From e1e8d058a33f7566f9c565d04b0d8b56f9645c35 Mon Sep 17 00:00:00 2001 From: Dimitri Sokolyuk Date: Wed, 25 Apr 2018 09:28:54 +0200 Subject: add vendor --- vendor/golang.org/x/image/draw/go1_9.go | 57 +++++++++++++++++++++++++++++++++ 1 file changed, 57 insertions(+) create mode 100644 vendor/golang.org/x/image/draw/go1_9.go (limited to 'vendor/golang.org/x/image/draw/go1_9.go') diff --git a/vendor/golang.org/x/image/draw/go1_9.go b/vendor/golang.org/x/image/draw/go1_9.go new file mode 100644 index 0000000..fc548e9 --- /dev/null +++ b/vendor/golang.org/x/image/draw/go1_9.go @@ -0,0 +1,57 @@ +// Copyright 2016 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. + +// +build go1.9 go1.8.typealias + +package draw + +import ( + "image/draw" +) + +// We use type aliases (new in Go 1.9) for the exported names from the standard +// library's image/draw package. This is not merely syntactic sugar for +// +// type Drawer draw.Drawer +// +// as aliasing means that the types in this package, such as draw.Image and +// draw.Op, are identical to the corresponding draw.Image and draw.Op types in +// the standard library. In comparison, prior to Go 1.9, the code in go1_8.go +// defines new types that mimic the old but are different types. +// +// The package documentation, in draw.go, explicitly gives the intent of this +// package: +// +// This package is a superset of and a drop-in replacement for the +// image/draw package in the standard library. +// +// Drop-in replacement means that I can replace all of my "image/draw" imports +// with "golang.org/x/image/draw", to access additional features in this +// package, and no further changes are required. That's mostly true, but not +// completely true unless we use type aliases. +// +// Without type aliases, users might need to import both "image/draw" and +// "golang.org/x/image/draw" in order to convert from two conceptually +// equivalent but different (from the compiler's point of view) types, such as +// from one draw.Op type to another draw.Op type, to satisfy some other +// interface or function signature. + +// Drawer contains the Draw method. +type Drawer = draw.Drawer + +// 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 -- cgit v1.2.3