Author Topic: [Lua] Image Editor (Read 44367 times)

Chockosta · « **on:** August 06, 2011, 12:38:27 pm »

Hello everybody !

Spoiler For Old first post:

The last version is nSpaint 0.7. It features :

-Two editors : nSpaint for images and nAnima for animations
-A lot of tools : scroll, draw, erase, fill, pick, circle, line, rectangle, fill circle, fill rectangle.
-A native-like GUI (in nAnima too)
-Save, open or create images of any dimensions
-Transparency support
-A file manager, which can be used to delete images (in nAnima too)
-A tool to copy the current image code to the clipboard (really useful to Lua developpers!)
-A tool to paste an image if there's one in the clipboard
-Undo and redo! (5 times max)
-A option to erase all the image
-A nice color selecter
-Tools to flip/rotate the image
-A filter which replace a color with another one
-A filter which erases a color
-Two filters to increase and decrease brightness
-A 'help' window for each tool
-A splash screen (in nAnima too)
-You can move the cursor with the mouse
-The image is automatically moved when the cursor goes off the screen
-The cursor is moved when you scroll

DOWNLOAD

Screenies:

(The attached screenies are old ones)

Adriweb · « **Reply #1 on:** August 06, 2011, 12:40:15 pm »

Woooow

This is awesome.

Congratulations.

Will definitely download and use !!

Chockosta · « **Reply #2 on:** August 06, 2011, 12:40:59 pm »

Well, for now you can't edit pictures, just load and save them

Adriweb · « **Reply #3 on:** August 06, 2011, 12:43:05 pm »

Well, jimbauwens' TI.Image javascript library is available on his website, so you can probably get some interesting editing stuff from there

BTW, as usual... source code ?

Chockosta · « **Reply #4 on:** August 06, 2011, 12:51:00 pm »

(It will change very soon)
There isn't any class because I don't like object-oriented programmation... Sorry

Spoiler For Spoiler:

Data.lua :

Code: [Select]

--DATA
--drawing
status="drawing"
color={225,170,0}
imgString=nil
imgTable=nil
imgZoom=1
imgName="Open any file"
--color select
newColor={200,100,255}
selColor=1
--text request
requested=""
rqstr=""
--error
errtype=""


--MENU
function menuNew() on.charIn("N") end
function menuOpen() on.charIn("O") end
function menuSave() on.charIn("S") end
function menuZIn() on.charIn("+") end
function menuZOut() on.charIn("-") end
function menuDraw() on.charIn("d") end
function menuPaint() on.charIn("p") end
function menuErase() on.charIn("e") end
function menuCHex() on.charIn("h") end
function menuCSel() on.charIn("s") end

menu={
{"File",
 {"New (Shift+n)",menuNew},
 {"Open (Shift+o)",menuOpen},
 {"Save (Shift+s)",menuSave}
},
{"Edit",
 {"Zoom in (+)",menuZIn},
 {"Zoom out (-)",menuZOut}
},
{"Tools",
 {"Draw (d)",menuDraw},
 {"Paint (p)",menuPaint},
 {"Erase (e)",menuErase}
},
{"Color",
 {"Hexadecimal (h)",menuCHex},
 {"Select (s)",menuCSel}
}}
toolpalette.register(menu)

Functions.lua

Code: [Select]

--MATHTOOLS
mathTools={}

function mathTools.base10to2(n)
 local str
 str=""
 if n~=0 then
  while n~=1 do
   str=str..tostring(n%2)
   n=math.floor(n/2)
  end
  str=str..tostring(n%2)
  return string.reverse(str)
 else
  return "0"
 end
end

function mathTools.base2to10(n)
 local num = 0 
 local ex = string.len(n) - 1 
 local l = 0 
 l = ex + 1 
 for i = 1, l do 
  b = string.sub(n, i, i) 
  if b == "1" then 
   num = num + 2^ex 
  end 
  ex = ex - 1 
 end 
 return num 
end

function mathTools.int2Hex(int)
 if int<10 then
  return tostring(int)
 else
  if int==10 then return "A"
  elseif int==11 then return "B"
  elseif int==12 then return "C"
  elseif int==13 then return "D"
  elseif int==14 then return "E"
  elseif int==15 then return "F" 
  end
 end
end



