Am customizing Anywhere (7.6), Can we draw free sketch and upload as a picture, Also can we convert any image into PDF using Anywhere ???
You can extend Anywhere to add your own (or other third party) custom javascript libraries. Anywhere 7.6 has a jSignature plugin to capture signatures that you can reuse in your pages to perform your own sketch capture with javascript code. Take a look at the platform/signature/handler/SignatureHandler code for an example.
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I need to implement a specific text object in QEdit PyQt. I need rich objects that will content special information, capture the keyboard arrow keys only when cursor text is on these objects. They need support selection and copy / paste operations also. Outside of them, the cursor must act as normal behavior. At this time, the object does not need to show images or svg etc. Is only for capture text cursor purposes and to store specific information related with the object.
I read that I can implement a customized text object with this example:
textobject.py
but the example does not contain information about implement new html tags, how to capture focus, etc.
My questions are:
How can I add a new html tag related with my custom object for loading and saving documents?
How can I detect when text cursor is on the custom object to modify keyboard cursor behavior?
PyQt documentation says:
"Copy and Paste operations ignore custom text objects."
So is no way to implement copy / paste functionality?
How can I access to my custom object content?
I want to have specifics methods to navigate within the information contained in the object. I could save this information in another object, but I need to synchronize the information with the cursor because a document can contain many of these objects.
Context for my application: I'm developping a very specific application for blind users. I am blind myself. I need to make very specifics customizations to the Richttext area for accessibility. The goal is to develop an accessible math equation editor. For this, I need to add support for mathMl tag. I will process mathMl content inside these tags in my custom object, this part is already implemented at basic level without using any GUI framework. At this time I don't need to show the equation in the screen, I let to screen readers interact with my editor via a COM object. At this time, the equation box is functional, but I need to integrate this functionality in a rich text area. the idea is, a document can contain N math expressions that can be read, modified and saved in a document.
I plan to implement accessibility for sighted people also in the equation editor, but it is beyond my skills and is not a priority right now.
Also I need to accessibilize tables in rich text area, currently tables are not accesible in QT. Then I think to extend qt table functionality. Style elements like headings etc, does not exist in pyQt. OK, you can write a paragraph with heading style, but screen readers can't detect it. So I need to develop this functionality. I could solve it with customized objects I think.
Currently it need to work in windows only. Maybe later I'll consider other platforms.
I started to program in pyQt yesterday, but I already read a lot of documentation. I wrote a basic rich text editor to test my requirements.
I already tried to implement this application with wxPython phoenix because I've been using WX for a long time. But I couldn't implement custom text objects and I didn't find documentation about it.
If pyQt is limited for my requirements, could you recoment another gui framework?
Y could consider another languages, I chose Python because Python has many math tools like sympy or numpy, and implement user scripting functionality in the app is very easy.
Sorry for my bad english.
I have never done a Qt video application - newbie in this area. I have a custom video file format to render using Qt. The video file format is 256-byte header, then pixel data, then 256-byte header, then pixel data and so on.
The header consist info like width, height in pixels, bytes per pixels, frame rate etc and the pixel data is in Bayer (GBRG). I may have to process data before display - like convert to RGB (not sure yet). I see there are lot of video related classes like QGL*, QMovie, QVideo* ... don't know where to start ? I have seen mandelbrotwidget example which looks like a good place to start but still need some advice. Also, do I have to write a Qt Image plugin for Bayer pattern?
Thank you.
Good advice is to do all by yourself. If you have simple data structure read it by simple C++-code.
Conversation from Bayer RGB to RGB like here you can also make without using any Qt objects.
And now, when you'll got trivial RGB-image (even in your own structure) per frame, you can show it on widgets such as QGL* -- if you prefer OpenGL rendering, or Qt's classes such as QPainter, QImage...
Some more links: C++ GUI Programming with Qt4, 2nd Edition, Graphics View Framework
The best place to start is by learning the basics of custom drawing in Qt. In short, a very simple implementation would require you to:
Create a custom QWidget subclass
Override the paintEvent() method
Use a QPainter/QImage to decode your raw video data into image data and draw it on screen
Qt has lots of good sample code to get you started, such as:
http://qt-project.org/doc/qt-4.8/examples-painting.html
Once you have a simple implementation up and running, and a basic grasp of Qt concepts/classes, then you'll be ready to profile, optimize, and make use of more advanced Qt functionality (GL, video) as needed.
I would like to make an input method which is used only for Qt desktop application.
It like Chinese(Pinyin) input method in windows. Include script processing, rendering of words.
As it includes rendering of words, it can't be created with Keyboard Layout.
More over, when built-in with application, it can be use cross over other platform.
But, It not like on-screen keyboard.
Thanks for all
The Qt way to implement this is to provide an input method plugin, see general plugin development docs and the input method specific base class.
With this you should be able to implement your own input method. Stuff like script processing and rendering is then up to your own plugin.
When the user uploads a video (only divx/avi/mkv allowed) I'd like to get a thumbnail for the video so that is can be displayed in the divx player before play is clicked. Is there any way to do this is ASP.net or javascript.
The easiest way to do this would be to use something like FFMpeg, though it's a command line application and you'd probably need to write some kind of wrapper around it. For more information on the exact parameters you might need to use, check out Creating video thumbnails using ffmpeg.
There are some other options, such as Flash Video MX SDK, but they tend to be COM solutions rather than managed code and are generally quite clunky to implement. They can also be quite expensive, which may make them unfeasible.
You can use ffmpeg to create your thumbnails.
Checkout this blog post : link
In .net you can create Process and pass arguments to execute the tool from your code.
I'm looking at ways to embed PDF viewing in a Flex application.
Currently the only option I've seen is by using the flash.html.HTMLLoader class, which only works if you're using AIR. This isn't a big deal -- I'm willing to use AIR if I have to -- but based on my experimentation with viewing a PDF this way it appears that AIR simply integrates the embedded Adobe PDF browser Plug-in for viewing, which not only shows the PDF page(s), but provides all of the manipulation controls as well (zooming, printing, etc.) which I don't want to see.
I'm looking for something that works somewhat along the lines of the JPedal library for Java -- an embedded component that simply renders the PDF alone.
Has anyone found a way to do this with either AIR's built-in component or via some other method?
There are a couple of ways, but neither actually have the PDF in the Flex App:
Convert the PDF to SWF. Use this tool or one like it to convert the file over.
Use HTMLComponent, a method that uses an iframe over your flash/flex to make it appear like an external page is in your app. There are a few downsides to this method however - most of them described in detail at Deitte.com.
What you want is possible with AIR and described in this Adobe article:
http://www.adobe.com/devnet/air/flex/quickstart/scripting_pdf.html
Take a look at http://www.adobe.com/devnet/flex/quickstart/embedding_assets/ and see if it helps.
I don't think you can embed PDF files directly (but I'm not really sure) but if you totally need to do it and you don't want to open a new window you could convert the PDF to another format that can be inserted in your app.
If your goal is to simply display the PDF in the Flex environment then you could use the IFrame approach. You can find an example here http://www.deitte.com/archives/2006/08/finally_updated.htm
By using this approach you can load any HTML content which includes PDF's.
Take a look.
Okay guys here is the exact one we're looking
http://subinsugunan.blogspot.com/2009/06/embed-pdf-in-flex-application.html