I am working on an application where I need to display color coded indicators. The standard colors will be red/amber/green, but I need to be able to pick any color (e.g. by hex value). The colors are updated dynamically by a script, based on data (dashboard style).
Are there libraries that could help me? I am thinking in particular about using svg or canvas graphics that the script could modify.
Note: the question has been rephrased to better explain the context.
I like this collection on WikiCommons. They are in SVG
http://commons.wikimedia.org/wiki/Tango_icons
Here are a couple of links to start with:
nounproject
openiconlibrary
openclipart
small iconset for use with raphaël
Related
he following banner is an example of what i want:
https://top.gg/api/widget/535064930727100427.svg
https://top.gg/api/widget/698275428976164945.svg
It's automatically generated and contains dynamic text which causes the "background color" to automatically adjust its size to it as well as have a border radius.
The text and shapes are all paths when I look at the source.
I would like to know how this has been accomplished as SVG itself does not support a dynamic border radius and background color by default.
Somewhere in the SVG source of the links above it showsid="surface19" and I did some research to see what piece of software or library provides such ID's. The text also seems to automatically be converted to paths, so it's not a hand-written SVG that gets modified programmatically from what it seems.
I did a lot of research before asking this question.
is it possible to create a stroke with a dynamic width with SVG? I want to achieve a Calligraphy look like here, here or here.
Is this even possible? It seems customization of strokes in SVG is fairly limited. Even gradients in strokes seem to be non-trivial (see here).
There is a proposal to add into SVG standard a mechanism, that does exactly what you want:
http://www.w3.org/Graphics/SVG/WG/wiki/Proposals/Variable_width_stroke
http://lists.w3.org/Archives/Public/www-svg/2013May/0041.html
There's even an example implementation available here:
https://rawgit.com/birtles/curvy/master/index.html
It is, however, by no means official and we cannot be even sure it'll ever be.
Until then you'll need to stick to Bezier curves and object filling:
You can also use calligraphic fonts, for example - Tangerine available on Google CDN:
This approach requires less work since you don't need to draw everything from scratch, but then again, using third party fonts leaves you with little control over the final result.
You can't dynamically adjust the stroke of a path element. However you could draw a path, use a fill color on it instead of stroke, then double back upon the letters at a slight distance away from the original line.
Also, if you are using the SVG on the web then you can use css fonts on text elements. There are some pretty good cursive fonts that you can use for free... just check google web fonts.
I'm trying to understand how Paperjs works and I would like to know if it's possible to write text vectors, if yes how?
I tried Raphael.js before this, and I was almost satisfied with it but it seems that Paperjs is more (cross)browser compliant for some reasons, right?
Some examples would be nice!
Thanks for your answers.
Yes, it is definitely possible to create texts in paper.js.
var awesometext = new paper.PointText();
awesometext.content='awesome';
paper is better than raphael because its canvas based. Canvas is better supported on mobiles/tabs and hence the advantage of paperjs. However, since canvas is just a bitmap implementation, zooming will make canvas renderings not so good compared to svg renderings like in raphael.
So, it depends on what your priorities are for your application..
Paperjs handles text-scaling well, but it uses canvas' native methods to render the characters, so you can't access the vector data once they're drawn. But I imagine you'd only want vector characters to manipulate their shape, for example, morphing one letter into another, or creating a font editor.
If you just want hi res text then paperjs can do that no problem... or you could just set a bigger font size.
If you want to render text as vectors in paperjs, have a look at https://nodebox.github.io/opentype.js/
I was casting around for a solution for to another question I had ( Stretch text in inkscape, but then wrap it to a path ) and I wondered if it was possible to easily and programmatically make one font from another? As a concrete example, can I take FreeSerif font, double its height, and produce another font, calling it FreeSkinnySerif? (I could then use FreeSkinnySerif in Inkscape and get the effect I'm after.)
FontForge Scripting might work for you, in particular scale. I suggest trying out the command in the GUI first, than create the script.
I don't know about a scripting solution, but have you tried the SVG Font editor that is built in to Inkscape?
Text->SVG Font Editor.
I guess that you could make a python script that used it somehow, but simply using the tool from inkscape would probably bee faster.
Here is a tutorial.
I am trying to make a tool for my website which traces over Japanese characters, showing the stroke order etc.. something like this: http://www.chinesehideout.com/tools/strokeorder.php?c=5pel
I have made a bunch of SVG files in inkscape, which are made up of just curves, one for each stroke of the character. I have then imported these into Raphael using the raphael-svg-import: https://github.com/wout/raphael-svg-import
The SVGs are displaying perfectly, however I want to animate them.
My question is: Is there a way to take each path from the SVG in turn in Raphael, and then animate/stroke them? If so..how??
If you need any more info please say!
Thanks
EDIT: Perhaps I should clarify, when I say stroke I mean progressively draw the line, starting from the first point and ending at the last. At the moment it draws all paths simultaneously and draws the whole of each path at once.
The technique people use in svg for doing this is outlined in this answer. It's probably possible to adapt that to Raphaël, though the Raphaël documentation doesn't list stroke-dashoffset.
Raphaël has a method Element.getSubpath(from, to) that can be used to get only part of a path, that should probably also be an option.