Initial Commit
The initial commit of gnome-image-viewer. Things are in an MVP state, with image viewing and opening from the desktop functional. We also can open images externally, print them, and set them as backgrounds.
This commit is contained in:
Christopher Davis
commit
f692ab5626
38 changed files with 3807 additions and 0 deletions
296
src/window.rs
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296
src/window.rs
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// window.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 gio::prelude::*;
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use glib::clone;
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use glib::subclass::prelude::*;
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use gtk::prelude::*;
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use gtk::subclass::prelude::*;
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use gtk::CompositeTemplate;
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use gtk_macros::*;
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use libhandy::subclass::prelude as hdy;
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use crate::config;
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use crate::widgets::IvImageView;
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mod imp {
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use super::*;
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// To use composite templates, you need
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// to use derive macro. Derive macros generate
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// code to e.g. implement a trait on something.
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// In this case, code is generated for Debug output
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// and to handle binding the template children.
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//
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// For this derive macro, you need to have
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// `use gtk::CompositeTemplate` in your code.
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#[derive(Debug, CompositeTemplate)]
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pub struct IvWindow {
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// Template children are used with the
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// TemplateChild<T> wrapper, where T is the
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// object type of the template child.
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#[template_child]
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pub headerbar: TemplateChild<gtk::HeaderBar>,
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#[template_child]
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pub stack: TemplateChild<gtk::Stack>,
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#[template_child]
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pub status_page: TemplateChild<libhandy::StatusPage>,
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#[template_child]
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pub image_view: TemplateChild<IvImageView>,
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#[template_child]
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pub open_gesture: TemplateChild<gtk::GestureClick>,
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}
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impl ObjectSubclass for IvWindow {
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const NAME: &'static str = "IvWindow";
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type Type = super::IvWindow;
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type ParentType = libhandy::ApplicationWindow;
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type Instance = glib::subclass::simple::InstanceStruct<Self>;
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type Class = glib::subclass::simple::ClassStruct<Self>;
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glib::object_subclass!();
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fn new() -> Self {
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Self {
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// For the initial value, use this function.
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headerbar: TemplateChild::default(),
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stack: TemplateChild::default(),
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status_page: TemplateChild::default(),
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image_view: TemplateChild::default(),
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open_gesture: TemplateChild::default(),
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}
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}
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fn class_init(klass: &mut Self::Class) {
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klass.set_template_from_resource("/org/gnome/ImageViewer/gtk/window.ui");
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// bind_template_children() is a function generated by the
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// CompositeTemplate macro to bind all children at once.
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Self::bind_template_children(klass);
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}
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}
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impl ObjectImpl for IvWindow {
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fn constructed(&self, obj: &Self::Type) {
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obj.init_template();
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self.parent_constructed(obj);
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if config::PROFILE == ".Devel" {
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obj.add_css_class("devel");
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}
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obj.setup_actions();
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self.status_page
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.get() // .get() is needed for now to use template children.
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.set_icon_name(Some(&format!("{}-symbolic", config::APP_ID)));
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// Set help overlay
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let builder = gtk::Builder::from_resource("/org/gnome/ImageViewer/gtk/help_overlay.ui");
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let help_overlay = builder.get_object("help_overlay").unwrap();
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obj.set_help_overlay(Some(&help_overlay));
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// For callbacks, you will want to reference the GTK docs on
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// the relevant signal to see which parameters you need.
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// In this case, we need none to react to the gesture,
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// so "_" is used in all 4 spots.
