Improve Images, Compress, Output, Workflow steps

- Images step: folder drag-and-drop with recursive image scanning, per-file
  list with format and size info, total file size in header, supported
  formats label in empty state
- Compress step: per-format quality controls moved into AdwExpanderRow,
  improved quality level descriptions
- Output step: dynamic image count with total size from loaded_files,
  initial overwrite behavior from config
- Workflow step: properly handle MetadataConfig::Custom in preset import,
  mapping all custom metadata fields to JobConfig

pixstrip-gtk/src/steps/step_compress.rs

@@ -33,7 +33,7 @@ pub fn build_compress_page(state: &AppState) -> adw::NavigationPage {
     // Quality slider
     let quality_group = adw::PreferencesGroup::builder()
         .title("Quality Level")
-        .description("Higher quality means larger files")
+        .description("Higher quality means larger files. This sets the overall quality target.")
         .build();
 
     let initial_val = match cfg.quality_preset {
@@ -78,10 +78,14 @@ pub fn build_compress_page(state: &AppState) -> adw::NavigationPage {
     quality_group.add(&quality_box);
     content.append(&quality_group);
 
-    // Advanced options
+    // Advanced options in expander
     let advanced_group = adw::PreferencesGroup::builder()
+        .title("Advanced Options")
+        .build();
+
+    let advanced_expander = adw::ExpanderRow::builder()
         .title("Per-Format Quality")
-        .description("Fine-tune quality for each format individually")
+        .subtitle("Fine-tune quality for each format individually")
         .build();
 
     let jpeg_row = adw::SpinRow::builder()
@@ -102,9 +106,11 @@ pub fn build_compress_page(state: &AppState) -> adw::NavigationPage {
         .adjustment(&gtk::Adjustment::new(cfg.webp_quality as f64, 1.0, 100.0, 1.0, 10.0, 0.0))
         .build();
 
-    advanced_group.add(&jpeg_row);
+    advanced_expander.add_row(&jpeg_row);
-    advanced_group.add(&png_row);
+    advanced_expander.add_row(&png_row);
-    advanced_group.add(&webp_row);
+    advanced_expander.add_row(&webp_row);
+
+    advanced_group.add(&advanced_expander);
     content.append(&advanced_group);
 
     drop(cfg);
@@ -118,7 +124,7 @@ pub fn build_compress_page(state: &AppState) -> adw::NavigationPage {
     }
     {
         let jc = state.job_config.clone();
-        let label = quality_label.clone();
+        let label = quality_label;
         quality_scale.connect_value_changed(move |scale| {
             let val = scale.value().round() as u32;
             let mut c = jc.borrow_mut();
@@ -167,10 +173,10 @@ pub fn build_compress_page(state: &AppState) -> adw::NavigationPage {
 
 fn quality_description(val: u32) -> String {
     match val {
-        1 => "Web Optimized - smallest files, noticeable quality loss".into(),
+        1 => "Web Optimized - smallest files, noticeable quality loss. Best for thumbnails.".into(),
-        2 => "Low - small files, some quality loss".into(),
+        2 => "Low - small files, some quality loss. Good for email attachments.".into(),
-        3 => "Medium - good balance of quality and size".into(),
+        3 => "Medium - good balance of quality and size. Recommended for most uses.".into(),
-        4 => "High - large files, minimal quality loss".into(),
+        4 => "High - large files, minimal quality loss. Good for printing.".into(),
-        _ => "Maximum - largest files, best possible quality".into(),
+        _ => "Maximum - largest files, best possible quality. Archival use.".into(),
     }
 }

pixstrip-gtk/src/steps/step_images.rs

@@ -10,7 +10,7 @@ pub fn build_images_page(state: &AppState) -> adw::NavigationPage {
     let empty_state = build_empty_state();
     stack.add_named(&empty_state, Some("empty"));
 
-    // Loaded state - thumbnail grid
+    // Loaded state - file list
     let loaded_state = build_loaded_state(state);
     stack.add_named(&loaded_state, Some("loaded"));
 
