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seat: implement drag and drop

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This commit is contained in:
Isaac Freund
2020-09-10 01:13:47 +02:00
parent 976a3ce73d
commit f597e7da63
5 changed files with 122 additions and 22 deletions
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38
river/Seat.zig
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@ -25,6 +25,7 @@ const command = @import("command.zig");
const log = @import("log.zig");
const util = @import("util.zig");
const DragIcon = @import("DragIcon.zig");
const Cursor = @import("Cursor.zig");
const InputManager = @import("InputManager.zig");
const Keyboard = @import("Keyboard.zig");
@ -66,6 +67,8 @@ focus_stack: ViewStack(*View) = ViewStack(*View){},
status_trackers: std.SinglyLinkedList(SeatStatus) = std.SinglyLinkedList(SeatStatus).init(),
listen_request_set_selection: c.wl_listener = undefined,
listen_request_start_drag: c.wl_listener = undefined,
listen_start_drag: c.wl_listener = undefined,
pub fn init(self: *Self, input_manager: *InputManager, name: [*:0]const u8) !void {
self.* = .{
@ -80,6 +83,12 @@ pub fn init(self: *Self, input_manager: *InputManager, name: [*:0]const u8) !voi
self.listen_request_set_selection.notify = handleRequestSetSelection;
c.wl_signal_add(&self.wlr_seat.events.request_set_selection, &self.listen_request_set_selection);
self.listen_request_start_drag.notify = handleRequestStartDrag;
c.wl_signal_add(&self.wlr_seat.events.request_start_drag, &self.listen_request_start_drag);
self.listen_start_drag.notify = handleStartDrag;
c.wl_signal_add(&self.wlr_seat.events.start_drag, &self.listen_start_drag);
}
pub fn deinit(self: *Self) void {
@ -324,3 +333,32 @@ fn handleRequestSetSelection(listener: ?*c.wl_listener, data: ?*c_void) callconv
const event = util.voidCast(c.wlr_seat_request_set_selection_event, data.?);
c.wlr_seat_set_selection(self.wlr_seat, event.source, event.serial);
}
fn handleRequestStartDrag(listener: ?*c.wl_listener, data: ?*c_void) callconv(.C) void {
const self = @fieldParentPtr(Self, "listen_request_start_drag", listener.?);
const event = util.voidCast(c.wlr_seat_request_start_drag_event, data.?);
if (c.wlr_seat_validate_pointer_grab_serial(self.wlr_seat, event.origin, event.serial)) {
log.debug(.seat, "starting pointer drag", .{});
c.wlr_seat_start_pointer_drag(self.wlr_seat, event.drag, event.serial);
return;
}
log.debug(.seat, "ignoring request to start drag, failed to validate serial {}", .{event.serial});
c.wlr_data_source_destroy(event.drag.*.source);
}
fn handleStartDrag(listener: ?*c.wl_listener, data: ?*c_void) callconv(.C) void {
const self = @fieldParentPtr(Self, "listen_start_drag", listener.?);
const wlr_drag = util.voidCast(c.wlr_drag, data.?);
if (wlr_drag.icon) |wlr_drag_icon| {
const node = util.gpa.create(std.SinglyLinkedList(DragIcon).Node) catch {
log.crit(.seat, "out of memory", .{});
return;
};
node.data.init(self, wlr_drag_icon);
self.input_manager.server.root.drag_icons.prepend(node);
}
self.cursor.mode = .passthrough;
}