The window manager supplies a set of routines which allow you to easily create, move, resize, and otherwise manipulate any number of windows. It also provides lower-level support by managing the layering of windows on the display and by alerting your application to display changes that affect its windows.
Touch screen support for analog touch panels is available. This includes a low level driver,which handles the analog input (from an 8 bit or better AD-converter), debouncing and calibration of the touch screen. The window manager deals with touch messages and widgets such as button objects. It takes no more than one line of code to create a button or another widget, which then automatically handles touch messages and reacts accordingly. * For window objects such as the button widget, emWin offers touch-screen and mouse support.
Memory device contexts allow creation of a section to output to the display in the memory of the CPU. All drawing operations can be used. When the image has been build completely, it is transferred to the display in a single operation, allowing flicker free updates even with slow CPUs or slow displays.
VNC stands for "Virtual Network Computing". It is, in essence, a client server system based on a simple display protocol which allows the user to view a computing ´desktop´ environment not only on the machine where it is running, but from anywhere on the Internet and from a wide variety of machine architectures. Client and server communicate via TCP/IP. emWin VNC support is available as a separate package.
More and more graphic controller manufacturer (Fujitsu/Toshiba) offer a flexible layer concept. The multiple layer/multiple display feature allows you to access more than one layer.
Antialiasing is the smoothing of lines and curves. It reduces the jagged, stair-step appearance of any line that is not exactly horizontal or vertical. emWin supports dif- ferent antialiasing qualities, antialiased fonts and high-resolution coordinates. It is an optional package.
A simulation environment under MSVC++ is available. It can be used to write and test the entire user-interface on the PC (all routines are 100% identical to your embedded application, no matter what CPU or LCD you are using).
The touch screen simulation is integrated into the regular emWin simulation. Mouse events are used to simulate the touch screen. The simulation can be used to write the user interface of your application and can be send as a simple exe file to anybody for discussion, demonstration or verification.
Drivers can be written for all types of LCDs, including monochrome, gray scale passive and active color(TFT) displays. LCD drivers for all common LCDs already exist.
List of supported display controllers
emWin features an integrated, very efficient color management system. This system allows conversion of logical colors (RGB format) into the physical colors which your LCD can display at run time. This way your application does not really need to be concerned to much with the available colors, LCDs can easily be interchanged. For optimized applications, the system can also display bitmaps using indices generated at (pre-)compile time by the application programmer or by the bitmap converter.
emWin has been designed to have a memory footprint as small as possible. Various configuration switches allow tailoring the software to perfectly match your needs, reducing memory consumption to a minimum. The memory requirements vary depending on which parts of the software are used and how efficient your target compiler is. It is therefore not possible to specify precise values, but the following applies to typical systems:Small systems (no window manager)
emWin has been redesigned from scratch. It consists of 4 layers, which can be used individually:
Layer 4: Window manager
Layer 3: Widget library
Layer 2: Graphic library
Layer 1: LCD Driver(s)
|SEGGER Microcontroller||embOS (Real Time Operating System)||1.xx.xx|
|SEGGER Microcontroller||emUSB (Embedded USB Stack)||9.xx.xx|
|SEGGER Microcontroller||emFile (Embedded File System)||2.xx.xx|
|SEGGER Microcontroller||embOS/IP (TCP/IP Stack)||7.xx.xx|