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Author Topic: [Lua] Image Editor  (Read 44485 times)

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Offline Chockosta

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Re: [Lua] Image Editor
« Reply #75 on: January 06, 2012, 02:07:03 pm »
Some progress...
Now buttons work, and there is a draft of custom window layouts.

If you're interested, here is the code of the new sample :
Code: [Select]
--[[

window : {wtype,name,buttons,layout,size}
   --> wtype : "dialogBox","custom"
   --> size : {sizeX,sizeY} (only for custom)

buttons : {{"name",function1},{"name",function2},...}

layout : {{"type",...}}
   --> type : "label","textBox","colorSlider","list"

label : {text,x,y}

textBox : {text,x,y,sizeX,cursor}

colorSlider : {color,value,x,y}
   --> color : "red","green","blue"

list : {elements,scroll,x,y,sizeX,sizeY}

]]


--GUI GESTION
gui={}
gui.windows={}
gui.dialogBox={}
gui.custom={}
gui.resized=false

function gui.errorMessage(errorText)
 gui.addWindow("dialogBox","Error",{{"OK",function() gui.closeWindow() refresh() end}},errorText)
end

function gui.addWindow(windowType,windowName,windowButtons,windowLayout,windowSize)
 table.insert(gui.windows,{wtype=windowType,name=windowName,buttons=windowButtons,layout=windowLayout,size=windowSize})
 gui.focus=-1
end

function gui.closeWindow()
 table.remove(gui.windows)
 gui.focus=-1
end

function gui.nbWindows()
 return #gui.windows
end

function gui.current()
 return gui.windows[#gui.windows]
end

function gui.paint(gc)
 for i,e in pairs(gui.windows) do
  gui[e.wtype].paint(gc,e,i)
 end
 gui.resized=false
end

function gui.resize()
 gui.resized=true
end




--GUI DRAWING

function gui.dialogBox.paint(gc,dialogBox,windowID)
 local sizeX,sizeY
 if not dialogBox.size then
  gc:setFont("sansserif","r",10)
  sizeX=improvedStr.width(gc,dialogBox.layout)+24
  sizeY=improvedStr.height(gc,dialogBox.layout)+17
  gui.windows[windowID].size={sizeX,sizeY}
 else
  sizeX,sizeY=unpack(dialogBox.size)
 end
 gui.paintWindowBG(gc,dialogBox.name,sizeX,sizeY)
 gui.paintTextArea(gc,dialogBox.layout,sizeX,sizeY)
 gui.paintButtons(gc,dialogBox.buttons,sizeX,sizeY,windowID)
 if windowID==#gui.windows then
  gui.paintFocus(gc,gui.focus,dialogBox.buttons,dialogBox.layout,sizeX,sizeY)
 end
end

function gui.custom.paint(gc,window,windowID)
 gui.paintWindowBG(gc,window.name,window.size[1],window.size[2])
 gui.paintLayout(gc,window.layout,window.size[1],window.size[2],windowID)
 gui.paintButtons(gc,window.buttons,window.size[1],window.size[2],windowID)
 if windowID==#gui.windows then
  gui.paintFocus(gc,gui.focus,window.buttons,window.layout,window.size[1],window.size[2])
 end
end





function gui.paintLayout(gc,layout,sizeX,sizeY,windowID)
 local x,y=(width()-sizeX)/2,(height()-sizeY-15)/2
 for i,e in pairs(layout) do
  if e[1]=="textBox" then
   gui.paintTextBox(gc,e,x,y)
  elseif e[1]=="label" then
   gc:setFont("sansserif","r",10)
   gc:setColorRGB(0,0,0)
   gc:drawString(e.text,x+e.x,y+e.y,"top")
  elseif e[1]=="colorSlider" then
   gui.paintColorSlider(gc,e,x,y)
  end
 end
end

function gui.paintTextBox(gc,textBox,x,y)
 gc:setColorRGB(255,255,255)
 gc:fillRect(x+textBox.x,y+textBox.y,textBox.sizeX,22)
 gc:setColorRGB(0,0,0)
 gc:drawRect(x+textBox.x,y+textBox.y,textBox.sizeX,22)
 gc:drawString(string.sub(textBox.text,1,textBox.cursor-1).."|"..string.sub(textBox.text,textBox.cursor),x+textBox.x+3,y+textBox.y,"top")
end

function gui.paintColorSlider(gc,slider,x,y)
 gc:setColorRGB(0,0,0)
 gc:fillRect(x+slider.x,y+slider.y,68,14)
 for i=0,63 do
  gc:setColorRGB(slider.color=="red" and i*4 or color[1],slider.color=="green" and i*4 or color[2],slider.color=="blue" and i*4 or color[3])
  gc:fillRect(x+slider.x+i+2,y+2+slider.y,1,10)
 end
 gc:setColorRGB(0,0,0)
 gc:fillRect(x+slider.x+slider.value/4+1,y+slider.y,1,12)
 gc:fillRect(x+slider.x+slider.value/4+3,y+slider.y,1,12)
end

function gui.paintButtons(gc,buttons,sizeX,sizeY,windowID)
 local x,y=(width()-sizeX)/2,(height()-sizeY-15)/2
 if (not buttons[1].size) or gui.resized then
  local totalSize,size,pos=-7,{},{}
  for i,e in pairs(buttons) do
   size[i]=gc:getStringWidth(e[1])+10
   totalSize=totalSize+size[i]+7
  end
  pos[1]=(width()-totalSize)/2
  for i=2,#buttons do
   pos[i]=pos[i-1]+size[i-1]+7
  end
  for i,e in pairs(buttons) do
   gui.windows[windowID].buttons[i].size=size[i]
   gui.windows[windowID].buttons[i].pos=pos[i]
  end
  buttons=gui.windows[windowID].buttons
 end
 for i,e in pairs(buttons) do
  gc:setColorRGB(136,136,136)
  gc:fillRect(e.pos,y+sizeY+9,e.size,23)
  gc:fillRect(e.pos+1,y+sizeY+8,e.size-2,25)
  gc:fillRect(e.pos+2,y+sizeY+7,e.size-4,27)
  gc:setColorRGB(255,255,255)
  gc:fillRect(e.pos+2,y+sizeY+9,e.size-4,23)
  gc:setColorRGB(0,0,0)
  gc:drawString(e[1],e.pos+5,y+sizeY+20,"middle")
 end
end

function gui.paintTextArea(gc,text,sizeX,sizeY)
 local x,y=(width()-sizeX)/2,(height()-sizeY-15)/2
 if isCX() then
  gc:setColorRGB(128,128,128)
 else
  gc:setColorRGB(255,255,255)
 end
 gc:drawRect(x+6,y+6,sizeX-13,sizeY-13)
 gc:setColorRGB(0,0,0)
 improvedStr.draw(gc,text,x+12,y+9)
end

function gui.paintWindowBG(gc,name,sizeX,sizeY)
 local x,y=(width()-sizeX)/2,(height()-sizeY-15)/2
 if isCX() then
  gc:setColorRGB(100,100,100)
 else
  gc:setColorRGB(200,200,200)
 end
 gc:fillRect(x-1,y-23,sizeX+4,sizeY+65)
 gc:fillRect(x,y-22,sizeX+4,sizeY+65)
 gc:fillRect(x+1,y-21,sizeX+4,sizeY+65)
 if isCX() then
  gc:setColorRGB(128,128,128)
 else
  gc:setColorRGB(0,0,0)
 end
 gc:fillRect(x-2,y-24,sizeX+4,sizeY+65)
 if isCX() then
  for i=1,22 do
   gc:setColorRGB(32+i*3,32+i*3,32+i*3)
   gc:fillRect(x,y+i-23,sizeX,1)
  end
 else
  gc:setColorRGB(0,0,0)
  gc:fillRect(x,y-22,sizeX,22)
 end
 gc:setColorRGB(255,255,255)
 gc:setFont("sansserif","r",10)
 gc:drawString(name,x+2,y-9,"baseline")
 gc:setColorRGB(224,224,224)
 gc:fillRect(x,y,sizeX,sizeY+39)
 gc:setColorRGB(128,128,128)
 gc:fillRect(x+6,y+sizeY,sizeX-12,2)
end

function gui.paintFocus(gc,focus,buttons,layout,sizeX,sizeY)
 local x,y=(width()-sizeX)/2,(height()-sizeY-15)/2
 if focus>0 then
  if type(layout)=="table" then

  end
 elseif focus<0 then
  local button=buttons[-focus]
  if isCX() then
   gc:setColorRGB(50,150,190)
  else
   gc:setColorRGB(0,0,0)
  end
  gc:drawRect(button.pos-3,y+sizeY+4,button.size+5,32)
  gc:drawRect(button.pos-2,y+sizeY+5,button.size+3,30)
 end
end




