Graph-Easy-As_svg

Changes for version 0.24 - 2017-04-03

Convert from Module-Install to Dist-Zilla and did some cleanups.
- Hopefully fix https://rt.cpan.org/Public/Bug/Display.html?id=120889 ( Cannot install without '.' in @INC .)
- Now maintained at https://github.com/shlomif/Graph-Easy-As_svg .
2008-05-22 v0.23 Tels 137 tests - Fix, fix, fix, fix the bugs...
- require Graph::Easy v0.63 (for correct graph attribute output)
- suppress attributes without "-" (like "labelpos" vs. "label-pos")
- output the "font-family" style to support the "font" attribute
- center graph when the graph label is wider than the graph itself
- shift graph by half the border with down and right to prevent the border from getting cut off
- don't draw end arrows on undirected edges (with more than one cell)
- "rounded" nodes have their corners correctly filled with the background color (f.i. when inside a group) (Thanx Dieter Wunderer!)
- quote "&" in links (Thanx Emmanuel Quevillon!)
- links on edge labels were missing (Thanx Emmanuel Quevillon!)
- tweak width of digits to create more fitting labels (Thanx Emmanuel Quevillon!)
- better text for labels (alignment and tweaks) (Thanx Emmanuel Quevillon!)
2008-03-30 v0.22 Tels 127 tests
- require Graph::Easy v0.62
- remove Build.PL (bundle Module::Install 0.71)
- fix class attribute set on primary class, this colors all nodes red: node { class: red; } node.red { color: red; }
- amend INSTALL
- don't needlessly output polygon points in comments
- fix suppression of attributes (included all the added ones)
- fix support for point-style/point-shape
- anonymous nodes:
  - fix comment
  - fix misplacement
- fix multi-line labels (Thanx Amanda B. Hickman!)
  - multi-line graph labels no longer cross into content
  - render alignments like \r,\l etc. properly
  - remove escapes (like \l etc.) from title for a better title-tag
- better rendering of open/filled stars
- a set fontsize on the graph no longer affacts nodes/edges/groups
- filled arrows fall back to the edge color (instead of inherit) if the fill attribute is not set
2006-12-17 v0.21 Tels 93 tests
- require Graph::Easy v0.50
- fixes for the changes attribute system in Graph::Easy v0.50
- fix alignment of node labels under align: left, align: right etc.
- don't output needless things like 'fill=""' or default text-anchor
- handle borderwidths like "20px" and "2em"
2006-09-03 v0.20 Tels 89 tests
- require Graph::Easy v0.47
- fix invalid output on multi-line aligned labels
- fix alignment of labels on loops and vertical edges (text-align takes "start" or "end", not "left" or "right" - duh!)
- correct the placement of multi-line node labels, especially when using \r, \l or \c instead of \n
- fix warning and missing arrows when using edge { arrow-style: open; }
- fix undef warning when using closed arrows
- fix problem with dasharrays when using groups
2006-08-13 v0.19 Tels 89 tests - Fix, fix, fix, fix the bugs...
- single-line labels were not properly quoted (for "<>&)
- add encoding="UTF-8" to XML header to make encoding explicit
- require Graph::Easy v0.46
- require Image::Info v1.22
- add a Build.PL file
- add support for color schemes
- fix for very wide borders:
  - make dash:dot ratio 3:1 vs. 2:1
  - don't include "stroke-linecap: round" for diamon shapes
  - scale the dasharray according to stroke-width
- remove the workaround for Firefox bug with links:
  - it works now in the latest Firefox, so upgrade!
  - In the newest Firefox, it spawned a second new window
2006-04-17 v0.18 Tels 87 tests
- require Graph::Easy v0.44
- require Image::Info v1.20
- don't output empty <text...></text> tags
- _svg_background() returns SVG code instead of modifying $$svg
- don't draw borders on Group::Cells
- fix background color for edges and invisible nodes inside groups
- fix alignment for labels
- size-correction for overly big arrows now also works for vertical edges
- close the hole in open arrows on bold/broad/wide edges
- edge corners no longer have holes
- close the gaps on edges with style double
- fix the fontsize (was missing a "px") and also use 16 as the base vs. 14 This makes the text independed from the user setting in the browser, and also increases it to be more readable.
- always include the fill, to help renderers that can't cope with CSS styles
- fix rendering of multiline labels:
  - lineheight is 18px vs 1em to not have the lines drawn together
  - no longer contain a spurious empty last <tspan>-pair
- reorder output order of elements: first groups, then nodes, then edges
- correct the displacement on edge end/start points for wide/broad/bold edges
- render selfloops with paths
- don't render invisible edges
- a set background on edge cells did have a stray border
- edge labels have a 80% font-size as default
- only add 0.5EM (currently 8 pixels) as padding around the graph (was 14)
- add a few characters to make the _text_length() calculation more accurate
- a Node::Empty should not be rendered
- font is really font-family in CSS section
- support point-shaped nodes with point-style: invisible
2006-01-29 v0.17 Tels 73 tests
- use Module::Install (and bundle it)
- require Graph::Easy v0.40
- require Image::Info v1.17 (for nodes with "shape: img")
- fix VERSION in packages as to not conflict with the ones from Graph::Easy
- add support for:
  - invisible edges
  - nodes with "shape: img" (Thanx to Jeff Schiller for pointing out svg:image!)
- add an onclick-handler to links to force them to open in the current window/tab - work around bug in FF 1.5 (Thanx Jeff Schiller again!)
