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word warp function

 
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DaSpamer
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PostPosted: Sun Jun 23, 2019 4:32 am    Post subject: word warp function Reply with quote

Some small function I wrote for word-wrapping text, useful when working with re-sizable forms.
Code:
function word_wrap(pharse,callback)
   if(not(type(pharse)=='string'and type(callback)=='function'))then return;end;
   local wordsTable,ti,tc = {},table.insert,table.concat;
   for line in pharse:gmatch('([^%.\n]+%.?)') do -- break on dot/newline
      local tmpLine = {};
      for word in line:gmatch('([^%s]+)') do -- divide + capture space
         -- we don't really care for the word position only length!-->{word,unpack(words)}
         if (#tmpLine == 0 or callback(tc({word,unpack(tmpLine)},' '))) then -- connect with space, also important!
            ti(tmpLine,word)
         else
            ti(wordsTable,tc(tmpLine,' '));tmpLine = {word};
         end
      end
      if(#tmpLine>0)then ti(wordsTable,tc(tmpLine,' '));end; -- insert last line
   end
   return tc(wordsTable,'\n');
end


Usage example:
Code:
local text = "I am writing something.\nYes, I plan to make it the most boring thing ever written.\nI go to the store.\nA car is parked.\nMany cars are parked or moving.\nSome are blue.\nSome are tan.\nThey have windows.\nIn the store, there are items for sale.\nThese include such things as soap, detergent, magazines, and lettuce.\nYou can enhance your life with these products.\nSoap can be used for bathing, be it in a bathtub or in a shower.\nApply the soap to your body and rinse.\nDetergent is used to wash clothes.\nPlace your dirty";

f = createForm();
f.borderStyle = 'bsSizeable';
f.width,f.height = 200,300;
l = createLabel(f);
l.font.size = 15;
f.onResize = function(sender)
   l.caption = word_wrap(text,function(line)
      -- limit by number of characters per line; (including space);
      -- return(#line < 100);end;
      -- limit by actual line width on object.
      if (l.canvas.getTextWidth(line) < f.width)then
         return true;
      end
      return false;
   end);
end;
f.onResize(f);

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http://forum.cheatengine.org/viewtopic.php?t=564919


Last edited by DaSpamer on Sun Jun 23, 2019 11:40 am; edited 1 time in total
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Corroder
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PostPosted: Sun Jun 23, 2019 5:50 am    Post subject: Reply with quote

From your example:

this line

Code:
l.caption = word_warp(text,function(line)


Not identifying by Lua, this gives error:

Code:
Error:[string "function word_warp(pharse,callback)
..."]:27: attempt to call a nil value (global 'word_wrap')

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DaSpamer
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PostPosted: Sun Jun 23, 2019 11:41 am    Post subject: Reply with quote

Corroder wrote:
From your example:

this line

Code:
l.caption = word_warp(text,function(line)


Not identifying by Lua, this gives error:

Code:
Error:[string "function word_warp(pharse,callback)
..."]:27: attempt to call a nil value (global 'word_wrap')

Typo in function name;
Re try now, should work just fine.

Also a note:
While I'm aware that this method exists with labels(which seems does not work when using lua) and memos.
I do not re call such function is available when drawning using (canvas),
which we can do it like this:
Code:
function word_wrap(pharse,callback)
   if(not(type(pharse)=='string'and type(callback)=='function'))then return;end;
   local wordsTable,ti,tc = {},table.insert,table.concat;
   for line in pharse:gmatch('([^%.\n]+%.?)') do -- break on dot/newline; remove %. to break only by new lines;
      local tmpLine = {};
      for word in line:gmatch('([^%s]+)') do -- split by space
         -- we don't really care for the word position only length!-->{word,unpack(words)}
         if (#tmpLine == 0 or callback(tc({word,unpack(tmpLine)},' '))) then -- connect with space, also important!
            ti(tmpLine,word);
         else
            ti(wordsTable,tc(tmpLine,' '));tmpLine = {word};
         end
      end
      if(#tmpLine>0)then ti(wordsTable,tc(tmpLine,' '));end; -- insert last line
   end
   local i = 0;
   return function () -- returns intraitor so we could use in for do loop..;
      i = i+1;
      return wordsTable[i];
   end
end

f = createForm();
f.borderStyle = 'bsSizeable'
i = createImage(f);
i.align = 'alClient';
i.canvas.brush.color = 0;
i.canvas.font.color = 0xFFFFFF;
i.canvas.font.size = 16;
local text = "I am writing something.\nYes, I plan to make it the most boring thing ever written.\nI go to the store.\nA car is parked.\nMany cars are parked or moving.\nSome are blue.\nSome are tan.\nThey have windows.\nIn the store, there are items for sale.\nThese include such things as soap, detergent, magazines, and lettuce.\nYou can enhance your life with these products.\nSoap can be used for bathing, be it in a bathtub or in a shower.\nApply the soap to your body and rinse.\nDetergent is used to wash clothes.\nPlace your dirty";
i.onResize = function(sender)
   local bmp = sender.picture.bitmap;bmp.canvas.clear();
   bmp.width,bmp.height = sender.width,sender.height; -- resize bitmap so we could draw if size was increased;
   local x,y = 5,5;
   local width =(sender.width-x*2);
   for line in word_wrap(text,function(line)if (sender.canvas.getTextWidth(line) < width)then
                  return true;end;return false;end) do
      sender.Canvas.textOut(x,y,line)
      y = y + sender.canvas.getTextHeight(line); -- get line height and append to y;
   end
end;
i.onResize(i);

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http://forum.cheatengine.org/viewtopic.php?t=564919
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Corroder
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PostPosted: Sun Jun 23, 2019 11:23 pm    Post subject: Reply with quote

Nice work, bravo
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johnrude
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PostPosted: Tue Jun 25, 2019 10:48 pm    Post subject: word warp function Reply with quote

Thats thoughtful

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