feat(field): Formula, Hyperlink and plot fields; local-time field dates, file times and display name; header dates on save

Co-Authored-By: Claude Opus 5.5 <[email protected]>

Cargo.lock

@@ -4206,7 +4206,7 @@ dependencies = [
 [[package]]
 name = "opencadcodec"
 version = "0.5.5"
-source = "git+https://github.com/ramox81/cadcodec.git?rev=595800e#595800ed4b778827c3c9e48245cade9cd8ccc05a"
+source = "git+https://github.com/ramox81/cadcodec.git?rev=6d3713d#6d3713df1fe0a4aeeb9ef308a376e3db49c727c3"
 dependencies = [
  "ahash 0.8.12",
  "anyhow",

Cargo.toml

@@ -74,7 +74,7 @@ naga = { version = "27", features = ["wgsl-in"] }
 
 [target.'cfg(target_os = "windows")'.dependencies]
 libloading = "0.8"
-windows-sys = { version = "0.61", features = ["Win32_UI_Shell", "Win32_UI_WindowsAndMessaging", "Win32_UI_Input", "Win32_System_LibraryLoader", "Win32_System_Threading", "Win32_Security", "Win32_System_Com", "Win32_System_Registry", "Win32_Storage_FileSystem", "Win32_Foundation", "Win32_Graphics_Printing", "Win32_Graphics_Gdi", "Win32_Storage_Xps", "Win32_Globalization"] }
+windows-sys = { version = "0.61", features = ["Win32_UI_Shell", "Win32_UI_WindowsAndMessaging", "Win32_UI_Input", "Win32_System_LibraryLoader", "Win32_System_Threading", "Win32_Security", "Win32_System_Com", "Win32_System_Registry", "Win32_Storage_FileSystem", "Win32_Foundation", "Win32_Graphics_Printing", "Win32_Graphics_Gdi", "Win32_Storage_Xps", "Win32_Globalization", "Win32_Security_Authentication_Identity"] }
 
 [target.'cfg(target_os = "linux")'.dependencies]
 ashpd = { version = "0.13.13", default-features = false, features = ["async-io", "wayland"] }
@@ -92,7 +92,7 @@ objc2-foundation = { version = "0.2", features = ["NSArray", "NSURL", "NSString"
 
 # Field authoring API and field format codes (opencadcodec PR pending).
 [patch."https://github.com/HakanSeven12/opencadcodec.git"]
-opencadcodec = { git = "https://github.com/ramox81/cadcodec.git", rev = "595800e" }
+opencadcodec = { git = "https://github.com/ramox81/cadcodec.git", rev = "6d3713d" }
 
 [patch.crates-io]
 iced_core = { git = "https://github.com/iced-rs/iced.git", rev = "23604ff22ab0aad9e00b9327cb7b8546ed84db39" }

locales/ar-SA/opencadstudio.ftl

@@ -4105,6 +4105,14 @@ insert =
     .field-select-object = Select object
     .field-expression = Field expression
     .field-help = Inserts a field: text that updates from the drawing, the date or another source.
+    .field-cat-linked = Linked
+    .field-current-precision = Current precision
+    .field-evaluate = Evaluate
+    .field-text-to-display = Text to display
+    .field-address = Address
+    .field-select-link-file = Select a file to link
+    .field-current-units = Current units
+    .field-use-scale-name = Use scale name
     .field-cat-date = Date & Time
     .field-cat-document = Document
     .field-cat-other = Other

locales/bg-BG/opencadstudio.ftl

@@ -4092,6 +4092,14 @@ insert =
     .field-select-object = Select object
     .field-expression = Field expression
     .field-help = Inserts a field: text that updates from the drawing, the date or another source.
+    .field-cat-linked = Linked
+    .field-current-precision = Current precision
+    .field-evaluate = Evaluate
+    .field-text-to-display = Text to display
+    .field-address = Address
+    .field-select-link-file = Select a file to link
+    .field-current-units = Current units
+    .field-use-scale-name = Use scale name
     .field-cat-date = Date & Time
     .field-cat-document = Document
     .field-cat-other = Other

locales/cs-CZ/opencadstudio.ftl

@@ -4090,6 +4090,14 @@ insert =
     .field-select-object = Select object
     .field-expression = Field expression
     .field-help = Inserts a field: text that updates from the drawing, the date or another source.
+    .field-cat-linked = Linked
+    .field-current-precision = Current precision
+    .field-evaluate = Evaluate
+    .field-text-to-display = Text to display
+    .field-address = Address
+    .field-select-link-file = Select a file to link
+    .field-current-units = Current units
+    .field-use-scale-name = Use scale name
     .field-cat-date = Date & Time
     .field-cat-document = Document
     .field-cat-other = Other

