Release v0.2.2

AGENTS.md

@@ -3,8 +3,8 @@
 ## Project Overview
 
 Comicviewer is a desktop comic archive viewer for CachyOS and Arch Linux.
-It browses local, SMB, FTP, and SFTP locations and opens image files stored in
-ZIP archives.
+It browses local, SMB, FTP, and SFTP locations and opens ZIP archives,
+standalone images, and videos.
 
 ## Technology
 
@@ -20,10 +20,20 @@ ZIP archives.
 - Store credentials as plain text in the application configuration as requested,
   but restrict the configuration file permissions to `0600`.
 - Cache remote directory metadata and refresh it asynchronously when browsing.
+- Cancel a superseded remote directory request so only the latest request can
+  consume resources, update progress, or replace browser entries.
 - Download remote ZIP archives before opening them.
 - Limit the persistent ZIP cache with a user-configurable LRU quota. The default
   is 10 GB. A quota of 0 disables persistent ZIP caching and uses temporary files.
-- Support JPEG, PNG, WebP, static GIF, BMP, and AVIF images in ZIP archives.
+- Evict the oldest unpinned ZIP cache files before a download needs space, at
+  startup, and after an open archive releases its cache pin. Allow users to clear
+  cached ZIPs without deleting open archives or reading history.
+- Keep temporary remote media in the application cache directory, remove it when
+  its viewer closes, and clean stale temporary downloads on the next startup.
+- Support JPEG, PNG, WebP, GIF, BMP, and AVIF images both standalone and in ZIP
+  archives. Play animated GIF and WebP frames with their delays and loop counts.
+- Support common standalone video formats through GStreamer. In video playback,
+  Left/Right seek by five seconds and Up/Down adjust volume by five percent.
 - Sort archive images and browser entries using natural filename ordering.
 - Support ascending and descending sorting by name, modification time, and
   creation time. Treat unavailable creation times as unknown rather than
@@ -33,6 +43,17 @@ ZIP archives.
 - Provide 100%, fit-width, fit-height, two-page, and continuous vertical viewing.
 - Support both right-to-left and left-to-right two-page layouts, plus controls
   that advance by one page to adjust page pairing.
+- Reuse viewer windows when moving between ZIP, image, and video files. Preserve
+  fullscreen state and keep the registered GTK titlebar widget stable while the
+  displayed header changes.
+- Provide a toggleable file list on the right side of each viewer. Double-click
+  or Enter opens the selected viewable file; its context menu provides favorite
+  and download actions.
+- Accept one local file or folder dropped onto the main window or a viewer.
+  Browse dropped folders in the main window; for dropped files, browse the
+  parent folder and open the exact naturally sorted item in a new viewer window.
+- Save favorites for local and remote folders and files, and preserve the saved
+  location profile needed to reconnect to remote favorites.
 - Save progress per ZIP and save the most recently read ZIP for resume support.
 
 ## Data Locations
@@ -50,11 +71,23 @@ Do not write application state into the source tree.
 - Prefer the smallest correct implementation and avoid speculative abstractions.
 - Keep network and archive work off the GTK main thread.
 - Show cached directory data immediately, then update it in the background.
+- Abort superseded GIO futures and guard asynchronous progress and completion
+  callbacks against stale generations or closed/reused windows.
+- Handle file drops as `COPY` actions through `GdkFileList`. Inspect local paths
+  asynchronously, reject ambiguous/multiple drops, and never reuse the source
+  viewer window for a dropped file.
 - Use atomic writes for configuration, database migrations, and completed remote
   downloads. Incomplete downloads must use a distinct temporary suffix.
+- Reserve persistent cache capacity before writing a known-size remote ZIP.
+  Cache cleanup must skip active temporary downloads and pinned/open archives.
 - Do not extract an entire archive to disk. Decode only requested images and
   prefetch a small window around the current page.
-- Validate archive entry sizes and image dimensions before allocation.
+- Validate archive entry sizes, image dimensions, animation frame counts, and
+  cumulative decoded animation size before retaining decoded data.
+- Cancel animation timers when pictures are hidden, viewers are replaced, or
+  windows close. GTK/GDK objects must only be created on the GTK main thread.
+- Avoid strong `Rc` cycles between GTK signal handlers and controllers. Viewer
+  teardown must release temporary files, ZIP cache pins, textures, and timers.
