My application has two views, a live mode and a preview mode. Both of these have windows which can be resized. They are the same html file. I am looking for a way to get the font-size to resize proportionally for both views when they are resized.
I am using jQuery as my javascript framework.
Is there a way of getting this to work in either CSS or jQuery?
I know I am answering my own question, but the answer above was helpful but not enough to suffice as one. So this is how I ended up doing it.
First I set up this function which calculates a suitable font size based on a given width.
function getFontSize(width){
sizew = width / 100;
size = sizew * 1.5;
return size;
};
Then I got the function to run on load and on re size of the window then modify the body font size accordingly.
$(window).resize(function(){
size = getFontSize($(this).width());
$("body").css("font-size", size + "px");
}).resize();
All you have to do from there is set up any element to have its font-size re-sizable by giving it an "em" or percentage font size.
Sure, define a javascript object which has a function that takes in a width and height parameter. It should return your desired font size based on that width and height. Then, attach a resize event handler to your window, which calls that function you just defined and sets the font-size css property on the document body of the window.
You must use this plugin to get a resize event on an html element that is not the window: http://benalman.com/projects/jquery-resize-plugin/
var fontsize = function FontSizeBasedOnDimensions{
var that = {};
that.GetFontSize = function(height, width){
//Make some decisions here
}
return that;
}();
$('#yourwindow').resize(function(){
var size = fontsize.GetFontSize($(this).css('height'), $(this).css('width'));
var currentsize = parseInt($(this).css('font-size'),10);
if(size != currentsize){
$(this).css('font-size', size);
}
});
Related
I'm after a simple javascript function that will detect the total height of my web page which is dynamic and apply it to the height of a div which is the page background. Would it be possible to implement it?
The div is called bg...
Any ideas? Thanks in advance
Try:
var height = body.offsetHeight ? body.offsetHeight : html.offsetHeight;
document.getElementById ('divID').style.height = height + 'px';
Here an useful documentation:
http://www.quirksmode.org/dom/w3c_cssom.html
Im using currently following code to do that:
var getBodyHeight = function () {
var d = document,
bd = d.body,
dd = d.documentElement,
max = Math.max(
bd.scrollHeight,
bd.offsetHeight,
bd.clientHeight,
dd.offsetHeight,
dd.scrollHeight,
dd.clientHeight
);
return max;
};
This is what I use to figure out the height of content in iFrame for the purpose of adjusting it properly.
var body = document.body,
html = document.documentElement,
height = 0;
height = body.offsetHeight;
if(height === 0){
height = html.offsetHeight;
}
The reason for checking the body first is that the height of html is actually the height of the iFrame, which could be bigger than the content itself. However, in certain cases such as when body has no height, then it falls back to use height of html instead.
For your case, you might want to experiment with a similar scheme. I'm not sure why you have to use a div to set background so I can't really suggest a better alternative (if any).
Solution based on the comment below:
What you can do is the following. Have a div inside the main container with position absolute, width/height 100% and z-index -1. Then it will always be the correct size no matter how large the contain grow or shrink. With this approach, you will have to make sure that container always has size. This is a pure CSS solution, which might be simpler than using Javascript to adjust.
var height = screen.height;
var width = screen.width;
var resolution = width+"x"+height;
alert(resolution);
it gives the resolution of the screen.i know you want page height and width but it will help you later in web development. i am using it as most important part for my web!
I am trying to create a textarea element that has a programmatically-defined original/default size, but which the user can resize within defined limits that allow it to both grow and shrink.
I have tried setting the resize, min-width, max-width, and width properties of the text-area, but, thus far, this only allows the user to grow the textarea element, not shrink it. The browser will allow the user to size and resize the element within the bounds of width and max-width, not between the bounds of min-width and max-width, as intended.
Is there a simple way of specifying a default size that will not also be treated as a minimum size?
Here is the code I am working with:
function textAreaWithDefault(size) {
var ta = document.createElement("textArea");
ta.style.resize = "both";
ta.style.minWidth = "100px";
ta.style.width = size + "px"; // default size
ta.style.maxWidth = "500px";
document.body.appendChild(ta);
}
A pure css and/or javascript solution is preferred, but it only has to work on web-kit.
I would look into fittext or similar scripts:
http://fittextjs.com/
This does exactly what you are describing.
Try to set min-width equal to max-width and width to 0
I'm trying to get font size to adjust to fill a container. This alone obviously is not an issue. However, the container is also not a static size, it's size is set to a % of the browser window and I would like the font size to dynamically update on browser resizing, along with the container.
I had been using a modified script that I found which adjusts the font size by a % of the browser height and width.
