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65 lines
2.8 KiB
Python
65 lines
2.8 KiB
Python
#Copyright (c) 2018 Ultimaker B.V.
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#Cura is released under the terms of the LGPLv3 or higher.
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from typing import cast
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from Charon.VirtualFile import VirtualFile #To open UFP files.
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from Charon.OpenMode import OpenMode #To indicate that we want to write to UFP files.
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from io import StringIO #For converting g-code to bytes.
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from UM.Application import Application
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from UM.Logger import Logger
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from UM.Mesh.MeshWriter import MeshWriter #The writer we need to implement.
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from UM.PluginRegistry import PluginRegistry #To get the g-code writer.
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from PyQt5.QtCore import QBuffer
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from cura.Snapshot import Snapshot
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from UM.i18n import i18nCatalog
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catalog = i18nCatalog("cura")
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class UFPWriter(MeshWriter):
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def __init__(self):
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super().__init__()
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self._snapshot = None
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Application.getInstance().getOutputDeviceManager().writeStarted.connect(self._createSnapshot)
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def _createSnapshot(self, *args):
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# must be called from the main thread because of OpenGL
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Logger.log("d", "Creating thumbnail image...")
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self._snapshot = Snapshot.snapshot(width = 300, height = 300)
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def write(self, stream, nodes, mode = MeshWriter.OutputMode.BinaryMode):
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archive = VirtualFile()
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archive.openStream(stream, "application/x-ufp", OpenMode.WriteOnly)
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#Store the g-code from the scene.
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archive.addContentType(extension = "gcode", mime_type = "text/x-gcode")
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gcode_textio = StringIO() #We have to convert the g-code into bytes.
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gcode_writer = cast(MeshWriter, PluginRegistry.getInstance().getPluginObject("GCodeWriter"))
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success = gcode_writer.write(gcode_textio, None)
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if not success: #Writing the g-code failed. Then I can also not write the gzipped g-code.
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self.setInformation(gcode_writer.getInformation())
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return False
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gcode = archive.getStream("/3D/model.gcode")
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gcode.write(gcode_textio.getvalue().encode("UTF-8"))
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archive.addRelation(virtual_path = "/3D/model.gcode", relation_type = "http://schemas.ultimaker.org/package/2018/relationships/gcode")
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#Store the thumbnail.
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if self._snapshot:
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archive.addContentType(extension = "png", mime_type = "image/png")
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thumbnail = archive.getStream("/Metadata/thumbnail.png")
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thumbnail_buffer = QBuffer()
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thumbnail_buffer.open(QBuffer.ReadWrite)
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thumbnail_image = self._snapshot
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thumbnail_image.save(thumbnail_buffer, "PNG")
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thumbnail.write(thumbnail_buffer.data())
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archive.addRelation(virtual_path = "/Metadata/thumbnail.png", relation_type = "http://schemas.openxmlformats.org/package/2006/relationships/metadata/thumbnail", origin = "/3D/model.gcode")
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else:
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Logger.log("d", "Thumbnail not created, cannot save it")
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archive.close()
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return True
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