Extension that generates an SVGFont from a set of layers with id="GlyphLayer-<unicode char>"

(bzr r10214)

3 files changed, 120 insertions, 0 deletions

diff --git a/share/extensions/Makefile.am b/share/extensions/Makefile.am
index 4beb0e663..a4d41b836 100644
--- a/share/extensions/Makefile.am
+++ b/share/extensions/Makefile.am
@@ -95,6 +95,7 @@ extensions = \
 	jessyInk_video.py \
 	jessyInk_view.py \
 	launch_webbrowser.py \
+	layers2svgfont.py \
 	lindenmayer.py \
 	lorem_ipsum.py \
 	markers_strokepaint.py \
@@ -265,6 +266,7 @@ modules = \
 	jessyInk_uninstall.inx \
 	jessyInk_video.inx \
 	jessyInk_view.inx \
+	layers2svgfont.inx \
 	lindenmayer.inx \
 	lorem_ipsum.inx \
 	markers_strokepaint.inx \
diff --git a/share/extensions/layers2svgfont.inx b/share/extensions/layers2svgfont.inx
new file mode 100644
index 000000000..06b0a9a67
--- /dev/null
+++ b/share/extensions/layers2svgfont.inx
@@ -0,0 +1,16 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<inkscape-extension xmlns="http://www.inkscape.org/namespace/inkscape/extension">
+  <_name>Convert Glyph Layers to SVG Font</_name>
+  <id>org.inkscape.typography.layers2svgfont</id>
+  <dependency type="executable" location="extensions">inkex.py</dependency>
+  <dependency type="executable" location="extensions">layers2svgfont.py</dependency>
+  <effect>
+    <object-type>all</object-type>
+    <effects-menu>
+      <submenu _name="Typography"/>
+    </effects-menu>
+  </effect>
+  <script>
+    <command reldir="extensions" interpreter="python">layers2svgfont.py</command>
+  </script>
+</inkscape-extension>
diff --git a/share/extensions/layers2svgfont.py b/share/extensions/layers2svgfont.py
new file mode 100644
index 000000000..b53cf241c
--- /dev/null
+++ b/share/extensions/layers2svgfont.py
@@ -0,0 +1,102 @@
+'''
+Copyright (C) 2011 Felipe Correa da Silva Sanches
+
+This program is free software; you can redistribute it and/or modify
+it under the terms of the GNU General Public License as published by
+the Free Software Foundation; either version 2 of the License, or
+(at your option) any later version.
+
+This program is distributed in the hope that it will be useful,
+but WITHOUT ANY WARRANTY; without even the implied warranty of
+MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+GNU General Public License for more details.
+
+You should have received a copy of the GNU General Public License
+along with this program; if not, write to the Free Software
+Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
+'''
+
+import inkex
+import sys
+
+logfile = open("/tmp/inkscape-ext-logfile", "wa")
+def LOG(s):
+	logfile.write(s+"\n")
+
+class Layers2SVGFont(inkex.Effect):
+	def __init__(self):
+		inkex.Effect.__init__(self)
+
+	def guideline_value(self, label, index):
+		namedview = self.svg.find(inkex.addNS('namedview', 'sodipodi'))
+		guides = namedview.findall(inkex.addNS('guide', 'sodipodi'))
+		for guide in guides:
+			l=guide.get(inkex.addNS('label', 'inkscape'))
+			if l==label:
+				return int(guide.get("position").split(",")[index])
+		return 0
+
+	def get_or_create(self, parentnode, nodetype):
+		node = parentnode.find(nodetype)
+		if node is None:
+			node = inkex.etree.SubElement(parentnode, nodetype)
+		return node
+
+	def get_or_create_glyph(self, font, unicode_char):
+		glyphs = font.findall(inkex.addNS('glyph', 'svg'))
+		for glyph in glyphs:
+			if unicode_char == glyph.get("unicode"):
+				return glyph
+		return inkex.etree.SubElement(font, inkex.addNS('glyph', 'svg'))	
+
+	def effect(self):
+		# Get access to main SVG document element
+		self.svg = self.document.getroot()
+		self.defs = self.get_or_create(self.svg, inkex.addNS('defs', 'svg'))
+
+		setwidth = int(self.svg.get("width"))
+		baseline = self.guideline_value("baseline", 1)
+		ascender = self.guideline_value("ascender", 1) - baseline
+		caps = self.guideline_value("caps", 1) - baseline
+		xheight = self.guideline_value("xheight", 1) - baseline
+		descender = self.guideline_value("descender", 1) - baseline
+		lbearing = self.guideline_value("lbearing", 0)
+		rbearing = setwidth - self.guideline_value("rbearing", 0)
+
+		LOG("setwidth: " + str(setwidth))
+		LOG("baseline: " + str(baseline))
+		LOG("ascender: " + str(ascender))
+		LOG("descender: " + str(descender))
+		LOG("caps: " + str(caps))
+		LOG("xheight: " + str(xheight))
+		LOG("lbearing: " + str(lbearing))
+		LOG("rbearing: " + str(rbearing))
+
+		font = self.get_or_create(self.defs, inkex.addNS('font', 'svg'))
+		font.set("horiz-adv-x", str(setwidth))
+
+		fontface = self.get_or_create(font, inkex.addNS('fontface', 'svg'))
+		fontface.set("units-per-em", str(setwidth))
+		fontface.set("cap-height", str(caps))
+		fontface.set("x-height", str(xheight))
+		fontface.set("ascent", str(ascender))
+		fontface.set("descent", str(descender))
+		#TODO: should we somehow store sidebearing values?
+
+		groups = self.svg.findall(inkex.addNS('g', 'svg'))
+		for group in groups:
+			label = group.get(inkex.addNS('label', 'inkscape'))
+			if "GlyphLayer-" in label:
+				unicode_char = label.split("GlyphLayer-")[1]
+				glyph = self.get_or_create_glyph(font, unicode_char)
+				glyph.set("unicode", unicode_char)
+				use = self.get_or_create(glyph, inkex.addNS('use', 'svg'))
+				use.set(inkex.addNS('href', 'xlink'), "#"+group.get("id"))
+				#TODO: This code creates nodes but they do not render on svg fonts dialog. why? 
+
+if __name__ == '__main__':
+	LOG("\n\n"+"*"*80+"\n\n")
+	e = Layers2SVGFont()
+	e.affect()
+	logfile.close()
+