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<title>Greg Haerr's Microwindows and NanoGUI Page</title>
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</head>
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<body BGCOLOR="#ffffff">
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<table border="0" cellpadding="4" cellspacing="10">
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<tr>
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<td valign="top"><img border="0" src="file:///C:/My%20Documents/My%20Webs/myweb2/images/cat.gif" width="85" height="41"> </td>
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<td><h1 align="center">Microwindows and NanoGUI Projects</h1>
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</td>
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</tr>
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<tr>
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<td valign="top"><!--left-column contents --> <p><b>Downloads</b> <br>
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<a href="ftp://microwindows.censoft.com/pub/microwindows/">Microwindows</a> <br>
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<a href="ftp://microwindows.censoft.com/pub/microwindows/ScreenShots">Screen Shots</a>
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<br>
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<a href="ftp://microwindows.censoft.com/pub/microwindows/LinuxExamples">Linux Binaries</a>
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<br>
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<a href="ftp://microwindows.censoft.com/pub/microwindows/ElksExamples">ELKS Binaries</a>
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<br>
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<a href="ftp://microwindows.censoft.com/pub/microwindows/DosExamples">MSDOS Binaries</a>
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</p>
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<p><b>Docs</b> <br>
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<a href="faq.html">FAQ</a> <br>
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<a href="microwindows_architecture.html">Architecture</a> </p>
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<p><b>Links</b> <br>
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<a href="http://www.linuxhacker.org/nanogui/">NanoGUI</a> <br>
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<a href="http://www.linuxce.org/">Linux CE</a> <br>
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<a href="http://www.elks.ecs.soton.ac.uk/">ELKS</a> <br>
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<a href="http://ltc.com/linux-mips">Brad's Linux MIPS Pages</a> <!--end left-column contents --> <br>
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<a href="http://members.xoom.com/rosimildo/rtems_gui.html">RTEMS Port</a></td>
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<td><!--main contents --> <h3>Welcome</h3>
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<p>Microwindows is an Open Source project aimed at bringing the features of modern
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graphical windowing environments to smaller devices and platforms. Microwindows
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allows applications to be built and tested on the Linux desktop, as well as cross-compiled
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for the target device. Microwindows' genesis was with the NanoGUI project, and has
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now been combined into a single distribution. The Win32 API implementation is known
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as Microwindows, and the Xlib-like API implementation is known as Nano-X. Please read the <a href="faq.html">FAQ</a> for more information. An extensive <a href="microwindows_architecture.html">Architecture</a> document is also available.
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To get involved, please join <a href="http://www.linuxhacker.org/nanogui/">the NanoGUI
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mailing list.</a></p>
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<h3>News</h3>
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<h3>Version 0.87pre2 release</h3>
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<p>December 14, 1999<br>
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The second prerelease for version 0.87 has just been released, and is
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available for download at:<br>
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<a href="ftp://microwindows.censoft.com/pub/microwindows/microwindows-0.87pre2.tar.gz">ftp://microwindows.censoft.com/pub/microwindows/microwindows-0.87pre2.tar.gz</a>
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This release is primarily intended for inspection and testing of the
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changes before the directory tree reorganization, planned next.<br>
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The major enhancements include:</p>
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<ul>
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<li>Portrait mode driver for framebuffer systems. This is a big
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win for handhelds and palmtops, many of which require portrait mode
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for normal operation. All graphics output, including mouse
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movement, hotspots, and text output, are rotated and displayed in
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portrait mode. In addition, your Microwindows applications can
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be viewed in portrait mode on the desktop. Try moving the mouse
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without holding your head sideways!</li>
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<li>The RTEMS operating system port source has been integrated with the
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main tree.</li>
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<li>Fixes to allow Microwindows to be run on big-endian machines are now
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included.</li>
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<li>Various bug fixes including the Microwindows terminal emulator pty
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fix for X11, and Nano-X GrMovewindow fixes for child windows.
