1080 lines
38 KiB
Zig
1080 lines
38 KiB
Zig
// This file is part of river, a dynamic tiling wayland compositor.
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//
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// Copyright 2020 The River Developers
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//
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// This program is free software: you can redistribute it and/or modify
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// it under the terms of the GNU General Public License as published by
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// the Free Software Foundation, version 3.
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//
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// This program is distributed in the hope that it will be useful,
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// but WITHOUT ANY WARRANTY; without even the implied warranty of
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// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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// GNU General Public License for more details.
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//
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// You should have received a copy of the GNU General Public License
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// along with this program. If not, see <https://www.gnu.org/licenses/>.
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const Self = @This();
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const build_options = @import("build_options");
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const std = @import("std");
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const assert = std.debug.assert;
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const os = std.os;
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const math = std.math;
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const wlr = @import("wlroots");
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const wayland = @import("wayland");
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const wl = wayland.server.wl;
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const zwlr = wayland.server.zwlr;
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const c = @import("c.zig");
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const server = &@import("main.zig").server;
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const util = @import("util.zig");
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const Config = @import("Config.zig");
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const LayerSurface = @import("LayerSurface.zig");
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const Output = @import("Output.zig");
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const Seat = @import("Seat.zig");
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const View = @import("View.zig");
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const ViewStack = @import("view_stack.zig").ViewStack;
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const XwaylandOverrideRedirect = @import("XwaylandOverrideRedirect.zig");
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const Mode = union(enum) {
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passthrough: void,
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down: struct {
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// TODO: To handle the surface with pointer focus being moved during
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// down mode we need to store the starting location of the surface as
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// well and take that into account. This is currently not at all easy
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// to do, but moing to the wlroots scene graph will allow us to fix this.
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// Initial cursor position in layout coordinates
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lx: f64,
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ly: f64,
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// Initial cursor position in surface-local coordinates
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sx: f64,
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sy: f64,
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},
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move: struct {
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view: *View,
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/// View coordinates are stored as i32s as they are in logical pixels.
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/// However, it is possible to move the cursor by a fraction of a
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/// logical pixel and this happens in practice with low dpi, high
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/// polling rate mice. Therefore we must accumulate the current
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/// fractional offset of the mouse to avoid rounding down tiny
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/// motions to 0.
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delta_x: f64 = 0,
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delta_y: f64 = 0,
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},
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resize: struct {
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view: *View,
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delta_x: f64 = 0,
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delta_y: f64 = 0,
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/// Offset from the lower right corner of the view
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offset_x: i32,
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offset_y: i32,
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},
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};
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const Image = enum {
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/// The current image of the cursor is unknown, perhaps because it was set by a client.
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unknown,
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left_ptr,
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move,
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@"se-resize",
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};
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const default_size = 24;
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const log = std.log.scoped(.cursor);
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/// Current cursor mode as well as any state needed to implement that mode
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mode: Mode = .passthrough,
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seat: *Seat,
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wlr_cursor: *wlr.Cursor,
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pointer_gestures: *wlr.PointerGesturesV1,
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xcursor_manager: *wlr.XcursorManager,
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image: Image = .unknown,
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constraint: ?*wlr.PointerConstraintV1 = null,
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/// Number of distinct buttons currently pressed
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pressed_count: u32 = 0,
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hide_cursor_timer: *wl.EventSource,
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hidden: bool = false,
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axis: wl.Listener(*wlr.Pointer.event.Axis) = wl.Listener(*wlr.Pointer.event.Axis).init(handleAxis),
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frame: wl.Listener(*wlr.Cursor) = wl.Listener(*wlr.Cursor).init(handleFrame),
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button: wl.Listener(*wlr.Pointer.event.Button) =
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wl.Listener(*wlr.Pointer.event.Button).init(handleButton),
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motion_absolute: wl.Listener(*wlr.Pointer.event.MotionAbsolute) =
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wl.Listener(*wlr.Pointer.event.MotionAbsolute).init(handleMotionAbsolute),
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motion: wl.Listener(*wlr.Pointer.event.Motion) =
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wl.Listener(*wlr.Pointer.event.Motion).init(handleMotion),
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pinch_begin: wl.Listener(*wlr.Pointer.event.PinchBegin) =
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wl.Listener(*wlr.Pointer.event.PinchBegin).init(handlePinchBegin),
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pinch_update: wl.Listener(*wlr.Pointer.event.PinchUpdate) =
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wl.Listener(*wlr.Pointer.event.PinchUpdate).init(handlePinchUpdate),
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pinch_end: wl.Listener(*wlr.Pointer.event.PinchEnd) =
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wl.Listener(*wlr.Pointer.event.PinchEnd).init(handlePinchEnd),
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request_set_cursor: wl.Listener(*wlr.Seat.event.RequestSetCursor) =
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wl.Listener(*wlr.Seat.event.RequestSetCursor).init(handleRequestSetCursor),
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swipe_begin: wl.Listener(*wlr.Pointer.event.SwipeBegin) =
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wl.Listener(*wlr.Pointer.event.SwipeBegin).init(handleSwipeBegin),
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swipe_update: wl.Listener(*wlr.Pointer.event.SwipeUpdate) =
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wl.Listener(*wlr.Pointer.event.SwipeUpdate).init(handleSwipeUpdate),
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swipe_end: wl.Listener(*wlr.Pointer.event.SwipeEnd) =
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wl.Listener(*wlr.Pointer.event.SwipeEnd).init(handleSwipeEnd),
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touch_up: wl.Listener(*wlr.Touch.event.Up) =
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wl.Listener(*wlr.Touch.event.Up).init(handleTouchUp),
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touch_down: wl.Listener(*wlr.Touch.event.Down) =
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wl.Listener(*wlr.Touch.event.Down).init(handleTouchDown),
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touch_motion: wl.Listener(*wlr.Touch.event.Motion) =
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wl.Listener(*wlr.Touch.event.Motion).init(handleTouchMotion),
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touch_frame: wl.Listener(void) = wl.Listener(void).init(handleTouchFrame),
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pub fn init(self: *Self, seat: *Seat) !void {
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const wlr_cursor = try wlr.Cursor.create();
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errdefer wlr_cursor.destroy();
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wlr_cursor.attachOutputLayout(server.root.output_layout);
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// This is here so that self.xcursor_manager doesn't need to be an
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// optional pointer. This isn't optimal as it does a needless allocation,
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// but this is not a hot path.