@@ -24,20 +24,28 @@ pub fn build_images_page(state: &AppState) -> adw::NavigationPage {
         let loaded_files = state.loaded_files.clone();
         let stack_ref = stack.clone();
         drop_target.connect_drop(move |_target, value, _x, _y| {
-            // Try single file
             if let Ok(file) = value.get::<gtk::gio::File>()
                 && let Some(path) = file.path()
-                && is_image_file(&path)
             {
+                if path.is_dir() {
+                    // Recursively add images from directory
+                    let mut files = loaded_files.borrow_mut();
+                    add_images_from_dir(&path, &mut files);
+                    let count = files.len();
+                    drop(files);
+                    update_loaded_ui(&stack_ref, &loaded_files, count);
+                    return true;
+                } else if is_image_file(&path) {
                     let mut files = loaded_files.borrow_mut();
                     if !files.contains(&path) {
                         files.push(path);
                     }
                     let count = files.len();
                     drop(files);
-                update_loaded_ui(&stack_ref, count);
+                    update_loaded_ui(&stack_ref, &loaded_files, count);
                     return true;
                 }
+            }
             false
         });
     }
@@ -58,29 +66,101 @@ fn is_image_file(path: &std::path::Path) -> bool {
     }
 }
 
-fn update_loaded_ui(stack: &gtk::Stack, count: usize) {
+fn add_images_from_dir(dir: &std::path::Path, files: &mut Vec<std::path::PathBuf>) {
-    if count > 0 {
+    if let Ok(entries) = std::fs::read_dir(dir) {
-        stack.set_visible_child_name("loaded");
+        for entry in entries.flatten() {
+            let path = entry.path();
+            if path.is_dir() {
+                add_images_from_dir(&path, files);
+            } else if is_image_file(&path) && !files.contains(&path) {
+                files.push(path);
+            }
         }
-    if let Some(loaded_box) = stack.child_by_name("loaded") {
-        update_count_label(&loaded_box, count);
     }
 }
 
-fn update_count_label(widget: &gtk::Widget, count: usize) {
+fn update_loaded_ui(
+    stack: &gtk::Stack,
+    loaded_files: &std::rc::Rc<std::cell::RefCell<Vec<std::path::PathBuf>>>,
+    count: usize,
+) {
+    if count > 0 {
+        stack.set_visible_child_name("loaded");
+    } else {
+        stack.set_visible_child_name("empty");
+    }
+    if let Some(loaded_widget) = stack.child_by_name("loaded") {
+        update_count_and_list(&loaded_widget, loaded_files);
+    }
+}
+
+fn update_count_and_list(
+    widget: &gtk::Widget,
+    loaded_files: &std::rc::Rc<std::cell::RefCell<Vec<std::path::PathBuf>>>,
+) {
+    let files = loaded_files.borrow();
+    let count = files.len();
+    let total_size: u64 = files.iter()
+        .filter_map(|p| std::fs::metadata(p).ok())
+        .map(|m| m.len())
+        .sum();
+    let size_str = format_size(total_size);
+
+    // Walk widget tree to find and update components
+    walk_loaded_widgets(widget, count, &size_str, &files);
+}
+
+fn walk_loaded_widgets(widget: &gtk::Widget, count: usize, size_str: &str, files: &[std::path::PathBuf]) {
     if let Some(label) = widget.downcast_ref::<gtk::Label>()
         && label.css_classes().iter().any(|c| c == "heading")
     {
-        label.set_label(&format!("{} images loaded", count));
+        label.set_label(&format!("{} images ({})", count, size_str));
-        return;
     }
-    if let Some(bx) = widget.downcast_ref::<gtk::Box>() {
+    if let Some(list_box) = widget.downcast_ref::<gtk::ListBox>()
-        let mut child = bx.first_child();
+        && list_box.css_classes().iter().any(|c| c == "boxed-list")
+    {
+        // Clear existing rows
+        while let Some(row) = list_box.first_child() {
+            list_box.remove(&row);
+        }
+        // Add rows for each file
+        for path in files {
+            let name = path.file_name()
+                .and_then(|n| n.to_str())
+                .unwrap_or("unknown");
+            let size = std::fs::metadata(path)
+                .map(|m| format_size(m.len()))
+                .unwrap_or_default();
+            let ext = path.extension()
+                .and_then(|e| e.to_str())
+                .unwrap_or("")
+                .to_uppercase();
+            let row = adw::ActionRow::builder()
+                .title(name)
+                .subtitle(format!("{} - {}", ext, size))
+                .build();
+            row.add_prefix(&gtk::Image::from_icon_name("image-x-generic-symbolic"));
+            list_box.append(&row);
+        }
+    }
+    // Recurse
+    let mut child = widget.first_child();
     while let Some(c) = child {
-            update_count_label(&c, count);
+        walk_loaded_widgets(&c, count, size_str, files);
         child = c.next_sibling();
     }
 }
+
+fn format_size(bytes: u64) -> String {
+    if bytes < 1024 {
+        format!("{} B", bytes)
+    } else if bytes < 1024 * 1024 {
+        format!("{:.1} KB", bytes as f64 / 1024.0)
+    } else if bytes < 1024 * 1024 * 1024 {
+        format!("{:.1} MB", bytes as f64 / (1024.0 * 1024.0))
+    } else {
+        format!("{:.1} GB", bytes as f64 / (1024.0 * 1024.0 * 1024.0))
+    }
 }
 
