i've tried to ouput this in a chunk :
[[pthumb? &input=`[[+image]]` &options=`w=320` &toPlaceholder=`thumb`]]
[[+thumb.height]]`
It displays only once if I refresh the page, it does not appear anymore.
Question is there a solid way to display the height of a resized image (with pthumb, phpthumbup or phpthumbof?
Your call pthumb is cached, so it properly display only once, if you need to get height placeholder all time - so call snippet not cached (with !) -
[[!pthumb? &input=`[[+image]]` &options=`w=320` &toPlaceholder=`thumb`]]
[[+thumb.height]]`
Related
I'm having a bit of a problem: I'm trying to access the width of a container in which I've added a sprite to, but it seems to return as 1. However, when I inspect the object in the console, it gives me the proper width.
I wrote up a code pen showing the issue, but it goes something like this:
var container = new PIXI.Container();
app.stage.addChild(container);
var sprite = PIXI.Sprite.fromImage('https://i2.wp.com/techshard.com/wp-
content/uploads/2017/05/pay-1036469_1920.jpg?ssl=1&w=200');
container.addChild(sprite);
console.log(container.height);
console.log(container);
The first console log returns 1, while if I go into the object in the second log it gives me 141.
I'm trying to center the container like in the demo. The demo container returns the proper width, unless you try and do it for only one "bunny" (replacing bunny texture with internet image, also the for loop is commented out).
Any suggestions on a proper approach for this?
Cheers
There's a few things to address here.
Firstly, what the problem in your codepen is:
You're creating a texture from an image that has yet to be loaded.
Until the image loads pixi will not be able to give you the dimensions of it, and the container reports a width and height of 1 when you immediately query them. If you put the same console.log statement in a timeout then it will report the dimensions after the image has loaded and thus the dimensions will be accurate.
Logging out the object itself seems to work because when you examine the contents of it they've been updated to the correct values because the image has loaded by that point.
If the texture is already in the cache at the point that you create a new sprite using it then you won't have to wait before you can access its true dimensions.
Secondly, why the bunny example on pixi's site doesn't have the same problem:
Actually, it does. You just don't notice it.
The magic is in the bunny.anchor.set(0.5);. It lines 25 sprites with width and height of 1 out in a grid. By spacing them out, their container now has width and height of 160.
This container is now centered immediately based on its current dimensions, and then when the sprite textures finish loading and the sprites are updated with their new dimensions. Due to their anchor being set to 0.5, however, this means they remain centered despite their container now being larger.
You can play around with using a larger image than the bunny to exaggerate things and changing the anchor value, along with using the rerun code button rather than just refreshing the page. If you rerun the code the image being used for the texture remains cached by pixi so you get different results.
Lastly, how you would resolve this issue:
Loading your assets before creating sprites with them.
(Or at least waiting before they're loaded before querying their dimensions to position things)
You can find an example of the resource loader that pixi has here: http://pixijs.io/examples/?v=next-interaction#/basics/spritesheet.js
I have been trying to implement a feed App like Instagram or Facebook. ImageViews have match_parent width (screen width) and wrap_content height.
The code I have used...
Glide.with(context)
.load(imageURL)
.thumbnail(0.1f)
.diskCacheStrategy(DiskCacheStrategy.ALL)
.into(imageView)
;
That results into loading thumbnail first. The thumbnail is very small in size. I was expected that the thumbnail will display a faded image with the original image height.
Without thumbnail, the ImageViews do not populate any image (when loading) and then suddenly the original images comes into picture. I cannot use any place holder image as the height of the place holder image may not match the actual image to be loaded, makes it a bad user experience.
I have also tried...
Glide.with(context)
.load(imageURL)
.diskCacheStrategy(DiskCacheStrategy.ALL)
.placeholder(null)
.into(imageView)
;
But it is not working! I was wondering how the Instagram App does those fade in loading with images (with original image height)?
I have looked into various websites including the Glide Github issues and stack overflow, but unable to find any solution! I have already wasted about 6 hours of my day. What is the way out of this problem?
Use override attribute:
Glide.with(context)
.load(imageURL)
.override(18,18)
.thumbnail(0.1f)
.diskCacheStrategy(DiskCacheStrategy.ALL)
.into(imageView);
Also as Instagram is owned by Facebook it might be the case that they use Fresco library (not sure though).