--GUI EVENTS
function gui.mouseDown(xPos,yPos)
 if gui.nbWindows()>=1 then
  local window=gui.current()
  if window.size then
   local sizeX,sizeY=unpack(window.size)
   local x,y=(width()-sizeX)/2,(height()-sizeY-15)/2
   if xPos>x and xPos<x+sizeX and yPos>y then
    if yPos<y+sizeY then
     gui.setFocus(xPos,yPos,window)
    elseif yPos<y+sizeY+39 then
     gui.buttonDown(xPos,yPos,window.buttons)
    end
   end
  end
 end
end

function gui.buttonDown(x,y,buttons)
 for i,e in pairs(buttons) do
  if x>e.pos and x<e.pos+e.size then
   gui.focus=-i
   e[2]()
  end
 end
end

function gui.setFocus(x,y,window)
 
end


--MULTIPLE LINE STRING GESTION
improvedStr={}

function improvedStr.draw(gc,str,x,y)
 str=tostring(str)
 local table1={improvedStr.cut(str)}
 for i,e in pairs(table1) do
  gc:drawString(e,x,y+(i-1)*gc:getStringHeight("a"),"top")
 end
end

function improvedStr.width(gc,str)
 str=tostring(str)
 local table1={improvedStr.cut(str)}
 local table2={}
 for i,e in pairs(table1) do
  table2[i]=gc:getStringWidth(e)
 end
 table.sort(table2)
 return table2[#table2]
end

function improvedStr.height(gc,str)
 str=tostring(str)
 local table1={improvedStr.cut(str)}
 return gc:getStringHeight("a")*#table1
end

function improvedStr.cut(str)
 local table1,finished={},false
 local posStart,posEnd,last=1,0,1
 while not finished do
  posStart,posEnd=string.find(str,"\n",posEnd+1)
  if posStart then
   table.insert(table1,string.sub(str,last,posStart-1))
   last=posEnd+1
  else
   table.insert(table1,string.sub(str,last))
   finished=true
  end
 end
 return unpack(table1)
end
« Last Edit: January 06, 2012, 02:07:26 pm by Chockosta »
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Offline Nick

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    • Nick Steen
Re: [Lua] Image Editor
« Reply #76 on: January 06, 2012, 02:33:58 pm »
wow, amazing.. those look really native :o congratz
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Offline AzNg0d1030

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Re: [Lua] Image Editor
« Reply #77 on: January 06, 2012, 08:25:27 pm »
Dang I can't wait to update my 0.6 to this one you're working on.  Seems amazing!  All these little additions are making this one great app
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Offline Chockosta

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Re: [Lua] Image Editor
« Reply #78 on: January 20, 2012, 04:37:49 pm »
I finished the GUI engine, it now handles mouse events and everything. (almost)
So now I start to write new functions !

If you are interested, here is the source code of a demo :
Code: [Select]
--[[

window : {wtype,name,buttons,layout,size}
   --> wtype : "dialogBox","custom"
   --> size : {sizeX,sizeY} (only for custom)

buttons : {{"name",function1},{"name",function2},...}

layout : {{"type",...}}
   --> type : "label","textBox","colorSlider","list"

label : {text,x,y}

textBox : {text,x,y,sizeX,cursor}

colorSlider : {color,value,x,y}
   --> color : "red","green","blue"

list : {elements,scroll,x,y,sizeX,sizeY,selected}

]]


--GUI GESTION
gui={}
gui.windows={}
gui.dialogBox={}
gui.custom={}
gui.textBox={}
gui.colorSlider={}
gui.list={}
gui.resized=false
gui.img={}
gui.img.upButton=image.new("\011\000\000\000\010\000\000\000\000\000\000\000\022\000\000\000\016\000\001\0001\1981\1981\1981\1981\1981\1981\1981\1981\1981\1981\1981\198\255\255\255\255\255\255\255\255\156\243\255\255\255\255\255\255\255\2551\1981\198\255\255\255\255\255\255\214\218\000\128\214\218\255\255\255\255\255\2551\1981\198\255\255\255\255\247\222B\136\000\128B\136\247\222\255\255\255\2551\1981\198\255\255\247\222B\136!\132\000\128!\132B\136\247\222\255\2551\1981\198\247\222B\136!\132B\136R\202B\136!\132B\136\247\2221\1981\198\132\144B\136B\136\247\222\255\255\247\222B\136B\136\132\1441\1981\198\156\243\132\144\247\222\255\255\255\255\255\255\247\222\132\144\189\2471\1981\198\255\255\222\251\255\255\255\255\255\255\255\255\255\255\222\251\255\2551\1981\1981\1981\1981\1981\1981\1981\1981\1981\1981\1981\198")
gui.img.downButton=image.new("\011\000\000\000\010\000\000\000\000\000\000\000\022\000\000\000\016\000\001\0001\1981\1981\1981\1981\1981\1981\1981\1981\1981\1981\1981\198\255\255\222\251\255\255\255\255\255\255\255\255\255\255\222\251\255\2551\1981\198\156\243\132\144\247\222\255\255\255\255\255\255\247\222\132\144\189\2471\1981\198\132\144B\136B\136\247\222\255\255\247\222B\136B\136\132\1441\1981\198\247\222B\136!\132B\136R\202B\136!\132B\136\247\2221\1981\198\255\255\247\222B\136!\132\000\128!\132B\136\247\222\255\2551\1981\198\255\255\255\255\247\222B\136\000\128B\136\247\222\255\255\255\2551\1981\198\255\255\255\255\255\255\214\218\000\128\214\218\255\255\255\255\255\2551\1981\198\255\255\255\255\255\255\255\255\156\243\255\255\255\255\255\255\255\2551\1981\1981\1981\1981\1981\1981\1981\1981\1981\1981\1981\198")


--GUI UTILS


function gui.errorMessage(errorText)
 gui.addWindow("dialogBox","Error",{{"OK",function() gui.closeWindow() refresh() end}},errorText)
end

function gui.addWindow(windowType,windowName,windowButtons,windowLayout,windowSize)
 table.insert(gui.windows,{wtype=windowType,name=windowName,buttons=windowButtons,layout=windowLayout,size=windowSize})
 gui.focus=-1
 refresh()
end

function gui.closeWindow()
 table.remove(gui.windows)
 gui.focus=-1
 refresh()
end

function gui.nbWindows()
 return #gui.windows
end

function gui.current()
 return gui.windows[#gui.windows]
end

function gui.refreshCurrent()
 local current=gui.current()
 local sizeX,sizeY=unpack(current.size)
 local xPos,yPos=(width()-sizeX)/2,(height()-sizeY-15)/2
 refresh(xPos,yPos,sizeX,sizeY+39)
end



