pass css and latex svg flag back from rendering op

This could potentially help us avoid having to refetch the notetype
during study in the future, though updates to Note initialization and
the LaTeX handling would be required first.

pylib/anki/template.py

@@ -61,13 +61,15 @@ TemplateReplacementList = List[Union[str, TemplateReplacement]]
 class PartiallyRenderedCard:
     qnodes: TemplateReplacementList
     anodes: TemplateReplacementList
+    css: str
+    latex_svg: bool
 
     @classmethod
     def from_proto(cls, out: _pb.RenderCardOut) -> PartiallyRenderedCard:
         qnodes = cls.nodes_from_proto(out.question_nodes)
         anodes = cls.nodes_from_proto(out.answer_nodes)
 
-        return PartiallyRenderedCard(qnodes, anodes)
+        return PartiallyRenderedCard(qnodes, anodes, out.css, out.latex_svg)
 
     @staticmethod
     def nodes_from_proto(
@@ -151,6 +153,7 @@ class TemplateRenderContext:
         self._template = template
         self._fill_empty = fill_empty
         self._fields: Optional[Dict] = None
+        self._latex_svg = False
         if not notetype:
             self._note_type = note.model()
         else:
@@ -197,6 +200,9 @@ class TemplateRenderContext:
     def note_type(self) -> NotetypeDict:
         return self._note_type
 
+    def latex_svg(self) -> bool:
+        return self._latex_svg
+
     # legacy
     def qfmt(self) -> str:
         return templates_for_card(self.card(), self._browser)[0]
@@ -227,9 +233,11 @@ class TemplateRenderContext:
             answer_text=aout.text,
             question_av_tags=av_tags_to_native(qout.av_tags),
             answer_av_tags=av_tags_to_native(aout.av_tags),
-            css=self.note_type()["css"],
+            css=partial.css,
         )
 
+        self._latex_svg = partial.latex_svg
+
         if not self._browser:
             hooks.card_did_render(output, self)
 

rslib/backend.proto

@@ -704,6 +704,8 @@ message RenderUncommittedCardLegacyIn {
 message RenderCardOut {
   repeated RenderedTemplateNode question_nodes = 1;
   repeated RenderedTemplateNode answer_nodes = 2;
+  string css = 3;
+  bool latex_svg = 4;
 }
 
 message RenderedTemplateNode {

rslib/src/backend/cardrendering.rs

@@ -175,6 +175,8 @@ impl From<RenderCardOutput> for pb::RenderCardOut {
         pb::RenderCardOut {
             question_nodes: rendered_nodes_to_proto(o.qnodes),
             answer_nodes: rendered_nodes_to_proto(o.anodes),
+            css: o.css,
+            latex_svg: o.latex_svg,
         }
     }
 }

rslib/src/notetype/render.rs

@@ -16,6 +16,8 @@ use crate::{
 pub struct RenderCardOutput {
     pub qnodes: Vec<RenderedNode>,
     pub anodes: Vec<RenderedNode>,
+    pub css: String,
+    pub latex_svg: bool,
 }
 
 impl Collection {
@@ -119,7 +121,12 @@ impl Collection {
             nt.is_cloze(),
             &self.tr,
         )?;
-        Ok(RenderCardOutput { qnodes, anodes })
+        Ok(RenderCardOutput {
+            qnodes,
+            anodes,
+            css: nt.config.css.clone(),
+            latex_svg: nt.config.latex_svg,
+        })
     }
 
     // Add special fields if they don't clobber note fields