updates

updated grapher to use new widtgets system (not working yet but close)

made a basic app using the widgets system

implemented CgTextEdit for CgLineEdit (now fully working, but there may be bugs so i'll address them tomorrow)

src/user/lib/libgui/cg_inputs.rs

@@ -3,6 +3,7 @@ use alloc::vec::Vec;
 use crate::std::frame::{ColouredChar, Dimensions, Frame, Position, RenderError};
 use crate::user::lib::libgui::cg_core::{CgComponent, CgTextEdit};
 
+#[derive(Debug, Clone)]
 pub struct CgLineEdit {
     pub position: Position,
     pub dimensions: Dimensions,
@@ -26,28 +27,56 @@ impl CgLineEdit {
 impl CgComponent for CgLineEdit {
     fn render(&self) -> Result<Frame, RenderError> {
         let mut frame = Frame::new(self.position, self.dimensions)?;
-
-        let mut ptr = 0;
+        let mut idx = 0;
 
         for c in self.prompt.chars() {
-            if ptr >= self.dimensions.x {
+            if idx >= self.dimensions.x {
                 break;
             }
-            frame.write(Position::new(ptr, 0), ColouredChar::new(c));
-            ptr += 1
+            frame.write(Position::new(idx, 0), ColouredChar::new(c));
+            idx += 1
         }
 
-        ptr += 1; // create a space between the prompt and the text
+        idx += 1; // create a space between the prompt and the text
 
-        for c in self.text.iter() {
-            if ptr >= self.dimensions.x {
-                break;
-            }
-            frame.write(Position::new(ptr, 0), ColouredChar::new(*c));
-            ptr += 1
+        if idx + self.text.len() > self.dimensions.x {
+            frame.write(Position::new(idx, 0), ColouredChar::new('['));
+            frame.write(Position::new(idx + 1, 0), ColouredChar::new('.'));
+            frame.write(Position::new(idx + 2, 0), ColouredChar::new('.'));
+            frame.write(Position::new(idx + 3, 0), ColouredChar::new('.'));
+            frame.write(Position::new(idx + 4, 0), ColouredChar::new(']'));
+            idx += 5
         }
 
+
+        self.text.iter().rev().take(self.dimensions.x - idx).rev().for_each(|c| {
+            frame.write(Position::new(idx, 0), ColouredChar::new(*c));
+            idx += 1
+        });
+
         Ok(frame)
     }
 }
 
+impl CgTextEdit for CgLineEdit {
+    fn write_char(&mut self, c: char) {
+        self.text.insert(self.ptr, c);
+        self.ptr += 1;
+    }
+    fn backspace(&mut self) {
+        if self.ptr >= 0 {
+            self.ptr -= 1;
+            self.text.remove(self.ptr);
+        }
+    }
+    fn move_cursor(&mut self, direction: bool) {
+        match direction {
+            true => if self.ptr < self.text.len() { self.ptr += 1; },
+            false => if self.ptr > 0 { self.ptr -= 1; },
+        }
+    }
+    fn clear(&mut self) {
+        self.text.clear();
+        self.ptr = 0
+    }
+}