I need to implementation VIPS algorithm based on gtk webkit,but i can't find any doucumentation about how to use gtk webkit.Does anyone know of a simple "Hello World" example for using gtk Webkit library?And i want to get the color and location of every tag in the html file,can webkit satisfy my requirement？
Apologize for my poor english！
Some research papers mention using CSSBox for implementing the page segmentation. It provides all the functionality you require but it is implemented in Java.
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I came across docToolChain (http://doctoolchain.org/) for generating Docs. Wanted to know if this can support other programming languages such as Python, Go etc? Or will it only support Java?
yes, it does - depending on your needs :-)
When we incremented the version of docToolchain from 1.x to 2.0, the biggest feature was that the technology is now hidden behind a wrapper.
You still need java installed (v8-v14), but you don't have any code any more in your repository.
But regarding Python - it is quite likely that you want to use restructuredText as your markup language.
Until now, docToolchain focussed on AsciiDoc (based on ruby) as the markup language for your projects documentation.
There is now a feature coming up: jBake, the static site generator used by docToolchain is already able to render markdown.
But there is now also a PoC which shows that it can also render restructuredText with a little help of a small python script:
http://doctoolchain.org/multi-markup-demo/demo/asciidoc.html
PS: I am the maintainer of docToolchain, so my answer might be biased
I'm a beginner in dojo. First of all is everything javascript based? For example to create a form I have to use JavaScript or HTML tags?
Also I cannot understand their documentation and tutorials. It's very confusing.
Is there a proper website (other then dojo itself) that has good tutorials?
You can use Dojo's components's (widgets) in two ways. Programmatic and declaritive. The programmatic way (what you are talking about) is by defining widgets through the use of javascript. With declaritive you can define them using HTML markup. David Walsh has a nice short writeup and if you search for "declaritive programmatic dojo" you'll find some questions and answers on the matter:
https://davidwalsh.name/dojo-widget
Difference between programmatically vs declaratively created widgets in dojo?
Declarative coding or programmatic coding in Dojo Projects?
Declarative or programatic approach in DOJO?
If you're having trouble with the tutorials on the Dojo website, i suspect you're better off, first diving into some basic beginner javascript tutorials before trying to learn a framework like Dojo. I concur with the comment Ferry made on your question, there are no better resources than the actual Dojo website. I recommend following every tutorial, starting with the Hello Dojo tutorial and working your way up so that you don't miss out on the basic concepts which you'll need when you read the harder tutorials. Good luck!
For your first question: dojo is javascript-based platform that provide you with a basic javascript library and a bunch of basic widgets (UI controls like button, dialogue, layouts,...), and some extra things. However, you don't really have to use dojo all the time: you still can use dojo to manipulate a html form button; it's just dojo button comes with extra functionalities and might save you some time.
For the second question, I agree with iH8 that dojo website is the best place to start. There are three different ways dojo websites can help you:
Look at the tutorial: Basic steps on how to set it up and use provided functionalities as-is
Look at thetoolkit api: This provides a very detailed view of dojo javascript object (See what extra things you can do with dojo objects)
Look at the nightlytest: I found this very helpful in term of showing me what can be done outside of the tutorial (i.e. how to use things you found in the api)
Other than these, you can look at existing implementation to learn about the toolkit.
Basically, this is how I am learning Dojo. Without more-specific questions, it's hard to tell what is confusing about the tutorial. I would recommend you give it a try and post a question: everyone here will be willing to help you.
I recommend starting with some video tutorial like this.
When you understand the concept, you can try to copy and paste some code from Dojo documentation tutorials or Reference Guide, because all books are out-of-date.
Also you may find some useful information on IBM-related sites like http://www.ibm.com/developerworks because IBM invested in Dojo and uses it for its products.
If you have enough resources ($) you can take participation in Workshops (sitepen.com/workshops)
I am building a script creator for this. I'm using OGRE for the 3D bit, but to build a building I'll need something in 2D that can draw stuff depending on where you click (a bit like this). I don't care what platform it's on (as long as it's Windows).
Thanks in advance!
There some choices:
Vigra
AGG
Olena
Cairo
Skia
Any one is satisfied what you need. I prefer Skia.
QT focus on UI, nothing relevance to 2D rendering.
If you need a simple cross-platform low-level rendering engine, you could use the Simple DirectMedia Layer (libsdl.org).
For more higher-level programming I prefer Qt. Qt is a complete Framework for many purposes. You can make custom rendering stuff with the qgraphicsview/qgraphicsscene classes.
If you are a beginner, you should use libsdl, because it is easier to learn.
I've been thinking to give GUI development a try lately and am torn with the choice of between wxPython and Mono.
Judging from what I've seen out there, wxPython people seem to use the WebKit trick to produce nice (doesn't have to be beautiful) UI.
How hard is it to do the following in each of the platform:
1) Custom Control
2) Use HTML rendering
I don't quite understand how far the HTML rendering works via WebKit in wxPython (i.e.: does it support separate CSS/JS files? how's the JS support? do we need to write extra wxPython code to run the JS? how hard it is to integrate between JS events and wxPython widgets? what are the usual strategy of integrating WebKit with wxPython?)
Mind to share your thought on this subject? I specifically pick either wxPython or Mono, not Java Swing for no reason.
PS: I'm aware of certain limitation of cross-platform UI (as in: it won't be 100% native) and I could care less of such things.
wxPython has wxWebkit available via the new WebView widget, but WebKit is only available on Mac and Linux right now. WebView uses a different rendering engine on Windows called Trident from IE (see http://wxpython.org/CHANGES.html). So you'll want to keep that in mind.
Either way, we're talking about browser engines that display HTML, CSS, etc. They should, theoretically, display whatever those engines support. You'll have to look up their specifications to be sure and also make sure to check if the port supports everything. As I understand it, they should definitely support the usual HTML and CSS and I would assume normal javascript. If I were you, I'd just create a simple window in wxPython and then load the web page you've created and see how it works.
I don't know how the javascript communicates with wxPython or if it even does. You'll want to ask on their mailing list for that kind of information.
There is a very cool sounding technique called Shape Context matching, which can be used in an Image Recognition application to match an "unknown image" against a known "image library." There are numerous descriptions of the concept documented on the web (mostly all variations of the same original paper), for example: http://www.eecs.berkeley.edu/Research/Projects/CS/vision/shape/sc_digits.html
I found a JAVA implementation and a MATLAB implementation of the algorithm described in the paper, but I cannot find an objective-c implementation. Anyone know if there is any objective-c code out there, anywhere, implementing these techniques? I sure would like to take advantage of it, rather than trying to write that stuff myself!
Here you can find an interesting c++ implementation (for non-commercial usage, didn't check it yet.. see the downloads):
http://www.umiacs.umd.edu/~zhengyf/PointMatching.htm
I'm currently searching for a Java implementation of the algorithm. Could you please provide a link to the implementation you found?
The original matlab code can be downloaded at:
www.eecs.berkeley.edu/Research/Projects/CS/vision/shape/sc_digits.html
I also found a C# implementation:
http://www.pscode.com/vb/scripts/ShowCode.asp?txtCodeId=7465&lngWId=10
Take a look at OpenCV. It is implemented in C so it can be used in obj-c pretty easily.