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authorAkshay <[email protected]>2019-11-27 18:40:11 +0000
committerAkshay <[email protected]>2019-11-27 18:40:11 +0000
commit29c45aafe30e48af3fb7bc8ef5b944e1eb819973 (patch)
tree09c90d28c687ef5dc62d89cb55acbf0b7627ce29 /src
parent6877e5737d28ae38c636040dd05cf6a0be654bae (diff)
add err handling
Diffstat (limited to 'src')
-rw-r--r--src/main.rs12
1 files changed, 9 insertions, 3 deletions
diff --git a/src/main.rs b/src/main.rs
index 920608d..d273e9f 100644
--- a/src/main.rs
+++ b/src/main.rs
@@ -21,10 +21,16 @@ fn main() {
21 let (conn, screen_num) = xcb::Connection::connect(None) 21 let (conn, screen_num) = xcb::Connection::connect(None)
22 .unwrap_or_else(|e| panic!("Unable to connect to X session: {}", e)); 22 .unwrap_or_else(|e| panic!("Unable to connect to X session: {}", e));
23 let setup = conn.get_setup(); 23 let setup = conn.get_setup();
24 let screen = setup.roots().nth(screen_num as usize).unwrap(); 24 let screen = setup
25 .roots()
26 .nth(screen_num as usize)
27 .unwrap_or_else(|| panic!("Error accessing screen!"));
25 28
26 let depths = screen.allowed_depths(); 29 let depths = screen.allowed_depths();
27 let mut alpha_depths = depths.filter(|d| d.depth() == 32u8); 30 let mut alpha_depths = depths.filter(|d| d.depth() == 32u8).peekable();
31 if alpha_depths.peek().is_none() {
32 panic!("Alpha channel not found!");
33 }
28 34
29 let visual = alpha_depths 35 let visual = alpha_depths
30 .next() 36 .next()
@@ -55,7 +61,7 @@ fn main() {
55 win_start_y, 61 win_start_y,
56 win_width, 62 win_width,
57 win_height, 63 win_height,
58 2, 64 0,
59 xcb::WINDOW_CLASS_INPUT_OUTPUT as u16, 65 xcb::WINDOW_CLASS_INPUT_OUTPUT as u16,
60 visual.visual_id(), 66 visual.visual_id(),
61 &[ 67 &[