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1 import java.awt.*;
2 import java.awt.event.*;
3 import java.awt.image.*;
4
5 public class ColorPicker extends Canvas implements MouseListener
6 {
7 private float
8 width = 204,
9 height = 204,
10 width2 = 10;
11 public Color selected = new Color(0, 0, 0);
12
13 private Color colors[][];
14
15 private Image image;
16 private Graphics graphics;
17
18 private TextField output;
19
20 public ColorPicker()
21 {
22 addMouseListener(this);
23
24 colors = new Color[(int)(width+width2)][(int)height];
25 }
26
27 public void paint(Graphics screen)
28 {
29 float r, g, b;
30
31 if (super.getSize().width != width+width2 || super.getSize().height != height)
32 {
33 image = null;
34 width = super.getSize().width-width2;
35 height = super.getSize().height;
36
37 colors = new Color[Math.round(width+width2)][Math.round(height)];
38 }
39
40 if (image == null || graphics == null)
41 {
42 image = createImage(Math.round(width+width2), Math.round(height));
43 graphics = image.getGraphics();
44
45 for (float x = 0; x < 1f; x += 1f/width)
46 {
47 if (x <= 1f/3f)
49 {
50 r = (1f/3f-x)*3;
51 g = x*3;
52 b = 0f;
53 }
54 else if (x >= 1f/3f && x <= 2f/3f)
55 {
56 r = 0f;
57 g = (1f/3f-(x-1f/3f))*3;
58 b = (x-1f/3f)*3;
59 }
60 else
61 {
62 b = (1f/3f-(x-2f/3f))*3;
63 r = (x-2f/3f)*3;
64 g = 0f;
65 }
66
67 for (float y = 0f; y < 1f; y += 1f/height)
68 {
69
71 float
72 r2 = (r-0.5f)*(1f-y)+0.5f,
73 g2 = (g-0.5f)*(1f-y)+0.5f,
74 b2 = (b-0.5f)*(1f-y)+0.5f;
75
76 int
78 iX = Math.round(x*width),
79 iY = Math.round(y*height);
80
81 if (iX >= width+width2 || iY >= height)break;
82
83 colors[iX][iY] = new Color(r2, g2, b2);
84 graphics.setColor(colors[iX][iY]);
85 graphics.drawLine(iX, iY, iX, iY);
86 }
87 }
88 }
89
90 for (float y = 0f; y < 2f; y += 2f/height)
92 {
93 if (y <= 1f)
94 {
95 r = (float)selected.getRed()/255f *y;
96 g = (float)selected.getGreen()/255f*y;
97 b = (float)selected.getBlue()/255f *y;
98 }
99 else {
101 r = (float)selected.getRed()/255f +y-1f;
102 g = (float)selected.getGreen()/255f+y-1f;
103 b = (float)selected.getBlue()/255f +y-1f;
104 }
105
106 if (r > 1f)r = 1f;
107 if (g > 1f)g = 1f;
108 if (b > 1f)b = 1f;
109
110 int
111 iY = Math.round(y/2*height),
112 iX = Math.round(width),
113 iX2 = Math.round(width+width2);
114
115 if (iX >= width+width2 || iY >= height)break;
116
117 Color c = new Color(r, g, b);
118 for (int x = 0; x < width2; x ++)
119 colors[Math.round(width+x)][iY] = c;
120
121
122 graphics.setColor(c);
123 graphics.drawLine(iX, iY, iX2, iY);
124 }
125
126 screen.drawImage(image, 0, 0, this);
127 }
128
129 public void setOutput(TextField out)
130 {
131 output = out;
132 }
133
134 public void mouseClicked(MouseEvent e)
135 {
136 try
137 {
138 selected = colors[e.getX()][e.getY()];
139 }
140 catch (ArrayIndexOutOfBoundsException  asd){}
141 repaint();
142
143 if (output != null)
144 output.setText(Integer.toString(selected.getRGB() & 0xFFFFFF, 16));
145 }
146
147 public void mousePressed(MouseEvent e){}
148 public void mouseReleased(MouseEvent e){}
149 public void mouseEntered(MouseEvent e){}
150 public void mouseExited(MouseEvent e){}
151
152
156
157 public Dimension prefferedSize()
158 {
159 return new Dimension(0xfffff, 0xffff); }
161
162 public int getWidth(){return (int)(width+width2);};
163 public int getHeight(){return (int)height;};
164
165 public static void main(String args[])
166 {
167 Frame frame = new Frame();
168 frame.setLayout(new GridLayout());
169 frame.add(new ColorPicker());
170 frame.show();
171 frame.pack();
172 }
173 }
174 |
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