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X11 for Mac OS X 1.0. An implementation of the X Window System that makes it possible to run X11-based applications in Mac OS X. Based on the open source XFree86 project — the most common implementation of X11 — X11 for Mac OS X is compatible, fast, and fully integrated with Mac OS X. It includes the full X11R6.6 technology. The MacPorts Project Official Homepage. The MacPorts Project is an open-source community initiative to design an easy-to-use system for compiling, installing, and upgrading either command-line, X11 or Aqua based open-source software on the Mac operating system.To that end we provide the command-line driven MacPorts software package under a 3-Clause BSD.

Chimera on Mac OS X using X windows

Chimera for Mac OS X is available in X windows and native Aqua versions.With Chimera 1.4, we now recommend the Aqua version because most ofproblemswith the current port of the Aqua Tk windowing toolkit have been resolved.

Contents

• Requirements

Requirements

Chimera runs on Mac OS X 10.4 (Tiger), 10.5 (Leopard), and 10.6 (Snow Leopard),but not on older versions of Mac OS X.

A X11 server must be installed for Chimera to start. For 10.4, we recommend Apple's X server (X11).It is reliable and provides hardware OpenGL acceleration. For 10.5 and 10.6, we recommend getting a newer version of the X11 serverfrom the XQuartz projectbecause the graphics support is much better(although XQuartz won't support Mac OS X 10.6 until version 2.4.1 comes out).

X11 comes with Mac OS X as an optional component(standard location /Applications/Utilities/X11).See the Mac OS X 10.4,Mac OS X 10.5,or Mac OS X 10.6 instructions below.

Installing X11 on Mac OS 10.4 (Tiger)

If you had X11 installed on OS X 10.3 and upgraded to 10.4,it should still be installed.If you bought a new Mac or did a fresh install of 10.4,X11 is not installed by default.To see if X11 is installed properly, try runningX11.app in /Applications/Utilities.If the application is missing or does not run, you will needto install it by the following procedure:

1. insert the 10.4 installation disc,
2. double-click onOptional Installs.mpkgat the top level,
3. get to the Installation Type step,
4. expand the Applications section,
5. select X11, and
6. click Install.

Clicking to activate windows

Two X11 preference settings help avoid extra mouse clicks whenusing Chimera dialogs.When you move the mouse from one Chimera window to another you canautomatically have the new window activated without requiring a mouseclick. Set this 'focus follows mouse' preference by typing the followingcommand in a Mac Terminal window:The default behavior of the Quartz window manager from the Apple X server1.0 release is to require you to click on each window before you cantype to it or press buttons. The wm_ffm setting only effects X applications,not Aqua applications, so it only has an effect when an X window currentlyis active and you move the mouse to another X window.

When you are using a native Mac application (not X windows)and then click on a menu within the Chimera window the mouse click doesnot bring up the menu. It just activates the Chimera window and anothermouse click is needed to show the menu. To make this work with a singlemouse click, use the Mac X server wm_click_through preferenceby typing the following command in a Mac Terminal window:Normally Mac OS X swallows window-activating mouse events. This preferencecauses a window-activating mouse click on an X window to also be processedby the application.

Enabling hardware stereo in a window

Otherwise known as sequential stereo, is a rapid flickeringbetween left-eye and right-eye views that produces a three-dimensional effectwhen viewed with special synchronized glasses.Sequential stereo in Chimera requires aworkstation-class graphics card and a graphics driver configured for stereo.To tell X11 to make stereo visuals available,type the following command in a Mac Terminal window:

X11 must be restarted after any of these settings are changed.The settings are saved in your ~/Library/Preferences directory, so they will apply to future sessions.Reissuing the commands with false instead of truewill restore the default preference settings.

