| // Copyright 2010 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 image |
| |
| // Colors from the HTML 4.01 specification: http://www.w3.org/TR/REC-html40/types.html#h-6.5 |
| // These names do not necessarily match those from other lists, such as the X11 color names. |
| var ( |
| Aqua = ColorImage{RGBAColor{0x00, 0xff, 0xff, 0xff}} |
| Black = ColorImage{RGBAColor{0x00, 0x00, 0x00, 0xff}} |
| Blue = ColorImage{RGBAColor{0x00, 0x00, 0xff, 0xff}} |
| Fuchsia = ColorImage{RGBAColor{0xff, 0x00, 0xff, 0xff}} |
| Gray = ColorImage{RGBAColor{0x80, 0x80, 0x80, 0xff}} |
| Green = ColorImage{RGBAColor{0x00, 0x80, 0x00, 0xff}} |
| Lime = ColorImage{RGBAColor{0x00, 0xff, 0x00, 0xff}} |
| Maroon = ColorImage{RGBAColor{0x80, 0x00, 0x00, 0xff}} |
| Navy = ColorImage{RGBAColor{0x00, 0x00, 0x80, 0xff}} |
| Olive = ColorImage{RGBAColor{0x80, 0x80, 0x00, 0xff}} |
| Red = ColorImage{RGBAColor{0xff, 0x00, 0x00, 0xff}} |
| Purple = ColorImage{RGBAColor{0x80, 0x00, 0x80, 0xff}} |
| Silver = ColorImage{RGBAColor{0xc0, 0xc0, 0xc0, 0xff}} |
| Teal = ColorImage{RGBAColor{0x00, 0x80, 0x80, 0xff}} |
| White = ColorImage{RGBAColor{0xff, 0xff, 0xff, 0xff}} |
| Yellow = ColorImage{RGBAColor{0xff, 0xff, 0x00, 0xff}} |
| |
| // These synonyms are not in HTML 4.01. |
| Cyan = Aqua |
| Magenta = Fuchsia |
| ) |
| |
| // A ColorImage is a practically infinite-sized Image of uniform Color. |
| // It implements both the Color and Image interfaces. |
| type ColorImage struct { |
| C Color |
| } |
| |
| func (c ColorImage) RGBA() (r, g, b, a uint32) { |
| return c.C.RGBA() |
| } |
| |
| func (c ColorImage) ColorModel() ColorModel { |
| return ColorModelFunc(func(Color) Color { return c.C }) |
| } |
| |
| func (c ColorImage) Width() int { return 1e9 } |
| |
| func (c ColorImage) Height() int { return 1e9 } |
| |
| func (c ColorImage) At(x, y int) Color { return c.C } |