Using Chasys Photo Viewer
User Interface
Chasys Photo Viewer is the viewer program in the Chasys Photo suite. Chasys Photo Viewer is a high speed viewer application that is capable of viewing all image files that can be loaded by the Chasys Photo suite, including Chasys Draw Image Format (.cd5) and animated GIF.
This is the Chasys Photo Viewer main window:

This is what the window looks like when it is maximized. The window switches to full screen view, covering the entire screen. Most of the user interface items are either removed from the screen or made translucent to maximize the image viewing area as shown below:

The interface supports drag-drop, allowing you to open files by simply dragging them onto the viewer’s window. Right-clicking anywhere within the window brings up a popup menu where you can select various options and commands. Left-click works like the Hand tool in Chasys Photo Editor, allowing you to move the image around. The mouse-wheel provides zoom and pan functionality.
Commands
Chasys Photo Viewer is capable of performing certain operations internally, specifically, you can browse and delete image files, rotate images and open files in Chasys Photo Editor for editing at the click of a button. All operations are accessible through the popup menu and the buttons on the preview toolbar, but may also be accessed through the keyboard.
| Key | Function |
|---|---|
| Left Arrow | Previous file |
| Right Arrow | Next File |
| F7 | Rotate Anti-Clockwise |
| F8 | Rotate Clockwise |
| Page Down | Previous Page |
| Page Up | Next Page |
| Spacebar | Full-screen On/Off |
| Delete | Delete File |
| F1 | Help |
| F5 | Slideshow |
| E | Edit in Chasys Photo Editor |
| P | Print Image |
| M | Show Menu |
| N | Show Navigation Pane |
| Mouse-wheel | Pan and Zoom (see Preferences and Settings for details) |
| + | Zoom In |
| – | Zoom Out |
All functions in Chasys Photo Viewer are smart, which is to say the program will attempt to find and use the best possible method to do any operation. If, for example, you are trying to rotate a JPEG image and your JPEG plug-in supports JPEG loss-less transform and your core FastExternals™ system is transforms-aware, the rotation will be performed using the lossless method, otherwise a buffer will be used to cache the original, then a lossy transform will be applied.