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x11: Remember cursor after changing cursor state (#374)

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Tuomas Siipola 2017-12-27 15:30:59 +02:00 committed by Pierre Krieger
parent 011720848a
commit f89dc9e903
1 changed files with 83 additions and 84 deletions
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167
src/platform/linux/x11/window.rs
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@ -61,6 +61,7 @@ unsafe impl Sync for Window2 {}
pub struct Window2 {
pub x: Arc<XWindow>,
cursor: Mutex<MouseCursor>,
cursor_state: Mutex<CursorState>,
}
@ -149,6 +150,7 @@ impl Window2 {
root,
screen_id,
}),
cursor: Mutex::new(MouseCursor::Default),
cursor_state: Mutex::new(CursorState::Normal),
};
@ -568,75 +570,6 @@ impl Window2 {
}
}
pub fn set_cursor(&self, cursor: MouseCursor) {
unsafe {
let load = |name: &str| {
self.load_cursor(name)
};
let loadn = |names: &[&str]| {
self.load_first_existing_cursor(names)
};
// Try multiple names in some cases where the name
// differs on the desktop environments or themes.
//
// Try the better looking (or more suiting) names first.
let xcursor = match cursor {
MouseCursor::Alias => load("link"),
MouseCursor::Arrow => load("arrow"),
MouseCursor::Cell => load("plus"),
MouseCursor::Copy => load("copy"),
MouseCursor::Crosshair => load("crosshair"),
MouseCursor::Default => load("left_ptr"),
MouseCursor::Hand => loadn(&["hand2", "hand1"]),
MouseCursor::Help => load("question_arrow"),
MouseCursor::Move => load("move"),
MouseCursor::Grab => loadn(&["openhand", "grab"]),
MouseCursor::Grabbing => loadn(&["closedhand", "grabbing"]),
MouseCursor::Progress => load("left_ptr_watch"),
MouseCursor::AllScroll => load("all-scroll"),
MouseCursor::ContextMenu => load("context-menu"),
MouseCursor::NoDrop => loadn(&["no-drop", "circle"]),
MouseCursor::NotAllowed => load("crossed_circle"),
// Resize cursors
MouseCursor::EResize => load("right_side"),
MouseCursor::NResize => load("top_side"),
MouseCursor::NeResize => load("top_right_corner"),
MouseCursor::NwResize => load("top_left_corner"),
MouseCursor::SResize => load("bottom_side"),
MouseCursor::SeResize => load("bottom_right_corner"),
MouseCursor::SwResize => load("bottom_left_corner"),
MouseCursor::WResize => load("left_side"),
MouseCursor::EwResize => load("h_double_arrow"),
MouseCursor::NsResize => load("v_double_arrow"),
MouseCursor::NwseResize => loadn(&["bd_double_arrow", "size_bdiag"]),
MouseCursor::NeswResize => loadn(&["fd_double_arrow", "size_fdiag"]),
MouseCursor::ColResize => loadn(&["split_h", "h_double_arrow"]),
MouseCursor::RowResize => loadn(&["split_v", "v_double_arrow"]),
MouseCursor::Text => loadn(&["text", "xterm"]),
MouseCursor::VerticalText => load("vertical-text"),
MouseCursor::Wait => load("watch"),
MouseCursor::ZoomIn => load("zoom-in"),
MouseCursor::ZoomOut => load("zoom-out"),
MouseCursor::NoneCursor => self.create_empty_cursor(),
};
(self.x.display.xlib.XDefineCursor)(self.x.display.display, self.x.window, xcursor);
if xcursor != 0 {
(self.x.display.xlib.XFreeCursor)(self.x.display.display, xcursor);
}
self.x.display.check_errors().expect("Failed to set or free the cursor");
}
}
fn load_cursor(&self, name: &str) -> ffi::Cursor {
use std::ffi::CString;
unsafe {
@ -655,6 +588,85 @@ impl Window2 {
0
}
fn get_cursor(&self, cursor: MouseCursor) -> ffi::Cursor {
let load = |name: &str| {
self.load_cursor(name)
};
let loadn = |names: &[&str]| {
self.load_first_existing_cursor(names)
};
// Try multiple names in some cases where the name
// differs on the desktop environments or themes.
