help.txt

这是一个在Brew环境下开发的SVG矢量图播放器

[Introduction]
Apron is a SVG Viewer application written using BREW APIs. All svg & svgz content based on SVG Tiny 1.2 specification can be viewed. The content can be animated or non-animated. Interactive content which accepts focus or pointer events can also be viewed. Zoom & Pan operations can be performed depending on the content's support. Content with embedded audio/video or scripts cannot be viewed.

[Options]
From the Content List menu, use UP/DOWN/LEFT/RIGHT keys to access the options. The options menu lets the user to change the user event type, pointer sensitivity, pan sensitivity, framerate & seek interval. Use the UP/DOWN/LEFT/RIGHT keys to set the various parameters. Pressing CLR key would take the user back to the Content List Menu.

To change seek interval, enter a new value & press SELECT key, the data will be saved. Pressing CLR key would take the user back to the Content List Menu.

[Content List]
In the Content List menu, use UP/DOWN keys to browse the avialable list of content. Only content with file extensions svg & svgz will be displayed. Use SELECT key to view the content.

[Content Playback]
While the Content is getting played, the context menu will be displayed. Use LEFT/RIGHT keys & SELECT key to pause or zoom or pan or to send user events to the content. In some cases, Zoom & Pan buttons will not be present when the currently played content has no support for Zoom & Pan. When the content is being zoomed/panned/interacted-with, pressing CLR key would get the user back to the context menu.

[Further Navigation]
CLR key:
  will always take user to the previous menu. However, there are exceptions. When the content is being zoomed, pressing CLR key would disable any further zoom & would enable the context menu.
END key:
  will always exit the application 

[Troubleshooting]
1) The application may not start when there is no content in the *content* directory.
2) The apron.sig might be invalid.
3) The content might not play if it has embedded audio/video/scripts.