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https://github.com/taigrr/gopher-os
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50da8ab106
Since the Go runtime is not yet setup there is no support for spinlocking if a lock cannot be acquired. This makes the locking code useless for now.
49 lines
966 B
Go
49 lines
966 B
Go
package console
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// Attr defines a color attribute.
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type Attr uint16
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// The set of attributes that can be passed to Write().
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const (
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Black Attr = iota
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Blue
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Green
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Cyan
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Red
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Magenta
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Brown
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LightGrey
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Grey
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LightBlue
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LightGreen
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LightCyan
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LightRed
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LightMagenta
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LightBrown
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White
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)
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// ScrollDir defines a scroll direction.
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type ScrollDir uint8
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// The supported list of scroll directions for the console Scroll() calls.
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const (
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Up ScrollDir = iota
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Down
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)
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// The Console interface is implemented by objects that can function as physical consoles.
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type Console interface {
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// Dimensions returns the width and height of the console in characters.
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Dimensions() (uint16, uint16)
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// Clear clears the specified rectangular region
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Clear(x, y, width, height uint16)
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// Scroll a particular number of lines to the specified direction.
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Scroll(dir ScrollDir, lines uint16)
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// Write a char to the specified location.
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Write(ch byte, attr Attr, x, y uint16)
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}
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