Bind different input sources to these functions.
The CursorNavigation attached object implements the functions needed for controlling the cursor. to forward selection from container, set this button to have the focus/cursor by default OR alternatively, we may define an escape target item, that receives the focus when leaving this scopeĬursorNavigation.escapeTarget: homeButton escape command would by default return the focus to the parent of this scope (optionally) once the cursor enters the scope, limit the movement to this item's children enable cursor navigation for the container define a container with cursor manageable contents combine existing focus mechanisms and cursor management to have cursor scopes Set this to true to include the item for cursor navigation. After installing the plugin is available to any project using that version of Qt.
Run make install in the build directory to install the plugin to Qt's plugins directory. Build the plugin and the demo application by building the project CursorNavigation.pro. InstallingĬursorNavigation is distributed as a Qt QML plugin. This means that inputs are directed on the item that has the cursor and that the cursor movement can be refined using Qt's FocusScopes.īy default, CursorNavigation uses they keyboard as input, but it also provides an API for using any kind of input source for control. Moving the cursor is also moving the active focus between the items. There may be one instance of the CursorNavigation backend per window and one item per window having the cursor. The simpler 4-way navigation is well suited for traditional, rectangular and structured UIs, while the 360-algorithm allows moving freely to any direction. There are 2 algorithms for spatial navigation: 4-way and free-directional. Moving the cursor is handled by algorithms, and is based just on the location and geometry of the items. The framework's backend keeps track of the navigable items and their parent-child relations and position and geometry on the UI.
How does it work?ĬursorNavigation works by allowing the developer to define individual QML elements as navigable. CursorNavigation ships as a plugin for Qt and is loaded by simply importing it in QML, usable right from the beginning of the ui development. The program can also be downloaded on a smartphone or. qt's existing key navigation, where the navigation path has to be defined explicitly on a per element basis. Users can explore the globe by entering addresses and coordinates, or by using a keyboard or mouse. Minimal configuration, in this case, would be in comparison to eg. The purpose of the CursorNavigation plugin is to provide a generic way of enabling cursor navigation in QML UIs with minimal configuration and ease of use in mind. In this case, it's more specifically a selector for individual UI elements, such as buttons, and not completely freely moving, like a mouse pointer. In addition to containing the item, scene, and screen coordinates of the event (as pos(), scenePos(), and screenPos()), mouse events also contain the. I also made other tests, using QApplication and QDesktopWidget classes with no luck.This module, the plugin and the examples are all very much work in progress, so changes to the code, naming and API are to be expected! What is it for?Ĭursor is an indicator for the target of user interactions in a GUI.
I know that with libX11 it's possible, because I did it in the past, but I need to work with Qt 5, and I can't figure out how to do detect the selected screen with Qt. My idea, is to open/launch an application (executed by a Qt daemon that must detect the selected screen) to the screen where the mouse is. I don't know if that's a normal behavior or a bug, since the documentation doesn't say what happens when the screen argument isn't the screen where the mouse is. Since the both positions has the same values, I can't know at which screen is the cursor. But it's not the case, the both positions ( pos0 and pos1) has the exactly same value, as we can see on the output: screen0 DVI-D-0 What I was expecting, is that only one screen would return a valid position, since the cursor is only at one screen, not on both. QScreen *screen1 = QApplication::screens().at(1)
That's the code I used to make the test: QScreen *screen0 = QApplication::screens().at(0) I made some tests, and the results didn't work as I expected, so I decided to make a new post to talk about the test I made and to find an alternative solution. First of all, I'd like to mention that I found that related post How to get the mouse position on the screen in Qt? but it "just didn't work" for me.