Srcsets / Variants: How to get the ...

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Replies: 6 - Pages: 1 - Last Post: 29 Jul 21, 20:50 Last Post By: AndreWolff

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AndreWolff

Posts: 1,158
Registered: 14-Dec-2007

Srcsets / Variants: How to get the dimensions of the largest image?
Posted: 29 Jul 21, 12:26

To implement srcsets in the new version of the PhotoSwipe skin, I need to know the dimensions of the largest image in the set.

I use now this:

 data-pswp-width="${imageWidth}" data-pswp-height="${imageHeight}"

but that are not the dimensions of the largest image in the set, unless the largest scale is 1.

Is there a simple method to get the dimensions of the largest image in the set?

I have another problem for the implementation:

The current implementation of the srcsets generates a srcset string with the largest image first and with the smallest image last.
For the PhotSwipe implementation, The smallest image should be first and the larges image last.
Is there a simple metod to get the current sequence reversed?

BTW: How can I enlarge the size of the image dimension printed in the middle of the image if I use FINEST as logging level? The text is for some sizes unreadable for my eyes has you can see in this test album.

Edited by: AndreWolff on 29 Jul 2021, 12:38

Edited by: AndreWolff on 29 Jul 2021, 12:48

RobM

Posts: 3,834
Registered: 4-Aug-2006

Re: Srcsets / Variants: How to get the dimensions of the largest image?
Posted: 29 Jul 21, 15:45

in response to: AndreWolff

Getting the largest variant was discussed in the 24 beta thread, which you participated in. The answer, however, is currentObject.getRenderer().getCloseupRenditions().get(0).getWidth();

For your second question, read the renditions list and create your own list in reverse order.

Third question, have you tried using the text image filter?

AndreWolff

Posts: 1,158
Registered: 14-Dec-2007

Re: Srcsets / Variants: How to get the dimensions of the largest image?
Posted: 29 Jul 21, 16:40

in response to: RobM

RobM wrote:
Getting the largest variant was discussed in the 24 beta thread, which you participated in. The answer, however, is currentObject.getRenderer().getCloseupRenditions().get(0).getWidth();

For your second question, read the renditions list and create your own list in reverse order.

Sorry Rob, I am not a JAVA programmer, so I do not understand that.
I need ready to copy code!

Third question, have you tried using the text image filter?

No I just use Davids Logging level FINEST recipe.

RobM

Posts: 3,834
Registered: 4-Aug-2006

Re: Srcsets / Variants: How to get the dimensions of the largest image?
Posted: 29 Jul 21, 18:11

in response to: AndreWolff

I use

//Get the biggest file from the srcSet
String biggest = "slides/" + currentObject.getRenderer().getCloseupRenditions().get(0).getEncodedName();

Then I just use

${biggest}

where I need to.

AndreWolff

Posts: 1,158
Registered: 14-Dec-2007

Re: Srcsets / Variants: How to get the dimensions of the largest image?
Posted: 29 Jul 21, 18:19

in response to: RobM

We I use now:

<ja:if exists="imageSrcset">
<% 
useSrcSet=true; 
largestWidth = currentObject.getRenderer().getCloseupRenditions().get(0).getWidth();
largestHeight = currentObject.getRenderer().getCloseupRenditions().get(0).getHeight();
System.out.println("largestWidth: " + largestWidth + " largestHeight: " + largestHeight); 
%>
data-pswp-srcset="${imageSrcset}" </ja:if>

I think this was your original proposal!

RobM

Posts: 3,834
Registered: 4-Aug-2006

Re: Srcsets / Variants: How to get the dimensions of the largest image?
Posted: 29 Jul 21, 18:54

in response to: AndreWolff

To get them in reverse order, except natural size will always be first, so you need to adjust for that.

int size = currentObject.getRenderer().getCloseupRenditions().size();
System.out.println("size " + size);
for (int i = size-1; i >= 0; i--) {
	System.out.println(currentObject.getRenderer().getCloseupRenditions().get(i).getEncodedName()) ;
}

AndreWolff

Posts: 1,158
Registered: 14-Dec-2007

Re: Srcsets / Variants: How to get the dimensions of the largest image?
Posted: 29 Jul 21, 20:50

in response to: RobM

Rob, thanks for your code.
It appears that the order is not important,

The way srcsets are implemented in the new Photoswipe gallery is unique I think:
You see the images changing if you do a pinch zoom, see this test album.

I did not see this in any jAlbum skin supporting srcsets!

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