//
// Try the better looking (or more suiting) names first.
match cursor {
MouseCursor::Alias => load("link"),
MouseCursor::Arrow => load("arrow"),
MouseCursor::Cell => load("plus"),
MouseCursor::Copy => load("copy"),
MouseCursor::Crosshair => load("crosshair"),
MouseCursor::Default => load("left_ptr"),
MouseCursor::Hand => loadn(&["hand2", "hand1"]),
MouseCursor::Help => load("question_arrow"),
MouseCursor::Move => load("move"),
MouseCursor::Grab => loadn(&["openhand", "grab"]),
MouseCursor::Grabbing => loadn(&["closedhand", "grabbing"]),
MouseCursor::Progress => load("left_ptr_watch"),
MouseCursor::AllScroll => load("all-scroll"),
MouseCursor::ContextMenu => load("context-menu"),
MouseCursor::NoDrop => loadn(&["no-drop", "circle"]),
MouseCursor::NotAllowed => load("crossed_circle"),
// Resize cursors
MouseCursor::EResize => load("right_side"),
MouseCursor::NResize => load("top_side"),
MouseCursor::NeResize => load("top_right_corner"),
MouseCursor::NwResize => load("top_left_corner"),
MouseCursor::SResize => load("bottom_side"),
MouseCursor::SeResize => load("bottom_right_corner"),
MouseCursor::SwResize => load("bottom_left_corner"),
MouseCursor::WResize => load("left_side"),
MouseCursor::EwResize => load("h_double_arrow"),
MouseCursor::NsResize => load("v_double_arrow"),
MouseCursor::NwseResize => loadn(&["bd_double_arrow", "size_bdiag"]),
MouseCursor::NeswResize => loadn(&["fd_double_arrow", "size_fdiag"]),
MouseCursor::ColResize => loadn(&["split_h", "h_double_arrow"]),
MouseCursor::RowResize => loadn(&["split_v", "v_double_arrow"]),
MouseCursor::Text => loadn(&["text", "xterm"]),
MouseCursor::VerticalText => load("vertical-text"),
MouseCursor::Wait => load("watch"),
MouseCursor::ZoomIn => load("zoom-in"),
MouseCursor::ZoomOut => load("zoom-out"),
MouseCursor::NoneCursor => self.create_empty_cursor(),
}
}
fn update_cursor(&self, cursor: ffi::Cursor) {
unsafe {
(self.x.display.xlib.XDefineCursor)(self.x.display.display, self.x.window, cursor);
if cursor != 0 {
(self.x.display.xlib.XFreeCursor)(self.x.display.display, cursor);
}
self.x.display.check_errors().expect("Failed to set or free the cursor");
}
}
pub fn set_cursor(&self, cursor: MouseCursor) {
let mut current_cursor = self.cursor.lock().unwrap();
*current_cursor = cursor;
if *self.cursor_state.lock().unwrap() != CursorState::Hide {
self.update_cursor(self.get_cursor(*current_cursor));
}
}
// TODO: This could maybe be cached. I don't think it's worth
// the complexity, since cursor changes are not so common,
// and this is just allocating a 1x1 pixmap...
@ -699,27 +711,14 @@ impl Window2 {
}
},
Normal => {},
Hide => {
// NB: Calling XDefineCursor with None (aka 0)
// as a value resets the cursor to the default.
unsafe {
(self.x.display.xlib.XDefineCursor)(self.x.display.display, self.x.window, 0);
}
},
Hide => self.update_cursor(self.get_cursor(*self.cursor.lock().unwrap())),
}
*cursor_state = state;
match state {
Normal => Ok(()),
Hide => {
unsafe {
let cursor = self.create_empty_cursor();
(self.x.display.xlib.XDefineCursor)(self.x.display.display, self.x.window, cursor);
if cursor != 0 {
(self.x.display.xlib.XFreeCursor)(self.x.display.display, cursor);
}
self.x.display.check_errors().expect("Failed to call XDefineCursor or free the empty cursor");
}
self.update_cursor(self.create_empty_cursor());
Ok(())
},
Grab => {