1 files changed, 110 insertions, 0 deletions
diff --git a/utils.py b/utils.py
new file mode 100644
index 0000000..5085d66
--- /dev/null
+++ b/utils.py
@@ -0,0 +1,110 @@
+import base64
+import rsvg
+import re
+import os
+import cairo
+import gc
+import gtk
+from hashlib import md5
+import time
+from time import strftime
+
+from sugar import util
+import _camera
+
+def getStringFromPixbuf(pixbuf):
+	data = [""]
+	pixbuf.save_to_callback(_saveDataToBufferCb, "png", {}, data)
+	return base64.b64encode(str(data[0]))
+
+
+def _saveDataToBufferCb(buf, data):
+	data[0] += buf
+	return True
+
+
+def getPixbufFromString(str):
+	pbl = gtk.gdk.PixbufLoader()
+	data = base64.b64decode( str )
+	pbl.write(data)
+	pbl.close()
+	return pbl.get_pixbuf()
+
+
+def loadSvg( data, stroke, fill ):
+	if ((stroke == None) or (fill == None)):
+		return rsvg.Handle( data=data )
+
+	entity = '<!ENTITY fill_color "%s">' % fill
+	data = re.sub('<!ENTITY fill_color .*>', entity, data)
+
+	entity = '<!ENTITY stroke_color "%s">' % stroke
+	data = re.sub('<!ENTITY stroke_color .*>', entity, data)
+
+	return rsvg.Handle( data=data )
+
+
+def getUniqueFilepath( path, i ):
+	pathOb = os.path.abspath( path )
+	newPath = os.path.join( os.path.dirname(pathOb), str( str(i) + os.path.basename(pathOb) ) )
+	if (os.path.exists(newPath)):
+		i = i + 1
+		return getUniqueFilepath( pathOb, i )
+	else:
+		return os.path.abspath( newPath )
+
+
+def md5File( filepath ):
+	md = md5()
+	f = file( filepath, 'rb' )
+	md.update( f.read() )
+	digest = md.hexdigest()
+	hash = util.printable_hash(digest)
+	return hash
+
+
+def generateThumbnail( pixbuf, scale, thumbw, thumbh ):
+	#need to generate thumbnail version here
+	thumbImg = cairo.ImageSurface(cairo.FORMAT_ARGB32, thumbw, thumbh)
+	tctx = cairo.Context(thumbImg)
+	img = _camera.cairo_surface_from_gdk_pixbuf(pixbuf)
+	tctx.scale(scale, scale)
+	tctx.set_source_surface(img, 0, 0)
+	tctx.paint()
+	gc.collect()
+	return thumbImg
+
+
+def scaleSvgToDim( handle, dim ):
+	#todo...
+	scale = 1.0
+
+	svgDim = handle.get_dimension_data()
+	if (svgDim[0] > dim[0]):
+		pass
+
+	return scale
+
+
+def getDateString( when ):
+	#todo: internationalize the date
+	return strftime( "%a, %b %d, %I:%M:%S %p", time.localtime(when) )
+
+
+def grayScalePixBuf2( pb, copy ):
+	arr = pb.get_pixels_array()
+	if (copy):
+		arr = arr.copy()
+	for row in arr:
+		for pxl in row:
+			y = 0.3*pxl[0][0]+0.59*pxl[1][0]+0.11*pxl[2][0]
+			pxl[0][0] = y
+			pxl[1][0] = y
+			pxl[2][0] = y
+	return gtk.gdk.pixbuf_new_from_array(arr, pb.get_colorspace(), pb.get_bits_per_sample())
+
+
+def grayScalePixBuf( pb, copy ):
+	pb2 = gtk.gdk.Pixbuf(gtk.gdk.COLORSPACE_RGB, False, 8, pb.get_width(), pb.get_height())
+	pb.saturate_and_pixelate(pb2, 0, 0)
+	return pb2
+\ No newline at end of file