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?
Related
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
I'm using Agora sdk for video calling feature in my app. I've tried the advance iOS example, and currently able to see the video call between two users.
However my UI needs to show it in grid layout of same size items (maximum 8 video call views)... Like a vertical UICollectionView of equal sized cells. (screenshot below)
I've tried the Advanced video example from here - https://github.com/AgoraIO/Advanced-Video but couldn't figure out how to make the grids.
Kindly guide me how to do this. Thanks.
I have a small demo that creates NxN grids of all the video feeds in a chat in this example.
https://github.com/maxxfrazer/Agora-iOS-Swift-Example/blob/248a1d2291060891f2fda92a657c2067d841d964/Agora-iOS-Example/ChannelViewController%2BVideoControl.swift#L108
it just leaves black holes where the other ones should be if there's not a square number of people in the chat, but hopefully it is enough to get you started with repositioning views based on the number of connected users.
I'm using multer node and express to upload a image to my app. But some images shows rotate 90 degrees when it's on the client.
why is this happening?, how can I fix it?
By the way I'm using vue on the client and for the upload process, of course I use formdata
UPDATE
After research and comments from the guys above, its a EXIF problem. Any code ideas to solve this?
The behaviour you are experiencing is probably caused by the Exif Orientation metadata.
There is another question here on Stackoverflow about this problem: JS Client-Side Exif Orientation: Rotate and Mirror JPEG Images
The selected answer points to a project called Javascript-Load-Image as a possible solution, that basically means you will have to take the orientation in consideration when rendering the images to get a consistent behaviour.
Another possible alternative would be to edit/remove the orientation metadata in your backend.
Check the following resource for more information:
JPEG Image Orientation and Exif
This is most likely caused by Exif metadata (just like #Romulo suggested).
Browsers ignore Exif metadata when displaying images and that's why you're getting this behaviour.
To check that this is related to Exif take 4 pictures with different phone orientation (landscape left, landscape right, portrait, upside down). One of them will be shown properly, while the other 3 will be rotated. (Also note that if you're using the front camera, the image will also get mirrored).
Not all camera phones do this, but iOS does it consistently. The reason for this is performance. When rotation the phone the sensor also rotates and the picture taken doesn't take the rotation into consideration.
To properly show the photo, the image needs to be rotated, but if you just change the Exif metadata then you don't need to do it. Of course, any client that shows the image needs to be aware of this information (and iOS Photos and such are aware).
This has nothing to do with multer, but with the images are stored.
The bottom line is that you need to rotate the image to compensate for this.
Take a look over this npm package to adjust your image on the server side.
This may be a bit long, but thank you in advance for any assistance.
I am trying to develop a web app that will allow the user to interact with a wireframe 'drawing' of a chosen product and customize each path with either an uploaded image, color/pattern or add whatever text...or all, if they choose (something similar to customizing a greeting card)...for THIS question, I will start with the image part....
Here is what I have so far: http://jsfiddle.net/rednevednav/C9aDm/
What's the most effective way to able to use any image...one that has been uploaded by the user...to append the fill of a selected path and then be able to drag it around, resize it and rotate BEHIND the selected path (so they can control the part of their image that gets 'cropped'? (*Note: I've searched for months and haven't found anyone else doing this outside of Flash....MyPublisher.com gets really close, but it's all squares and no SVG...I've looked at using ImageMagick and 'dst_in' on the server side...but after hard coding an image into svg...like on my jsfiddle...it seems that this could be done client side)
Should I be using Raphael for this application in the first place? Or?
**Hoping to stay within the Raphael framework (if using at all) in order to maintain the IE support afforded out-of-the-box that it provides; I understand that too much java hacking kills this. Of course, the 'finished' product will need to be downloaded as a .pdf....but that's another question for another time.
EDITED: # Thanks to an answer to my question HERE, I've update my JSFiddle with how to get URL from an uploaded image and use to fill path in Raphael paper. So that leaves 2 questions on this subject that I'm still struggling to resolve:
1. How to use this uploaded image to be able to drag and drop onto path to update fill?
2. How to first select which path I want the uploaded image to fill? (for when drag/drop is not available)
Thank you again in advance of any assistance!
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