My intention is, having a Container, with a predefined width, made scrollable if the sprites inside occupy more width than the container.
Currently, if i set the width after adding all the sprites, the contents are automatically resized, which is not i wanted.
Sample code:
var container = new PIXI.Container();
container.width = 150;
stage.addChild(container);
for(var i=0;i<5;i++){
var eachImg = new Sprite("xxx.png"]);
eachImg.x = i*50;
container.addChild(eachImg);
}
How to code achieve such an effect?
Containers themselves don't really have a width and height... those values are just the overall dimensions based on where it's children are. Changing the width and height just changes the scale of x and y.
There's a WIP for a scrollable container https://github.com/pixijs/pixi-ui
and https://github.com/Ezelia/EZGUI also shows some effects of scrolling containers.
Related
Is there a way to preserve image proportions when using an tag?
The docs mention hard coding the dimensions but that's problematic when requesting arbitrary images
https://aframe.io/docs/0.6.0/primitives/a-image.html
as far as i see, the a-image is just a a-plane with an image source in a material.
It means the image will be streched over the plane, you can only mess with the
<a-image> height and width, which are the a-plane's height and width in meters,
<img> height and width, which specify the image dimensions in px, but the image still will be streched over the plane.
You could try to do it automatically, within a component, setting the a-planewidth and height depending on the input <img> width and height, having a px-meters ratio:
AFRAME.registerComponent('imageSetter',{
schema:{
img:{type:'selector'}
},
init:function(){
let lowResRatio = 0.01;
this.el.setAttribute('height',this.data.img.height*lowResRatio);
this.el.setAttribute('width',this.data.img.width*lowResRatio);
}
});
Check it out in my fiddle: https://jsfiddle.net/gftruj/5d9j9nqm/2/.
Otherwise, You need to prepare the images earlier on.
UPDATE
You can modify the component so it gets the image dimensions, gets a height/width ratio, and sets the width and height accordingly:
AFRAME.registerComponent('foo',{
schema:{
img:{type:'selector',default:''},
height:{}
},
init:function(){
let data = this.data;
let ratio = 1/100;
this.el.setAttribute('width',data.img.width*ratio);
this.el.setAttribute('height',data.height);
this.el.addEventListener('materialtextureloaded', (e)=>{
var w = e.detail.texture.image.videoWidth || e.detail.texture.image.width;
var h = e.detail.texture.image.videoHeight || e.detail.texture.image.height;
let ratio = w/h;
this.el.setAttribute('width',data.height*ratio);
});
}
})
live fiddle here: https://jsfiddle.net/5d9j9nqm/4/
Now it's fixing itself to a given height.
I have a small image in my project that I would like to resize responsively any time the resolution changes. I am currently using the class "img-responsive". With this class, the picture doesn't start resizing until the window reaches its edge. In this case, since it's a relatively small picture, this never happens.
Is there a built-in Bootstrap class I can use to have the image resize responsively at all times?
I ended up using JavaScript
$(window).resize(function(){
if($(window).width() < 1100){
var width = $(window).width();
var ceiling_width = 1100;
var difference = ceiling_width - width;
var decrease = difference * 0.2345;
var full_logo_width = 404;
var new_logo_width = full_logo_width - decrease;
$("#my_logo").css({"width": new_logo_width});
}
});
If the browser's width gets lower than 1100px then the picture will start shrinking. My image has a width of 404px by default (if the browser loads with a width of more than 1100px). I wanted the smallest possible width for the image to be a little over 200px. The per pixel decrease to per window width decrease variable (0.2345 in this case) was calculated based on this. I used the following CSS to set an upper and lower limit for the image's width.
#my_logo{
max-width: 404px;
min-width: 210px;
}
I have a div with some text:
<div style="white-space:nowrap;overflow:none;width:50px;">
With some text in it
</div>
How can I scale the font size of the text so all of the text is visible?
Contrary-wise. You could wrap the text in an interior DIV, measure its width with JavaScript. Test if that width is wider than the parent DIV. Get the current font size, and incrementally move it down 1px at a time until inner DIV's width is less than or equal to the outer DIV's width.
I've been doing something like this, to set the text scale relative to the parent (or window) width / height. You can avoid jQuery by using offsetWidth and offsetHeight instead of width.
var setBodyScale = function () {
var scaleSource = $(window).width(), // could be any div
scaleFactor = 0.055,
maxScale = 500,
minScale = 75; //Tweak these values to taste
var fontSize = (scaleSource * scaleFactor) - 8; //Multiply the width of the body by the scaling factor:
if (fontSize > maxScale) fontSize = maxScale;
if (fontSize < minScale) fontSize = minScale; //Enforce the minimum and maximums
$('html').css('font-size', fontSize + '%'); // or em
}
Short Answer: You don't.
You would have to try a size, render it, see if it fits, try another size, render it see if it fits, etc. Then you have to handle the case where the calculated font size is so small no one can read the text.
