October 2015
Intermediate to advanced
232 pages
5h 1m
English
Content preview from SVG Text Layout
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Chapter 6. Casting Anchor
Every modern word processor has the option to left-align, right-align, center, or justify text. CSS text layout uses the text-align property to choose between these options for positioning text within the layout box.
For CSS or word processors, the page layout defines margins on either side of the text region. Alignment settings determine how extra whitespace is shifted within this space: accumulating on one side or the other, divided evenly on either side, or distributed in between words.
In SVG, there are no margins and no boxes. Each line of text is just as long as it needs to be. As we have seen, it might not even be a straight line. SVG does provide tools to center or right-align text. The options, however, are not as straightforward as the text-align property.
Start, Middle, or End
SVG text alignment is controlled by the text-anchor property. The point you specify with x and y is the anchor point for that span of text, and text-anchor controls whether this point is positioned at the start, middle, or end of the span.
The default for text-anchor is start. Other values (end or middle) can be specified as a presentation attribute or via CSS.
Tip
The text-anchor property is inherited, so it can be set once for the entire SVG if desired.
Example 6-1 displays three strings, with the same horizontal position but different text-anchor values; Figure 6-1 shows the result. A vertical guideline marks the x position used to anchor all the text elements.
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O’Reilly covers everything we've got, with content to help us build a world-class technology community, upgrade the capabilities and competencies of our teams, and improve overall team performance as well as their engagement.Julian F.
I wanted to learn C and C++, but it didn't click for me until I picked up an O'Reilly book. When I went on the O’Reilly platform, I was astonished to find all the books there, plus live events and sandboxes so you could play around with the technology.Addison B.
I’ve been on the O’Reilly platform for more than eight years. I use a couple of learning platforms, but I'm on O'Reilly more than anybody else. When you're there, you start learning. I'm never disappointed.Amir M.
I'm always learning. So when I got on to O'Reilly, I was like a kid in a candy store. There are playlists. There are answers. There's on-demand training. It's worth its weight in gold, in terms of what it allows me to do.