I have found some problems in displaying images larger than 10000px width or height in spark Image component. Despite of setting maximum width/height or explicit width/height to larger sizes the image is being scaled down to 10000px.
<s:Image id="image" source="big.jpg" maxWidth="20000" maxHeight="20000" width="14400" height="10800" x="-9200" y="-8200" />
<s:Label id="debug" />
I set these coordinates to be sure I see the bottom right corner of image (it's scaled down proportionally). In debug I'm displaying the mouseX and mouseY of image.
protected function application1_mouseMoveHandler(event:MouseEvent):void
{
debug.text = image.mouseX + ", " + image.mouseY;
}
Image component uses BitmapImage internally: Image.imageDisplay.
If BitmapImage works fine, manually setting maxWidth and maxHeight of Image.imageDisplay might fix the bug.
Added:
When you manually setting the maxWidth and maxHeight of imageDisplay, I recommend using a custom Skin to set them. Or they could be set after the image is loaded and scaled already.
Additional Information:
The default value of BitmapImage.scaleMode is stretch, but the default value of Image.scaleMode is letterbox. So, if you see BitmapImage works fine but Image scales differently, check this property.
The answer is simple - check out the documentation: http://flex.apache.org/asdoc/spark/components/Image.html
Maybe I should write it here, as nobody actually reads that docs - 10k is the limit of both width and height for that component.
edit: Are you serious you need image larger than 10k?! Can you imagine how much memory this is? :)
Related
I have a simple bitmap image 3px wide and 150px high included as the top banner in my layout.
<s:BitmapImage id="blueBanner" source="{this.bmpimg}" width="100%"/>
The rest of the content is centered below this.
When the page opens no matter the size of the browser window, the image always fills the width available.
I have a browser window resize handler that resets my main content below the banner to the center of the new window size and this works perfectly.
But no matter how many times the browser is resized, the BitmapImage will never stretch wider than the original window width.
I have tried every property and method of BitmapImage that I think could affect this in the resize handler but nothing I can find has any effect at all.
I cannot understand how it remembers the original stage width to begin with.
Its parent containers are all set to 100% width and there are no unusual skins or any other reference to this object in the whole project except in a function where it can be included in the layout or not, but this function is never called in this case.
Can anyone offer any clue as to why it won't stretch automatically?
Doug
Simple , just set the width to screen.width and you are good to go.
<s:BitmapImage id="blueBanner" source="{this.bmpimg}" width="{screen.width}"/>
Thanks for all the responses. In fact I solved the problem by adding the BitmapImage line to the Application Skin. Once it's here as well as in the layout it works. I have no idea why it needs to be in both places, but once it's set up like this everything works correctly.
Setting ScaleMode makes no difference and setting screen.width either in the blueBanner tag or later in the resizeHandler (because not always available when the tag is run) also makes no difference in my layout.
Doug
This is a continuation of CSS Display an Image Resized and Cropped. The answer there seems to be okay for that user but I need some help to improve upon that answer...
Q: how can the resize (scale) be related to the size of the image at runtime. i.e. I don't want to hard code something like "width: 320px; height: 221px;" in the style - that works if you know the dimensions of the image up front.
Here are some jsfiddles:
http://jsfiddle.net/VdX68/ - based on the original thread answer. Works if you know the dimension of the image up front.
http://jsfiddle.net/VdX68/4/ - you don't have to know the dimension of the image, but only works for 100% scale. (here I simply removed the width, hight from the .scalePan class.
http://jsfiddle.net/VdX68/2/ - using width and hight as %. This scales the image to the size of the containng div not the image original dimensions.
I'm looking for a way to scale the image to a % of the original dimensions, not a % of the container it is in.
Any help much appreciated.
I understand you want to do this, but I'm not completely sure.
$(document).ready(function() {
var wdth = $('img').width();
var hght = $('img').height();
$('img').css('width', wdth / 100 * 90 + "px"); // new width is 90% width of image
$('img').css('height', hght / 100 * 70 + "px"); // new height 70% height of image
});
Working example: http://jsfiddle.net/VdX68/18/
You don't have to use JQuery, you can do this with regular javascript also.
I got a problem with images and its pixels probem.well let me tell you this.I got a picture of 2448 x 3264 pixels. So its a big image I just decided to reduce its size using this way
<img src="1.jpg" style="width:600px;height:500px"/>
But there is a problem I see, the picture looses its clarity and its visibility, it looks like pulled it close and the person in the images looks so ugly.but using the original size makes look so big . I am sure there is a way to do because I see google images result and also on some websites I tried to see thier code but Could not figure it out.
Could anyone please tell me how do i make the images look good even when they got too long resolution and make them fit in the given width?
Update
Okay now i understand we need some server side image processing and could anyone tell me what would be the way to do it Thanks
The most wide-used practice is to resize the image server-side. When the image is uploaded to the server (e.g. by the user) the server takes it and creates and creates needed thumbnails.
