Abolish Color struct in favour of plain u32s

src/shm.rs

@@ -1,7 +1,5 @@
 use libc::{c_void, ftruncate, mmap, munmap, shm_open, shm_unlink, MAP_FAILED, MAP_SHARED, O_CREAT, O_EXCL, O_RDWR, PROT_READ, PROT_WRITE};
 
-use crate::wl_client::Color;
-
 #[derive(Clone)]
 pub struct ShmPool {
     pub fd: i32,
@@ -52,12 +50,12 @@ impl ShmPool {
         Ok(())
     }
 
-    pub fn write(&mut self, data: &Vec<Color>, offset: isize) -> std::io::Result<()> {
+    pub fn write(&mut self, data: &Vec<u32>, offset: isize) -> std::io::Result<()> {
         // TODO: Bounds check
         unsafe {
             std::ptr::copy_nonoverlapping(
-                data.as_ptr().offset(offset) as *const Color, // src: data as *const Color
+                data.as_ptr() as *const u32, // src: data as *const u32
-                self.addr.offset(2) as *mut Color, // dst: ShmPool address as *mut Color
+                self.addr.offset(offset*4) as *mut u32, // dst: ShmPool address as *mut u32
                 data.len()
             );
         }

src/wl_client.rs

@@ -8,35 +8,13 @@ struct WlHeader {
     size:   u16,
 }
 
-#[derive(Clone)]
+pub mod color {
-pub struct Color {
+    pub const WHITE:    u32 = 0xffffffff;
-    pub alpha:  u8,
+    pub const BLACK:    u32 = 0xff000000;
-    pub red:    u8,
+    pub const RED:      u32 = 0xffff0000;
-    pub green:  u8,
+    pub const GREEN:    u32 = 0xff00ff00;
-    pub blue:   u8,
+    pub const BLUE:     u32 = 0xff0000ff;
-}
+    pub const SAPPHIRE: u32 = 0xff74c7ec;
-
-impl Color {
-    pub const WHITE: Self = Self {
-        alpha: u8::MAX,
-        red: u8::MAX,
-        green: u8::MAX,
-        blue: u8::MAX,
-    };
-
-    pub const RED: Self = Self {
-        alpha: 0xff,
-        red: 0xff,
-        green: 0,
-        blue: 0,
-    };
-
-    pub const BLACK: Self = Self {
-        alpha: 0xff,
-        red: 0,
-        green: 0,
-        blue: 0,
-    };
 }
 
 pub struct WlClient {

src/wl_shm.rs

@@ -1,5 +1,5 @@
 use std::{error::Error, io::Write, os::unix::net::SocketAncillary, u8};
-use crate::{shm, surface::UnsetErr, vec_utils::WlMessage, wl_client::Color, WlClient};
+use crate::{shm, surface::UnsetErr, vec_utils::WlMessage, wl_client::color, WlClient};
 
 const STRIDE: usize = 4;
 
@@ -13,8 +13,12 @@ impl WlClient {
         self.current_id += 1;
         self.shm_pool = Some(shm::ShmPool::new(width * height * STRIDE, self.current_id)?);
 
-        let data: Vec<Color> = vec![Color::RED; width * height];
+        self.shm_pool.as_mut().unwrap().write(&vec![color::RED;     width * height/6], 0)?;
-        self.shm_pool.as_mut().unwrap().write(&data, 0)?;
+        self.shm_pool.as_mut().unwrap().write(&vec![color::GREEN;   width * height/6], (width*height*1/6) as isize)?;
+        self.shm_pool.as_mut().unwrap().write(&vec![color::BLUE;    width * height/6], (width*height*2/6) as isize)?;
+        self.shm_pool.as_mut().unwrap().write(&vec![color::WHITE;   width * height/6], (width*height*3/6) as isize)?;
+        self.shm_pool.as_mut().unwrap().write(&vec![color::BLACK;   width * height/6], (width*height*4/6) as isize)?;
+        self.shm_pool.as_mut().unwrap().write(&vec![color::SAPPHIRE;width * height/6], (width*height*5/6) as isize)?;
 
         let object = self.shm_id.ok_or(UnsetErr("shm_id".to_string()))?;
         const OPCODE: u16 = 0;