working render

src/app.c

@@ -4,15 +4,8 @@
 #include <pthread.h>
 #include <time.h>
 
-typedef struct
+extern boolean_t render(void* element);
-{
+extern void *event_loop(void* element);
-    uint32_t* state;
-    void* element;
-} EventArgs;
-
-extern void render(void* element, uint32_t state);
-extern void event(void* element, uint32_t* state);
-extern void init_event(void* element, uint32_t* state);
 
 void sleep_ms(long milliseconds)
 {
@@ -22,49 +15,18 @@ void sleep_ms(long milliseconds)
     nanosleep(&ts, NULL);
 }
 
-void *event_checker(void *args)
-{
-    EventArgs* event_args = (EventArgs*)args;
-    init_event(event_args->element, event_args->state);
-    while (1) {
-        if (event_args->state == 0) { return NULL; }
-        event(event_args->element, event_args->state);
-    }
-    return NULL;
-}
-
-void *command_checker(void *args)
-{
-    EventArgs* event_args = (EventArgs*)args;
-    init_event(event_args->element, event_args->state);
-    while (1) {
-        if (event_args->state == 0) { return NULL; }
-        event(event_args->element, event_args->state);
-    }
-    return NULL;
-}
-
 boolean_t c_run(void* element)
 {
     pthread_t thread;
-    uint32_t state = 3;
-    EventArgs event_args = { .element = element, .state = &state };
 
-    if (pthread_create(&thread, NULL, event_checker, &event_args) != 0)
+    if (pthread_create(&thread, NULL, event_loop, element) != 0)
     {
         perror("Failed to create thread");
     }
 
-    while (1)
+    while (render(element))
     {
-        if (state == 0) {
-            free(element);
-            return 0;
-        } else if (state == 1) {
-            free(element);
-            return 1;
-        }
-        render(element, state);
         sleep_ms(20);
     }
+    return 0;
 }

src/app.rs

@@ -1,52 +1,55 @@
-use crossterm::terminal::{disable_raw_mode, enable_raw_mode};
+use crossterm::{
+    event::Event,
+    terminal::{disable_raw_mode, enable_raw_mode},
+};
 
 use crate::{
     utils::{clear, create_frame, flush, get_term_size, hide_cursor, render_to_frame, show_cursor},
-    Element, State, StateChanger,
+    Element, StateChanger,
 };
-use std::ffi::c_void;
+use std::{ffi::c_void, ptr::null};
 
 extern "C" {
     fn c_run(element: *mut c_void) -> bool;
 }
 
 #[no_mangle]
-pub extern "C" fn render(ptr: *mut c_void, state: u32) {
+extern "C" fn render(ptr: *mut c_void) -> bool {
-    let element = unsafe {
+    if ptr.is_null() {
-        assert!(!ptr.is_null(), "Pointer is null");
+        return false;
-        &mut *(ptr as *mut Element)
+    }
-    };
+    let element = unsafe { &mut *(ptr as *mut Element) };
     let (width, height) = get_term_size();
     let mut frame: Vec<String> = create_frame(width, height);
-    render_to_frame(State::from_u32(state), width, &mut frame, element);
+    render_to_frame(true, width, &mut frame, element);
     clear();
     print!("{}", frame.join(""));
     flush();
+    true
 }
 
 #[no_mangle]
-pub extern "C" fn event(ptr: *mut c_void, state: *mut u32) {
+extern "C" fn event_loop(ptr: *mut c_void) -> *const c_void {
-    let event = crossterm::event::read().unwrap();
+    if ptr.is_null() {
-    let element = unsafe {
+        return null() as *const c_void;
-        assert!(!ptr.is_null(), "Pointer is null");
+    }
-        &mut *(ptr as *mut Element)
+    let element = unsafe { &mut *(ptr as *mut Element) };
-    };
+    let (width, height) = get_term_size();
+    element.update_data(width, height);
+    loop {
+        if ptr.is_null() {
+            break;
+        }
+        event(element, crossterm::event::read().unwrap())
+    }
+    null() as *const c_void
+}
+
+fn event(element: &mut Element, event: Event) {
     if let crossterm::event::Event::Resize(width, height) = event {
         element.update_data(width as usize, height as usize);
     }
-    element.event(event, &StateChanger(state));
+    element.event(event, &StateChanger(&mut 0));
-}
-
-#[no_mangle]
-pub extern "C" fn init_event(ptr: *mut c_void, state: *mut u32) {
-    let event = crossterm::event::Event::FocusGained;
-    let element = unsafe {
-        assert!(!ptr.is_null(), "Pointer is null");
-        &mut *(ptr as *mut Element)
-    };
-    let (width, height) = get_term_size();
-    element.update_data(width, height);
-    element.event(event, &StateChanger(state));
 }
 