Installing X11 on Mac OS X 10.5 (Leopard)

If you had X11 installed on OS X 10.4 and upgraded to 10.5,it should still be installed.If you bought a new Mac with 10.5,X11 is installed by default.If you did a fresh install of 10.5,X11 is not installed by default — you will needto install it by the following procedure:

1. insert the 10.5 installation disc,
2. go into the Optional Installs folder
3. double-click on Optional Installs.mpkg
4. get to the Installation Type step,
5. expand the Applications section,
6. select X11, and
7. finish the installation procedure
8. do a software update to get the latest version

If the X11 you install does not work properly,we recommend installing the XQuartz version.

Note that if you have a one-button mouse, the X11 provided with10.5 does not have three-button emulation on by default, which will make it impossible to translate and scale structures with the mouse.To turn on three-button emulation, do this:

1. click on the X11 icon (it should show up in the dock when you start Chimera)
2. open the X11 menu from the menubar at the top of the screen
3. choose the Preferences... entry
4. in the resulting dialog choose the Input tab
5. enable the Emulate three button mouse option

Clicking to activate windows

Two X11 preference settings help avoid extra mouse clicks whenusing Chimera dialogs.When you move the mouse from one Chimera window to another you canautomatically have the new window activated without requiring a mouseclick. Set this 'focus follows mouse' preference by typing the followingcommand in a Mac Terminal window:The default behavior of the Quartz window manager from the Apple X server1.0 release is to require you to click on each window before you cantype to it or press buttons. The wm_ffm setting only effects X applications,not Aqua applications, so it only has an effect when an X window currentlyis active and you move the mouse to another X window.

When you are using a native Mac application (not X windows)and then click on a menu within the Chimera window the mouse click doesnot bring up the menu. It just activates the Chimera window and anothermouse click is needed to show the menu. To make this work with a singlemouse click, use the Mac X server wm_click_through preferenceby typing the following command in a Mac Terminal window:Normally Mac OS X swallows window-activating mouse events. This preferencecauses a window-activating mouse click on an X window to also be processedby the application.

X11 must be restarted after any of these settings are changed.The settings are saved in your ~/Library/Preferences directory, so they will apply to future sessions.Reissuing the commands with false instead of truewill restore the default preference settings.

Exposé

If some of your mouse buttons activate Exposé functions,you will likely want to use the Exposé category of System Preferencesto make those buttons available for Chimera functions.

Installing X11 on Mac OS X 10.6 (Snow Leopard)

See the Mac OS X 10.5 instructions.

Automatically closing X11

Two X11 preference settings control the automatic closing of the X11 server.Turn it on by typing the following command in a Mac Terminal window:

And you control the timeout, in seconds,by typing the following command in a Mac Terminal window:

X11 must be restarted after any of these settings are changed.The settings are saved in your ~/Library/Preferences directory, so they will apply to future sessions.Reissuing the commands with false instead of truewill restore the default preference settings.

Possible Problems Downloading Chimera

If you experience difficulty downloading the distribution, try thislinkas a simple test to see if the size of the Chimera distributionis causing problems.The link should download a small Python program to your computer. The onlydifference between this and the Chimera distribution download is thesize of the file, so if the link works then something in your environmentis blocking the downloading of very large files.

If this test download does not work, then something in your environmentis blocking the download of any binary file (the download is sent usingthe http content type of 'application/octet-stream').

You can try downloading the Chimera distribution to a different computeror from a different network that you are sure does not make use of aproxy web server.

Installation

To install Chimera, open the disk image file you downloaded.This will put the Chimera application on your desktop.This may have happened automatically when you downloaded.

If more than one person will be using Chimera, the Applications folderis a good place to put it. Moving it to that folder requires administratorprivileges. If it is only for your use, putting it in your home Applicationsfolder or leaving it on the desktop are reasonable choices.

Removal

To remove Chimera, just drag it to the trash.

Starting Chimera

The usual method of starting Chimera is by double-clicking the icon.If you want to start it from the command-line(e.g., you want to run more than one chimera at a time),use the following executable:The DISPLAY environment variable must be set and the X servermust be running for Chimera to start.Starting Chimera (versions 1.2304 and newer) will automatically start the X server if it is not already running.

Known Problems with the X windows Version of Chimera

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