80 lines
2.6 KiB
Zig
80 lines
2.6 KiB
Zig
// This file is part of river, a dynamic tiling wayland compositor.
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//
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// Copyright 2020-2021 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 DragIcon = @This();
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const std = @import("std");
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const wlr = @import("wlroots");
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const wl = @import("wayland").server.wl;
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const server = &@import("main.zig").server;
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const util = @import("util.zig");
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const Cursor = @import("Cursor.zig");
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const SceneNodeData = @import("SceneNodeData.zig");
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wlr_drag_icon: *wlr.Drag.Icon,
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scene_drag_icon: *wlr.SceneTree,
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destroy: wl.Listener(*wlr.Drag.Icon) = wl.Listener(*wlr.Drag.Icon).init(handleDestroy),
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pub fn create(wlr_drag_icon: *wlr.Drag.Icon, cursor: *Cursor) error{OutOfMemory}!void {
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const scene_drag_icon = try server.root.drag_icons.createSceneDragIcon(wlr_drag_icon);
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errdefer scene_drag_icon.node.destroy();
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const drag_icon = try util.gpa.create(DragIcon);
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errdefer util.gpa.destroy(drag_icon);
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drag_icon.* = .{
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.wlr_drag_icon = wlr_drag_icon,
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.scene_drag_icon = scene_drag_icon,
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};
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scene_drag_icon.node.data = @intFromPtr(drag_icon);
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drag_icon.updatePosition(cursor);
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wlr_drag_icon.events.destroy.add(&drag_icon.destroy);
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}
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pub fn updatePosition(drag_icon: *DragIcon, cursor: *Cursor) void {
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switch (drag_icon.wlr_drag_icon.drag.grab_type) {
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.keyboard => unreachable,
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.keyboard_pointer => {
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drag_icon.scene_drag_icon.node.setPosition(
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@intFromFloat(cursor.wlr_cursor.x),
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@intFromFloat(cursor.wlr_cursor.y),
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);
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},
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.keyboard_touch => {
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const touch_id = drag_icon.wlr_drag_icon.drag.touch_id;
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if (cursor.touch_points.get(touch_id)) |point| {
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drag_icon.scene_drag_icon.node.setPosition(
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@intFromFloat(point.lx),
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@intFromFloat(point.ly),
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);
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}
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},
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}
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}
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fn handleDestroy(listener: *wl.Listener(*wlr.Drag.Icon), _: *wlr.Drag.Icon) void {
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const drag_icon = @fieldParentPtr(DragIcon, "destroy", listener);
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drag_icon.destroy.link.remove();
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util.gpa.destroy(drag_icon);
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}
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