I'm looking for a way to skew a tspan with transform="skewX(-45)", but it only seems to work on the parent text as a whole. The problem is a want surrounding tspans to be unaffected by the skew, only the middle one. The reason I don't want to use multiple texts is that I want the flow calculations to be done for me instead of me positioning the texts manually (so future font change doesn't throw the text flow off). I also need the following text spans to be flown with respect to the width of the slanted text span, not the original one.
Is there a way to apply transform to a tspan only or can this be done with multiple texts while preserving the text flow?
Per ccprog's comment, there are some rendering issues / complications with using transforms on <tspan>.
Here are the available attributes on <tspan>:
You might be able to fit your needs by combining rotate, dx, & dy to various effects. Some people have had luck wrapping the <text> element inside of an <a> as it does allow transform.
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I have a variable-width container (screen width) and fixed left and right margins. Remaining area gives me a constraint for maximum text width, where I'm placing text of variable content (multiple languages). I want text to fit into that width without truncation, wrapping if needed. Text is relatively short - it may fit into single line, likely to fit into 2 lines and will fit into 3 lines for sure.
I want to avoid cases like (2) - where text wraps into long and a short line. It does not look nice. Instead I would like it to wrap more evenly, like in case (3).
For the demo purposes I've hardcoded hand-picked margins, but I want solution to work automatically for any text content and any container width.
Is it achievable using built-in Flutter widgets, or I need to implement something custom, similar to https://pub.dartlang.org/packages/auto_size_text?
I would like to generate some diagram style graphics using SVG and use text in the diagrams. My problem is, how to know the size of the text in advance to be able to adjust the rest of the layout accordingly. To make this explicit: I'm not talking about SVG in a browser. I would like to work with fixed units and generate PDF for printing for example. So if I use a 12pt font, it should also be printed as 12pt font.
To have a more concrete example: Lets assume I have the three strings "bla", "blablub" and "blubblablub". I would like to print them in a given 12pt font, determine the string size and enclosing boxes and draw the biggest sized box around all of them. The idea is to have equally sized boxed around all, based on the longest text.
Could somebody give me a hint how to do that or why it is not possible? Searching for this topic, I only get some JavaScript tricks in the browser, which usually involves rendering the text and then re-rendering everything again.
Is there a nice and easy way to to have the functionality of lengthAdjust (together with textLength) for shrinking text if necessary (if too wide) but never attempting to stretch it?
Two possible solutions for a SVG generated through JS come to my mind:
Count characters (or rather grapheme clusters) and based on that (together with some heuristics unless a fixed-width size font is used) determine whether to set textLength or not.
First do it without textLength set and then determine using getBBox() whether the text needs some shrinking in which case textLength will be set.
Both solutions are IMHO quite ugly (and possibly buggy from my recollections of past encounters with getBBox()). Is there maybe some nicer solution I missed?
Have a look at this: https://stackoverflow.com/a/39886640/1925631
Essentially, make a path which spans the exact coordinates where you want to spread your text on a path. Measure this path. Then, measure how many pixels your text requires, with a font-size of 1px (and other desired font-features). Now adjust the font-size to fill your desired percentage of the available path advance width. Adjust start-offset and text-anchor. Now finally calculate your author specified textLength and choose a lengthAdjust value to get exact alignment on low precision / non-conformant renderers.
Finally, if you need to support viewers without text on a path rendering support, you can use a conformant viewer with javascript support to create a backwards compatible/fallback version. Render the content and use the SVG DOM api to fetch the x, y and rotate values for each character/glyph, now create a new SVG DOM representation with those attributes specified. You might need javascript to calculate absolute width and height for the root svg element as well, and a correctly specified viewBox, and cascade/resolve/convert all css selectors/rules/properties to inline attributes. But this way you can get cross-platform, cross-browser/viewer rendering of text, with a single compilation step per immutable source file version.
I've also made a gist to ease the last step, of resolving the css and removing all classNames, while preserving the rendered end-result: https://gist.github.com/msand/4b37d3ce04246f83cb28fdbfe4716ecc
This is for the purpose of a single universal svg + javascript codebase, and web+ios+android software development (based on react + react-native + react-native-svg)
Has anyone figured out a way to dynamically mutate text on the screen without triggering a render?
A large part of my screen utilizes setNativeProps for moving parts, meaning that the animations become lagged despite using shouldComponentUpdate. I would like to use the Text tag instead of the TextInput tag workaround suggested in this post for stylistic reasons.
Best case scenario is a workaround that involves setNaiveProps as it would follow the pattern of the rest of the screen; however, I currently plan to render all the numbers 0-9 on the screen an move them into place at the moment, so any help would be greatly appreciated!
As it turns out, you can actually format TextInputs the same exact way as Text elements (from what I have tested). For placing text horizontally, you have to set the width (something I had trouble with before). For those still interested in the original question however, you can nest TextInputs inside of a Text Element (one per text element because there is no justification and it automatically places them in a row). Styling applied to the Text Element will apply to the TextInput.
I'm currently in the process of drawing a logo in SVG.
The logo drawing is perfectly fine, however I want to apply a filter to my shapes. Now the letters in the logotype are made up of separate shapes.
My question is how do I best combine said shapes into one resultant shape? I've found some things about feBlend and veUnion but information is scattered and sparse and these are my first steps into the wonderful world of SVG.
Besides unioning two shapes into one before applying my filter I'd also want (in the case of my example the n in the word qabana) to subtract certain shapes from a shape before applying my filter.
Example of the SVG I am working on: http://buffer.io/~simon/qabana-svg/handmade-stackoverflow.svg (this should immediately show you the issues I'm having).
Also, any bonus tips on how to improve my SVG in that file are gladly heard.
veUnion isn't implemented in any browser at this point in time. If you want to merge two or more shapes to a single path you can use a vector graphics editor (e.g Inkscape or Illustrator). If you want to group elements, use a <g> element, and apply the filter to that instead.