There are other options, if the text doesn't fit, add an ellipsis (...) to the end of the text, when you mouse over it, the div could expand, you could use a popup window or tooltip with the full text, or put the full text in a larger area of the screen.
Find another way.
Came across this JQuery plugin in my quest to find the same.
Github
Demo
Also came across this Jquery script when I was looking for the same thing. It has the added benefit over the others, as far as I quickly tell, is that it also adjusts for height as well as width.
Comes from here: http://www.metaltoad.com/blog/resizing-text-fit-container
function adjustHeights(elem) {
var fontstep = 2;
if ($(elem).height()>$(elem).parent().height() || $(elem).width()>$(elem).parent().width()) {
$(elem).css('font-size',(($(elem).css('font-size').substr(0,2)-fontstep)) + 'px').css('line-height',(($(elem).css('font-size').substr(0,2))) + 'px');
adjustHeights(elem);
}
}
I have a side bar that contains two divs. The first div may or may not have content, depending on what else is done on the page. The second div contains a long list of things and has a limited height, so scrolling is possible. I want to have the sidebar be as tall as the page, and I want the list container in the sidebar to be as tall as the sidebar minus the height of the header (which will change while using the page). I don't care about limiting the size of the header. The biggest is will get isn't anything significant.
Right now I'm just setting the height of the list container to be some number that is won't go over a maximized window height if the header div as as much content as it can, but this leaves an empty space at the bottom when the header is empty, and still doesn't work very well if the window is resized.
The layout is similar to this.
Is there a css solution to what I'm looking for, or will I have to use javascript and get window height/set div heights in pixels? I'm fine with either, it just seemed like there should be a CSS way to accomplish it.
If you're not opposed to using a little jQuery, here's a little code snippet that should help you equalize the height of the two divs, no matter which has more content. You can change it to your liking too.
var leftHeight = $(".left").height();
var rightHeight = $(".right").height();
var maxHeight = 0;
var div = "";
if (leftHeight >= rightHeight)
{
maxHeight = leftHeight;
div = ".right";
}
else
{
maxHeight = rightHeight;
div = ".left";
}
$(div).each(function(){
if ($(this).height() > maxHeight) { maxHeight = $(this).height(); }
});
$(div).height(maxHeight);
and credit where credit is due, this is an edit of a code snipped found at css-tricks.com
is this what you want?
http://jsfiddle.net/YWNyr/
CSS tips:
If you use 'absolute' positioning, width,height,left,top, etc... is relative to the first ancestor that has a "position" property other than "static", or the body if nothing is there.
for static menus, it is common to use 'position:fixed' as it will simplify scrolling issues
When using jquery its easier(and faster) to toggle a class than to change the DOM since that requires redrawing of the elements by the browser
-edit: for refreshing the sidebar size some javascript is necessary:
$('#headerAdd , #headerRemove').click( function()
{$('#sideContainer').height($(window).height()-$("#header").height());
} );
Try setting the height of your list container to 100%, and your overflow to scroll:
#listContainer {
height: 100%;
overflow: scroll;
}
This will keep the list in a scrollpane that reaches to the bottom of the page, no matter how large the header grows or shrinks.
I have custom flex component inherited from UIComponent (compiled, no source code access). It has fixed width-to-height proportions and it's scalable. If I set its width and height to 100%, it's trying to fit parent's size, but it keeps width-to-height proportion, so if it's proportion does not equal parent's proportion, there can appear empty space near this component when resizing parent.
What I need, is to fit my component completely to parent's size. Is there any nice way to do this? I could listen to parent's resize event, and play with component's scaleX and scaleY, but may be any better way exists to solve my problem (any property?). Thanks.
A great way is to use greensock's AutoFitArea.
Coding is as simple as the following
var area:AutoFitArea = new AutoFitArea(this, 50, 70, 300, 100);
area.attach(myImage, {scaleMode:ScaleMode.PROPORTIONAL_OUTSIDE, crop:true});
which would constrain whatever is inside do the given dimensions (300,100) from there on out, you can just change the area's width and that will figure it all out for you.
hope it helps
Personally, what I would do is have the component within the parent set at width/height 100%, then within the component itself, override the updateDisplayList function (which returns the unscaled width/height) and then resize whatever children you're trying to display depending on the width/height of this container. Something like this:
override protected function updateDisplayList(unscaledWidth:Number, unscaledHeight:Number):void
{
if(this._child!= null)
{
if(unscaledWidth > unscaledHeight)
{
this._child.height = unscaledHeight;
this._child.scaleX = this._video.scaleY;
}else{
this._child.width = unscaledWidth;
this._child.scaleY = this._video.scaleX;
}
}
}
Should do it.
Should the component keep its proportion? If not, you could just, as you said, listen to the resize event of the parent and set the width and height to the components values.
If the component should keep its proportion you could resize the background of your component so that it fits the parents size and resize the content of you component with its proportion seperatly.