- put the link around the node shape, not just the text. Makes it easier to hit the link.
- nodes with shape: point get a link, too (although the area is tiny)
2006-01-01 v0.16 Tels 72 tests
- require Graph::Easy v0.38
- use $self->angle() to get the correct shape rotation
- forgot to limit precision on some edge-line coordinates
2005-12-18 v0.15 Tels 72 tests
- require Graph::Easy v0.36
- fix edge crossings with different widths (wide vs. broad etc)
- add rendering of edge joints
2005-12-10 v0.14 Tels 72 tests
- require Graph::Easy v0.35
- quote "&", "<", ">" and '"' in links and titles (Thanx Mutante!)
- add "xlink:show" and "xlink:target" on links to open them in a new window (but Firefox ignores this anyway, see mozilla bug #315389)
2005-12-04 v0.13 Tels 72 tests
- require Graph::Easy v0.34
- handle multi-celled nodes
- better support labels on vertical edges
- fix unitialized warning in line 298
- use strict; in Makefile.PL
- support svg_info fields (mainly for wikipedia SVG integration)
2005-11-13 v0.12 Tels 64 tests
- require Graph::Easy v0.33
- add PREREQ_FATAL to Makefile.PL
- support bold-dash, broad and wide edge/border styles
- correct node-sizes to accomodate border-width
- shorten edge-pieces with labels a bit
- implement a crude version of _text_length(), returning the text length in pixels depending on EM and the string content ("WW" vs. "ii"). This stops nodes from being overly broad with lots of padding.
- don't generate invalid SVG on labels/node names with "--", "&", "<" or ">"
- limit precision on edge-lines and arrows to 2 digits (instead of 4)
2005-11-06 v0.11 Tels 56 tests
- limit precision to 2 digits (instead of 4) for coordinates
- put common attributes on double-border shapes into a <g> to shorten output
- indent output by ' ' instead of ' ' to shorten it a bit
- support "rotate" attribute on Nodes
2005-10-30 v0.10 Tels 56 tests
- require Graph::Easy v0.31
- don't draw background if bg eq ''
- add support for attribute "font-size"
- add support for attribute "text-style"
- calculate the correct size for edge cells with a label
- include xmlns:xlink too, to make Firefox 1.5x happy
- include version of Graph::Easy::As_svg in output, too
- for edge labels: fallback to the color of the edge did not work
- triangle-shaped nodes have equal height/width (if possible)
- the "autolink" and "link" attributes correctly create links with mouseover titles
- nodes with shape "none" result no longer in invalid SVG
- only include the actually used defitinons, that shortens the output, especially for small graphs
- don't need to output "stroke-width" for including arrow heads, this shortens the output a bit
- shorten output by grouping multiple lines of an edge together
- text in (invert)-triangle etc nodes is better displaced to fit better
- better rendering of multi-line labels on edges
- support multi-line labels on nodes (correct hight, multi-line text)
- output fontsize is 14 pixels instead of 11 (for bigger graphs in FF 1.5)
- close gaps in hor/ver edge pieces with style "double"
- examples/as_svg: input utf8 from STDIN, output utf-8 to STDOUT
- Nodes with "shape: rounded" are rounded by a fixed amount
- edge crossings with different styles and colors are now rendered correctly
- output a title for the SVG graph
- output "width" and "height" instead of viewbox on <svg> for Firefox 1.5
- render the graph label with label-pos bottom or top, incl. optional link
2005-09-23 v0.09 Tels 41 tests
- require Graph::Easy v0.30
- fix README
- fix SVG header (standlone="yes", xmlns for <svg tag)
2005-09-18 v0.08 Tels 40 tests
- require Graph::Easy v0.29
- 'fill' defaults to white
- edge labels use "label-color" and fall back to "color"
- improve support for multi-line labels
- fix bidirectional edges (render their arrows correctly)
- better center the text on triangle|invtriangel shaped nodes
- better node sizes for the various shapes
- draw graph background, border and label if nec.
- double lines on edges are rendered better at the arrow-ends
- add support for the following node shapes:
  - invhouse, octagon, hexagon, septagon, parallelogram, trapezium
- draw background for non-rect nodes
- correctly draw "border-style: double" on the various node shapes
- draw backgrounds for edge cells (for groups and when background is set)
- add tests for POD via Test::POD (t/pod.t)
- add tests for POD coverage via Test::POD::Coverage (t/pod_cov.t)
2005-09-04 v0.07 Tels 38 tests
- require Graph::Easy v0.27
- added tests for as_svg_file()
- fix rendering of edge cells to be compatible with new Graph::Easy code
- arrow lines on non-solid edges are now solid (instead of dashed etc)
- render the different arrow styles (closed, open, filled)
- render nodes with "shape: point"
- produce shorter code by using default attributes/classes better
- render node shapes: diamond, house, triangle, invtriangle
- render edge style "double-dash"
- "fill" is the fill color, "background" the background
- better skipping of non-SVG attributes
2005-07-13 v0.06 Tels 31 tests
- require Graph::Easy v0.22
- As_svg: use Graph::Easy to allow a require w/o Graph::Easy
Seperated Graph::Easy::As_svg from Graph::Easy:
2005-06-25 v0.05 Tels 31 tests
- Much more complete: output class attributes, stylesheets etc.
- generate SVG 1.1
- use "stroke-linecap: round" to generate nicer arrow heads
- shorten output by using a few tricks
- render node borders in different styles (dotted etc)
- render edge lines in different styles (dotted etc)
For older CHANGES, please see the Graph::Easy package.