I'm new to svg and raphael.js. My task is to make an interactive graph--the user clicks/touches a line and space opens to show some text elements. I have this working but the line is a very small target.
Is there a way to have the user click the bounding box instead of the path? I see getBBox() but don't see how I could use this for that purpose.
One thing you could do is clone your path, push it back behind the line your interested in, change the attributes so that it's much thicker, and almost entirely transparent, and put your event handlers on this line.
Something like this
You'll have to clean it up of course...
Draw a thik line of the same background color behind this line and use that as the target.
You can use pointer-events="boundingBox" on the element you want to capture mouseevents on. See the SVG Tiny 1.2 spec.
Here's an example.
Unfortunately I don't think most browsers support it yet. Opera does though.
Related
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 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.
I would like to take a multiline block of text and display it in SVG. I would like to keep the lines as lines. Is there a proper way to do this?
I am using Inkscape for my base drawing and Batik for my rendering. It seems the two do not agree on how to do this.
Inkscape is creating a structure like this:
<flowRoot
xml:space="preserve"
id="flowRoot3089"
style="font-size:16px;font-style:normal;font-weight:normal;line-height:125%;letter-spacing:0px;word-spacing:0px;fill:#000000;fill-opacity:1;stroke:none;font-family:Sans"
transform="translate(19.71875,334.88681)">
<flowRegion id="flowRegion3091">
<rect id="rect3093" width="50.78125" height="75" x="34.765625" y="155.89932"/>
</flowRegion>
<flowPara id="flowPara3123">Item 1</flowPara>
<flowPara id="flowPara3137">Item 2</flowPara>
<flowPara id="flowPara3139">Item 3</flowPara>
</flowRoot>
However, this is not acceptable to Batik for some reason.
Inkscape sets the SVG version of the document to 1.1 instead of 1.2, but still uses flowing text.
The simple solution for you is to edit your svg document and change the SVG version attribute to 1.2. Inkscape will not change it back to 1.1 and it handles the 1.2 version specifier fine.
Batik will then be happy to provide most functionality, however you'll also run into another Inkscape bug if you mess with pretty much any of the text attributes within the flow root that Inkscape creates. It sets the background color to the selected foreground color for the text, which means if you set the text color to red in Inkscape, when batik renders it, you'll see a red square ... the text is there, but its red too, so not really visible. This an Inkscape bug and is clearly visible in the code for the flowRegion -> rect element.
The solution is to manually edit your flowRect attributes after tweaking them with inkscape.
Batik also seems to do better if you use the standard svg output rather than inkscape svg output.
This is not acceptable since flow* elements are non-standard elements. It comes from an SVG1.2 draft that has never been accepted and it is designed to wrap text in custom shapes. Only Inkscape and some builds of Opera support it. So, don't use it, at least for the moment.
If you don't need text wrapping (and you don't seem to, but I don't understand what you mean by "I would like to keep the lines as lines"), I suggest you use the basic <text/> element.
I'd suggest <text> with <tspan> children. Inkscape can generate that for you quite easily, just don't click and drag an area but instead just click where you want the text and start writing, press return where you want a new line.
Alternatively, foreignObject will allow you to include html:
<svg:foreignObject><html:body><div>text here</html:div></html:body></svg:foreignObject>
Doesn't seem to work in Opera or IE, though.
I'm using LaTeX and I would like to have vertical rule along left side of page, topmargin to bottommargin, 0.5in from the left edge of the page. I want this on every page, so I assume that means it must somehow be tied to the header or the footer?
I've made no progress at all, so I need help with (1) making the full-length rule itself and (2) making it happen automatically on every page of the document.
Can someone tell me how to do that?
I got a working answer to my question on the Latex Community forum: http://www.latex-community.org/forum/viewtopic.php?f=5&t=9072&p=34877#p34877
The answer I got uses the 'Background' package and this code:
\documentclass{article}
\usepackage{background}
\usepackage{lipsum}% just to generate filler text for the example
\SetBgScale{1}
\SetBgAngle{0}
\SetBgColor{black}
\SetBgContents{\rule{.4pt}{\paperheight}}
\SetBgHshift{-9cm}
\begin{document}
\lipsum[1-90]
\end{document}
Works great and was easy to adjust to put one vrule in left margin area and one in the right margin area.
There could be a LaTeX package to do this for you, but I'm more of a TeX person, so I tried to come up with a TeX solution (not always the best idea to mix plain TeX with LaTeX but I think I have it working).
Try this. Box 255 is the box register that TeX places the page contents into before the page is output. What I've done is taken the existing output routine, and changed it to insert into box 255: a 0-height, 0-width infinitely shrinkable-but-overflowing set of boxes containing a rule that is the height of the page, 0.4pt thick and with any luck, half an inch away into the left. The existing contents of box 255 is then added after this rule. Then I call the previous output routine which outputs the page (which now includes a rule), and also the headers and footers.
\newtoks\oldoutput
\oldoutput=\expandafter{\the\output}%
\output{%
\setbox255\vbox to 0pt{%
\hbox to 0pt{%
\vsize\ht255%
\vbox to \ht255{%
\vss
\hbox to -0.5in{%
\hss
\vrule height \ht255 width 0.4pt%
}%
}\hss
}\vss
\box255%
}%
\the\oldoutput
}%
Put it before your \begin{document} command. This might not solve your problem completely, but hopefully it should get you started. Here's a great page for learning about TeX primitives and built-in things.
Have a look at the eso-pic package. From memory, what you want would look like this:
\AddToShipoutPicture{%
\setlength\unitlength{1in}%
\AtPageUpperLeft{%
\put(0.5,\topmargin){\vrule width .5pt height \textheight}%
}%
}
It's not clear in your question if you want the line to span the text area or the whole paper height. Depending on the case, you have to replace \topmargin and \textheight by the correct values, either 0pt or whatever your top margin is, or by \paperheight. See the geometry package if you don't already use it for how to control those dimensions.