summaryrefslogtreecommitdiff
path: root/dmagick/ColorGray.d
blob: 884655f17cffe74b8a2aa06352966a85f55e2403 (plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
/**
 * Copyright: Mike Wey 2011
 * License:   zlib (See accompanying LICENSE file)
 * Authors:   Mike Wey
 */

module dmagick.ColorGray;

import dmagick.Color;

import dmagick.c.magickType;
import dmagick.c.quantum;

/**
 * A Gray scale color.
 */
class ColorGray : Color
{
	///
	this()
	{
		super();
	}

	/**
	 * Create a Color from the specified Bytes.
	 */
	this(ubyte shade, ubyte opacity = 0)
	{
		Quantum gray = ScaleCharToQuantum(shade);

		super(gray, gray, gray, ScaleCharToQuantum(opacity));
	}

	/**
	 * Create a Color from the specified doubles.
	 * The values should be between 0.0 and 1.0.
	 */
	this(double shade, double opacity = 0)
	{
		Quantum gray = scaleDoubleToQuantum(shade);

		super(gray, gray, gray, scaleDoubleToQuantum(opacity));
	}

	/**
	 * The value for the shade as a double in the range [0.0 .. 1.0]
	 */
	void shade(double shade)
	{
		packet.red   = scaleDoubleToQuantum(shade);
		packet.green = scaleDoubleToQuantum(shade);
		packet.blue  = scaleDoubleToQuantum(shade);
	}
	///ditto
	double shade()
	{
		return scaleQuantumToDouble(packet.red);
	}
}