[gnome-icon-theme-extras] add the python script for rendering PNGs from gnome-icon-theme. Uses inkscape --shell and is much fa

[Jakub Steiner <jimmac src gnome org>]

commit eb527edfb0e6f9c320746e9ac739f81954beeaea
Author: Jakub Steiner <jimmac gmail com>
Date:   Mon Mar 29 18:20:01 2010 +0200

    add the python script for rendering PNGs from gnome-icon-theme. Uses inkscape --shell and is much faster.

 render-icon-theme.py |  149 ++++++++++++++++++++++++++++++++++++++++++++++++++
 1 files changed, 149 insertions(+), 0 deletions(-)
---
diff --git a/render-icon-theme.py b/render-icon-theme.py
new file mode 100755
index 0000000..4e486d5
--- /dev/null
+++ b/render-icon-theme.py
@@ -0,0 +1,149 @@
+#!/usr/bin/env python
+
+import os
+import sys
+import xml.sax
+import subprocess
+
+INKSCAPE = '/usr/bin/inkscape'
+SRC = os.path.join('.', 'src')
+
+inkscape_process = None
+
+def wait_for_prompt(process, command=None):
+    if command is not None:
+        process.stdin.write(command+'\n')
+
+    output = process.stdout.read(1)
+    output += process.stdout.read(1)
+    
+    while output != "\n>":
+        output = output[-1:]
+        output += process.stdout.read(1)
+
+def start_inkscape():
+    process = subprocess.Popen([INKSCAPE, '--shell'], bufsize=0, stdin=subprocess.PIPE, stdout=subprocess.PIPE)
+    wait_for_prompt(process)
+    return process
+
+def inkscape_render_rect(icon_file, rect, output_file):
+    global inkscape_process
+    if inkscape_process is None:
+        inkscape_process = start_inkscape()
+    wait_for_prompt(inkscape_process, '%s -i %s -e %s' % (icon_file, rect, output_file))
+
+class ContentHandler(xml.sax.ContentHandler):
+    ROOT = 0
+    SVG = 1
+    LAYER = 2
+    OTHER = 3
+    TEXT = 4
+    def __init__(self, path, force=False):
+        self.stack = [self.ROOT]
+        self.inside = [self.ROOT]
+        self.path = path
+        self.rects = []
+        self.state = self.ROOT
+        self.chars = ""
+        self.force = force
+
+    def endDocument(self):
+        pass
+
+    def startElement(self, name, attrs):
+        if self.inside[-1] == self.ROOT:
+            if name == "svg":
+                self.stack.append(self.SVG)
+                self.inside.append(self.SVG)
+                return
+        elif self.inside[-1] == self.SVG:
+            if (name == "g" and attrs.has_key('inkscape:groupmode') and attrs.has_key('inkscape:label')
+               and attrs['inkscape:groupmode'] == 'layer' and attrs['inkscape:label'] == 'baseplate'):
+                self.stack.append(self.LAYER)
+                self.inside.append(self.LAYER)
+                self.context = None
+                self.icon_name = None
+                self.rects = []
+                return
+        elif self.inside[-1] == self.LAYER:
+            if name == "text" and attrs.has_key('inkscape:label') and attrs['inkscape:label'] == 'context':
+                self.stack.append(self.TEXT)
+                self.inside.append(self.TEXT)
+                self.text='context'
+                self.chars = ""
+                return
+            elif name == "text" and attrs.has_key('inkscape:label') and attrs['inkscape:label'] == 'icon-name':
+                self.stack.append(self.TEXT)
+                self.inside.append(self.TEXT)
+                self.text='icon-name'
+                self.chars = ""
+                return
+            elif name == "rect":
+                self.rects.append(attrs)
+
+        self.stack.append(self.OTHER)
+
+
+    def endElement(self, name):
+        stacked = self.stack.pop()
+        if self.inside[-1] == stacked:
+            self.inside.pop()
+
+        if stacked == self.TEXT and self.text is not None:
+            assert self.text in ['context', 'icon-name']
+            if self.text == 'context':
+                self.context = self.chars
+            elif self.text == 'icon-name':
+                self.icon_name = self.chars
+            self.text = None
+        elif stacked == self.LAYER:
+            assert self.icon_name
+            assert self.context
+            print '%s %s' % (self.context, self.icon_name)
+            for rect in self.rects:
+                width = rect['width']
+                height = rect['height']
+                id = rect['id']
+
+                dir = os.path.join("gnome", "%sx%s" % (width, height), self.context)
+                outfile = os.path.join(dir, self.icon_name+'.png')
+                if not os.path.exists(dir):
+                    os.makedirs(dir)
+                # Do a time based check!
+                if self.force or not os.path.exists(outfile):
+                    inkscape_render_rect(self.path, id, outfile)
+                    sys.stdout.write('.')
+                else:
+                    stat_in = os.stat(self.path)
+                    stat_out = os.stat(outfile)
+                    if stat_in.st_mtime > stat_out.st_mtime:
+                        inkscape_render_rect(self.path, id, outfile)
+                        sys.stdout.write('.')
+                    else:
+                        sys.stdout.write('-')
+                sys.stdout.flush()
+            sys.stdout.write('\n')
+            sys.stdout.flush()
+
+    def characters(self, chars):
+        self.chars += chars.strip()
+
+if len(sys.argv) == 1:
+    if not os.path.exists('gnome'):
+        os.mkdir('gnome')
+    print 'Rendering from SVGs in %s' % SRC
+    for file in os.listdir(SRC):
+        if file[-4:] == '.svg':
+            file = os.path.join(SRC, file)
+            handler = ContentHandler(file)
+            xml.sax.parse(open(file), handler)
+else:
+    file = os.path.join(SRC, sys.argv[1] + '.svg')
+    if os.path.exists(os.path.join(file)):
+        handler = ContentHandler(file, True)
+        xml.sax.parse(open(file), handler)
+    else:
+        print "Error: No such file %s" % file
+        sys.exit(1)
+
+