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问题描述

我使用 java.awt.Color 实例。有什么办法对颜色进行算术运算吗?像 rgb(20,20,20)+ rgb(10,200,170)= rgb(30,220,190)



我想要做的:我有一个gui有一个表,其中如果用户点击一个单元格,其他单元格根据它们之间的关系改变颜色。我正在寻找一种方法来避免硬编码什么基本颜色,以及它们改变哪些颜色值。



所以选择的单元格可能是 rgb(255,0,0),其他一切可能在 rgb(0,0,0) rgb(0,255,0)。我在想...枚举?

  import java.awt.Color; 

public enum ColorConstant {
SELECTED(new rgb(255,0,0),Red),
MAX_DISTANCE(new rgb(0,255,0),绿色)

私人色彩;
private ??? whichColorToModify;

}


解决方案方法Color.brighter和Color.darker。



除此之外,我通常写一个小的实用程序方法用于这样的目的,如:

  private static颜色亮度(Color c,double scale){
int r = Math.min(255,(int)(c.getRed * scale));
int g = Math.min(255,(int)(c.getGreen()* scale));
int b = Math.min(255,(int)(c.getBlue()* scale));
return new Color(r,g,b);
}


I'm working with java.awt.Color instances. Is there any way to do arithmetic operations on colors? Something like rgb(20, 20, 20) + rgb(10, 200, 170) = rgb(30, 220, 190)?

What I'm trying to do: I have a gui that features a table, where if the user clicks on a cell, the other cells change color based on their relationship to the selected one. I'm looking for a way to avoid hard coding what the base colors are, and on which color values they change.

So the selected cell might be rgb(255, 0, 0), and everything else might be between rgb(0, 0, 0) and rgb(0, 255, 0) based on their values. I'm thinking... enums?

import java.awt.Color;

public enum ColorConstant {
    SELECTED (new rgb(255, 0, 0), "Red"),
    MAX_DISTANCE (new rgb(0, 255, 0), "Green")

    private Color shade;
    private ??? whichColorToModify;

}
解决方案

There are the methods Color.brighter and Color.darker.

Other than that, I usually write a small utility methods for such purposes, like:

private static Color brightness(Color c, double scale) {
    int r = Math.min(255, (int) (c.getRed() * scale));
    int g = Math.min(255, (int) (c.getGreen() * scale));
    int b = Math.min(255, (int) (c.getBlue() * scale));
    return new Color(r,g,b);
}

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10-21 08:04