I'm using fabricjs 1.7.17 and have seen this issue below on IE Edge, Chrome and Firefox.
where the canvas is being set with a width and height in HTML of 768px.
Within my fabricjs canvas init I've got:
editor.canvas = new fabric.Canvas('editor')
editor.canvas.setDimensions({
width: 1080,
height: 1080,
allowTouchScrolling: false,
backgroundColor: 'rgba(55, 55, 55, .33)',
rotationCursor: 'url(/static/img/rotate.cur) 10 10, crosshair'
}, {backstoreOnly: true})
The problem is when you call the editor.canvas.toDataURL() method the size of the goes from 768px to 1080px
If you call the browser's native canvas.toDataURL() method there isn't a jump in size.
Anyone bump into this and have a possible fix?
Here's a simplified jsfiddle:
https://jsfiddle.net/m8dhmbtu/23/
Click on the "Native Canvas.toDataURL()" and you'll get the results to console.log and there will be no change to the displayed canvas in the preview window.
Click on the "Fabricjs canvas.toDataURL()" and you'll also get the results (the same) to console.log however; you'll also get a jump in the size of the in the preview window...this is what I'm trying to prevent.
I think the problem is actually a bug.
You set the canvas to 1080 for backstore dimension only, meaning that the canvas will be sized but the css will be left untouched.
A dataurl will reset the canvas after the process to fix it back in case the export to data url had a multiplier.
while this can be fixed at least for the non multiplied situations, a proper fix is needed.
The proper fix consist in setting backstore only during export so that the css does not get touched.
A better fix would be to do not touch the original canvas and create one on the fly just for exporting.
please go on official fabricjs repository and open an issue for this.
How to set image size when using liferay-ui:logo-selector as
<liferay-ui:logo-selector
defaultLogoURL='<%=themeDisplay.getPathImage() + "/organization_logo?img_id=0"%>'
editLogoURL="<%=editOrganizationLogoURL%>" imageId="<%=logoId%>"
logoDisplaySelector=".organization-logo" showBackground="<%=false%>" />
I just can't get it done.I can change image size while displaying logo using img html tag.
As #rasabihariKumar mentioned in the comment, it is not possible to set the image size i.e. the height or width of the logo through <liferay-ui:logo-selector>.
One thing you can do is upload the logo with the correct dimensions
or else extend the <liferay-ui:logo-selector> tag through a hook or ext so that you can send the image width and height to the tag.
Or you can change the image size through javascript after the whole page is loaded through javascript. This answer may help you.
I want to build a website that looks exactly the same across all screen width's, which means the whole website will scale according to the screen's, or more accurately, the viewport's width.
This is relatively easy to do for SVG images and I have all images correctly scaling according to the viewport's width. The viewport's width is the point of reference, from which all images scale. However, the point of reference for the text is different between any desktop browser and the iPhone's Safari (and I assume any mobile browser).
According to my research there seem to be two possible reasons for different sized text: a difference in the default CSS's or a difference in the rendering engines. Since I can't find any reference to pixel sized text on Chrome's default CSS or Firefox's default CSS, I assume this setting comes from the rendering engine.
My IP is dynamic so I can't provide a live example, but here are the screens comparing the same site in iPhone's Safari and Chrome on the desktop. Notice the huge difference in the size of the text.
Is there any way I can make the text have the same relative size in both these browsers?
I found the answer in JavaScript:
onresize=onload=function(){
document.body.style.fontSize=window.innerWidth/20+"px"
}
which sets the text size according to the viewport's width on the body element. Since all the text set in em's is sized in relation to their parents, all the text is sized correctly from the body element.
Furthermore, if you want to avoid the cascading hell by using rems and respect the original layout design from a let's say 1024px width you can stick with this:
onresize = onload = function(){
document.querySelector("html").style.fontSize = ( innerWidth * 100 ) / 1024 + "%";
}
You should try CSS Unit vw, like this:
body { font-size: 1.5vw; }
However, i am not sure it is supported by mobile browsers...
EDIT
Check for browser compatibility here.