--MISCELLANEOUS


function width() return platform.window:width() end
function height() return platform.window:height() end
function refresh() platform.window:invalidate() end


function strch(str,ch)
 local test
 test=nil
 for i=1,string.len(str),1 do
  if string.sub(str,i,i)==ch then
   test=1
  end
 end
 return test
end

function saveFile()
 if rqstr=="" then
  status="error"
  errtype="Please type a name"
 elseif strch("0123456789",string.sub(rqstr,1,1)) then
  status="error"
  errtype="Invalid name"
 else
  var.store(rqstr,imgString)
  imgName=rqstr
 end
end

function loadFile()
 local test
 test=var.recall(rqstr)
 if not test then
  status="error"
  errtype="File does not exist"
 elseif type(test)~="string" then
  status="error"
  errtype="Invalid file"
 else
  imgZoom=1
  imgString=test
  imgTools.img2table(imgString)
  imgName=rqstr
 end
end

function loadHexColor()
 local isHex,tmptable
 isHex=1
 tmptable={}
 if string.len(rqstr)==6 then
  for i=1,6,1 do
   currentch=string.sub(rqstr,i,i)
   if strch("0123456789",currentch) then
    tmptable[i]=tonumber(currentch)
   elseif strch("Aa",currentch) then tmptable[i]=10
   elseif strch("Bb",currentch) then tmptable[i]=11
   elseif strch("Cc",currentch) then tmptable[i]=12
   elseif strch("Dd",currentch) then tmptable[i]=13
   elseif strch("Ee",currentch) then tmptable[i]=14
   elseif strch("Ff",currentch) then tmptable[i]=15
   else isHex=nil end
  end
 else isHex=nil
 end
 if isHex then
  color={tmptable[1]*16+tmptable[2],tmptable[3]*16+tmptable[4],tmptable[5]*16+tmptable[6]}
 else
  status="error"
  errtype="Invalid hexadecimal"
 end
end

imgTools.lua

Code: [Select]

imgTools={}

function imgTools.getPixel(byte1,byte2)
 local str2
 str2=imgTools.eightChars(mathTools.base10to2(tonumber(byte2)))..imgTools.eightChars(mathTools.base10to2(tonumber(byte1)))
 return {tonumber(string.sub(str2,1,1)),mathTools.base2to10(string.sub(str2,2,6)),mathTools.base2to10(string.sub(str2,7,11)),mathTools.base2to10(string.sub(str2,12,16))}
end

function imgTools.getSize(img)
 imgWidth=mathTools.base2to10(mathTools.base10to2(tonumber(string.sub(img,10,12)..string.sub(img,7,9)..string.sub(img,4,6)..string.sub(img,1,3))))
 imgHeight=mathTools.base2to10(mathTools.base10to2(tonumber(string.sub(img,22,24)..string.sub(img,19,21)..string.sub(img,16,18)..string.sub(img,13,15))))
end

function imgTools.threeNumbers(nb)
 if string.len(tostring(nb))==1 then
  return "00"..tostring(nb)
 elseif string.len(tostring(nb))==2 then
  return "0"..tostring(nb)
 else
  return tostring(nb)
 end
end

function imgTools.eightChars(str)
 return string.rep("0",8-string.len(str))..str
end

function imgTools.convertChars(img)
 local finished,img2,index
 index=1
 img2=""
 finished=nil
 while not finished do
  if string.sub(img,index,index)~=[[\]] then
   img2=img2..imgTools.threeNumbers(string.byte(string.sub(img,index,index)))
   index=index+1
  else
   img2=img2..string.sub(img,index+1,index+3)
   index=index+4
  end
  if index>string.len(img) then
   finished=1
  end
 end
 return img2
end