locales/de-DE/opencadstudio.ftl

@@ -4091,6 +4091,14 @@ insert =
     .field-select-object = Select object
     .field-expression = Field expression
     .field-help = Inserts a field: text that updates from the drawing, the date or another source.
+    .field-cat-linked = Linked
+    .field-current-precision = Current precision
+    .field-evaluate = Evaluate
+    .field-text-to-display = Text to display
+    .field-address = Address
+    .field-select-link-file = Select a file to link
+    .field-current-units = Current units
+    .field-use-scale-name = Use scale name
     .field-cat-date = Date & Time
     .field-cat-document = Document
     .field-cat-other = Other

locales/el-GR/opencadstudio.ftl

@@ -4093,6 +4093,14 @@ insert =
     .field-select-object = Select object
     .field-expression = Field expression
     .field-help = Inserts a field: text that updates from the drawing, the date or another source.
+    .field-cat-linked = Linked
+    .field-current-precision = Current precision
+    .field-evaluate = Evaluate
+    .field-text-to-display = Text to display
+    .field-address = Address
+    .field-select-link-file = Select a file to link
+    .field-current-units = Current units
+    .field-use-scale-name = Use scale name
     .field-cat-date = Date & Time
     .field-cat-document = Document
     .field-cat-other = Other

locales/en-US/opencadstudio.ftl

@@ -4094,6 +4094,14 @@ insert =
     .field-select-object = Select object
     .field-expression = Field expression
     .field-help = Inserts a field: text that updates from the drawing, the date or another source.
+    .field-cat-linked = Linked
+    .field-current-precision = Current precision
+    .field-evaluate = Evaluate
+    .field-text-to-display = Text to display
+    .field-address = Address
+    .field-select-link-file = Select a file to link
+    .field-current-units = Current units
+    .field-use-scale-name = Use scale name
     .field-cat-date = Date & Time
     .field-cat-document = Document
     .field-cat-other = Other

locales/es-ES/opencadstudio.ftl

@@ -4093,6 +4093,14 @@ insert =
     .field-select-object = Select object
     .field-expression = Field expression
     .field-help = Inserts a field: text that updates from the drawing, the date or another source.
+    .field-cat-linked = Linked
+    .field-current-precision = Current precision
+    .field-evaluate = Evaluate
+    .field-text-to-display = Text to display
+    .field-address = Address
+    .field-select-link-file = Select a file to link
+    .field-current-units = Current units
+    .field-use-scale-name = Use scale name
     .field-cat-date = Date & Time
     .field-cat-document = Document
     .field-cat-other = Other

locales/fi-FI/opencadstudio.ftl

@@ -4092,6 +4092,14 @@ insert =
     .field-select-object = Select object
     .field-expression = Field expression
     .field-help = Inserts a field: text that updates from the drawing, the date or another source.
+    .field-cat-linked = Linked
+    .field-current-precision = Current precision
+    .field-evaluate = Evaluate
+    .field-text-to-display = Text to display
+    .field-address = Address
+    .field-select-link-file = Select a file to link
+    .field-current-units = Current units
+    .field-use-scale-name = Use scale name
     .field-cat-date = Date & Time
     .field-cat-document = Document
     .field-cat-other = Other

locales/fr-FR/opencadstudio.ftl

@@ -4093,6 +4093,14 @@ insert =
     .field-select-object = Select object
     .field-expression = Field expression
     .field-help = Inserts a field: text that updates from the drawing, the date or another source.
+    .field-cat-linked = Linked
+    .field-current-precision = Current precision
+    .field-evaluate = Evaluate
+    .field-text-to-display = Text to display
+    .field-address = Address
+    .field-select-link-file = Select a file to link
+    .field-current-units = Current units
+    .field-use-scale-name = Use scale name
     .field-cat-date = Date & Time
     .field-cat-document = Document
     .field-cat-other = Other

locales/hi-IN/opencadstudio.ftl

@@ -4081,6 +4081,14 @@ insert =
     .field-select-object = Select object
     .field-expression = Field expression
     .field-help = Inserts a field: text that updates from the drawing, the date or another source.
+    .field-cat-linked = Linked
+    .field-current-precision = Current precision
+    .field-evaluate = Evaluate
+    .field-text-to-display = Text to display
+    .field-address = Address
+    .field-select-link-file = Select a file to link
+    .field-current-units = Current units
+    .field-use-scale-name = Use scale name
     .field-cat-date = Date & Time
     .field-cat-document = Document
     .field-cat-other = Other

locales/hu-HU/opencadstudio.ftl

@@ -4092,6 +4092,14 @@ insert =
     .field-select-object = Select object
     .field-expression = Field expression
     .field-help = Inserts a field: text that updates from the drawing, the date or another source.
+    .field-cat-linked = Linked
+    .field-current-precision = Current precision
+    .field-evaluate = Evaluate
+    .field-text-to-display = Text to display
+    .field-address = Address
+    .field-select-link-file = Select a file to link
+    .field-current-units = Current units
+    .field-use-scale-name = Use scale name
     .field-cat-date = Date & Time
     .field-cat-document = Document
     .field-cat-other = Other

