Learn Development at Frontend Masters. The following is a guest post by Amelia Bellamy-Royds.
Here, she shares an epic guide to scaling SVG, covering all the ways you might want to do that. This year, you are going to start using SVG in your web designs. You create a fabulous header logo in Inkscape and you copy and paste the SVG code it spits out into your WordPress header file. Until you open up your web page in test browsers and discover that some leave huge blocks of whitespace above and below the image, while others crop it off too short.
So, scaling SVG should be easy, right? SVG looks great at any scale, but it can scale in so many different ways that getting it to behave just the way you want can be confusing for SVG beginners. The image file describes how the browser should color in a grid that is a certain number of pixels wide and a certain number of pixels tall.
An important side effect is that raster images have a clearly defined aspect ratio : the ratio of width to height. You can force the browser to draw a raster image at a different size than its intrinsic height and width, but if you force it to a different aspect ratio, things will get distorted.
For this reason, since the early days of the web there has been support for auto scaling on images: you set the height or the width, and the browser adjusts the other dimension so that the aspect ratio stays constant. The following example uses inline SVG, adjusting the dimensions of the element dotted linewithout ever altering the size of the drawn graphic:. Why does it behave this way? SVG is a document.
Same with SVG. By default, it will be drawn at the size specified in the code, regardless of the size of the canvas. What happens if you set the height or width or both to auto for these SVGs? The default size for HTML replaced elements will be used: px wide, px tall.
Below, I describe the code you need to get the scale you want for the most common situations:. Other images scale because the browser knows the height, width, and aspect ratio of the image, and it adjusts everything together. Giving SVG these properties is the first step to getting it to scale. However, scaling SVG goes beyond what is possible with other images.
A first glance at the SVG specifications would suggest that the height and width attributes on the top-level svg element will implicitly set an aspect ratio and therefore make SVG scale like other images.
So forget height and width.
Demo for svg-pan-zoom: In-line SVG
What you want is to set an aspect ratio for the image, and have the drawing scale to fit. You want a viewBox. The SVG viewBox is a whole lot of magic rolled up in one little attribute. The viewBox does many things:. Its value is a list of four numbers, separated by whitespace or commas: x, y, width, height. Even if your SVG code uses other units, such as inches or centimeters, these will also be scaled to match the overall scale created by the viewBox.
For simple scaling, you can set both values to 0. However, the x and y values are useful for two purposes: to create a coordinate system with an origin centered in the drawing this can make defining and transforming shapes easieror to crop an image tighter than it was originally defined. Instead, the scale will be adjusted in order to preserve the aspect ratio defined in the code.
The viewBox attribute has a sidekick, preserveAspectRatio.I was recently asked to make a single-page web app for a digital illustrator. The app was pretty standard but they asked a unique request. Instead, they wanted me to dynamically store and deliver SVG data from a database. Think, Base64 images but for vector-based artwork. On the database side, it's nothing to complex. I chose Firebase as my real-time backend but the rest of this entry will show you a few different ways on how to render SVG using Angular.
This method uses experimental support for decorators. The Angular Cli will tell you that it's experimental and may change. This method works best if you have a static SVG file that you want to dynamically load.
The two methods above are ideal if you want to store the actual SVG data within a database. For Developers Angular Firebase. By Chris Mendez On June 17, - 4 min read. SVG Version: 6. HTML Place a div within your name. Install ng-inline-svg. You might also like. Next, complete checkout for full access to Chris Mendez. You've successfully signed in. Your account is fully activated, you now have access to all content.It adds events listeners for mouse scroll, double-click and pan, plus it optionally offers:.
If you're looking for version 2. If you found a bug or have a suggestion first check if there is a similar open or closed issue. If there are none then create a new one. If you solved a bug or implemented a feature that may be useful for others then you're welcome to create a pull request. If you have any other type of questions, problems, your code is not working or you want to critique the library - you can use StackOverflow. Just tag your question with svgpanzoom. Reference the svg-pan-zoom.
Then call the init method:. If beforeZoom will return false then zooming will be halted. That happens asynchronously from pan and zoom events. If any of this options are disabled - you still can zoom and pan via API. So if you set fit: true then contain 's value doesn't matter.
You may want to use a custom viewport if you have more layers in your SVG but you want to pan-zoom only one of them. Do not set any transform attributes to that element. It will make the library misbehave. If you need transform attribute for viewport better create a nested group element and set transforms to that element:. You can specify your own viewport selector by altering viewportSelector config value:. If you want to listen for user interaction events from a child SVG element then use eventsListenerElement option.
Amplify is a lightweight inline image zoom library that allows users to increase the size of images in their original positions.
I have seen this done when using context. Any suggestions? I can't find any additional data on ctx. Is this a utility method you added to the prototype? So inheritance is not affected. Skip to content. Instantly share code, notes, and snippets. Code Revisions 1 Stars Embed What would you like to do?
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Drag to pan. Click to zoom at that location. Shift-click to zoom out. PI ; return rotate. This comment has been minimized. Sign in to view. Copy link Quote reply.If you found a bug or have a suggestion first check if there is a similar open or closed issue.
If there are none then create a new one. Panzoom is a progressive plugin to create panning and zooming functionality for an element. This plugin depends only on jQuery. All dependencies on third party libraries other than jQuery are strictly optional. Also got rid of that white gap around chart and disabled hit test on the zoom box so it works right-to-left better. REAVIZ is a modular chart component library that leverages React natively for rendering the components while using D3js under the hood for calculations.
The library provides an easy way to get started creating charts without sacrificing customization ability. ImageViewTouch is an android ImageView widget with zoom and pan capabilities. This is an implementation of the ImageView widget used in the Gallery app of the Android opensource project. The module comes with some pre-configured options for things like colors, size, stroke etc.
Whenever an option isn't defined on a round-progress element, it's value will be taken from the defaults. An svg map component built with and for React. It allows the creation of pure react svg maps.
React-simple-maps aims to make working with svg maps in react easier. It handles tasks such as panning, zooming and simple rendering optimization, and takes advantage of parts of d3-geo and topojson-client instead of relying on the entire d3 library. Built with ng-packagr and conforming to the Angular Package Format. Hey there! We're glad you're here The TileView widget is a subclass of ViewGroup that provides a mechanism to asynchronously display tile-based images, with additional functionality for 2D dragging, flinging, pinch or double-tap to zoom, adding overlaying Views markersbuilt-in Hot Spot support, dynamic path drawing, multiple levels of detail, and support for any relative positioning or coordinate system.
The dark mode beta is finally here. Change your preferences any time. Stack Overflow for Teams is a private, secure spot for you and your coworkers to find and share information. I have used svg-pan-zoom 3. Learn more. How to use svg-pan-zoom library with Angular4? Ask Question. Asked 2 years, 6 months ago.
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