236 lines
8.7 KiB
Rust
236 lines
8.7 KiB
Rust
// application.rs
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//
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// Copyright 2020 Christopher Davis <christopherdavis@gnome.org>
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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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use crate::deps::*;
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use crate::i18n::*;
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use adw::prelude::*;
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use adw::subclass::prelude::*;
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use crate::config;
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use crate::widgets::{LpImage, LpImagePage};
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use crate::window::LpWindow;
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mod imp {
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use super::*;
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// The basic struct that holds our
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// state and widgets
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#[derive(Default, Debug)]
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pub struct LpApplication {}
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// Sets up the basics for the GObject
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// The `#[glib::object_subclass] macro implements
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// some boilerplate code for the object setup, e.g. get_type()
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#[glib::object_subclass]
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impl ObjectSubclass for LpApplication {
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const NAME: &'static str = "LpApplication";
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type Type = super::LpApplication;
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type ParentType = adw::Application;
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}
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// Overrides GObject vfuncs
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impl ObjectImpl for LpApplication {
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fn constructed(&self) {
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let obj = self.instance();
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self.parent_constructed();
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// Force dark theme
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obj.style_manager()
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.set_color_scheme(adw::ColorScheme::PreferDark);
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// Set up the actions
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obj.setup_actions();
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}
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}
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// Overrides GApplication vfuncs
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impl ApplicationImpl for LpApplication {
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fn activate(&self) {
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let application = self.instance();
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let window = LpWindow::new(&*application);
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window.present();
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}
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// Handles opening files from the command line or other applications
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fn open(&self, files: &[gio::File], _hint: &str) {
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let application = self.instance();
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for file in files {
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let win = LpWindow::new(&*application);
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win.set_image_from_file(file, true);
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// show window when image size is known
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let watch = win
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.imp()
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.image_view
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.property_expression("current-page-strict")
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.chain_property::<LpImagePage>("image")
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.chain_property::<LpImage>("image-size")
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.watch(
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glib::Object::NONE,
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glib::clone!(@weak win => move || {
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win.image_size_ready();
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}),
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);
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win.imp().watch_image_size.replace(Some(watch));
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// show if loading image errors
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let watch = win
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.imp()
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.image_view
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.property_expression("current-page-strict")
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.chain_property::<LpImagePage>("error")
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.watch(
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glib::Object::NONE,
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glib::clone!(@weak win => move || {
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win.image_error();
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}),
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);
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win.imp().watch_image_error.replace(Some(watch));
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}
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}
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}
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// This is empty, but we still need to provide an
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// empty implementation for each type we subclass.
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impl GtkApplicationImpl for LpApplication {}
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impl AdwApplicationImpl for LpApplication {}
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}
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// Creates a wrapper struct that inherits the functions
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// from objects listed as @extends or interfaces it @implements.
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// This is what allows us to do e.g. application.quit() on
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// LpApplication without casting.
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glib::wrapper! {
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pub struct LpApplication(ObjectSubclass<imp::LpApplication>)
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@extends gio::Application, gtk::Application, adw::Application,
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@implements gio::ActionGroup, gio::ActionMap;
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}
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// This is where the member functions of LpApplication go.
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#[allow(clippy::new_without_default)]
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impl LpApplication {
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pub fn new() -> Self {
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glib::Object::builder()
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.property("application-id", config::APP_ID)
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.property("flags", gio::ApplicationFlags::HANDLES_OPEN)
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.property("resource-base-path", "/org/gnome/Loupe")
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.build()
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}
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pub fn setup_actions(&self) {
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// gio::ActionEntryBuilder allows us to build and store an action on an object
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// that implements gio::ActionMap. Here we build the application's actions and
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// add them with add_action_entries().
