mirror of
https://github.com/TwiN/gatus.git
synced 2024-12-12 17:50:55 +01:00
62 lines
1.9 KiB
Go
62 lines
1.9 KiB
Go
|
// Copyright 2015 The Go Authors. All rights reserved.
|
||
|
|
// Use of this source code is governed by a BSD-style
|
||
|
|
// license that can be found in the LICENSE file.
|
||
|
|
|
||
|
|
// Package draw provides image composition functions.
|
||
|
|
//
|
||
|
|
// See "The Go image/draw package" for an introduction to this package:
|
||
|
|
// http://golang.org/doc/articles/image_draw.html
|
||
|
|
//
|
||
|
|
// This package is a superset of and a drop-in replacement for the image/draw
|
||
|
|
// package in the standard library.
|
||
|
|
package draw
|
||
|
|
|
||
|
|
// This file just contains the API exported by the image/draw package in the
|
||
|
|
// standard library. Other files in this package provide additional features.
|
||
|
|
|
||
|
|
import (
|
||
|
|
"image"
|
||
|
|
"image/draw"
|
||
|
|
)
|
||
|
|
|
||
|
|
// Draw calls DrawMask with a nil mask.
|
||
|
|
func Draw(dst Image, r image.Rectangle, src image.Image, sp image.Point, op Op) {
|
||
|
|
draw.Draw(dst, r, src, sp, draw.Op(op))
|
||
|
|
}
|
||
|
|
|
||
|
|
// DrawMask aligns r.Min in dst with sp in src and mp in mask and then
|
||
|
|
// replaces the rectangle r in dst with the result of a Porter-Duff
|
||
|
|
// composition. A nil mask is treated as opaque.
|
||
|
|
func DrawMask(dst Image, r image.Rectangle, src image.Image, sp image.Point, mask image.Image, mp image.Point, op Op) {
|
||
|
|
draw.DrawMask(dst, r, src, sp, mask, mp, draw.Op(op))
|
||
|
|
}
|
||
|
|
|
||
|
|
// Drawer contains the Draw method.
|
||
|
|
type Drawer = draw.Drawer
|
||
|
|
|
||
|
|
// FloydSteinberg is a Drawer that is the Src Op with Floyd-Steinberg error
|
||
|
|
// diffusion.
|
||
|
|
var FloydSteinberg Drawer = floydSteinberg{}
|
||
|
|
|
||
|
|
type floydSteinberg struct{}
|
||
|
|
|
||
|
|
func (floydSteinberg) Draw(dst Image, r image.Rectangle, src image.Image, sp image.Point) {
|
||
|
|
draw.FloydSteinberg.Draw(dst, r, src, sp)
|
||
|
|
}
|
||
|
|
|
||
|
|
// Image is an image.Image with a Set method to change a single pixel.
|
||
|
|
type Image = draw.Image
|
||
|
|
|
||
|
|
// Op is a Porter-Duff compositing operator.
|
||
|
|
type Op = draw.Op
|
||
|
|
|
||
|
|
const (
|
||
|
|
// Over specifies ``(src in mask) over dst''.
|
||
|
|
Over Op = draw.Over
|
||
|
|
// Src specifies ``src in mask''.
|
||
|
|
Src Op = draw.Src
|
||
|
|
)
|
||
|
|
|
||
|
|
// Quantizer produces a palette for an image.
|
||
|
|
type Quantizer = draw.Quantizer
|