--GUI EVENTS
function gui.mouseDown(xPos,yPos)
 if gui.nbWindows()>=1 then
  local window=gui.current()
  if window.size then
   local sizeX,sizeY=unpack(window.size)
   local x,y=(width()-sizeX)/2,(height()-sizeY-15)/2
   if xPos>x and xPos<x+sizeX and yPos>y then
    if yPos<y+sizeY and gui.current().wtype=="custom" then
     gui.setFocus(xPos-x,yPos-y,window)
    elseif yPos>y+sizeY and yPos<y+sizeY+39 then
     gui.buttonDown(xPos,yPos,window.buttons)
    end
   end
  end
 end
end

function gui.paint(gc)
 for i,e in pairs(gui.windows) do
  gui[e.wtype].paint(gc,e,i)
 end
 gui.resized=false
end

function gui.resize()
 gui.resized=true
end

function gui.tabKey()
 if gui.nbWindows()>0 then
  gui.moveFocus(1)
  gui.refreshCurrent()
 end
end

function gui.backtabKey()
 if gui.nbWindows()>0 then
  gui.moveFocus(-1)
  gui.refreshCurrent()
 end
end

function gui.arrowKey(arrow)
 if gui.nbWindows()>0 then
  if gui.focus<0 then
   if arrow=="left" then
    gui.moveFocus(1)
    gui.refreshCurrent()
   elseif arrow=="right" then
    gui.moveFocus(-1)
    gui.refreshCurrent()
   end
  elseif gui.focus>0 then
   local currentElem=gui.current().layout[gui.focus]
   if gui[currentElem[1]].arrowKey then
    gui[currentElem[1]].arrowKey(arrow,currentElem)
    gui.refreshCurrent()
   end
  end
 end
end

function gui.enterKey()
 if gui.nbWindows()>0 then
  if gui.focus<0 then
   gui.current().buttons[-gui.focus][2]()
  end
 end
end

function gui.charIn(char)
 if gui.nbWindows()>0 then
  if gui.focus>0 then
   local currentElem=gui.current().layout[gui.focus]
   if gui[currentElem[1]].charIn then
    gui[currentElem[1]].charIn(char,currentElem)
    gui.refreshCurrent()
   end
  end
 end
end

function gui.backspaceKey()
 if gui.nbWindows()>0 then
  if gui.focus>0 then
   local currentElem=gui.current().layout[gui.focus]
   if gui[currentElem[1]].backspaceKey then
    gui[currentElem[1]].backspaceKey(currentElem)
    gui.refreshCurrent()
   end
  end
 end
end

function gui.escapeKey()
 if gui.nbWindows()>0 then
  gui.closeWindow()
 end
end



--GUI LAYOUT ELEMENTS EVENTS

function gui.textBox.charIn(char,textBox)
 if string.len(char)==1 then
  textBox.prev={textBox.text,textBox.cursor}
  textBox.text=string.usub(textBox.text,1,textBox.cursor)..char..string.usub(textBox.text,textBox.cursor+1)
  textBox.cursor=textBox.cursor+1
 end
end

function gui.textBox.arrowKey(arrow,textBox)
 if arrow=="right" and textBox.cursor<string.len(textBox.text) then
  textBox.cursor=textBox.cursor+1
 elseif arrow=="left" and textBox.cursor>0 then
  textBox.cursor=textBox.cursor-1
 end
end

function gui.textBox.mouseDown(textBox,x)
 textBox.setCursor=x-2
end

function gui.textBox.backspaceKey(textBox)
 if string.len(textBox.text)>0 then
  textBox.text=string.usub(textBox.text,1,textBox.cursor-1)..string.usub(textBox.text,textBox.cursor+1)
  textBox.cursor=textBox.cursor-1
 end
end

function gui.colorSlider.arrowKey(arrow,slider)
 if arrow=="right" then
  slider.value=slider.value<250 and slider.value+5 or 255
 elseif arrow=="left" then
  slider.value=slider.value>5 and slider.value-5 or 0
 end
end

function gui.colorSlider.mouseDown(slider,x)
 x=(x-2)*4
 x=x>0 and x or 0
 x=x<255 and x or 255
 slider.value=x
end

function gui.list.arrowKey(arrow,list)
 if arrow=="up" and list.selected>1 then
  list.selected=list.selected-1
 elseif arrow=="down" and list.selected<#list.elements then
  list.selected=list.selected+1
 end
end

function gui.list.mouseDown(list,x,y)
 if x>list.sizeX-17 then
  if y>list.sizeY/2 and list.selected<#list.elements then
   list.selected=list.selected+1
  elseif y<list.sizeY/2 and list.selected>1 then
   list.selected=list.selected-1
  end
 else
  list.setSelection=y
 end
end


--GUI MISC FUNCTIONS

function gui.moveFocus(nb)
 local currentWindow=gui.current()
 local test=false
 local originalFocus=gui.focus
 nb=gui.focus<0 and -nb or nb
 gui.focus=gui.focus+nb
 if #currentWindow.buttons==0 then
  gui.focus=-1
  test=true
 end
 while not test do
  if gui.focus<0 then
   if -gui.focus<=#currentWindow.buttons then
    test=true
   else
    gui.focus=1
    nb=1
   end
  elseif gui.focus==0 then
   if originalFocus<0 then
    if currentWindow.wtype=="dialogBox" then
     gui.focus=-#currentWindow.buttons
     test=true
    elseif #currentWindow.layout==0 then
     gui.focus=-#currentWindow.buttons
     test=true
    else
     gui.focus=#currentWindow.layout
    end
   else
    gui.focus=nb<0 and -1 or 1
   end
  else
   if currentWindow.wtype=="dialogBox" then
    test=true
    gui.focus=-1
   elseif currentWindow.wtype=="custom" then
    if gui.focus<=#currentWindow.layout then
     if currentWindow.layout[gui.focus][1]=="label" then
      gui.focus=gui.focus+(nb<0 and -1 or 1)
     else
      test=true
     end
    else
     test=true
     gui.focus=-1
    end
   end
  end
 end
end

function gui.buttonDown(x,y,buttons)
 for i,e in pairs(buttons) do
  if x>e.pos and x<e.pos+e.size then
   gui.focus=-i
   e[2]()
  end
 end
end

function gui.setFocus(x,y,window)
 for i,e in pairs(window.layout) do
  if e[1]=="list" then
   if x>e.x and y>e.y and x<e.x+e.sizeX and y<e.y+e.sizeY then
    gui.focus=i
    gui.list.mouseDown(e,x-e.x,y-e.y)
   end
  elseif e[1]=="textBox" then
   if x>e.x and y>e.y and x<e.x+e.sizeX and y<e.y+22 then
    gui.focus=i
    gui.textBox.mouseDown(e,x-e.x,y-e.y)
   end
  elseif e[1]=="colorSlider" then
   if x>e.x and y>e.y and x<e.x+68 and y<e.y+20 then
    gui.focus=i
    gui.colorSlider.mouseDown(e,x-e.x,y-e.y)
   end
  end
 end
 gui.refreshCurrent()
end



--GUI DRAWING

function gui.dialogBox.paint(gc,dialogBox,windowID)
 local sizeX,sizeY
 if not dialogBox.size then
  gc:setFont("sansserif","r",10)
  sizeX=improvedStr.width(gc,dialogBox.layout)+24
  sizeY=improvedStr.height(gc,dialogBox.layout)+17
  gui.windows[windowID].size={sizeX,sizeY}
 else
  sizeX,sizeY=unpack(dialogBox.size)
 end
 gui.paintWindowBG(gc,dialogBox.name,sizeX,sizeY)
 gui.paintTextArea(gc,dialogBox.layout,sizeX,sizeY)
 gui.paintButtons(gc,dialogBox.buttons,sizeX,sizeY,windowID)
end

function gui.custom.paint(gc,window,windowID)
 gui.paintWindowBG(gc,window.name,window.size[1],window.size[2])
 gui.paintLayout(gc,window.layout,window.size[1],window.size[2])
 gui.paintButtons(gc,window.buttons,window.size[1],window.size[2],windowID)
end





function gui.paintLayout(gc,layout,sizeX,sizeY)
 local x,y=(width()-sizeX)/2,(height()-sizeY-15)/2
 for i,e in pairs(layout) do
  if e[1]=="textBox" then
   gui.paintTextBox(gc,e,x,y,gui.focus==i)
  elseif e[1]=="label" then
   gui.paintLabel(gc,e,x,y)
  elseif e[1]=="colorSlider" then
   gui.paintColorSlider(gc,e,x,y,gui.focus==i)
  elseif e[1]=="list" then
   gui.paintList(gc,e,x,y,gui.focus==i)
  end
 end
end

function gui.paintLabel(gc,label,x,y)
 gc:setFont("sansserif","r",10)
 if label.text=="colorLabel" then
  gc:setColorRGB(0,0,0)
  gc:fillRect(x+label.x,y+label.y,30,20)
  gc:setColorRGB(unpack(color))
  gc:fillRect(x+label.x+1,y+label.y+1,28,18)
 else
  gc:setColorRGB(0,0,0)
  gc:drawString(label.text,x+label.x,y+label.y,"top")
 end
end

