This question already has answers here:
SVG data image not working as a background-image in a pseudo element
(4 answers)
Closed 3 years ago.
The following HTML code renders me a pattern that contains an image of type .svg inside another SVG.
<html>
<body>
<svg width="0px" height="0px">
<defs>
<pattern id="saint1729" patternUnits="userSpaceOnUse" width="8" height="8" fill="#ff7156">
<image xlink:href="http://saint1729.me/tiny-checkered-pattern.svg" x="0" y="0" width="8" height="8" />
</pattern>
</defs>
</svg>
<div>
<svg width="240" height="16">
<path d="M0 0 H240 V16 H0 Z" fill="url(#saint1729)"/>
</svg>
</div>
</body>
</html>
When I changed the image attribute href inside pattern to direct SVG tag (which is coming from the same URL), I don't see anything rendered. Here's the code for this scenario.
<html>
<body>
<svg width="0px" height="0px">
<defs>
<pattern id="saint1729" patternUnits="userSpaceOnUse" width="8" height="8" fill="#ff7156">
<image xlink:href="<svg xmlns='http://www.w3.org/2000/svg' width='8' height='8' viewBox='0 0 8 8'><g fill='#c82c0e' fill-opacity='1'><path fill-rule='evenodd' d='M0 0h4v4H0V0zm4 4h4v4H4V4z'/></g></svg>" x="0" y="0" width="8" height="8" />
</pattern>
</defs>
</svg>
<div>
<svg width="240" height="16">
<path d="M0 0 H240 V16 H0 Z" fill="url(#saint1729)"/>
</svg>
</div>
</body>
</html>
What is the difference between the two? How to make the second approach work?
I am using Google Chrome browser.
However this is working. You need to encode the svg. I use this SVG encoder. Also please read this post: Optimizing SVGs in data URIs
<svg width="0px" height="0px">
<defs>
<pattern id="saint1729" patternUnits="userSpaceOnUse" width="8" height="8" fill="#ff7156">
<image xlink:href="data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='8' height='8' viewBox='0 0 8 8'%3E%3Cg fill='%23c82c0e' fill-opacity='1'%3E%3Cpath fill-rule='evenodd' d='M0 0h4v4H0V0zm4 4h4v4H4V4z'/%3E%3C/g%3E%3C/svg%3E" x="0" y="0" width="8" height="8" />
</pattern>
</defs>
</svg>
<div>
<svg width="240" height="16">
<path d="M0 0 H240 V16 H0 Z" fill="url(#saint1729)"/>
</svg>
</div>
This is my code:
<?xml version="1.0">
<!DOCTYPE svg PUBLIC "-//W3C//DTD SVG 1.1//EN"
"http://www.w3.org/Graphics/SVG/1.1/DTD/svg11.dtd">
<svg width="100%" height="100%" viewBox="0 0 100 30" version="1.1">
<text id="t1" x="50%" y="50%" text-anchor="middle">Hello World</text>
<g transform="translate(0,0) rotate(0)">
<rect x="0" y="0" width="10" height="10" fill="blue" />
</g>
</svg>
This gives me hello world and a rectangle. I would like to know how to position my rectangle relative to my text. I thought this would do the trick, but according to my code above the rectangle should sit on top of the text but it does not.
Edit: I tried this but it didn't change anything:
<?xml version="1.0">
<!DOCTYPE svg PUBLIC "-//W3C//DTD SVG 1.1//EN"
"http://www.w3.org/Graphics/SVG/1.1/DTD/svg11.dtd">
<svg width="100%" height="100%" viewBox="0 0 100 30" version="1.1">
<g transform="translate(0,0) rotate(0)">
<rect x="0" y="0" width="10" height="10" fill="blue" />
</g>
<text id="t1" x="50%" y="50%" text-anchor="middle">Hello World</text>
</svg>
Is this close to what you want?
<svg width="100%" height="100%" viewBox="0 0 100 30" version="1.1">
<rect x="0" y="0" width="100%" height="100%" fill="blue" />
<text id="t1" x="50%" y="50%" text-anchor="middle" dy="0.3em">Hello World</text>
</svg>
The correct value to use for dy, to get the text vertically centred, is font specific. You may have to tweak that value to match whichever font you choose. In my opinion, it is a more reliable alternative to other solutions like alignment-baseline etc.