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const xcursor_manager = try wlr.XcursorManager.create(null, default_size);
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errdefer xcursor_manager.destroy();
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const event_loop = server.wl_server.getEventLoop();
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self.* = .{
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.seat = seat,
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.wlr_cursor = wlr_cursor,
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.pointer_gestures = try wlr.PointerGesturesV1.create(server.wl_server),
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.xcursor_manager = xcursor_manager,
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.hide_cursor_timer = try event_loop.addTimer(*Self, handleHideCursorTimeout, self),
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};
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errdefer self.hide_cursor_timer.remove();
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try self.hide_cursor_timer.timerUpdate(server.config.cursor_hide_timeout);
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try self.setTheme(null, null);
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// wlr_cursor *only* displays an image on screen. It does not move around
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// when the pointer moves. However, we can attach input devices to it, and
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// it will generate aggregate events for all of them. In these events, we
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// can choose how we want to process them, forwarding them to clients and
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// moving the cursor around. See following post for more detail:
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// https://drewdevault.com/2018/07/17/Input-handling-in-wlroots.html
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wlr_cursor.events.axis.add(&self.axis);
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wlr_cursor.events.button.add(&self.button);
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wlr_cursor.events.frame.add(&self.frame);
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wlr_cursor.events.motion_absolute.add(&self.motion_absolute);
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wlr_cursor.events.motion.add(&self.motion);
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wlr_cursor.events.swipe_begin.add(&self.swipe_begin);
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wlr_cursor.events.swipe_update.add(&self.swipe_update);
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wlr_cursor.events.swipe_end.add(&self.swipe_end);
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wlr_cursor.events.pinch_begin.add(&self.pinch_begin);
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wlr_cursor.events.pinch_update.add(&self.pinch_update);
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wlr_cursor.events.pinch_end.add(&self.pinch_end);
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seat.wlr_seat.events.request_set_cursor.add(&self.request_set_cursor);
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// TODO(wlroots) handle the cancel event, blocked on wlroots 0.16.0
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wlr_cursor.events.touch_up.add(&self.touch_up);
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wlr_cursor.events.touch_down.add(&self.touch_down);
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wlr_cursor.events.touch_motion.add(&self.touch_motion);
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wlr_cursor.events.touch_frame.add(&self.touch_frame);
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}
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pub fn deinit(self: *Self) void {
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self.hide_cursor_timer.remove();
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self.xcursor_manager.destroy();
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self.wlr_cursor.destroy();
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}
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/// Set the cursor theme for the given seat, as well as the xwayland theme if
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/// this is the default seat. Either argument may be null, in which case a
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/// default will be used.
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pub fn setTheme(self: *Self, theme: ?[*:0]const u8, _size: ?u32) !void {
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const size = _size orelse default_size;
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self.xcursor_manager.destroy();
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self.xcursor_manager = try wlr.XcursorManager.create(theme, size);
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// For each output, ensure a theme of the proper scale is loaded
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var it = server.root.outputs.first;
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while (it) |node| : (it = node.next) {
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const wlr_output = node.data.wlr_output;
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self.xcursor_manager.load(wlr_output.scale) catch
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log.err("failed to load xcursor theme '{s}' at scale {}", .{ theme, wlr_output.scale });
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}
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// If this cursor belongs to the default seat, set the xcursor environment
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// variables as well as the xwayland cursor theme and update the cursor
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// image if necessary.
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if (self.seat == server.input_manager.defaultSeat()) {
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const size_str = try std.fmt.allocPrintZ(util.gpa, "{}", .{size});
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defer util.gpa.free(size_str);
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if (c.setenv("XCURSOR_SIZE", size_str, 1) < 0) return error.OutOfMemory;
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if (theme) |t| if (c.setenv("XCURSOR_THEME", t, 1) < 0) return error.OutOfMemory;
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if (build_options.xwayland) {
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self.xcursor_manager.load(1) catch {
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log.err("failed to load xcursor theme '{s}' at scale 1", .{theme});
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return;
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};
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const wlr_xcursor = self.xcursor_manager.getXcursor("left_ptr", 1).?;
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const image = wlr_xcursor.images[0];
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server.xwayland.setCursor(
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image.buffer,
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image.width * 4,
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image.width,
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image.height,
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@intCast(i32, image.hotspot_x),
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@intCast(i32, image.hotspot_y),
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);
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}
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if (self.image != .unknown) {
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self.xcursor_manager.setCursorImage(@tagName(self.image), self.wlr_cursor);
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}
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}
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}
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pub fn handleViewUnmap(self: *Self, view: *View) void {
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if (switch (self.mode) {
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.passthrough, .down => false,
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.move => |data| data.view == view,
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.resize => |data| data.view == view,
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}) {
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self.mode = .passthrough;
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self.clearFocus();
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}
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}
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/// It seems that setCursorImage is actually fairly expensive to call repeatedly
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/// as it does no checks to see if the the given image is already set. Therefore,
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/// do that check here.