function gui.paintTextBox(gc,textBox,x,y,selected)
 if gc:getStringWidth(textBox.text)>textBox.sizeX-5 then
  textBox.prev=textBox.prev or {"",0}
  textBox.text,textBox.cursor=unpack(textBox.prev)
 end
 if textBox.setCursor then
  textBox.cursor=string.len(textBox.text)
  for i=string.len(textBox.text),1,-1 do
   if gc:getStringWidth(string.sub(textBox.text,1,i))>textBox.setCursor then
    textBox.cursor=i-1
   end
  end
  textBox.setCursor=nil
 end
 if selected then
  gc:setColorRGB(50,150,190)
  gc:fillRect(x+textBox.x-2,y+textBox.y-2,textBox.sizeX+5,27)
 end
 gc:setColorRGB(255,255,255)
 gc:fillRect(x+textBox.x,y+textBox.y,textBox.sizeX,22)
 gc:setColorRGB(0,0,0)
 gc:drawRect(x+textBox.x,y+textBox.y,textBox.sizeX,22)
 gc:setFont("sansserif","r",10)
 gc:drawString(textBox.text,x+textBox.x+3,y+textBox.y+1,"top")
 if selected then
  gc:fillRect(gc:getStringWidth(string.usub(textBox.text,1,textBox.cursor))+x+textBox.x+3,y+textBox.y+2,1,19)
 end
end

function gui.paintColorSlider(gc,slider,x,y,selected)
 if selected then
  gc:setColorRGB(50,150,190)
  gc:fillRect(x+slider.x-2,y+slider.y-2,72,24)
 end
 gc:setColorRGB(0,0,0)
 gc:fillRect(x+slider.x,y+slider.y,68,20)
 for i=0,63 do
  gc:setColorRGB(slider.color=="red" and i*4 or color[1],slider.color=="green" and i*4 or color[2],slider.color=="blue" and i*4 or color[3])
  gc:fillRect(x+slider.x+i+2,y+2+slider.y,1,16)
 end
 if isCX() then
  gc:setColorRGB(255-slider.value,255-slider.value,255-slider.value)
 else
  gc:setColorRGB(255,255,255)
 end
 gc:fillRect(x+slider.x+slider.value/4+1,y+slider.y-2,3,24)
end

function gui.paintList(gc,list,x,y,selected)
 if selected then
  gc:setColorRGB(50,150,190)
  gc:fillRect(x+list.x-2,y+list.y-2,list.sizeX+4,list.sizeY+4)
 end
 gc:setColorRGB(0,0,0)
 gc:fillRect(list.x+x,list.y+y,list.sizeX,list.sizeY)
 gc:setColorRGB(255,255,255)
 gc:fillRect(list.x+1+x,list.y+1+y,list.sizeX-2,list.sizeY-2)
 gc:setColorRGB(100,100,100)
 gc:drawImage(gui.img.upButton,list.x+x+list.sizeX-14,y+list.y+3)
 gc:drawImage(gui.img.downButton,list.x+x+list.sizeX-14,y+list.y+list.sizeY-13)
 gc:drawRect(list.x+x+list.sizeX-14,y+list.y+15,10,list.sizeY-31)
 gc:setFont("sansserif","r",10)
 local fontHeight=gc:getStringHeight("a")
 local capacity=math.floor(list.sizeY/fontHeight)
 if list.setSelection then
  list.selected=math.floor(list.setSelection/fontHeight)+1+list.scroll
  list.selected=list.selected<#list.elements and list.selected or #list.elements
  list.setSelection=nil
 end
 if list.selected<list.scroll+1 then
  list.scroll=list.selected-1
 elseif list.selected>list.scroll+capacity then
  list.scroll=list.selected-capacity
 end
 if list.scroll>#list.elements-capacity then
  local scroll=#list.elements-capacity
  scroll=scroll<0 and 0 or scroll
  list.scroll=scroll
 end
 if #list.elements*fontHeight>list.sizeY then
  local scrollBarSize=(list.sizeY-31)*list.sizeY/(#list.elements*fontHeight)
  gc:fillRect(list.x+x+list.sizeX-14,y+list.y+15+list.scroll*(list.sizeY-31)/#list.elements,11,scrollBarSize)
 end
 gc:setColorRGB(0,0,0)
 local step=0
 for i=list.scroll+1,list.scroll+capacity do
  if list.elements[i] then
   if list.selected==i then
    gc:setColorRGB(50,150,190)
    gc:fillRect(list.x+x+1,list.y+y+step*fontHeight+1,list.sizeX-16,fontHeight-2)
    gc:setColorRGB(0,0,0)
   end
   gc:drawString(list.elements[i],list.x+x+3,list.y+y+step*fontHeight,"top")
   step=step+1
  end
 end
end

function gui.paintButtons(gc,buttons,sizeX,sizeY,windowID)
 local x,y=(width()-sizeX)/2,(height()-sizeY-15)/2
 gc:setFont("sansserif","r",10)
 if (not buttons[1].size) or gui.resized then
  local totalSize,size,pos=-7,{},{}
  for i,e in pairs(buttons) do
   size[i]=gc:getStringWidth(e[1])+10
   totalSize=totalSize+size[i]+7
  end
  pos[1]=(width()-totalSize)/2
  for i=2,#buttons do
   pos[i]=pos[i-1]+size[i-1]+7
  end
  for i,e in pairs(buttons) do
   gui.windows[windowID].buttons[i].size=size[i]
   gui.windows[windowID].buttons[i].pos=pos[i]
  end
  buttons=gui.windows[windowID].buttons
 end
 for i,e in pairs(buttons) do
  gc:setColorRGB(136,136,136)
  gc:fillRect(e.pos,y+sizeY+9,e.size,23)
  gc:fillRect(e.pos+1,y+sizeY+8,e.size-2,25)
  gc:fillRect(e.pos+2,y+sizeY+7,e.size-4,27)
  gc:setColorRGB(255,255,255)
  gc:fillRect(e.pos+2,y+sizeY+9,e.size-4,23)
  gc:setColorRGB(0,0,0)
  gc:drawString(e[1],e.pos+5,y+sizeY+20,"middle")
 end
 if gui.focus<0 and windowID==gui.nbWindows() then
  local button=buttons[-gui.focus]
  if isCX() then
   gc:setColorRGB(50,150,190)
  else
   gc:setColorRGB(0,0,0)
  end
  gc:drawRect(button.pos-3,y+sizeY+4,button.size+5,32)
  gc:drawRect(button.pos-2,y+sizeY+5,button.size+3,30)
 end
end

function gui.paintTextArea(gc,text,sizeX,sizeY)
 local x,y=(width()-sizeX)/2,(height()-sizeY-15)/2
 if isCX() then
  gc:setColorRGB(128,128,128)
 else
  gc:setColorRGB(255,255,255)
 end
 gc:drawRect(x+6,y+6,sizeX-13,sizeY-13)
 gc:setColorRGB(0,0,0)
 gc:setFont("sansserif","r",10)
 improvedStr.draw(gc,text,x+12,y+9)
end

function gui.paintWindowBG(gc,name,sizeX,sizeY)
 local x,y=(width()-sizeX)/2,(height()-sizeY-15)/2
 if isCX() then
  gc:setColorRGB(100,100,100)
 else
  gc:setColorRGB(200,200,200)
 end
 gc:fillRect(x-1,y-23,sizeX+4,sizeY+65)
 gc:fillRect(x,y-22,sizeX+4,sizeY+65)
 gc:fillRect(x+1,y-21,sizeX+4,sizeY+65)
 if isCX() then
  gc:setColorRGB(128,128,128)
 else
  gc:setColorRGB(0,0,0)
 end
 gc:fillRect(x-2,y-24,sizeX+4,sizeY+65)
 if isCX() then
  for i=1,22 do
   gc:setColorRGB(32+i*3,32+i*3,32+i*3)
   gc:fillRect(x,y+i-23,sizeX,1)
  end
 else
  gc:setColorRGB(0,0,0)
  gc:fillRect(x,y-22,sizeX,22)
 end
 gc:setColorRGB(255,255,255)
 gc:setFont("sansserif","r",10)
 gc:drawString(name,x+2,y-9,"baseline")
 gc:setColorRGB(224,224,224)
 gc:fillRect(x,y,sizeX,sizeY+39)
 gc:setColorRGB(128,128,128)
 gc:fillRect(x+6,y+sizeY,sizeX-12,2)
end





