TOPIC:

[FIXED] PNG Black background Fix 16 Nov 2012 09:28 #5408

blue-canoe
Topic Author
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Senior Member
Posts: 57
Thank you received: 16

Hello,

I had a problem with black backgrounds appearing on png images. After looking into the images.php class, I found a solution which worked for me.

I added these two lines at line 385:

imagesavealpha($resampled, true);
imagealphablending($resampled, false);

(after the line: $resampled = imagecreatetruecolor($w, $h)

There might be a better solution, but this works for me.

Kind regards,

Misha

The following user(s) said Thank You: JoomGuy

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Re: PNG Black background Fix 16 Nov 2012 09:31 #5409

JoomGuy Offline Moderator Joomla Enthusiast, Lover of Cooking Posts: 1115 Thank you received: 195	Thanks for sharing your solution Micha (@blue-canoe)! I think you are right with your solution as from memory, no specific provisions had been made for alpha transparency. These were images that contained transparency, right? Thanks again, Gez Need help with your Cook/Joomla Project? . PM me to find out what I can help with. NO time wasters please!!!
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Re: PNG Black background Fix 17 Nov 2012 10:19 #5433

blue-canoe Topic Author Offline Senior Member Posts: 57 Thank you received: 16	Yes, those were transparent images (png). There where some provisions made for alpha transparency, but only when the image is first created. Later on a new instances was created (to create the border etc if necessary) and there it was not done. The following user(s) said Thank You: JoomGuy
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Re: PNG Black background Fix 17 Nov 2012 11:17 #5434

JoomGuy Offline Moderator Joomla Enthusiast, Lover of Cooking Posts: 1115 Thank you received: 195	Hi Misha, Karma +1 For sharing your fix! Thanks again, Gez Need help with your Cook/Joomla Project? . PM me to find out what I can help with. NO time wasters please!!!
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Re: PNG Black background Fix 21 Nov 2012 12:39 #5558

admin Offline Administrator Chef Posts: 3711 Thank you received: 986	There might be a better solution, but this works for me. Why are you saying this ? It looks great ! Karma +1 It is a very nice fix because I recognize to had many problems with png. In com_media as well (The one I partially inspirated) Coding is now a piece of cake
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Re: PNG Black background Fix 28 Nov 2012 13:25 #5674

admin Offline Administrator Chef Posts: 3711 Thank you received: 986	FIXED with your tip. Coding is now a piece of cake
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[FIXED] PNG Black background Fix

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I jumped and started to work on a demo component... but 2 days later this demo component became the real component. I just showed today the end result to my customer and he turned to me and said... "this is more than I expected"... All of this is because Cook did cut about 70% of my work and provided me more ways to improve the usability of the component. The end result was 17 tables all related between than to generate a full dashboard for the travel agents. Thanks for Cook developers for such great tool. This component would not be possible to be done at short time with all the features in it
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