$( document ).ready( function() {
var $body = $('body'); //Cache this for performance
var setBodyScale = function() {
var scaleFactor = 0.0001,
scaleSource = $(window).height(),
scaleSource2 = $(window).width(),
maxScale = 200,
minScale = 10;
var fontSize = (scaleSource * scaleSource2) * scaleFactor; //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
$('body').css('font-size', fontSize + '%');
}
$(window).resize(function(){
setBodyScale();
});
//Fire it when the page first loads:
setBodyScale();
});
I wasnt getting the desired result from this, so then tried changing this so that the scale sources were the container rather than the window. This somewhat worked however it didnt dynamically update, it would require a refresh of the page.
In short I cannot find a way to resize font size, to fill a container that's size is determined by a % of the browser window, on the fly.
Why invent something that already exists? There's already a great jQuery tool out there: http://fittextjs.com/
This isn't a real-world answer, yet, but viewport dependent font sizes are on the horizon:
http://css-tricks.com/viewport-sized-typography/
Currently it's only supported in Chrome Canary, but it's good to know it's coming.
I have the following function for calculating the height of .node. It then takes away the height of a possible image, .node-image, from the height of the .node, and sets a column, .node-content-column to have a height that is the difference (i.e. 500 - 50 = 450; column becomes 450 in height).
function initColumnSizer() {
imageHeight = $('.node-image').outerHeight(true);
resizeHeight = ($('.node').outerHeight() + 75) - imageHeight;
$('.node-content-column').removeAttr('style');
$('.node-content-column').css('min-height', resizeHeight);
$('.node-content-column').css('height', 'auto !important');
$('.node-content-column').css('height', resizeHeight);
}
This function gets called on page load, and resizes .node-content-column as expected.
It also gets called when a div within .node is toggled using jQuery.toggle(), but this calculation returns a larger number everytime, instead of reverting back to the original once this toggle is reverted.
Can anyone see where I am going wrong with this calculation? Or if I am going about it the wrong way?
Thanks in advance!
Karl
1) Maybe the problem is in outerHeight() function (it takes into account padding and border). Try using just height or clientHeight:
var img = document.getElementById('imageid');
//or however you get a handle to the IMG
var width = img.clientWidth;
var height = img.clientHeight;
2) why do you need to cleanup the whole elements' style?
and then you try to assign height = auto, and after that: height = resizeHeight - what's the purpose for that ? check the logic of your code.
outerHeight(true) will return height + padding + border + margin. Possibly, you might want to use height() ?
Most possible is that "larger number everytime" have always constant difference -- for example 75.
May be you just have some dependecies between .node-content-column and .node?
If your nodes like .node-content-column, .node and .node-image are all singles, then it's better to use IDs for them -- not CSS classes.
Is there any way to set the minimum size of a popup window through JavaScript?
My problem is that when someone makes it as small as he can the content just looks stupid.
When creating pop-ups, you can only set width and height. But since the pop-up was created, it means you can change the height and width of the window when the pop-up loads.
Simply place an onload event inside your pop-up window:
window.onload = function() {
if (document.body.scrollHeight) {
var winWidth = document.body.scrollWidth;
var winHeight = document.body.scrollHeight;
} else if (document.documentElement.scrollHeight) {
var winHeight = document.documentElement.scrollHeight;
var winWidth = document.documentElement.scrollWidth;
} else {
var winHeight = document.documentElement.offsetHeight;
var winWidth = document.documentElement.offsetWidth;
}
window.resizeTo(winWidth, winHeight);
}
edit: Tested in IE7,8, Chrome, Safari 4, Firefox 3. Working, but you might need to take into account the size of menu+address bars and such, as the window size will be the outer size, and this function will find the size of the content. So to be safe you should probably add a couple of pixels, and also turn off scrollbars in the popup to make sure they won't take up any space.
I do not believe that you can set a minimum using the Javascript new window. I know you can set the size and disable the scroll bars and prevent resizing, but that would answer the minimum, but also impose a maximum as well, which you may not be wanting.
Most browsers have a minimum width and height.
Internet Explorer 7
minimum width > 250px
minimum height > 150px
When using windows.open, you can specify the height and width of the window like this:
window.open ("http://www.stackoverflow.com",
"mywindow","menubar=1,resizable=1,width=350,height=250");
It is not the minimum size though, as the window will not be bigger when there is more room. You would have to check screen space yourself for that.
http://www.htmlgoodies.com/beyond/javascript/article.php/3471221
As seen in the link, you can set the minimum size. If you want to scale it so it gets bigger you must to that from within the popupwindow.