Changes

In sugar, a predefined set of control regions provide the surfaces upon which controls may be placed.  Limiting the background colors that the controls sit on allows for a consistent set of visual rules to define both the type and state of various controls while maintaining sufficient contrast even without the use of color.  Shown to the right, the basic regions are the Canvas, Panel, Toolbar, and Palette.

In sugar, a predefined set of control regions provide the surfaces upon which controls may be placed.  Limiting the background colors that the controls sit on allows for a consistent set of visual rules to define both the type and state of various controls while maintaining sufficient contrast even without the use of color.  Shown to the right, the basic regions are the Canvas, Panel, Toolbar, and Palette.

[[Image:control_regions.jpg|right|250px|Basic control regions]]

[[Image:control_regions.jpg|right|500px|Basic control regions]]

'''Canvas:'''  The canvas is the general purpose "creation" space within any activity — the region for drawing, writing, or otherwise working within it.  Since creation ranks high among our goals, we also hope that this is the dominant region of the screen in most activities.  The canvas region is specifically for generating content and 'should not' have any controls placed upon it.  As such, the canvas may be any color the activity or the user desires, though Sugar specifies both white and black as the basic defaults.

'''Canvas:'''  The canvas is the general purpose "creation" space within any activity — the region for drawing, writing, or otherwise working within it.  Since creation ranks high among our goals, we also hope that this is the dominant region of the screen in most activities.  The canvas region is specifically for generating content and 'should not' have any controls placed upon it.  As such, the canvas may be any color the activity or the user desires, though Sugar specifies both white and black as the basic defaults.