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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