--MULTIPLE LINE STRING GESTION
improvedStr={}

function improvedStr.draw(gc,str,x,y)
 str=tostring(str)
 local table1={improvedStr.cut(str)}
 for i,e in pairs(table1) do
  gc:drawString(e,x,y+(i-1)*gc:getStringHeight("a"),"top")
 end
end

function improvedStr.width(gc,str)
 str=tostring(str)
 local table1={improvedStr.cut(str)}
 local table2={}
 for i,e in pairs(table1) do
  table2[i]=gc:getStringWidth(e)
 end
 table.sort(table2)
 return table2[#table2]
end

function improvedStr.height(gc,str)
 str=tostring(str)
 local table1={improvedStr.cut(str)}
 return gc:getStringHeight("a")*#table1
end

function improvedStr.cut(str)
 local table1,finished={},false
 local posStart,posEnd,last=1,0,1
 while not finished do
  posStart,posEnd=string.find(str,"\n",posEnd+1)
  if posStart then
   table.insert(table1,string.sub(str,last,posStart-1))
   last=posEnd+1
  else
   table.insert(table1,string.sub(str,last))
   finished=true
  end
 end
 return unpack(table1)
end


















color={0,255,0}
 
function width() return platform.window:width() end
function height() return platform.window:height() end
function isCX() return platform.isColorDisplay() end
function refresh(x,y,width,height) platform.window:invalidate(x,y,width,height) end
 
function openCustom()
 gui.addWindow("custom","custom",{{"Close",function() gui.closeWindow() end}},{{"label",text="Hello !",x=15,y=5},{"textBox",text="type here",cursor=3,x=10,y=30,sizeX=80},{"colorSlider",color="red",value=200,x=15,y=70},{"list",x=100,y=10,sizeX=70,sizeY=80,scroll=0,selected=1,elements={"elem a","elem b","elem c","elem d","elem e","elem f","another","...","Blue","Yellow","Green"}}},{200,100})
end

gui.addWindow("dialogBox","Title",{{"Error message",function() gui.errorMessage("Error test") end},{"Open custom window",function() openCustom() end}},"This text shows multi-line text functions :\nLorem ipsum dolor sit amet\n...")

function on.paint(gc)
 gui.paint(gc)
end

function on.mouseDown(x,y)
 gui.mouseDown(x,y)
end

function on.resize()
 gui.resize()
end

function on.tabKey()
 gui.tabKey()
end

function on.backtabKey()
 gui.backtabKey()
end

function on.enterKey()
 gui.enterKey()
end

function on.arrowKey(ar)
 gui.arrowKey(ar)
end

function on.charIn(ch)
 gui.charIn(ch)
end

function on.escapeKey()
 gui.escapeKey()
end

function on.backspaceKey()
 gui.backspaceKey()
endAnd a screenie is attached.
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Offline Deep Toaster

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Re: [Lua] Image Editor
« Reply #79 on: January 27, 2012, 06:46:55 pm »
That UI looks great ... almost native :o Nice job! Should the titles be shifted over a bit, though?
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Offline Chockosta

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Re: [Lua] Image Editor
« Reply #80 on: January 28, 2012, 06:59:34 am »
You're right, I just modified that.

Right now I'm busy integrating it to nSpaint...
It should be released next week.
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Offline apcalc

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Re: [Lua] Image Editor
« Reply #81 on: January 29, 2012, 08:43:34 pm »
Quote from: Deep Thought on January 27, 2012, 06:46:55 pm
That UI looks great ... almost native :o Nice job! Should the titles be shifted over a bit, though?

Agreed, it looks great! ;)
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Offline Chockosta

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Re: [Lua] Image Editor
« Reply #82 on: April 11, 2012, 12:33:28 pm »
I don't know if anyone still use this, but I just finished it.
(I spent too much time on this to give up)

So, here is nSpaint 0.7. It features :

-The same tools and filters as in nSpaint 0.6
-A native-like GUI (in nAnima too)
-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:


« Last Edit: April 11, 2012, 12:34:38 pm by Chockosta »
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Offline Jonius7

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Re: [Lua] Image Editor
« Reply #83 on: April 11, 2012, 12:38:59 pm »
Wow I was definitely not aware of this. This looks mega useful and very graphical too. How do you get those dialogue boxes up?
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Offline Chockosta

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Re: [Lua] Image Editor
« Reply #84 on: April 11, 2012, 12:46:45 pm »
I created a GUI lib which imitates TI's one...
But if you want to use it, I have to warn you : It will not be easy at all to use in your code.
Here is its code :
Code: [Select]

----------------------------------------------------------------------------------------------------
------------------------  Nspaint GUI engine by Loic Pujet (Chockosta) -----------------------------
----------------------------------------------------------------------------------------------------

--[[
window : {wtype,name,buttons,layout,size}
   --> wtype : "dialogBox","custom"
   --> size : {sizeX,sizeY} (only for custom)

buttons : {{"name",function1},{"name",function2},...}

layout : {{"type",...}}
   --> type : "label","textBox","colorSlider","list"

label : {text,x,y,color}
   --> if color is given, a color label is displayed

textBox : {text,x,y,sizeX,cursor,func}

colorSlider : {color,value,x,y,func}
   --> color : "red","green","blue"

list : {elements,scroll,x,y,sizeX,sizeY,selected,func}  ]]


--GUI DATA
gui={}
gui.windows={}
gui.dialogBox={}
gui.custom={}
gui.textBox={}
gui.colorSlider={}
gui.list={}
gui.resized=false
gui.img={}
gui.img.upButton=image.new("\011\000\000\000\010\000\000\000\000\000\000\000\022\000\000\000\016\000\001\0001\1981\1981\1981\1981\1981\1981\1981\1981\1981\1981\1981\198\255\255\255\255\255\255\255\255\156\243\255\255\255\255\255\255\255\2551\1981\198\255\255\255\255\255\255\214\218\000\128\214\218\255\255\255\255\255\2551\1981\198\255\255\255\255\247\222B\136\000\128B\136\247\222\255\255\255\2551\1981\198\255\255\247\222B\136!\132\000\128!\132B\136\247\222\255\2551\1981\198\247\222B\136!\132B\136R\202B\136!\132B\136\247\2221\1981\198\132\144B\136B\136\247\222\255\255\247\222B\136B\136\132\1441\1981\198\156\243\132\144\247\222\255\255\255\255\255\255\247\222\132\144\189\2471\1981\198\255\255\222\251\255\255\255\255\255\255\255\255\255\255\222\251\255\2551\1981\1981\1981\1981\1981\1981\1981\1981\1981\1981\1981\198")
gui.img.downButton=image.new("\011\000\000\000\010\000\000\000\000\000\000\000\022\000\000\000\016\000\001\0001\1981\1981\1981\1981\1981\1981\1981\1981\1981\1981\1981\198\255\255\222\251\255\255\255\255\255\255\255\255\255\255\222\251\255\2551\1981\198\156\243\132\144\247\222\255\255\255\255\255\255\247\222\132\144\189\2471\1981\198\132\144B\136B\136\247\222\255\255\247\222B\136B\136\132\1441\1981\198\247\222B\136!\132B\136R\202B\136!\132B\136\247\2221\1981\198\255\255\247\222B\136!\132\000\128!\132B\136\247\222\255\2551\1981\198\255\255\255\255\247\222B\136\000\128B\136\247\222\255\255\255\2551\1981\198\255\255\255\255\255\255\214\218\000\128\214\218\255\255\255\255\255\2551\1981\198\255\255\255\255\255\255\255\255\156\243\255\255\255\255\255\255\255\2551\1981\1981\1981\1981\1981\1981\1981\1981\1981\1981\1981\198")



