Re: [PROPOSAL] Package 'ImageText'

On 10 Oct 2003 at 14:49, Tobias Schlitt wrote: > <zitiere wer="Pierre-Alain Joye"> > > >> <zitiere wer="Pierre-Alain Joye"> > > >> > Text itself should have a lot of things you do not have in your > >> > class. I think about: - borders (rounded corners, line > >> > corners,...) - antialiasing on/off (negative colors) - > >> > vertical/horizontal/custom angle - Shadow - patterns/tiles filled > > >> I think all of that would be part of the GD2 package. Borders, etc. > >> are not part of text manipulation. When the GD2 package will be > >> developed, it should contain a baseclass for GD2 objects, where > >> borders, antialiasing, and so an can be defined. ImageText will > >> then inherit that. > > > Antialiasing is a text property you should allow the user to set it > > on/off in the text class, that has nothing to do with the AA lines > > or polygons. > > I think the implementation of antialiasing is not so hard... > > > A text/paragraph uses to have border property, having it in > > Image_Text sounds good to me. > > Even no prob, IMHO. > > > I'm wondering how you will manage shadows for text using a generic > > function, except the mask creation, everything requires the gd text > > functions. > > IMHO doing a shadow can be done by outputting the text a second time > in a light gray (or another shadow color) and some pixels moved from > the original position, before the original text is rendered. Hmm - you should consider using certain alpha-values for the shadows. GD2 has support for this. > > What's about the vertical/horizontal/custom options? :) > > You mean rotation? I think a real rotation is not implementable. If > the user decides to turn the text around 23 degrees the width and > heights are no more managable. But IMHO turns by 90 degrees (90, 180, > 270) are implementable. There are two things on my mind: a) First I'd like to propose writing text from left-to-right or easily from top-to-down (which should be doable). b) You can draw text onto a new GD2-canvas, and rotate it by an arbitrary angle using: http://de3.php.net/manual/en/function.imagerotate.php afaik. And using a transparent background for the newly created gd2- canvas it might be doable to paste that text over the original image, right? Haven't tried, but should work. > >> Tha class itself until now was a little hack for myself. I think, I > >> missed some things, while making it CS compliant! ;) > > > Nice hack btw :) > > Thx! ;) > > >> > If you drop the idea of a GD2 package, it will be nice to accept > >> > 2 kind of arguments for the image destination: > > >> > - A gd2 ressource > >> > Then options should contain the clip positions and size > >> > - A surface definition > >> > width and height > > >> Sorry, I didn't get that. Can you explain that again? You mean the > >> toImage() method or what? > > > $imgressources = imagecreatefrompng('foobar.png'); > > ... > > $options = array('surface' = $imgressource); > > or > > $options = array('surface' = array(200,200)); > > That's a quite nice approach. My idea until now was to enable the user > to drop his text into an image by the class. Your approach would > implement rendering a whole image only with text, which is a nice > feature. > > >> > Then the class should return either a new image (gd2 ressource) > >> > or output the result to a file, to stdout (options contain the > >> > imageformat), or both file and stdout. > > > stdout: > > $imgtext->out('png'); > > > file: > > $imgtext->save('foo.png'); > > > > file & stdout (usefull to cache and stdout at the same time): > > $imgtext->save('png',true); Hmm - is saving and outputting at the same time used often? Pierre, you mean for caching an image? Why wouldn't you just write it into a variable and save / output it? Because files might get too large? > >> I know that the class is far away from being ready-to-use. I only > >> wanted to propose it to PEAR to know, if it's worth working it out > >> more. I didn't want to release a package yet, just to get some > >> comments and ideas on it and maybe reserve the package name and put > >> some sources into CVS. > > > The name should be Image_Text imho. > > Right. Hmm - maybe, well okay. I hoped that Tobias might come up with a gd- util-class ... If he plans to integrate it into a gd-utility-class later then maybe we shouldn't consider a Image_Text-release? Stefan