First argument of openPng is an error. If you don't have an error, it will
be undefined.
PS: I think "node-gd" library is a great example of why npm should have
namespaces :P
On Thursday, February 13, 2014 12:59:58 PM UTC+4, Michel Morelli wrote:
>
> Hi all, I’m creating a little node.js app (for test) that get image from a
> FORM, save it in a directory and create a thumbnail version.
> Form and upload works with no problem, but I can not create the
> thumbnail.
> This is my code:
>
> app.post('/upload', function (req, res) {
> var tempPath = req.files.file.path,
> name = '',
> targetPath = '';
>
> fileExist = true;
> fileNumber = 0;
>
> var fileType = path.extname(req.files.file.name);
> var fileName = path.basename(req.files.file.name,fileType);
>
> while (fileExist) {
>
> fileNumber_str = fileNumber.toString();
>
> var current = fileName + "_" +fileNumber_str + fileType;
> console.log("Controllo per "+current);
>
> if (fs.existsSync(__dirname + "/images/orig/" + current)) {
> console.log("--> Esiste");
> fileNumber++;
> } else {
> var newPath = __dirname + "/images/orig/" + current;
> console.log("nuovo nome : "+newPath);
> fs.rename(tempPath, newPath, function(err) {
> if (err) throw err;
> //Ora creo il thumb
> var newPathT = __dirname + "/images/thumb/" + current;
> gd.openPng([newPath],function(png,path){
> if(png) {
> var w = Math.floor(png.width/2), h =
> Math.floor(png.height/2);
> var target_png = gd.createTrueColor(w, h);
>
>
> png.copyResampled(target_png,0,0,0,0,w,h,png.width,png.height);
> target_png.savePng(newPathT, 1, gd.noop);
> }
> else {
> console.log("no png");
> console.log(png);
> console.log(path);
> }
> });
> console.log("Upload completed!");
> });
>
>
> break;
> }
> }
>
> res.redirect("/");
> res.end();
> });
>
>
> The function gd.open(…) set always “png” variables to “undefined”. I
> don’t understand where is my error.
>
> Thanks in advance and sorry for my bad english.
>
> M.
>
> --
> Michel 'ZioBudda' Morelli
> [email protected]<javascript:>
> Sviluppo applicazioni CMS DRUPAL e web dinamiche (LAMP+Ajax)
> Telefono: 0200619074
> Mobile: +39-3939890025 -- Fax: +39-0291390660
>
> http://www.ziobudda.net Skype: zio_budda
> http://www.ziobuddalabs.it Twitter: ziobudda
>
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