add "material-nf" icon set, add icons_format config option

README.md

@@ -64,7 +64,8 @@ There are some top-level configuration variables:
 
 Key | Description | Required | Default
 ----|-------------|----------|--------
-`icons` | The icon set that should be used. Possible values are `none`, `awesome`, `awesome5` and `material`. Check [themes.md](https://github.com/greshake/i3status-rust/blob/master/themes.md) for more information | No | `none`
+`icons` | The icon set that should be used. Possible values are `none`, `awesome`, `awesome5`, `material` and `material-nf`. Check [themes.md](https://github.com/greshake/i3status-rust/blob/master/themes.md) for more information | No | `none`
+`icons_format` | A string to customise the appearance of each icon. Can be used to edit icons' spacing or specify a font that will be applied only to icons via pango markup. For example, set it to `" <span font_family='NotoSans Nerd Font'>{icon}</span> "` to set font of the icons to be 'NotoSans Nerd Font' | No | `" {icon} "`
 `theme` | The predefined theme that should be used. You can also add your own overrides. Check [themes.md](https://github.com/greshake/i3status-rust/blob/master/themes.md) for all available themes. | No | `plain`
 `scrolling` | The direction of scrolling, either `natural` or `reverse` | No | `reverse`
 `block` | All blocks that will exist in your i3bar. Check [blocks.md](https://github.com/greshake/i3status-rust/blob/master/blocks.md) for all blocks and their parameters. | No | none

src/blocks.rs

@@ -188,6 +188,9 @@ macro_rules! block {
         if let Some(ref overrides) = common_config.theme_overrides {
             $shared_config.theme_override(overrides)?;
         }
+        if let Some(overrides) = common_config.icons_format {
+            $shared_config.icons_format_override(overrides);
+        }
 
         // Extract block-specific config
         let block_config = <$block_type as ConfigBlock>::Config::deserialize($block_config)

src/blocks/backlight.rs

@@ -299,13 +299,24 @@ impl Block for Backlight {
         if self.invert_icons {
             brightness = 100 - brightness;
         }
-        match brightness {
-            0..=19 => self.output.set_icon("backlight_empty"),
-            20..=39 => self.output.set_icon("backlight_partial1"),
-            40..=59 => self.output.set_icon("backlight_partial2"),
-            60..=79 => self.output.set_icon("backlight_partial3"),
-            _ => self.output.set_icon("backlight_full"),
-        }
+        self.output.set_icon(match brightness {
+            0..=6 => "backlight_empty",
+            7..=13 => "backlight_1",
+            14..=20 => "backlight_2",
+            21..=26 => "backlight_3",
+            27..=33 => "backlight_4",
+            34..=40 => "backlight_5",
+            41..=46 => "backlight_6",
+            47..=53 => "backlight_7",
+            54..=60 => "backlight_8",
+            61..=67 => "backlight_9",
+            68..=73 => "backlight_10",
+            74..=80 => "backlight_11",
+            81..=87 => "backlight_12",
+            88..=93 => "backlight_13",
+            _ => "backlight_full",
+        });
+
         Ok(None)
     }
 

src/blocks/base_block.rs

@@ -57,10 +57,11 @@ pub(super) struct BaseBlockConfig {
     pub on_click: Option<String>,
 
     pub theme_overrides: Option<HashMap<String, String>>,
+    pub icons_format: Option<String>,
 }
 
 impl BaseBlockConfig {
-    const FIELDS: &'static [&'static str] = &["on_click", "theme_overrides"];
+    const FIELDS: &'static [&'static str] = &["on_click", "theme_overrides", "icons_format"];
 
     // FIXME: this function is to paper over https://github.com/serde-rs/serde/issues/1957
     pub(super) fn extract(config: &mut Value) -> Value {

src/config.rs

@@ -14,12 +14,11 @@ use crate::icons;
 use crate::input::MouseButton;
 use crate::themes::Theme;
 
-////////////////
-
 #[derive(Debug)]
 pub struct SharedConfig {
     pub theme: Rc<Theme>,
-    pub icons: Rc<HashMap<String, String>>,
+    icons: Rc<HashMap<String, String>>,
+    icons_format: String,
     pub scrolling: Scrolling,
 }
 
@@ -28,10 +27,15 @@ impl SharedConfig {
         Self {
             theme: Rc::new(config.theme.clone()),
             icons: Rc::new(config.icons.clone()),
+            icons_format: config.icons_format.clone(),
             scrolling: config.scrolling,
         }
     }
 
+    pub fn icons_format_override(&mut self, icons_format: String) {
+        self.icons_format = icons_format;
+    }
+
     pub fn theme_override(&mut self, overrides: &HashMap<String, String>) -> errors::Result<()> {
         let mut theme = self.theme.as_ref().clone();
         for entry in overrides {
@@ -59,7 +63,11 @@ impl SharedConfig {
     }
 
     pub fn get_icon(&self, icon: &str) -> Option<String> {
-        self.icons.get(icon).map(|s| s.to_string())
+        Some(
+            self.icons_format
+                .clone()
+                .replace("{icon}", self.icons.get(icon)?),
+        )
     }
 }
 
@@ -68,6 +76,7 @@ impl Default for SharedConfig {
         Self {
             theme: Rc::new(Theme::default()),
             icons: Rc::new(icons::default()),
+            icons_format: " {icon} ".to_string(),
             scrolling: Scrolling::default(),
         }
     }
@@ -78,13 +87,12 @@ impl Clone for SharedConfig {
         Self {
             theme: Rc::clone(&self.theme),
             icons: Rc::clone(&self.icons),
+            icons_format: self.icons_format.clone(),
             scrolling: self.scrolling,
         }
     }
 }
 
-///////////////////
-
 #[derive(Deserialize, Debug, Clone)]
 pub struct Config {
     #[serde(default = "icons::default", deserialize_with = "deserialize_icons")]
@@ -93,6 +101,9 @@ pub struct Config {
     #[serde(default = "Theme::default")]
     pub theme: Theme,
 
+    #[serde(default = "Config::default_icons_format")]
+    pub icons_format: String,
+
     #[serde(default = "Scrolling::default")]
     pub scrolling: Scrolling,
     /// Direction of scrolling, "natural" or "reverse".
@@ -104,11 +115,18 @@ pub struct Config {
     pub blocks: Vec<(String, value::Value)>,
 }
 
+impl Config {
+    fn default_icons_format() -> String {
+        " {icon} ".to_string()
+    }
+}
+
 impl Default for Config {
     fn default() -> Self {
         Config {
             icons: icons::default(),
             theme: Theme::default(),
+            icons_format: Config::default_icons_format(),
             scrolling: Scrolling::default(),
             blocks: Vec::new(),
         }