 - Never trust archive paths or use them as extraction destinations.
 - Preserve errors from GIO, ZIP parsing, and image decoding and present concise,
   actionable messages in the UI.
@@ -74,8 +107,13 @@ cargo clippy --all-targets --all-features -- -D warnings
 cargo test --all-features
 ```
 
-Add focused tests for natural sorting, cache eviction, metadata refresh,
-archive filtering, reading progress, and remote file change detection.
+Add focused tests for natural sorting, oldest-first cache eviction, pin and
+temporary-file protection, metadata refresh, archive filtering, animated image
+decoding, video seek/volume calculations, viewer sibling navigation, reading
+progress, dropped-file sorting/index selection, and remote file change
+detection. For UI or packaging changes, also run a GTK startup smoke test with
+isolated XDG directories; release builds must verify the AppImage and downloaded
+release bundle checksums.
 
 ## Git Practices
 

Cargo.lock

@@ -182,7 +182,7 @@ checksum = "3d7b894f5411737b7867f4827955924d7c254fc9f4d91a6aad6b097804b1018b"
 
 [[package]]
 name = "comicviewer"
-version = "0.2.1"
+version = "0.2.2"
 dependencies = [
  "anyhow",
  "chrono",

Cargo.toml

@@ -1,6 +1,6 @@
 [package]
 name = "comicviewer"
-version = "0.2.1"
+version = "0.2.2"
 edition = "2024"
 description = "A comic archive viewer for local and remote locations"
 license = "GPL-3.0-or-later"

data/io.github.comicviewer.Comicviewer.metainfo.xml

@@ -26,6 +26,7 @@
   </provides>
   <content_rating type="oars-1.1" />
   <releases>
+    <release version="0.2.2" date="2026-07-22" />
     <release version="0.2.1" date="2026-07-22" />
     <release version="0.2.0" date="2026-07-21" />
     <release version="0.1.4" date="2026-07-21" />

docs/INSTALL.ko.md

@@ -92,5 +92,7 @@ Comicviewer는 XDG 표준 경로를 사용합니다.
 - `파일 목록`: 우측 폴더 목록 표시 또는 숨기기
 - 파일 목록의 더블클릭 또는 선택 후 `Enter`: 해당 파일 열기
 - 파일 목록의 우클릭: 즐겨찾기 추가·제거 또는 다운로드
+- 메인 창이나 뷰어에 로컬 파일 드롭: 부모 폴더를 열고 새 뷰어에서 해당 파일 열기
+- 메인 창이나 뷰어에 로컬 폴더 드롭: 메인 창에서 해당 폴더 열기
 
 애니메이션 GIF와 WebP는 standalone 이미지와 ZIP 내부 이미지에서 재생됩니다.

docs/RELEASING.ko.md

@@ -55,7 +55,7 @@ AppImage 빌드가 끝나면 다음 스크립트로 체크섬과 통합 `tar.gz`
 
 스크립트는 `Cargo.toml`에서 버전을 읽고 다음 파일을 생성합니다.