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self.open_gesture
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.get()
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.connect_released(clone!(@weak obj => move |_, _, _, _| {
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obj.pick_file();
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}));
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obj.bind_property("fullscreened", &self.image_view.get(), "header-visible")
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.flags(glib::BindingFlags::SYNC_CREATE | glib::BindingFlags::BIDIRECTIONAL)
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.build()
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.unwrap();
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obj.bind_property("fullscreened", &self.headerbar.get(), "visible")
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.flags(
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glib::BindingFlags::SYNC_CREATE
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| glib::BindingFlags::BIDIRECTIONAL
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| glib::BindingFlags::INVERT_BOOLEAN,
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)
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.build()
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.unwrap();
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}
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}
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impl WidgetImpl for IvWindow {}
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impl WindowImpl for IvWindow {}
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impl ApplicationWindowImpl for IvWindow {}
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impl hdy::ApplicationWindowImpl for IvWindow {}
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}
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glib::wrapper! {
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pub struct IvWindow(ObjectSubclass<imp::IvWindow>)
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@extends gtk::Widget, gtk::Window, gtk::ApplicationWindow, libhandy::ApplicationWindow,
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@implements gio::ActionMap, gio::ActionGroup;
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}
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impl IvWindow {
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pub fn new<A: IsA<gtk::Application>>(app: &A) -> Self {
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glib::Object::new(&[("application", app)]).expect("Failed to create IvWindow")
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}
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pub fn setup_actions(&self) {
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action!(
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self,
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"toggle-fullscreen",
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clone!(@weak self as win => move |_, _| {
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win.set_property_fullscreened(!win.get_property_fullscreened());
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})
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);
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action!(
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self,
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"open",
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clone!(@weak self as win => move |_, _| {
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win.pick_file();
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})
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);
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action!(
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self,
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"open-with",
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clone!(@weak self as win => move |_, _| {
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win.open_with();
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})
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);
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action!(
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self,
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"set-wallpaper",
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clone!(@weak self as win => move |_, _| {
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win.set_wallpaper();
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})
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);
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action!(
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self,
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"print",
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clone!(@weak self as win => move |_, _| {
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win.print();
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})
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);
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self.set_actions_enabled(false);
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}
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fn pick_file(&self) {
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let chooser = gtk::FileChooserNative::new(
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Some(&"Open Image".to_string()),
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Some(self),
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gtk::FileChooserAction::Open,
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None,
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None,
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);
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chooser.set_modal(true);
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chooser.set_transient_for(Some(self));
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let filter = gtk::FileFilter::new();
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filter
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.set_property("name", &String::from("Supported image files"))
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.unwrap();
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filter.add_mime_type("image/*");
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chooser.add_filter(&filter);
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chooser.connect_response(
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clone!(@weak self as win, @strong chooser => move |_, resp| {
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if resp == gtk::ResponseType::Accept {
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if let Some(file) = chooser.get_file() {
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win.set_image_from_file(&file);
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}
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}
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}),
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);
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chooser.show();
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}
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fn open_with(&self) {
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let imp = imp::IvWindow::from_instance(self);
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if let Some(uri) = imp.image_view.get().uri() {
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std::process::Command::new("xdg-open")
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.arg(uri)
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.output()
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.unwrap();
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} else {
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log::error!("No URI for current image.")
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}
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}
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fn set_wallpaper(&self) {
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let imp = imp::IvWindow::from_instance(self);
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if let Err(e) = imp.image_view.get().set_wallpaper() {
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log::error!("Failed to set wallpaper: {}", e);
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}
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}
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fn print(&self) {
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let imp = imp::IvWindow::from_instance(self);
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if let Err(e) = imp.image_view.get().print() {
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log::error!("Failed to print file: {}", e);
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}
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}
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pub fn set_image_from_file(&self, file: &gio::File) {
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let imp = imp::IvWindow::from_instance(self);
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imp.image_view.get().set_image_from_file(file);
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imp.stack.get().set_visible_child(&imp.image_view.get());
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log::debug!("Loading file: {}", file.get_uri().to_string());
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if let Some(name) = file.get_basename() {
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self.set_title(Some(
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name.file_name().expect("Missing name").to_str().unwrap(),
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));
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}
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self.set_actions_enabled(true);
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}
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pub fn set_actions_enabled(&self, enabled: bool) {
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// Here we need to downcast because lookup_action()` returns a plain
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// GAction, not a GSimpleAction.
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self.lookup_action("open-with")
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.unwrap()
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.downcast::<gio::SimpleAction>()
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.unwrap()
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.set_enabled(enabled);
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self.lookup_action("set-wallpaper")
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.unwrap()
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.downcast::<gio::SimpleAction>()
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.unwrap()
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.set_enabled(enabled);
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self.lookup_action("toggle-fullscreen")
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.unwrap()
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.downcast::<gio::SimpleAction>()
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.unwrap()
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.set_enabled(enabled);
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self.lookup_action("print")
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.unwrap()
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.downcast::<gio::SimpleAction>()
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.unwrap()
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.set_enabled(enabled);
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}
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}
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