Merge pull request #1 from MirkoCovizzi/master

Add Windows initial code

.gitignore

@@ -1,5 +1,4 @@
 /target
 Cargo.lock
-
+.idea
-# CLion stuff
+*.iml
-.idea/

Cargo.toml

@@ -3,14 +3,17 @@ name = "baseview"
 version = "0.1.0"
 authors = [
     "William Light <git@wrl.lhiaudio.com>",
-    "Charles Saracco <crsaracco@gmail.com>"
+    "Charles Saracco <crsaracco@gmail.com>",
+    "Mirko Covizzi <mrkcvzz@gmail.com>"
 ]
 edition = "2018"
 
 [dependencies]
+
 [target.'cfg(target_os="linux")'.dependencies]
 xcb = { version = "0.9", features = ["thread", "xlib_xcb", "dri2"] }
 
-# [target.'cfg(target_os="windows")'.dependencies]
+[target.'cfg(target_os="windows")'.dependencies]
+winapi = { version = "0.3.8", features = ["libloaderapi", "winuser", "windef", "minwindef", "guiddef", "combaseapi"] }
 
-# [target.'cfg(target_os="macos")'.dependencies]
+# [target.'cfg(target_os="macos")'.dependencies]

examples/windows.rs

@@ -0,0 +1,21 @@
+use std::ptr::null_mut;
+
+use baseview::Parent;
+use baseview::{create_window, handle_msg, WindowOpenOptions};
+
+fn main() {
+    let window = WindowOpenOptions {
+        title: "Baseview",
+        width: 800,
+        height: 400,
+        parent: Parent::None,
+    };
+
+    create_window(window);
+
+    loop {
+        if !handle_msg(null_mut()) {
+            break;
+        }
+    }
+}

src/lib.rs

@@ -1,3 +1,7 @@
+mod win;
+
+pub use win::*;
+
 use std::ffi::c_void;
 
 mod x11;

src/win/mod.rs

@@ -0,0 +1,3 @@
+mod window;
+
+pub use window::*;

src/win/window.rs

@@ -0,0 +1,104 @@
+extern crate winapi;
+
+use self::winapi::_core::mem::MaybeUninit;
+use self::winapi::shared::guiddef::GUID;
+use self::winapi::shared::minwindef::{LPARAM, LPVOID, LRESULT, UINT, WPARAM};
+use self::winapi::shared::windef::{HBRUSH, HICON, HMENU, HWND};
+use self::winapi::um::combaseapi::CoCreateGuid;
+use self::winapi::um::libloaderapi::GetModuleHandleA;
+use self::winapi::um::winuser::{
+    CreateWindowExA, DefWindowProcA, DispatchMessageA, PeekMessageA, PostQuitMessage,
+    RegisterClassA, TranslateMessage, CS_HREDRAW, CS_OWNDC, CS_VREDRAW, CW_USEDEFAULT, MSG,
+    PM_REMOVE, WM_DESTROY, WM_QUIT, WNDCLASSA, WS_OVERLAPPEDWINDOW, WS_VISIBLE,
+};
+
+use crate::WindowOpenOptions;
+
+pub fn handle_msg(_window: HWND) -> bool {
+    unsafe {
+        let mut msg: MSG = MaybeUninit::uninit().assume_init();
+        loop {
+            if PeekMessageA(&mut msg, 0 as HWND, 0, 0, PM_REMOVE) == 0 {
+                return true;
+            }
+            if msg.message == WM_QUIT {
+                return false;
+            }
+            TranslateMessage(&msg);
+            DispatchMessageA(&msg);
+        }
+    }
+}
+
+pub unsafe extern "system" fn wnd_proc(
+    hwnd: HWND,
+    msg: UINT,
+    w_param: WPARAM,
+    l_param: LPARAM,
+) -> LRESULT {
+    match msg {
+        WM_DESTROY => {
+            PostQuitMessage(0);
+        }
+        _ => {
+            return DefWindowProcA(hwnd, msg, w_param, l_param);
+        }
+    }
+    return 0;
+}
+
+pub fn create_window(w: WindowOpenOptions) {
+    unsafe {
+        // We generate a unique name for the new window class to prevent name collisions
+        let mut guid: GUID = MaybeUninit::uninit().assume_init();
+        CoCreateGuid(&mut guid);
+        let class_name = format!(
+            "Baseview-{}-{}-{}-{}{}{}{}{}{}{}{}\0",
+            guid.Data1,
+            guid.Data2,
+            guid.Data3,
+            guid.Data4[0],
+            guid.Data4[1],
+            guid.Data4[2],
+            guid.Data4[3],
+            guid.Data4[4],
+            guid.Data4[5],
+            guid.Data4[6],
+            guid.Data4[7]
+        );
+
+        let hinstance = GetModuleHandleA(0 as *const i8);
+        let wnd_class = WNDCLASSA {
+            // todo: for OpenGL, will use it later
+            style: CS_OWNDC | CS_HREDRAW | CS_VREDRAW,
+            lpfnWndProc: Some(wnd_proc),
+            hInstance: hinstance,
+            lpszClassName: class_name.as_ptr() as *const i8,
+            cbClsExtra: 0,
+            cbWndExtra: 0,
+            hIcon: 0 as HICON,
+            hCursor: 0 as HICON,
+            hbrBackground: 0 as HBRUSH,
+            lpszMenuName: 0 as *const i8,
+        };
+        RegisterClassA(&wnd_class);
+
+        let _hwnd = CreateWindowExA(
+            0,
+            class_name.as_ptr() as *const i8,
+            // todo: change title based on options struct
+            "Baseview\0".as_ptr() as *const i8,
+            // todo: fine for now, will have to change with a parent
+            WS_OVERLAPPEDWINDOW | WS_VISIBLE,
+            CW_USEDEFAULT,
+            CW_USEDEFAULT,
+            // todo: check if usize fits into i32
+            w.width as i32,
+            w.height as i32,
+            0 as HWND,
+            0 as HMENU,
+            hinstance,
+            0 as LPVOID,
+        );
+    }
+}