Unfortunately this cannot be done with HTML, CSS nor JavaScript. And there are a lot of cons of forcing the size of the image with CSS. For example the user have to download the whole image ( I guess yous is about 6MB ) and it could take a lot of time .
Withour any language you cant do it, or you have to edit the image and need to upload to your host.
Try using the plain html. It will also help if you have the right width:height ratio (in this case, 3:4)
so:
<img src="1.jpg" width="375" height="500"/>
To gain better quality you need something more, then only HTML. You have to resize images manually, either use some server-side scripting to prepare images before rendering (better even do it on uploading if you sure about specific dimensions).
What you need is server side image processing. For exaple phpThumb or another implementation depending on your serwer platform.
Example:
<img src="../phpThumb.php?src=1.jpg&w=600" />
the phpThumb will open image passed in src, and resize it to width passed in w -> the process image on the fly and outputs to the browser.
For pictures to maintain their clarity, you need to ensure that you maintain aspect ratio. Aspect ratio is the width/height ratio of images and if you resize images maintaining the ratio, then their clarity is maintained. You are getting the resized image to be messed up because 2448/3264 != 600/500.
Now tag resizes by aspect ratio, if you give only one of the attributes of width or height. eg:
<img src="your_src" width=600>
This will render maintaining aspect ratio(it calculates the height needed). However, this could lead to problem sometimes if you have a max-height constraint, because the recalculated height could exceed the div height, if your div has a max-height.
If you have a max-height and max-width constraint, you can use the following code to resize the image using JS. I am assuming that max-width and max-height values as 600px and 500px respectively and you can change as per your needs:
height = this.clientHeight;
width = this.clientWidth;
aspectRatio = width / height;
if (height > width)
{
height = 500;
width = height * aspectRatio;
}
else if (width > height)
{
width = 600;
height = width / aspectRatio;
}
this.setAttribute("height", height+"px");
this.setAttribute("width", width+"px");
I want to insert an image in a webpage and I want it to fit in a 120*40 space.
The problem is, original images can have about any size (400*40, 30*220, etc.)
so if I set height attribute to 40, I might find myself with images larger than 120 width. The same goes if I set a 120px width.
If I set both width to 120 and height to 40, well it fits, but the original ratio is lost, and I don't want that.
What would you suggest ?
Get the original properties of the image in javascript and then set one of them (either to 120 width or 40 height) so that the other fits in 120*40 ?
There are a lot images like that in one page so I think this method is a bit heavy...
PHP solution :
<?php
list($width, $height, $type, $attr) = getimagesize($image);
if($width/$height>3)
$height *= 120/$width;
else
$height = 40;
?>
<img src="<?=$image?>" height=<?=$height?>>
see below for a javascript solution and a CSS solution
css properties max-width and max-height are what you need.
My guess is that it will resize itself if it reaches one of these.
I have used this alot in previous web projects.
But i havent used the combination of both yet.
EDIT: I've sais this in a comment, but setting both those properties does work in my tests. It keeps the ratio and resizes by the limit it reaches first. Do not set any width or height properties, these might cause problems
JavaScript is quite fast, so why not try it?
I'd just stick to finding the aspect ratio and adding some checks:
var width = image.width;
var height = image.height;
var ratio = width / height;
if (width > 120) {
width = 120;
height = 120 * ratio;
} else if (height > 80) {
height = 80;
width = 80 * ratio;
}
image.width = width + 'px';
image.height = height + 'px';
As you seem to be using PHP, ImageMagick can resize an image to fit inside of a predefined box. I only know how to do it via CLI, as I don't use PHP, but I bet the PHP code would be simple.
I was actually searching for an answer to a different query but came across yours.
I use this to resize images which I am finding is very handy in a number of my scripts, but what I would suggest is that you resize the image to a little bigger than the longest side of the container and then use css to center the image both horizontally and vertically and set the container with overflow:hidden;
You lose a small bit of the image around the edges but at least they are all inserted without any stretching or squashing.
Hope that helps you or anyone else trying something similar.
I have a s:Group with few fixed size components in it, these are lets suppose 200x300, 300x150 etc
Now if i resize s:Group with resizeMode=Scale, (scale down). and try to read the scaled down size of these child components but they still has the same old height and width.
how can i get width and height after scaling down the parent group?
Thanks
Try myComponent.transform.pixelBounds.width. That should give you an actual measured width wrt the visible X-Axis. If you are rotating, but you want the scale along X-Axis wrt the component, see this post on obtaining the scaling of an object.
Hey there :]
At first i thought it would be an easy task to get the width and height. But when i tried it, none of explicitWidth and measuredWidth worked, when resizeMode is set to "scale" of the s:Group.
So i found a way but i'm not sure if it's the best solution:
write this in your script tag:
import mx.core.mx_internal;
use namespace mx_internal;
then if you have
Group id="group" resizeMode="scale"
and a s:Button id="myButton" inside it
in order to get the myButton width for example, just compute group.$scaleX * myButton.width
Hope this will work.
all the best,
blz