Is codenameone support add flash file.
Is codenameone support add Gif Image programmatically.
how to use create Graphics object.
Codename One or any modern mobile doesn't support adding flash files as those aren't designed for the mobile world.
You can add a gif image by using the "Add Animation" option in the designer tool and then using the getImage(String) method of the Resources object. That means you can't download an arbitrary gif off the internet but you can convert it to a res file and download that dynamically.
You can get a graphics object either by overriding paint(Graphics), implementing a painter etc. or by getGraphics on a mutable image see more here.
Related
I am having problems with multi image in the new GUI builder. It doesn't scale as should with individual skin or device screen. Is there another way to add multi image to scale according to screen size in the code?
I got this done very well in the old GUI builder. This is preventing me from having my app update.
Open the designer and verify that the image is indeed a multi-image and that resolutions exist for all the right DPI's.
Look at the code and verify that the image is fetched using getImage(String) and isn't manipulated in any way.
Verify that you are using Label and not ScaleImageLabel or some similar class.
The Phoenix demo was created using the new GUI builder and uses a lot of multi-images.
My app is too large for the 50 meg limit so I am looking at some ways to significantly reduce the file size.
If I discard a dpi what happens when it runs on that dpi? I have some HUGE backgrounds making my app very bloated, I was wondering if I can remove them all but say the HD one and it would scale or would it be simply empty? Or would I need to change the background image scaling to make it do this?
Also CN1 seems to use png, can I use jpg for selected items to save space? Backgrounds that are 2.3 meg pngs could be 35k jpgs.. Even if I wrote a script that jpeged them after I press save in the gui designer, this could work I assume?
Any any further final tips for reducing the size of cn1 apps?
A 50mb app is not only big, but prone to be slow on devices (performance wise).
To reduce your App size tremendously, do the following:
All my answers are based on old GUI Builder
For background image, use a single image (not multi-image) and style the form UIID to use the image and type IMAGE_TO_FILL.
Avoid using png image whenever possible, CN1 supports jpg perfectly.
Don't use images for basic icons, use fonticon. Thousand of icons could be made 100kb and of high quality svg image that doesn't pixelate. I will explain at the end of this list how to create your custom fonticons.
Avoid using 9-piece border image where it's not really needed, try to use solid background color if it won't ruin your design.
Delete unused images, they also take a lot of space. On your GUI Builder.
Re-use UIIDs, instead of creating multiple similar UIIDs.
Migrate your GUI Builder forms to code, I posted a sample form Class to answer another question here and also talk about similar thing here.
Delete UIIDs you're not using and in most cases, copy and paste UUID of unselected style to selected, instead of creating similar.
Be Careful with this. Keep your GUI Builder open, make sure Xml team mode is checked under File, save the GUI Builder after deleting Unused Images, without closing the GUI Builder, go to your project folder -> res -> delete theme.xml and the theme folder inside res folder (The name might be different if you've renamed your theme.res file). Now go back to your app and save again. A fresh copy of your res files would be saved in the same folder.
Minimise the amount of background images you use, Modern good looking apps are simple plain background apps. E.g, Facebook, Twitter, Uber, AirBnB, BBC News App and many others. Unless your app is actually a game or necessarily require rich images that have to be static.
Watch this video about performance tuning, It's a bit old but still contains useful information
If your app is bigger than 20 mb on iOS and 5mb on android, you should be worried about it's performance.
Creating fonticons:
Go to fontello.com and check the icons present, if there are icons you need that are not there...
Go to flaticon.com and search for it there, download it as svg and drag'n'drop the svg on fontello webpage. If the icon doesn't look as expected...
Go back to flaticon.com and download the image as black 512px png image and go to online-convert.com, convert the png to Monochrome svg file, this helps you to create a compound image that works well with fontello.
download the fonticon as zip on fontello and follow Shai's chat app example to use it. the zip contains demo html file to preview your icons and also a config.json that can be drag'n'drop on fontello.com to continue where you stopped.
I am need to capture video and click images via camera, in My application. I am a bit new to WPF and searching on google I found that ExpressionEncoder dll is used to perform video captures in WPF. I also need to change brightness, Contrast, saturation of video but I did not find it in expressionencoder code.
So can anyone tell how to set Brightness,contrast,... using ExpressionEncoder Dll Or Do I need to try something else?
Thanks in anticipation.
While you are using encoder dll for recording videos. please find below links.
http://www.codeproject.com/Articles/285964/WPF-Webcam-Control
http://blog.catenalogic.com/post/2009/01/08/WPF-Webcam-Control-part-2.aspx
http://easywebcam.codeplex.com/
I'm trying to create my own Media Player application using a WPF MediaElement. I know that the MediaElement actually uses Windows Media Player as its source and that's why it also loads the .srt (subtitle) file and shows subtitles below the video.
My application is actually supposed to override default subtitle rendering and show its own version of subtitles, so I need the MediaElement to ignore loading and displaying the .srt file.
How do I do this through WPF?
Thought I answer it for other people.
Loading subtitles may be related to the CODEC that's being used. Modifying the configuration of the CODEC through the configuration app it was provided with must solve the problem.
Can i do the following in a silverlight page/app? (Note: the silverlight app will be embedded on an ASP.NET MVC website page) :-
Display an image from a resource: eg. www.someDomain.com/image.png
Url of the image to display is passed into the control (ie. it's not hardcoded, but .. say .. entered into a textbox via the user, on the page).
Resize the image.
Add layers to the image. A layer could be .. i donno .. some basic text or another image or icon
change the font or font-size of a layer font.
'Save' the modified image to another url, via an HTTP-POST. So if i've resized the image or added some text-layers these are all rendered into a single bitmap (png/jpg/whatever) which is then POST'ed to a url as binary. (ie. multipart/form-data)
Note:
I've asked this question before but that was for Flash (flv/swf). I'm now interested if this can be done in silverlight.
Updated Question
Also, what software is required to create these silverlight apps? VS2008? Expression blend? I know u can use notepad .. but i'm so new to this I would need some WYSIWYG app, I expect.
The Writable Bitmap API Silverlight 3 sounds pretty much what you're after. You can use the standard Silverlight controls such as TextBlock and Image to lay the image and layers out and then use the API to take a "screenshot" of that layout to upload to a server.
Hope this helps.
Yes it can, but it has similar crossdomain restriction as flash. You'll need a crossdomain.xml or clientaccesspolicy.xml in place on the remote servers to allow silverlight to communicate with them. There is an ms article here which gives some more information on the restrictions on using silverlight to talk to other servers.
Once you have the image then you can manipulate it on the client side using the normal .net libraries for such purposes.
So you might load it with
Bitmap bitmap = new Bitmap(<some stream>);
Graphics g = Graphics.FromImage(bitmap);
and then you can play with it in any way you wish.
g.DrawString("Silverlight image",
new Font("times", 32),
SystemBrushes.WindowText, 0, 0);