120 lines
3.8 KiB
Rust
120 lines
3.8 KiB
Rust
// Copyright (c) 2023-2024 Sophie Herold
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// Copyright (c) 2023 FineFindus
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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, either version 3 of the License, or
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// (at your option) any later version.
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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 <http://www.gnu.org/licenses/>.
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//
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// SPDX-License-Identifier: GPL-3.0-or-later
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//! A widget that shows an overlay when dragging an image over the window
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//!
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//! This implementation is inspired by [Amberol](https://gitlab.gnome.org/World/amberol)
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use adw::prelude::*;
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use crate::deps::*;
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mod imp {
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use std::cell::OnceCell;
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use adw::subclass::prelude::*;
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use glib::{ParamSpec, Properties, Value};
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use super::*;
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#[derive(Debug, Default, Properties)]
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#[properties(wrapper_type = super::LpDragOverlay)]
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pub struct LpDragOverlay {
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/// Usual content
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#[property(set = Self::set_child)]
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pub child: Option<gtk::Widget>,
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/// Widget overplayed when dragging over child
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#[property(set = Self::set_overlayed)]
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pub overlayed: Option<gtk::Widget>,
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pub overlay: gtk::Overlay,
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pub revealer: gtk::Revealer,
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#[property(set = Self::set_drop_target, get, explicit_notify, construct_only)]
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pub drop_target: OnceCell<gtk::DropTarget>,
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}
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#[glib::object_subclass]
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impl ObjectSubclass for LpDragOverlay {
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const NAME: &'static str = "LpDragOverlay";
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type Type = super::LpDragOverlay;
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type ParentType = adw::Bin;
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fn class_init(klass: &mut Self::Class) {
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klass.set_css_name("lpdragoverlay");
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}
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}
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impl ObjectImpl for LpDragOverlay {
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fn properties() -> &'static [ParamSpec] {
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Self::derived_properties()
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}
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fn set_property(&self, id: usize, value: &Value, pspec: &ParamSpec) {
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self.derived_set_property(id, value, pspec)
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}
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fn property(&self, id: usize, pspec: &ParamSpec) -> Value {
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self.derived_property(id, pspec)
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}
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fn constructed(&self) {
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self.overlay.set_parent(&*self.obj());
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self.overlay.add_overlay(&self.revealer);
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self.revealer.set_can_target(false);
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self.revealer
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.set_transition_type(gtk::RevealerTransitionType::Crossfade);
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self.revealer.set_reveal_child(false);
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}
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fn dispose(&self) {
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self.overlay.unparent();
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}
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}
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impl WidgetImpl for LpDragOverlay {}
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impl BinImpl for LpDragOverlay {}
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impl LpDragOverlay {
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pub fn set_child(&self, child: Option<gtk::Widget>) {
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self.overlay.set_child(child.as_ref());
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}
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pub fn set_overlayed(&self, overlayed: Option<gtk::Widget>) {
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self.revealer.set_child(overlayed.as_ref());
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}
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pub fn set_drop_target(&self, drop_target: gtk::DropTarget) {
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drop_target.connect_current_drop_notify(glib::clone!(
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#[weak(rename_to = revealer)]
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self.revealer,
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move |target| {
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let reveal = target.current_drop().is_some();
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revealer.set_reveal_child(reveal);
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}
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));
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self.drop_target.set(drop_target).unwrap();
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self.obj().notify("drop-target");
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}
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}
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}
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glib::wrapper! {
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pub struct LpDragOverlay(ObjectSubclass<imp::LpDragOverlay>)
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@extends gtk::Widget, adw::Bin;
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}
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