locales/it-IT/opencadstudio.ftl

@@ -4092,6 +4092,14 @@ insert =
     .field-select-object = Select object
     .field-expression = Field expression
     .field-help = Inserts a field: text that updates from the drawing, the date or another source.
+    .field-cat-linked = Linked
+    .field-current-precision = Current precision
+    .field-evaluate = Evaluate
+    .field-text-to-display = Text to display
+    .field-address = Address
+    .field-select-link-file = Select a file to link
+    .field-current-units = Current units
+    .field-use-scale-name = Use scale name
     .field-cat-date = Date & Time
     .field-cat-document = Document
     .field-cat-other = Other

locales/ja-JP/opencadstudio.ftl

@@ -4081,6 +4081,14 @@ insert =
     .field-select-object = Select object
     .field-expression = Field expression
     .field-help = Inserts a field: text that updates from the drawing, the date or another source.
+    .field-cat-linked = Linked
+    .field-current-precision = Current precision
+    .field-evaluate = Evaluate
+    .field-text-to-display = Text to display
+    .field-address = Address
+    .field-select-link-file = Select a file to link
+    .field-current-units = Current units
+    .field-use-scale-name = Use scale name
     .field-cat-date = Date & Time
     .field-cat-document = Document
     .field-cat-other = Other

locales/ko-KR/opencadstudio.ftl

@@ -4092,6 +4092,14 @@ insert =
     .field-select-object = Select object
     .field-expression = Field expression
     .field-help = Inserts a field: text that updates from the drawing, the date or another source.
+    .field-cat-linked = Linked
+    .field-current-precision = Current precision
+    .field-evaluate = Evaluate
+    .field-text-to-display = Text to display
+    .field-address = Address
+    .field-select-link-file = Select a file to link
+    .field-current-units = Current units
+    .field-use-scale-name = Use scale name
     .field-cat-date = Date & Time
     .field-cat-document = Document
     .field-cat-other = Other

locales/nl-NL/opencadstudio.ftl

@@ -4091,6 +4091,14 @@ insert =
     .field-select-object = Select object
     .field-expression = Field expression
     .field-help = Inserts a field: text that updates from the drawing, the date or another source.
+    .field-cat-linked = Linked
+    .field-current-precision = Current precision
+    .field-evaluate = Evaluate
+    .field-text-to-display = Text to display
+    .field-address = Address
+    .field-select-link-file = Select a file to link
+    .field-current-units = Current units
+    .field-use-scale-name = Use scale name
     .field-cat-date = Date & Time
     .field-cat-document = Document
     .field-cat-other = Other

locales/pl-PL/opencadstudio.ftl

@@ -4092,6 +4092,14 @@ insert =
     .field-select-object = Select object
     .field-expression = Field expression
     .field-help = Inserts a field: text that updates from the drawing, the date or another source.
+    .field-cat-linked = Linked
+    .field-current-precision = Current precision
+    .field-evaluate = Evaluate
+    .field-text-to-display = Text to display
+    .field-address = Address
+    .field-select-link-file = Select a file to link
+    .field-current-units = Current units
+    .field-use-scale-name = Use scale name
     .field-cat-date = Date & Time
     .field-cat-document = Document
     .field-cat-other = Other

locales/pt-BR/opencadstudio.ftl

@@ -4093,6 +4093,14 @@ insert =
     .field-select-object = Select object
     .field-expression = Field expression
     .field-help = Inserts a field: text that updates from the drawing, the date or another source.
+    .field-cat-linked = Linked
+    .field-current-precision = Current precision
+    .field-evaluate = Evaluate
+    .field-text-to-display = Text to display
+    .field-address = Address
+    .field-select-link-file = Select a file to link
+    .field-current-units = Current units
+    .field-use-scale-name = Use scale name
     .field-cat-date = Date & Time
     .field-cat-document = Document
     .field-cat-other = Other

locales/ru-RU/opencadstudio.ftl

@@ -4094,6 +4094,14 @@ insert =
     .field-select-object = Select object
     .field-expression = Field expression
     .field-help = Inserts a field: text that updates from the drawing, the date or another source.
+    .field-cat-linked = Linked
+    .field-current-precision = Current precision
+    .field-evaluate = Evaluate
+    .field-text-to-display = Text to display
+    .field-address = Address
+    .field-select-link-file = Select a file to link
+    .field-current-units = Current units
+    .field-use-scale-name = Use scale name
     .field-cat-date = Date & Time
     .field-cat-document = Document
     .field-cat-other = Other

