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Gestalt Items |
Copyright © 2008, 2009 Arndt Roger Schneider
Gstripes adds considerable visual complexity to a Graphical User Interface; visual complexity costs performance.
The all important performance factor for Gstripes is the background complexity. Gradients in the background are expensive, while AQUA®-like stripes have a moderate performance impact. Using an empty background will almost achieve vanilla Tk performance. The amount of hijacked controls isn’t a factor at all, as long as the described mechanism is used. And no more than 100 items are displayed inside a single dialog at the same time.
Gstripes is designed for resolution independence, it supports font glyphs and vector graphics. Using vector graphics instead of bitmaps has a massive positive effect on performance. A fully vectorized Graphical User Interface, created with Gstripes, Goolbar and Galette might be twice as fast as a Graphical User Interface with even few bitmaps.
Example 6.41. nilstripes for High Performance
Add the following code to your Tcl-source or the XRDB resource file. Nilstripes creates a plain coloured background.
option add *stripes.stripesCommand nilstripes option add *Goolbar.stripesCommand nilstripes
...or inside the XRDB-resource file...
*stripes.stripesCommand: nilstripes *Goolbar.stripesCommand: nilstripes
In case, where »nilstripes« does not suffice: deactivate some or all Gstripes.
Example 6.42. Disable Gstripes Completely
# Disable all stripes: option add *stripes 0 option add *Goolbar.stripes 0
or inside the X Resource Database:
*stripes: 0
*Goolbar.stripes 0
Example 6.43. Disable Gstripes Selectively
# stripesmenu... # For menus via postcommand: option add *Menu.stripes 0 # stripes and substripes... # For certain classes using stripes: option add *MyClassWithoutStrips.stripes 0 # For certain instances using stripes: option add *mywindow.stripes 0