function imgTools.img2table(str)
 local index
 str2=imgTools.convertChars(str)
 imgTable={}
 imgTools.getSize(str2)
 for raw=1,imgHeight do
  imgTable[raw]={}
  for column=1,imgWidth do
   index=(column-1)*6+61+(raw-1)*6*imgWidth
   imgTable[raw][column]=imgTools.getPixel(string.sub(str2,index,index+2),string.sub(str2,index+3,index+5))
  end 
 end
end

function imgTools.drawTable(gc,x,y)
 for raw=1,imgHeight do
  for column=1,imgWidth do
   if imgTable[raw][column][1]==1 then
    gc:setColorRGB(imgTable[raw][column][2]*8,imgTable[raw][column][3]*8,imgTable[raw][column][4]*8)
    gc:fillRect((column-1)*imgZoom+x,(raw-1)*imgZoom+y,imgZoom,imgZoom)
    gc:setColorRGB(0,0,0)
    gc:setPen("thin","smooth")
    gc:drawRect(x-1,y-1,imgWidth*imgZoom+1,imgHeight*imgZoom+1)
   end
  end
 end
end

Events.lua

Code: [Select]

--EVENTS
function on.backspaceKey()
 if status=="requesting" then
  rqstr=string.sub(rqstr,1,string.len(rqstr)-1)
  platform.window:invalidate()
 end
end

function on.charIn(ch)
 if status=="drawing" then
  if ch=="+" and imgZoom<8 then
   imgZoom=imgZoom*2
  elseif ch=="-" and imgZoom>1 then
   imgZoom=imgZoom/2
  elseif ch=="O" then
   status="requesting"
   rqstr=""
   requested="File name"
  elseif ch=="S" then
   if not imgString then
    status="error"
    errtype="No opened file"
   else
    status="requesting"
    rqstr=imgName
    requested="Save as"
   end
  elseif ch=="s" then
   status="selectingColor"
   selColor=1
   newColor={math.floor(color[1]/5)*5,math.floor(color[2]/5)*5,math.floor(color[3]/5)*5}
  elseif ch=="h" then
   status="requesting"
   rqstr=""
   requested="Hex code"
  end
 elseif status=="requesting" and string.len(rqstr)<10 and strch("ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789",ch) then
  rqstr=rqstr..ch
 end
 refresh()
end

function on.escapeKey()
 status="drawing"
 refresh()
end

function on.enterKey()
 if status=="selectingColor" then
  color=newColor
  status="drawing"
 elseif status=="requesting" then
  status="drawing"
  if requested=="Hex code" then 
   loadHexColor()
  elseif requested=="File name" then
   rqstr=string.lower(rqstr)
   loadFile()
  elseif requested=="Save as" then
   rqstr=string.lower(rqstr)
   saveFile()
  end
 elseif status=="error" then
  status="drawing"
 end
 refresh()
end

function on.arrowKey(ar)
 if status=="selectingColor" then
  if ar=="up" then 
   selColor=selColor-1
  elseif ar=="down" then 
   selColor=selColor+1
  elseif ar=="right" and newColor[selColor]<251 then 
   newColor[selColor]=newColor[selColor]+5
  elseif ar=="left" and newColor[selColor]>4 then 
   newColor[selColor]=newColor[selColor]-5
  end
  if selColor>3 then
   selColor=1
  elseif selColor<1 then
   selColor=3
  end
 end
 refresh()
end

Drawing.lua

Code: [Select]


