small enhancements in export selection

extensions/fablabchemnitz/export_selection/export_selection.inx

@@ -2,6 +2,8 @@
 <inkscape-extension xmlns="http://www.inkscape.org/namespace/inkscape/extension">
 	<name>Export Selection As ...</name>
 	<id>fablabchemnitz.de.export_selection_as</id>
+    <param name="tab" type="notebook">
+        <page name="tab_settings" gui-text="Settings">
         	<param name="wrap_transform" type="bool" gui-text="Wrap final document in transform">false</param>
             <param name="border_offset" type="float" min="0.000" max="9999.000" precision="3" gui-text="Add border offset around selection">1.000</param>
         	<param name="export_dir" type="path" mode="folder" gui-text="Location to save exported documents">./inkscape_export/</param>
@@ -11,7 +13,38 @@
             <param name="export_dxf" type="bool" gui-text="Export as DXF R14 file (mm units)">false</param>
             <param name="export_pdf" type="bool" gui-text="Export as PDF 1.5">false</param>
             <param name="newwindow" type="bool" gui-text="Open file in new Inkscape instance">false</param>
-    <label>Note: If svg/dxf/pdf already existed before, they might get deleted or overwritten unwanted. Please take care!</label>
+            <label>Note: If svg/dxf/pdf already existed before, they might get accidently deleted or overwritten. Please take care!</label>
+        </page>
+        <page name="tab_about" gui-text="About">
+            <label appearance="header">Export Selection As ...</label>
+            <label>Extension to export the current selection into different formats like SVG, DXF or PDF.</label>
+            <label>2021 / written by Mario Voigt (Stadtfabrikanten e.V. / FabLab Chemnitz)</label>
+            <spacer/>
+            <label appearance="header">Online Documentation</label>
+            <label appearance="url">https://y.stadtfabrikanten.org/exportselectionas</label>
+            <spacer/>
+            <label appearance="header">Contributing</label>
+            <label appearance="url">https://gitea.fablabchemnitz.de/MarioVoigt/mightyscape-1.X</label>
+            <label appearance="url">mailto:mario.voigt@stadtfabrikanten.org</label>
+            <spacer/>
+            <label appearance="header">Based on</label>
+            <label appearance="url">https://github.com/mireq/inkscape-export-selection-as-svg</label>
+            <spacer/>
+            <label appearance="header">MightyScape Extension Collection</label>
+            <label>This piece of software is part of the MightyScape for Inkscape Extension Collection and is licensed under GNU GPL v3</label>
+            <label appearance="url">https://y.stadtfabrikanten.org/mightyscape-overview</label>
+        </page>
+        <page name="tab_donate" gui-text="Donate">
+            <label appearance="header">Coffee + Pizza</label>
+            <label>We are the Stadtfabrikanten, running the FabLab Chemnitz since 2016. A FabLab is an open workshop that gives people access to machines and digital tools like 3D printers, laser cutters and CNC milling machines.</label>
+            <spacer/>           
+            <label>You like our work and want to support us? You can donate to our non-profit organization by different ways:</label>
+            <label appearance="url">https://y.stadtfabrikanten.org/donate</label>
+            <spacer/>
+            <label>Thanks for using our extension and helping us!</label>
+            <image>../000_about_fablabchemnitz.svg</image>
+        </page>
+    </param>
 	<effect needs-document="true" needs-live-preview="false">
 		<object-type>all</object-type>
 		<effects-menu>

extensions/fablabchemnitz/export_selection/export_selection.py

@@ -12,14 +12,11 @@ import warnings
 import inkex
 import inkex.command
 from inkex.command import inkscape, inkscape_command
+import tempfile
 
 from lxml import etree
 from scour.scour import scourString
 
-'''
-ToDo: work with temporary SVG file in temp dir instead handling deletion stuff at the end / valide that the file exists when spawning new instance
-'''
-
 logger = logging.getLogger(__name__)
 