Another Approach you can try! Maybe It will fit for you ...
p {
font-size: 42px;
}
p>svg {
width: 60px;
height: 60px;
display: inline-block;
position: relative;
top: 28px;
}
<div style="display:none">
<svg width="100%" height="100%" version="1.1" xmlns="http://www.w3.org/2000/svg" xmlns:xlink="http://www.w3.org/1999/xlink">
<symbol viewBox="0 0 20 20" id="box">
<g transform="translate(0,0) rotate(0)">
<rect x="0" y="0" width="12" height="12" fill="blue" />
</g>
</symbol>
</svg>
</div>
<p>
<svg>
<use xlink:href="#box"></use>
</svg> Hello World
</p>
I would like to create resolution independent SVG that uses <image> element. Is it possible to test for actual pixel ratio of the user agent? Please look at the example:
<?xml version="1.0" encoding="UTF-8"?>
<!DOCTYPE svg PUBLIC "-//W3C//DTD SVG 1.1//EN" "http://www.w3.org/Graphics/SVG/1.1/DTD/svg11.dtd">
<svg version="1.1" xmlns="http://www.w3.org/2000/svg" xmlns:xlink="http://www.w3.org/1999/xlink" width="640" height="480">
<defs>
<pattern id="test" patternUnits="userSpaceOnUse"
x="0" y="0" width="130" height="100"
viewBox="0 0 130 100" >
<IF PIXEL RATIO = 2>
<image xlink:href="test_2x.png" id="svg_1" height="100" width="130" y="0" x="0"/>
<ELSE>
<image xlink:href="test.png" id="svg_1" height="100" width="130" y="0" x="0"/>
<END IF>
</pattern>
</defs>
<rect id="rectangle" stroke="rgb(29, 29, 255)" fill="url(#test)" x="50" y="47" width="320" height="240" />
</svg>
I only have found Switch Element in the documentation but it doesn't seem to be very helpful since there is no "retina display" feature. Or is there? :)
You could use CSS media selectors to detect retina displays. Using the display property, you can switch the images on and off depending on the device.
I don't have an Apple retina device at hand to test, but I think something like this should work:
<svg version="1.1" xmlns="http://www.w3.org/2000/svg" xmlns:xlink="http://www.w3.org/1999/xlink" width="640" height="480">
<style type="text/css">
#media all {
#test_2x_png {display:none}
}
#media (-webkit-min-device-pixel-ratio: 2) {
#test_png {display:none;}
#test_2x_png {display:inline;}
}
</style>
<defs>
<pattern id="test" patternUnits="userSpaceOnUse"
x="0" y="0" width="130" height="100"
viewBox="0 0 130 100" >
<image xlink:href="test_2x.png" height="100" width="130" y="0" x="0" id="test_2x_png"/>
<image xlink:href="test.png" height="100" width="130" y="0" x="0" id="test_png"/>
</pattern>
</defs>
<rect id="rectangle" stroke="rgb(29, 29, 255)" fill="url(#test)" x="50" y="47" width="320" height="240" />
</svg>
How would I fill an SVG shape, not with a single colour, an image or a gradient, but with a hatching pattern, diagonal if possible.
It's been 2 hours and I've found nothing (at least after 2005).
I figure a possible hack would be a hatched PNG that would serve as fill, but that is not ideal.
I did not find anything for diagonal hatching on the internet either, so I'll share my solution here:
<pattern id="diagonalHatch" patternUnits="userSpaceOnUse" width="4" height="4">
<path d="M-1,1 l2,-2
M0,4 l4,-4
M3,5 l2,-2"
style="stroke:black; stroke-width:1" />
</pattern>
(note the lower case "l" in the path expression)
The above creates a hatch with diagonal lines from the lower left to the upper right that are 4 pixels apart. Besides the diagonal line (M0,4 l4,-4) you also have to stroke the upper left and the lower right edges of the pattern area, since the line will otherwise be "constricted" due to clipping where it intersects the edges of the square.
To fill a rectangle with this pattern, do:
<rect x="0" y="0" width="100%" height="100%" fill="url(#diagonalHatch)"/>
Use the patternTransform attribute to rotate a vertical (or horizontal) line segment. This method tiles seamlessly and uses the simplest possible path. The pattern width attribute controls how close parallel hatches are.
<pattern id="diagonalHatch" width="10" height="10" patternTransform="rotate(45 0 0)" patternUnits="userSpaceOnUse">
<line x1="0" y1="0" x2="0" y2="10" style="stroke:black; stroke-width:1" />
</pattern>
This code from http://bl.ocks.org/jfsiii/7772281 seems very clean and reusable:
svg {
width: 500px;
height: 500px;
}
rect.hbar {
mask: url(#mask-stripe)
}
.thing-1 {
fill: blue;
}
.thing-2 {
fill: green;
}
<!DOCTYPE html>
<html>
<head>
<meta charset=utf-8 />
<title>SVG colored patterns via mask</title>
</head>
<body>
<svg>
<defs>
<pattern id="pattern-stripe"
width="4" height="4"
patternUnits="userSpaceOnUse"
patternTransform="rotate(45)">
<rect width="2" height="4" transform="translate(0,0)" fill="white"></rect>
</pattern>
<mask id="mask-stripe">
<rect x="0" y="0" width="100%" height="100%" fill="url(#pattern-stripe)" />
</mask>
</defs>
<!-- bar chart -->
<rect class="hbar thing-2" x="0" y="0" width="50" height="100"></rect>
<rect class="hbar thing-2" x="51" y="50" width="50" height="50"></rect>
<rect class="hbar thing-2" x="102" y="25" width="50" height="75"></rect>
<!-- horizontal bar chart -->
<rect class="hbar thing-1" x="0" y="200" width="10" height="50"></rect>
<rect class="hbar thing-1" x="0" y="251" width="123" height="50"></rect>
<rect class="hbar thing-1" x="0" y="302" width="41" height="50"></rect>
</svg>
</body>
</html>
You may be able to create, what you want using a <pattern> tag.
