Merge pull request #2 from crsaracco/master

barebones x11 window

.gitignore

@@ -1,2 +1,5 @@
 /target
 Cargo.lock
+
+# CLion stuff
+.idea/

Cargo.toml

@@ -1,9 +1,16 @@
 [package]
 name = "baseview"
 version = "0.1.0"
-authors = ["William Light <git@wrl.lhiaudio.com>"]
+authors = [
+    "William Light <git@wrl.lhiaudio.com>",
+    "Charles Saracco <crsaracco@gmail.com>"
+]
 edition = "2018"
 
-# See more keys and their definitions at https://doc.rust-lang.org/cargo/reference/manifest.html
-
 [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="macos")'.dependencies]

examples/x11.rs

@@ -0,0 +1,10 @@
+fn main() {
+    let window_open_options = baseview::WindowOpenOptions {
+        title: "baseview",
+        width: 512,
+        height: 512,
+        parent: baseview::Parent::None,
+    };
+
+    baseview::run(window_open_options);
+}

src/lib.rs

@@ -1,9 +1,11 @@
 use std::ffi::c_void;
 
+mod x11;
+
 pub enum Parent {
     None,
     AsIfParented,
-    WithParent(*mut c_void)
+    WithParent(*mut c_void),
 }
 
 pub struct WindowOpenOptions<'a> {
@@ -12,5 +14,9 @@ pub struct WindowOpenOptions<'a> {
     pub width: usize,
     pub height: usize,
 
-    pub parent: Parent
+    pub parent: Parent,
+}
+
+pub fn run(options: WindowOpenOptions) {
+    x11::run(options);
 }

src/x11.rs

@@ -0,0 +1,110 @@
+// TODO: messy for now, will refactor when I have more of an idea of the API/architecture
+// TODO: actually handle events
+// TODO: set window title
+// TODO: close window
+
+use crate::Parent;
+use crate::WindowOpenOptions;
+
+struct X11Window {
+    xcb_connection: xcb::Connection,
+}
+
+impl X11Window {
+    pub fn run(options: WindowOpenOptions) -> Self {
+        // Convert the parent to a X11 window ID if we're given one
+        let parent = match options.parent {
+            Parent::None => None,
+            Parent::AsIfParented => None, // ???
+            Parent::WithParent(p) => Some(p as u32),
+        };
+
+        // Connect to the X server
+        let (conn, screen_num) = xcb::Connection::connect_with_xlib_display().unwrap();
+
+        // Figure out screen information
+        let setup = conn.get_setup();
+        let screen = setup.roots().nth(screen_num as usize).unwrap();
+
+        // Create window, connecting to the parent if we have one
+        let win = conn.generate_id();
+        let event_mask = &[
+            (xcb::CW_BACK_PIXEL, screen.black_pixel()),
+            (
+                xcb::CW_EVENT_MASK,
+                xcb::EVENT_MASK_EXPOSURE
+                    | xcb::EVENT_MASK_BUTTON_PRESS
+                    | xcb::EVENT_MASK_BUTTON_RELEASE
+                    | xcb::EVENT_MASK_BUTTON_1_MOTION,
+            ),
+        ];
+        xcb::create_window(
+            // Connection
+            &conn,
+            // Depth
+            xcb::COPY_FROM_PARENT as u8,
+            // Window ID
+            win,
+            // Parent ID
+            if let Some(p) = parent {
+                p
+            } else {
+                screen.root()
+            },
+            // x
+            0,
+            // y
+            0,
+            // width
+            1024,
+            // height
+            1024,
+            // border width
+            0,
+            // class
+            xcb::WINDOW_CLASS_INPUT_OUTPUT as u16,
+            // visual
+            screen.root_visual(),
+            // masks
+            event_mask,
+        );
+
+        // Change window title
+        let title = options.title;
+        xcb::change_property(
+            &conn,
+            xcb::PROP_MODE_REPLACE as u8,
+            win,
+            xcb::ATOM_WM_NAME,
+            xcb::ATOM_STRING,
+            8,
+            title.as_bytes(),
+        );
+
+        // Display the window
+        xcb::map_window(&conn, win);
+        conn.flush();
+
+        let x11_window = Self {
+            xcb_connection: conn,
+        };
+
+        x11_window.handle_events();
+
+        return x11_window;
+    }
+
+    // Event loop
+    fn handle_events(&self) {
+        loop {
+            let ev = self.xcb_connection.wait_for_event();
+            if let Some(event) = ev {
+                println!("{:?}", event.response_type());
+            }
+        }
+    }
+}
+
+pub fn run(options: WindowOpenOptions) {
+    X11Window::run(options);
+}