add gui in os

os/src/syscall/gui.rs

@@ -0,0 +1,51 @@
+use alloc::{sync::Arc, vec::{Vec, }, string::ToString};
+use embedded_graphics::{prelude::{Point, Size}, primitives::arc};
+
+use crate::{gui::{Component, Panel, ImageComp, IconController, Terminal, Button}, fs::ROOT_INODE, sync::UPIntrFreeCell};
+
+static DT: &[u8] = include_bytes!("../assert/desktop.bmp");
+
+lazy_static::lazy_static!(
+    pub static ref DESKTOP:UPIntrFreeCell<Arc<dyn Component>> = unsafe {
+        UPIntrFreeCell::new(Arc::new(Panel::new(Size::new(1024, 768), Point::new(0, 0))))
+    };
+    pub static ref PAD:UPIntrFreeCell<Option<Arc<Terminal>>> = unsafe {
+        UPIntrFreeCell::new(None)
+    };
+);
+
+pub fn create_desktop() -> isize {
+    let mut p:Arc<dyn Component + 'static> = Arc::new(Panel::new(Size::new(1024, 768), Point::new(0, 0)));
+    let image = ImageComp::new(Size::new(1024, 768),Point::new(0, 0),DT,Some(p.clone()));
+    let icon = IconController::new(ROOT_INODE.ls(), Some(p.clone()));
+    p.add(Arc::new(image));
+    p.add(Arc::new(icon));
+    let mut desktop = DESKTOP.exclusive_access();
+    *desktop = p;
+    desktop.paint();
+    drop(desktop);
+    create_terminal();
+    1
+}
+
+pub fn create_terminal() {
+    let desktop = DESKTOP.exclusive_access();
+    let arc_t = Arc::new(
+        Terminal::new(
+            Size::new(400, 400), 
+            Point::new(200, 100), 
+            Some(desktop.clone()), 
+            Some("demo.txt".to_string()),
+            "".to_string()
+        )
+    );
+    let text = Panel::new(Size::new(400, 400), Point::new(200, 100));
+    let button = Button::new(Size::new(20, 20), Point::new(370, 10), Some(arc_t.clone()), "X".to_string());
+    arc_t.add(Arc::new(text));
+    arc_t.add(Arc::new(button));
+    arc_t.paint();
+    desktop.add(arc_t.clone());
+    let mut pad = PAD.exclusive_access();
+    *pad = Some(arc_t);
+}
+