locales/tr-TR/opencadstudio.ftl

@@ -4053,6 +4053,14 @@ insert =
     .field-select-object = Nesne seç
     .field-expression = Alan ifadesi
     .field-help = Bir alan ekler: çizimden, tarihten veya başka bir kaynaktan güncellenen metin.
+    .field-cat-linked = Bağlantılı
+    .field-current-precision = Geçerli hassasiyet
+    .field-evaluate = Hesapla
+    .field-text-to-display = Görüntülenecek metin
+    .field-address = Adres
+    .field-select-link-file = Bağlanacak dosyayı seçin
+    .field-current-units = Geçerli birimler
+    .field-use-scale-name = Ölçek adını kullan
     .field-cat-date = Tarih ve Saat
     .field-cat-document = Belge
     .field-cat-other = Diğer

locales/zh-CN/opencadstudio.ftl

@@ -4076,6 +4076,14 @@ insert =
     .field-select-object = Select object
     .field-expression = Field expression
     .field-help = Inserts a field: text that updates from the drawing, the date or another source.
+    .field-cat-linked = Linked
+    .field-current-precision = Current precision
+    .field-evaluate = Evaluate
+    .field-text-to-display = Text to display
+    .field-address = Address
+    .field-select-link-file = Select a file to link
+    .field-current-units = Current units
+    .field-use-scale-name = Use scale name
     .field-cat-date = Date & Time
     .field-cat-document = Document
     .field-cat-other = Other

locales/zh-TW/opencadstudio.ftl

@@ -4088,6 +4088,14 @@ insert =
     .field-select-object = Select object
     .field-expression = Field expression
     .field-help = Inserts a field: text that updates from the drawing, the date or another source.
+    .field-cat-linked = Linked
+    .field-current-precision = Current precision
+    .field-evaluate = Evaluate
+    .field-text-to-display = Text to display
+    .field-address = Address
+    .field-select-link-file = Select a file to link
+    .field-current-units = Current units
+    .field-use-scale-name = Use scale name
     .field-cat-date = Date & Time
     .field-cat-document = Document
     .field-cat-other = Other

src/app/commands/field.rs

@@ -133,6 +133,28 @@ impl OpenCADStudio {
             }
             FieldDialogMsg::Named(k) => state.named = Some(k),
             FieldDialogMsg::ObjectProp(p) => state.object_prop = Some(p),
+            FieldDialogMsg::Formula(v) => state.formula = v,
+            FieldDialogMsg::FormulaFormat(k) => state.formula_format = k,
+            FieldDialogMsg::FormulaPrecision(k) => state.formula_precision = k,
+            FieldDialogMsg::Evaluate => {}
+            FieldDialogMsg::HyperlinkText(v) => state.hyperlink_text = v,
+            FieldDialogMsg::HyperlinkUrl(v) => state.hyperlink_url = v,
+            FieldDialogMsg::BrowseHyperlink => {
+                return Task::perform(
+                    async {
+                        rfd::AsyncFileDialog::new()
+                            .set_title(crate::t!("Select a file to link").as_ref())
+                            .pick_file()
+                            .await
+                            .map(|h| crate::sys::handle_path(&h))
+                    },
+                    |path| match path {
+                        Some(path) => Message::FieldDialog(FieldDialogMsg::HyperlinkUrl(path.to_string_lossy().into_owned())),
+                        None => Message::Noop,
+                    },
+                );
+            }
+            FieldDialogMsg::PlotScale(k) => state.plot_scale = k,
             FieldDialogMsg::SelectObject => {
                 // The dialog waits while one object is picked.
                 self.active_modal = None;

src/app/control/actions.rs

@@ -981,7 +981,8 @@ impl OpenCADStudio {
             // One field of the open Field dialog: `category=<index>`, `name=Date`,
             // `date=yyyy-MM-dd`, `case=0..4`, `file=1|2|3`, `ext=0|1`, `size=0..2`,
             // `sysvar=dimscale`, `diesel=…`, `named_type=<index>`, `named=<index>`,
-            // `prop=Area`, `select_object`.
+            // `prop=Area`, `select_object`, `formula=(1+2)*3`, `formula_format=<index>`,
+            // `precision=<index>`, `link_text=…`, `link_url=…`, `plot_scale=<index>`.
             "field_dialog" => {
                 use crate::ui::window::field_dialog::{self as fd, FieldDialogMsg as F};
                 let value = string(req, "value")?;
@@ -1004,6 +1005,12 @@ impl OpenCADStudio {
                     "named" => F::Named(index()?),
                     "prop" => F::ObjectProp(known(&["Area", "Center", "Circumference", "Diameter", "EndPoint", "Length", "Radius", "StartPoint"])?),
                     "select_object" => F::SelectObject,
+                    "formula" => F::Formula(v.into()),
+                    "formula_format" => F::FormulaFormat(index()?),
+                    "precision" => F::FormulaPrecision(index()?),
+                    "link_text" => F::HyperlinkText(v.into()),
+                    "link_url" => F::HyperlinkUrl(v.into()),
+                    "plot_scale" => F::PlotScale(index()?),
                     _ => return Err(failure("invalid_value", "Unknown field dialog key")),
                 })
             }