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There are still some issues relating to Nano-X clipping during window
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movement.</li>
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</ul>
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<h3>RTEMS Port</h3>
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<p>December 3, 1999<br>
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There's been alot of interest and development with Microwindows lately. Rosimildo
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daSilva has ported Microwindows 0.86 to the RTEMS operating system, available at <a href="http://members.xoom.com/rosimildo/rtems_gui.htm">http://members.xoom.com/rosimildo/rtems_gui.htm</a>.
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<a href="http://www.oarcorp.com/">RTEMS</a> is a POSIX-threads compliant real time
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multitasking operating system which runs on Intel, Motorola, Hitachi, Mips, and many other
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CPUs.</p>
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<h3>Version 0.87pre1 release</h3>
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<p>December 2, 1999<br>
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I have prepared an interim release of Microwindows and Nano-X enhancements, which
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completes many things folks have asked for, version 0.87pre1. This is available for
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download at <a href="ftp://microwindows.censoft.com/pub/microwindows/microwindows-0.87pre1.tar.gz">ftp://microwindows.censoft.com/pub/microwindows/microwindows-0.87pre1.tar.gz</a>
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<br>
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The major enhancements include:<ul>
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<li>Support for running under X11. Microwindows and Nano-X can now run as a user-defined
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(default 640x480) window under X Windows. The graphics output and look and feel are
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identical to framebuffer, but will run on any X display server.</li>
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</ul>
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<ul>
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<li>Compile-time options allow configuration to emulate any of the Microwindows truecolor or
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palette modes, in any pixel depth, including grayscale. This allows a Microwindows or
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Nano-X application to be emulated exactly, regardless of the host's or target's
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framebuffer characteristics. Thanks to Tony Rogvall for the X11 driver.<br>
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</li>
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<li>The client/server network code has been completely rewritten for speed!!!
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I studied the
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X11 Xlib implementation and came up with a similar implementation. By queuing all client
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data until an event or reply is required, Nano-X now runs at extremely high speed.
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For benchmarking, use the world demo, which plots several thousand
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points. This demo now runs extremely quickly. Unlike
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the Xlib implementation, Nano-X still runs synchronously per client, meaning that once a
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client request packet is sent, the server waits until the whole packet has arrived until
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servicing another client. This keeps the server code immensely simpler, while still
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running very quickly. I urge interested folks to check out the implementation, in
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mwin/src/nanox/nxproto.{ch}, and mwin/src/nanox/client.c.<br>
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</li>
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<li>Routines were added to allow Nano-X to be used as a "passive library", meaning
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that an application with it's own main loop can now call into Nano-X occasionally
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(after a
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select returns a file descriptor that Nano-X is interested in), and it will all work. This
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was done for Morten. See mwin/src/nanox/client.c, functions GrPrepareSelect(),
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GrServiceSelect(), GrMainLoop(). <br>
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</li>
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<li>Routines were added to get the system palette, and translate an RGB color to a PIXELVAL
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palette index. This was for Richard and the Opera browser. See mwin/src/nanox/srvfunc.c,
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functions GrGetSystemPalette, GrFindColor(). <br>
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</li>
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<li>A null mouse driver was added for systems without a mouse, by setting NOMOUSE=1 in
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Makefile.<br>
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<br>
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This is released as 0.87pre1 because I still haven't finished the directory tree
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reorganization, and adding Martin's cool X11 graphics makefile configuration tool. The
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client/server code rewrite took alot more time than expected. I am also working on getting
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all source on CVS. </li>
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</ul>
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<h3>NanoGUI combined with Microwindows</h3>
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<p>November 13, 1999<br>
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Alex Holden, the originator of the NanoGUI project, officially handed over his role to
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Greg Haerr, so that the NanoGUI and Microwindows projects can officially be available as a
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single distribution. Alex continues to host the Microwindows/NanoGUI mailing list.
