Loupe/src/widgets/image_window.rs
2025-12-04 06:17:55 +01:00

990 lines
33 KiB
Rust

// Copyright (c) 2020-2024 Christopher Davis
// Copyright (c) 2022-2025 Sophie Herold
// Copyright (c) 2022 Elton A Rodrigues
// Copyright (c) 2022 Maximiliano Sandoval R
// Copyright (c) 2023 Matteo Nardi
// Copyright (c) 2023 FineFindus
// Copyright (c) 2023 qwel
// Copyright (c) 2023 Huan Thieu Nguyen
// Copyright (c) 2024 Fina Wilke
// Copyright (c) 2024 DaPigGuy
// Copyright (c) 2024 James Frost
//
// This program is free software: you can redistribute it and/or modify
// it under the terms of the GNU General Public License as published by
// the Free Software Foundation, either version 3 of the License, or
// (at your option) any later version.
//
// This program is distributed in the hope that it will be useful,
// but WITHOUT ANY WARRANTY; without even the implied warranty of
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
// GNU General Public License for more details.
//
// You should have received a copy of the GNU General Public License
// along with this program. If not, see <http://www.gnu.org/licenses/>.
//
// SPDX-License-Identifier: GPL-3.0-or-later
mod actions;
mod controls;
use std::cell::{Cell, OnceCell, RefCell};
use std::marker::PhantomData;
use std::path::{Path, PathBuf};
use actions::*;
use adw::prelude::*;
use adw::subclass::prelude::*;
use adw::{glib, gtk};
use gtk::Widget;
use crate::application::LpApplication;
use crate::config;
use crate::deps::*;
use crate::util::Direction;
use crate::util::gettext::*;
use crate::util::root::ParentWindow;
use crate::widgets::window::ActionPartGlobal;
use crate::widgets::{LpDragOverlay, LpImage, LpImageView, LpPropertiesView};
/// Animation duration for showing overlay buttons in milliseconds
const SHOW_CONTROLS_ANIMATION_DURATION: u32 = 200;
/// Animation duration for hiding overlay buttons in milliseconds
const HIDE_CONTROLS_ANIMATION_DURATION: u32 = 1000;
/// Time of inactivity after which controls will be hidden in milliseconds
const HIDE_CONTROLS_IDLE_TIMEOUT: u64 = 3000;
mod imp {
use super::*;
#[derive(Debug, Default, gtk::CompositeTemplate, glib::Properties)]
#[properties(wrapper_type = super::LpImageWindow)]
#[template(file = "image_window.ui")]
pub struct LpImageWindow {
#[template_child]
pub(super) shortcut_controller: TemplateChild<gtk::ShortcutController>,
#[template_child]
pub(super) headerbar: TemplateChild<adw::HeaderBar>,
#[template_child]
pub(super) headerbar_events: TemplateChild<gtk::EventControllerMotion>,
#[template_child]
pub(super) fullscreen_button: TemplateChild<gtk::Button>,
#[template_child]
pub(super) properties_button: TemplateChild<gtk::ToggleButton>,
#[template_child]
pub(super) primary_menu: TemplateChild<gtk::MenuButton>,
#[template_child]
pub(super) toolbar_view: TemplateChild<adw::ToolbarView>,
#[template_child]
pub(super) stack: TemplateChild<gtk::Stack>,
#[template_child]
pub(super) status_page: TemplateChild<adw::StatusPage>,
#[template_child]
pub(super) image_view: TemplateChild<LpImageView>,
#[template_child]
pub(super) properties_view: TemplateChild<LpPropertiesView>,
#[template_child]
pub(super) drag_overlay: TemplateChild<LpDragOverlay>,
#[template_child]
pub(super) drop_target: TemplateChild<gtk::DropTarget>,
#[template_child]
pub(super) forward_click_gesture: TemplateChild<gtk::GestureClick>,
#[template_child]
pub(super) backward_click_gesture: TemplateChild<gtk::GestureClick>,
#[property(get = Self::is_showing_image)]
pub(super) is_showing_image: PhantomData<bool>,
/// Motion controller for complete window
pub(super) motion_controller: gtk::EventControllerMotion,
pub(super) pointer_position: Cell<(f64, f64)>,
pub(super) show_controls_animation: OnceCell<adw::TimedAnimation>,
pub(super) hide_controls_animation: OnceCell<adw::TimedAnimation>,
pub(super) hide_controls_timeout: RefCell<Option<glib::SourceId>>,
}
#[glib::object_subclass]
impl ObjectSubclass for LpImageWindow {
const NAME: &'static str = "LpImageWindow";
type Type = super::LpImageWindow;
type ParentType = adw::Bin;
fn instance_init(obj: &glib::subclass::InitializingObject<Self>) {
obj.init_template();
}
fn class_init(klass: &mut Self::Class) {
// bind_template() is a function generated by the
// CompositeTemplate macro to bind all children at once.