As a starting point you might take this example of the respective MDN docu:
<?xml version="1.0"?>
<svg width="120" height="120" viewBox="0 0 120 120"
xmlns="http://www.w3.org/2000/svg" version="1.1"
xmlns:xlink="http://www.w3.org/1999/xlink">
<defs>
<pattern id="Triangle"
width="10" height="10"
patternUnits="userSpaceOnUse">
<polygon points="5,0 10,10 0,10"/>
</pattern>
</defs>
<circle cx="60" cy="60" r="50"
fill="url(#Triangle)"/>
</svg>
One problem with drawing a diagonal line within a pattern is that when the pattern is tiled the lines won't always line up - especially at high zooms. (It depends on the SVG rendering engine you happen to be using).
#Ingo's answer above attempts to resolve this by drawing in the triangles at the top-left and bottom-right corners - but again, using some rendering engines and high zooms, it doesn't always look best - and sometimes the line ends up looking a bit like a string of sausages.
Another approach is to draw a horizontal line in the pattern and rotate the pattern, e.g.
<svg:svg viewBox="0 0 100 100" version="1.1"
xmlns:svg="http://www.w3.org/2000/svg"
xmlns:xlink="http://www.w3.org/1999/xlink">
<svg:defs>
<svg:pattern id="diagonalHatch" patternUnits="userSpaceOnUse" width="4" height="4" patternTransform="rotate(45 2 2)">
<svg:path d="M -1,2 l 6,0" stroke="#000000" stroke-width="1"/>
</svg:pattern>
</svg:defs>
<svg:rect x="0" y="0" height="100" width="100" fill="url(#diagonalHatch)"/>
These two resources are very helpful:
https://bocoup.com/weblog/using-svg-patterns-as-fills
https://github.com/iros/patternfills/blob/master/public/patterns.css
For example:
<svg xmlns='http://www.w3.org/2000/svg' width='10' height='10'>
<rect width='10' height='10' fill='red'/>
<path d='M-1,1 l2,-2
M0,10 l10,-10
M9,11 l2,-2' stroke='orange' stroke-width='2'/>
</svg>
This is a solution for diagonal lines using circle in pattern. You can change angle as per your requirements.
<svg width="500" height="500">
<defs>
<pattern id="transformedPattern"
x="0" y="0" width="2" height="20"
patternUnits="userSpaceOnUse"
patternTransform="rotate(45)">
<circle cx="1" cy="1" r="2" style="stroke: none; fill: #0000ff" />
</pattern>
</defs>
<rect x="10" y="10" width="100" height="100"
style="stroke: #000000; fill: url(#transformedPattern);" />
</svg>
I tried with this sample. Hopefully, It can help you much.
<!DOCTYPE html>
<html>
<head>
<meta charset=utf-8 />
<title>SVG colored patterns via mask</title>
</head>
<body>
<svg viewBox="0 0 300 300" xmlns="http://www.w3.org/2000/svg">
<defs>
<pattern id="stripes" viewBox="0,0,8,8" width="16" height="16" patternUnits="userSpaceOnUse">
<polygon points="0,0 4,0 0,4" fill="yellow"></polygon>
<polygon points="0,8 8,0 8,4 4,8" fill="yellow"></polygon>
<polygon points="0,4 0,8 8,0 4,0" fill="green"></polygon>
<polygon points="4,8 8,8 8,4" fill="green"></polygon>
</pattern>
</defs>
<rect fill="url(#stripes)" x="150" y="20" width="100" height="50" />
<circle cx="50" cy="50" r="50" fill="url(#stripes)"/>
</svg>
</body>
</html>
Regards,
Vu Phan
SVG 2 has a hatch entity for specifically this purpose. From that page's example section:
<hatch hatchUnits="userSpaceOnUse" pitch="5" rotate="135">
<hatchpath stroke="#a080ff" stroke-width="2"/>
</hatch>
This is a very easily configurable way to create hatches:
Furthermore the hatch path can also be customised:
<hatchpath stroke-width="1" d="C 0,4 8,6 8,10 8,14 0,16 0,20"/>
For React Native use can use this component, for making background lines pattern.