 pub fn run(element: &mut Element) -> bool {
@@ -55,9 +58,11 @@ pub fn run(element: &mut Element) -> bool {
     clear();
     unsafe {
         let c = c_run(element as *mut Element as *mut c_void);
+        if !c {
             show_cursor();
             disable_raw_mode().unwrap();
             clear();
+        }
         return c;
     }
 }

src/lib.rs

@@ -94,8 +94,8 @@ pub trait ElementCore: Send + Sync {
 }
 
 pub trait Component: ElementCore + std::fmt::Debug {
-    fn render(&self, state: State) -> String {
+    fn render(&self, focused: bool) -> String {
-        _ = state;
+        _ = focused;
         String::new()
     }
 

src/ui/mod.rs

@@ -29,7 +29,7 @@ use osui_element::{elem_fn, element};
 pub struct Text {}
 
 impl Component for Text<'_> {
-    fn render(&self, _: crate::State) -> String {
+    fn render(&self, _: bool) -> String {
         if let Children::Text(text) = &self.children {
             text.clone()
         } else {
@@ -66,23 +66,19 @@ pub struct Div {
 }
 
 impl Component for Div<'_> {
-    fn render(&self, state: State) -> String {
+    fn render(&self, focused: bool) -> String {
         let mut frame = crate::utils::create_frame(self.width.get_value(), self.height.get_value());
 
         if let Children::Children(children, child) = &self.children {
             for (i, elem) in children.iter().enumerate() {
-                if i == *child {
-                    crate::utils::render_to_frame(state, self.width.get_value(), &mut frame, elem);
-                } else {
                 crate::utils::render_to_frame(
-                        crate::State::Normal,
+                    focused && i == *child,
                     self.width.get_value(),
                     &mut frame,
                     elem,
                 );
             }
         }
-        }
 
         frame.join("\n")
     }
@@ -142,14 +138,18 @@ impl Component for Div<'_> {
 #[derive(Default, Debug)]
 pub struct Button {
     pub on_click: Handler<Button<'a>>,
+    pub state: &'a str,
 }
 
 impl Component for Button<'_> {
-    fn render(&self, state: State) -> String {
+    fn render(&self, focused: bool) -> String {
-        match state {
+        if self.state == "click" {
-            State::Custom(_) => self.style.write("click", &self.children.get_text()),
+            return self.style.write("click", &self.children.get_text());
-            State::Hover => self.style.write("hover", &self.children.get_text()),
+        }
-            _ => self.style.write("", &self.children.get_text()),
+        if focused {
+            self.style.write("hover", &self.children.get_text())
+        } else {
+            self.style.write("", &self.children.get_text())
         }
     }
 

src/utils.rs

@@ -87,13 +87,13 @@ fn merge_line(frame_: &str, line_: &str, x: usize) -> String {
 
 /// Render to a frame
 pub fn render_to_frame(
-    state: crate::State,
+    focused: bool,
     width: usize,
     frame: &mut Vec<String>,
     element: &Element,
 ) {
     let data = element.get_data();
-    for (i, line) in element.render(state).split('\n').enumerate() {
+    for (i, line) in element.render(focused).split('\n').enumerate() {
         if (data.1 + i) < frame.len() {
             let frame_line = frame.get_mut(data.1 + i).unwrap();
             match data.0 {