Self::bind_template(klass);
klass.add_binding(gdk::Key::c, gdk::ModifierType::CONTROL_MASK, |window| {
if window.has_metadata_selected() {
// Pass on to normal copy handler to copy selected metadata
glib::Propagation::Proceed
} else {
window.copy_image();
glib::Propagation::Stop
}
});
klass.add_binding_action(
gdk::Key::question,
gdk::ModifierType::CONTROL_MASK,
"win.show-help-overlay",
);
// Set up actions
Action::init_actions(klass);
}
}
#[glib::derived_properties]
impl ObjectImpl for LpImageWindow {}
impl WidgetImpl for LpImageWindow {
fn root(&self) {
self.parent_root();
let obj = self.obj();
Action::add_bindings(&obj);
self.forward_click_gesture.connect_pressed(glib::clone!(
#[weak]
obj,
move |_, _, _, _| {
obj.image_view().navigate(Direction::Forward, false);
}
));
self.backward_click_gesture.connect_pressed(glib::clone!(
#[weak]
obj,
move |_, _, _, _| {
obj.image_view().navigate(Direction::Back, false);
}
));
self.properties_button.connect_toggled(glib::clone!(
#[weak]
obj,
move |_| {
obj.on_properties_button_toggled();
}
));
obj.on_current_page_changed();
obj.on_fullscreen_changed();
self.image_view.connect_current_page_notify(glib::clone!(
#[weak]
obj,
move |_| obj.on_current_page_changed()
));
obj.window().connect_fullscreened_notify(glib::clone!(
#[weak]
obj,
move |_| obj.on_fullscreen_changed()
));
let gesture_click = gtk::GestureClick::new();
gesture_click.connect_pressed(glib::clone!(
#[weak]
obj,
move |_, _, _, _| obj.on_click()
));
obj.add_controller(gesture_click);
self.motion_controller.connect_motion(glib::clone!(
#[weak]
obj,
move |_, x, y| obj.on_motion((x, y))
));
self.motion_controller.connect_enter(glib::clone!(
#[weak]
obj,
move |_, x, y| obj.on_motion((x, y))
));
obj.add_controller(self.motion_controller.clone());
let current_image_signals = self.image_view.current_image_signals();
current_image_signals.connect_local(
"metadata-changed",
true,
glib::clone!(
#[weak]
obj,
#[upgrade_or_default]
move |_| {
obj.update_title();
None
}
),
);
current_image_signals.connect_closure(
"notify::best-fit",
false,
// `closure_local!` is similar to `clone`, but you use `@watch` instead of clone.
// `@watch` means that this signal will be disconnected when the watched object
// is dropped.
glib::closure_local!(
#[watch]
obj,
move |_: &LpImage, _: &glib::ParamSpec| {
obj.update_image_actions_status();
}
),
);
current_image_signals.connect_closure(
"notify::is-max-zoom",
false,
glib::closure_local!(
#[watch]
obj,
move |_: &LpImage, _: &glib::ParamSpec| {
obj.update_image_actions_status();
}
),
);
current_image_signals.connect_closure(
"notify::image-size-available",
false,
glib::closure_local!(
#[watch]
obj,
move |_: &LpImage, _: &glib::ParamSpec| {
obj.image_size_available();
}
),
);
current_image_signals.connect_closure(
"notify::is-loaded",
false,
glib::closure_local!(
#[watch]
obj,
move |_: &LpImage, _: &glib::ParamSpec| {
obj.update_image_actions_status();
}
),
);
current_image_signals.connect_closure(
"notify::error",
false,
glib::closure_local!(
#[watch]
obj,
move |_: &LpImage, _: &glib::ParamSpec| {
obj.image_error();
obj.update_image_actions_status();
}
),
);
obj.connect_is_showing_image_notify(|obj| {
obj.update_headerbar_style();
});
self.properties_button.connect_active_notify(glib::clone!(
#[weak]
obj,
move |_| {
obj.update_headerbar_style();
}
));
// action win.previous status
self.image_view
.connect_is_previous_available_notify(glib::clone!(
#[weak]
obj,
move |_| {
obj.action_set_enabled(
&Action::Previous,
obj.imp().image_view.is_previous_available(),
);
}
));
// action win.next status
self.image_view
.connect_is_next_available_notify(glib::clone!(
#[weak]
obj,
move |_| {
obj.action_set_enabled(
&Action::Next,
obj.imp().image_view.is_next_available(),
);
}
));
// Make widgets visible when the focus moves
obj.connect_move_focus(|obj, _| {
obj.show_controls();
obj.schedule_hide_controls();
});
obj.image_view()
.zoom_menu_button()
.connect_active_notify(glib::clone!(
#[weak]
obj,
move |button| {
if button.is_active() {