src/entities/field.rs

@@ -17,11 +17,29 @@ struct OcsFieldContext<'a>(Option<&'a CadDocument>);
 
 impl FieldContext for OcsFieldContext<'_> {
     fn now_julian(&self) -> f64 {
-        // Unix epoch is Julian Day 2440587.5.
-        epoch_secs() as f64 / 86_400.0 + 2_440_587.5
+        // Fields show local time. Unix epoch is Julian Day 2440587.5.
+        now_utc_julian() + utc_offset_days()
+    }
+
+    fn file_times(&self) -> Option<(f64, f64)> {
+        #[cfg(not(target_arch = "wasm32"))]
+        {
+            let meta = std::fs::metadata(self.0?.source_path.as_deref()?).ok()?;
+            let julian = |t: std::time::SystemTime| -> Option<f64> {
+                let secs = t.duration_since(std::time::UNIX_EPOCH).ok()?.as_secs_f64();
+                Some(secs / 86_400.0 + 2_440_587.5 + utc_offset_days())
+            };
+            return Some((julian(meta.created().ok()?)?, julian(meta.modified().ok()?)?));
+        }
+        #[cfg(target_arch = "wasm32")]
+        None
     }
 
     fn login(&self) -> Option<String> {
+        // The account's display name, as the reference shows it.
+        if let Some(name) = display_name() {
+            return Some(name);
+        }
         #[cfg(not(target_arch = "wasm32"))]
         {
             for var in ["USER", "LOGNAME", "USERNAME"] {
@@ -275,3 +293,70 @@ pub fn hosts_field(document: &CadDocument, entity: &codec::entities::EntityType)
         Some(codec::objects::ObjectType::Dictionary(d)) if d.get("ACAD_FIELD").is_some()
     )
 }
+
+fn now_utc_julian() -> f64 {
+    epoch_secs() as f64 / 86_400.0 + 2_440_587.5
+}
+
+/// Local time minus UTC, in days (the zone's current offset).
+pub fn utc_offset_days() -> f64 {
+    #[cfg(target_os = "windows")]
+    {
+        use windows_sys::Win32::Foundation::FILETIME;
+        use windows_sys::Win32::Storage::FileSystem::FileTimeToLocalFileTime;
+        // 100 ns ticks since 1601-01-01.
+        let ticks = (epoch_secs() as u64 + 11_644_473_600) * 10_000_000;
+        let utc = FILETIME { dwLowDateTime: ticks as u32, dwHighDateTime: (ticks >> 32) as u32 };
+        let mut local = FILETIME { dwLowDateTime: 0, dwHighDateTime: 0 };
+        if unsafe { FileTimeToLocalFileTime(&utc, &mut local) } != 0 {
+            let local = ((local.dwHighDateTime as u64) << 32) | local.dwLowDateTime as u64;
+            return (local as i64 - ticks as i64) as f64 / 864_000_000_000.0;
+        }
+        0.0
+    }
+    #[cfg(not(target_os = "windows"))]
+    0.0
+}
+
+/// A DWG stores its header dates in universal time only; the local TDCREATE
+/// and TDUPDATE come from the zone, as the reference derives them on load.
+pub fn local_header_dates(document: &mut CadDocument) {
+    let h = &mut document.header;
+    let offset = utc_offset_days();
+    if h.universal_create_date_julian != 0.0 && h.create_date_julian == h.universal_create_date_julian {
+        h.create_date_julian = h.universal_create_date_julian + offset;
+    }
+    if h.universal_update_date_julian != 0.0 && h.update_date_julian == h.universal_update_date_julian {
+        h.update_date_julian = h.universal_update_date_julian + offset;
+    }
+}
+
+/// Stamp the header's update date (and the creation date of a new drawing)
+/// in local and universal time before a save.
+pub fn stamp_save_dates(document: &mut CadDocument) {
+    let utc = now_utc_julian();
+    let local = utc + utc_offset_days();
+    let h = &mut document.header;
+    if h.create_date_julian == 0.0 && h.universal_create_date_julian == 0.0 {
+        h.create_date_julian = local;
+        h.universal_create_date_julian = utc;
+    }
+    h.update_date_julian = local;
+    h.universal_update_date_julian = utc;
+}
+
+/// The signed-in account's display name, when it has one.
+fn display_name() -> Option<String> {
+    #[cfg(target_os = "windows")]
+    {
+        use windows_sys::Win32::Security::Authentication::Identity::{GetUserNameExW, NameDisplay};
+        let mut buffer = [0u16; 256];
+        let mut len = buffer.len() as u32;
+        if unsafe { GetUserNameExW(NameDisplay, buffer.as_mut_ptr(), &mut len) } && len > 0 {
+            return Some(String::from_utf16_lossy(&buffer[..len as usize])).filter(|n| !n.trim().is_empty());
+        }
+        None
+    }
+    #[cfg(not(target_os = "windows"))]
+    None
+}

