+- GetSimple Support Forum (http://get-simple.info/forums)
+-- Forum: GetSimple (http://get-simple.info/forums/forumdisplay.php?fid=3)
+--- Forum: General Questions and Problems (http://get-simple.info/forums/forumdisplay.php?fid=16)
+--- Thread: QUESTION Upload png image (/showthread.php?tid=9607)
Upload png image - smdp-1971 - 2017-05-02
When upload image is it possible to get a transparent background PNG image. Now it looks like this (black background)?
Tnx
[img]
![[Image: screen-1.png]](https://s27.postimg.org/qb1zwytz7/screen-1.png)
jpg imagescertificity.com[/img]
RE: Upload png image - shawn_a - 2017-05-02
It is transparent, that's just the background. Use css to turn it off with the admincss plugin
.jcrop-holder{
background-color: #000;
}
oh nm that was fixed in 3.4, still a bug in 3.3x, when saving the thumbnail loses transparency, which is a separate issue.
The image script had to be modified to preserve transparency. Ill see if it can be patched in or not.
RE: Upload png image - shawn_a - 2017-05-02
replace and add these functions to admin/inc/imagemanipulation.php
PHP Code:
/**
* Private method to run the imagecopyresampled() function with the parameters that have been set up.
* This method is used by the save() and show() methods.
*/
private function createResampledImage()
{
/* change ImageCreateTrueColor to ImageCreate if your GD not supported ImageCreateTrueColor function*/
if ( isset($this->image["sizex_thumb"]) && isset($this->image["sizey_thumb"]) ) {
$this->image["des"] = ImageCreateTrueColor($this->image["sizex_thumb"], $this->image["sizey_thumb"]);
$this->preserveAlpha();
imagecopyresampled($this->image["des"], $this->image["src"], 0, 0, $this->image["targetx"], $this->image["targety"], $this->image["sizex_thumb"], $this->image["sizey_thumb"], $this->image["sizex"], $this->image["sizey"]);
} else {
$this->image["des"] = ImageCreateTrueColor($this->image["sizex"], $this->image["sizey"]);
$this->preserveAlpha();
imagecopyresampled($this->image["des"], $this->image["src"], 0, 0, $this->image["targetx"], $this->image["targety"], $this->image["sizex"], $this->image["sizey"], $this->image["sizex"], $this->image["sizey"]);
}
}
/**
* preserve alpha channel
* @return boolean true:enable transparency alpha blending
*/
private function preserveAlpha($bool=true){
imagealphablending($this->image["des"], !$bool);
imagesavealpha($this->image["des"], $bool);
}
the preserveAlpha calls being the fix