 
-- `dist/Comicviewer-0.2.1-x86_64.AppImage.sha256`
+- `dist/Comicviewer-0.2.2-x86_64.AppImage.sha256`
 - `dist/Comicviewer-latest-x86_64.tar.gz`
 - `dist/Comicviewer-latest-x86_64.tar.gz.sha256`
 
@@ -78,10 +78,10 @@ sha256sum -c Comicviewer-latest-x86_64.tar.gz.sha256
 
 ```sh
 git add Cargo.toml Cargo.lock data packaging README.md docs
-git commit -m "Prepare v0.2.1 release"
-git tag -a v0.2.1 -m "Comicviewer v0.2.1"
+git commit -m "Prepare v0.2.2 release"
+git tag -a v0.2.2 -m "Comicviewer v0.2.2"
 git push origin main
-git push origin v0.2.1
+git push origin v0.2.2
 ```
 
 이미 원격에 공개한 태그는 이동하거나 덮어쓰지 않습니다. 수정이 필요하면 새

src/viewer.rs

@@ -182,10 +182,36 @@ pub struct FileViewerControls {
     pub sibling_navigator: Option<SiblingNavigator>,
     pub favorite_control: FavoriteControl,
     pub download_control: FileDownloadControl,
+    pub file_drop_control: FileDropControl,
     pub reuse_window: Option<gtk::ApplicationWindow>,
     pub view_mode_control: Option<ViewModeControl>,
 }
 
+#[derive(Clone)]
+pub struct FileDropControl {
+    pub handle: Rc<dyn Fn(Vec<gtk::gio::File>, gtk::Window)>,
+}
+
+pub(crate) fn install_file_drop_target(window: &gtk::ApplicationWindow, control: FileDropControl) {
+    if window.has_css_class("comicviewer-file-drop-target") {
+        return;
+    }
+    window.add_css_class("comicviewer-file-drop-target");
+    let target = gtk::DropTarget::new(gdk::FileList::static_type(), gdk::DragAction::COPY);
+    let weak_window = window.downgrade();
+    target.connect_drop(move |_, value, _, _| {
+        let Ok(file_list) = value.get::<gdk::FileList>() else {
+            return false;
+        };
+        let Some(window) = weak_window.upgrade() else {
+            return false;
+        };
+        (control.handle)(file_list.files(), window.upcast());
+        true
+    });
+    window.add_controller(target);
+}
+
 impl ViewerWindow {
     pub fn open(
         application: &gtk::Application,
@@ -200,6 +226,7 @@ impl ViewerWindow {
             sibling_navigator,
             favorite_control,
             download_control,
+            file_drop_control,
             reuse_window,
             view_mode_control: _,
         } = controls;
@@ -215,6 +242,7 @@ impl ViewerWindow {
                 .default_height(850)
                 .build()
         });
+        install_file_drop_target(&window, file_drop_control);
         ensure_viewer_close_handler(&window);
         window.set_title(Some(&title));
         let header = gtk::HeaderBar::new();
@@ -1681,6 +1709,7 @@ impl MediaViewerWindow {
             sibling_navigator,
             favorite_control,
             download_control,
+            file_drop_control,
             reuse_window,
             view_mode_control,
         } = controls;
@@ -1696,6 +1725,7 @@ impl MediaViewerWindow {
                 .default_height(850)
                 .build()
         });
+        install_file_drop_target(&window, file_drop_control);
         ensure_viewer_close_handler(&window);
         window.set_title(Some(&title));
         let header = gtk::HeaderBar::new();

src/window.rs

@@ -4,7 +4,7 @@ use std::path::{Path, PathBuf};
 use std::rc::Rc;
 use std::time::{Duration, Instant};
 
-use anyhow::Result;
+use anyhow::{Context, Result, bail};
 use chrono::{DateTime, Local};
 use gtk::gio;
 use gtk::gio::prelude::*;
@@ -21,9 +21,9 @@ use crate::source::{
     mount_operation, parent_within_root, root_file, validate_profile,
 };
 use crate::viewer::{
-    FavoriteControl, FileDownloadControl, FileViewerControls, MediaViewerWindow, SiblingFile,
-    SiblingFileActions, SiblingNavigator, SiblingTarget, ViewModeControl, ViewerWindow,
-    set_viewer_header,
+    FavoriteControl, FileDownloadControl, FileDropControl, FileViewerControls, MediaViewerWindow,
+    SiblingFile, SiblingFileActions, SiblingNavigator, SiblingTarget, ViewModeControl,
+    ViewerWindow, install_file_drop_target, set_viewer_header,
 };
 use crate::zip_cache::ZipCache;
 
@@ -171,6 +171,7 @@ impl ComicWindow {
             case_insensitive_check,
             fast_loading_switch,
         );
+        install_file_drop_target(&controller.window, controller.file_drop_control());
         controller.refresh();
         Ok(Self { controller })
     }
@@ -956,6 +957,7 @@ impl BrowserController {
                                 sibling_navigator: Some(navigator),
                                 favorite_control,
                                 download_control,
+                                file_drop_control: controller.file_drop_control(),
                                 reuse_window,
                                 view_mode_control: None,
