add 404 error

MarkdownLivePreview.tasks

@@ -1,11 +1,10 @@
 todo:
 
-
-  ☐ add message in status bar @notGoodIdea
-
   ☐ add **custom css** feature
-  ☐ sync scroll
+  ☐ sync scroll @needsUpdate
+  ☐ load images from internet (`https:`)
   ☐ regive focus to the right markdown view
   ☐ set the title of the preview
   ☐ disable previewing when the preview is closed
   ☐ preview.set_scratch(True)
+  ☐ add 404 image

md_in_popup.py

@@ -34,6 +34,9 @@ def get_content_till(string, char_to_look_for, start=0):
             return string[start:i], i
 
 def to_base64(path):
+    if not os.path.exists(path):
+        return to_base64(os.path.join(os.path.dirname(__file__), '404.png'))
+
     with open(path, 'rb') as fp:
         content = fp.read()
     return base64.standard_b64encode(content)

sample.md

@@ -1 +1,3 @@
-![my_img](C:\Users\math\Pictures\Img-style\ASCII.png)
+![my_img](C:\Users\math\Pictures\Img-style\Fencedf.png)
+
+this is a test