32, 32, 32): _dest icons(8)
|
|
' Simple "Bucket" icon
|
|
line (8, 10)-(24, 10): line -(26, 22): line -(6, 22): line -(8, 10)
|
|
line (10, 8)-(22, 8) ' Handle
|
|
_dest 0
|
|
' Fill the remaining slots with blank 32x32 images
|
|
dim j as integer
|
|
for j = 0 to 19
|
|
if icons(j) = 0 then icons(j) = _newimage(32, 32, 32)
|
|
next
|
|
|
|
init = -1
|
|
end if
|
|
|
|
' Bounds checking to prevent returning 0 or crashing
|
|
if index >= 0 and index <= 19 then
|
|
icon = icons(index)
|
|
else
|
|
icon = icons(0)
|
|
end if
|
|
end function
|
|
|
|
'$include: 'include/ui.bm'
|
|
'$include: 'include/imgout.bm'
|
|
'$include: 'include/palette.bm'
|
|
'$include: 'include/tools.bm'
|
|
''$include: 'include/effects.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
|
|
|
|
|
|
FUNCTION CheckResize (CurrentScreen AS _UNSIGNED LONG) 'pulled straight out of the wiki'
|
|
DIM TempScreen AS _UNSIGNED LONG
|
|
CheckResize = 0
|
|
IF _RESIZE THEN
|
|
TempScreen = _COPYIMAGE(CurrentScreen, 32)
|
|
SCREEN TempScreen
|
|
_FREEIMAGE CurrentScreen
|
|
CurrentScreen = _NEWIMAGE(_RESIZEWIDTH, _RESIZEHEIGHT, 32)
|
|
SCREEN CurrentScreen
|
|
_PUTIMAGE (0, 0), TempScreen, CurrentScreen
|
|
_DISPLAY
|
|
_FREEIMAGE TempScreen
|
|
CheckResize = -1
|
|
END IF
|
|
|
|
END FUNCTION
|