new gui module text box implementation

starting to work on the new UI library, got labels and text boxes working as well as containers for widgets.

planning a big refactor

src/user/lib/libgui/cg_widgets.rs

@@ -0,0 +1,234 @@
+use alloc::{
+    boxed::Box,
+    string::String,
+    vec,
+    vec::Vec,
+};
+use crate::serial_println;
+use super::cg_core::{
+    Position, Dimensions, ColouredChar, CgComponent, CgOutline, Frame, GuiError,
+};
+
+
+
+
+pub struct CgContainer {
+    pub elements: Vec<Box<dyn CgComponent>>,
+    pub position: Position,
+    pub dimensions: Dimensions,
+    pub outlined: bool,
+}
+
+impl CgContainer {
+    pub fn new(position: Position, dimensions: Dimensions, outlined: bool) -> CgContainer {
+        CgContainer {
+            elements: Vec::new(),
+            position,
+            dimensions,
+            outlined,
+        }
+    }
+}
+
+impl CgOutline for CgContainer {
+    fn render_outline(&self, frame: &mut Frame) {
+        // draws the sides of the container
+        for i in 0..frame.dimensions.x {
+            frame.set_pos(Position::new(i, 0), ColouredChar::white('─'));
+            frame.set_pos(Position::new(i, frame.dimensions.y - 1), ColouredChar::white('─'));
+        }
+
+        // draws the top and bottom of the container
+        for i in 0..frame.dimensions.y {
+            frame.set_pos(Position::new(0, i), ColouredChar::white('│'));
+            frame.set_pos(Position::new(frame.dimensions.x - 1, i), ColouredChar::white('│'));
+        }
+
+        // draws the corners of the container
+        frame.set_pos(Position::new(0, 0), ColouredChar::white('┌'));
+        frame.set_pos(Position::new(self.dimensions.x - 1, 0), ColouredChar::white('┐'));
+        frame.set_pos(Position::new(0, self.dimensions.y - 1), ColouredChar::white('└'));
+        frame.set_pos(Position::new(self.dimensions.x - 1, self.dimensions.y - 1), ColouredChar::white('┘'));
+    }
+}
+
+impl CgComponent for CgContainer {
+    fn render(&self) -> Result<Frame, GuiError> {
+        let mut result = Frame::new(self.position, self.dimensions)?;
+
+        for widget in &self.elements {
+            let frame = widget.render()?;
+            match result.render_bounds_check(&frame, true) { // TODO: this needs to be set to false for production
+                Ok(()) => result.render_element(&frame),
+                Err(e) => return Err(GuiError::OutOfBounds(e)),
+            }
+        }
+
+        if self.outlined {
+            self.render_outline(&mut result);
+        }
+
+        Ok(result)
+    }
+}
+
+
+pub struct CgTextBox {
+    title: String,
+    content: String,
+    pub position: Position,
+    pub dimensions: Dimensions,
+    outlined: bool,
+}
+
+impl CgTextBox {
+    pub fn new(title: String, content: String, position: Position, dimensions: Dimensions, outlined: bool) -> CgTextBox {
+        CgTextBox { title, content, position, dimensions, outlined }
+    }
+}
+
+impl CgComponent for CgTextBox {
+    fn render(&self) -> Result<Frame, GuiError> {
+        let mut result = Frame::new(self.position, self.dimensions)?;
+
+        if self.outlined {
+            self.render_outline(&mut result);
+        }
+
+        let title = self.title.chars();
+        for (i, c) in title.enumerate() {
+            if i + 2 == self.dimensions.x - 3 { // we dont want to write at the top of the text box
+                result.set_pos(Position::new(i + 1, 0), ColouredChar::white('.'));
+            } else if i + 2 >= self.dimensions.x - 2 {
+                result.set_pos(Position::new(i + 1, 0), ColouredChar::white('.'));
+                break;
+
+            }
+            result.set_pos(Position::new(i + 2, 0), ColouredChar::white(c));
+        }
+
+        let (mut x, mut y) = (1,1);
+
+        for c in self.content.chars() {
+            if x == self.dimensions.x - 1 {
+                x = 1;
+                y += 1;
+                if c == ' ' {
+                    continue;
+                }
+            }
+            if y == self.dimensions.y - 1 {
+                if c != ' ' {
+                    (2..5).for_each(|z| {
+                        result.set_pos(Position::new(self.dimensions.x - z, self.dimensions.y -1), ColouredChar::white('.'));
+                    })
+                }
+                break;
+            }
+
+            result.set_pos(Position::new(x, y), ColouredChar::white(c));
+            x += 1;
+        };
+
+        Ok(result)
+    }
+}
+
+impl CgOutline for CgTextBox {
+    fn render_outline(&self, frame: &mut Frame) {
+        // draws the sides of the container
+        for i in 0..frame.dimensions.x {
+            frame.set_pos(Position::new(i, 0), ColouredChar::white('─'));
+            frame.set_pos(Position::new(i, frame.dimensions.y - 1), ColouredChar::white('─'));
+        }
+
+        // draws the top and bottom of the container
+        for i in 0..frame.dimensions.y {
+            frame.set_pos(Position::new(0, i), ColouredChar::white('│'));
+            frame.set_pos(Position::new(frame.dimensions.x - 1, i), ColouredChar::white('│'));
+        }
+
+        // draws the corners of the container
+        frame.set_pos(Position::new(0, 0), ColouredChar::white('┌'));
+        frame.set_pos(Position::new(self.dimensions.x - 1, 0), ColouredChar::white('┐'));
+        frame.set_pos(Position::new(0, self.dimensions.y - 1), ColouredChar::white('└'));
+        frame.set_pos(Position::new(self.dimensions.x - 1, self.dimensions.y - 1), ColouredChar::white('┘'));
+    }
+}
+
+
+
+
+
+pub struct CgLabel {
+    content: String,
+    position: Position,
+    dimensions: Dimensions,
+}
+
+impl CgLabel {
+    pub fn new(content: String, position: Position, width: usize) -> CgLabel {
+        CgLabel {
+            content,
+            position: Position::new(position.x, position.y),
+            dimensions: Dimensions::new(width, 1),
+        }
+    }
+}
+
+impl CgComponent for CgLabel {
+    fn render(&self) -> Result<Frame, GuiError> {
+        let mut result = Frame::new(self.position, self.dimensions)?;
+
+        let shortened_string = self.content.chars().take(self.dimensions.x).collect::<String>();
+
+        for (i, c) in shortened_string.chars().enumerate() {
+            result.set_pos(Position::new(i, 0), ColouredChar::white(c));
+        };
+
+        serial_println!("{:?}", result);
+
+        Ok(result)
+    }
+}
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