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fn setImage(self: *Self, image: Image) void {
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assert(image != .unknown);
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if (image == self.image) return;
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self.image = image;
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self.xcursor_manager.setCursorImage(@tagName(image), self.wlr_cursor);
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}
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fn clearFocus(self: *Self) void {
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self.setImage(.left_ptr);
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self.seat.wlr_seat.pointerNotifyClearFocus();
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}
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/// Axis event is a scroll wheel or similiar
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fn handleAxis(listener: *wl.Listener(*wlr.Pointer.event.Axis), event: *wlr.Pointer.event.Axis) void {
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const self = @fieldParentPtr(Self, "axis", listener);
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self.seat.handleActivity();
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self.unhide();
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// Notify the client with pointer focus of the axis event.
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self.seat.wlr_seat.pointerNotifyAxis(
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event.time_msec,
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event.orientation,
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event.delta,
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event.delta_discrete,
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event.source,
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);
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}
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fn handleButton(listener: *wl.Listener(*wlr.Pointer.event.Button), event: *wlr.Pointer.event.Button) void {
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const self = @fieldParentPtr(Self, "button", listener);
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self.seat.handleActivity();
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self.unhide();
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if (event.state == .released) {
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assert(self.pressed_count > 0);
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self.pressed_count -= 1;
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if (self.pressed_count == 0 and self.mode != .passthrough) {
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self.leaveMode(event);
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} else {
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_ = self.seat.wlr_seat.pointerNotifyButton(event.time_msec, event.button, event.state);
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}
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return;
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}
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assert(event.state == .pressed);
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self.pressed_count += 1;
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if (self.pressed_count > 1) {
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_ = self.seat.wlr_seat.pointerNotifyButton(event.time_msec, event.button, event.state);
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return;
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}
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if (self.surfaceAt()) |result| {
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if (result.parent == .view and self.handlePointerMapping(event, result.parent.view)) {
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// If a mapping is triggered don't send events to clients.
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return;
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}
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self.updateKeyboardFocus(result);
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_ = self.seat.wlr_seat.pointerNotifyButton(event.time_msec, event.button, event.state);
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self.mode = .{
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.down = .{
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.lx = self.wlr_cursor.x,
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.ly = self.wlr_cursor.y,
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.sx = result.sx,
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.sy = result.sy,
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},
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};
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} else {
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self.updateOutputFocus(self.wlr_cursor.x, self.wlr_cursor.y);
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}
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server.root.startTransaction();
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}
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fn updateKeyboardFocus(self: Self, result: SurfaceAtResult) void {
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switch (result.parent) {
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.view => |view| {
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// Otherwise focus the view
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self.seat.focus(view);
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},
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.layer_surface => |layer_surface| {
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self.seat.focusOutput(layer_surface.output);
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// If a keyboard inteactive layer surface has been clicked on,
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// give it keyboard focus.
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if (layer_surface.wlr_layer_surface.current.keyboard_interactive == .exclusive) {
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self.seat.setFocusRaw(.{ .layer = layer_surface });
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} else {
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self.seat.focus(null);
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}
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},
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.xwayland_override_redirect => |override_redirect| {
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if (!build_options.xwayland) unreachable;
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if (override_redirect.xwayland_surface.overrideRedirectWantsFocus() and
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override_redirect.xwayland_surface.icccmInputModel() != .none)
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{
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self.seat.setFocusRaw(.{ .xwayland_override_redirect = override_redirect });
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}
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},
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}
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}
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/// Focus the output at the given layout coordinates, if any
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fn updateOutputFocus(self: Self, lx: f64, ly: f64) void {
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if (server.root.output_layout.outputAt(lx, ly)) |wlr_output| {
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const output = @intToPtr(*Output, wlr_output.data);
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self.seat.focusOutput(output);
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self.seat.focus(null);
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}
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}
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fn handlePinchBegin(
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listener: *wl.Listener(*wlr.Pointer.event.PinchBegin),
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event: *wlr.Pointer.event.PinchBegin,
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) void {
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const self = @fieldParentPtr(Self, "pinch_begin", listener);
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self.pointer_gestures.sendPinchBegin(
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self.seat.wlr_seat,
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event.time_msec,
