ported ming-os graphics to linux framebuffer

src/components/toggle_button.rs

@@ -0,0 +1,90 @@
+use std::vec;
+use std::vec::Vec;
+
+use crate::components::Component;
+use crate::framebuffer::{ Dimensions, Point };
+use crate::themes::ThemeInfo;
+use crate::messages::WindowMessage;
+use crate::window_manager::DrawInstructions;
+
+//we need a text width and height measure function first
+pub enum ToggleButtonAlignment {
+  Centre,
+  Left,
+}
+
+pub struct ToggleButton<T> {
+  name_: String,
+  top_left: Point,
+  size: Dimensions,
+  text: &'static str,
+  draw_bg: bool,
+  pub inverted: bool, //whether is it clicked or not
+  alignment: ToggleButtonAlignment,
+  click_return: T,
+  unclick_return: T,
+}
+
+impl<T: Clone> Component<T> for ToggleButton<T> {
+  fn handle_message(&mut self, message: WindowMessage) -> Option<T> {
+    match message {
+      WindowMessage::FocusClick => {
+        //we know this click was for this button, otherwise window wouldn't have given us this message
+        self.inverted = !self.inverted;
+        if self.inverted {
+          Some(self.click_return.clone())
+        } else {
+          Some(self.unclick_return.clone())
+        }
+      },
+      _ => None,
+    }
+  }
+
+  fn draw(&self, theme_info: &ThemeInfo) -> Vec<DrawInstructions> {
+    //to make sure the text gets vertically centred
+    let font_height = 15;
+    vec![
+      //top and left border
+      DrawInstructions::Rect(self.top_left, [self.size[0], 2], if self.inverted { theme_info.border_right_bottom } else { theme_info.border_left_top }),
+      DrawInstructions::Rect(self.top_left, [2, self.size[1]], if self.inverted { theme_info.border_right_bottom } else { theme_info.border_left_top }),
+      //right and bottom border
+      DrawInstructions::Rect([self.top_left[0] + self.size[0] - 2, self.top_left[1]], [2, self.size[1]], if self.inverted { theme_info.border_left_top } else { theme_info.border_right_bottom }),
+      DrawInstructions::Rect([self.top_left[0], self.top_left[1] + self.size[1] - 2], [self.size[0], 2], if self.inverted { theme_info.border_left_top } else { theme_info.border_right_bottom }),
+      //the background if self.draw_bg
+      //DrawInstructions::Rect(),
+      //the text (for now, hardcoded top left)
+      DrawInstructions::Text([self.top_left[0] + 4, self.top_left[1] + (self.size[1] - font_height) / 2], "times-new-roman", self.text.to_string(), theme_info.text, theme_info.background, None),
+    ]
+  }
+
+  //properties
+  fn focusable(&self) -> bool {
+    true
+  }
+
+  fn clickable(&self) -> bool {
+    true
+  }
+  
+  fn name(&self) -> &String {
+    &self.name_
+  }
+}
+
+impl<T> ToggleButton<T> {
+  pub fn new(name_: String, top_left: Point, size: Dimensions, text: &'static str, click_return: T, unclick_return: T, draw_bg: bool, alignment: Option<ToggleButtonAlignment>) -> Self {
+    Self {
+      name_,
+      top_left,
+      size,
+      text,
+      click_return,
+      unclick_return,
+      draw_bg,
+      inverted: false,
+      alignment: alignment.unwrap_or(ToggleButtonAlignment::Centre),
+    }
+  }
+}
+