Update repository.json

setting to increase font scale

MarkdownLivePreview.py

@@ -20,6 +20,7 @@ from .markdown2html import markdown2html
 MARKDOWN_VIEW_INFOS = "markdown_view_infos"
 PREVIEW_VIEW_INFOS = "preview_view_infos"
 SETTING_DELAY_BETWEEN_UPDATES = "delay_between_updates"
+SETTING_FONT_SCALE = "font_scale"
 
 resources = {}
 
@@ -201,7 +202,12 @@ class MarkdownLivePreviewListener(sublime_plugin.EventListener):
         # This check is needed since a this function is used as a callback for when images
         # are loaded from the internet (ie. it could finish loading *after* the user
         # closes the markdown_view)
-        if time.time() - self.last_update < DELAY / 1000:
+        # Reload settings each time to catch changes
+        settings = get_settings()
+        delay = settings.get(SETTING_DELAY_BETWEEN_UPDATES, 100) # Provide default
+        font_scale = settings.get(SETTING_FONT_SCALE, 1.0) # Provide default
+
+        if time.time() - self.last_update < delay / 1000:
             return
 
         if markdown_view.buffer_id() == 0:
@@ -213,15 +219,19 @@ class MarkdownLivePreviewListener(sublime_plugin.EventListener):
         markdown = markdown_view.substr(total_region)
 
         preview_view = markdown_view.window().active_view_in_group(1)
-        viewport_width = preview_view.viewport_extent()[0]
+        # Get viewport_width, default to a large value if view isn't ready
+        viewport_extent = preview_view.viewport_extent()
+        viewport_width = viewport_extent[0] if viewport_extent else 1024
 
-        basepath = os.path.dirname(markdown_view.file_name())
+
+        basepath = os.path.dirname(markdown_view.file_name()) if markdown_view.file_name() else '.' # Handle unsaved files
         html = markdown2html(
             markdown,
             basepath,
             partial(self._update_preview, markdown_view),
             resources,
             viewport_width,
+            font_scale,
         )
 
         self.phantom_sets[markdown_view.id()].update(

MarkdownLivePreview.sublime-settings

@@ -1,4 +1,7 @@
 {
 	// minimum number of milliseconds to wait before updating the preview again
-	"delay_between_updates": 100
+	"delay_between_updates": 100,
+
+	// scale factor for the font size relative to markdown settings
+	"font_scale": 1.0
 }

README.md

@@ -42,4 +42,24 @@ $ grep -R FIXME
 2. Make your own branch (the name of the branch should be the feature you are
    implementing eg. `improve-tables`, `fix-crash-on-multiple-preview`
 3. All your code should be formated by black.
-4. Send a PR!
+4. Send a PR!
+
+### Known limitations
+
+#### Numbered lists are rendered as unordered lists
+
+```md
+1. first
+2. second
+3. third
+```
+
+will be previewed the exact same way as
+
+```md
+- first
+- second
+- third
+```
+
+The issue comes from [Sublime Text's minihtml](https://www.sublimetext.com/docs/3/minihtml.html) which [doesn't support ordered lists](https://github.com/sublimehq/sublime_text/issues/1767). If you think feel like implementing a workaround, feel free to contribute, but it's not something I'm planning on doing. It isn't a critical feature, and support should come with time...

channel.json

@@ -0,0 +1,7 @@
+{
+  "$schema": "sublime://packagecontrol.io/schemas/channel",
+  "schema_version": "4.0.0",
+  "repositories": [
+    "https://git.0x42.cloud/christian.morpurgo/MarkdownLivePreview/raw/branch/master/repository.json"
+  ]
+}

markdown2html.py

@@ -25,7 +25,7 @@ markdowner = Markdown(extras=["fenced-code-blocks", "cuddled-lists"])
 #        does it stupidly throw them out? (we could implement something of our own)
 executor = concurrent.futures.ThreadPoolExecutor(max_workers=5)
 
-def markdown2html(markdown, basepath, re_render, resources, viewport_width):
+def markdown2html(markdown, basepath, re_render, resources, viewport_width, font_scale=1.0):
     """ converts the markdown to html, loads the images and puts in base64 for sublime
     to understand them correctly. That means that we are responsible for loading the
     images from the internet. Hence, we take in re_render, which is just a function we 
@@ -84,7 +84,11 @@ def markdown2html(markdown, basepath, re_render, resources, viewport_width):
     # FIXME: highlight the code using Sublime's syntax
 
     # FIXME: report that ST doesn't support <br/> but does work with <br />... WTF?
-    return "<style>\n{}\n</style>\n\n{}".format(resources["stylesheet"], soup).replace(
+    # Add font scaling CSS rule
+    font_scale_css = "body {{ font-size: {}em; }}\n".format(font_scale)
+    stylesheet = font_scale_css + resources["stylesheet"]
+
+    return "<style>\n{}\n</style>\n\n{}".format(stylesheet, soup).replace(
         "<br/>", "<br />"
     )
 
@@ -218,4 +222,5 @@ def independent_markdown2html(markdown):
             "stylesheet": "",
         },
         960,
+        1.0, # Add default font_scale for independent call
     )

repository.json

@@ -0,0 +1,19 @@
+{
+  "schema_version": "3.0.0",
+  "packages": [
+    {
+      "name": "MarkdownLivePreview-Fork",
+      "description": "My enhanced live-preview fork of MarkdownLivePreview",
+      "author": "Christian Morpurgo",
+      "homepage": "https://git.0x42.cloud/christian.morpurgo/MarkdownLivePreview",
+      "releases": [
+        {
+          "version": "4.0.0",
+          "url": "https://git.0x42.cloud/christian.morpurgo/MarkdownLivePreview/archive/v4.0.0.zip",
+          "date": "2025-04-24 00:00:00",
+          "sublime_text": "*"
+        }
+      ]
+    }
+  ]
+}