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event.fingers,
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);
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}
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fn handlePinchUpdate(
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listener: *wl.Listener(*wlr.Pointer.event.PinchUpdate),
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event: *wlr.Pointer.event.PinchUpdate,
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) void {
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const self = @fieldParentPtr(Self, "pinch_update", listener);
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self.pointer_gestures.sendPinchUpdate(
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self.seat.wlr_seat,
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event.time_msec,
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event.dx,
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event.dy,
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event.scale,
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event.rotation,
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);
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}
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fn handlePinchEnd(
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listener: *wl.Listener(*wlr.Pointer.event.PinchEnd),
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event: *wlr.Pointer.event.PinchEnd,
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) void {
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const self = @fieldParentPtr(Self, "pinch_end", listener);
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self.pointer_gestures.sendPinchEnd(
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self.seat.wlr_seat,
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event.time_msec,
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event.cancelled,
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);
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}
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fn handleSwipeBegin(
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listener: *wl.Listener(*wlr.Pointer.event.SwipeBegin),
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event: *wlr.Pointer.event.SwipeBegin,
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) void {
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const self = @fieldParentPtr(Self, "swipe_begin", listener);
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self.pointer_gestures.sendSwipeBegin(
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self.seat.wlr_seat,
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event.time_msec,
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event.fingers,
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);
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}
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fn handleSwipeUpdate(
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listener: *wl.Listener(*wlr.Pointer.event.SwipeUpdate),
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event: *wlr.Pointer.event.SwipeUpdate,
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) void {
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const self = @fieldParentPtr(Self, "swipe_update", listener);
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self.pointer_gestures.sendSwipeUpdate(
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self.seat.wlr_seat,
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event.time_msec,
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event.dx,
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event.dy,
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);
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}
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fn handleSwipeEnd(
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listener: *wl.Listener(*wlr.Pointer.event.SwipeEnd),
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event: *wlr.Pointer.event.SwipeEnd,
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) void {
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const self = @fieldParentPtr(Self, "swipe_end", listener);
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self.pointer_gestures.sendSwipeEnd(
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self.seat.wlr_seat,
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event.time_msec,
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event.cancelled,
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);
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}
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fn handleTouchUp(
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listener: *wl.Listener(*wlr.Touch.event.Up),
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event: *wlr.Touch.event.Up,
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) void {
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const self = @fieldParentPtr(Self, "touch_up", listener);
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self.seat.handleActivity();
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self.seat.wlr_seat.touchNotifyUp(event.time_msec, event.touch_id);
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}
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fn handleTouchDown(
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listener: *wl.Listener(*wlr.Touch.event.Down),
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event: *wlr.Touch.event.Down,
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) void {
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const self = @fieldParentPtr(Self, "touch_down", listener);
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self.seat.handleActivity();
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var lx: f64 = undefined;
|
|
var ly: f64 = undefined;
|
|
self.wlr_cursor.absoluteToLayoutCoords(event.device, event.x, event.y, &lx, &ly);
|
|
|
|
if (surfaceAtCoords(lx, ly)) |result| {
|
|
self.updateKeyboardFocus(result);
|
|
|
|
_ = self.seat.wlr_seat.touchNotifyDown(
|
|
result.surface,
|
|
event.time_msec,
|
|
event.touch_id,
|
|
result.sx,
|
|
result.sy,
|
|
);
|
|
} else {
|
|
self.updateOutputFocus(lx, ly);
|
|
}
|
|
|
|
server.root.startTransaction();
|
|
}
|
|
|
|
fn handleTouchMotion(
|
|
listener: *wl.Listener(*wlr.Touch.event.Motion),
|
|
event: *wlr.Touch.event.Motion,
|
|
) void {
|
|
const self = @fieldParentPtr(Self, "touch_motion", listener);
|
|
|
|
self.seat.handleActivity();
|
|
|
|
var lx: f64 = undefined;
|
|
var ly: f64 = undefined;
|
|
self.wlr_cursor.absoluteToLayoutCoords(event.device, event.x, event.y, &lx, &ly);
|
|
|
|
if (surfaceAtCoords(lx, ly)) |result| {
|
|
self.seat.wlr_seat.touchNotifyMotion(event.time_msec, event.touch_id, result.sx, result.sy);
|
|
}
|
|
}
|
|
|
|
fn handleTouchFrame(listener: *wl.Listener(void)) void {
|
|
const self = @fieldParentPtr(Self, "touch_frame", listener);
|
|
|
|
self.seat.handleActivity();
|
|
|
|
self.seat.wlr_seat.touchNotifyFrame();
|
|
}
|
|
|
|
/// Handle the mapping for the passed button if any. Returns true if there
|
|
/// was a mapping and the button was handled.
|
|
fn handlePointerMapping(self: *Self, event: *wlr.Pointer.event.Button, view: *View) bool {
|
|
const wlr_keyboard = self.seat.wlr_seat.getKeyboard() orelse return false;
|
|
const modifiers = wlr_keyboard.getModifiers();
|
|
|
|
const fullscreen = view.current.fullscreen or view.pending.fullscreen;
|
|
|
|
return for (server.config.modes.items[self.seat.mode_id].pointer_mappings.items) |mapping| {
|
|
if (event.button == mapping.event_code and std.meta.eql(modifiers, mapping.modifiers)) {
|
|
switch (mapping.action) {
|
|
.move => if (!fullscreen) self.enterMode(.move, view),
|
|
.resize => if (!fullscreen) self.enterMode(.resize, view),
|
|
}
|
|
break true;
|
|
}
|
|
} else false;
|
|
}
|
|
|
|
/// Frame events are sent after regular pointer events to group multiple
|
|
/// events together. For instance, two axis events may happen at the same
|
|
/// time, in which case a frame event won't be sent in between.
|
|
fn handleFrame(listener: *wl.Listener(*wlr.Cursor), _: *wlr.Cursor) void {
|
|
const self = @fieldParentPtr(Self, "frame", listener);
|
|
self.seat.wlr_seat.pointerNotifyFrame();
|
|
}
|
|
|
|
/// This event is forwarded by the cursor when a pointer emits an _absolute_
|
|
/// motion event, from 0..1 on each axis. This happens, for example, when
|
|
/// wlroots is running under a Wayland window rather than KMS+DRM, and you
|
|
/// move the mouse over the window. You could enter the window from any edge,
|
|
/// so we have to warp the mouse there. There is also some hardware which
|
|
/// emits these events.