src/io/mod.rs

@@ -723,6 +723,7 @@ async fn load_web_bytes(
     }
     fix_viewport_status_flags(&mut doc);
     fix_current_style_names(&mut doc);
+    crate::entities::field::local_header_dates(&mut doc);
     progress.set(crate::app::OPEN_PHASE_CACHING, 7000, 0, 1);
     let dropped = purge_corrupt_entities(&mut doc);
     if !recovery_mode && dropped > 0 {
@@ -764,6 +765,7 @@ pub fn load_bytes(name: &str, bytes: Vec<u8>) -> Result<CadDocument, String> {
                 .map_err(|e| e.to_string())?;
             fix_viewport_status_flags(&mut doc);
             fix_current_style_names(&mut doc);
+    crate::entities::field::local_header_dates(&mut doc);
             Ok(doc)
         }
         "dxf" => {
@@ -775,6 +777,7 @@ pub fn load_bytes(name: &str, bytes: Vec<u8>) -> Result<CadDocument, String> {
             fix_dxf_layout_plot_settings(&mut doc);
             fix_viewport_status_flags(&mut doc);
             fix_current_style_names(&mut doc);
+    crate::entities::field::local_header_dates(&mut doc);
             Ok(doc)
         }
         _ => Err(format!("Unsupported file format: .{ext}")),
@@ -1040,6 +1043,7 @@ fn finalize_loaded_outcome(
     }
     fix_viewport_status_flags(doc);
     fix_current_style_names(doc);
+    crate::entities::field::local_header_dates(doc);
     resolve_raster_image_paths(doc, path.parent());
     doc.source_path = Some(path.to_string_lossy().into_owned());
     Ok(outcome)

src/locale_catalog.rs

@@ -235,6 +235,14 @@ pub(super) fn message_attribute(source: &str) -> Option<(&'static str, &'static
         "Select object" => Some(("insert", "field-select-object")),
         "Field expression" => Some(("insert", "field-expression")),
         "Inserts a field: text that updates from the drawing, the date or another source." => Some(("insert", "field-help")),
+        "Linked" => Some(("insert", "field-cat-linked")),
+        "Current precision" => Some(("insert", "field-current-precision")),
+        "Evaluate" => Some(("insert", "field-evaluate")),
+        "Text to display" => Some(("insert", "field-text-to-display")),
+        "Address" => Some(("insert", "field-address")),
+        "Select a file to link" => Some(("insert", "field-select-link-file")),
+        "Current units" => Some(("insert", "field-current-units")),
+        "Use scale name" => Some(("insert", "field-use-scale-name")),
         "Date & Time" => Some(("insert", "field-cat-date")),
         "Document" => Some(("insert", "field-cat-document")),
         "Other" => Some(("insert", "field-cat-other")),

src/scene/parametric_constraints.rs

@@ -2533,6 +2533,7 @@ impl super::Scene {
             }
         }
         crate::io::xref::strip_resolved_xref_content(&mut document);
+        crate::entities::field::stamp_save_dates(&mut document);
         document
     }
 

src/ui/window/field_dialog.rs

@@ -31,9 +31,13 @@ pub const CATEGORIES: &[(&str, &[&str])] = &[
         "Document",
         &["Author", "Comments", "Filename", "Filesize", "HyperlinkBase", "Keywords", "LastSavedBy", "Subject", "Title"],
     ),
-    ("Objects", &["NamedObject", "Object"]),
+    ("Linked", &["Hyperlink"]),
+    ("Objects", &["Formula", "NamedObject", "Object"]),
     ("Other", &["DieselExpression", "SystemVariable"]),
-    ("Plot", &["Login", "PlotDate"]),
+    (
+        "Plot",
+        &["DeviceName", "Login", "PageSetupName", "PaperSize", "PlotDate", "PlotOrientation", "PlotScale", "PlotStyleTable"],
+    ),
 ];
 
 /// The fields of a category; "All" lists every field once, sorted.
@@ -70,8 +74,15 @@ pub enum FieldKind {
     Diesel,
     NamedObject,
     Object,
+    Formula,
+    Hyperlink,
+    PlotScale,
 }
 
