add additional settings to control the fonts used for markdown rendering

Author: kbjr

widget/src/markdown.rs

@@ -312,13 +312,14 @@ impl Span {
                 let span = span(text.clone()).strikethrough(*strikethrough);
 
                 let span = if *code {
-                    span.font(Font::MONOSPACE)
+                    span.font(style.inline_code_font)
                         .color(style.inline_code_color)
                         .background(style.inline_code_highlight.background)
                         .border(style.inline_code_highlight.border)
                         .padding(style.inline_code_padding)
                 } else if *strong || *emphasis {
                     span.font(Font {
+                        family: style.text_font_family,
                         weight: if *strong {
                             font::Weight::Bold
                         } else {
@@ -332,7 +333,10 @@ impl Span {
                         ..Font::default()
                     })
                 } else {
-                    span
+                    span.font(Font {
+                        family: style.text_font_family,
+                        ..Font::default()
+                    })
                 };
 
                 if let Some(link) = link.as_ref() {
@@ -1056,12 +1060,18 @@ impl From<Theme> for Settings {
 /// The text styling of some Markdown rendering in [`view`].
 #[derive(Debug, Clone, Copy, PartialEq)]
 pub struct Style {
+    /// The [`font::Family`] to be applied to non-code text.
+    pub text_font_family: font::Family,
     /// The [`Highlight`] to be applied to the background of inline code.
     pub inline_code_highlight: Highlight,
     /// The [`Padding`] to be applied to the background of inline code.
     pub inline_code_padding: Padding,
     /// The [`Color`] to be applied to inline code.
     pub inline_code_color: Color,
+    /// The [`Font`] to be applied to inline code.
+    pub inline_code_font: Font,
+    /// The [`Font`] to be applied to code blocks.
+    pub code_block_font: Font,
     /// The [`Color`] to be applied to links.
     pub link_color: Color,
 }
@@ -1070,12 +1080,15 @@ impl Style {
     /// Creates a new [`Style`] from the given [`theme::Palette`].
     pub fn from_palette(palette: theme::Palette) -> Self {
         Self {
+            text_font_family: font::Family::default(),
             inline_code_padding: padding::left(1).right(1),
             inline_code_highlight: Highlight {
                 background: color!(0x111).into(),
                 border: border::rounded(2),
             },
             inline_code_color: Color::WHITE,
+            inline_code_font: Font::MONOSPACE,
+            code_block_font: Font::MONOSPACE,
             link_color: palette.primary,
         }
     }
@@ -1357,7 +1370,7 @@ where
             container(column(lines.iter().map(|line| {
                 rich_text(line.spans(settings.style))
                     .on_link_click(on_link_click.clone())
-                    .font(Font::MONOSPACE)
+                    .font(settings.style.code_block_font)
                     .size(settings.code_size)
                     .into()
             })))