I am new in Eclipse 4(RCP) and I want to create an application in that any custom component can be defined and these components can be dragged and dropped between parts/views. (Like Scene Builder but it must run into e4)
How can it be possible? And which framework can supply my needs?
I look into JavaFX and GEF a little. But I could't make decision to use what.
The DND (Drag and Drop) in SWT provides several useful abstractions.
I think you'll need to get familiar with DragSource, DropTarget and Transfer object.
Please take a look at this article:
https://www.eclipse.org/articles/Article-SWT-DND/DND-in-SWT.html
Someone already posted a question like this in Eclipse Forums:
https://www.eclipse.org/forums/index.php/t/461505/
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We need a tree view with File system and check boxes in QT. Is there any way to achieve that?
The tree we need would look something like below:
UPDATE:
I am able to achieve it with subclass of QFileSystemModel. Still have few challenges, but at least subclass is working. Below is the code if anyone needs it. Below is the link to the code -
https://drive.google.com/file/d/1qViZ3iEW2pV2th0jQhzneDL14SEhIgS0/view?usp=sharing
The pending work is to apply a wait cursor (or make treeview uneditable when the check/uncheck is taking place).
PS: It will take a lot of time if root node is checked.
Well, all of that can be achieved with minimal customizations of built-in classes, actually those checkboxes is almost the only thing that has to be done yourself.
QFileSystemModel already provides a proper model for displaying the current filesystem contents, it can be subclassed
As for QML, the best demo is already provided by Qt, check the File System Browser Example. This example uses some deprecaded Qt functionality, but still it shows the basic concept.
The modern techniqes can be also found in the answers to the following question: Qt File Browser based on QML
Hopefully, all that helps you, good luck!
**I have a "LWJGL Project" ** and I want to make some buttons by JavaFx scene in this project or put LWJGL in JavaFx scene .. but I can't understand how to do that.. any one have idea ?
Take a look at https://github.com/AlmasB/FXGL which is an open source framework to do exactly what you want for 2D type GL renders mixed with JavaFX.
JMonkeyEngine has been adding features and examples that have JavaFX 2D HUDs and GUIs over their 3D displays, so you may want to look at those.
Otherwise if you need to write it yourself, a quick way is to use SwingNode: place the LWJGL component in a SwingNode and then the SwingNode into the JavaFX layout. Be advised that you will have two separate rendering systems (JavaFX and Swing->OpenGL). Its really not hard but you'll need to code up any communications or event handlers that must "cross the divide".
I have found a really neat custom widget for Qt and managed to incorporate it into Qt Designer. I would now like to create a customer widget in designer by placing 32 of these LEDs into a new widget in Designer, then add some functions to it such as giving it address and passing data into it that will then illuminate patterns in colours according to the passed data.
My questions are:
Can I do this? I have placed 32 LEDs on to a new QFrame widget in designer and named the LEDs 0-31, but am at a loss as to know what to do next.
Is there a tutorial anywhere for this? I have found loads of hits on google for creating custom widgets for designer, but not using designer.
Please bear in mind I am not a good Qt programmer, I write embedded code for micros in C and am really not good at object orientated code; I can just hack together relatively simple programs for test and measurement. I need something that will hand hold me through this.
http://doc.qt.io/qt-5/qtdesigner-worldtimeclockplugin-example.html
This seemed to be the kind of thing I wanted, it seemed to look like someone has placed widgets on a screen to create a new widget, but it seems to keep referring back to Creator.
Maybe I am trying to do something impossible. Maybe I have to place this new LED in creator with code?
Many thanks for any pointers.
Yes, it is. A Designer plugin basically consists of 2 Parts:
The Widget that you want to add to the designer
The plugin itself that provides information about the widget usw.
You can simply create the widget with the designer, add the QDESIGNER_WIDGET_EXPORT macro and thats it. Create your designer plugin to load this widget and it should work.
Note: Since you mentioned your not very experienced, you should try to follow the Custom Widget Plugin Example. Once you understood that one, it's only a small step to your designed plugin.
Actually I am trying to structure my project in a clean MVVMV way. Unfortunately to this restriction I need to find a way to set pins to the map without the power DataBinding. One workaround could be to have the View in my ViewModel and set it directly.
Right now I don't have any chance to get the registered view. Does it make sense to extend the XLabs.Forms.Mvvm.ViewFactory?
Before adding a new issue on GitHub, my hope is that there is a better solution to handle such restrictions. I always used MVVM in my (small) WPF projects.
No that doesn't make sense. Your best approach would be to extend the Maps class to make Pins an ObserverableCollection that is bindable.
The new documentation format on the Xamarin site is rather difficult to read and does not provide the information you require at hand like it used to but I believe the Pins object is not bindable.
Take a look at the Xamarin Forms Labs Github project to get an idea of how this can be done. The approach is defined particularly well in the ExtendedPicker classes (here the items are bound to an ObservableCollection).
I am very new to Flex (started learning a couple of days back), I now have some understanding on how to create user interfaces with Flex and how to do MVC with Cairngorm and I really started liking it. But I am still lost with changing views using Cairngorm or entirely in Flex. Being a Java/J2EE developer for more than 10 years, it helps me understanding new technologies comparing it with Java. Typically in java world or in any MVC framework, the controller once got the updated modal it redirects or sets the new view to the user. Lets say once I added a new movie to movie database, I want to show the user a view Movie screen and when he deletes a movie I want to take user to list of all movies. The example which I have seen so far(including the diagram explorer) are just changing the modal values and the data is updating in the same view (using [Bindable]), but my question is how to change the view depending on the result or if it's a fault I want to take user to a different screen. How to do that in flex and in Cairngorm. Are there any best practices available and somebody please point me to right direction/resource. Thanks in advance.
The usual way to do this with Cairngorm is to put the data about the state of the application (eg. the screen the user is on) in the model too. You can, for example, use the ViewStack as the main container of the different parts of your application and bind it's selectedIndex to a variable in the model which will be used to control the screen that is displayed to the user. Putting it shortly - the state of the application is a reflection of the model.
You may also want to take a look at the Mate framework. We recently switched to Mate after using Cairngorm because we found it was a much easier framework to use and understand.
For your example, you would have a faultHandler event listener that would call whatever method you wanted in your model. You could easily use that to show or hide whatever you needed to.