|
|
fn handleMotionAbsolute(
|
|
listener: *wl.Listener(*wlr.Pointer.event.MotionAbsolute),
|
|
event: *wlr.Pointer.event.MotionAbsolute,
|
|
) void {
|
|
const self = @fieldParentPtr(Self, "motion_absolute", listener);
|
|
|
|
self.seat.handleActivity();
|
|
|
|
var lx: f64 = undefined;
|
|
var ly: f64 = undefined;
|
|
self.wlr_cursor.absoluteToLayoutCoords(event.device, event.x, event.y, &lx, &ly);
|
|
|
|
const dx = lx - self.wlr_cursor.x;
|
|
const dy = ly - self.wlr_cursor.y;
|
|
self.processMotion(event.device, event.time_msec, dx, dy, dx, dy);
|
|
}
|
|
|
|
/// This event is forwarded by the cursor when a pointer emits a _relative_
|
|
/// pointer motion event (i.e. a delta)
|
|
fn handleMotion(
|
|
listener: *wl.Listener(*wlr.Pointer.event.Motion),
|
|
event: *wlr.Pointer.event.Motion,
|
|
) void {
|
|
const self = @fieldParentPtr(Self, "motion", listener);
|
|
|
|
self.seat.handleActivity();
|
|
|
|
self.processMotion(event.device, event.time_msec, event.delta_x, event.delta_y, event.unaccel_dx, event.unaccel_dy);
|
|
}
|
|
|
|
fn handleRequestSetCursor(
|
|
listener: *wl.Listener(*wlr.Seat.event.RequestSetCursor),
|
|
event: *wlr.Seat.event.RequestSetCursor,
|
|
) void {
|
|
// This event is rasied by the seat when a client provides a cursor image
|
|
const self = @fieldParentPtr(Self, "request_set_cursor", listener);
|
|
const focused_client = self.seat.wlr_seat.pointer_state.focused_client;
|
|
|
|
// This can be sent by any client, so we check to make sure this one is
|
|
// actually has pointer focus first.
|
|
if (focused_client == event.seat_client) {
|
|
// Once we've vetted the client, we can tell the cursor to use the
|
|
// provided surface as the cursor image. It will set the hardware cursor
|
|
// on the output that it's currently on and continue to do so as the
|
|
// cursor moves between outputs.
|
|
log.debug("focused client set cursor", .{});
|
|
self.wlr_cursor.setSurface(event.surface, event.hotspot_x, event.hotspot_y);
|
|
self.image = .unknown;
|
|
}
|
|
}
|
|
|
|
pub fn hide(self: *Self) void {
|
|
if (self.pressed_count > 0) return;
|
|
self.hidden = true;
|
|
self.wlr_cursor.setImage(null, 0, 0, 0, 0, 0, 0);
|
|
self.image = .unknown;
|
|
self.seat.wlr_seat.pointerNotifyClearFocus();
|
|
self.hide_cursor_timer.timerUpdate(0) catch {
|
|
log.err("failed to update cursor hide timeout", .{});
|
|
};
|
|
}
|
|
|
|
pub fn unhide(self: *Self) void {
|
|
self.hide_cursor_timer.timerUpdate(server.config.cursor_hide_timeout) catch {
|
|
log.err("failed to update cursor hide timeout", .{});
|
|
};
|
|
if (!self.hidden) return;
|
|
self.hidden = false;
|
|
self.updateState();
|
|
}
|
|
|
|
fn handleHideCursorTimeout(self: *Self) callconv(.C) c_int {
|
|
log.debug("hide cursor timeout", .{});
|
|
self.hide();
|
|
return 0;
|
|
}
|
|
|
|
const SurfaceAtResult = struct {
|
|
surface: *wlr.Surface,
|
|
sx: f64,
|
|
sy: f64,
|
|
parent: union(enum) {
|
|
view: *View,
|
|
layer_surface: *LayerSurface,
|
|
xwayland_override_redirect: if (build_options.xwayland) *XwaylandOverrideRedirect else void,
|
|
},
|
|
};
|
|
|
|
/// Find the surface under the cursor if any, and return information about that
|
|
/// surface and the cursor's position in surface local coords.
|
|
pub fn surfaceAt(self: Self) ?SurfaceAtResult {
|
|
return surfaceAtCoords(self.wlr_cursor.x, self.wlr_cursor.y);
|
|
}
|
|
|
|
/// Find the surface at the given layout coords if any, and return information about that
|
|
/// surface and the surface local coords.
|
|
/// This function must be kept in sync with the rendering order in render.zig.
|
|
fn surfaceAtCoords(lx: f64, ly: f64) ?SurfaceAtResult {
|
|
const wlr_output = server.root.output_layout.outputAt(lx, ly) orelse return null;
|
|
const output = @intToPtr(*Output, wlr_output.data);
|
|
|
|
// Get output-local coords from the layout coords
|
|
var ox = lx;
|
|
var oy = ly;
|
|
server.root.output_layout.outputCoords(wlr_output, &ox, &oy);
|
|
|
|
// Find the first visible fullscreen view in the stack if there is one
|
|
var it = ViewStack(View).iter(output.views.first, .forward, output.current.tags, surfaceAtFilter);
|
|
const fullscreen_view = while (it.next()) |view| {
|
|
if (view.current.fullscreen) break view;
|
|
} else null;
|
|
|
|
// Check surfaces in the reverse order they are rendered in:
|
|
//
|
|
// fullscreen:
|
|
// 1. overlay layer toplevels and popups
|
|
// 2. xwayland override redirect windows
|
|
// 3. fullscreen view toplevels and popups
|
|
//
|
|
// non-fullscreen:
|
|
// 1. overlay layer toplevels and popups
|
|
// 2. top, bottom, background layer popups
|
|
// 3. top layer toplevels
|
|
// 4. xwayland override redirect windows
|
|
// 5. view toplevels and popups
|
|
// 6. bottom, background layer toplevels
|
|
|
|
if (layerSurfaceAt(output.getLayer(.overlay).*, ox, oy)) |s| return s;
|
|
|
|
if (fullscreen_view) |view| {
|
|
if (build_options.xwayland) if (xwaylandOverrideRedirectSurfaceAt(lx, ly)) |s| return s;
|
|
var sx: f64 = undefined;
|
|
var sy: f64 = undefined;
|
|
if (view.surfaceAt(ox, oy, &sx, &sy)) |found| {
|
|
return SurfaceAtResult{
|
|
.surface = found,
|
|
.sx = sx,
|
|
.sy = sy,
|
|
.parent = .{ .view = view },
|
|
};
|
|
}
|
|
} else {
|
|
for ([_]zwlr.LayerShellV1.Layer{ .top, .bottom, .background }) |layer| {
|
|
if (layerPopupSurfaceAt(output.getLayer(layer).*, ox, oy)) |s| return s;
|
|
}
|
|
|
|
if (layerSurfaceAt(output.getLayer(.top).*, ox, oy)) |s| return s;
|
|
|
|
if (build_options.xwayland) if (xwaylandOverrideRedirectSurfaceAt(lx, ly)) |s| return s;
|
|
|
|
if (viewSurfaceAt(output, ox, oy)) |s| return s;
|
|
|
|
for ([_]zwlr.LayerShellV1.Layer{ .bottom, .background }) |layer| {
|
|
if (layerSurfaceAt(output.getLayer(layer).*, ox, oy)) |s| return s;
|
|
}
|
|
}
|
|
|
|
return null;
|
|
}
|
|
|
|
/// Find the topmost popup surface on the given layer at ox,oy.