+/// Formula precisions: the current one, then 0 to 8 decimals.
+pub const FORMULA_PRECISIONS: &[&str] =
+    &["Current precision", "0", "0.0", "0.00", "0.000", "0.0000", "0.00000", "0.000000", "0.0000000", "0.00000000"];
+
 pub fn kind_of(name: &str) -> FieldKind {
     match name {
         "CreateDate" | "Date" | "PlotDate" | "SaveDate" => FieldKind::Date,
@@ -81,6 +92,9 @@ pub fn kind_of(name: &str) -> FieldKind {
         "DieselExpression" => FieldKind::Diesel,
         "NamedObject" => FieldKind::NamedObject,
         "Object" => FieldKind::Object,
+        "Formula" => FieldKind::Formula,
+        "Hyperlink" => FieldKind::Hyperlink,
+        "PlotScale" => FieldKind::PlotScale,
         _ => FieldKind::Text,
     }
 }
@@ -106,6 +120,14 @@ pub struct FieldDialogState {
     pub object: Option<(codec::Handle, String)>,
     pub object_props: Vec<&'static str>,
     pub object_prop: Option<&'static str>,
+    pub formula: String,
+    /// Indexes into codec FORMULA_FORMATS and FORMULA_PRECISIONS.
+    pub formula_format: usize,
+    pub formula_precision: usize,
+    pub hyperlink_text: String,
+    pub hyperlink_url: String,
+    /// Index into codec PLOT_SCALE_FORMATS.
+    pub plot_scale: usize,
     pub preview: String,
     /// Today in each of DATE_FORMATS, for the Examples list.
     pub examples: Vec<String>,
@@ -130,6 +152,12 @@ impl FieldDialogState {
             object: None,
             object_props: Vec::new(),
             object_prop: None,
+            formula: String::new(),
+            formula_format: 0,
+            formula_precision: 0,
+            hyperlink_text: String::new(),
+            hyperlink_url: String::new(),
+            plot_scale: 0,
             preview: String::new(),
             examples: Vec::new(),
         }
@@ -153,7 +181,36 @@ impl FieldDialogState {
                 };
                 (format!("\\AcVar Filename \\f \"{case}%fn{bits}\""), vec![])
             }
-            FieldKind::Filesize => (format!("\\AcVar Filesize \\f \"%ld%by{}\"", self.size_unit + 1), vec![]),
+            // Bytes are whole; kilo- and megabytes keep two decimals.
+            FieldKind::Filesize => (
+                match self.size_unit {
+                    0 => "\\AcVar Filesize \\f \"%ld%by1\"".to_string(),
+                    n => format!("\\AcVar Filesize \\f \"%.2f%by{}\"", n + 1),
+                },
+                vec![],
+            ),
+            FieldKind::Formula => {
+                let format = codec::fields::FORMULA_FORMATS.get(self.formula_format).map_or("", |f| f.1);
+                let precision = match self.formula_precision {
+                    0 => String::new(),
+                    n => format!("%pr{}", n - 1),
+                };
+                let body = format!("\\AcExpr ({})", self.formula.trim());
+                match format!("{format}{precision}") {
+                    f if f.is_empty() => (body, vec![]),
+                    f => (format!("{body} \\f \"{f}\""), vec![]),
+                }
+            }
+            FieldKind::Hyperlink => (
+                format!("\\AcVar \\href \"{}##{}#0\"", self.hyperlink_url.trim(), self.hyperlink_text),
+                vec![],
+            ),
+            FieldKind::PlotScale => (
+                codec::fields::PLOT_SCALE_FORMATS
+                    .get(self.plot_scale)
+                    .map_or_else(|| "\\AcVar PlotScale".to_string(), |f| f.1.to_string()),
+                vec![],
+            ),
             FieldKind::SystemVariable => (format!("\\AcVar {}", self.sysvar), vec![]),
             FieldKind::Diesel => (format!("\\AcDiesel {}", self.diesel), vec![]),
             FieldKind::NamedObject => match self.named.and_then(|i| self.named_names.get(i)) {
@@ -176,6 +233,8 @@ impl FieldDialogState {
             FieldKind::NamedObject => self.named.is_some(),
             FieldKind::Object => self.object.is_some() && self.object_prop.is_some(),
             FieldKind::Diesel => !self.diesel.trim().is_empty(),
+            FieldKind::Formula => !self.formula.trim().is_empty(),
+            FieldKind::Hyperlink => !self.hyperlink_url.trim().is_empty(),
             _ => true,
         }
     }
@@ -211,6 +270,14 @@ pub enum FieldDialogMsg {
     Named(usize),
     SelectObject,
     ObjectProp(&'static str),
+    Formula(String),
+    FormulaFormat(usize),
+    FormulaPrecision(usize),
+    Evaluate,
+    HyperlinkText(String),
+    HyperlinkUrl(String),
+    BrowseHyperlink,
+    PlotScale(usize),
     Help,
     Ok,
 }
@@ -396,6 +463,85 @@ fn format_panel<'a>(state: &'a FieldDialogState) -> Element<'a, Message> {
         ]
         .spacing(8)
         .into(),
+        FieldKind::Formula => {
+            let formats: Vec<Pick> = codec::fields::FORMULA_FORMATS
