[Feat] add `bg_x_padding`, `bg_y_padding` and `bg_padding` to allows users can customize background padding of snapshot (#112)

* [Feat] add config allow users can customize background padding

* [Update] rename config items which related background config

* [Update] add config to allow users customize the padding of background

README.md

@@ -324,7 +324,23 @@ require("codesnap").setup({
 
 ![CodeSnap](https://github.com/mistricky/codesnap.nvim/assets/22574136/a600c2e4-4c60-4ec0-b2fc-3b41481048dc)
 
+### Customize background padding
+CodeSnap allows you to customize the padding of background using `bg_x_padding`, `bg_y_padding` and `bg_padding`, the default value is:
+```lua
+require("codesnap").setup({
+  bg_x_padding = 122,
+  bg_y_padding = 82,
+  bg_padding = null
+})
+```
 
+If you want to hide background, you can set `bg_padding` to `0` in your config:
+```lua
+require("codesnap").setup({
+  -- ...
+  bg_padding = 0
+})
+```
 
 ## Watermark
 Watermark is something that makes screenshots more personalized, but if you don't like watermark just set it as an empty string to hide it.
@@ -370,7 +386,10 @@ There is a default config:
     breadcrumbs_separator = "/",
     has_breadcrumbs = false,
     has_line_number = false,
-    min_width = 0
+    show_workspace = false,
+    min_width = 0,
+    bg_x_padding = 122,
+    bg_y_padding = 82,
 }
 ```
 

generator/src/components/background.rs

@@ -4,7 +4,7 @@ use tiny_skia::{
 
 use crate::{
     color::{is_valid_hex_color, RgbaColor},
-    edges::padding::Padding,
+    edges::{edge::Edge, padding::Padding},
 };
 
 use super::interface::{
@@ -15,16 +15,33 @@ use super::interface::{
 
 pub struct Background {
     children: Vec<Box<dyn Component>>,
-    has_background: bool,
+    padding: Padding,
 }
 
 impl Background {
-    pub fn new(has_background: bool, children: Vec<Box<dyn Component>>) -> Background {
-        Background {
-            children,
-            has_background,
+    pub fn new(padding: Padding, children: Vec<Box<dyn Component>>) -> Background {
+        Background { children, padding }
+    }
+
+    pub fn parse_background_padding(
+        horizontal_background_padding: f32,
+        vertical_background_padding: f32,
+        background_padding: Option<f32>,
+    ) -> Padding {
+        match background_padding {
+            Some(padding) => Padding::from_value(padding),
+            None => Padding {
+                top: vertical_background_padding,
+                bottom: vertical_background_padding,
+                left: horizontal_background_padding,
+                right: horizontal_background_padding,
+            },
         }
     }
+
+    pub fn has_background(padding: &Padding) -> bool {
+        return padding.horizontal() != 0. || padding.vertical() != 0.;
+    }
 }
 
 impl Component for Background {
@@ -33,22 +50,13 @@ impl Component for Background {
     }
 
     fn style(&self) -> RawComponentStyle {
-        let style = RawComponentStyle::default().align(ComponentAlign::Column);
-
-        if self.has_background {
-            return style.padding(Padding {
-                top: 82.,
-                left: 122.,
-                right: 122.,
-                bottom: 82.,
-            });
-        }
-
-        return style;
+        RawComponentStyle::default()
+            .align(ComponentAlign::Column)
+            .padding(self.padding.clone())
     }
 
     fn self_render_condition(&self) -> bool {
-        self.has_background
+        Self::has_background(&self.padding)
     }
 
     fn draw_self(

generator/src/config.rs

@@ -30,7 +30,9 @@ pub struct TakeSnapshotParams {
     pub highlight_start_line_number: Option<usize>,
     pub highlight_end_line_number: Option<usize>,
     pub min_width: Option<f32>,
-    pub has_background: bool,
+    pub bg_x_padding: f32,
+    pub bg_y_padding: f32,
+    pub bg_padding: Option<f32>,
 }
 
 impl FromObject for TakeSnapshotParams {

generator/src/snapshot.rs

@@ -19,6 +19,7 @@ use crate::config::TakeSnapshotParams;
 // Scale the screenshot to 3 times its size
 const SCALE_FACTOR: f32 = 3.;
 const LINE_HEIGHT: f32 = 20.;
+const VIEW_WATERMARK_PADDING: f32 = 82.;
 
 // The params is come from neovim instance
 pub fn take_snapshot(params: TakeSnapshotParams) -> render_error::Result<Pixmap> {
@@ -26,15 +27,21 @@ pub fn take_snapshot(params: TakeSnapshotParams) -> render_error::Result<Pixmap>
         scale_factor: SCALE_FACTOR,
         take_snapshot_params: Arc::new(params.clone()),
     };
-    // If background is disabled, should hidden watermark component
+    let background_padding = Background::parse_background_padding(
+        params.bg_x_padding,
+        params.bg_y_padding,
+        params.bg_padding,
+    );
+
+    // If vertical background padding is less than 82., should hidden watermark component
     // If watermark text is equal to "", the watermark component is hidden
-    let watermark = if params.has_background {
+    let watermark = if background_padding.bottom >= VIEW_WATERMARK_PADDING {
         params.watermark
     } else {
         "".to_string()
     };
     let pixmap = Container::from_children(vec![Box::new(Background::new(
-        params.has_background,
+        background_padding,
         vec![
             Box::new(Rect::new(
                 16.,

lua/codesnap/config.lua

@@ -49,7 +49,6 @@ function config_module.get_config(extension)
     theme = "base16-onedark",
     file_path = static.config.has_breadcrumbs and get_file_path(static.config.show_workspace) or "",
     start_line_number = static.config.has_line_number and start_line_number or nil,
-    has_background = true,
   }, static.config)
 
   config.save_path = parse_save_path(config.save_path)

lua/codesnap/static.lua

@@ -13,6 +13,8 @@ return {
     has_line_number = false,
     show_workspace = false,
     min_width = 0,
+    bg_x_padding = 122,
+    bg_y_padding = 82,
   },
   cwd = path_utils.back(path_utils.back(debug.getinfo(1, "S").source:sub(2):match("(.*[/\\])"))),
   preview_switch = true,