|
|
fn layerPopupSurfaceAt(layer: std.TailQueue(LayerSurface), ox: f64, oy: f64) ?SurfaceAtResult {
|
|
var it = layer.first;
|
|
while (it) |node| : (it = node.next) {
|
|
const layer_surface = &node.data;
|
|
var sx: f64 = undefined;
|
|
var sy: f64 = undefined;
|
|
if (layer_surface.wlr_layer_surface.popupSurfaceAt(
|
|
ox - @intToFloat(f64, layer_surface.box.x),
|
|
oy - @intToFloat(f64, layer_surface.box.y),
|
|
&sx,
|
|
&sy,
|
|
)) |found| {
|
|
return SurfaceAtResult{
|
|
.surface = found,
|
|
.sx = sx,
|
|
.sy = sy,
|
|
.parent = .{ .layer_surface = layer_surface },
|
|
};
|
|
}
|
|
}
|
|
return null;
|
|
}
|
|
|
|
/// Find the topmost surface (or popup surface) on the given layer at ox,oy.
|
|
fn layerSurfaceAt(layer: std.TailQueue(LayerSurface), ox: f64, oy: f64) ?SurfaceAtResult {
|
|
var it = layer.first;
|
|
while (it) |node| : (it = node.next) {
|
|
const layer_surface = &node.data;
|
|
var sx: f64 = undefined;
|
|
var sy: f64 = undefined;
|
|
if (layer_surface.wlr_layer_surface.surfaceAt(
|
|
ox - @intToFloat(f64, layer_surface.box.x),
|
|
oy - @intToFloat(f64, layer_surface.box.y),
|
|
&sx,
|
|
&sy,
|
|
)) |found| {
|
|
return SurfaceAtResult{
|
|
.surface = found,
|
|
.sx = sx,
|
|
.sy = sy,
|
|
.parent = .{ .layer_surface = layer_surface },
|
|
};
|
|
}
|
|
}
|
|
return null;
|
|
}
|
|
|
|
/// Find the topmost visible view surface (incl. popups) at ox,oy.
|
|
fn viewSurfaceAt(output: *const Output, ox: f64, oy: f64) ?SurfaceAtResult {
|
|
var sx: f64 = undefined;
|
|
var sy: f64 = undefined;
|
|
|
|
// focused, floating views
|
|
var it = ViewStack(View).iter(output.views.first, .forward, output.current.tags, surfaceAtFilter);
|
|
while (it.next()) |view| {
|
|
if (view.current.focus == 0 or !view.current.float) continue;
|
|
if (view.surfaceAt(ox, oy, &sx, &sy)) |found| {
|
|
return SurfaceAtResult{
|
|
.surface = found,
|
|
.sx = sx,
|
|
.sy = sy,
|
|
.parent = .{ .view = view },
|
|
};
|
|
}
|
|
}
|
|
|
|
// non-focused, floating views
|
|
it = ViewStack(View).iter(output.views.first, .forward, output.current.tags, surfaceAtFilter);
|
|
while (it.next()) |view| {
|
|
if (view.current.focus != 0 or !view.current.float) continue;
|
|
if (view.surfaceAt(ox, oy, &sx, &sy)) |found| {
|
|
return SurfaceAtResult{
|
|
.surface = found,
|
|
.sx = sx,
|
|
.sy = sy,
|
|
.parent = .{ .view = view },
|
|
};
|
|
}
|
|
}
|
|
|
|
// focused, non-floating views
|
|
it = ViewStack(View).iter(output.views.first, .forward, output.current.tags, surfaceAtFilter);
|
|
while (it.next()) |view| {
|
|
if (view.current.focus == 0 or view.current.float) continue;
|
|
if (view.surfaceAt(ox, oy, &sx, &sy)) |found| {
|
|
return SurfaceAtResult{
|
|
.surface = found,
|
|
.sx = sx,
|
|
.sy = sy,
|
|
.parent = .{ .view = view },
|
|
};
|
|
}
|
|
}
|
|
|
|
// non-focused, non-floating views
|
|
it = ViewStack(View).iter(output.views.first, .forward, output.current.tags, surfaceAtFilter);
|
|
while (it.next()) |view| {
|
|
if (view.current.focus != 0 or view.current.float) continue;
|
|
if (view.surfaceAt(ox, oy, &sx, &sy)) |found| {
|
|
return SurfaceAtResult{
|
|
.surface = found,
|
|
.sx = sx,
|
|
.sy = sy,
|
|
.parent = .{ .view = view },
|
|
};
|
|
}
|
|
}
|
|
|
|
return null;
|
|
}
|
|
|
|
fn xwaylandOverrideRedirectSurfaceAt(lx: f64, ly: f64) ?SurfaceAtResult {
|
|
var it = server.root.xwayland_override_redirect_views.first;
|
|
while (it) |node| : (it = node.next) {
|
|
const xwayland_surface = node.data.xwayland_surface;
|
|
var sx: f64 = undefined;
|
|
var sy: f64 = undefined;
|
|
if (xwayland_surface.surface.?.surfaceAt(
|
|
lx - @intToFloat(f64, xwayland_surface.x),
|
|
ly - @intToFloat(f64, xwayland_surface.y),
|
|
&sx,
|
|
&sy,
|
|
)) |found| {
|
|
return SurfaceAtResult{
|
|
.surface = found,
|
|
.sx = sx,
|
|
.sy = sy,
|
|
.parent = .{ .xwayland_override_redirect = &node.data },
|
|
};
|
|
}
|
|
}
|
|
return null;
|
|
}
|
|
|
|
fn surfaceAtFilter(view: *View, filter_tags: u32) bool {
|
|
return view.surface != null and view.current.tags & filter_tags != 0;
|
|
}
|
|
|
|
