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postprocessor for brand.yml in typst
includes template fix for jgm/pandoc#9996 title-font needs to be removed overlays format-specific brand.defaults on format.render includes intentionally broken logo default brand.yaml logo is (for now) still just a string path open question whether width and padding should be CSS or perhaps typst would additionally support e.g. typst-width and inset for direct typst input
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,182 @@ | ||
| function render_typst_brand_yml() | ||
| if not _quarto.format.isTypstOutput() then | ||
| return {} | ||
| end | ||
|
|
||
| local function sortedPairs(t, f) | ||
| local a = {} | ||
| for n in pairs(t) do table.insert(a, n) end | ||
| table.sort(a, f) | ||
| local i = 0 -- iterator variable | ||
| local iter = function() -- iterator function | ||
| i = i + 1 | ||
| if a[i] == nil then return nil | ||
| else return a[i], t[a[i]] | ||
| end | ||
| end | ||
| return iter | ||
| end | ||
|
|
||
| local function to_typst_dict_indent(tab, curr, indent) | ||
| curr = curr or '' | ||
| indent = indent or ' ' | ||
| local entries = {} | ||
| local inside = curr .. indent | ||
| for k, v in sortedPairs(tab) do | ||
| if type(v) == 'table' then | ||
| v = to_typst_dict_indent(v, inside, indent) | ||
| end | ||
| if k and v then | ||
| table.insert(entries, k .. ': ' .. v) | ||
| end | ||
| end | ||
| if #entries == 0 then return nil end | ||
| return '(\n' .. inside .. table.concat(entries, ',\n' .. inside) .. '\n' .. curr .. ')' | ||
| end | ||
|
|
||
| local horz_to_typst = { | ||
| left = "left", | ||
| center = "center", | ||
| right = "right", | ||
| } | ||
| local vert_to_typst = { | ||
| top = "top", | ||
| middle = "horizon", | ||
| bottom = "bottom", | ||
| } | ||
|
|
||
| local function location_to_typst_align(location) | ||
| local _, ndash = location:gsub('-', '') | ||
| if ndash ~= 1 then return nil end | ||
| local horz, vert = location:match '(%a+)--(%a+)' | ||
| quarto.log.output('lota', horz, vert) | ||
| if not horz_to_typst[horz] or not vert_to_typst[vert] then return nil end | ||
| quarto.log.output('lota3', horz, vert) | ||
| return horz_to_typst[horz] .. '+' .. vert_to_typst[vert] | ||
| end | ||
|
|
||
| return { | ||
| Pandoc = function(pandoc) | ||
| local brand = param('brand') | ||
| if not brand then return nil end | ||
| brand = brand.brand or brand | ||
|
|
||
| -- logo | ||
| if brand.logo then | ||
| local logo = brand.logo | ||
| if type(logo) ~= 'string' then | ||
| if logo.large then | ||
| logo = logo.large | ||
| end | ||
| -- and dark/light | ||
| end | ||
| if logo then | ||
| local src = logo | ||
| local padding = '0.5in' | ||
| local width = '2in' | ||
| local location = 'left+top' | ||
| if type(logo) ~= 'string' then | ||
| src = logo.src | ||
| padding = logo.padding or padding | ||
| width = logo.width or width | ||
| location = logo.location and location_to_typst_align(logo.location) or location | ||
| quarto.log.output('logggooo', location) | ||
| end | ||
| if src then | ||
| quarto.doc.include_text('in-header', | ||
| '#set page(background: align(' .. location .. ', box(inset: ' .. padding .. ', image("' .. src .. '", width: ' .. width .. '))))') | ||
| end | ||
| end | ||
| end | ||
|
|
||
| -- color | ||
| if brand.color and brand.color.with then | ||
| local palette = {} | ||
| for name, color in pairs(brand.color.with) do | ||
| palette[name] = output_typst_color(parse_css_color(color)) | ||
| end | ||
| local decl = '#let brand-palette = ' .. to_typst_dict_indent(palette) | ||
| quarto.doc.include_text('in-header', decl) | ||
| end | ||
| if brand.color then | ||
| local BACKGROUND_OPACITY = 0.1 | ||
| local theme = {} | ||
| local themebk = {} | ||
| for name, color in pairs(brand.color) do | ||
| if name ~= 'with' then | ||
| if brand.color.with and brand.color.with[color] then | ||
| theme[name] = 'brand-palette.' .. color | ||
| color = brand.color.with[color] -- no nice idiomatic way to do bk color | ||
| else | ||
| theme[name] = output_typst_color(parse_css_color(color)) | ||
| end | ||
| themebk[name] = output_typst_color(parse_css_color(color), | ||
| {unit = 'fraction', value = BACKGROUND_OPACITY}) | ||
| end | ||
| end | ||
| local decl = '#let brand-theme = ' .. to_typst_dict_indent(theme) | ||
| quarto.doc.include_text('in-header', decl) | ||
| -- for demo purposes only, should implement backgroundcolor and fontcolor | ||
| if brand.color.background then | ||
| quarto.doc.include_text('in-header', '#set page(fill: brand-theme.background)') | ||
| end | ||
| if brand.color.foreground then | ||
| quarto.doc.include_text('in-header', '#set text(fill: brand-theme.foreground)') | ||
| end | ||
| local decl = '// theme colors at opacity ' .. BACKGROUND_OPACITY .. '\n#let brand-theme-background = ' .. to_typst_dict_indent(themebk) | ||
| quarto.doc.include_text('in-header', decl) | ||
| end | ||
|
|
||
| -- typography | ||
| if brand.typography then | ||
| -- this is the only diagnostic Typst currently offers for font not found | ||
| quarto.doc.include_text('in-header', '#set text(fallback: false)') | ||
| local fontdir | ||
| for target, font in pairs(brand.typography) do | ||
| if target ~= 'font' then -- handled in Meta | ||
| local family = font.family | ||
| if target == 'headings' then | ||
| quarto.doc.include_text('in-header', '#show heading: set text(font: "' .. family .. '")') | ||
| -- quarto.doc.include_text('in-header', '#show article: set text(font: "' .. family .. '")') | ||
| elseif target == 'monospace' then | ||
| quarto.doc.include_text('in-header', '#show raw: set text(font: "' .. family .. '")') | ||
| end | ||
| end | ||
| end | ||
| end | ||
| end, | ||
| Meta = function(meta) | ||
| local brand = param('brand') | ||
| if not brand then return nil end | ||
| brand = brand.brand or brand | ||
|
|
||
| if brand and brand.typography then | ||
| if brand.typography.base then | ||
| meta['mainfont'] = brand.typography.base.family | ||
| end | ||
| if brand.typography.headings then | ||
| meta['title-font'] = brand.typography.headings.family | ||
| end | ||
| if brand.typography.font then | ||
| local kFontPaths = 'font-paths' -- no luck importing this | ||
| for _, entry in ipairs(brand.typography.font) do | ||
| if entry['files'] then fontdir = '.' end | ||
| end | ||
| if not fontdir then | ||
| quarto.log.warning('hacky brand.yml only supports font: file: right now') | ||
| else | ||
| local fontPaths = meta[kFontPaths] | ||
| if not fontPaths then | ||
| meta[kFontPaths] = {fontdir} | ||
| -- alas, lua cannot change ts metadata? | ||
| -- at least, this is not seen at command/render/output-typst.ts | ||
| end | ||
| -- lots of other cases here to politely upgrade nil -> str -> array | ||
| end | ||
| end | ||
| return meta | ||
| end | ||
| end | ||
| } | ||
| end | ||
|
|
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