add extensions

_extensions/shafayetShafee/reveal-header/reveal-header.lua

@@ -0,0 +1,117 @@
+--[[
+MIT License
+
+Copyright (c) 2023 Shafayet Khan Shafee
+
+Permission is hereby granted, free of charge, to any person obtaining a copy
+of this software and associated documentation files (the "Software"), to deal
+in the Software without restriction, including without limitation the rights
+to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+copies of the Software, and to permit persons to whom the Software is
+furnished to do so, subject to the following conditions:
+
+The above copyright notice and this permission notice shall be included in all
+copies or substantial portions of the Software.
+
+THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+SOFTWARE.
+]]--
+
+
+local function ensureHtmlDeps()
+  quarto.doc.add_html_dependency({
+    name = "reveal-header",
+    version = "1.0.0",
+    scripts = {
+        { path = "resources/js/add_header.js", attribs = {defer = "true"}}
+      },
+    stylesheets = {"resources/css/add_header.css"}
+  })
+end
+
+local function sc_sb_title()
+  quarto.doc.add_html_dependency({
+    name = "sc-sb-title",
+    version = "1.0.0",
+    scripts = {
+        { path = "resources/js/sc_sb_title.js", attribs = {defer = "true"}}
+      }
+  })
+end
+
+local function grid_htext()
+  quarto.doc.add_html_dependency({
+  name = "grid-htext",
+  version = "1.0.0",
+  stylesheets = {"resources/css/grid_htext.css"}
+})
+end
+
+local function grid_no_htext()
+  quarto.doc.add_html_dependency({
+  name = "grid-no-htext",
+  version = "1.0.0",
+  stylesheets = {"resources/css/grid_no_htext.css"}
+})
+end
+
+
+if quarto.doc.is_format('revealjs') then
+  -- Ensuring the dependencies got loaded before proceeding
+  ensureHtmlDeps()
+  function Pandoc(doc)
+    local blocks = doc.blocks
+    local str = pandoc.utils.stringify
+    local meta = doc.meta
+    if meta['sc-sb-title'] then
+      sc_sb_title()
+    end
+    if meta['header'] then
+      grid_htext()
+    else
+      grid_no_htext()
+    end
+    local header_text = meta['header'] and str(meta['header']) or " "
+    local header_para_class = {class = "header-text"}
+    if meta['title-as-header'] then
+      header_text = meta['title']
+      header_para_class = {class = "header-text title-text"}
+    end
+    if meta['subtitle-as-header'] then
+      header_text = meta['subtitle']
+      header_para_class = {class = "header-text title-text"}
+    end
+    -- make divs structure for holding text and logo.
+    local header_logo = meta['header-logo'] and str(meta['header-logo']) or ""
+    local header_img = pandoc.Div(pandoc.Image("", header_logo, ""), {class = "header-logo"})
+    local header_section = pandoc.Div(pandoc.Para(" "), {class = "sc-title"})
+    local header_sbsection = pandoc.Div(pandoc.Para(" "), {class = "sb-title"})
+    local header_para = pandoc.Div(pandoc.Para(header_text), header_para_class)
+    if meta['hide-from-titleSlide'] then
+      local hide = str(meta['hide-from-titleSlide'])
+      if hide == "text" then
+        header_para.attributes['hide-from-titleslide'] = "true"
+      elseif hide == "logo" then
+        header_img.attributes['hide-from-titleslide'] = "true"
+      elseif hide == "all" then
+        header_para.attributes['hide-from-titleslide'] = "true"
+        header_img.attributes['hide-from-titleslide'] = "true"
+      end
+    end
+    local div = pandoc.Div(
+      {
+        header_img,
+        header_section,
+        header_para,
+        header_sbsection
+      }, 
+      {class = 'reveal-header'})
+    table.insert(blocks, div)
+    return doc
+  end
+end