--DRAWING
function drawColorSelect(gc)
 gc:setColorRGB(200,200,255)
 gc:fillRect(width()/2-75,height()/2-50,150,100)
 gc:setColorRGB(0,0,0)
 gc:fillRect(width()/2-75,height()/2-50,150,15)
 gc:setPen("thin","smooth")
 gc:drawRect(width()/2-75,height()/2-50,150,100)
 gc:setFont("sansserif","r",10)
 gc:setColorRGB(255,255,255)
 gc:drawString("Select your color",width()/2-73,height()/2-53,"top")
 gc:setColorRGB(0,0,0)
 gc:drawString("Red :",width()/2-73,height()/2-35,"top")
 gc:drawString("Green :",width()/2-73,height()/2-20,"top")
 gc:drawString("Blue :",width()/2-73,height()/2-5,"top")
 for i=0,63 do
  gc:setColorRGB(i*4,newColor[2],newColor[3])
  gc:fillRect(width()/2-23+i,height()/2-30,1,10)
  gc:setColorRGB(newColor[1],i*4,newColor[3])
  gc:fillRect(width()/2-23+i,height()/2-15,1,10)
  gc:setColorRGB(newColor[1],newColor[2],i*4)
  gc:fillRect(width()/2-23+i,height()/2,1,10)
 end
 gc:setColorRGB(0,0,0)
 gc:drawRect(width()/2-23,height()/2-46+selColor*15,64,11)
 for i=1,3 do
  gc:drawString(tostring(newColor[i]),width()/2+52,height()/2-50+i*15,"top")
  gc:fillRect(width()/2-24+newColor[i]/4,height()/2-47+i*15,3,14)
 end
 gc:setColorRGB(color[1],color[2],color[3])
 gc:fillRect(width()/2-70,height()/2+20,30,20)
 gc:setColorRGB(newColor[1],newColor[2],newColor[3])
 gc:fillRect(width()/2-28,height()/2+20,30,20)
 gc:setColorRGB(0,0,0)
 gc:drawRect(width()/2-70,height()/2+20,30,20)
 gc:drawRect(width()/2-28,height()/2+20,30,20)
 gc:drawString(mathTools.int2Hex(math.floor(newColor[1]/16))..mathTools.int2Hex(newColor[1]%16)..mathTools.int2Hex(math.floor(newColor[2]/16))..mathTools.int2Hex(newColor[2]%16)..mathTools.int2Hex(math.floor(newColor[3]/16))..mathTools.int2Hex(newColor[3]%16),width()/2+20,height()/2+20,"top")
 gc:drawString("Old     New",width()/2-65,height()/2+21,"top")
end

function drawRequest(gc,msg)
 gc:setColorRGB(200,200,255)
 gc:fillRect(width()/2-75,height()/2-25,150,50)
 gc:setColorRGB(0,0,0)
 gc:setPen("thin","smooth")
 gc:drawRect(width()/2-75,height()/2-25,150,50)
 gc:fillRect(width()/2-75,height()/2-25,150,15)
 gc:setFont("sansserif","r",10)
 gc:setColorRGB(255,255,255)
 gc:drawString(msg,width()/2-70,height()/2-28,"top")
 gc:setColorRGB(0,0,0)
 gc:drawRect(width()/2-70,height()/2,140,20)
 gc:drawString(rqstr,width()/2-65,height()/2,"top")
end

function drawError(gc)
 gc:setColorRGB(200,200,255)
 gc:fillRect(width()/2-75,height()/2-20,150,40)
 gc:setColorRGB(0,0,0)
 gc:setPen("thin","smooth")
 gc:drawRect(width()/2-75,height()/2-20,150,40)
 gc:fillRect(width()/2-75,height()/2-20,150,15)
 gc:setFont("sansserif","r",10)
 gc:setColorRGB(255,255,255)
 gc:drawString("Error",width()/2-73,height()/2-23,"top")
 gc:setColorRGB(0,0,0)
 gc:drawString(errtype,width()/2-70,height()/2-5,"top")
end