 fn build_empty_state() -> gtk::Box {
@@ -125,8 +205,17 @@ fn build_empty_state() -> gtk::Box {
         .build();
 
     let subtitle = gtk::Label::builder()
-        .label("or click Browse to select files")
+        .label("or click Browse to select files.\nYou can also drop folders.")
         .css_classes(["dim-label"])
+        .halign(gtk::Align::Center)
+        .justify(gtk::Justification::Center)
+        .build();
+
+    let formats_label = gtk::Label::builder()
+        .label("Supported: JPEG, PNG, WebP, AVIF, GIF, TIFF, BMP")
+        .css_classes(["dim-label", "caption"])
+        .halign(gtk::Align::Center)
+        .margin_top(8)
         .build();
 
     let browse_button = gtk::Button::builder()
@@ -141,6 +230,7 @@ fn build_empty_state() -> gtk::Box {
     inner.append(&icon);
     inner.append(&title);
     inner.append(&subtitle);
+    inner.append(&formats_label);
     inner.append(&browse_button);
     drop_zone.append(&inner);
 
@@ -165,7 +255,7 @@ fn build_loaded_state(state: &AppState) -> gtk::Box {
         .build();
 
     let count_label = gtk::Label::builder()
-        .label("0 images loaded")
+        .label("0 images")
         .hexpand(true)
         .halign(gtk::Align::Start)
         .css_classes(["heading"])
@@ -173,7 +263,7 @@ fn build_loaded_state(state: &AppState) -> gtk::Box {
 
     let add_button = gtk::Button::builder()
         .icon_name("list-add-symbolic")
-        .tooltip_text("Add more images")
+        .tooltip_text("Add more images (Ctrl+O)")
         .action_name("win.add-files")
         .build();
     add_button.add_css_class("flat");
@@ -190,8 +280,7 @@ fn build_loaded_state(state: &AppState) -> gtk::Box {
         let count_label_c = count_label.clone();
         clear_button.connect_clicked(move |btn| {
             files.borrow_mut().clear();
-            count_label_c.set_label("0 images loaded");
+            count_label_c.set_label("0 images");
-            // Navigate back to empty state by finding parent stack
             if let Some(parent) = btn.ancestor(gtk::Stack::static_type())
                 && let Some(stack) = parent.downcast_ref::<gtk::Stack>()
             {
@@ -206,7 +295,7 @@ fn build_loaded_state(state: &AppState) -> gtk::Box {
 
     let separator = gtk::Separator::new(gtk::Orientation::Horizontal);
 
-    // File list showing loaded images
+    // File list
     let list_scrolled = gtk::ScrolledWindow::builder()
         .hscrollbar_policy(gtk::PolicyType::Never)
         .vexpand(true)

pixstrip-gtk/src/steps/step_output.rs

@@ -22,13 +22,13 @@ pub fn build_output_page(state: &AppState) -> adw::NavigationPage {
         .description("Review your processing settings before starting")
         .build();
 
