Directory reorg: Put renderer into its own subdir

1 files changed, 124 insertions, 0 deletions

diff --git a/renderer/support/pogojig/inkscape/inkscape.py b/renderer/support/pogojig/inkscape/inkscape.py
new file mode 100644
index 0000000..efe7677
--- /dev/null
+++ b/renderer/support/pogojig/inkscape/inkscape.py
@@ -0,0 +1,124 @@
+import os
+import subprocess
+import xml.etree.ElementTree as etree
+
+def get_inkscape_layers(svg_path):
+    document = etree.parse(svg_path)
+    
+    layers = []
+    nodes = document.findall(
+        '{http://www.w3.org/2000/svg}g[@{http://www.inkscape.org/namespaces/inkscape}groupmode="layer"]')
+    
+    for i in nodes:
+        inkscape_name = i.get('{http://www.inkscape.org/namespaces/inkscape}label').strip()
+        
+        if inkscape_name.endswith(']'):
+            export_name, args = inkscape_name[:-1].rsplit('[', 1)
+            
+            export_name = export_name.strip()
+            args = args.strip()
+            
+            use_paths = 'p' in args
+        else:
+            use_paths = False
+            export_name = inkscape_name
+        
+        layers.append(Layer(inkscape_name, export_name, use_paths))
+    return layers
+
+
+def _inkscape(svg_path, verbs):
+    subprocess.run([os.environ.get('INKSCAPE', 'inkscape'), *(x for verb in verbs for x in ('--verb', verb)), svg_path])
+
+
+class Layer(object):
+    def __init__(self, inkscape_name, export_name, use_paths):
+        self.inkscape_name = inkscape_name
+        self.export_name = export_name
+        self.use_paths = use_paths
+
+
+class InkscapeCommandLine(object):
+    def __init__(self, path):
+        self._path = path
+        self._layers = get_inkscape_layers(path)
+        self._current_layer_index = None
+        self._verbs = []
+    
+    def apply_to_document(self, *verb):
+        self._verbs.extend(verb)
+    
+    def apply_to_layer(self, layer, *verb):
+        self._go_to_layer(layer)
+        self.apply_to_document(*verb)
+    
+    def select_all_in_layer(self, layer):
+        self.apply_to_layer(layer, 'EditSelectAll')
+    
+    def apply_to_layer_content(self, layer, *verbs):
+        self.select_all_in_layer(layer)
+        self.apply_to_document(*verbs)
+    
+    def _go_to_layer(self, layer, with_selection=False):
+        if self._current_layer_index is None:
+            # Initialize to a known state. We cannot assume that any layer is
+            #  selected and thus we need as many LayerPrev as we have layers.
+            self._current_layer_index = len(self._layers)
+            self._go_to_layer(self._layers[0])
+        
+        target_index = self._layers.index(layer)
+        
+        if with_selection:
+            next_command = 'LayerMoveToNext'
+            previous_command = 'LayerMoveToPrev'
+        else:
+            next_command = 'LayerNext'
+            previous_command = 'LayerPrev'
+        
+        while self._current_layer_index != target_index:
+            if self._current_layer_index < target_index:
+                self.apply_to_document(next_command)
+                self._current_layer_index += 1
+            else:
+                self.apply_to_document(previous_command)
+                self._current_layer_index -= 1
+        
+        if with_selection:
+            # When using LayerMoveToNext and LayerMoveToPrev, inkscape does
+            # not reliably select the next/previous layer.
+            self._current_layer_index = None
+    
+    def duplicate_layer(self, layer):
+        self.apply_to_layer(layer, 'LayerDuplicate')
+
+        # Inkscape 0.91 places a duplicated layer above (after) the selected
+        # one and selects the new layer.
+        new_layer = Layer(layer.inkscape_name + ' copy', layer.export_name, layer.use_paths)
+        self._layers.insert(self._current_layer_index + 1, new_layer)
+        
+        # Whether the original or the new layer is selected after the operation
+        # fluctuates between Inkscape versions.
+        self._current_layer_index = None
+        
+        return new_layer
+    
+    def delete_layer(self, layer):
+        self.apply_to_layer(layer, 'LayerDelete')
+        
+        # Inkscape 0.91 selects the layer above (after) the deleted layer.
+        del self._layers[self._current_layer_index]
+    
+    def clear_layer(self, layer):
+        self.select_all_in_layer(layer)
+        self.apply_to_document('EditDelete')
+    
+    def move_content(self, source_layer, target_layer):
+        self.select_all_in_layer(source_layer)
+        self._go_to_layer(target_layer, True)
+    
+    def run(self):
+        _inkscape(self._path, self._verbs)
+    
+    @property
+    def layers(self):
+        return list(self._layers)