pub fn enterMode(self: *Self, mode: enum { move, resize }, view: *View) void {
|
|
log.debug("enter {s} cursor mode", .{@tagName(mode)});
|
|
|
|
self.seat.focus(view);
|
|
|
|
switch (mode) {
|
|
.move => self.mode = .{ .move = .{ .view = view } },
|
|
.resize => {
|
|
const cur_box = &view.current.box;
|
|
self.mode = .{ .resize = .{
|
|
.view = view,
|
|
.offset_x = cur_box.x + cur_box.width - @floatToInt(i32, self.wlr_cursor.x),
|
|
.offset_y = cur_box.y + cur_box.height - @floatToInt(i32, self.wlr_cursor.y),
|
|
} };
|
|
view.setResizing(true);
|
|
},
|
|
}
|
|
|
|
// Automatically float all views being moved by the pointer, if
|
|
// their dimensions are set by a layout generator. If however the views
|
|
// are unarranged, leave them as non-floating so the next active
|
|
// layout can affect them.
|
|
if (!view.current.float and view.output.current.layout != null) {
|
|
view.pending.float = true;
|
|
view.float_box = view.current.box;
|
|
view.applyPending();
|
|
} else {
|
|
// The View.applyPending() call in the other branch starts
|
|
// the transaction needed after the seat.focus() call above.
|
|
server.root.startTransaction();
|
|
}
|
|
|
|
// Clear cursor focus, so that the surface does not receive events
|
|
self.seat.wlr_seat.pointerNotifyClearFocus();
|
|
|
|
self.setImage(if (mode == .move) .move else .@"se-resize");
|
|
}
|
|
|
|
/// Return from down/move/resize to passthrough
|
|
fn leaveMode(self: *Self, event: *wlr.Pointer.event.Button) void {
|
|
log.debug("leave {s} mode", .{@tagName(self.mode)});
|
|
|
|
switch (self.mode) {
|
|
.passthrough => unreachable,
|
|
.down => {
|
|
// If we were in down mode, we need pass along the release event
|
|
_ = self.seat.wlr_seat.pointerNotifyButton(event.time_msec, event.button, event.state);
|
|
},
|
|
.move => {},
|
|
.resize => |resize| resize.view.setResizing(false),
|
|
}
|
|
|
|
self.mode = .passthrough;
|
|
self.passthrough(event.time_msec);
|
|
}
|
|
|
|
fn processMotion(self: *Self, device: *wlr.InputDevice, time: u32, delta_x: f64, delta_y: f64, unaccel_dx: f64, unaccel_dy: f64) void {
|
|
self.unhide();
|
|
|
|
server.input_manager.relative_pointer_manager.sendRelativeMotion(
|
|
self.seat.wlr_seat,
|
|
@as(u64, time) * 1000,
|
|
delta_x,
|
|
delta_y,
|
|
unaccel_dx,
|
|
unaccel_dy,
|
|
);
|
|
var dx: f64 = delta_x;
|
|
var dy: f64 = delta_y;
|
|
if (self.constraint) |constraint| {
|
|
if (self.mode == .passthrough or self.mode == .down) {
|
|
if (constraint.type == .locked) return;
|
|
|
|
const result = self.surfaceAt() orelse return;
|
|
|
|
if (result.surface != constraint.surface) return;
|
|
|
|
const sx = result.sx;
|
|
const sy = result.sy;
|
|
var sx_con: f64 = undefined;
|
|
var sy_con: f64 = undefined;
|
|
if (!wlr.region.confine(&constraint.region, sx, sy, sx + dx, sy + dy, &sx_con, &sy_con)) {
|
|
return;
|
|
}
|
|
|
|
dx = sx_con - sx;
|
|
dy = sy_con - sy;
|
|
}
|
|
}
|
|
switch (self.mode) {
|
|
.passthrough => {
|
|
self.wlr_cursor.move(device, dx, dy);
|
|
self.checkFocusFollowsCursor();
|
|
self.passthrough(time);
|
|
},
|
|
.down => |down| {
|
|
self.wlr_cursor.move(device, dx, dy);
|
|
self.seat.wlr_seat.pointerNotifyMotion(
|
|
time,
|
|
down.sx + (self.wlr_cursor.x - down.lx),
|
|
down.sy + (self.wlr_cursor.y - down.ly),
|
|
);
|
|
},
|
|
.move => |*data| {
|
|
dx += data.delta_x;
|
|
dy += data.delta_y;
|
|
data.delta_x = dx - @trunc(dx);
|
|
data.delta_y = dy - @trunc(dy);
|
|
|
|
const view = data.view;
|
|
view.move(@floatToInt(i32, dx), @floatToInt(i32, dy));
|
|
self.wlr_cursor.move(
|
|
device,
|
|
@intToFloat(f64, view.pending.box.x - view.current.box.x),
|
|
@intToFloat(f64, view.pending.box.y - view.current.box.y),
|
|
);
|
|
view.applyPending();
|
|
},
|
|
.resize => |*data| {
|
|
dx += data.delta_x;
|
|
dy += data.delta_y;
|
|
data.delta_x = dx - @trunc(dx);
|
|
data.delta_y = dy - @trunc(dy);
|
|
|
|
const border_width = if (data.view.draw_borders) server.config.border_width else 0;
|
|
|
|
// Set width/height of view, clamp to view size constraints and output dimensions
|
|
data.view.pending.box.width += @floatToInt(i32, dx);
