Unexpected padding between formulas

[ringosham]

• Markwon version: 3.0.2
• Markwon Latex plugin version: 3.0.2
• Compiled SDK version: 28
• Android version: Pie (9)

1. Please specify expected/actual behavior
   There's extra padding between the formulas where there should be none.
   

2. Please specify conditions/steps to reproduce (layout, code, markdown used, etc)
   This is the code used in the activity.

@Override
protected void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);
    setContentView(R.layout.activity_main);
    TextView text = findViewById(R.id.test);
    Markwon markdown = Markwon.builder(this).usePlugin(ImagesPlugin.create(this)).usePlugin(JLatexMathPlugin.create(50)).build();
    markdown.setMarkdown(text, readMarkdownFile(R.raw.markdown));
}

public String readMarkdownFile(int resourceId) {
    InputStream in = getResources().openRawResource(resourceId);
    Scanner scan = new Scanner(in).useDelimiter("\\A");
    return scan.hasNext() ? scan.next() : "";
}

The markdown used.

$$
  P(X=r)=\frac{\lambda^r e^{-\lambda}}{r!}
$$

$$
  P(X<r)=P(X<r-1)
$$

$$
  P(X>r)=1-P(X<r=1)
$$

$$
  \text{Variance} = \lambda
$$

[noties]

Hello @ringosham !

I can reproduce this issue. This happens because JLatexMathPlugin relies on ImagesPlugin (all latex is displayed via AsyncDrawable). And internally we set image-size for a latex formula to be 100% of canvas width. Thus, image is scaled up whilst keeping the ratio (increase in both width and height), but this scaling is ignored by JLatexMathDrawable.

The solution would be of cause to stop relying on ImagesPlugin. And the good thing is: it is already done in upcoming 4.0.0 snapshot version. I'm going to fix this issue also. So, if you are only evaluating the project starting with the next 4.0.0 version might be a good idea (less migration).

I have also noticed that JLatexMathPlugin uses the same drawable for all latex formulas background and going to fix that also.

v4.0.0

[noties]

This issue is fixed in 4.0.0 version