typst: explicitly compute units in image dimensions when not given

news/changelog-1.6.md

@@ -14,6 +14,7 @@ All changes included in 1.6:
 
 - ([#10168](https://github.com/quarto-dev/quarto-cli/issues/10168)): support `csl` bibliography style.
 - ([#10181](https://github.com/quarto-dev/quarto-cli/issues/10181)): Remove workaround for image dimensions which is no longer necessary and mishandled image paths with spaces.
+- ([#10217](https://github.com/quarto-dev/quarto-cli/issues/10217)): Explicitly compute units for image dimensions in `typst` format when they're not given.
 
 ## Other Fixes and Improvements
 

src/resources/filters/quarto-post/typst.lua

@@ -96,6 +96,16 @@ function render_typst_fixups()
     traverse = "topdown",
     Image = function(image)
       image = _quarto.modules.mediabag.resolve_image_from_url(image) or image
+      -- REMINDME 2024-09-01
+      -- work around until https://github.com/jgm/pandoc/issues/9945 is fixed
+      local height_as_number = tonumber(image.attributes["height"])
+      local width_as_number = tonumber(image.attributes["width"])
+      if image.attributes["height"] ~= nil and type(height_as_number) == "number" then
+        image.attributes["height"] = tostring(image.attributes["height"] / PANDOC_WRITER_OPTIONS.dpi) .. "in"
+      end
+      if image.attributes["width"] ~= nil and type(width_as_number) == "number" then
+        image.attributes["width"] = tostring(image.attributes["width"] / PANDOC_WRITER_OPTIONS.dpi) .. "in"
+      end
       return image
     end,
     Div = function(div)

tests/docs/smoke-all/2024/07/03/10217.qmd

@@ -0,0 +1,24 @@
+---
+format: typst
+---
+
+
+::: {.cell execution_count=1}
+``` {.python .cell-code}
+from plotnine import ggplot, geom_point, aes, stat_smooth, facet_wrap
+from plotnine.data import mtcars
+
+(
+    ggplot(mtcars, aes("wt", "mpg", color="factor(gear)"))
+    + geom_point()
+    + stat_smooth(method="lm")
+    + facet_wrap("gear")
+)
+```
+
+::: {.cell-output .cell-output-display}
+![](10217_files/figure-typst/cell-2-output-1.png){width=640 height=480}
+:::
+:::
+
+