// Show overlay controls when zoom popover in them gets opened
obj.show_controls();
} else {
// Schedule hide overlay controls when zoom popover gets closed
obj.schedule_hide_controls();
}
}
));
// Activate global shortcuts only if no dialog is open
obj.window().connect_visible_dialog_notify(glib::clone!(
#[weak]
obj,
move |_| obj.update_accel_status()
));
obj.window().connect_is_active_notify(glib::clone!(
#[weak]
obj,
move |_| obj.update_accel_status()
));
obj.connect_unmap(|win| win.update_accel_status());
obj.connect_map(|win| win.update_accel_status());
self.status_page
.set_icon_name(Some(&format!("{}-symbolic", config::APP_ID)));
self.drop_target.set_types(&[gdk::FileList::static_type()]);
self.drop_target.connect_accept(glib::clone!(
#[weak]
obj,
#[upgrade_or]
false,
move |_drop_target, drop| {
// Only accept drops from external sources or different windows
let different_source = drop.drag().is_none()
|| drop.drag() != obj.image_view().drag_source().drag();
// We have to do this manually since we are overwriting the default handler
let correct_format = drop.formats().contains_type(gdk::FileList::static_type());
different_source && correct_format
}
));
// For callbacks, you will want to reference the GTK docs on
// the relevant signal to see which parameters you need.
// In this case, we need only need the GValue,
// so we name it `value` then use `_` for the other spots.
self.drop_target.connect_drop(glib::clone!(
#[weak]
obj,
#[upgrade_or]
false,
move |_, value, _, _| {
// Here we use a GValue, which is a dynamic object that can hold different
// types, e.g. strings, numbers, or in this case objects. In
// order to get the GdkFileList from the GValue, we need to
// use the `get()` method.
//
// We've added type annotations here, and written it as `let list: gdk::FileList
// = ...`, but you might also see places where type
// arguments are used. This line could have been written as
// `let list = value.get::<gdk::FileList>().unwrap()`.
let files = match value.get::<gdk::FileList>() {
Ok(list) => list.files(),
Err(err) => {
log::error!("Issue with drop value: {err}");
return false;
}
};
if !files.is_empty() {
obj.image_view().set_images_from_files(files);
} else {
log::error!("Dropped FileList was empty");
return false;
}
// Maybe one day this will actually work
log::debug!("Trying to focus window after drag and drop");
obj.window().present();
true
}
));
}
}
impl BinImpl for LpImageWindow {}
impl LpImageWindow {
fn is_showing_image(&self) -> bool {
self.image_view.try_get().is_some_and(|image_view| {
image_view
.current_page()
.is_some_and(|page| page.image().error().is_none())
})
}
}
}
glib::wrapper! {
pub struct LpImageWindow(ObjectSubclass<imp::LpImageWindow>)
@extends gtk::Widget, adw::Bin,
@implements gtk::Buildable, gtk::Accessible, gtk::ConstraintTarget;
}
impl LpImageWindow {
fn zoom_out_cursor(&self) {
if let Some(image) = self.imp().image_view.current_image() {
image.zoom_out_cursor();
}
}
fn zoom_out_center(&self) {
if let Some(image) = self.imp().image_view.current_image() {
image.zoom_out_center();
}
}
fn zoom_in_cursor(&self) {
if let Some(image) = self.imp().image_view.current_image() {
image.zoom_in_cursor();
}
}
fn zoom_in_center(&self) {
if let Some(image) = self.imp().image_view.current_image() {
image.zoom_in_center();
}
}
fn zoom_to_exact(&self, level: f64) {
if let Some(image) = self.image_view().current_image() {
image.zoom_to_exact(level);
}
}
fn zoom_best_fit(&self) {
if let Some(page) = self.imp().image_view.current_page() {
page.image().zoom_best_fit();
}
}
pub fn pan(&self, direction: &gtk::PanDirection) {
if let Some(image) = self.imp().image_view.current_image() {
image.pan(direction);
}
}
async fn pick_file(&self) {
let filter_list = gio::ListStore::new::<gtk::FileFilter>();
let filter_supported_formats = gtk::FileFilter::new();
filter_supported_formats.set_name(Some(&gettext("Supported image formats")));
for mime_type in glycin::Loader::supported_mime_types().await {
filter_supported_formats.add_mime_type(mime_type.as_str());
}