You should add to your project react-native-svg
import PropTypes from 'prop-types';
import React, { PureComponent } from "react";
import { View } from "react-native";
import Svg, { Defs, Line, Pattern, Rect } from 'react-native-svg';
export default class PatternLineView extends PureComponent {
static propTypes = {
pattern: PropTypes.func.isRequired,
space: PropTypes.number,
backgroundColor: PropTypes.string,
lineColor: PropTypes.string,
lineWidth: PropTypes.number,
rotation: PropTypes.number
}
static defaultProps = {
pattern: () => { },
space: 8,
lineColor: "#D2D9E5",
lineWidth: 3,
rotation: 45
}
render() {
const transform = `rotate(${this.props.rotation})`
return <View style={{
flex: 1,
flexDirection: "row",
height: "100%",
width: "100%",
position: "absolute",
top: 0,
start: 0,
backgroundColor: this.props.backgroundColor
}}>
<Svg width="100%" height="100%">
<Defs>
<Pattern
id="linePattern"
patternUnits="userSpaceOnUse"
patternTransform={transform}
width={this.props.space}
height={this.props.space}>
<Line
x1="0"
y1="0"
x2="0"
y2="100%"
stroke={this.props.lineColor}
strokeWidth={this.props.lineWidth}
/>
</Pattern>
</Defs>
<Rect
fill="url(#linePattern)"
x="0"
y="0"
width="100%"
height="100%"
/>
</Svg>
</View>
}
}
I've adapted Ingo's answer here.
<defs>
<pattern id="diagonalHatch" patternUnits="userSpaceOnUse" width="4" height="4">
<!-- background -->
<path id="background"
d="M-1,3 L3,-1
M1,5 L5,1" style="stroke:pink; stroke-width:10" />
<!-- hatches -->
<path id="hatches"
d="M-2,2 L2,-2
M0,4 L4,0
M2,6 L6,2" style="stroke:red; stroke-width:1" />
</pattern>
</defs>
This pattern includes two paths, one for the background, and other for the hatches. The background color is addressable vs JS such as:
const hatchPath = document.querySelector("path#hatches");
hatchPath.setAttribute('style', "stroke:blue; stroke-width:1")
The background path is overly-wide on purpose, so that there's no part of the pattern not at least covered by the background. Meanwhile, the hatches can have their width tuned to change how thick the lines are.
Some great points got lost in the comments, so I wanted to aggregate that knowledge with some simpler inline examples. As far as I can tell, what method you choose to use is entirely up to preference since the heavy lifting is being done by patternTransform + rotate either way, but personally I think the <rect> method is easier to digest at-a-glance even if it might make more semantic sense to use <line>.
SVG Non-Scaling Pattern with <rect>
Define the spacing between your lines with the <pattern>'s width, and the width of the lines themselves via the nested <rect>'s width.
Codepen example as full-size background.
<svg height="100%" width="100%" xmlns="http://www.w3.org/2000/svg">
<pattern id="diaHatch" width="9" height="1" patternUnits="userSpaceOnUse" patternTransform="rotate(45)">
<rect x="0" y="0" width="3" height="1" fill="red" />
</pattern>
<rect x="0" y="0" width="100%" height="100%" fill="url(#diaHatch)" />
</svg>
SVG Non-Scaling Pattern with <line>
Define the spacing between the <line>s with the pattern height, and use stroke-width for the <line> itself.
Codepen example as full-size background.
<svg height="100%" width="100%" xmlns="http://www.w3.org/2000/svg">
<pattern id="diaHatch" width="1" height="9" patternUnits="userSpaceOnUse" patternTransform="rotate(45)">
<line x1="0" x2="100%" y1="0" y2="0" stroke-width="9" stroke="black" />
</pattern>
<rect x="0" y="0" width="100%" height="100%" fill="url(#diaHatch)" />
</svg>
On SVG 2 & Hatches [as of October 2022]
While the above examples solve the issue, SVG 2's Hatches (Candidate Recommendation 2016) are a documented method of tackling this exact issue. Inkscape happens to implement them because one of its developers, Tavmjong Bah, was an Invited Expert at the time, but browsers are still tackling them. To note, the latest Editor's Draft (2018) doesn't include hatch, which doesn't necessarily mean anything, but might be why it hasn't yet been prioritized by browser vendors.
Tracking SVG 2 Features for the Browser
Each major engine has an ongoing thread for feature implementations:
SVG 2 in Gecko
SVG 2 in Blink
SVG 2 in Webkit