thanks, but I was asking for the source image(s) and the resulting
image (use gimp or whatever to show what you would like to achieve),
easier to actually see what you want to do :)
About transparency, see imagealphablending and imagesavealpha
On Fri, Sep 6, 2013 at 9:39 AM, Jacob Kruger <jacob@xxxxxxxxxxxxx> wrote:
> Ok, here's the test code - the drawBox() function is the current
> application/implementation am now trying out:
>
> <?php
> function drawBox($img, $arCoords, $iColour, $iThickness=2) {
> imagesetthickness($img, $iThickness);
> $xLeft = intval($arCoords[0]);
> $yTop = intval($arCoords[1]);
> $xRight = intval($arCoords[2]);
> $yBottom = intval($arCoords[3]);
> imageline($img, $xLeft, $yTop, $xRight, $yTop, $iColour);
> imageline($img, $xLeft, $yTop, $xLeft, $yBottom, $iColour);
> imageline($img, $xRight, $yTop, $xRight, $yBottom, $iColour);
> imageline($img, $xLeft, $yBottom, $xRight, $yBottom, $iColour);
> return $img;
> }//end of drawBox function
>
> $imgOut = imagecreatefrompng("./images/test.png");
> $colourYellow = imagecolorallocate($imgOut, 255, 255, 0);
> $arBoxCoords = array(50, 50, 150, 150);
> $imgOut = drawBox($imgOut, $arBoxCoords, $colourYellow, 2);
> header("Content-Disposition: inline; filename=\"test.png\"");
> header("Content-Type: image/png");
> imagepng($imgOut);
> imagedestroy($imgOut);
> exit;
> ?>
>
>
> Jacob Kruger
> Blind Biker
> Skype: BlindZA
> '...fate had broken his body, but not his spirit...'
>
> ----- Original Message ----- From: "Jacob Kruger" <jacob@xxxxxxxxxxxxx>
> To: <php-windows@xxxxxxxxxxxxx>
> Cc: "Pierre Joye" <pierre.php@xxxxxxxxx>
> Sent: Friday, September 06, 2013 8:39 AM
>
> Subject: Re: GD imagerectangle() function - background
> transparency?
>
>
>> Effectively, I've got sort of template images, and want to sort of draw
>> multiple outline boxes onto them where users can then choose one to then
>> insert text onto image - almost like a form of eCard template rendition,
>> but, bit different.
>>
>> I was originally trying to show the boxes/areas to the user using
>> relatively positioned template images, overlaid by absolutely positioned
>> div elements, with coloured borders, handled using CSS, and then jQuery to
>> manipulate the highlighted/chosen one by changing it's border-color CSS
>> attribute, client-side/at runtime, but, this doesn't always seem to
>> cooperate/implement it at run time.
>>
>> Have now told them will try sort of dynamically generating a version of
>> the template image, server-side, with the various area outlines drawn onto
>> it, which can then reload at run-time when a new text outline area is
>> selected, but initially tried creating an image resource from the template
>> file, and then using imagerectangle to draw a rectangle onto it, after
>> allocating the relevant colour, and setting drawing thickness, but, it
>> seemed to be blanking out the template image, so I then tried creating a
>> new image resource of the same dimensions, filling it up with an obscure
>> colour, draw the rectangle onto it, set it's transparency to the obscure
>> colour, and then use either imagecopy() or imagecopymerge() to copy it
>> over the original template image, but, still seems to be just blocking out
>> the actual template image.
>>
>> Now, suppose will maybe also try out splitting the blocks to be drawn up
>> into actual lines, and just try drawing the lines onto the original
>> template image, and see if that works, since at the moment, apparently the
>> combination output image is just a white background, with the coloured
>> boxes on it - as in, it's again just blocked out the original image, as
>> opposed to actually overlaying a somewhat transparent image onto it, and
>> suppose this could be due to pallett's not matching, or something..?
>>
>> Anyway, let me quickly slap together a couple of tests, and will try post
>> a link, and source code, etc.
>>
>> Thanks
>>
>> Jacob Kruger
>> Blind Biker
>> Skype: BlindZA
>> '...fate had broken his body, but not his spirit...'
>>
>> ----- Original Message ----- From: "Pierre Joye" <pierre.php@xxxxxxxxx>
>> To: "Jacob Kruger" <jacob@xxxxxxxxxxxxx>
>> Cc: "php-windows" <php-windows@xxxxxxxxxxxxx>
>> Sent: Friday, September 06, 2013 7:59 AM
>> Subject: Re: GD imagerectangle() function - background
>> transparency?
>>
>>
>> hi!
>>
>> On Thu, Sep 5, 2013 at 10:35 PM, Jacob Kruger <jacob@xxxxxxxxxxxxx> wrote:
>>>
>>> Just wondering, if I load an existing image into an image resource, and
>>> then draw a rectangle on it using the GD imagerectangle() function, and
>>> specifically not using the imagefilledrectangle() function, does the new
>>> rectangle/box overlay the existing image content, or just draw the
>>> outlines thereof onto/overlaying the existing content?
>>>
>>> Alternatively, should I load the existing image, then use something like
>>> imagecreatetruecolor() to create another image resource of the same
>>> dimensions, fill it with an obscure colour, draw the rectangle on it, set
>>> the transparency colour for that specific image resource to the obscure
>>> colour, and then copy it over the original/existing image resource before
>>> outputting/returning the combination?
>>
>>
>> imagecopy supports alpha, imageoverlay lets you define the mode. But
>> I'm not sure what kind of results you try to achieve, please put a
>> link to an example result image with the two source images, it could
>> help :)
>>
>> --
>> Pierre
>>
>> @pierrejoye | http://www.libgd.org
>>
>>
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>> PHP Windows Mailing List (http://www.php.net/)
>> To unsubscribe, visit: http://www.php.net/unsub.php
>>
>>
>
>
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--
Pierre
@pierrejoye | http://blog.thepimp.net | http://www.libgd.org
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