|
|
data.view.pending.box.height += @floatToInt(i32, dy);
|
|
data.view.applyConstraints();
|
|
|
|
var output_width: i32 = undefined;
|
|
var output_height: i32 = undefined;
|
|
data.view.output.wlr_output.effectiveResolution(&output_width, &output_height);
|
|
|
|
const box = &data.view.pending.box;
|
|
box.width = math.min(box.width, output_width - border_width - box.x);
|
|
box.height = math.min(box.height, output_height - border_width - box.y);
|
|
|
|
data.view.applyPending();
|
|
|
|
// Keep cursor locked to the original offset from the bottom right corner
|
|
self.wlr_cursor.warpClosest(
|
|
device,
|
|
@intToFloat(f64, box.x + box.width - data.offset_x),
|
|
@intToFloat(f64, box.y + box.height - data.offset_y),
|
|
);
|
|
},
|
|
}
|
|
}
|
|
|
|
pub fn checkFocusFollowsCursor(self: *Self) void {
|
|
// Don't do focus-follows-cursor if a drag is in progress as focus change can't occur
|
|
if (self.seat.pointer_drag) return;
|
|
if (server.config.focus_follows_cursor == .disabled) return;
|
|
if (self.surfaceAt()) |result| {
|
|
if (server.config.focus_follows_cursor == .always or
|
|
self.seat.wlr_seat.pointer_state.focused_surface != result.surface)
|
|
{
|
|
switch (result.parent) {
|
|
.view => |view| {
|
|
if (self.seat.focused != .view or self.seat.focused.view != view) {
|
|
self.seat.focusOutput(view.output);
|
|
self.seat.focus(view);
|
|
server.root.startTransaction();
|
|
}
|
|
},
|
|
.layer_surface => {},
|
|
.xwayland_override_redirect => assert(build_options.xwayland),
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
/// Handle potential change in location of views on the output, as well as
|
|
/// the target view of a cursor operation potentially being moved to a non-visible tag,
|
|
/// becoming fullscreen, etc.
|
|
pub fn updateState(self: *Self) void {
|
|
if (self.shouldPassthrough()) {
|
|
self.mode = .passthrough;
|
|
var now: os.timespec = undefined;
|
|
os.clock_gettime(os.CLOCK.MONOTONIC, &now) catch @panic("CLOCK_MONOTONIC not supported");
|
|
const msec = @intCast(u32, now.tv_sec * std.time.ms_per_s +
|
|
@divTrunc(now.tv_nsec, std.time.ns_per_ms));
|
|
self.passthrough(msec);
|
|
}
|
|
}
|
|
|
|
fn shouldPassthrough(self: Self) bool {
|
|
// We clear focus on hiding the cursor and should not re-focus until the cursor is moved
|
|
// and shown again.
|
|
if (self.hidden) return false;
|
|
|
|
switch (self.mode) {
|
|
.passthrough => {
|
|
// If we are not currently in down/resize/move mode, we *always* need to passthrough()
|
|
// as what is under the cursor may have changed and we are not locked to a single
|
|
// target view.
|
|
return true;
|
|
},
|
|
.down => {
|
|
// TODO: It's hard to determine from the target surface alone whether
|
|
// the surface is visible or not currently. Switching to the wlroots
|
|
// scene graph will fix this, but for now just don't bother.
|
|
return false;
|
|
},
|
|
.resize, .move => {
|
|
const target = if (self.mode == .resize) self.mode.resize.view else self.mode.move.view;
|
|
// The target view is no longer visible, is part of the layout, or is fullscreen.
|
|
return target.current.tags & target.output.current.tags == 0 or
|
|
(!target.current.float and target.output.current.layout != null) or
|
|
target.current.fullscreen;
|
|
},
|
|
}
|
|
}
|
|
|
|
/// Pass an event on to the surface under the cursor, if any.
|
|
fn passthrough(self: *Self, time: u32) void {
|
|
assert(self.mode == .passthrough);
|
|
|
|
if (self.surfaceAt()) |result| {
|
|
// If input is allowed on the surface, send pointer enter and motion
|
|
// events. Note that wlroots won't actually send an enter event if
|
|
// the surface has already been entered.
|
|
if (server.input_manager.inputAllowed(result.surface)) {
|
|
self.seat.wlr_seat.pointerNotifyEnter(result.surface, result.sx, result.sy);
|
|
self.seat.wlr_seat.pointerNotifyMotion(time, result.sx, result.sy);
|
|
}
|
|
} else {
|
|
// There is either no surface under the cursor or input is disallowed
|
|
// Reset the cursor image to the default and clear focus.
|
|
self.clearFocus();
|
|
}
|
|
}
|