[TYPO3-dev] 4.0beta3 GMENU transparency bug?!?

[Bernhard Kraft]

Martin Kutschker wrote:

> Bernhard Kraft schrieb:
> 
>>
>> I found the solution. But just read my posting here:
>> http://bugs.typo3.org/view.php?id=2692
> 
> 
> As I read it, it's a workaround: use the darkest colour as transparent
> colour. Which means I cannot have a transparent GIF/PNG with black in it
> (by definition the darkest colour).
> 

No. It's no workaround. It's simple - here is some pseudo code:

$im = create_image()
$BackColor = magic_method($im);

foreach ($gifBuilderObj) {
  switch ($whatever) {
    case 'A':
       do_something($im);
    break;
    case 'B':
       write_and_load_the_image($im);	// Here $im get's modified in such a way that the value of
// $BackColor (a color index) doesn't stay the same
    break;
  }
}

make_transparent($im, $BackColor)


So during "B" $im is modified so that $BackColor will not be the one I want transparent.

> Or is "only" the specific setup mentioned in the bug affected? But
> what's the key in it? The IM version, the GD version? I cannot beleive
> that PHP or Apache affect the result.

The last paragraph in the bug-report means that only if those 3 conditions (Setup-conditions - not available
software conditions) are met the error will occur. It guess it's the GD and/or IM version which make this bug happen.


greets,
Bernhard
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