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Clean up listener handling for Views

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This commit is contained in:
Isaac Freund
2020-04-17 13:18:25 +02:00
parent 0976243372
commit 5607163b20
1 changed files with 32 additions and 30 deletions
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62
src/view.zig
View File

@ -25,12 +25,13 @@ pub const View = struct {
// This is what we render while a transaction is in progress
stashed_buffer: ?*c.wlr_buffer,
// Listeners that are always active over the view's lifetime
listen_destroy: c.wl_listener,
listen_map: c.wl_listener,
listen_unmap: c.wl_listener,
listen_destroy: c.wl_listener,
// Listeners that are only active while the view is mapped
listen_commit: c.wl_listener,
// listen_request_move: c.wl_listener,
// listen_request_resize: c.wl_listener,
pub fn init(self: *Self, output: *Output, wlr_xdg_surface: *c.wlr_xdg_surface, tags: u32) void {
self.output = output;
@ -58,21 +59,15 @@ pub const View = struct {
self.stashed_buffer = null;
// Add listeners that are active over the view's entire lifetime
self.listen_destroy.notify = handleDestroy;
c.wl_signal_add(&self.wlr_xdg_surface.events.destroy, &self.listen_destroy);
self.listen_map.notify = handleMap;
c.wl_signal_add(&self.wlr_xdg_surface.events.map, &self.listen_map);
self.listen_unmap.notify = handleUnmap;
c.wl_signal_add(&self.wlr_xdg_surface.events.unmap, &self.listen_unmap);
self.listen_destroy.notify = handleDestroy;
c.wl_signal_add(&self.wlr_xdg_surface.events.destroy, &self.listen_destroy);
self.listen_commit.notify = handleCommit;
c.wl_signal_add(&self.wlr_xdg_surface.surface.*.events.commit, &self.listen_commit);
// const toplevel = xdg_surface.unnamed_160.toplevel;
// c.wl_signal_add(&toplevel.events.request_move, &view.request_move);
// c.wl_signal_add(&toplevel.events.request_resize, &view.request_resize);
}
pub fn needsConfigure(self: Self) bool {
@ -128,16 +123,37 @@ pub const View = struct {
c.wlr_xdg_toplevel_send_close(self.wlr_xdg_surface);
}
fn handleDestroy(listener: ?*c.wl_listener, data: ?*c_void) callconv(.C) void {
const view = @fieldParentPtr(View, "listen_destroy", listener.?);
const output = view.output;
// Remove listeners that are active for the entire lifetime of the view
c.wl_list_remove(&view.listen_destroy.link);
c.wl_list_remove(&view.listen_map.link);
c.wl_list_remove(&view.listen_unmap.link);
// Remove the view from the stack
const node = @fieldParentPtr(ViewStack(View).Node, "view", view);
output.views.remove(node);
output.root.server.allocator.destroy(node);
}
/// Called when the surface is mapped, or ready to display on-screen.
fn handleMap(listener: ?*c.wl_listener, data: ?*c_void) callconv(.C) void {
// Called when the surface is mapped, or ready to display on-screen.
const view = @fieldParentPtr(View, "listen_map", listener.?);
const root = view.output.root;
// Add listeners that are only active while mapped
view.listen_commit.notify = handleCommit;
c.wl_signal_add(&view.wlr_xdg_surface.surface.*.events.commit, &view.listen_commit);
view.mapped = true;
// TODO: remove this hack
root.server.input_manager.seats.first.?.data.focus(view);
view.output.root.arrange();
}
/// Called when the surface is unmapped and will no longer be displayed.
fn handleUnmap(listener: ?*c.wl_listener, data: ?*c_void) callconv(.C) void {
const view = @fieldParentPtr(View, "listen_unmap", listener.?);
const root = view.output.root;
@ -151,15 +167,9 @@ pub const View = struct {
}
root.arrange();
}
fn handleDestroy(listener: ?*c.wl_listener, data: ?*c_void) callconv(.C) void {
const view = @fieldParentPtr(View, "listen_destroy", listener.?);
const output = view.output;
const node = @fieldParentPtr(ViewStack(View).Node, "view", view);
output.views.remove(node);
output.root.server.allocator.destroy(node);
// Remove listeners that are only active while mapped
c.wl_list_remove(&view.listen_commit.link);
}
fn handleCommit(listener: ?*c.wl_listener, data: ?*c_void) callconv(.C) void {
@ -173,14 +183,6 @@ pub const View = struct {
// TODO: check for unexpected change in size and react as needed
}
// fn xdgToplevelRequestMove(listener: ?*c.wl_listener, data: ?*c_void) callconv(.C) void {
// // ignore for now
// }
// fn xdgToplevelRequestResize(listener: ?*c.wl_listener, data: ?*c_void) callconv(.C) void {
// // ignore for now
// }
/// Set the active state of the view to the passed bool
pub fn setActivated(self: Self, activated: bool) void {
_ = c.wlr_xdg_toplevel_set_activated(self.wlr_xdg_surface, activated);