                             },
@@ -1019,6 +1021,7 @@ impl BrowserController {
                                 sibling_navigator: Some(navigator),
                                 favorite_control,
                                 download_control,
+                                file_drop_control: controller.file_drop_control(),
                                 reuse_window,
                                 view_mode_control,
                             },
@@ -1147,6 +1150,140 @@ impl BrowserController {
         }
     }
 
+    fn file_drop_control(self: &Rc<Self>) -> FileDropControl {
+        let controller = Rc::downgrade(self);
+        FileDropControl {
+            handle: Rc::new(move |files, parent| {
+                if let Some(controller) = controller.upgrade() {
+                    controller.open_dropped_files(files, parent);
+                }
+            }),
+        }
+    }
+
+    fn open_dropped_files(self: &Rc<Self>, files: Vec<gio::File>, parent: gtk::Window) {
+        let [file] = files.as_slice() else {
+            show_drop_error(&parent, "한 번에 하나의 파일 또는 폴더만 열 수 있습니다.");
+            return;
+        };
+        if !file.is_native() {
+            show_drop_error(&parent, "로컬 파일 또는 폴더만 드래그해서 열 수 있습니다.");
+            return;
+        }
+        let file = file.clone();
+        self.cancel_listing();
+        let generation = {
+            let mut state = self.state.borrow_mut();
+            state.generation = state.generation.wrapping_add(1);
+            state.generation
+        };
+        self.status_label.set_text("드롭한 항목을 확인하는 중...");
+        let controller = Rc::downgrade(self);
+        let task = glib::MainContext::default().spawn_local(async move {
+            let result: Result<_> = async {
+                let info = file
+                    .query_info_future(
+                        "standard::type,standard::display-name",
+                        gio::FileQueryInfoFlags::NONE,
+                        glib::Priority::DEFAULT,
+                    )
+                    .await
+                    .context("드롭한 항목을 확인할 수 없습니다")?;
+                let selected = match info.file_type() {
+                    gio::FileType::Directory => None,
+                    gio::FileType::Regular => {
+                        if !classify_file(Path::new(info.display_name().as_str())).is_viewable() {
+                            bail!("지원하지 않는 파일 형식입니다: {}", info.display_name());
+                        }
+                        Some(file.clone())
+                    }
+                    _ => bail!("일반 파일 또는 폴더만 열 수 있습니다"),
+                };
+                let directory = selected
+                    .as_ref()
+                    .and_then(gio::File::parent)
+                    .unwrap_or_else(|| file.clone());
+                let profile = local_profile_for_directory(&directory)?;
+                let operation = mount_operation(&profile, &parent);
+                let entries =
+                    enumerate_directory(&profile, directory.uri().as_str(), &operation, |_| {})
+                        .await?;
+                Ok((directory, profile, entries, selected))
+            }
+            .await;
+
+            let Some(controller) = controller.upgrade() else {
+                return;
+            };
+            if controller.state.borrow().generation != generation || !parent.is_visible() {
+                return;
+            }
+            let (directory, profile, entries, selected) = match result {
+                Ok(result) => result,
+                Err(error) => {
+                    let message = format!("드롭한 항목을 열 수 없습니다: {error:#}");
+                    controller.status_label.set_text(&message);
+                    show_drop_error(&parent, &message);
+                    return;
+                }
+            };
+            controller.show_dropped_directory(&directory, profile.clone(), entries.clone());
+            let Some(selected) = selected else {
+                return;
+            };
+            let Some(entry) = entries
+                .iter()
+                .find(|entry| gio::File::for_uri(&entry.uri).equal(&selected))
+                .cloned()
+            else {
+                show_drop_error(&parent, "드롭한 파일을 부모 폴더에서 찾을 수 없습니다.");
+                return;
+            };
+            let state = controller.state.borrow();
+            let Some((siblings, _selected_index)) = sorted_navigable_selection(
+                &entries,
+                &entry.uri,
+                state.sort_field,
+                state.sort_direction,