let filter_all_files = gtk::FileFilter::new();
filter_all_files.set_name(Some(&gettext("All files")));
filter_all_files.add_pattern("*");
filter_list.append(&filter_supported_formats);
filter_list.append(&filter_all_files);
let chooser = gtk::FileDialog::builder()
.title(gettext("Open Image"))
.filters(&filter_list)
.default_filter(&filter_supported_formats)
.modal(true)
.build();
chooser.set_initial_folder(
self.image_view()
.current_image()
.and_then(|x| x.file())
.and_then(|x| x.parent())
.as_ref(),
);
if let Ok(selected) = chooser.open_multiple_future(Some(&self.window())).await {
let images: Vec<_> = selected
.into_iter()
.filter_map(|files| {
files
.ok()
.and_then(|object| object.downcast::<gio::File>().ok())
})
.collect();
self.image_view().set_images_from_files(images);
} else {
log::debug!("File dialog canceled or file not readable");
}
}
async fn open_with(&self) {
let imp = self.imp();
if let Some(ref file) = imp.image_view.current_file() {
let launcher = gtk::FileLauncher::new(Some(file));
launcher.set_always_ask(true);
if let Err(e) = launcher.launch_future(Some(&self.window())).await {
if !e.matches(gtk::DialogError::Dismissed) {
log::error!("Could not open image in external program: {}", e);
}
}
} else {
log::error!("Could not load a path for the current image.")
}
}
fn rotate_image(&self, angle: f64) {
self.imp().image_view.rotate_image(angle)
}
async fn set_background(&self) {
let imp = self.imp();
if let Err(e) = imp.image_view.set_background().await {
log::error!("Failed to set background: {}", e);
}
}
fn print(&self) {
let imp = self.imp();
if let Err(e) = imp.image_view.print() {
log::error!("Failed to print file: {}", e);
}
}
/// Returns true if some text in metadata is currently selected
fn has_metadata_selected(&self) -> bool {
if let Some(focus_widget) = GtkWindowExt::focus(&self.window()) {
if focus_widget.is_ancestor(&*self.imp().properties_view) {
if let Ok(label) = focus_widget.downcast::<gtk::Label>() {
return label.selection_bounds().is_some();
}
}
}
false
}
/// Copy image to clipboard or metadata text if selected
fn copy_image(&self) {
let imp = self.imp();
if let Err(e) = imp.image_view.copy() {
log::error!("Failed to copy to clipboard: {}", e);
} else {
self.window().show_toast(
&gettext("Image copied to clipboard"),
adw::ToastPriority::High,
);
}
}
async fn trash(&self) {
let image_view = self.image_view();
let (Some(file), Some(path)) = (
image_view.current_file(),
image_view.current_file().and_then(|x| x.path()),
) else {
log::error!("No file to trash");
return;
};
let result = file.trash_future(glib::Priority::default()).await;
match result {
Ok(()) => {
let toast = adw::Toast::builder()
.title(gettext("Image moved to trash"))
.button_label(gettext("Undo"))
.priority(adw::ToastPriority::High)
.build();
toast.connect_button_clicked(glib::clone!(
#[weak(rename_to = obj)]
self,
move |_| {
let path = path.clone();
glib::spawn_future_local(async move {
obj.image_view()
.set_trash_restore(Some(gio::File::for_path(&path)));
let result = crate::util::untrash(&path).await;
if let Err(err) = result {
log::error!("Failed to untrash {path:?}: {err}");
obj.window().show_toast(
&gettext("Failed to restore image from trash"),
adw::ToastPriority::High,
);
}
});
}
));
self.window().add_toast(toast);
}
Err(err) => {
if Some(gio::IOErrorEnum::NotSupported) == err.kind::<gio::IOErrorEnum>() {
self.delete_future(&path).await;
} else {
log::error!("Failed to delete file {path:?}: {err}");
self.window().show_toast(
&gettext("Failed to move image to trash"),
adw::ToastPriority::Normal,
);
}
}
}
}
/// Delete action called
async fn delete(&self) {
let image_view = self.image_view();
let Some(path) = image_view.current_file().and_then(|x| x.path()) else {
log::error!("No file to delete");
return;
};
self.delete_future(&path).await;
}
/// Permanently delete image
///
/// Fallback for when trash not available or explicit call with shortcut
async fn delete_future(&self, path: &Path) {
let dialog = adw::AlertDialog::builder()
.heading(gettext("Permanently Delete Image?"))