-    let summary_placeholder = adw::ActionRow::builder()
+    let summary_row = adw::ActionRow::builder()
         .title("No operations configured")
         .subtitle("Go back and configure your workflow settings")
         .build();
-    summary_placeholder.add_prefix(&gtk::Image::from_icon_name("dialog-information-symbolic"));
+    summary_row.add_prefix(&gtk::Image::from_icon_name("dialog-information-symbolic"));
 
-    summary_group.add(&summary_placeholder);
+    summary_group.add(&summary_row);
     content.append(&summary_group);
 
     // Output directory
@@ -54,10 +54,12 @@ pub fn build_output_page(state: &AppState) -> adw::NavigationPage {
     output_row.add_suffix(&choose_button);
     output_row.add_suffix(&gtk::Image::from_icon_name("go-next-symbolic"));
 
+    let cfg = state.job_config.borrow();
+
     let structure_row = adw::SwitchRow::builder()
         .title("Preserve Directory Structure")
         .subtitle("Keep subfolder hierarchy in output")
-        .active(false)
+        .active(cfg.preserve_dir_structure)
         .build();
 
     output_group.add(&output_row);
@@ -80,24 +82,33 @@ pub fn build_output_page(state: &AppState) -> adw::NavigationPage {
         "Skip existing files",
     ]);
     overwrite_row.set_model(Some(&overwrite_model));
+    overwrite_row.set_selected(cfg.overwrite_behavior as u32);
 
     overwrite_group.add(&overwrite_row);
     content.append(&overwrite_group);
 
-    // Image count
+    // Image count - dynamically updated
     let stats_group = adw::PreferencesGroup::builder()
         .title("Batch Info")
         .build();
 
+    let file_count = state.loaded_files.borrow().len();
+    let total_size: u64 = state.loaded_files.borrow().iter()
+        .filter_map(|p| std::fs::metadata(p).ok())
+        .map(|m| m.len())
+        .sum();
+
     let count_row = adw::ActionRow::builder()
         .title("Images to process")
-        .subtitle("0 images")
+        .subtitle(format!("{} images ({})", file_count, format_size(total_size)))
         .build();
     count_row.add_prefix(&gtk::Image::from_icon_name("image-x-generic-symbolic"));
 
     stats_group.add(&count_row);
     content.append(&stats_group);
 
+    drop(cfg);
+
     // Wire preserve directory structure
     {
         let jc = state.job_config.clone();
@@ -127,3 +138,15 @@ pub fn build_output_page(state: &AppState) -> adw::NavigationPage {
         .child(&clamp)
         .build()
 }
+
+fn format_size(bytes: u64) -> String {
+    if bytes < 1024 {
+        format!("{} B", bytes)
+    } else if bytes < 1024 * 1024 {
+        format!("{:.1} KB", bytes as f64 / 1024.0)
+    } else if bytes < 1024 * 1024 * 1024 {
+        format!("{:.1} MB", bytes as f64 / (1024.0 * 1024.0))
+    } else {
+        format!("{:.1} GB", bytes as f64 / (1024.0 * 1024.0 * 1024.0))
+    }
+}

pixstrip-gtk/src/steps/step_workflow.rs

@@ -213,9 +213,14 @@ fn apply_preset_to_config(cfg: &mut JobConfig, preset: &Preset) {
             cfg.metadata_enabled = true;
             cfg.metadata_mode = MetadataMode::KeepAll;
         }
-        Some(MetadataConfig::Custom { .. }) => {
+        Some(MetadataConfig::Custom { strip_gps, strip_camera, strip_software, strip_timestamps, strip_copyright }) => {
             cfg.metadata_enabled = true;
-            cfg.metadata_mode = MetadataMode::StripAll;
+            cfg.metadata_mode = MetadataMode::Custom;
+            cfg.strip_gps = *strip_gps;
+            cfg.strip_camera = *strip_camera;
+            cfg.strip_software = *strip_software;
+            cfg.strip_timestamps = *strip_timestamps;
+            cfg.strip_copyright = *strip_copyright;
         }
         None => {
             cfg.metadata_enabled = false;