forked from Archive/PX4-Autopilot
52 lines
2.1 KiB
Plaintext
52 lines
2.1 KiB
Plaintext
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NXWidgets
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=========
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In order to better support NuttX based platforms, a special graphical user
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interface has been created called NXWidgets. NXWidgets is written in C++
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and integrates seamlessly with the NuttX NX graphics subsystem in order
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to provide graphic objects, or "widgets," in the NX Graphics Subsystem
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Some of the features of NXWidgets include:
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o Conservative C++
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NXWidgets is written entirely in C++ but using only selected <20>embedded
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friendly<6C> C++ constructs that are fully supported under NuttX. No
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additional C++ support libraries are required.
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o NX Integration
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NXWidgets integrate seamlessly with the NX graphics system. Think of the
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X server under Linux <20> the NX graphics system is like a tiny X server
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that provides windowing under NuttX. By adding NXWidgets, you can support
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graphics objects like buttons and text boxes in the NX windows and toolbars.
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o Small Footprint
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NXWidgets is tailored for use MCUs in embedded applications. It is ideally
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suited for mid- and upper-range of most MCU families. A complete NXWidgets
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is possible in as little as 40Kb of FLASH and maybe 4Kb of SRAM.
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o Output Devices
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NXWidgets will work on the high-end frame buffer devices as well as on LCDs
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connected via serial or parallel ports to a small MCU.
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o Input Devices
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NXWidgets will accept position and selection inputs from a mouse or a
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touchscreen. It will also support character input from a keyboard such as a
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USB keyboard. NXWidgets supports on very special widget called CKeypad that
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will provide keyboard input via an on-screen keypad that can be operated
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via mouse or touchscreen inputs.
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o Many Graphic Objects
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Some of the graphic objects supported by NXWidgets include labels, buttons,
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text boxes, button arrays, check boxes, cycle buttons, images, sliders,
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scrollable list boxes, progress bars, and more.
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Note: Many of the fundamental classed in NxWidgets derive from the Antony
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Dzeryn's "Woopsi" project: http://woopsi.org/ which also has a BSD style
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license. See the COPYING file for details.
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