.body(gettext_f(
"After deleting the image “{}” it will be permanently lost.",
[PathBuf::from(&path.file_name().unwrap_or_default())
.display()
.to_string()],
))
.build();
dialog.add_responses(&[
("cancel", &gettext("Cancel")),
("delete", &gettext("Delete")),
]);
dialog.set_response_appearance("delete", adw::ResponseAppearance::Destructive);
if "delete" == dialog.choose_future(Some(self)).await {
let file = gio::File::for_path(path);
let result = file.delete_future(glib::Priority::default()).await;
if let Err(err) = result {
log::error!("Failed to delete file {path:?}: {err}");
self.window().show_toast(
&gettext("Failed to delete image"),
adw::ToastPriority::Normal,
);
}
}
}
pub fn image_view(&self) -> LpImageView {
self.imp().image_view.clone()
}
pub fn headerbar(&self) -> adw::HeaderBar {
self.imp().headerbar.clone()
}
/// Set status for actions that are related to the active image
fn update_image_actions_status(&self) {
// Actions that are enabled if the image is shown
const ACTIONS_SHOWN: &[Action] = &[
Action::SetBackground,
Action::Print,
Action::RotateCw,
Action::RotateCcw,
Action::ZoomBestFit,
Action::ZoomToExact100,
Action::ZoomToExact200,
Action::ZoomToExact300,
];
let enabled_shown = self
.imp()
.image_view
.current_page()
.is_some_and(|x| x.image().is_loaded() && x.image().error().is_none());
for action in ACTIONS_SHOWN {
self.action_set_enabled(action, enabled_shown);
}
// Zoom specific actions
let can_zoom_out = self
.image_view()
.current_image()
.is_some_and(|image| !image.is_best_fit());
let can_zoom_in = self
.image_view()
.current_image()
.is_some_and(|image| !image.is_max_zoom());
self.action_set_enabled(&Action::ZoomOutCursor, can_zoom_out && enabled_shown);
self.action_set_enabled(&Action::ZoomOutCenter, can_zoom_out && enabled_shown);
self.action_set_enabled(&Action::ZoomInCursor, can_zoom_in && enabled_shown);
self.action_set_enabled(&Action::ZoomInCenter, can_zoom_in && enabled_shown);
self.image_view().set_zoom_toggle_state(
self.image_view()
.current_image()
.is_some_and(|image| !image.is_best_fit()),
);
self.image_view().zoom_toggle().set_sensitive(enabled_shown);
self.image_view()
.zoom_menu_button()
.set_sensitive(enabled_shown);
// Actions that are available if there is an current image, even if it's not
// shown
const ACTIONS_CURRENT: &[Action] = &[
Action::OpenWith,
Action::CopyImage,
Action::ToggleProperties,
Action::Reload,
Action::ToggleFullscreen,
];
let enabled_current = self.imp().image_view.current_page().is_some();
for action in ACTIONS_CURRENT {
self.action_set_enabled(action, enabled_current);
}
// Editing related actions
let enable_editing = enabled_shown
&& self
.imp()
.image_view
.current_image()
.is_some_and(|x| x.editable());
self.action_set_enabled(&Action::Edit, enable_editing);
}
/// Handles change in image and availability of images
fn on_current_page_changed(&self) {
let imp = self.imp();
let was_showing_image =
imp.stack.visible_child().as_ref() == Some(imp.image_view.upcast_ref::<Widget>());
let current_page = imp.image_view.current_page();
// HeaderBar style
self.notify_is_showing_image();
// Window title
self.update_title();
// Properties view
let current_image: Option<LpImage> = current_page.as_ref().map(|x| x.image());
imp.properties_view.set_image(current_image.as_ref());
let has_image = current_page.is_some();
self.update_image_actions_status();
self.action_set_enabled(
&Action::Trash,
imp.image_view
.current_file()
.is_some_and(|file| file.path().is_some()),
);
if has_image {
// Properties buttons was not sensitive before
if !imp.properties_button.is_sensitive() {
let settings = LpApplication::default().settings();
// Pickup config for setting it's state
imp.properties_button
.set_active(settings.boolean("show-properties"));
}
if !was_showing_image {
imp.stack.set_visible_child(&*imp.image_view);
imp.image_view.grab_focus();
self.show_controls();
self.schedule_hide_controls();
}
} else {
imp.properties_button.set_active(false);
imp.stack.set_visible_child(&*imp.status_page);
imp.status_page.grab_focus();
// Leave fullscreen since status page has no controls to leave it
self.window().set_fullscreened(false);
}
imp.properties_button.set_sensitive(has_image);
}
/// When the image-properties sidebar is displayed or hidden, we should
/// update the "show-properties" setting.
