DragZoom was created by Jonathon Mah to provide an easy way of zooming in Mac OS X's Preview application. Once installed, you can zoom any image or PDF by holding Command and dragging up or down to zoom in or out.

DragZoom requires SIMBL by Mike Solomon. Once SIMBL is installed, place DragZoom.bundle in ~/Library/Application Support/SIMBL/Plugins/.

• DragZoom 1.0 (Universal binary)

DragZoom can be seen as an example of a simple SIMBL plug-in incorporating class posing. You can browse the repository or download it with darcs:

darcs get http://www.jonathonmah.com/repos/DragZoom

DragZoom is licensed under the BSD license, as follows:

Copyright © 2006, Playhaus All rights reserved.

Redistribution and use in source and binary forms, with or without modification, are permitted provided that the following conditions are met:

• Redistributions of source code must retain the above copyright notice, this list of conditions and the following disclaimer.
• Redistributions in binary form must reproduce the above copyright notice, this list of conditions and the following disclaimer in the documentation and/or other materials provided with the distribution.
• Neither the name of the Playhaus nor the names of its contributors may be used to endorse or promote products derived from this software without specific prior written permission.

This software is provided by the copyright holders and contributors “as is” and any express or implied warranties, including, but not limited to, the implied warranties of merchantability and fitness for a particular purpose are disclaimed. In no event shall the copyright owner or contributors be liable for any direct, indirect, incidental, special, exemplary, or consequential damages (including, but not limited to, procurement of substitute goods or services; loss of use, data, or profits; or business interruption) however caused and on any theory of liability, whether in contract, strict liability, or tort (including negligence or otherwise) arising in any way out of the use of this software, even if advised of the possibility of such damage.