Adding upstream version 1.0.2.upstream/1.0.2upstream

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>

1 files changed, 105 insertions, 0 deletions

diff --git a/share/extensions/svgfont2layers.py b/share/extensions/svgfont2layers.py
new file mode 100755
index 0000000..49c827f
--- /dev/null
+++ b/share/extensions/svgfont2layers.py
@@ -0,0 +1,105 @@
+#!/usr/bin/env python
+# coding=utf-8
+#
+# Copyright (C) 2011 Felipe Correa da Silva Sanches <juca@members.fsf.org>
+#
+# 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., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301, USA.
+#
+"""Extension for converting svg fonts to layers"""
+
+import inkex
+
+class SvgFontToLayers(inkex.EffectExtension):
+    """Convert an svg font to layers"""
+    def add_arguments(self, pars):
+        pars.add_argument("--count", type=int, default=30,\
+            help="Stop making layers after this number of glyphs.")
+
+    def flip_cordinate_system(self, elem, emsize, baseline):
+        """Scale and translate the element's path, returns the path object"""
+        path = elem.path
+        path.scale(1, -1, inplace=True)
+        path.translate(0, int(emsize) - int(baseline), inplace=True)
+        return path
+
+    def effect(self):
+        # TODO: detect files with multiple svg fonts declared.
+        # Current code only reads the first svgfont instance
+        font = self.svg.defs.findone('svg:font')
+        if font is None:
+            return inkex.errormsg("There are no svg fonts")
+        #setwidth = font.get("horiz-adv-x")
+        baseline = font.get("horiz-origin-y")
+        if baseline is None:
+            baseline = 0
+
+        fontface = font.findone('svg:font-face')
+
+        # TODO: where should we save the font family name?
+        # fontfamily = fontface.get("font-family")
+        emsize = fontface.get("units-per-em")
+
+        # TODO: should we guarantee that <svg:font horiz-adv-x> equals <svg:font-face units-per-em> ?
+        caps = int(fontface.get("cap-height", 0))
+        xheight = int(fontface.get("x-height", 0))
+        ascender = int(fontface.get("ascent", 0))
+        descender = int(fontface.get("descent", 0))
+
+        self.svg.set("width", emsize)
+        self.svg.namedview.new_guide(baseline, True, "baseline")
+        self.svg.namedview.new_guide(baseline + ascender, True, "ascender")
+        self.svg.namedview.new_guide(baseline + caps, True, "caps")
+        self.svg.namedview.new_guide(baseline + xheight, True, "xheight")
+        self.svg.namedview.new_guide(baseline - descender, True, "decender")
+
+        # TODO: missing-glyph
+        count = 0
+        for glyph in font.findall('svg:glyph'):
+            unicode_char = glyph.get("unicode")
+            if unicode_char is None:
+                continue
+
+            layer = self.svg.add(inkex.Layer.new("GlyphLayer-" + unicode_char))
+            # glyph layers (except the first one) are innitially hidden
+            if count != 0:
+                layer.style['display'] = 'none'
+
+            ############################
+            # Option 1:
+            # Using clone (svg:use) as childnode of svg:glyph
+
+            # use = self.get_or_create(glyph, inkex.Use())
+            # use.href = group
+            # TODO: This code creates <use> nodes but they do not render on svg fonts dialog. why?
+
+            ############################
+            # Option 2:
+            # Using svg:paths as childnodes of svg:glyph
+            for elem in glyph.findall('svg:path'):
+                new_path = layer.add(inkex.PathElement())
+                new_path.path = self.flip_cordinate_system(elem, emsize, baseline)
+
+            ############################
+            # Option 3:
+            # Using curve description in d attribute of svg:glyph
+            path = layer.add(inkex.PathElement())
+            path.path = self.flip_cordinate_system(glyph, emsize, baseline)
+
+            count += 1
+            if count >= self.options.count:
+                break
+
+if __name__ == '__main__':
+    SvgFontToLayers().run()