--------------------------------------------------------------------------------------------------------------
--------------------------------------------- USER FUNCTIONS -------------------------------------------------
--------------------------------------------------------------------------------------------------------------

function gui.errorMessage(errorText)
 gui.addWindow("dialogBox","Error",{{"OK",function() gui.closeWindow() end}},errorText)
end

function gui.addTextWindow(title,text)
 gui.addWindow("dialogBox",title,{},text)
end

function gui.addCustomWindow(title,width,height)
 gui.addWindow("custom",title,{},{},{width,height})
end

function gui.addButton(text,buttonFunction)
 table.insert(gui.current().buttons,{text,buttonFunction})
end

function gui.addTextBox(xPos,yPos,width,initialText,textBoxFunction)
 if gui.current().wtype=="custom" then
  table.insert(gui.current().layout,{"textBox",text=initialText,x=xPos,y=yPos,sizeX=width,cursor=0,func=textBoxFunction})
 end
end

function gui.addLabel(xPos,yPos,labelText,labelColor)
 if gui.current().wtype=="custom" then
  table.insert(gui.current().layout,{"label",text=labelText,x=xPos,y=yPos,color=labelColor})
 end
end

function gui.addSlider(xPos,yPos,sliderColor,initialValue,sliderFunction)
 if gui.current().wtype=="custom" then
  table.insert(gui.current().layout,{"colorSlider",value=initialValue,x=xPos,y=yPos,color=sliderColor,func=sliderFunction})
 end
end

function gui.addList(xPos,yPos,width,height,listElements,listFunction)
 if gui.current().wtype=="custom" then
  table.insert(gui.current().layout,{"list",x=xPos,y=yPos,sizeX=width,sizeY=height,scroll=0,selected=1,elements=listElements,func=listFunction})
 end
end

function gui.closeWindow()
 table.remove(gui.windows)
 gui.defaultFocus()
 refresh()
end

function gui.nbWindows()
 return #gui.windows
end

function gui.defaultFocus()
 if gui.nbWindows()>0 then
  gui.focus=-#gui.current().buttons
  gui.moveFocus(1)
  gui.focus=gui.focus>0 and gui.focus or -1
 end
end


--------------------------------------------------------------------------------------------------------------
--------------------------------------------END OF USER FUNCTIONS---------------------------------------------
--------------------------------------------------------------------------------------------------------------



--GUI UTILS

function gui.refreshCurrent()
 local current=gui.current()
 if current.size then
  local sizeX,sizeY=unpack(current.size)
  local xPos,yPos=(width()-sizeX)/2,(height()-sizeY-15)/2
  refresh(xPos,yPos,sizeX,sizeY+39)
 else
  refresh()
 end
end

function gui.addWindow(windowType,windowName,windowButtons,windowLayout,windowSize)
 table.insert(gui.windows,{wtype=windowType,name=windowName,buttons=windowButtons,layout=windowLayout,size=windowSize})
 gui.focus=-1
 refresh()
end

function gui.current()
 return gui.windows[#gui.windows]
end



--GUI EVENTS
function gui.mouseDown(xPos,yPos)
 if gui.nbWindows()>=1 then
  local window=gui.current()
  if window.size then
   local sizeX,sizeY=unpack(window.size)
   local x,y=(width()-sizeX)/2,(height()-sizeY-15)/2
   if xPos>x and xPos<x+sizeX and yPos>y then
    gui.saveTextBox()
    if yPos<y+sizeY and gui.current().wtype=="custom" then
     gui.setFocus(xPos-x,yPos-y,window)
    elseif yPos>y+sizeY and yPos<y+sizeY+39 then
     gui.buttonDown(xPos,yPos,window.buttons)
    end
   end
  end
 end
end

function gui.paint(gc)
 for i,e in pairs(gui.windows) do
  gui[e.wtype].paint(gc,e,i)
 end
 gui.resized=false
end

function gui.resize()
 gui.resized=true
end

function gui.tabKey()
 if gui.nbWindows()>0 then
  gui.saveTextBox()
  gui.moveFocus(1)
  gui.refreshCurrent()
 end
end

function gui.backtabKey()
 if gui.nbWindows()>0 then
  gui.saveTextBox()
  gui.moveFocus(-1)
  gui.refreshCurrent()
 end
end

function gui.arrowKey(arrow)
 if gui.nbWindows()>0 then
  if gui.focus<0 then
   if arrow=="left" then
    gui.moveFocus(-1)
    gui.refreshCurrent()
   elseif arrow=="right" then
    gui.moveFocus(1)
    gui.refreshCurrent()
   end
  elseif gui.focus>0 then
   local currentElem=gui.current().layout[gui.focus]
   if gui[currentElem[1]].arrowKey then
    gui[currentElem[1]].arrowKey(arrow,currentElem)
    gui.refreshCurrent()
   end
  end
 end
end

function gui.enterKey()
 if gui.nbWindows()>0 then
  if gui.focus<0 then
   gui.current().buttons[-gui.focus][2]()
  elseif gui.current().wtype=="custom" then
   gui.OKButton()
  end
 end
end

function gui.charIn(char)
 if gui.nbWindows()>0 then
  if gui.focus>0 then
   local currentElem=gui.current().layout[gui.focus]
   if gui[currentElem[1]].charIn then
    gui[currentElem[1]].charIn(char,currentElem)
    gui.refreshCurrent()
   end
  end
 end
end

function gui.backspaceKey()
 if gui.nbWindows()>0 then
  if gui.focus>0 then
   local currentElem=gui.current().layout[gui.focus]
   if gui[currentElem[1]].backspaceKey then
    gui[currentElem[1]].backspaceKey(currentElem)
    gui.refreshCurrent()
   end
  end
 end
end

function gui.escapeKey()
 if gui.nbWindows()>0 then
  gui.closeWindow()
 end
end



--GUI LAYOUT ELEMENTS EVENTS

function gui.textBox.charIn(char,textBox)
 if string.len(char)==1 then
  textBox.prev={textBox.text,textBox.cursor}
  textBox.text=string.usub(textBox.text,1,textBox.cursor)..char..string.usub(textBox.text,textBox.cursor+1)
  textBox.cursor=textBox.cursor+1
 end
end

function gui.textBox.arrowKey(arrow,textBox)
 if arrow=="right" and textBox.cursor<string.len(textBox.text) then
  textBox.cursor=textBox.cursor+1
 elseif arrow=="left" and textBox.cursor>0 then
  textBox.cursor=textBox.cursor-1
 end
end

function gui.textBox.mouseDown(textBox,x)
 textBox.setCursor=x-2
end

function gui.textBox.backspaceKey(textBox)
 if string.len(textBox.text)>0 and textBox.cursor>0 then
  textBox.text=string.usub(textBox.text,1,textBox.cursor-1)..string.usub(textBox.text,textBox.cursor+1)
  textBox.cursor=textBox.cursor-1
 end
end

function gui.colorSlider.arrowKey(arrow,slider)
 if arrow=="right" then
  slider.value=slider.value<250 and slider.value+5 or 255
  gui.executeFunction(slider,slider.value)
 elseif arrow=="left" then
  slider.value=slider.value>5 and slider.value-5 or 0
  gui.executeFunction(slider,slider.value)
 end
end

function gui.colorSlider.mouseDown(slider,x)
 x=(x-2)*4
 x=x>0 and x or 0
 x=x<255 and x or 255
 slider.value=x
 gui.executeFunction(slider,slider.value)
end

function gui.list.arrowKey(arrow,list)
 if arrow=="up" and list.selected>1 then
  list.selected=list.selected-1
  gui.executeFunction(list,list.elements[list.selected])
 elseif arrow=="down" and list.selected<#list.elements then
  list.selected=list.selected+1
  gui.executeFunction(list,list.elements[list.selected])
 end
end

function gui.list.mouseDown(list,x,y)
 if #list.elements>0 then
  if x>list.sizeX-17 then
   if y>list.sizeY/2 and list.selected<#list.elements then
    list.selected=list.selected+1
    gui.executeFunction(list,list.elements[list.selected])
   elseif y<list.sizeY/2 and list.selected>1 then
    list.selected=list.selected-1
    gui.executeFunction(list,list.elements[list.selected])
   end
  elseif list.fontHeight  then
   list.selected=math.floor(y/list.fontHeight)+1+list.scroll
   list.selected=list.selected<#list.elements and list.selected or #list.elements
   gui.executeFunction(list,list.elements[list.selected])
  end
 end
end


