Extensions. Import .dhw file. new code by Kevin Lindsey, Nikita Kitaev, Chris Morgan.

(bzr r10788)

3 files changed, 145 insertions, 0 deletions

diff --git a/share/extensions/Makefile.am b/share/extensions/Makefile.am
index e86852895..8718de825 100644
--- a/share/extensions/Makefile.am
+++ b/share/extensions/Makefile.am
@@ -44,6 +44,7 @@ extensions = \
 	cubicsuperpath.py \
 	dia2svg.sh \
 	dimension.py \
+	dm2svg.py \
 	dots.py \
 	draw_from_triangle.py \
 	dxf_input.py \
@@ -218,6 +219,7 @@ modules = \
 	color_rgbbarrel.inx\
 	color_replace.inx\
 	convert2dashes.inx\
+	dhw_input.inx \
 	dia.inx \
 	dimension.inx \
 	dots.inx \
diff --git a/share/extensions/dhw_input.inx b/share/extensions/dhw_input.inx
new file mode 100644
index 000000000..91b52ff9e
--- /dev/null
+++ b/share/extensions/dhw_input.inx
@@ -0,0 +1,15 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<inkscape-extension xmlns="http://www.inkscape.org/namespace/inkscape/extension">
+	<_name>DHW file input</_name>
+	<id>org.inkscape.input.dhw</id>
+	<dependency type="executable" location="extensions">dm2svg.py</dependency>
+	<input>
+		<extension>.dhw</extension>
+		<mimetype>application/x-extension-DHW</mimetype>
+		<_filetypename>ACECAD Digimemo File (.dhw)</_filetypename>
+		<_filetypetooltip>Open files from ACECAD Digimemo</_filetypetooltip>
+	</input>
+	<script>
+		<command reldir="extensions" interpreter="python">dm2svg.py</command>
+	</script>
+</inkscape-extension>
diff --git a/share/extensions/dm2svg.py b/share/extensions/dm2svg.py
new file mode 100644
index 000000000..908fedbad
--- /dev/null
+++ b/share/extensions/dm2svg.py
@@ -0,0 +1,128 @@
+#!/usr/bin/env python
+'''
+dm2svg.py - import a DHW file from ACECAD DigiMemo
+
+Copyright (C) 2009 Kevin Lindsey, https://github.com/thelonious/DM2SVG
+Copyright (C) 2011 Nikita Kitaev, https://github.com/nikitakit/DM2SVG
+Copyright (C) 2011 Chris Morgan,  https://gist.github.com/1471691
+
+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 struct
+
+def process_file(filename):
+    try:
+        f = open(filename, 'rb')
+    except IOError as e:
+        print >> sys.stderr, 'Unable to open %s: %s' % (filename, e)
+        return
+
+    with f:
+        height = emit_header(f)
+
+        layer = 'layer1'
+        timestamp = 0
+        svg_element = '<g inkscape:groupmode="layer" id="%s">' % layer
+
+        while True:
+            tag = f.read(1)
+            if tag == '':
+                break
+
+            if ord(tag) > 128:
+                if tag == '\x90':
+                    # Emit the current element and close the last layer
+                    emit_element(svg_element)
+                    emit_element('</g>')
+
+                    # Start a new layer
+                    layer = 'layer%d' % (ord(f.read(1)) + 1)
+                    timestamp = 0
+                    svg_element = '<g inkscape:groupmode="layer" id="%s">' % layer
+                elif tag == '\x88':
+                    # Read the timestamp next
+                    timestamp += ord(f.read(1)) * 20
+                else:
+                    # Emit the current svg element
+                    emit_element(svg_element)
+
+                    coords = []
+
+                    # Pen down
+                    while True:
+                        coords.append(read_point(f, height))
+                        if ord(f.read(1)) >= 128:
+                            break
+                        f.seek(-1, 1)  # It wasn't the magic value, don't miss it
+
+                    # Pen up
+                    coords.append(read_point(f, height))
+                    points = ' '.join(','.join(map(str, e)) for e in coords)
+                    svg_element = '<polyline points="%s" dm:timestamp="%s" />' % (points, timestamp)
+            else:
+                print >> sys.stderr, 'Unsupported tag: %s\n' % tag
+
+        # Emit the footer to finish it off
+        print '\n</svg>\n'
+
+
+def read_point(f, ymax):
+    x1, x2, y1, y2 = map(ord, f.read(4))
+    x = x1 | x2 << 7
+    y = y1 | y2 << 7
+
+    return x, ymax - y
+
+
+def emit_header(f):
+    id, version, width, height, page_type = struct.unpack('<32sBHHBxx', f.read(40))
+
+    print '''
+<svg viewBox="0 0 %(width)s %(height)s" fill="none" stroke="black" stroke-width="10" stroke-linecap="round" stroke-linejoin="round"
+  xmlns="http://www.w3.org/2000/svg"
+  xmlns:svg="http://www.w3.org/2000/svg"
+  xmlns:sodipodi="http://sodipodi.sourceforge.net/DTD/sodipodi-0.dtd"
+  xmlns:inkscape="http://www.inkscape.org/namespaces/inkscape"
+  xmlns:dm="http://github.com/nikitakit/DM2SVG">
+    <metadata>
+      <dm:page
+        id="%(id)s"
+        version="%(version)s"
+        width="%(width)s"
+        height="%(height)s"
+        page_type="%(page_type)s">
+      </dm:page>
+    </metadata>
+    <rect width="%(width)s" height="%(height)s" fill="aliceblue"/>
+''' % locals()
+
+    return height
+
+
+def emit_element(message):
+    if message:
+        print '%s\n' % message
+
+
+if __name__ == '__main__':
+    import sys
+
+    if len(sys.argv) == 2:
+        process_file(sys.argv[1])
+    else:
+        print >> sys.stderr, 'Usage: %s <dhw-file>' % sys.argv[0]
+        
+# vim: expandtab shiftwidth=4 tabstop=8 softtabstop=4 fileencoding=utf-8 textwidth=99