function on.paint(gc)
 gc:setColorRGB(color[1],color[2],color[3])
 gc:fillRect(0,0,20,15)
 gc:setColorRGB(0,0,0)
 gc:setPen("thin","smooth")
 gc:drawRect(0,0,20,15)
 gc:setFont("sansserif","r",10)
 gc:drawString(imgName.." ("..tostring(imgZoom*100).."%)",25,0,"top")
 if imgTable then
  imgTools.drawTable(gc,30,30)
 end
 if status=="selectingColor" then
  drawColorSelect(gc)
 elseif status=="requesting" then
  drawRequest(gc,requested)
 elseif status=="error" then
  drawError(gc)
 end
 gc:setColorRGB(0,0,0)
 gc:setFont("sansserif","r",8)
 gc:drawString("Lua Paintbrush - Par Loic Pujet",10,height()-12,"top")
end

ExtendeD · « **Reply #5 on:** August 06, 2011, 01:21:46 pm »

Nice tool Chockosta

Hayleia · « **Reply #6 on:** August 06, 2011, 01:55:26 pm »

This is a great tool ! Why don't I have an nspire ?! :'(

Quote from: Chockosta on August 06, 2011, 12:38:27 pm

It was supposed to be called Paintbrush, but Google told me that a MacOS software is already called "Paintbrush". Do you have any suggestions ?

Maybe a mix between MS Paint and Nspire that gives nSpaint ?

Jim Bauwens · « **Reply #7 on:** August 06, 2011, 02:32:17 pm »

Looks very nice!
Good to use with on calc editors

Quote

Thanks to Inspired Lua for this page !

I'm glad you liked it

I have actually wrote a better, simpler version, but haven't taken the time to upload it.

DJ Omnimaga · « **Reply #8 on:** August 06, 2011, 03:52:30 pm »

That's very great! Nice job so far!

Chockosta · « **Reply #9 on:** August 07, 2011, 11:01:22 am »

Draw and erase tools !
Tomorrow, it will be possible to create new images...

pianoman · « **Reply #10 on:** August 08, 2011, 03:05:20 pm »

This is absolutely amazing

Nice work, as usual!

Deep Toaster · « **Reply #11 on:** August 08, 2011, 03:07:35 pm »

Waoh, awesome! We're seriously short of on-calc Nspire tools right now.

critor · « **Reply #12 on:** August 08, 2011, 03:27:59 pm »

Quote from: Chockosta on August 07, 2011, 11:01:22 am

Draw and erase tools !

Did you update the 1st post tns attachment?
Unless I have a cache problem, it is byte to byte identic with the one I downloaded 2 days ago...

p2 · « **Reply #13 on:** August 09, 2011, 06:30:47 am »

Thanx, Chockosta!!!
Looks really great!!
It's exactly what I thought of!!

+1 (+4 wasn't possible...)

Spoiler For Chockosta:

BrownyTCat · « **Reply #14 on:** August 09, 2011, 11:43:25 am »

I just have a small suggestion that could possibly be added later. There's a boolean that returns true if the calc is color, but if it's greyscale it returns false, you could make only one slider for the grey level in the color selector.

Author Topic: [Lua] Image Editor (Read 44367 times)

Chockosta

[Lua] Image Editor

Adriweb

Re: [Lua] Image Editor

Chockosta

Re: [Lua] Image Editor

Adriweb

Re: [Lua] Image Editor

Chockosta

Re: [Lua] Image Editor

ExtendeD

Re: [Lua] Image Editor

Hayleia

Re: [Lua] Image Editor

Jim Bauwens

Re: [Lua] Image Editor

DJ Omnimaga

Re: [Lua] Image Editor

Chockosta

Re: [Lua] Image Editor

pianoman

Re: [Lua] Image Editor

Deep Toaster

Re: [Lua] Image Editor

critor

Re: [Lua] Image Editor

p2

Re: [Lua] Image Editor

BrownyTCat

Re: [Lua] Image Editor