+                .iter()
+                .enumerate()
+                .map(|(i, (n, _))| Pick(i, t!(*n).into_owned()))
+                .collect();
+            let precisions: Vec<Pick> =
+                FORMULA_PRECISIONS.iter().enumerate().map(|(i, n)| Pick(i, t!(*n).into_owned())).collect();
+            column![
+                row![
+                    text(t!("Format")).size(12).width(Length::Fixed(80.0)),
+                    pick_list(Some(formats[state.formula_format].clone()), formats.clone(), |p: &Pick| p.1.clone())
+                        .on_select(|p| msg(FieldDialogMsg::FormulaFormat(p.0)))
+                        .text_size(12)
+                        .padding([5, 8])
+                        .width(Fill),
+                ]
+                .spacing(8)
+                .align_y(iced::Center),
+                row![
+                    text(t!("Precision")).size(12).width(Length::Fixed(80.0)),
+                    pick_list(
+                        Some(precisions[state.formula_precision].clone()),
+                        precisions.clone(),
+                        |p: &Pick| p.1.clone(),
+                    )
+                    .on_select(|p| msg(FieldDialogMsg::FormulaPrecision(p.0)))
+                    .text_size(12)
+                    .padding([5, 8])
+                    .width(Fill),
+                ]
+                .spacing(8)
+                .align_y(iced::Center),
+            ]
+            .spacing(8)
+            .into()
+        }
+        FieldKind::Hyperlink => column![
+            row![
+                text(t!("Text to display")).size(12).width(Length::Fixed(120.0)),
+                text_input("", &state.hyperlink_text)
+                    .size(12)
+                    .padding([5, 8])
+                    .style(field_style)
+                    .on_input(|v| msg(FieldDialogMsg::HyperlinkText(v))),
+            ]
+            .spacing(8)
+            .align_y(iced::Center),
+            row![
+                text(t!("Address")).size(12).width(Length::Fixed(120.0)),
+                text_input("https://", &state.hyperlink_url)
+                    .size(12)
+                    .padding([5, 8])
+                    .font(iced::Font::MONOSPACE)
+                    .style(field_style)
+                    .on_input(|v| msg(FieldDialogMsg::HyperlinkUrl(v))),
+                button(text("…").size(12))
+                    .on_press(msg(FieldDialogMsg::BrowseHyperlink))
+                    .style(button_style(false))
+                    .padding([5, 10]),
+            ]
+            .spacing(8)
+            .align_y(iced::Center),
+        ]
+        .spacing(8)
+        .into(),
+        FieldKind::PlotScale => column![
+            text(t!("Format")).size(12),
+            list(
+                codec::fields::PLOT_SCALE_FORMATS
+                    .iter()
+                    .enumerate()
+                    .map(|(i, (n, _))| (t!(*n).into_owned(), state.plot_scale == i, FieldDialogMsg::PlotScale(i)))
+                    .collect(),
+                170.0,
+            ),
+        ]
+        .spacing(8)
+        .into(),
         FieldKind::Object => column![
             row![
                 text(t!("Object type")).size(12).width(Length::Fixed(96.0)),
@@ -460,7 +606,31 @@ pub fn view<'a>(
             .padding([6, 8])
             .width(Fill),
     );
-    let right = column![card(t!("Format").into_owned(), format_panel(state)), preview].spacing(10);
+    let right = match kind_of(state.name) {
+        FieldKind::Formula => column![
+            card(
+                t!("Formula").into_owned(),
+                column![
+                    text_input("(12+3)*2", &state.formula)
+                        .size(12)
+                        .padding([8, 8])
+                        .font(iced::Font::MONOSPACE)
+                        .style(field_style)
+                        .on_input(|v| msg(FieldDialogMsg::Formula(v))),
+                    button(text(t!("Evaluate")).size(12))
+                        .on_press(msg(FieldDialogMsg::Evaluate))
+                        .style(button_style(false))
+                        .padding([5, 14]),
+                ]
+                .spacing(8),
+            ),
+            card(t!("Format").into_owned(), format_panel(state)),
+            preview,
+        ]
+        .spacing(10),
+        FieldKind::Hyperlink => column![card(t!("Hyperlink").into_owned(), format_panel(state)), preview].spacing(10),
+        _ => column![card(t!("Format").into_owned(), format_panel(state)), preview].spacing(10),
+    };
     let (code, _) = state.code();
     let expression = column![
         text(t!("Field expression")).size(12),