add feature:

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(