--GUI MISC FUNCTIONS

function gui.executeFunction(element,arg)
 if element.func then
  element.func(arg)
 end
end

function gui.saveTextBox()
 local elem=gui.current().layout[gui.focus]
 if elem then
  if elem[1]=="textBox" then
   gui.executeFunction(elem,elem.text)
  end
 end
end

function gui.moveFocus(nb)
 local currentWindow=gui.current()
 local test=false
 local originalFocus=gui.focus
 nb=gui.focus<0 and -nb or nb
 gui.focus=gui.focus+nb
 if #currentWindow.buttons==0 then
  gui.focus=-1
  test=true
 end
 while not test do
  if gui.focus<0 then
   if -gui.focus<=#currentWindow.buttons then
    test=true
   else
    gui.focus=1
    nb=1
   end
  elseif gui.focus==0 then
   if originalFocus<0 then
    if currentWindow.wtype=="dialogBox" then
     gui.focus=-#currentWindow.buttons
     test=true
    elseif #currentWindow.layout==0 then
     gui.focus=-#currentWindow.buttons
     test=true
    else
     gui.focus=#currentWindow.layout
     nb=-1
    end
   else
    gui.focus=nb<0 and -#currentWindow.buttons or 1
   end
  else
   if currentWindow.wtype=="dialogBox" then
    test=true
    gui.focus=-1
   elseif currentWindow.wtype=="custom" then
    if gui.focus<=#currentWindow.layout then
     if currentWindow.layout[gui.focus][1]=="label" then
      gui.focus=gui.focus+(nb<0 and -1 or 1)
     else
      test=true
     end
    else
     test=true
     gui.focus=-1
    end
   end
  end
 end
end

function gui.buttonDown(x,y,buttons)
 for i,e in pairs(buttons) do
  if x>e.pos and x<e.pos+e.size then
   gui.focus=-i
   e[2]()
  end
 end
end

function gui.OKButton()
 local buttons=gui.current().buttons
 for i=1,#buttons do
  if buttons[i][1]=="OK" then
   gui.saveTextBox()
   buttons[i][2]()
  end
 end
end

function gui.setFocus(x,y,window)
 for i,e in pairs(window.layout) do
  if e[1]=="list" then
   if x>e.x and y>e.y and x<e.x+e.sizeX and y<e.y+e.sizeY then
    gui.focus=i
    gui.list.mouseDown(e,x-e.x,y-e.y)
    gui.refreshCurrent()
   end
  elseif e[1]=="textBox" then
   if x>e.x and y>e.y and x<e.x+e.sizeX and y<e.y+22 then
    gui.focus=i
    gui.textBox.mouseDown(e,x-e.x,y-e.y)
    gui.refreshCurrent()
   end
  elseif e[1]=="colorSlider" then
   if x>e.x and y>e.y and x<e.x+68 and y<e.y+20 then
    gui.focus=i
    gui.colorSlider.mouseDown(e,x-e.x,y-e.y)
    gui.refreshCurrent()
   end
  end
 end
end



--GUI DRAWING

function gui.dialogBox.paint(gc,dialogBox,windowID)
 local sizeX,sizeY
 if not dialogBox.size then
  gc:setFont("sansserif","r",10)
  sizeX=improvedStr.width(gc,dialogBox.layout)+24
  sizeY=improvedStr.height(gc,dialogBox.layout)+17
  gui.windows[windowID].size={sizeX,sizeY}
 else
  sizeX,sizeY=unpack(dialogBox.size)
 end
 gui.paintWindowBG(gc,dialogBox.name,sizeX,sizeY)
 gui.paintTextArea(gc,dialogBox.layout,sizeX,sizeY)
 gui.paintButtons(gc,dialogBox.buttons,sizeX,sizeY,windowID)
end

function gui.custom.paint(gc,window,windowID)
 gui.paintWindowBG(gc,window.name,window.size[1],window.size[2])
 gui.paintLayout(gc,window.layout,window.size[1],window.size[2])
 gui.paintButtons(gc,window.buttons,window.size[1],window.size[2],windowID)
end





function gui.paintLayout(gc,layout,sizeX,sizeY)
 local x,y=(width()-sizeX)/2,(height()-sizeY-15)/2
 for i,e in pairs(layout) do
  if e[1]=="textBox" then
   gui.paintTextBox(gc,e,x,y,gui.focus==i)
  elseif e[1]=="label" then
   gui.paintLabel(gc,e,x,y)
  elseif e[1]=="colorSlider" then
   gui.paintColorSlider(gc,e,x,y,gui.focus==i)
  elseif e[1]=="list" then
   gui.paintList(gc,e,x,y,gui.focus==i)
  end
 end
end

function gui.paintLabel(gc,label,x,y)
 gc:setFont("sansserif","r",10)
 if label.color then
  gc:setColorRGB(0,0,0)
  gc:fillRect(x+label.x,y+label.y,30,20)
  gc:setColorRGB(unpack(label.color))
  gc:fillRect(x+label.x+1,y+label.y+1,28,18)
 else
  gc:setColorRGB(0,0,0)
  gc:drawString(label.text,x+label.x,y+label.y,"top")
 end
end

function gui.paintTextBox(gc,textBox,x,y,selected)
 if gc:getStringWidth(textBox.text)>textBox.sizeX-5 then
  textBox.prev=textBox.prev or {"",0}
  textBox.text,textBox.cursor=unpack(textBox.prev)
 end
 if textBox.setCursor then
  textBox.cursor=string.len(textBox.text)
  for i=string.len(textBox.text),1,-1 do
   if gc:getStringWidth(string.sub(textBox.text,1,i))>textBox.setCursor then
    textBox.cursor=i-1
   end
  end
  textBox.setCursor=nil
 end
 if selected then
  gc:setColorRGB(50,150,190)
  gc:fillRect(x+textBox.x-2,y+textBox.y-2,textBox.sizeX+5,27)
 end
 gc:setColorRGB(255,255,255)
 gc:fillRect(x+textBox.x,y+textBox.y,textBox.sizeX,22)
 gc:setColorRGB(0,0,0)
 gc:drawRect(x+textBox.x,y+textBox.y,textBox.sizeX-1,22)
 gc:setFont("sansserif","r",10)
 gc:drawString(textBox.text,x+textBox.x+3,y+textBox.y+1,"top")
 if selected then
  gc:fillRect(gc:getStringWidth(string.usub(textBox.text,1,textBox.cursor))+x+textBox.x+3,y+textBox.y+2,1,19)
 end
end

function gui.paintColorSlider(gc,slider,x,y,selected)
 if selected then
  gc:setColorRGB(50,150,190)
  gc:fillRect(x+slider.x-2,y+slider.y-2,72,24)
 end
 gc:setColorRGB(0,0,0)
 gc:fillRect(x+slider.x,y+slider.y,68,20)
 for i=0,63 do
  gc:setColorRGB(slider.color=="red" and i*4 or newColor[1],slider.color=="green" and i*4 or newColor[2],slider.color=="blue" and i*4 or newColor[3])
  gc:fillRect(x+slider.x+i+2,y+2+slider.y,1,16)
 end
 if isCX() then
  gc:setColorRGB(255-slider.value,255-slider.value,255-slider.value)
 else
  gc:setColorRGB(255,255,255)
 end
 gc:fillRect(x+slider.x+slider.value/4+1,y+slider.y-2,3,24)
end

