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encodePNG implemented

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Fixes #2.

Allows passing in an io.Writer to save a PNG.
This commit is contained in:
Emmanuel Odeke 2016-02-24 12:24:57 -08:00
parent d4745d7279
commit 93f92929f2
1 changed files with 7 additions and 0 deletions
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7
context.go
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@ -5,6 +5,8 @@ import (
"image" "image"
"image/color" "image/color"
"image/draw" "image/draw"
"image/png"
"io"
"math" "math"
"github.com/golang/freetype/raster" "github.com/golang/freetype/raster"
@ -103,6 +105,11 @@ func (dc *Context) SavePNG(path string) error {
return SavePNG(path, dc.im) return SavePNG(path, dc.im)
} }
// EncodePNG encodes the image as a PNG and writes it to the provided io.Writer.
func (dc *Context) EncodePNG(w io.Writer) error {
return png.Encode(w, dc.im)
}
// SetDash sets the current dash pattern to use. Call with zero arguments to // SetDash sets the current dash pattern to use. Call with zero arguments to
// disable dashes. The values specify the lengths of each dash, with // disable dashes. The values specify the lengths of each dash, with
// alternating on and off lengths. // alternating on and off lengths.