FabLab_Chemnitz/mightyscape-1.1-deprecated
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fix in imagetracer.js handling

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This commit is contained in:
Mario Voigt 2021-04-23 15:21:30 +02:00
parent 5949668e12
commit d9dfc3323b
1 changed files with 42 additions and 26 deletions
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60
extensions/fablabchemnitz/imagetracer.js/imagetracerjs.py
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@ -17,16 +17,23 @@ Features
Author: Mario Voigt / FabLab Chemnitz
Mail: mario.voigt@stadtfabrikanten.org
Date: 18.08.2020
Last patch: 18.08.2020
Last patch: 23.04.2021
License: GNU GPL v3
Used version of imagetracerjs: https://github.com/jankovicsandras/imagetracerjs/commit/4d0f429efbb936db1a43db80815007a2cb113b34
ToDo:
- fix resizing if one or all of the following sizes are zero:
img_w = image.get('width')
img_h = image.get('height')
img_x = image.get('x')
img_y = image.get('y')
"""
class Imagetracerjs (inkex.EffectExtension):
def checkImagePath(self, node):
xlink = node.get('xlink:href')
def checkImagePath(self, element):
xlink = element.get('xlink:href')
if xlink and xlink[:5] == 'data:':
# No need, data alread embedded
return
@ -39,7 +46,7 @@ class Imagetracerjs (inkex.EffectExtension):
# Backup directory where we can find the image
if not os.path.isfile(path):
path = node.get('sodipodi:absref', path)
path = element.get('sodipodi:absref', path)
if not os.path.isfile(path):
inkex.errormsg('File not found "{}". Unable to embed image.').format(path)
@ -74,28 +81,29 @@ class Imagetracerjs (inkex.EffectExtension):
# internal overwrite for scale:
self.options.scale = 1.0
if (self.options.ids):
for node in self.svg.selected.values():
if node.tag == inkex.addNS('image', 'svg'):
self.path = self.checkImagePath(node) # This also ensures the file exists
if len(self.svg.selected) > 0:
images = self.svg.selection.filter(inkex.Image).values()
if len(images) > 0:
for image in images:
self.path = self.checkImagePath(image) # This also ensures the file exists
if self.path is None: # check if image is embedded or linked
image_string = node.get('{http://www.w3.org/1999/xlink}href')
image_string = image.get('{http://www.w3.org/1999/xlink}href')
# find comma position
i = 0
while i < 40:
if image_string[i] == ',':
break
i = i + 1
image = Image.open(BytesIO(base64.b64decode(image_string[i + 1:len(image_string)])))
img = Image.open(BytesIO(base64.b64decode(image_string[i + 1:len(image_string)])))
else:
image = Image.open(self.path)
img = Image.open(self.path)
# Write the embedded or linked image to temporary directory
if os.name == "nt":
exportfile = "imagetracerjs.png"
else:
exportfile ="/tmp/imagetracerjs.png"
image.save(exportfile, "png")
img.save(exportfile, "png")
nodeclipath = os.path.join("imagetracerjs-master", "nodecli", "nodecli.js")
@ -128,7 +136,7 @@ class Imagetracerjs (inkex.EffectExtension):
# Create the vector traced SVG file
with os.popen(command, "r") as tracerprocess:
result = tracerprocess.read()
if result != "imagetracerjs.png.svg was saved!\n":
if "was saved!" not in result:
self.msg("Error while processing input: " + result)
self.msg("Check the image file (maybe convert and save as new file) and try again.")
self.msg("\nYour parser command:")
@ -153,13 +161,19 @@ class Imagetracerjs (inkex.EffectExtension):
viewBox = doc.get('viewBox') #eg "0 0 700 600"
trace_width = viewBox.split(' ')[2]
trace_height = viewBox.split(' ')[3]
newGroup.attrib['transform'] = "matrix(" + \
str(float(node.get('width')) / float(trace_width)) + \
", 0, 0 , " + \
str(float(node.get('height')) / float(trace_height)) + \
"," + node.get('x') + \
"," + node.get('y') + ")"
newGroup.append(doc)
img_w = image.get('width')
img_h = image.get('height')
img_x = image.get('x')
img_y = image.get('y')
if img_w is not None and img_h is not None and img_x is not None and img_y is not None:
transform = "matrix({:1.6f}, 0, 0, {:1.6f}, {:1.6f}, {:1.6f})"\
.format(float(img_w) / float(trace_width), float(img_h) / float(trace_height), float(img_x), float(img_y))
newGroup.attrib['transform'] = transform
for child in doc.getchildren():
newGroup.append(child)
# Delete the temporary svg file
if os.path.exists(exportfile + ".svg"):
@ -167,9 +181,11 @@ class Imagetracerjs (inkex.EffectExtension):
#remove the old image or not
if self.options.keeporiginal is not True:
node.delete()
image.delete()
else:
self.msg("No image found for tracing. Please select an image first.")
self.msg("No images found in selection! Check if you selected a group instead.")
else:
self.msg("Selection is empty. Please select one or more images.")
if __name__ == '__main__':
Imagetracerjs().run()