241 lines
8.5 KiB
Rust
241 lines
8.5 KiB
Rust
// Copyright (c) 2022-2024 Sophie Herold
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// Copyright (c) 2022 Christopher Davis
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// Copyright (c) 2023 Julian Hofer
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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 the image, a loading screen, or an error page
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//!
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//! This widget also handles showing the context menu.
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use adw::subclass::prelude::*;
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use glib::{clone, Properties};
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use gtk::prelude::*;
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use gtk::CompositeTemplate;
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use super::LpErrorDetails;
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use crate::deps::*;
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use crate::util::gettext::*;
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use crate::widgets::LpImage;
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mod imp {
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use super::*;
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#[derive(Debug, Default, CompositeTemplate, Properties)]
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#[properties(wrapper_type = super::LpImagePage)]
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#[template(file = "image_page.ui")]
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pub struct LpImagePage {
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#[template_child]
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pub(super) stack: TemplateChild<gtk::Stack>,
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#[template_child]
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pub(super) spinner_page: TemplateChild<gtk::Widget>,
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#[template_child]
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pub(super) error_page: TemplateChild<adw::StatusPage>,
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#[template_child]
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pub(super) error_more_info: TemplateChild<gtk::Button>,
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#[template_child]
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pub(super) image_stack_page: TemplateChild<gtk::Widget>,
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#[template_child]
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pub(super) spinner: TemplateChild<gtk::Spinner>,
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#[template_child]
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pub(super) scrolled_window: TemplateChild<gtk::ScrolledWindow>,
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#[template_child]
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#[property(type = LpImage, get = Self::image)]
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pub(super) image: TemplateChild<LpImage>,
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#[template_child]
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pub(super) popover: TemplateChild<gtk::PopoverMenu>,
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#[template_child]
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pub(super) right_click_gesture: TemplateChild<gtk::GestureClick>,
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#[template_child]
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pub(super) press_gesture: TemplateChild<gtk::GestureLongPress>,
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}
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#[glib::object_subclass]
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impl ObjectSubclass for LpImagePage {
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const NAME: &'static str = "LpImagePage";
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type Type = super::LpImagePage;
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type ParentType = adw::Bin;
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fn class_init(klass: &mut Self::Class) {
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Self::bind_template(klass);
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}
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fn instance_init(obj: &glib::subclass::InitializingObject<Self>) {
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obj.init_template();
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}
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}
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impl ObjectImpl for LpImagePage {
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fn properties() -> &'static [glib::ParamSpec] {
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Self::derived_properties()
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}
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fn property(&self, id: usize, pspec: &glib::ParamSpec) -> glib::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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let obj = self.obj();
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self.parent_constructed();
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self.right_click_gesture
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.connect_pressed(clone!(@weak obj => move |gesture, _, x, y| {
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obj.show_popover_at(x, y);
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gesture.set_state(gtk::EventSequenceState::Claimed);
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}));
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self.press_gesture
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.connect_pressed(clone!(@weak obj => move |gesture, x, y| {
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log::debug!("Long press triggered");
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obj.show_popover_at(x, y);
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gesture.set_state(gtk::EventSequenceState::Claimed);
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}));
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self.stack
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.connect_visible_child_notify(clone!(@weak obj => move |stack| {
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let imp = obj.imp();
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let spinner_visible =
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stack.visible_child().as_ref() == Some(imp.spinner_page.upcast_ref());
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// Hide spinner for crossfading into other content since it does not look great
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imp.spinner.set_visible(spinner_visible);
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}));
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obj.image()
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.connect_is_loaded_notify(clone!(@weak obj => move |_| {
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if obj.image().is_loaded() {
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log::debug!("Showing image");
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obj.imp()
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.stack
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.set_visible_child(&*obj.imp().image_stack_page);
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}
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}));
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obj.image()
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.connect_error_notify(clone!(@weak obj => move |_| {
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glib::spawn_future_local(async move { obj.show_error().await });
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}));
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// Do not waste CPU on spinner if it is not visible
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self.spinner.connect_map(|s| s.start());
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self.spinner.connect_unmap(|s| s.stop());
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}
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}
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impl WidgetImpl for LpImagePage {}
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impl BinImpl for LpImagePage {}
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impl LpImagePage {
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pub fn image(&self) -> LpImage {
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self.image.get()
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}
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}
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}
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glib::wrapper! {
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pub struct LpImagePage(ObjectSubclass<imp::LpImagePage>)
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@extends gtk::Widget, adw::Bin,
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@implements gtk::Buildable, gtk::ConstraintTarget, gtk::Orientable;
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}
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impl LpImagePage {
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pub fn from_file(file: &gio::File) -> Self {
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let obj = glib::Object::new::<Self>();
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obj.imp().image.init(file);
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glib::spawn_future_local(clone!(@weak obj, @strong file => async move {
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let imp = obj.imp();
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imp.image.load(&file).await;
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}));
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obj
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}
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pub fn file(&self) -> gio::File {
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self.image().file().unwrap()
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}
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pub fn scrolled_window(&self) -> gtk::ScrolledWindow {
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self.imp().scrolled_window.clone()
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}
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pub fn content_provider(&self) -> Option<gdk::ContentProvider> {
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self.imp().image.content_provider()
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}
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pub fn show_popover_at(&self, x: f64, y: f64) {
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let imp = self.imp();
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let rect = gdk::Rectangle::new(x as i32, y as i32, 0, 0);
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imp.popover.set_pointing_to(Some(&rect));
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imp.popover.popup();
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}
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pub async fn show_error(&self) {
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let imp = self.imp();
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let image = self.image();
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if image.is_unsupported() {
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let message = if glycin::supported_mime_types().await.is_empty() {
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// Translators: {} is replace with a version number
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gettext_f(
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"No image loaders available. Mabye the “glycin-loaders” package with compatibility version “{}+” is not installed.",
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[ format!("{}+", glycin::COMPAT_VERSION)])
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} else {
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let mime_type = image.metadata().mime_type().unwrap_or_default();
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let content_type = gio::content_type_from_mime_type(&mime_type).unwrap_or_default();
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let description = gio::content_type_get_description(&content_type).to_string();
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if glycin::DEFAULT_MIME_TYPES.contains(&mime_type.as_str()) {
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// Translators: The first occurance of {} is replace with a description of the
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// format and the second with an id (mime-type) of the format.
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gettext_f(
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"The image format “{} ({})” is known but not installed.",
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[&description, &mime_type],
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)
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} else {
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// Translators: The first occurance of {} is replace with a description of the
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// format and the second with an id (mime-type) of the format.
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gettext_f(
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"Unknown image format “{} ({}).”",
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[&description, &mime_type],
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)
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}
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};
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imp.error_page.set_description(Some(&message));
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imp.error_more_info.set_visible(false);
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imp.stack.set_visible_child(&*imp.error_page);
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} else if let Some(err) = image.error() {
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imp.error_more_info
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.connect_clicked(glib::clone!(@weak self as obj => move |_| {
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LpErrorDetails::new(&obj.root().unwrap(), &err);
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}));
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imp.error_page.set_description(Some(&gettext(
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"Either the image file is corrupted or it contains unsupported elements.",
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)));
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imp.error_more_info.set_visible(true);
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imp.stack.set_visible_child(&*imp.error_page);
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}
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}
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}
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