82 lines
1.7 KiB
Go
82 lines
1.7 KiB
Go
package tss
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import "os"
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import "git.tebibyte.media/tomo/tomo/event"
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import "git.tebibyte.media/tomo/backend/style"
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type Sheet struct {
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Path string
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Variables map[string] ValueList
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Rules []Rule
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flat bool
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}
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type Rule struct {
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Selector Selector
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Attrs map[string] []ValueList
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}
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type Selector struct {
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Package string
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Object string
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Tags []string
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}
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type ValueList []Value
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type Value interface {
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value ()
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}
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type ValueNumber int
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func (ValueNumber) value () { }
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type ValueColor uint32
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func (ValueColor) value () { }
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func (value ValueColor) RGBA () (r, g, b, a uint32) {
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// extract components
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bits := uint32(value)
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r = (bits & 0xFF000000) >> 24
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g = (bits & 0x00FF0000) >> 16
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b = (bits & 0x0000FF00) >> 8
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a = (bits & 0x000000FF)
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// extend to 16 bits per channel
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r = r << 8 | r
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g = g << 8 | g
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b = b << 8 | b
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a = a << 8 | a
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// alpha premultiply
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r = (r * a) / 0xFFFF
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g = (g * a) / 0xFFFF
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b = (b * a) / 0xFFFF
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return
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}
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type ValueString string
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func (ValueString) value () { }
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type ValueKeyword string
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func (ValueKeyword) value () { }
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type ValueVariable string
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func (ValueVariable) value () { }
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type ValueCut struct { }
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func (ValueCut) value () { }
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// LoadFile loads the stylesheet from the specified file. This may return a
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// parse.Error, so use parse.Format to print it.
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func LoadFile (name string) (*style.Style, event.Cookie, error) {
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// TODO check cache for gobbed sheet. if the cache is nonexistent or
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// invalid, then open/load/cache.
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file, err := os.Open(name)
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if err != nil { return nil, nil, err }
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defer file.Close()
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sheet, err := Parse(Lex(name, file))
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if err != nil { return nil, nil, err }
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sheet.Path = name
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return BuildStyle(sheet)
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}
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