<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8">
<title>Title</title>
<style>
h1 {
margin: 10px 0;
font-size: 16px;
}
.test {
width: 300px;
height: 150px;
padding: 10px;
background: #050;
}
.test2 {
width: 300px;
height: 150px;
margin: -120px 0 0 50px;
padding: 10px;
background: #000;
filter: alpha(opacity=50);
opacity: .5;
color: #fff;
}
</style>
</head>
<body>
<h1>下例是一个半透明的效果：</h1>
<div class="test">不透明度为100%的box</div>
<div class="test2">不透明度为50%的box</div>
</body>
</html>
ui.tab1->setPalette(QWidget::palette().color(this->backgroundRole()));
ui.tab1->setAutoFillBackground(true);
ui.tab2->setPalette(QWidget::palette().color(this->backgroundRole()));
ui.tab2->setAutoFillBackground(true);
sequenceDiagram
participant 小白
participant 开发者
小白->>开发者: 询问如何实现 Android SVG 动态改变颜色
开发者->>小白: 教导如何实现
<svg width="8px" height="12px" viewBox="0 0 8 12" version="1.1" xmlns="http://www.w3.org/2000/svg" xmlns:xlink="http://www.w3.org/1999/xlink">
<!-- Generator: Sketch 47.1 (45422) - http://www.bohemiancoding.com/sketch -->
<title>Rectangle 8 Copy 10</title>
<desc>Created with Sketch.</desc>
<defs></defs>
<g id="Page-1" stroke="none" stroke-width="1" fill="none" fill-rule="evenodd" stroke-linecap="round" stroke-linejoin="round">
<polyline id="Rectangle-8-Copy-10" stroke="#8F99AE" stroke-width="2" transform="translate(2.242641, 6.242641) scale(1, -1) rotate(-135.000000) translate(-2.242641, -6.242641) " points="5.24264069 9.24264069 -0.757359313 9.24264069 -0.757359313 3.24264069 -0.757359313 3.24264069"></polyline>
</g>
</svg>
<svg width="8px" height="12px" viewBox="0 0 8 12" version="1.1" xmlns="http://www.w3.org/2000/svg" xmlns:xlink="http://www.w3.org/1999/xlink">
<!-- Generator: Sketch 47.1 (45422) - http://www.bohemiancoding.com/sketch -->
<title>Rectangle 8 Copy 10</title>
<desc>Created with Sketch.</desc>
<defs></defs>
<g id="Page-1" stroke="none" stroke-width="1" fill="none" fill-rule="evenodd" stroke-linecap="round" stroke-linejoin="round">
<polyline id="Rectangle-8-Copy-10" stroke="#8F99AE" stroke-width="2" transform="translate(2.242641, 6.242641) scale(1, -1) rotate(-135.000000) translate(-2.242641, -6.242641) " points="5.24264069 9.24264069 -0.757359313 9.24264069 -0.757359313 3.24264069 -0.757359313 3.24264069"></polyline>
</g>
</svg>
filter: none
| blur()
| brightness()
| contrast()
| drop-shadow()
| grayscale()
| hue-rotate()
| invert()
| opacity()
| saturate()
| sepia()
| url();<svg
:class="{'is-active':isActive}"
class="hamburger"
viewBox="0 0 1024 1024"
xmlns="http://www.w3.org/2000/svg"
width="64"
height="64"
>
<path fill="#fff" d="M408 442h480c4.4 0 8-3.6 8-8v-56c0-4.4-3.6-8-8-8H408c-4.4 0-8 3.6-8 8v56c0 4.4 3.6 8 8 8zm-8 204c0 4.4 3.6 8 8 8h480c4.4 0 8-3.6 8-8v-56c0-4.4-3.6-8-8-8H408c-4.4 0-8 3.6-8 8v56zm504-486H120c-4.4 0-8 3.6-8 8v56c0 4.4 3.6 8 8 8h784c4.4 0 8-3.6 8-8v-56c0-4.4-3.6-8-8-8zm0 632H120c-4.4 0-8 3.6-8 8v56c0 4.4 3.6 8 8 8h784c4.4 0 8-3.6 8-8v-56c0-4.4-3.6-8-8-8zM142.4 642.1L298.7 519a8.84 8.84 0 0 0 0-13.9L142.4 381.9c-5.8-4.6-14.4-.5-14.4 6.9v246.3a8.9 8.9 0 0 0 14.4 7z" />
</svg><svg
:class="{'is-active':isActive}"
class="hamburger"
viewBox="0 0 1024 1024"
xmlns="http://www.w3.org/2000/svg"
width="64"
height="64"
>
<path fill="#fff" d="M408 442h480c4.4 0 8-3.6 8-8v-56c0-4.4-3.6-8-8-8H408c-4.4 0-8 3.6-8 8v56c0 4.4 3.6 8 8 8zm-8 204c0 4.4 3.6 8 8 8h480c4.4 0 8-3.6 8-8v-56c0-4.4-3.6-8-8-8H408c-4.4 0-8 3.6-8 8v56zm504-486H120c-4.4 0-8 3.6-8 8v56c0 4.4 3.6 8 8 8h784c4.4 0 8-3.6 8-8v-56c0-4.4-3.6-8-8-8zm0 632H120c-4.4 0-8 3.6-8 8v56c0 4.4 3.6 8 8 8h784c4.4 0 8-3.6 8-8v-56c0-4.4-3.6-8-8-8zM142.4 642.1L298.7 519a8.84 8.84 0 0 0 0-13.9L142.4 381.9c-5.8-4.6-14.4-.5-14.4 6.9v246.3a8.9 8.9 0 0 0 14.4 7z" />
</svg>#在Linux终端中，使用转义序列来进行如上所述的显示，转义序列以ESC开头，即ASCII码下的\033，其格式为：
\033[显示方式;前景色;后景色m #开头
# 显示方式、前景色、背景色至少存在一个。
\033[显示方式m #结尾，如果不结尾会影响到后续的输出，其中说明将在下文给出svg {
fill: currentColor; //currentColor为css变量，自动读取当前元素颜色
}
#d1 {background-color: rgba(255, 0, 0, 0.5);} #d2 {background-color: rgba(0, 255, 0, 0.5);} #d3 {background-color: rgba(0, 0, 255, 0.5);}
>> import cv2
>> [c for c in dir(cv2) if c.startswith('COLOR_')]color: red //设置颜色
font-size: 50px; //设置字体的大小
font-family: "微软雅黑" //设置字体
font-style: italic; //字体倾斜，normal不倾斜
font-weight: bold; //加粗，normal为不加粗
line-height: 0px; //文字的行高
text-decoration:none; //取消a标签的下划线
text-indent: 20px; //文本首行缩进
text-align: center; //文本居中import java.awt.Color;
public class ColorExample {
public static void main(String[] args) {
Color red = new Color(255, 0, 0);
System.out.println("Red color RGB value: " + red.getRGB());
System.out.println("Red color brighter: " + red.brighter());
}
}
forced-color-adjust: auto;
forced-color-adjust: none;
/* Global values */
forced-color-adjust: inherit;
forced-color-adjust: initial;
forced-color-adjust: revert;
forced-color-adjust: revert-layer;
forced-color-adjust: unset;
语法格式：filter:drop-shadow(<offset-x> <offset-y> <blur-radius> <spread-radius> color )