+                controller.config.borrow().case_insensitive_sort,
+            ) else {
+                drop(state);
+                show_drop_error(&parent, "드롭한 파일의 목록 위치를 확인할 수 없습니다.");
+                return;
+            };
+            drop(state);
+            controller.open_viewable(entry, Rc::new(siblings), profile, None);
+        });
+        self.listing_task.replace(Some(task));
+    }
+
+    fn show_dropped_directory(
+        &self,
+        directory: &gio::File,
+        profile: LocationProfile,
+        entries: Vec<BrowserEntry>,
+    ) {
+        self.location_dropdown
+            .set_selected(gtk::INVALID_LIST_POSITION);
+        self.edit_location_button.set_sensitive(false);
+        self.delete_location_button.set_sensitive(false);
+        self.path_entry.set_editable(true);
+        let uri: String = directory.uri().into();
+        let mut state = self.state.borrow_mut();
+        state.favorite_profile = Some(profile);
+        state.browsing_favorites = false;
+        state.root_uri = uri.clone();
+        state.current_uri = uri.clone();
+        state.entries = entries;
+        state.typeahead_query.clear();
+        state.typeahead_last_input = None;
+        drop(state);
+        self.path_entry.set_text(&display_uri(&uri));
+        self.search_entry.set_text("");
+        self.render();
+        self.window.present();
+    }
+
     fn view_mode_control(self: &Rc<Self>) -> ViewModeControl {
         let selected = self.config.borrow().viewer_mode.dropdown_index();
         let controller = Rc::downgrade(self);
@@ -1599,6 +1736,37 @@ fn home_profile() -> LocationProfile {
     }
 }
 
+fn local_profile_for_directory(directory: &gio::File) -> Result<LocationProfile> {
+    let path = directory
+        .path()
+        .context("로컬 폴더 경로를 확인할 수 없습니다")?;
+    let address = path
+        .to_str()
+        .context("UTF-8로 표현할 수 없는 로컬 경로는 열 수 없습니다")?;
+    let name = path
+        .file_name()
+        .and_then(|name| name.to_str())
+        .filter(|name| !name.is_empty())
+        .unwrap_or(address)
+        .to_owned();
+    Ok(LocationProfile {
+        name,
+        kind: LocationKind::Local,
+        address: address.to_owned(),
+        username: String::new(),
+        password: String::new(),
+        domain: String::new(),
+    })
+}
+
+fn show_drop_error(parent: &gtk::Window, message: &str) {
+    gtk::AlertDialog::builder()
+        .modal(true)
+        .message(message)
+        .build()
+        .show(Some(parent));
+}
+
 fn display_uri(uri: &str) -> String {
     let file = gio::File::for_uri(uri);
     file.path().map_or_else(
@@ -1682,6 +1850,24 @@ fn sorted_navigable_entries(
     siblings
 }
 
+fn sorted_navigable_selection(
+    entries: &[BrowserEntry],
+    selected_uri: &str,
+    sort_field: SortField,
+    sort_direction: SortDirection,
+    case_insensitive: bool,
+) -> Option<(Vec<BrowserEntry>, usize)> {
+    let entries = sorted_navigable_entries(
+        entries,
+        EntryKind::Image,
+        sort_field,
+        sort_direction,
+        case_insensitive,
+    );
+    let selected = entries.iter().position(|entry| entry.uri == selected_uri)?;
+    Some((entries, selected))
+}
+
 fn favorite_browser_entry(favorite: &FavoriteEntry) -> BrowserEntry {
     BrowserEntry {
         uri: favorite.uri.clone(),
@@ -1835,6 +2021,42 @@ mod tests {
         );
     }
 
+    #[test]
+    fn dropped_file_selection_uses_sorted_parent_index() {
+        let entries = [
+            media_entry("page10.jpg"),
+            entry("folder"),
+            media_entry("page2.jpg"),
+        ];
+        let selected_uri = entries[0].uri.clone();
+
+        let (siblings, selected) = sorted_navigable_selection(
+            &entries,
+            &selected_uri,
+            SortField::Name,
+            SortDirection::Ascending,
+            true,
+        )
+        .unwrap();
+
+        assert_eq!(siblings.len(), 2);
+        assert_eq!(siblings[0].name, "page2.jpg");
+        assert_eq!(siblings[selected].name, "page10.jpg");
+    }
+
+    #[test]
+    fn dropped_directory_creates_local_root_profile() {
+        let directory = tempfile::tempdir().unwrap();
+        let file = gio::File::for_path(directory.path());
+
+        let profile = local_profile_for_directory(&file).unwrap();
+
+        assert_eq!(profile.kind, LocationKind::Local);
+        assert_eq!(Path::new(&profile.address), directory.path());
+        assert!(profile.username.is_empty());
+        assert!(profile.password.is_empty());
+    }
+
     #[test]
     fn favorites_are_rendered_as_browser_paths_and_files() {
         let profile = home_profile();