48 lines
1.2 KiB
Go
48 lines
1.2 KiB
Go
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package draw2d
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// Types implementing this interface can be passed to gc.SetGlyphCache to change the
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// way glyphs are being stored and retrieved.
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type GlyphCache interface {
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// Fetch fetches a glyph from the cache, storing with Render first if it doesn't already exist
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Fetch(gc GraphicContext, fontName string, chr rune) *Glyph
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// Render renders a glyph then returns it
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Render(gc GraphicContext, fontName string, chr rune) *Glyph
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}
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// Glyph represents a rune which has been converted to a Path and width
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type Glyph struct {
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// Path represents a glyph, it is always at (0, 0)
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Path *Path
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// Width of the glyph
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Width float64
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}
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// Copy copys the Glyph, and returns the copy
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func (g *Glyph) Copy() *Glyph {
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return &Glyph{
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Path: g.Path.Copy(),
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Width: g.Width,
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}
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}
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// Fill fills a Glyph in the specified coordinates
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func (g *Glyph) Fill(gc GraphicContext, x, y float64) float64 {
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gc.Save()
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gc.BeginPath()
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gc.Translate(x, y)
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gc.Fill(g.Path)
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gc.Restore()
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return g.Width
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}
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// Stroke strokes a Glyph in the specified coordinates
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func (g *Glyph) Stroke(gc GraphicContext, x, y float64) float64 {
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gc.Save()
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gc.BeginPath()
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gc.Translate(x, y)
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gc.Stroke(g.Path)
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gc.Restore()
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return g.Width
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}
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