function gui.paintList(gc,list,x,y,selected)
 if selected then
  gc:setColorRGB(50,150,190)
  gc:fillRect(x+list.x-2,y+list.y-2,list.sizeX+4,list.sizeY+4)
 end
 gc:setColorRGB(0,0,0)
 gc:fillRect(list.x+x,list.y+y,list.sizeX,list.sizeY)
 gc:setColorRGB(255,255,255)
 gc:fillRect(list.x+1+x,list.y+1+y,list.sizeX-2,list.sizeY-2)
 gc:setColorRGB(100,100,100)
 gc:drawImage(gui.img.upButton,list.x+x+list.sizeX-14,y+list.y+3)
 gc:drawImage(gui.img.downButton,list.x+x+list.sizeX-14,y+list.y+list.sizeY-13)
 gc:drawRect(list.x+x+list.sizeX-14,y+list.y+15,10,list.sizeY-31)
 gc:setFont("sansserif","r",10)
 local fontHeight=list.fontHeight
 if not fontHeight then
  list.fontHeight=gc:getStringHeight("a")
  fontHeight=list.fontHeight
 end
 local capacity=math.floor(list.sizeY/fontHeight)
 if list.selected<list.scroll+1 then
  list.scroll=list.selected-1
 elseif list.selected>list.scroll+capacity then
  list.scroll=list.selected-capacity
 end
 if list.scroll>#list.elements-capacity then
  local scroll=#list.elements-capacity
  scroll=scroll<0 and 0 or scroll
  list.scroll=scroll
 end
 if #list.elements*fontHeight>list.sizeY then
  local scrollBarSize=(list.sizeY-31)*list.sizeY/(#list.elements*fontHeight)
  gc:fillRect(list.x+x+list.sizeX-14,y+list.y+15+list.scroll*(list.sizeY-31)/#list.elements,11,scrollBarSize)
 end
 gc:setColorRGB(0,0,0)
 local step=0
 for i=list.scroll+1,list.scroll+capacity do
  if list.elements[i] then
   if list.selected==i then
    gc:setColorRGB(unpack(selected and {50,150,190} or {200,200,200}))
    gc:fillRect(list.x+x+1,list.y+y+step*fontHeight+1,list.sizeX-16,fontHeight-2)
    gc:setColorRGB(0,0,0)
   end
   gc:drawString(list.elements[i],list.x+x+3,list.y+y+step*fontHeight,"top")
   step=step+1
  end
 end
end

function gui.paintButtons(gc,buttons,sizeX,sizeY,windowID)
 local x,y=(width()-sizeX)/2,(height()-sizeY-15)/2
 gc:setFont("sansserif","r",10)
 if (not buttons[1].size) or gui.resized then
  local totalSize,size,pos=-7,{},{}
  for i,e in pairs(buttons) do
   size[i]=gc:getStringWidth(e[1])+10
   totalSize=totalSize+size[i]+7
  end
  pos[1]=(width()-totalSize)/2
  for i=2,#buttons do
   pos[i]=pos[i-1]+size[i-1]+7
  end
  for i,e in pairs(buttons) do
   gui.windows[windowID].buttons[i].size=size[i]
   gui.windows[windowID].buttons[i].pos=pos[i]
  end
  buttons=gui.windows[windowID].buttons
 end
 for i,e in pairs(buttons) do
  gc:setColorRGB(136,136,136)
  gc:fillRect(e.pos,y+sizeY+9,e.size,23)
  gc:fillRect(e.pos+1,y+sizeY+8,e.size-2,25)
  gc:fillRect(e.pos+2,y+sizeY+7,e.size-4,27)
  gc:setColorRGB(255,255,255)
  gc:fillRect(e.pos+2,y+sizeY+9,e.size-4,23)
  gc:setColorRGB(0,0,0)
  gc:drawString(e[1],e.pos+5,y+sizeY+20,"middle")
 end
 if gui.focus<0 and windowID==gui.nbWindows() then
  local button=buttons[-gui.focus]
  if isCX() then
   gc:setColorRGB(50,150,190)
  else
   gc:setColorRGB(0,0,0)
  end
  gc:drawRect(button.pos-3,y+sizeY+4,button.size+5,32)
  gc:drawRect(button.pos-2,y+sizeY+5,button.size+3,30)
 end
end

function gui.paintTextArea(gc,text,sizeX,sizeY)
 local x,y=(width()-sizeX)/2,(height()-sizeY-15)/2
 if isCX() then
  gc:setColorRGB(128,128,128)
 else
  gc:setColorRGB(255,255,255)
 end
 gc:drawRect(x+6,y+6,sizeX-13,sizeY-13)
 gc:setColorRGB(0,0,0)
 gc:setFont("sansserif","r",10)
 improvedStr.draw(gc,text,x+12,y+9)
end

function gui.paintWindowBG(gc,name,sizeX,sizeY)
 local x,y=(width()-sizeX)/2,(height()-sizeY-15)/2
 if isCX() then
  gc:setColorRGB(100,100,100)
 else
  gc:setColorRGB(200,200,200)
 end
 gc:fillRect(x-1,y-23,sizeX+4,sizeY+65)
 gc:fillRect(x,y-22,sizeX+4,sizeY+65)
 gc:fillRect(x+1,y-21,sizeX+4,sizeY+65)
 if isCX() then
  gc:setColorRGB(128,128,128)
 else
  gc:setColorRGB(0,0,0)
 end
 gc:fillRect(x-2,y-24,sizeX+4,sizeY+65)
 if isCX() then
  for i=1,22 do
   gc:setColorRGB(32+i*3,32+i*3,32+i*3)
   gc:fillRect(x,y+i-23,sizeX,1)
  end
 else
  gc:setColorRGB(0,0,0)
  gc:fillRect(x,y-22,sizeX,22)
 end
 gc:setColorRGB(255,255,255)
 gc:setFont("sansserif","r",10)
 gc:drawString(name,x+4,y-9,"baseline")
 gc:setColorRGB(224,224,224)
 gc:fillRect(x,y,sizeX,sizeY+39)
 gc:setColorRGB(128,128,128)
 gc:fillRect(x+6,y+sizeY,sizeX-12,2)
end




--MULTIPLE LINE STRING GESTION
improvedStr={}

function improvedStr.draw(gc,str,x,y)
 str=tostring(str)
 local table1={improvedStr.cut(str)}
 for i,e in pairs(table1) do
  gc:drawString(e,x,y+(i-1)*gc:getStringHeight("a"),"top")
 end
end

function improvedStr.width(gc,str)
 str=tostring(str)
 local table1={improvedStr.cut(str)}
 local table2={}
 for i,e in pairs(table1) do
  table2[i]=gc:getStringWidth(e)
 end
 table.sort(table2)
 return table2[#table2]
end

function improvedStr.height(gc,str)
 str=tostring(str)
 local table1={improvedStr.cut(str)}
 return gc:getStringHeight("a")*#table1
end

function improvedStr.cut(str)
 local table1,finished={},false
 local posStart,posEnd,last=1,0,1
 while not finished do
  posStart,posEnd=string.find(str,"\n",posEnd+1)
  if posStart then
   table.insert(table1,string.sub(str,last,posStart-1))
   last=posEnd+1
  else
   table.insert(table1,string.sub(str,last))
   finished=true
  end
 end
 return unpack(table1)
end


----------------------------------------------------------------------------------------------------
------------------------------------- End of Nspaint GUI engine ------------------------------------
----------------------------------------------------------------------------------------------------
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Offline Adriweb

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Re: [Lua] Image Editor
« Reply #85 on: April 11, 2012, 12:54:25 pm »
Very, very nice looking gui.

I wonder how it compares to EEPro's one in term of extensibility/power.
I know jim's way was amazing :P
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TI-Nspire Lua programming : Tutorials  |  API Documentation

Offline cyanophycean314

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Re: [Lua] Image Editor
« Reply #86 on: April 12, 2012, 04:01:36 am »
The long awaited update is here! The screenies look very pretty.  :D
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Offline Yeong

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Re: [Lua] Image Editor
« Reply #87 on: April 12, 2012, 04:48:27 am »
Wow this now looks epic! :o
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Offline Jim Bauwens

  • Lua! Nspire! Linux!
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Re: [Lua] Image Editor
« Reply #88 on: April 12, 2012, 08:07:58 pm »
Very nice work :)

I'm also working on a similar library for EEPro.
But my structure is a bit different than yours, it's closer to an actual graphical toolkit like gtk.
Your's will be much more lighter though, so that's also very good.
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Offline Chockosta

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Re: [Lua] Image Editor
« Reply #89 on: April 12, 2012, 09:15:57 pm »
Yes, my "library" is just a tool to make window display and events easier, not a graphical toolkit.
It is obviously way more basic than a real GUI engine.
By the way, is there a way to have a look at your library's code ?
EDIT : Oh, I just saw the link in your signature, sorry :)
« Last Edit: April 12, 2012, 09:20:12 pm by Chockosta »
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