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Although the releases have been maintained for some time by Greg Haerr, the
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official distribution site is now moved here. A big thanks goes to Alex for thinking
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up the NanoGUI idea and hosting the initial web site.</p>
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<h3>Opera Web Browser ported to Microwindows</h3>
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<p>November 11, 1999<br>
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<a href="http://www.opera.com">The Opera Web Browser</a>, a browser known for it's small
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footprint and operation on different operating systems, including Windows, BeOS, Linux,
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Solaris, MacOS and OS/2, has announced they have completed initial work porting Opera to
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Microwindows. This is a crticial milestone for Microwindows, since it shows that
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larger, graphics intensive applications can run on top of the Microwindows graphics
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engine. The Opera port uses the Nano-X api and features jpeg and gif image support,
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as well as transparent image drawing. The codefile size is 670k. The current
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Microwindows footprint is less than 100k with no compiled-in images.</p>
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<h3>Version 0.86 release</h3>
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<p>October 28, 1999<br>
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Thanks to Brad LaRonde for helping me get this web page out. I have posted an update
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v0.86 to Microwindows/Nano-X at: </p>
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<blockquote>
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<a href="ftp://microwindows.censoft.com/pub/microwindows/microwindows-0.86.tar.gz"><p>ftp://microwindows.censoft.com/pub/microwindows/microwindows-0.86.tar.gz</a>
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</p>
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</blockquote>
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<p>This version completes a major effort, that of implementing off-screen drawing, as well
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as screen-to-screen blitting. The screen driver interface had to change to accommodate
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this, and I had to rewrite all the screen drivers. In addition, the blitting routines were
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written for 1, 2, 4, 8, 16 and 32bpp linear framebuffer devices, as well as the 16 color 4
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planes vga (this was a royal pain...) The blitting uses a clipping region traversal
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algorithm so that blitting is always high speed, even when the destination window is
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partly obscured. </p>
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<p>This release also auto-detects most Linux framebuffer implementations, and should have
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a compiled in driver for it. </p>
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<p>The standard Microwindows demo is now a graphical terminal emulator, mterm. (No, it
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doesn't run vi yet, and it doesn't repaint it's screen contents, but it will ;-) This demo
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requires screen-to-screen blitting for scrolling. The 3d graphics demo now uses offscreen
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blitting to enhance (read no flicker) the display. Check it out. </p>
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<p>There is also some experimental full-blown region handling code included, which uses
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X11's y-x banding region algorithms. (This stuff is truly for those with extra time and
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brains). It is currently not compiled in, but can be included by replacing devclip.c with
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devclip2.c. In the next release, arbitrary multi-rectangle clipping regions will be
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available. I also plan on implementing separate clip regions from update regions for
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windows, with the system computing the update region as a subset of the clip region.
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Anyway, this sophisticated region handling is required for smart window painting as well
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as higher end graphics primitives. Eventually, this will also allow separate source and
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destination clipping for bitblit operations. Only destination clipping is working now. </p>
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<p>The next release will have a reorganized directory structure, allowing separate
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development of Nano-X, widgets, core engine, and Microwindows. I plan on moving the whole
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thing to a CVS soon. BTW, Microwindows now supports three processor families, according to
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reports emailed me. We've got i386, 8086, MIPS Vr41xx, and ARM families running ;-) </p>
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<p>Following is a summary of the ChangeLog: <br>
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Version 0.86 - 28th October 1999 - greg@censoft.com <ul>
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<li>merged framebuffer, elks and msdos vga 16 color 4 planes drivers </li>
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<li>wrote vga bitbit routines (a herculean effort) </li>
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<li>optimized bitblit by traversing window clip region </li>
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<li>added experimental multi-rectangle dynamically allocated regions </li>
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<li>wrote scrolling terminal emulator demo for microwindows </li>
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<li>added WM_FDINPUT msg, WndRegisterFdInput call for terminal emulator </li>
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<li>changed SCREENINFO struct, removed black/white, added bpp, planes </li>
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<li>added offscreen (memory DC) drawing to microwindows </li>
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<li>added BitBlt, CreateCompatibleBitmap, CreateCompatibleDC, DeleteDC </li>
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<li>retired BOGL library, must use new interface for blitting </li>
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<li>converted framebuffer, svgalib, elks and msdos screen drivers (we need blit routines for
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herc and svgalib still) </li>
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<li>major screen driver interface change, old drivers not compatible </li>
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</ul>
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<p>Page maintained by Greg Haerr <<a href="mailto:greg@censoft.com">greg@censoft.com</a>></td>
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<tr>
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<td valign="top"></td>
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<td></td>
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</table>
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</body>
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</html>
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