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let actions = [
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gio::ActionEntryBuilder::new("about")
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.activate(|app: &Self, _, _| app.show_about())
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.build(),
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gio::ActionEntryBuilder::new("help")
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.activate(|app: &Self, _, _| app.show_help())
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.build(),
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gio::ActionEntryBuilder::new("quit")
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.activate(|app: &Self, _, _| app.quit())
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.build(),
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gio::ActionEntryBuilder::new("new-window")
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.activate(|app: &Self, _, _| {
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let win = LpWindow::new(app);
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win.show();
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})
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.build(),
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];
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self.add_action_entries(actions).unwrap();
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self.set_accels_for_action("app.help", &["F1"]);
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self.set_accels_for_action("app.quit", &["<Ctrl>Q"]);
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self.set_accels_for_action("app.new-window", &["<Ctrl>N"]);
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self.set_accels_for_action("win.open", &["<Ctrl>O"]);
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self.set_accels_for_action("win.print", &["<Ctrl>P"]);
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self.set_accels_for_action("win.copy", &["<Ctrl>C"]);
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self.set_accels_for_action("win.show-help-overlay", &["<Ctrl>question"]);
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self.set_accels_for_action("win.leave-fullscreen", &["Escape"]);
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self.set_accels_for_action("win.toggle-properties", &["F9", "<Alt>Return"]);
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self.set_accels_for_action("win.toggle-fullscreen", &["F11"]);
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self.set_accels_for_action("win.set-background", &["<Ctrl>F8"]);
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self.set_accels_for_action("win.previous", &["Left"]);
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self.set_accels_for_action("win.next", &["Right"]);
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self.set_accels_for_action("win.zoom-to(1.0)", &["1", "KP_1", "<Ctrl>1", "<Ctrl>KP_1"]);
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self.set_accels_for_action("win.zoom-to(2.0)", &["2", "KP_2", "<Ctrl>2", "<Ctrl>KP_2"]);
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self.set_accels_for_action("win.zoom-best-fit", &["0", "KP_0", "<Ctrl>0", "<Ctrl>KP_0"]);
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self.set_accels_for_action(
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"win.zoom-in",
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&[
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"<Ctrl>plus",
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"plus",
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"<Ctrl>equal",
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"equal",
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"<Ctrl>KP_Add",
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"KP_Add",
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],
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);
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self.set_accels_for_action(
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"win.zoom-out",
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&["<Ctrl>minus", "minus", "<Ctrl>KP_Subtract", "KP_Subtract"],
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);
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self.set_accels_for_action("win.rotate(90.0)", &["<Ctrl>R"]);
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self.set_accels_for_action("win.rotate(-90.0)", &["<Ctrl><Shift>R"]);
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self.set_accels_for_action("window.close", &["<Ctrl>W"]);
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}
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pub fn show_about(&self) {
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// Builders are a pattern that allow you to create
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// an object and set all relevant properties very
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// easily in a way that's idiomatic to Rust.
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let about = adw::AboutWindow::builder()
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.application_name(&i18n("Loupe"))
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.application_icon(config::APP_ID)
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.version(config::VERSION)
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.developer_name(&i18n("Christopher Davis"))
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.website("https://gitlab.gnome.org/BrainBlasted/loupe")
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.issue_url("https://gitlab.gnome.org/BrainBlasted/loupe/-/issues/new")
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.developers(vec![
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String::from("Christopher Davis <christopherdavis@gnome.org>"),
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String::from("Sophie Herold <sophieherold@gnome.org>"),
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])
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.designers(vec![
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String::from("Allan Day"),
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String::from("Jakub Steiner"),
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String::from("Tobias Bernard"),
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])
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.copyright(&i18n("Copyright © 2020–2022 Christopher Davis et al."))
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.license_type(gtk::License::Gpl30)
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.build();
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if let Some(window) = self.active_window() {
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about.set_transient_for(Some(&window));
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}
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about.show();
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}
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pub fn show_help(&self) {
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gtk::show_uri(self.active_window().as_ref(), "help:loupe", 0);
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}
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}
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