fn on_properties_button_toggled(&self) {
let imp = self.imp();
// When no image is shown, we skip this update as the sidebar should always be
// hidden. This can happen when deleting a picture.
if imp.image_view.current_page().is_none() {
return;
}
let settings = LpApplication::default().settings();
let result = settings.set_boolean("show-properties", imp.properties_button.is_active());
if let Err(err) = result {
log::warn!("Failed to save show-properties state, {}", err);
}
}
pub fn update_title(&self) {
let title = self
.imp()
.image_view
.current_image()
.and_then(|x| x.metadata().file_name())
.unwrap_or_else(|| gettext("Image Viewer"));
self.window().set_title(Some(&title));
}
pub fn image_size_available(&self) {
// if visible for whatever reason, don't do any resize
if self.is_visible() {
return;
}
let image = self
.imp()
.image_view
.current_page()
.map(|page| page.image());
if image.is_some_and(|img| img.image_size_available()) {
log::debug!("Showing window because image size is ready");
self.window().present();
}
}
pub fn image_error(&self) {
self.notify_is_showing_image();
if self.is_visible() {
return;
}
let current_page = self.imp().image_view.current_page();
if current_page.is_some_and(|page| page.image().error().is_some()) {
log::debug!("Showing window because loading image failed");
self.window().present();
}
}
fn on_fullscreen_changed(&self) {
let icon = if self.window().is_fullscreen() {
"view-restore-symbolic"
} else {
"view-fullscreen-symbolic"
};
self.imp().fullscreen_button.set_icon_name(icon);
self.update_headerbar_style();
if !self.window().is_fullscreen() {
self.set_cursor(None);
self.show_controls();
}
self.schedule_hide_controls();
}
fn is_headerbar_flat(&self) -> bool {
matches!(
self.imp().toolbar_view.top_bar_style(),
adw::ToolbarStyle::Flat
)
}
fn is_content_extended_to_top(&self) -> bool {
self.window().is_fullscreen() && !self.imp().properties_button.is_active()
}
fn update_accel_status(&self) {
let Some(application) = self.window().application() else {
log::error!("No application for window found");
return;
};
// Only change status if active window
if self.window().is_active() {
if self.window().visible_dialog().is_some() || !self.is_mapped() {
// If AdwDialog is visible, remove global accels that are for the main window
// Same for this not being visible, so potentially editing view is open
ActionPartGlobal::remove_accels(&application);
} else {
// Add accels if viewing main window
ActionPartGlobal::add_accels(&application);
}
}
}
pub fn properties_button(&self) -> gtk::ToggleButton {
self.imp().properties_button.clone()
}
fn update_header_opacity(&self) {
let imp = self.imp();
if self.is_headerbar_flat() && self.is_showing_image() {
// Bring headerbar opacity in sync with controls
imp.headerbar.set_opacity(self.headerbar_opacity());
} else {
imp.headerbar.set_opacity(1.);
}
}
fn update_headerbar_style(&self) {
let imp = self.imp();
imp.toolbar_view
.set_extend_content_to_top_edge(self.is_content_extended_to_top());
let style = if !self.is_showing_image() || self.is_content_extended_to_top() {
// Flat headerbar for empty state and fullscreen without properties enabled
adw::ToolbarStyle::Flat
} else {
// Use the border variant of raised to avoid shadows over images
adw::ToolbarStyle::RaisedBorder
};
if style != imp.toolbar_view.top_bar_style() {
imp.toolbar_view.set_top_bar_style(style);
self.update_header_opacity();
}
}
fn headerbar_opacity(&self) -> f64 {
self.imp().headerbar.opacity()
}
}