I have a hero with multiple images, I want to display images according to screen sizes, for example, if the user is using a big screen, the hero will load the large/wide images, and if he uses a phone, the hero will display a different image that is not wide to fit the screen.
I do not know how to do this with nextjs, there is no way to specify which image to load on a different screen.
I did solve the problem using nextjs's useMediaQuery
{ const mobile = useMediaQuery(theme.breakpoints.down('sm')); }, but the results aren't perfect, because if you use mobile ? [....] : [....] you cannot add 'priority' to the image components, if you try to add it, it will load both images first, then execute the conditional statement to hide one. so you have to sacrifice that.
It seems like Image doesn't support that use case. I found this and it works as expected. https://github.com/vercel/next.js/discussions/32196#discussioncomment-1761938
Related
I'm using OSD to display a few pages from a PDF. Each page is lined up one on top of the other.
I'd like the viewer to start at the top of the image, zoomed to fit. I've played with various settings, but what seems to work for one image of three pages, doesn't work for another image of five. I can get close to what I want with this command:
viewer.viewport.panTo(new OpenSeadragon.Point(.5, .5));
viewer.viewport.zoomTo(1);
But I'll be honest that I don't quite understand what that means, and I have no idea how to set this as the "home" bounds. I've been through the documentation several times, but this escapes me.
Appreciate any guidance!
Rather than using panTo and zoomTo, I recommend using fitBounds instead. You'll want to base it off of the aspect ratio of your viewer so the result is snug. Something like so:
var oldBounds = viewer.viewport.getBounds();
var newBounds = new OpenSeadragon.Rect(0, 0, 1, oldBounds.height / oldBounds.width);
viewer.viewport.fitBounds(newBounds, true);
The true in the fitBounds is to make it snap there immediately instead of animating.
I have developed an LWUIT app. I have two types of images dispayed in the app. One coming from server side that need to displayed (like a photo posted and saved to server side) and one packaged in my jar and displayed mainly as icons (like a music icon, loading animation gif etc). I need to display all images according to the sreen size and resolution. The first kind is displayed by taking the screen display height and width and then use scale method and show a scaled version of the image. But however I have no idea how to show the second kind. i.e. icons. Example, my loading image looks good in most of the phones but for some phones like samsung, it looks blurred and over-sized. How to do this. My basic idea is to keep 3 types of images of icons like icon_width_lowXheight_low.png, icon_width_mediumXheight_medium.png and image_width_highXheight_high.png and show it based on the screen size. Please let me know the bets way to achieve this?
Thanks,
Parvathy
You should use MultiImages which were added in LWUIT 1.5. I don't have a link for this in LWUIT but our work in Codename One is pretty close to this so check out the How Do I? on multi images (and I suggest migration to Codename One regardless).
I think that you will need to use this
Image i = Image.createImage("your image path here");
i = i.scaled(widthValue, heightValue);
And put this values in relation to the Display.getInstance().getDisplayHeight() and Display.getInstance().getDisplayWidth()
Right?
I am trying to develop a wireless phone projector, wherein I will be showing phone screen on projector using a projector connected PC.
I am bit confused on how to capture screenshot of any running application in j2me.
Can you help?
Just want to capture screenshot in j2me
I'm not really sure of what you wanted to do but if you are thinking of a way for your app to get a screenshot of its screen then what I can say is that you can and cannot do it. Why you cannot do it? Say your using a canvas in creating your screen. I think there isn't a way of converting the Canvas to an Image. The Canvas is limited to just drawing itself on the phone screen. But, like what I have said earlier, you can also create a screenshot of your app screen. What you need to have is an Image object over your Canvas. Why Image? It is because the Image object can be converted to an image file. And the image file will be your screenshot. But, of course, there should be something that dynamically creates the image source for the image object on the canvas.
Image myScreen = Image.createImage(createScreen());
A method that creates the screen:
InputStream createScreen(){
//dynamically creates the source of the screen
}
You can have a screenshot using myScreen. The drawback here is that rendering is quite slow. This is possible but I think this is kind of difficult to implement.
With this snippet code you can take a "screenshot" of the Canvases in your app:
public Image getScreenShot() {
Image screenshot = Image.createImage(getWidth(), getHeight());
Graphics g = screenshot.getGraphics();
paint(g);
return Image.createImage(screenshot);
}
Add getScreenShot() to any canvas that you want "screenshot" of it.Then you can get it's RGB and convert to byte[] and pass it on the network.
References:
developer.nokia
I have images titled like so in my app:
image~iPhone.png
image#2x~iPhone.png
In interface builder I am loading image.png into my UIImageView. I also programatically load some images into a different view using imageWithContentsOfFile. The images all load fine when I run in the simulator but I get no images when I run on the device. If I use the full name of the image in interface builder it works but I want iOS to distinguish between high res and lower res. I have tried a lot of different things but can't figure this out. I see this error in the debugger as well:
Could not load the "image.png" image referenced from a nib in the bundle with identifier "com.mycompany.myproject"
Xcode 4
Deployment Target 4.1
Base SDK 4.3
Thanks for any help.
Ok...so after much experimenting I got it working.
I had two images named:
image#2x~iPhone.png
image~iPhone.png
and I was trying to load them using IB or imageWithContentsOfFile using
image.png
This worked fine in the simulator but not on my device. I just got a blank white screen where the image should be.
I finally renamed the high resolution image to:
image~iPhone#2x.png
Moving the '#2x' modifier after the device modifier(~iPhone) when referencing my images allowed it to work the way I understood that it should from reading Apple's docs. I was under the impression that you didn't need to include the device modifier when referencing images but I had to.
To sum up, I am now using
- image~iPhone.png
to reference my images in IB and programatically for some images. I now get iOS recognizing that I am on a retina screen and loading the #2x images accordingly. So the #2x modifier had to go at the end and the ~iPhone modifier had to be included in the name of the '.png'.
That is what worked for me. Hope it helps someone else. Note that I am only building my app for iOS4.1 and above so there might be some issues with this if you are supporting previous version.
iOS does not automatically pick the right image for the device like that. You are going to have to write code to check which device it is, and set the image by full name.
e.g. if ([[UIScreen mainScreen] scale] == 2) // set hi res image
Or, you can just use the same image in both, and set the content mode to scale to fill. It will look the same.
EDIT: Try writing either ~iphone (lowercase), or just don't write ~iPhone at all on the file name. If your app is not universal, then writing the ~iphone suffix is completely pointless.
iOS file system is case sensitive and device modifiers should be lowercase, it should be
image~iphone.png
image#2x~iphone.png
The #2x comes before the device modifier.
See the resource programming guide
I am new to developing on the iPhone so am sorry if this is an easy question, but it has had me stumped for a little while.
Basically the app displays data retrieved from an XML feed. In that feed is an element that contains the path to an image. eg http://www.myserver.com/myimage.jpeg.
I want to be able to display that image in the list view of my iPhone app.
Most importantly, I don't want to stop the list drawing for each image, the rest of the data should be displayed immediately and then each image downloads and displays as quickly as data speed etc make it available.
What is the best way of downloading that image and displaying it?
Ideally can someone point to some working example code.
Thanks
Stephen
Displaying the image: you could create a UIWebView and just point it to the path - and then it's fully zoomable too.
Displaying in the list view:
//Somehow download your image...
cell.image = Your Image