 DETACHED_PROCESS = 0x00000008
@@ -28,6 +25,7 @@ GROUP_ID = 'export_selection_transform'
 class ExportObject(inkex.EffectExtension):
     
     def add_arguments(self, pars):
+        pars.add_argument("--tab")
         pars.add_argument("--wrap_transform", type=inkex.Boolean, default=False, help="Wrap final document in transform")
         pars.add_argument("--border_offset", type=float, default=1.000, help="Add border offset around selection")
         pars.add_argument("--export_dir", default="~/inkscape_export/",    help="Location to save exported documents")
@@ -45,6 +43,9 @@ class ExportObject(inkex.EffectExtension):
             Popen(["xdg-open", dir], close_fds=True, start_new_session=True).wait()
 
     def spawnIndependentInkscape(self, file): #function to spawn non-blocking inkscape instance. the inkscape command is available because it is added to ENVIRONMENT when Inkscape main instance is started
+        if not os.path.exists(file):
+            inkex.utils.debug("Error. {} does not exist!".format(file))
+            exit(1)
         warnings.simplefilter('ignore', ResourceWarning) #suppress "enable tracemalloc to get the object allocation traceback"
         if os.name == 'nt':
             Popen(["inkscape", file], close_fds=True, creationflags=DETACHED_PROCESS)
@@ -62,8 +63,6 @@ class ExportObject(inkex.EffectExtension):
             self.options.newwindow is False:
             inkex.utils.debug("You must select at least one option to continue!")
             return
-        else:
-            self.options.export_svg = True #required for all other options!
 
         if not self.svg.selected:
             inkex.errormsg("Selection is empty. Please select some objects first!")
@@ -130,6 +129,8 @@ class ExportObject(inkex.EffectExtension):
                 if child.tag == '{http://www.w3.org/2000/svg}metadata':
                     template.remove(child)
 
+        self.save_document(template, os.path.join(tempfile.gettempdir(), svg_filename)) # save one into temp dir to access for dxf/pdf/new window instance
+
         if self.options.export_svg is True:
             self.save_document(template, export_dir / svg_filename)
         
@@ -138,7 +139,7 @@ class ExportObject(inkex.EffectExtension):
             
         if self.options.newwindow is True:
             #inkscape(os.path.join(export_dir, svg_filename)) #blocking cmd
-            self.spawnIndependentInkscape(os.path.join(export_dir, svg_filename)) #non-blocking
+            self.spawnIndependentInkscape(os.path.join(tempfile.gettempdir(), svg_filename)) #non-blocking
             
         if self.options.export_dxf is True:
             #ensure that python command is available #we pass 25.4/96 which stands for unit mm. See inkex.units.UNITS and dxf_outlines.inx
@@ -147,7 +148,7 @@ class ExportObject(inkex.EffectExtension):
                 self.options.dxf_exporter_path, 
                 '--output=' + os.path.join(export_dir, filename_base + '.dxf'), 
                 r'--units=25.4/96', 
-                os.path.join(export_dir, svg_filename)
+                os.path.join(tempfile.gettempdir(), svg_filename)
                 ]
             proc = Popen(cmd, shell=False, stdout=PIPE, stderr=PIPE)
             stdout, stderr = proc.communicate()
@@ -155,14 +156,11 @@ class ExportObject(inkex.EffectExtension):
                 inkex.utils.debug("%d %s %s" % (proc.returncode, stdout, stderr))
             
         if self.options.export_pdf is True:    
-            cli_output = inkscape(os.path.join(export_dir, svg_filename), actions='export-pdf-version:1.5;export-text-to-path;export-filename:{file_name};export-do;FileClose'.format(file_name=os.path.join(export_dir, filename_base + '.pdf')))
+            cli_output = inkscape(os.path.join(tempfile.gettempdir(), svg_filename), actions='export-pdf-version:1.5;export-text-to-path;export-filename:{file_name};export-do;FileClose'.format(file_name=os.path.join(export_dir, filename_base + '.pdf')))
             if len(cli_output) > 0:
                 self.msg("Inkscape returned the following output when trying to run the file export; the file export may still have worked:")
                 self.msg(cli_output)
                 
-        if svg_export is False and self.options.newwindow is False: #we need the SVG file in case we open in new window because we spawn a new instance
-            os.remove(os.path.join(export_dir, svg_filename)) #remove SVG if not enabled to export. Might delete existing SVG accidently!
-      
     def create_document(self):
         document = self.svg.copy()
         for child in document.getchildren():

extensions/fablabchemnitz/input_stl/input_stl.py

@@ -171,12 +171,10 @@ class InputSTL(inkex.EffectExtension):
             '--first-layer-height', '0.1mm', 
             '--export-svg', '-o', svgfile, args.inputfile]
               
-        
         def scale_points(pts, scale):
             """ str='276.422496,309.4 260.209984,309.4 260.209984,209.03 276.422496,209.03' """
             return re.sub('\d*\.\d*', lambda x: str(float(x.group(0))*scale), pts)
              
-        
         ## CAUTION: keep svg_pathstats() in sync with inkscape-centerlinetrace
         def svg_pathstats(path_d):
             """ calculate statistics from an svg path: