feat: embed images (OLE2FRAME), print pipeline fixes, plot prefs, community fonts

- IMAGEEMBED: pack raster images into OLE2FRAME entities so a .dwg is
  self-contained; 'Embed Image' entry in the XREF attach menu; control/MCP
  op embed_image for external tools; dxf_name for OLE2FRAME queries.
- Scene: populate_images_from_document now rebuilds OLE2FRAME and PDF
  underlay models too (they used to vanish after any XREF op).
- Printing: add PRINTER_ENUM_NETWORK pass when listing printers; GDI
  spooler fallback (hayro raster at 300 DPI + StretchDIBits) for hosts
  whose PDF handler registers no print verb; DEVMODE orientation with a
  90-degree raster rotation fallback for v4 drivers; fix the fit-scale
  precedence bug that printed blank pages.
- PDF export dialogs on Windows use the async file dialog so the native
  overwrite confirmation no longer deadlocks the UI thread.
- Plot dialog: persist the chosen printer (saved on selection) and the
  picked plot window across sessions; page setups with no device no
  longer reset the output device.
- Community fonts: detect unresolvable .shx references on open and offer
  a download from the repository's fonts/ folder (contribution guide in
  fonts/README.md); custom font source URL setting for intranet font
  servers; downloaded fonts resolve from the per-user fonts directory.

Cargo.toml

@@ -61,7 +61,7 @@ iced_test = { git = "https://github.com/iced-rs/iced.git", rev = "23604ff22ab0aa
 naga = { version = "27", features = ["wgsl-in"] }
 
 [target.'cfg(target_os = "windows")'.dependencies]
-windows-sys = { version = "0.61", features = ["Win32_UI_Shell", "Win32_UI_WindowsAndMessaging", "Win32_System_Com", "Win32_System_Registry", "Win32_Storage_FileSystem", "Win32_Foundation", "Win32_Graphics_Printing"] }
+windows-sys = { version = "0.61", features = ["Win32_UI_Shell", "Win32_UI_WindowsAndMessaging", "Win32_System_Com", "Win32_System_Registry", "Win32_Storage_FileSystem", "Win32_Foundation", "Win32_Graphics_Printing", "Win32_Graphics_Gdi", "Win32_Storage_Xps"] }
 
 [target.'cfg(target_os = "linux")'.dependencies]
 ashpd = { version = "0.13.13", default-features = false, features = ["async-io", "wayland"] }

fonts/README.md

@@ -0,0 +1,32 @@
+# OpenCADStudio Community Fonts
+
+Thư mục này là **kho font cộng đồng** của OpenCADStudio. Khi mở một bản vẽ
+DWG/DXF tham chiếu font (`.shx`) không có trên máy, ứng dụng sẽ hỏi người dùng
+và tự động tải font từ thư mục này, thay vì vẽ chữ bằng font thay thế bị lệch/vỡ.
+
+When a drawing references an `.shx` font that is missing on the machine,
+OpenCADStudio offers to download it from this folder automatically instead of
+rendering with a mismatched substitute font.
+
+## Cách đóng góp / How to contribute
+
+1. Fork repository, thêm font vào thư mục `fonts/` ở **thư mục gốc của repo**
+   (cùng cấp với `src/`, `crates/`, …), rồi mở Pull Request.
+2. Giữ nguyên **tên file viết thường** như bản vẽ tham chiếu, ví dụ
+   `vnarial.shx`, `romans.shx`, `simplex.shx`. Ứng dụng so khớp tên file
+   không phân biệt hoa/thường.
+3. Định dạng hỗ trợ: `.shx` (AutoCAD compiled shape font).
+4. **Giấy phép / License**: chỉ đóng góp font bạn có quyền phân phối lại —
+   font do bạn tự vẽ, font nguồn mở, hoặc font thuộc public domain.
+   Ghi nguồn + giấy phép vào cuối file này theo mẫu bên dưới.
+   Only contribute fonts you have the right to redistribute, and record the
+   source and license below.
+
+Ứng dụng tải font về thư mục cài đặt người dùng
+(`%APPDATA%/OpenCADStudio/fonts` trên Windows) và dùng lại cho các lần mở sau.
+
+## Danh mục font / Font catalog
+
+| File | Nguồn / Source | Giấy phép / License |
+|------|----------------|---------------------|
+| —    | —              | —                   |

src/app/command_driver.rs

@@ -4635,6 +4635,7 @@ impl OpenCADStudio {
                     let x1 = p1.x.max(p2.x);
                     let y1 = p1.y.max(p2.y);
                     self.plot_window = Some((x0, y0, x1, y1));
+                    self.plot_dialog.window = self.plot_window;
                     self.command_line.push_output(
                         crate::tf!("Plot window: {x0:.2},{y0:.2} to {x1:.2},{y1:.2}").as_ref(),
                     );
@@ -4642,6 +4643,8 @@ impl OpenCADStudio {
                     // receive the two clicks — bring the dialog back with the
                     // window now active.
                     self.plot_dialog.area = "Window".to_string();
+                    // Remember the pick immediately, like the printer choice.
+                    self.save_config();
                     self.active_modal = Some(super::ModalKind::Plot);
                 } else {
                     // PLOTWINDOW always describes the plotted layout. In MSPACE
@@ -4654,10 +4657,12 @@ impl OpenCADStudio {
                     let x2 = p1.x.max(p2.x);
                     let y2 = p1.y.max(p2.y);
                     self.plot_window = Some((x1, y1, x2, y2));
+                    self.plot_dialog.window = self.plot_window;
                     self.command_line.push_output(
                         crate::tf!("Plot window: {x1:.2},{y1:.2} to {x2:.2},{y2:.2}").as_ref(),
                     );
                     self.plot_dialog.area = "Window".to_string();
+                    self.save_config();
                     self.active_modal = Some(super::ModalKind::Plot);
                 }
                 self.tabs[i].active_cmd = None;

src/app/commands/draw.rs

@@ -57,6 +57,10 @@ impl OpenCADStudio {
                 return Some(Task::done(Message::ImagePick));
             }
 
+            cmd if cmd == "IMAGEEMBED" => {
+                return Some(Task::done(Message::ImageEmbedPick));
+            }
+
             "REVCLOUD" | "REVCLOUD_RECTANGULAR" | "REVCLOUD_POLYGONAL" | "REVCLOUD_FREEHAND" => {
                 use crate::modules::draw::draw::revcloud::RevCloudCommand;
                 let view_height = self.tabs[i].scene.camera.borrow().ortho_size() as f64 * 2.0;

src/app/commands/mod.rs

@@ -622,6 +622,7 @@ inventory::submit!(crate::command::CommandRegistration {
         "IM",
         "IMAGE",
         "IMAGEATTACH",
+        "IMAGEEMBED",
         "IMPORTOBJ",
         "ISOLATEOBJECTS",
         "LA",

src/app/control/actions.rs

@@ -67,7 +67,54 @@ pub(super) const NAMES: &[&str] = &[
     "undo",
     "redo",
 ];
+
+/// Parse the `at` placement point for `embed_image`: `[x,y]` or `[x,y,z]`.
+fn embed_point(req: &Value) -> Result<acadrust::types::Vector3, Value> {
+    let values = req["at"]
+        .as_array()
+        .filter(|v| (2..=3).contains(&v.len()))
+        .ok_or_else(|| failure("invalid_point", "Expected at:[x,y] or [x,y,z]"))?;
+    let mut p = [0.0_f64; 3];
+    for (i, v) in values.iter().enumerate() {
+        p[i] = v
+            .as_f64()
+            .filter(|v| v.is_finite())
+            .ok_or_else(|| failure("invalid_point", "Expected finite coordinates"))?;
+    }
+    Ok(acadrust::types::Vector3::new(p[0], p[1], p[2]))
+}
 impl OpenCADStudio {
+    /// `embed_image` — pack the picture at `path` into an OLE2FRAME placed
+    /// with its lower-left corner at `at` (default width ≈ pixel_width/100,
+    /// like the interactive command's Enter answer) and commit it as one
+    /// undo step. The drawing stays self-contained: no external file to lose.
+    #[cfg(not(target_arch = "wasm32"))]
+    pub(super) fn control_embed_image(&mut self, req: &Value) -> Result<Task<Message>, Value> {
+        let i = self.active_tab;
+        let path = string(req, "path")?;
+        let image = crate::io::ole_embed::EmbeddedImage::from_file(std::path::Path::new(&path))
+            .map_err(|e| failure("embed_failed", e))?;
+        let at = embed_point(req)?;
+        let default_width = (image.pixel_width as f64 / 100.0).max(1.0);
+        let width = req["width"].as_f64().filter(|w| *w > 0.0).unwrap_or(default_width);
+        self.push_undo_snapshot(i, "IMAGEEMBED");
+        let handle = crate::io::ole_embed::add_embedded_image(
+            &mut self.tabs[i].scene.document,
+            &image,
+            at,
+            width,
+        )
+        .map_err(|e| failure("embed_failed", e))?;
+        self.post_ref_op(i);
+        self.set_control_result(json!({
+            "handle": format!("{:X}", handle.value()),
+            "kind": "Ole2Frame",
+            "path": path,
+            "width": width,
+        }));
+        Ok(Task::none())
+    }
+
     pub(super) fn control_properties(&mut self) -> Value {
         self.refresh_properties();
         json!({"ok":true,"sections":self.tabs[self.active_tab].properties.sections.iter().map(|s|json!({"title":s.title,"properties":s.props.iter().map(|p|{

src/app/control/mod.rs

@@ -781,6 +781,8 @@ impl OpenCADStudio {
             "set_properties" => self.control_set_record_properties(req)?,
             "action" => self.control_ui_action(req)?,
             #[cfg(not(target_arch = "wasm32"))]
+            "embed_image" => self.control_embed_image(req)?,
+            #[cfg(not(target_arch = "wasm32"))]
             "save" => {
                 let path = req["path"]
                     .as_str()
@@ -1387,4 +1389,40 @@ mod tests {
         );
         let _ = std::fs::remove_file(path);
     }
+
+    #[test]
+    fn embed_image_op_places_an_ole2frame_and_undoes_it() {
+        let mut app = OpenCADStudio::new_for_test();
+        request(&mut app, json!({"op":"new"}));
+        let img = image::RgbaImage::from_pixel(40, 30, image::Rgba([9, 9, 9, 255]));
+        let path = std::env::temp_dir().join(format!("ocs-embed-{}.png", session_id()));
+        img.save(&path).unwrap();
+
+        let response = request(
+            &mut app,
+            json!({"op":"embed_image","path":path.to_string_lossy(),"at":[0,0,0],"width":20}),
+        );
+        assert_eq!(response["status"], "completed", "{response}");
+        let handle = response["result"]["handle"].as_str().unwrap().to_string();
+        assert_eq!(response["result"]["kind"], "Ole2Frame");
+        let ole_count = |app: &OpenCADStudio| {
+            app.tabs[app.active_tab]
+                .scene
+                .document
+                .entities()
+                .filter(|e| matches!(e, acadrust::EntityType::Ole2Frame(_)))
+                .count()
+        };
+        assert_eq!(ole_count(&app), 1);
+
+        // The entity must be queryable like any other and undoable as one step.
+        let queried =
+            app.automation_op(json!({"op":"entities","type":"OLE2FRAME"}).to_string().as_str());
+        assert_eq!(queried["total"], 1, "{queried}");
+        request(&mut app, json!({"op":"undo"}));
+        assert_eq!(ole_count(&app), 0);
+        let _ = std::fs::remove_file(path);
+        let _ = handle;
+    }
 }
+

src/app/mod.rs

@@ -861,6 +861,12 @@ pub(super) struct OpenCADStudio {
     point_size_relative: bool,
     /// Whether the default-association prompt has been answered.
     default_assoc_prompted: bool,
+    /// Offer to download missing `.shx` fonts on open (see `io::font_repo`).
+    check_missing_fonts: bool,
+    /// Custom font source base URL; empty selects the community repository.
+    font_source_url: String,
+    /// Editable copy of `font_source_url` shown in the missing-fonts prompt.
+    font_source_input: String,
     donation_prompt_version: String,
     /// Read-only session (`--read-only`): editing is allowed but every save
     /// path is refused. Set once at boot from the CLI config.
@@ -1137,6 +1143,9 @@ pub(super) struct OpenCADStudio {
     open_job_serial: u64,
     /// Last repair or failed-open report shown in the recovery modal.
     recovery_report: Option<crate::io::recovery::RecoveryReport>,
+    /// Missing SHX fonts of the last opened drawing, offered for download
+    /// from the community repository (see `crate::io::font_repo`).
+    missing_fonts: Option<Vec<String>>,
     /// Drawings handed to us by other launches while `opening` was busy.
     /// `opening` is a single slot that a second `OpenPathPicked` would
     /// overwrite, and `on_file_opened` drops any result arriving once it is
@@ -1757,6 +1766,8 @@ pub enum ModalKind {
     Unsaved,
     SaveDialog,
     Recovery,
+    /// Fonts referenced by the drawing are missing on this machine.
+    MissingFonts,
     RecoveryPrompt,
     Options,
     FindReplace,
@@ -3517,6 +3528,20 @@ pub enum Message {
     ImagePick,
     /// Result of the image file picker + pixel dimension decode.
     ImagePickResult(Result<(std::path::PathBuf, u32, u32), String>),
+    /// Open file-picker dialog for IMAGEEMBED command (async).
+    ImageEmbedPick,
+    /// Result of the embedded-image picker: bytes prepared for an OLE2FRAME.
+    ImageEmbedPickResult(Result<crate::io::ole_embed::EmbeddedImage, String>),
+    // ── Missing fonts ─────────────────────────────────────────────────────
+    /// Download the offered missing fonts from the community repository.
+    MissingFontsDownload,
+    /// Edit the custom font source URL in the missing-fonts prompt.
+    MissingFontsSourceChanged(String),
+    /// Close the missing-fonts prompt without downloading.
+    MissingFontsDismiss,
+    /// Fonts fetched (or failed); payload lists (name, saved-path) pairs.
+    #[cfg_attr(target_arch = "wasm32", allow(dead_code))]
+    MissingFontsResult(Result<Vec<(String, std::path::PathBuf)>, String>),
     // ── PDF Underlay ──────────────────────────────────────────────────────
     /// Open file-picker dialog for PDFATTACH command (async).
     PdfAttachPick,
@@ -3843,6 +3868,9 @@ impl OpenCADStudio {
             point_size_buf: String::new(),
             point_size_relative: true,
             default_assoc_prompted: false,
+            check_missing_fonts: true,
+            font_source_url: String::new(),
+            font_source_input: String::new(),
             donation_prompt_version: String::new(),
             read_only: false,
             update_notice_version: None,
@@ -3883,6 +3911,7 @@ impl OpenCADStudio {
             layout_settling: false,
             open_job_serial: 0,
             recovery_report: None,
+            missing_fonts: None,
             pending_opens: std::collections::VecDeque::new(),
             active_interaction_index: None,
             queued_interaction_indices: std::collections::VecDeque::new(),

src/app/settings.rs

@@ -338,6 +338,15 @@ pub struct UserSettings {
     /// prompt has already been shown. Set once the user answers (either way),
     /// so we never nag again on subsequent launches.
     pub default_assoc_prompted: bool,
+    /// Offer to download missing `.shx` fonts from the community repository
+    /// when a drawing opens (see `crate::io::font_repo`).
+    #[serde(default = "default_check_missing_fonts")]
+    pub check_missing_fonts: bool,
+    /// Custom font source base URL (empty = the OpenCADStudio community
+    /// repository). Each missing font is fetched as `{base}/{file_name}`,
+    /// so an intranet folder or a private GitHub raw folder both work.
+    #[serde(default)]
+    pub font_source_url: String,
     /// App version whose donation prompt has been displayed.
     pub donation_prompt_version: String,
     /// The graphics verdict (`GpuStatus::identity()`) whose warning popup the
@@ -470,6 +479,10 @@ fn default_dimension_continue_mode() -> i16 {
     1
 }
 
+fn default_check_missing_fonts() -> bool {
+    true
+}
+
 fn default_show_constraint_values() -> bool {
     true
 }
@@ -521,6 +534,8 @@ impl Default for UserSettings {
             snap_angle_deg: 0.0,
             otrack: false,
             default_assoc_prompted: false,
+            check_missing_fonts: true,
+            font_source_url: String::new(),
             donation_prompt_version: String::new(),
             gpu_warning_silenced: String::new(),
             disabled_plugins: Vec::new(),

src/app/update/file.rs

@@ -406,6 +406,8 @@ impl OpenCADStudio {
             snap_angle_deg: self.snap_angle_deg,
             otrack: self.snapper.otrack_enabled,
             default_assoc_prompted: self.default_assoc_prompted,
+            check_missing_fonts: self.check_missing_fonts,
+            font_source_url: self.font_source_url.clone(),
             donation_prompt_version: self.donation_prompt_version.clone(),
             gpu_warning_silenced: self.gpu_warning_silenced.clone(),
             disabled_plugins: {
@@ -489,6 +491,9 @@ impl OpenCADStudio {
         // open / tab switch), not app-global, so they are not applied here.
         self.snapper.otrack_enabled = s.otrack;
         self.default_assoc_prompted = s.default_assoc_prompted;
+        self.check_missing_fonts = s.check_missing_fonts;
+        self.font_source_url = s.font_source_url.clone();
+        self.font_source_input = s.font_source_url.clone();
         self.donation_prompt_version = s.donation_prompt_version.clone();
         self.gpu_warning_silenced = s.gpu_warning_silenced.clone();
         self.disabled_plugins = s.disabled_plugins.iter().cloned().collect();
@@ -1636,6 +1641,21 @@ impl OpenCADStudio {
             self.active_modal = Some(crate::app::ModalKind::Recovery);
             Task::none()
         } else {
+            #[cfg(not(target_arch = "wasm32"))]
+            {
+                // A drawing referencing fonts this machine lacks offers to
+                // fetch them from the community repository before the user
+                // studies garbled substitute text (unless recovery already
+                // owns the modal slot).
+                let missing = crate::io::font_repo::missing_shx_fonts(
+                    &self.tabs[i].scene.document,
+                );
+                if !missing.is_empty() && self.check_missing_fonts {
+                    self.font_source_input = self.font_source_url.clone();
+                    self.missing_fonts = Some(missing);
+                    self.active_modal = Some(crate::app::ModalKind::MissingFonts);
+                }
+            }
             self.drain_pending_open()
         };
         Task::batch([thumbs_task, pending_open_task, interaction_task])
@@ -3012,9 +3032,15 @@ impl OpenCADStudio {
                 .into_iter()
                 .map(|(name, _, factor)| (name, factor))
                 .collect();
+            // This load only refreshes paper/scale context from the layout;
+            // the device the user just plotted with must survive it.
+            let kept_printer = self.plot_dialog.printer.clone();
+            let kept_to_file = self.plot_dialog.to_file;
             if let Some(settings) = self.tabs[i].scene.effective_plot_settings() {
                 self.load_plotsettings_into_dialog(&settings);
             }
+            self.plot_dialog.printer = kept_printer;
+            self.plot_dialog.to_file = kept_to_file;
         }
         let Some(page) = self.direct_plot_page()
         else {
@@ -3178,6 +3204,7 @@ impl OpenCADStudio {
                 } else {
                     self.plot_dialog.paper_space = true;
                     self.plot_window = None;
+                    self.plot_dialog.window = None;
                     self.load_plotsettings_into_dialog(&page_setup);
                 }
                 let dialog = self.plot_dialog.clone();
@@ -3703,6 +3730,13 @@ impl OpenCADStudio {
         self.plot_prev = Some(previous);
         let cur = self.tabs[self.active_tab].scene.current_layout.clone();
         let layout_entry = format!("*{cur}*");
+        // The auto-applied page setup must not reset the output device: a
+        // drawing rarely stores one, so honouring it would snap the dialog
+        // back to the system default on every open. The user's last choice
+        // (persisted across sessions with the rest of the dialog) survives
+        // unless the setup names an explicit device of its own.
+        let kept_printer = self.plot_dialog.printer.clone();
+        let kept_to_file = self.plot_dialog.to_file;
         if self.tabs[self.active_tab]
             .scene
             .plot_settings_for(&cur)
@@ -3712,6 +3746,19 @@ impl OpenCADStudio {
         } else {
             self.select_page_setup(crate::ui::window::plot::SETUP_PREV);
         }
+        let setup_named_a_device =
+            self.plot_dialog.printer.is_some() || self.plot_dialog.to_file;
+        if !setup_named_a_device {
+            self.plot_dialog.printer = kept_printer;
+            self.plot_dialog.to_file = kept_to_file;
+        }
+        // A persisted plot window (saved with the dialog settings) restores
+        // across sessions; a freshly loaded one wins so the two stay in sync.
+        if self.plot_window.is_none() {
+            self.plot_window = self.plot_dialog.window;
+        } else {
+            self.plot_dialog.window = self.plot_window;
+        }
         if self.plot_dialog.scale.eq_ignore_ascii_case("fit") {
             self.plot_dialog.fit_to_paper = true;
             self.plot_dialog.scale = one_to_one.clone();
@@ -3768,6 +3815,9 @@ impl OpenCADStudio {
                     self.plot_dialog.to_file = false;
                     self.plot_dialog.printer = Some(s);
                 }
+                // Persist the device choice immediately, so quitting without
+                // plotting still remembers it for next session.
+                self.save_config();
                 Task::none()
             }
             M::PrinterProperties => {
@@ -4242,6 +4292,7 @@ impl OpenCADStudio {
                 ps.plot_window.upper_right_x,
                 ps.plot_window.upper_right_y,
             ));
+            self.plot_dialog.window = self.plot_window;
         }
         if !ps.current_style_sheet.is_empty()
             && self
@@ -4803,3 +4854,88 @@ impl OpenCADStudio {
         )
     }
 }
+
+#[cfg(test)]
+mod plot_device_persistence_tests {
+    use super::*;
+
+    /// Reopening the Plot dialog must keep the user's printer. Layouts in
+    /// real drawings carry plot settings with no device, and the auto-applied
+    /// page setup used to reset the choice to the system default on every
+    /// open.
+    #[test]
+    fn reopening_the_plot_dialog_keeps_the_chosen_printer() {
+        let mut app = OpenCADStudio::new_for_test();
+        // A real drawing's layout carries plot settings with no device; the
+        // auto-applied setup used to reset the choice to the default.
+        let mut ps = acadrust::objects::PlotSettings::default();
+        ps.printer_name = String::new();
+        let layout = app.tabs[app.active_tab].scene.current_layout.clone();
+        assert!(
+            app.tabs[app.active_tab]
+                .scene
+                .set_layout_plot_settings(&layout, &ps),
+            "the test layout must accept plot settings"
+        );
+        app.plot_dialog.printer = Some("Brother DCP-L2520D series".into());
+        app.plot_dialog.to_file = false;
+        app.on_plot_dialog_open();
+        assert_eq!(
+            app.plot_dialog.printer.as_deref(),
+            Some("Brother DCP-L2520D series"),
+            "the chosen printer must survive the auto-applied page setup"
+        );
+        assert!(!app.plot_dialog.to_file);
+    }
+
+    /// A layout whose plot settings name an explicit device wins over the
+    /// saved preference: selecting its setup is an explicit device choice.
+    #[test]
+    fn layout_device_overrides_the_saved_preference() {
+        let mut app = OpenCADStudio::new_for_test();
+        app.plot_dialog.printer = Some("Brother DCP-L2520D series".into());
+        let mut ps = acadrust::objects::PlotSettings::default();
+        ps.printer_name = "Godex G500".into();
+        app.load_plotsettings_into_dialog(&ps);
+        assert_eq!(app.plot_dialog.printer.as_deref(), Some("Godex G500"));
+        assert!(!app.plot_dialog.to_file);
+    }
+
+    /// A persisted plot window (saved with the dialog settings) seeds the
+    /// runtime window when the dialog reopens, so `area == "Window"` keeps
+    /// plotting the same rectangle instead of reporting an empty area.
+    #[test]
+    fn persisted_window_seeds_the_dialog_on_reopen() {
+        let mut app = OpenCADStudio::new_for_test();
+        assert!(app.plot_window.is_none());
+        app.plot_dialog.area = "Window".into();
+        app.plot_dialog.window = Some((-10.0, -5.0, 30.0, 15.0));
+        app.on_plot_dialog_open();
+        assert_eq!(app.plot_window, Some((-10.0, -5.0, 30.0, 15.0)));
+    }
+
+    /// A window freshly loaded from a layout's plot settings is mirrored into
+    /// the dialog so it persists with the next config save.
+    #[test]
+    fn layout_window_is_mirrored_into_the_dialog() {
+        let mut app = OpenCADStudio::new_for_test();
+        let mut ps = acadrust::objects::PlotSettings::default();
+        ps.plot_type = acadrust::objects::PlotType::Window;
+        ps.set_plot_window(1.0, 2.0, 3.0, 4.0);
+        app.load_plotsettings_into_dialog(&ps);
+        assert_eq!(app.plot_window, Some((1.0, 2.0, 3.0, 4.0)));
+        assert_eq!(app.plot_dialog.window, Some((1.0, 2.0, 3.0, 4.0)));
+    }
+
+    /// A layout pointing at a PDF device switches the dialog to file output.
+    #[test]
+    fn pdf_device_switches_to_file_output() {
+        let mut app = OpenCADStudio::new_for_test();
+        app.plot_dialog.printer = Some("Brother DCP-L2520D series".into());
+        let mut ps = acadrust::objects::PlotSettings::default();
+        ps.printer_name = "Microsoft Print to PDF".into();
+        app.load_plotsettings_into_dialog(&ps);
+        assert!(app.plot_dialog.to_file);
+        assert!(app.plot_dialog.printer.is_none());
+    }
+}

src/app/update/mod.rs

@@ -951,6 +951,93 @@ impl OpenCADStudio {
                 }
                 Task::none()
             }
+
+            Message::ImageEmbedPick => {
+                Task::perform(crate::io::pick_embedded_image_file(), Message::ImageEmbedPickResult)
+            }
+
+            Message::ImageEmbedPickResult(Ok(image)) => {
+                use crate::command::CadCommand;
+                use crate::modules::draw::draw::raster_image::ImageCommand;
+                self.command_line.push_output(crate::tf!(
+                    "IMAGEEMBED  \"{name}\": {w}×{h} px (embedded)",
+                    name = image.name.as_str(),
+                    w = image.pixel_width,
+                    h = image.pixel_height,
+                ).as_ref());
+                let cmd = ImageCommand::new_embedded(image);
+                let i = self.active_tab;
+                self.command_line.push_info(&cmd.prompt());
+                self.tabs[i].active_cmd = Some(Box::new(cmd));
+                Task::none()
+            }
+
+            Message::ImageEmbedPickResult(Err(e)) => {
+                if e != "Cancelled" {
+                    self.command_line
+                        .push_error(crate::tf!("IMAGEEMBED: {e}").as_ref());
+                }
+                Task::none()
+            }
+
+            Message::MissingFontsSourceChanged(url) => {
+                self.font_source_input = url;
+                Task::none()
+            }
+            Message::MissingFontsDownload => {
+                // Remember the source across sessions — and across drawings.
+                let source = self.font_source_input.trim().to_string();
+                if self.font_source_url != source {
+                    self.font_source_url = source.clone();
+                    self.save_config();
+                }
+                let fonts = self.missing_fonts.take().unwrap_or_default();
+                Task::perform(
+                    async move {
+                        let source = crate::io::font_repo::FontSource::from_url(&source);
+                        crate::io::font_repo::download_fonts(&fonts, &source)
+                    },
+                    Message::MissingFontsResult,
+                )
+            }
+            Message::MissingFontsDismiss => {
+                self.missing_fonts = None;
+                self.close_active_modal();
+                Task::none()
+            }
+            Message::MissingFontsResult(result) => {
+                self.missing_fonts = None;
+                self.close_active_modal();
+                match result {
+                    Ok(pairs) if pairs.is_empty() => {
+                        self.command_line.push_error(crate::t!(
+                            "None of the missing fonts are in the community repository yet. Contribute them at github.com/huaninstratech/OpenCADStudio/tree/main/fonts."
+                        ).as_ref());
+                    }
+                    Ok(pairs) => {
+                        for (name, path) in &pairs {
+                            self.command_line.push_output(crate::tf!(
+                                "FONT  Downloaded {name} → {path}",
+                                path = path.display()
+                            ).as_ref());
+                        }
+                        // The downloaded files change glyph resolution for the
+                        // whole drawing — reload it through the standard open
+                        // pipeline so every wire is rebuilt with the real fonts.
+                        let i = self.active_tab;
+                        if let Some(path) = self.tabs[i].current_path.clone() {
+                            return Task::done(Message::OpenExternal(path));
+                        }
+                        self.command_line.push_info(crate::t!(
+                            "Save and reopen the drawing to apply the new fonts."
+                        ).as_ref());
+                    }
+                    Err(e) => {
+                        self.command_line.push_error(crate::tf!("Font download failed: {e}").as_ref());
+                    }
+                }
+                Task::none()
+            }
             Message::PdfAttachPick => Task::perform(
                 async {
                     let handle = crate::sys::file_dialog()
@@ -8281,7 +8368,7 @@ impl OpenCADStudio {
                     .and_then(|path| path.file_stem())
                     .map(|name| format!("{}_layouts", name.to_string_lossy()))
                     .unwrap_or_else(|| "drawing_layouts".into());
-                #[cfg(not(target_arch = "wasm32"))]
+                #[cfg(all(not(target_arch = "wasm32"), not(target_os = "windows")))]
                 {
                     let Some(window_id) = self.main_window else {
                         return Task::done(Message::PrintAllPdfPath(None));
@@ -8291,6 +8378,13 @@ impl OpenCADStudio {
                     })
                     .map(Message::PrintAllPdfPath)
                 }
+                #[cfg(target_os = "windows")]
+                {
+                    Task::perform(
+                        crate::io::pdf_export::pick_pdf_path_async(stem),
+                        Message::PrintAllPdfPath,
+                    )
+                }
                 #[cfg(target_arch = "wasm32")]
                 {
                     let _ = stem;
@@ -8326,7 +8420,7 @@ impl OpenCADStudio {
                     .and_then(|p: &std::path::Path| p.file_stem())
                     .map(|s: &std::ffi::OsStr| s.to_string_lossy().into_owned())
                     .unwrap_or_else(|| "drawing".into());
-                #[cfg(not(target_arch = "wasm32"))]
+                #[cfg(all(not(target_arch = "wasm32"), not(target_os = "windows")))]
                 {
                     let Some(window_id) = self.main_window else {
                         return Task::done(Message::PlotExportPath(None));
@@ -8336,6 +8430,13 @@ impl OpenCADStudio {
                     })
                     .map(Message::PlotExportPath)
                 }
+                #[cfg(target_os = "windows")]
+                {
+                    Task::perform(
+                        crate::io::pdf_export::pick_pdf_path_async(stem),
+                        Message::PlotExportPath,
+                    )
+                }
                 #[cfg(target_arch = "wasm32")]
                 {
                     Task::perform(
@@ -8363,7 +8464,7 @@ impl OpenCADStudio {
                     .and_then(|p: &std::path::Path| p.file_stem())
                     .map(|s: &std::ffi::OsStr| s.to_string_lossy().into_owned())
                     .unwrap_or_else(|| "drawing".into());
-                #[cfg(not(target_arch = "wasm32"))]
+                #[cfg(all(not(target_arch = "wasm32"), not(target_os = "windows")))]
                 {
                     let Some(window_id) = self.main_window else {
                         return Task::done(Message::PlotWindowExportPath(None));
@@ -8373,6 +8474,13 @@ impl OpenCADStudio {
                     })
                     .map(Message::PlotWindowExportPath)
                 }
+                #[cfg(target_os = "windows")]
+                {
+                    Task::perform(
+                        crate::io::pdf_export::pick_pdf_path_async(stem),
+                        Message::PlotWindowExportPath,
+                    )
+                }
                 #[cfg(target_arch = "wasm32")]
                 {
                     Task::perform(

src/app/view/modal.rs

@@ -53,6 +53,7 @@ impl OpenCADStudio {
             Some(K::AttributeEditor) => crate::tr!("modal", "attribute-editor"),
             Some(K::SaveDialog) => crate::tr!("modal", "save-drawing-as"),
             Some(K::Recovery) => crate::tr!("modal", "recovery-report"),
+            Some(K::MissingFonts) => crate::t!("Missing fonts").into_owned(),
             Some(K::RecoveryPrompt) => crate::tr!("modal", "recovery-prompt"),
             Some(K::GpuWarning) => crate::tr!("gpu", "title"),
             None => String::new(),
@@ -1568,6 +1569,17 @@ impl OpenCADStudio {
                     )
                 })
             }
+            super::super::ModalKind::MissingFonts => {
+                let fonts = self.missing_fonts.as_ref()?;
+                let font_source = &self.font_source_input;
+                automatic_flow(ex, |flow| {
+                    crate::ui::window::missing_fonts::view_window(
+                        fonts,
+                        &font_source,
+                        flow,
+                    )
+                })
+            }
             super::super::ModalKind::Recovery => {
                 let report = self.recovery_report.as_ref()?;
                 sized_flow(ex, 680, 460, |flow| {

src/entities/names.rs

@@ -143,6 +143,7 @@ pub fn dxf_name(e: &EntityType) -> &'static str {
         EntityType::MLine(_) => "MLINE",
         EntityType::RasterImage(_) => "RASTERIMAGE",
         EntityType::Wipeout(_) => "WIPEOUT",
+        EntityType::Ole2Frame(_) => "OLE2FRAME",
         EntityType::Underlay(_) => "UNDERLAY",
         EntityType::AttributeDefinition(_) => "ATTDEF",
         EntityType::AttributeEntity(_) => "ATTRIB",

src/entities/text_support.rs

@@ -39,6 +39,12 @@ pub fn resolve_text_style(style_name: &str, document: &CadDocument) -> ResolvedT
                         .map(std::path::Path::new)
                         .and_then(|p| p.parent());
                     crate::io::resolve_image_file(file, base)
+                        // Fonts fetched from the community repository live in
+                        // the per-user fonts folder — search it last.
+                        .or_else(|| {
+                        crate::io::font_repo::local_font_file(file)
+                            .map(|path| path.to_string_lossy().into_owned())
+                    })
                 })
                 .flatten();
             if let Some(p) = shx_path {

src/io/font_repo.rs

@@ -0,0 +1,273 @@
+// Community font repository — detect missing SHX fonts and fetch them from
+// the project's `fonts/` folder on GitHub.
+//
+// DWG files reference SHX fonts by bare name (`vnarial.shx`, `romans.shx`, …).
+// When the file doesn't resolve on disk the renderer substitutes an embedded
+// LFF stroke font, which mangles drawings authored with fonts it cannot stand
+// in for. This module detects those references and downloads the real files
+// from the community folder, where anyone can contribute (see
+// `fonts/README.md` in the repository root).
+
+use std::io::Read as _;
+use std::path::{Path, PathBuf};
+
+use acadrust::CadDocument;
+
+/// The community folder's GitHub contents API (lists name + download URL).
+const REPO_API_URL: &str =
+    "https://api.github.com/repos/huaninstratech/OpenCADStudio/contents/fonts";
+
+/// Local store for fonts downloaded from the community repository. Text
+/// resolution searches here after the drawing folder.
+#[cfg(not(target_arch = "wasm32"))]
+pub fn fonts_dir() -> Option<PathBuf> {
+    crate::config::config_dir().map(|dir| dir.join("fonts"))
+}
+
+/// Web builds have no filesystem to cache fonts into.
+#[cfg(target_arch = "wasm32")]
+pub fn fonts_dir() -> Option<PathBuf> {
+    None
+}
+
+/// Where missing fonts are fetched from. The community repository is the
+/// default; a custom source is any HTTP folder - a company file server, a
+/// private GitHub repo's raw folder - where each font lives as
+/// `{base}/{file_name}`.
+#[derive(Debug, Clone, PartialEq, Eq)]
+pub enum FontSource {
+    Community,
+    Custom(String),
+}
+
+impl FontSource {
+    /// Empty / whitespace input selects the community repository.
+    pub fn from_url(url: &str) -> Self {
+        match url.trim() {
+            "" => FontSource::Community,
+            trimmed => FontSource::Custom(trimmed.trim_end_matches('/').to_string()),
+        }
+    }
+}
+
+/// One file listed in the community folder.
+#[derive(Debug, Clone, PartialEq)]
+pub struct RepoFont {
+    pub name: String,
+    pub download_url: String,
+}
+
+/// Referenced-but-unresolvable `.shx` font files across the document's text
+/// styles. Names are deduplicated case-insensitively and reduced to the bare
+/// file name (`C:\Fonts\VNArial.shx` → `VNArial.shx`).
+pub fn missing_shx_fonts(doc: &CadDocument) -> Vec<String> {
+    let mut missing: Vec<String> = Vec::new();
+    let base = doc
+        .source_path
+        .as_deref()
+        .map(Path::new)
+        .and_then(|p| p.parent());
+    for style in doc.text_styles.iter() {
+        let file = style.font_file.trim();
+        if file.is_empty() || !file.to_ascii_lowercase().ends_with(".shx") {
+            continue;
+        }
+        let resolved = crate::io::resolve_image_file(file, base).is_some()
+            || local_font_file(file).is_some();
+        if resolved {
+            continue;
+        }
+        let name = file.rsplit(['/', '\\']).next().unwrap_or(file).to_string();
+        if !missing.iter().any(|m| m.eq_ignore_ascii_case(&name)) {
+            missing.push(name);
+        }
+    }
+    missing.sort_by_key(|name| name.to_ascii_lowercase());
+    missing
+}
+
+/// A font file previously downloaded into the local fonts directory, matched
+/// case-insensitively by file name.
+pub fn local_font_file(name: &str) -> Option<PathBuf> {
+    let file = name.rsplit(['/', '\\']).next()?;
+    let dir = fonts_dir()?;
+    let direct = dir.join(file);
+    if direct.is_file() {
+        return Some(direct);
+    }
+    let lower = file.to_ascii_lowercase();
+    std::fs::read_dir(&dir)
+        .ok()?
+        .filter_map(|entry| entry.ok())
+        .find(|entry| entry.file_name().to_string_lossy().to_ascii_lowercase() == lower)
+        .map(|entry| entry.path())
+}
+
+/// List the community folder through the GitHub contents API.
+fn fetch_repo_fonts() -> Result<Vec<RepoFont>, String> {
+    let agent = crate::network::agent(std::time::Duration::from_secs(15));
+    let mut response = agent
+        .get(REPO_API_URL)
+        .header("User-Agent", concat!("OpenCADStudio/", env!("OCS_APP_VERSION")))
+        .header("Accept", "application/vnd.github+json")
+        .call()
+        .map_err(|e| format!("Could not reach the font repository: {e}"))?;
+    let body = response
+        .body_mut()
+        .read_to_string()
+        .map_err(|e| format!("Could not read the font repository listing: {e}"))?;
+    parse_contents(&body)
+}
+
+/// Parse the GitHub contents-API response:
+/// `[{"name":"romans.shx","download_url":"https://…"}, …]`.
+fn parse_contents(body: &str) -> Result<Vec<RepoFont>, String> {
+    let value: serde_json::Value =
+        serde_json::from_str(body).map_err(|e| format!("Unexpected font listing: {e}"))?;
+    let items = value
+        .as_array()
+        .ok_or_else(|| "Unexpected font-repository response.".to_string())?;
+    Ok(items
+        .iter()
+        .filter_map(|item| {
+            let name = item.get("name")?.as_str()?.to_string();
+            let url = item.get("download_url")?.as_str()?.to_string();
+            (!name.is_empty() && !url.is_empty()).then_some(RepoFont {
+                name,
+                download_url: url,
+            })
+        })
+        .collect())
+}
+
+/// Download every `missing` font that exists in the community folder into the
+/// local fonts directory. Returns the (requested, saved-path) pairs that were
+/// actually fetched; names absent from the repository are skipped.
+pub fn download_fonts(
+    missing: &[String],
+    source: &FontSource,
+) -> Result<Vec<(String, PathBuf)>, String> {
+    if missing.is_empty() {
+        return Ok(Vec::new());
+    }
+    let repo = match source {
+        FontSource::Community => Some(fetch_repo_fonts()?),
+        FontSource::Custom(_) => None,
+    };
+    let dir = fonts_dir().ok_or_else(|| "Could not resolve the fonts folder.".to_string())?;
+    std::fs::create_dir_all(&dir).map_err(|e| format!("Could not create {}: {e}", dir.display()))?;
+    let mut downloaded = Vec::new();
+    for want in missing {
+        let file = want.rsplit(['/', '\\']).next().unwrap_or(want);
+        let url = match (source, repo.as_ref()) {
+            // Community: download URLs come from the listing, matched by name.
+            (FontSource::Community, Some(repo)) => {
+                let lower = file.to_ascii_lowercase();
+                repo.iter()
+                    .find(|f| f.name.to_ascii_lowercase() == lower)
+                    .map(|f| f.download_url.clone())
+            }
+            // Custom folder: the font is simply `{base}/{file_name}`; a miss
+            // (404) is skipped without failing the batch.
+            (FontSource::Custom(base), _) => {
+                Some(format!("{base}/{}", percent_encode_path(file)))
+            }
+            (FontSource::Community, None) => None,
+        };
+        let Some(url) = url else { continue };
+        let agent = crate::network::agent(std::time::Duration::from_secs(30));
+        let mut response = agent
+            .get(&url)
+            .header("User-Agent", concat!("OpenCADStudio/", env!("OCS_APP_VERSION")))
+            .call()
+            .map_err(|e| format!("Could not download {file}: {e}"))?;
+        if response.status() != 200 {
+            continue;
+        }
+        let mut bytes = Vec::new();
+        response
+            .body_mut()
+            .as_reader()
+            .read_to_end(&mut bytes)
+            .map_err(|e| format!("Could not download {file}: {e}"))?;
+        if bytes.is_empty() {
+            continue;
+        }
+        let dest = dir.join(file);
+        std::fs::write(&dest, &bytes)
+            .map_err(|e| format!("Could not save {}: {e}", dest.display()))?;
+        downloaded.push((file.to_string(), dest));
+    }
+    Ok(downloaded)
+}
+
+/// Escape path characters that would break a URL (spaces and non-ASCII file
+/// names are common in font sets).
+fn percent_encode_path(file: &str) -> String {
+    let mut out = String::with_capacity(file.len());
+    for byte in file.bytes() {
+        match byte {
+            b'A'..=b'Z' | b'a'..=b'z' | b'0'..=b'9' | b'-' | b'_' | b'.' | b'~' => {
+                out.push(byte as char)
+            }
+            _ => out.push_str(&format!("%{byte:02X}")),
+        }
+    }
+    out
+}
+
+#[cfg(test)]
+mod tests {
+    use super::*;
+
+    #[test]
+    fn parses_the_github_contents_listing() {
+        let body = r#"[
+            {"name":"romans.shx","path":"fonts/romans.shx",
+             "download_url":"https://raw.githubusercontent.com/x/y/main/fonts/romans.shx","type":"file"},
+            {"name":"subset","path":"fonts/subset","type":"dir"},
+            {"name":"no-url.shx","path":"fonts/no-url.shx","type":"file"}
+        ]"#;
+        let fonts = parse_contents(body).unwrap();
+        assert_eq!(fonts.len(), 1);
+        assert_eq!(fonts[0].name, "romans.shx");
+        assert!(fonts[0].download_url.ends_with("/fonts/romans.shx"));
+    }
+
+    #[test]
+    fn custom_source_urls_are_trimmed_and_encoded() {
+        assert_eq!(FontSource::from_url(""), FontSource::Community);
+        assert_eq!(
+            FontSource::from_url("  https://intra/fonts/  "),
+            FontSource::Custom("https://intra/fonts".into())
+        );
+        assert_eq!(percent_encode_path("vn 30f.shx"), "vn%2030f.shx");
+    }
+
+    #[test]
+    fn rejects_a_non_listing_response() {
+        assert!(parse_contents("{\"message\":\"Not Found\"}").is_err());
+    }
+
+    #[test]
+    fn missing_fonts_deduplicate_by_name_case_insensitively() {
+        // Two styles referencing the same missing font with different casing
+        // and one whose file resolves next to the drawing must yield one hit.
+        let dir = std::env::temp_dir().join("ocs_font_repo_tests");
+        std::fs::create_dir_all(&dir).unwrap();
+        std::fs::write(dir.join("exists.shx"), b"stub").unwrap();
+        let mut doc = CadDocument::new();
+        let mk = |name: &str, file: &str| {
+            let mut style = acadrust::TextStyle::new(name);
+            style.font_file = file.into();
+            style
+        };
+        let _ = doc.text_styles.add(mk("A", "MISSING1.shx"));
+        let _ = doc.text_styles.add(mk("B", "missing1.SHX"));
+        let _ = doc.text_styles.add(mk("C", "exists.shx"));
+        doc.source_path = Some(dir.join("drawing.dwg").to_string_lossy().into_owned());
+        let missing = missing_shx_fonts(&doc);
+        assert_eq!(missing, vec!["MISSING1.shx".to_string()]);
+        let _ = std::fs::remove_file(dir.join("exists.shx"));
+    }
+}

src/io/mod.rs

@@ -4,9 +4,11 @@
 // Default save format: DWG (AC1032 / R2018+).
 
 pub mod file_association;
+pub mod font_repo;
 #[cfg(not(target_arch = "wasm32"))]
 pub mod edit_lock;
 pub mod obj;
+pub mod ole_embed;
 #[cfg(not(target_arch = "wasm32"))]
 pub mod single_instance;
 pub mod pdf_export;
@@ -1554,6 +1556,23 @@ pub async fn pick_image_file() -> Result<(PathBuf, u32, u32), String> {
     Ok((path, w, h))
 }
 
+/// Pick an image file and prepare it for embedding (IMAGEEMBED). The bytes
+/// are read before returning so the OLE2FRAME payload is ready to place.
+pub async fn pick_embedded_image_file() -> Result<ole_embed::EmbeddedImage, String> {
+    let handle = crate::sys::file_dialog()
+        .set_title(crate::t!("Select Image File").as_ref())
+        .add_filter(crate::t!("Images").as_ref(), &["png", "jpg", "jpeg", "bmp", "tiff", "tif"])
+        .add_filter(crate::t!("PNG").as_ref(), &["png"])
+        .add_filter(crate::t!("JPEG").as_ref(), &["jpg", "jpeg"])
+        .add_filter(crate::t!("All Files").as_ref(), &["*"])
+        .pick_file()
+        .await
+        .ok_or_else(|| "Cancelled".to_string())?;
+    let name = handle.file_name();
+    let bytes = handle.read().await;
+    ole_embed::EmbeddedImage::from_bytes(name, bytes)
+}
+
 /// Save `doc` to `path` with the given DXF version, overriding `doc.version`.
 /// Format is auto-detected from the extension (dwg / dxf).
 pub fn save_as_version(

src/io/ole_embed.rs

@@ -0,0 +1,261 @@
+// Embed a raster image inside the drawing itself as an OLE2FRAME entity.
+//
+// The IMAGE mechanism (RasterImage + ImageDefinition) stores only a file path,
+// so a drawing copied to another machine loses its pictures. An OLE2FRAME
+// instead carries the encoded raster inside an OLE compound file embedded in
+// the entity data — the same mechanism AutoCAD uses for pasted pictures — so
+// the .dwg is self-contained. cadcodec both builds the compound storage and
+// reads it back, and the renderer already paints OLE2FRAMEs via
+// ImageModel::from_ole2frame, so this module only packs and unpacks.
+
+use std::io::Write as _;
+use std::path::Path;
+
+use acadrust::compound_file::{
+    BinaryRecord, CompoundEntry, CompoundFile, CompoundStorage, CompoundStream,
+    CompoundStreamContent, StructuredStoragePayload,
+};
+use acadrust::entities::{Ole2Frame, OleFrameEnvelope, OleObjectType};
+use acadrust::types::Vector3;
+
+/// OLE compound-file stream holding OLE 1.0 native data. cadcodec's
+/// presentation extractor looks here first; the body is the encoded raster
+/// behind a 4-byte little-endian length.
+const OLE10NATIVE: &str = "\u{1}Ole10Native";
+/// Leading header marker carried verbatim by the geometry envelope; readers
+/// use it to recognise the envelope around the compound file.
+const GEOMETRY_MARKER: u16 = 1;
+/// Encoded formats the extractor recognises by magic and every DWG consumer
+/// can decode. Anything else is re-encoded as PNG before embedding.
+const PORTABLE_FORMATS: [image::ImageFormat; 3] = [
+    image::ImageFormat::Png,
+    image::ImageFormat::Jpeg,
+    image::ImageFormat::Bmp,
+];
+
+/// A raster image prepared for embedding: encoded bytes plus the metadata the
+/// placement prompts need.
+#[derive(Clone, Debug, PartialEq)]
+pub struct EmbeddedImage {
+    /// Encoded raster bytes (PNG / JPEG / BMP as stored or re-encoded).
+    pub bytes: Vec<u8>,
+    pub pixel_width: u32,
+    pub pixel_height: u32,
+    /// File name the picture came from — surfaces in prompts and properties.
+    pub name: String,
+}
+
+impl EmbeddedImage {
+    /// Prepare an image file for embedding. Recognised raster formats are
+    /// stored as-is; anything else is decoded and re-encoded as PNG so the
+    /// payload always stays renderable.
+    pub fn from_file(path: &Path) -> Result<Self, String> {
+        let bytes = std::fs::read(path).map_err(|e| e.to_string())?;
+        let name = path
+            .file_name()
+            .and_then(|n| n.to_str())
+            .unwrap_or("image")
+            .to_string();
+        Self::from_bytes(name, bytes)
+    }
+
+    /// Prepare already-read image bytes for embedding (web file handles).
+    pub fn from_bytes(name: String, bytes: Vec<u8>) -> Result<Self, String> {
+        let format = image::guess_format(&bytes).map_err(|e| e.to_string())?;
+        let encoded = if PORTABLE_FORMATS.contains(&format) {
+            bytes
+        } else {
+            encode_png(&bytes)?
+        };
+        let img = image::load_from_memory(&encoded).map_err(|e| e.to_string())?;
+        let (pixel_width, pixel_height) = image::GenericImageView::dimensions(&img);
+        Ok(Self {
+            bytes: encoded,
+            pixel_width,
+            pixel_height,
+            name,
+        })
+    }
+
+    /// Width : height aspect ratio; a degenerate height falls back to square.
+    pub fn aspect(&self) -> f64 {
+        if self.pixel_height == 0 {
+            1.0
+        } else {
+            self.pixel_width as f64 / self.pixel_height as f64
+        }
+    }
+}
+
+fn encode_png(bytes: &[u8]) -> Result<Vec<u8>, String> {
+    let img = image::load_from_memory(bytes).map_err(|e| e.to_string())?;
+    let mut png = std::io::Cursor::new(Vec::new());
+    img.write_to(&mut png, image::ImageFormat::Png)
+        .map_err(|e| e.to_string())?;
+    Ok(png.into_inner())
+}
+
+/// World-space corners for a picture placed with its bottom-left corner at
+/// `origin`, extending `width` right and `width / aspect` up — the same
+/// rectangle the IMAGE command previews.
+pub fn corners_from_placement(origin: Vector3, width: f64, aspect: f64) -> (Vector3, Vector3) {
+    let width = width.max(1e-6);
+    let height = width / aspect.max(1e-6);
+    (
+        Vector3::new(origin.x, origin.y + height, origin.z),
+        Vector3::new(origin.x + width, origin.y, origin.z),
+    )
+}
+
+/// Pack `image` into an OLE2FRAME spanning `upper_left` → `lower_right` in
+/// world space. The picture rides in an `\x01Ole10Native` stream as OLE 1.0
+/// native data behind the geometry envelope cadcodec writes around it.
+pub fn build_embedded_ole(
+    image: &EmbeddedImage,
+    upper_left: Vector3,
+    lower_right: Vector3,
+) -> Ole2Frame {
+    // OLE 1.0 native: 4-byte little-endian payload length, then the raster.
+    let mut native = Vec::with_capacity(4 + image.bytes.len());
+    let _ = native.write(&(image.bytes.len() as u32).to_le_bytes());
+    native.extend_from_slice(&image.bytes);
+
+    let file = CompoundFile {
+        minor_version: 0x003E,
+        major_version: 3,
+        transaction_signature: 0,
+        root: CompoundStorage {
+            name: "Root Entry".to_string(),
+            class_id: [0; 16],
+            state_bits: 0,
+            creation_time: 0,
+            modified_time: 0,
+            entries: vec![CompoundEntry::Stream(CompoundStream {
+                name: OLE10NATIVE.to_string(),
+                class_id: [0; 16],
+                state_bits: 0,
+                creation_time: 0,
+                modified_time: 0,
+                content: CompoundStreamContent::Binary(BinaryRecord::split(&native, 4096)),
+            })],
+        },
+    };
+
+    let mut ole = Ole2Frame::new();
+    ole.ole_object_type = OleObjectType::Embedded;
+    ole.source_application = "OpenCADStudio".to_string();
+    ole.upper_left_corner = upper_left;
+    ole.lower_right_corner = lower_right;
+    ole.envelope = OleFrameEnvelope::Geometry {
+        marker: GEOMETRY_MARKER,
+        extension_records: Vec::new(),
+    };
+    ole.storage = StructuredStoragePayload {
+        leading_records: Vec::new(),
+        compound_file: Some(file),
+        trailing_records: Vec::new(),
+    };
+    ole
+}
+
+/// Non-interactive embed used by the control API: add the entity to `doc` and
+/// return its handle. The undo snapshot is the caller's responsibility.
+pub fn add_embedded_image(
+    doc: &mut acadrust::CadDocument,
+    image: &EmbeddedImage,
+    origin: Vector3,
+    width: f64,
+) -> Result<acadrust::Handle, String> {
+    let (upper_left, lower_right) = corners_from_placement(origin, width, image.aspect());
+    let ole = build_embedded_ole(image, upper_left, lower_right);
+    doc.add_entity(acadrust::EntityType::Ole2Frame(ole))
+        .map_err(|e| e.to_string())
+}
+
+#[cfg(test)]
+mod tests {
+    use super::*;
+
+    /// Minimal valid PNG: a solid-colour 4×3 image through the `image` crate.
+    fn png_bytes(width: u32, height: u32) -> Vec<u8> {
+        let img = image::RgbaImage::from_pixel(width, height, image::Rgba([10, 20, 30, 255]));
+        let mut png = std::io::Cursor::new(Vec::new());
+        img.write_to(&mut png, image::ImageFormat::Png).unwrap();
+        png.into_inner()
+    }
+
+    #[test]
+    fn from_bytes_keeps_png_and_measures_pixels() {
+        let embedded = EmbeddedImage::from_bytes("t.png".into(), png_bytes(4, 3)).unwrap();
+        assert_eq!(embedded.pixel_width, 4);
+        assert_eq!(embedded.pixel_height, 3);
+        assert_eq!(embedded.bytes, png_bytes(4, 3));
+    }
+
+    #[test]
+    fn from_bytes_reencodes_foreign_formats_as_png() {
+        // TIFF starts with II*/MM* and is not in the portable set, so it must
+        // come back re-encoded as PNG.
+        let img = image::RgbaImage::from_pixel(2, 2, image::Rgba([1, 2, 3, 255]));
+        let mut tiff = std::io::Cursor::new(Vec::new());
+        img.write_to(&mut tiff, image::ImageFormat::Tiff).unwrap();
+        let embedded = EmbeddedImage::from_bytes("t.tif".into(), tiff.into_inner()).unwrap();
+        assert!(embedded.bytes.starts_with(&[0x89, b'P', b'N', b'G']));
+    }
+
+    #[test]
+    fn packed_payload_roundtrips_through_the_extractor() {
+        let png = png_bytes(4, 3);
+        let image = EmbeddedImage {
+            bytes: png.clone(),
+            pixel_width: 4,
+            pixel_height: 3,
+            name: "t.png".into(),
+        };
+        let ole = build_embedded_ole(
+            &image,
+            Vector3::new(0.0, 3.0, 0.0),
+            Vector3::new(4.0, 0.0, 0.0),
+        );
+        let payload = ole.encoded_payload();
+        match acadrust::entities::extract_presentation(&payload) {
+            Some(acadrust::entities::OlePresentation::Raster(bytes)) => assert_eq!(bytes, png),
+            other => panic!("expected the embedded raster back, got {other:?}"),
+        }
+    }
+
+    #[test]
+    fn dwg_roundtrip_preserves_the_embedded_picture() {
+        let png = png_bytes(4, 3);
+        let image = EmbeddedImage {
+            bytes: png.clone(),
+            pixel_width: 4,
+            pixel_height: 3,
+            name: "t.png".into(),
+        };
+        let mut doc = acadrust::CadDocument::new();
+        let handle =
+            add_embedded_image(&mut doc, &image, Vector3::new(10.0, 10.0, 0.0), 20.0).unwrap();
+
+        let dir = std::env::temp_dir().join("ocs_ole_embed_tests");
+        std::fs::create_dir_all(&dir).unwrap();
+        let path = dir.join("embedded_roundtrip.dwg");
+        acadrust::DwgWriter::write_to_file(&path, &doc).unwrap();
+
+        let mut reader = acadrust::io::dwg::DwgReader::from_file(&path).unwrap();
+        let reopened = reader.read().unwrap();
+        std::fs::remove_file(&path).ok();
+
+        let ole = match reopened.get_entity(handle) {
+            Some(acadrust::EntityType::Ole2Frame(ole)) => ole,
+            other => panic!("expected the Ole2Frame back, got {other:?}"),
+        };
+        // Corners survive: 20 wide at aspect 4:3 → 15 tall, base at (10,10).
+        assert_eq!(ole.lower_right_corner, Vector3::new(30.0, 10.0, 0.0));
+        assert_eq!(ole.upper_left_corner, Vector3::new(10.0, 25.0, 0.0));
+        match acadrust::entities::extract_presentation(&ole.encoded_payload()) {
+            Some(acadrust::entities::OlePresentation::Raster(bytes)) => assert_eq!(bytes, png),
+            other => panic!("expected the embedded raster back, got {other:?}"),
+        }
+    }
+}

src/io/pdf_export.rs

@@ -375,7 +375,7 @@ fn image_triangle_matrix(p: [[f32; 2]; 3], uv: [[f32; 2]; 3]) -> Option<[f32; 6]
 /// The parent comes from `iced::window::run`, keeping the portal request tied
 /// to the visible app window on Wayland instead of silently resolving to
 /// `None` on desktops that reject a parentless save dialog (#537).
-#[cfg(not(target_arch = "wasm32"))]
+#[cfg(all(not(target_arch = "wasm32"), not(target_os = "windows")))]
 pub fn pick_pdf_path_owned(
     stem: String,
     parent: &dyn iced::window::Window,
@@ -392,6 +392,25 @@ pub fn pick_pdf_path_owned(
     Some(path)
 }
 
+/// Windows: pick the PDF destination with the async dialog on a worker
+/// thread. The parented blocking dialog ran `IFileDialog::Show` on the UI
+/// thread inside the window callback, and when the target name already
+/// existed the overwrite-confirmation popup is a second nested modal that
+/// never gets pumped there — the app froze instead of asking. The async
+/// backend runs the dialog off-thread; it is the same pattern the DWG
+/// Save As flow uses, whose confirm popup works.
+#[cfg(all(not(target_arch = "wasm32"), target_os = "windows"))]
+pub async fn pick_pdf_path_async(stem: String) -> Option<std::path::PathBuf> {
+    let handle = crate::sys::file_dialog()
+        .set_title(crate::t!("Export as PDF").as_ref())
+        .set_file_name(format!("{stem}.pdf"))
+        .add_filter(crate::t!("PDF Files").as_ref(), &["pdf"])
+        .add_filter(crate::t!("All Files").as_ref(), &["*"])
+        .save_file()
+        .await?;
+    Some(crate::sys::handle_path(&handle))
+}
+
 // ── PDF builder ───────────────────────────────────────────────────────────
 
 #[cfg(not(target_arch = "wasm32"))]

src/io/print_to_printer.rs

@@ -103,11 +103,30 @@ pub fn list_printers() -> Vec<String> {
 
 #[cfg(target_os = "windows")]
 fn windows_printers() -> std::io::Result<Vec<String>> {
-    use windows_sys::Win32::Foundation::{GetLastError, ERROR_INSUFFICIENT_BUFFER};
     use windows_sys::Win32::Graphics::Printing::{
-        EnumPrintersW, PRINTER_ENUM_CONNECTIONS, PRINTER_ENUM_LOCAL,
+        PRINTER_ENUM_CONNECTIONS, PRINTER_ENUM_LOCAL, PRINTER_ENUM_NETWORK,
     };
 
+    let mut names = enumerate_printers(PRINTER_ENUM_LOCAL | PRINTER_ENUM_CONNECTIONS)?;
+    // LOCAL|CONNECTIONS misses network-discovered printers (spooler-shared and
+    // per-machine connections), which is what "the plot dialog lost printers"
+    // reports look like. A second NETWORK-augmented pass can only widen the
+    // list: when the spooler rejects the extra flag it just yields nothing.
+    if let Ok(extra) =
+        enumerate_printers(PRINTER_ENUM_LOCAL | PRINTER_ENUM_CONNECTIONS | PRINTER_ENUM_NETWORK)
+    {
+        names.extend(extra);
+        names.sort();
+        names.dedup();
+    }
+    Ok(names)
+}
+
+#[cfg(target_os = "windows")]
+fn enumerate_printers(flags: u32) -> std::io::Result<Vec<String>> {
+    use windows_sys::Win32::Foundation::{GetLastError, ERROR_INSUFFICIENT_BUFFER};
+    use windows_sys::Win32::Graphics::Printing::EnumPrintersW;
+
     let mut bytes_needed = 0;
     let mut printer_count = 0;
     let mut buffer = Vec::<usize>::new();
@@ -124,7 +143,7 @@ fn windows_printers() -> std::io::Result<Vec<String>> {
         // aligned, writable allocation of buffer_bytes bytes.
         let success = unsafe {
             EnumPrintersW(
-                PRINTER_ENUM_LOCAL | PRINTER_ENUM_CONNECTIONS,
+                flags,
                 std::ptr::null(),
                 4,
                 data,
@@ -305,6 +324,297 @@ pub fn print_existing_pdf(path: &std::path::Path, opts: &PrintOptions) -> Result
     dispatch_to_printer_opts(path, opts)
 }
 
+/// Raster resolution for the GDI fallback print. 300 DPI balances spool
+/// memory (a 297mm-wide page is ~3.5k pixels) against readable linework; the
+/// on-screen rasteriser runs at 150 DPI, which looks soft on paper.
+#[cfg(target_os = "windows")]
+const GDI_PRINT_DPI: f32 = 300.0;
+
+/// Print by rasterising the PDF in-process (hayro) and drawing the bitmap to
+/// the printer DC with GDI. Needs no PDF application — the ShellExecute verb
+/// path only works when the registered PDF viewer exposes `print`/`printto`,
+/// and many (Edge, store readers like ASC.Pdf) register only `open`.
+/// Rotate a top-down RGBA raster 90° clockwise (width and height swap).
+#[cfg(target_os = "windows")]
+fn rotate_rgba90(pixels: &[u8], width: u32, height: u32) -> Vec<u8> {
+    let mut rotated = vec![0u8; pixels.len()];
+    for y in 0..height as usize {
+        for x in 0..width as usize {
+            let src = (y * width as usize + x) * 4;
+            // Clockwise: destination column = height-1-y, row = x.
+            let dst = (x * height as usize + (height as usize - 1 - y)) * 4;
+            rotated[dst..dst + 4].copy_from_slice(&pixels[src..src + 4]);
+        }
+    }
+    rotated
+}
+
+/// Fetch the printer driver's DEVMODE and flip its orientation to match the
+/// plot's aspect (`landscape` = image wider than tall). The merged DEVMODE is
+/// returned as raw bytes (drivers append private data after the struct).
+/// `None` when the driver could not be queried — CreateDC then falls back to
+/// the driver default.
+#[cfg(target_os = "windows")]
+fn oriented_printer_devmode(device_wide: &[u16], landscape: bool) -> Option<Vec<u8>> {
+    use windows_sys::Win32::Graphics::Gdi::{
+        DEVMODEW, DM_IN_BUFFER, DM_ORIENTATION, DM_OUT_BUFFER, DMORIENT_LANDSCAPE,
+        DMORIENT_PORTRAIT,
+    };
+    use windows_sys::Win32::Graphics::Printing::{
+        ClosePrinter, DocumentPropertiesW, OpenPrinterW, PRINTER_HANDLE,
+    };
+    unsafe {
+        let mut handle = PRINTER_HANDLE::default();
+        if OpenPrinterW(device_wide.as_ptr(), &mut handle, std::ptr::null()) == 0 {
+            return None;
+        }
+        let result = (|| {
+            let needed = DocumentPropertiesW(
+                std::ptr::null_mut(),
+                handle,
+                device_wide.as_ptr(),
+                std::ptr::null_mut(),
+                std::ptr::null(),
+                DM_OUT_BUFFER,
+            );
+            if needed <= 0 {
+                return None;
+            }
+            let mut buf = vec![0u8; needed as usize];
+            let dm = buf.as_mut_ptr() as *mut DEVMODEW;
+            if DocumentPropertiesW(
+                std::ptr::null_mut(),
+                handle,
+                device_wide.as_ptr(),
+                dm,
+                std::ptr::null(),
+                DM_OUT_BUFFER,
+            ) <= 0
+            {
+                return None;
+            }
+            (*dm).dmSize = std::mem::size_of::<DEVMODEW>() as u16;
+            (*dm).dmFields |= DM_ORIENTATION;
+            (*dm).Anonymous1.Anonymous1.dmOrientation = if landscape {
+                DMORIENT_LANDSCAPE as i16
+            } else {
+                DMORIENT_PORTRAIT as i16
+            };
+            // Let the driver reconcile fields that depend on orientation
+            // (paper dimensions, imageable area) before we print with it.
+            if DocumentPropertiesW(
+                std::ptr::null_mut(),
+                handle,
+                device_wide.as_ptr(),
+                dm,
+                dm,
+                DM_IN_BUFFER | DM_OUT_BUFFER,
+            ) <= 0
+            {
+                return None;
+            }
+            Some(buf)
+        })();
+        ClosePrinter(handle);
+        result
+    }
+}
+
+#[cfg(target_os = "windows")]
+fn gdi_raster_print(
+    path: &std::path::Path,
+    printer: Option<&str>,
+    copies: u32,
+    output_file: Option<&std::path::Path>,
+) -> Result<(), String> {
+    use std::os::windows::ffi::OsStrExt;
+    use windows_sys::Win32::Graphics::Gdi::{
+        CreateDCW, DeleteDC, GetDeviceCaps, SetStretchBltMode, StretchDIBits, BITMAPINFO,
+        BITMAPINFOHEADER, BI_RGB, COLORONCOLOR, DIB_RGB_COLORS, DEVMODEW, HORZRES, SRCCOPY,
+        VERTRES,
+    };
+    // windows-sys 0.61 groups the spooler-document calls (StartDoc/StartPage/
+    // EndPage/EndDoc/DOCINFOW) under Storage::Xps, not Graphics::Gdi.
+    use windows_sys::Win32::Graphics::Printing::GetDefaultPrinterW;
+    use windows_sys::Win32::Storage::Xps::{EndDoc, EndPage, StartDocW, StartPage, DOCINFOW};
+
+    let wide = |s: &str| -> Vec<u16> { std::ffi::OsStr::new(s).encode_wide().chain(Some(0)).collect() };
+
+    // Resolve the target device: the named printer or the Windows default.
+    let device = match printer.map(str::trim).filter(|p| !p.is_empty()) {
+        Some(name) => name.to_string(),
+        None => {
+            let mut needed = 0u32;
+            // SAFETY: first call queries the size, second writes into a
+            // buffer of exactly that size.
+            unsafe { GetDefaultPrinterW(std::ptr::null_mut(), &mut needed) };
+            if needed == 0 {
+                return Err("No default printer is configured on Windows.".into());
+            }
+            let mut buf = vec![0u16; needed as usize];
+            if unsafe { GetDefaultPrinterW(buf.as_mut_ptr(), &mut needed) } == 0 {
+                return Err(format!(
+                    "Could not query the default printer (code {}).",
+                    unsafe { windows_sys::Win32::Foundation::GetLastError() }
+                ));
+            }
+            String::from_utf16_lossy(&buf[..buf.iter().position(|&u| u == 0).unwrap_or(0)])
+        }
+    };
+
+    let page = crate::scene::model::pdf_raster::rasterize_page_at_dpi(
+        &path.to_string_lossy(),
+        "1",
+        GDI_PRINT_DPI,
+    )
+    .ok_or_else(|| "Could not rasterise the plot for direct printing.".to_string())?;
+
+    let winspool = wide("WINSPOOL");
+    let device_wide = wide(&device);
+    // The dialog's Landscape/Portrait choice rides in through the DEVMODE:
+    // the sheet in the raster decides, and the driver's default must not
+    // override it (a landscape plot into a portrait page used to shrink and
+    // misorient the output).
+    let dm_buf = oriented_printer_devmode(&device_wide, page.width > page.height);
+    let init = dm_buf
+        .as_ref()
+        .map(|b| b.as_ptr().cast::<DEVMODEW>())
+        .unwrap_or(std::ptr::null());
+    // SAFETY: all pointers are NUL-terminated / valid for the call; the DC is
+    // released below and dm_buf outlives it.
+    let hdc = unsafe {
+        CreateDCW(winspool.as_ptr(), device_wide.as_ptr(), std::ptr::null(), init)
+    };
+    if hdc.is_null() {
+        return Err(format!("Could not open printer \"{device}\" for printing."));
+    }
+
+    let result = (|| -> Result<(), String> {
+        // SAFETY: hdc is a valid printer DC; each capability is a documented index.
+        let (page_w, page_h) =
+            unsafe { (GetDeviceCaps(hdc, HORZRES as i32), GetDeviceCaps(hdc, VERTRES as i32)) };
+        if page_w <= 0 || page_h <= 0 {
+            return Err("Printer reported no printable area.".into());
+        }
+
+        // BGRA, top-down — what StretchDIBits expects for BI_RGB 32bpp.
+        let mut bgra = page.pixels.as_ref().clone();
+        for px in bgra.chunks_exact_mut(4) {
+            px.swap(0, 2);
+        }
+
+        let mut src_w = page.width;
+        let mut src_h = page.height;
+        // Drivers whose DEVMODE could not be set (v4 class drivers may fail
+        // the DocumentProperties query) keep their default orientation. When
+        // that mismatches the plot sheet, rotating the raster 90° keeps the
+        // plot at full size on the page instead of shrinking it to fit.
+        if (page_w > page_h) != (src_w > src_h) {
+            bgra = rotate_rgba90(&bgra, src_w, src_h);
+            std::mem::swap(&mut src_w, &mut src_h);
+        }
+
+        // Fit inside the printable area, preserving the page's aspect ratio.
+        let fit_w = f64::from(page_w) / f64::from(src_w);
+        let fit_h = f64::from(page_h) / f64::from(src_h);
+        let scale = fit_w.min(fit_h);
+        let draw_w = (f64::from(src_w) * scale).max(1.0) as i32;
+        let draw_h = (f64::from(src_h) * scale).max(1.0) as i32;
+        let x = (page_w - draw_w) / 2;
+        let y = (page_h - draw_h) / 2;
+
+        let doc_name = wide("OpenCADStudio Plot");
+        // An optional redirect writes the spooled output to a file instead of
+        // the physical tray — how "Microsoft Print to PDF" prints silently,
+        // and how the fallback proves itself in tests without wasting paper.
+        let redirect = output_file.map(|p| wide(&p.to_string_lossy()));
+        let info = DOCINFOW {
+            cbSize: std::mem::size_of::<DOCINFOW>() as i32,
+            lpszDocName: doc_name.as_ptr(),
+            lpszOutput: redirect
+                .as_ref()
+                .map(|w| w.as_ptr())
+                .unwrap_or(std::ptr::null()),
+            lpszDatatype: std::ptr::null(),
+            fwType: 0,
+        };
+        // SAFETY: info and its strings outlive every StartDoc/EndDoc call here.
+        if unsafe { StartDocW(hdc, &info) } <= 0 {
+            return Err(format!(
+                "Print job could not start (code {}).",
+                unsafe { windows_sys::Win32::Foundation::GetLastError() }
+            ));
+        }
+        unsafe { SetStretchBltMode(hdc, COLORONCOLOR) };
+        let mut bmi = BITMAPINFO {
+            bmiHeader: BITMAPINFOHEADER {
+                biSize: std::mem::size_of::<BITMAPINFOHEADER>() as u32,
+                biWidth: src_w as i32,
+                // Negative height: top-down rows, no vertical flip needed.
+                biHeight: -(src_h as i32),
+                biPlanes: 1,
+                biBitCount: 32,
+                biCompression: BI_RGB,
+                biSizeImage: bgra.len() as u32,
+                ..Default::default()
+            },
+            bmiColors: [Default::default()],
+        };
+        for _ in 0..copies.max(1) {
+            if unsafe { StartPage(hdc) } <= 0 {
+                return Err(format!(
+                    "Could not start a print page (code {}).",
+                    unsafe { windows_sys::Win32::Foundation::GetLastError() }
+                ));
+            }
+            // StartPage resets DC attributes, so the stretch mode is set per page.
+            unsafe { SetStretchBltMode(hdc, COLORONCOLOR) };
+            let drawn = unsafe {
+                StretchDIBits(
+                    hdc,
+                    x,
+                    y,
+                    draw_w,
+                    draw_h,
+                    0,
+                    0,
+                    src_w as i32,
+                    src_h as i32,
+                    bgra.as_ptr().cast(),
+                    &mut bmi,
+                    DIB_RGB_COLORS,
+                    SRCCOPY,
+                )
+            };
+            // Failure returns GDI_ERROR (-1); a successful draw returns the
+            // source height it copied (>= 0, 0 only for zero-height pages).
+            if drawn < 0 {
+                return Err(format!(
+                    "Drawing to the printer failed (code {}).",
+                    unsafe { windows_sys::Win32::Foundation::GetLastError() }
+                ));
+            }
+            if unsafe { EndPage(hdc) } <= 0 {
+                return Err(format!(
+                    "Could not finish a print page (code {}).",
+                    unsafe { windows_sys::Win32::Foundation::GetLastError() }
+                ));
+            }
+        }
+        if unsafe { EndDoc(hdc) } <= 0 {
+            return Err(format!(
+                "Print job could not complete (code {}).",
+                unsafe { windows_sys::Win32::Foundation::GetLastError() }
+            ));
+        }
+        Ok(())
+    })();
+
+    // SAFETY: the DC was created above and used only on this thread.
+    unsafe { DeleteDC(hdc) };
+    result
+}
+
 /// Open a file with the OS default application (used for print preview).
 #[cfg(not(target_arch = "wasm32"))]
 pub fn open_in_viewer(path: &std::path::Path) -> Result<(), String> {
@@ -356,32 +666,51 @@ fn dispatch_to_printer_opts(
             _ => (wide("print"), None, "default printer".to_string()),
         };
         let params_ptr = params.as_ref().map(|v| v.as_ptr()).unwrap_or(std::ptr::null());
-        for _ in 0..opts.copies.max(1) {
+        let shell = (|| -> Result<String, String> {
-            let mut info = SHELLEXECUTEINFOW {
+            for _ in 0..opts.copies.max(1) {
-                cbSize: std::mem::size_of::<SHELLEXECUTEINFOW>() as u32,
+                let mut info = SHELLEXECUTEINFOW {
-                fMask: SEE_MASK_FLAG_NO_UI | SEE_MASK_NOASYNC,
+                    cbSize: std::mem::size_of::<SHELLEXECUTEINFOW>() as u32,
-                lpVerb: verb.as_ptr(),
+                    fMask: SEE_MASK_FLAG_NO_UI | SEE_MASK_NOASYNC,
-                lpFile: path_wide.as_ptr(),
+                    lpVerb: verb.as_ptr(),
-                lpParameters: params_ptr,
+                    lpFile: path_wide.as_ptr(),
-                nShow: SW_HIDE,
+                    lpParameters: params_ptr,
-                ..Default::default()
+                    nShow: SW_HIDE,
-            };
+                    ..Default::default()
-            if unsafe { ShellExecuteExW(&mut info) } == 0 {
-                let shell_code = info.hInstApp as usize;
-                let code = if (1..=32).contains(&shell_code) {
-                    shell_code as u32
-                } else {
-                    unsafe { GetLastError() }
                 };
-                if code == SE_ERR_NOASSOC || code == ERROR_NO_ASSOCIATION {
+                if unsafe { ShellExecuteExW(&mut info) } == 0 {
-                    return Err(
+                    let shell_code = info.hInstApp as usize;
-                        "Windows has no PDF application registered with Print support.".into(),
+                    let code = if (1..=32).contains(&shell_code) {
-                    );
+                        shell_code as u32
+                    } else {
+                        unsafe { GetLastError() }
+                    };
+                    if code == SE_ERR_NOASSOC || code == ERROR_NO_ASSOCIATION {
+                        return Err(
+                            "Windows has no PDF application registered with Print support.".into(),
+                        );
+                    }
+                    return Err(format!("Windows print dispatch failed (code {code})"));
                 }
-                return Err(format!("Windows print dispatch failed (code {code})"));
             }
+            Ok(label)
+        })();
+        if let Ok(sent) = shell {
+            return Ok(sent);
         }
-        Ok(label)
+        // Fallback: hand the page straight to the spooler through GDI, with no
+        // PDF application involved. Modern PDF readers (Edge, store apps)
+        // register only an `open` verb, which used to leave every plot
+        // failing with "no PDF application registered".
+        gdi_raster_print(path, opts.printer.as_deref(), opts.copies, None).map_err(|gdi| {
+            format!(
+                "{}; direct print fallback failed: {gdi}",
+                shell.err().unwrap_or_default()
+            )
+        })?;
+        Ok(opts
+            .printer
+            .clone()
+            .unwrap_or_else(|| "default printer".to_string()))
     }
 
     #[cfg(not(target_os = "windows"))]
@@ -459,7 +788,215 @@ fn dispatch_to_printer_opts(
 mod printer_properties_tests {
     use super::printer_properties_command;
 
+    /// The GDI fallback rasterises the plot PDF in-process; prove the 300 DPI
+    /// path yields a page sized for print rather than the screen's 150 DPI.
     #[cfg(target_os = "windows")]
+    #[test]
+    fn gdi_fallback_rasterises_the_plot_pdf_at_print_dpi() {
+        use printpdf::{Mm, PdfDocument, PdfPage as OutputPage, PdfSaveOptions};
+
+        let mut document = PdfDocument::new("gdi print test");
+        document
+            .pages
+            .push(OutputPage::new(Mm(210.0), Mm(148.0), Vec::new()));
+        let bytes = document.save(&PdfSaveOptions::default(), &mut Vec::new());
+        let path = std::env::temp_dir().join("ocs_gdi_print_probe.pdf");
+        std::fs::write(&path, &bytes).unwrap();
+
+        let page = crate::scene::model::pdf_raster::rasterize_page_at_dpi(
+            &path.to_string_lossy(),
+            "1",
+            super::GDI_PRINT_DPI,
+        )
+        .expect("plot PDF should rasterise");
+        let _ = std::fs::remove_file(&path);
+
+        assert_eq!(page.dpi, super::GDI_PRINT_DPI);
+        // 210mm at 300 DPI ≈ 2480 px, aspect 210:148.
+        assert!((page.width as f64 - 210.0 / 25.4 * 300.0).abs() < 2.0);
+        assert!((page.height as f64 - 148.0 / 25.4 * 300.0).abs() < 2.0);
+        assert_eq!(page.pixels.len(), page.width as usize * page.height as usize * 4);
+    }
+
+    /// Opening the printer DC and reading its printable area must work with
+    /// the device-name resolution the GDI fallback uses. No job is spooled.
+    #[cfg(target_os = "windows")]
+    #[test]
+    fn gdi_fallback_opens_a_printer_dc() {
+        use std::os::windows::ffi::OsStrExt;
+        use windows_sys::Win32::Graphics::Gdi::{
+            CreateDCW, DeleteDC, GetDeviceCaps, HORZRES, VERTRES,
+        };
+
+        let wide = |s: &str| -> Vec<u16> {
+            std::ffi::OsStr::new(s).encode_wide().chain(Some(0)).collect()
+        };
+        let winspool = wide("WINSPOOL");
+        let device = wide("Microsoft Print to PDF");
+        // SAFETY: NUL-terminated strings; the DC is released before returning.
+        let hdc = unsafe {
+            CreateDCW(winspool.as_ptr(), device.as_ptr(), std::ptr::null(), std::ptr::null())
+        };
+        assert!(!hdc.is_null(), "printer DC should open");
+        // SAFETY: capability indexes on a valid DC.
+        let (w, h) = unsafe { (GetDeviceCaps(hdc, HORZRES as i32), GetDeviceCaps(hdc, VERTRES as i32)) };
+        // SAFETY: releasing the DC opened above.
+        unsafe { DeleteDC(hdc) };
+        assert!(w > 0 && h > 0, "printable area should be reported, got {w}x{h}");
+    }
+
+    /// End to end through the real spooler: plot a page with black ink, run
+    /// the GDI fallback against "Microsoft Print to PDF" redirected to a file
+    /// (no dialog, no paper), then rasterise the result and require that ink
+    /// actually landed on the page. Catches off-page draws (the blank-paper
+    /// regression) without a physical printer.
+    #[cfg(target_os = "windows")]
+    #[test]
+    fn gdi_fallback_lands_ink_on_the_printed_page() {
+        use printpdf::{Color, Mm, PdfDocument, PdfPage as OutputPage, PdfSaveOptions, Rgb};
+
+        let mut document = PdfDocument::new("gdi ink test");
+        let mut ops = Vec::new();
+        // A big black block in the middle of an A4 page.
+        ops.push(printpdf::Op::SetFillColor {
+            col: Color::Rgb(Rgb { r: 0.0, g: 0.0, b: 0.0, icc_profile: None }),
+        });
+        // printpdf 0.9's DrawRectangle never paints (its serializer always
+        // ends the path with `n`), so the ink must be a filled polygon — the
+        // same op the plot pipeline draws hatches with.
+        ops.push(printpdf::Op::DrawPolygon {
+            polygon: printpdf::Polygon {
+                rings: vec![printpdf::PolygonRing {
+                    points: vec![
+                        printpdf::LinePoint { p: printpdf::Point { x: Mm(60.0).into(), y: Mm(60.0).into() }, bezier: false },
+                        printpdf::LinePoint { p: printpdf::Point { x: Mm(150.0).into(), y: Mm(60.0).into() }, bezier: false },
+                        printpdf::LinePoint { p: printpdf::Point { x: Mm(150.0).into(), y: Mm(100.0).into() }, bezier: false },
+                        printpdf::LinePoint { p: printpdf::Point { x: Mm(60.0).into(), y: Mm(100.0).into() }, bezier: false },
+                    ],
+                }],
+                mode: printpdf::PaintMode::Fill,
+                winding_order: printpdf::WindingOrder::NonZero,
+            },
+        });
+        document
+            .pages
+            .push(OutputPage::new(Mm(210.0), Mm(148.0), ops));
+        let bytes = document.save(&PdfSaveOptions::default(), &mut Vec::new());
+        let plot = std::env::temp_dir().join("ocs_gdi_ink_source.pdf");
+        std::fs::write(&plot, &bytes).unwrap();
+
+        let printed = std::env::temp_dir().join("ocs_gdi_ink_output.pdf");
+        let _ = std::fs::remove_file(&printed);
+
+        let result = super::gdi_raster_print(
+            &plot,
+            Some("Microsoft Print to PDF"),
+            1,
+            Some(&printed),
+        );
+        assert!(result.is_ok(), "GDI print failed: {result:?}");
+
+        // The spooled PDF must contain the black block: rasterise it and
+        // count clearly-dark pixels.
+        let page = crate::scene::model::pdf_raster::rasterize_page(
+            &printed.to_string_lossy(),
+            "1",
+        )
+        .expect("spooled output should rasterise");
+        let dark = page
+            .pixels
+            .chunks_exact(4)
+            .filter(|px| px[0] < 100 && px[1] < 100 && px[2] < 100)
+            .count();
+        std::fs::remove_file(&plot).ok();
+        std::fs::remove_file(&printed).ok();
+        assert!(
+            dark > page.width as usize * page.height as usize / 50,
+            "printed page should carry ink; only {dark} dark pixels"
+        );
+    }
+
+    #[cfg(target_os = "windows")]
+    /// The plot sheet's orientation must drive the printer's DEVMODE: a
+    /// landscape sheet spooled through "Microsoft Print to PDF" (whose
+    /// default is portrait) has to come out as a landscape page.
+    #[cfg(target_os = "windows")]
+    #[test]
+    fn gdi_fallback_prints_landscape_sheets_landscape() {
+        use printpdf::{Color, Mm, PdfDocument, PdfPage as OutputPage, PdfSaveOptions, Rgb};
+
+        let mut document = PdfDocument::new("gdi orientation test");
+        let mut ops = Vec::new();
+        ops.push(printpdf::Op::SetFillColor {
+            col: Color::Rgb(Rgb { r: 0.0, g: 0.0, b: 0.0, icc_profile: None }),
+        });
+        ops.push(printpdf::Op::DrawPolygon {
+            polygon: printpdf::Polygon {
+                rings: vec![printpdf::PolygonRing {
+                    points: vec![
+                        printpdf::LinePoint { p: printpdf::Point { x: Mm(20.0).into(), y: Mm(20.0).into() }, bezier: false },
+                        printpdf::LinePoint { p: printpdf::Point { x: Mm(270.0).into(), y: Mm(20.0).into() }, bezier: false },
+                        printpdf::LinePoint { p: printpdf::Point { x: Mm(270.0).into(), y: Mm(45.0).into() }, bezier: false },
+                        printpdf::LinePoint { p: printpdf::Point { x: Mm(20.0).into(), y: Mm(45.0).into() }, bezier: false },
+                    ],
+                }],
+                mode: printpdf::PaintMode::Fill,
+                winding_order: printpdf::WindingOrder::NonZero,
+            },
+        });
+        // Landscape A4: 297 × 210 mm.
+        document.pages.push(OutputPage::new(Mm(297.0), Mm(210.0), ops));
+        let bytes = document.save(&PdfSaveOptions::default(), &mut Vec::new());
+        let plot = std::env::temp_dir().join("ocs_gdi_orientation_source.pdf");
+        std::fs::write(&plot, &bytes).unwrap();
+        let printed = std::env::temp_dir().join("ocs_gdi_orientation_output.pdf");
+        let _ = std::fs::remove_file(&printed);
+
+        let result = super::gdi_raster_print(&plot, Some("Microsoft Print to PDF"), 1, Some(&printed));
+        assert!(result.is_ok(), "GDI print failed: {result:?}");
+
+        let page = crate::scene::model::pdf_raster::rasterize_page(
+            &printed.to_string_lossy(),
+            "1",
+        )
+        .expect("spooled output should rasterise");
+        std::fs::remove_file(&plot).ok();
+        std::fs::remove_file(&printed).ok();
+
+        // Whichever mechanism wins — DEVMODE orientation or the raster
+        // rotation fallback — the ink must land on the page and the plot's
+        // long side must run along the page's long side.
+        let mut min_x = page.width;
+        let mut max_x = 0u32;
+        let mut min_y = page.height;
+        let mut max_y = 0u32;
+        let mut dark = 0usize;
+        for y in 0..page.height {
+            for x in 0..page.width {
+                let px = &page.pixels[((y * page.width + x) * 4) as usize..((y * page.width + x) * 4 + 3) as usize];
+                if px.iter().all(|&c| c < 100) {
+                    dark += 1;
+                    min_x = min_x.min(x);
+                    max_x = max_x.max(x);
+                    min_y = min_y.min(y);
+                    max_y = max_y.max(y);
+                }
+            }
+        }
+        assert!(dark > 1_000, "printed page must carry ink; {dark} dark pixels");
+        let ink_w = (max_x - min_x + 1) as f64;
+        let ink_h = (max_y - min_y + 1) as f64;
+        assert_eq!(
+            ink_w > ink_h,
+            page.width > page.height,
+            "ink aspect must follow the page: ink {:.0}x{:.0} on page {}x{}",
+            ink_w,
+            ink_h,
+            page.width,
+            page.height
+        );
+    }
+
     #[test]
     fn windows_opens_selected_printer_or_printer_list() {
         assert_eq!(

src/mcp.rs

@@ -54,6 +54,7 @@ const EXECUTE_OPS: &[&str] = &[
     "property",
     "set_properties",
     "action",
+    "embed_image",
     "save",
     "stop",
     "batch",
@@ -72,6 +73,7 @@ const BATCH_STEP_OPS: &[&str] = &[
     "property",
     "set_properties",
     "action",
+    "embed_image",
     "save",
     "stop",
 ];
@@ -717,6 +719,12 @@ fn validate_execute_request(request: &Value, op: &str) -> Result<(), String> {
             )),
             None => missing("name", r#"{"op":"action","name":"zoom_extents"}"#),
         },
+        "embed_image" if request["path"].as_str().is_none_or(str::is_empty) => {
+            missing(
+                "path",
+                r#"{"op":"embed_image","path":"/path/logo.png","at":[0,0,0],"width":100}"#,
+            )
+        }
         _ => Ok(()),
     }
 }
@@ -902,7 +910,9 @@ fn execute_request_schema() -> Value {
             "camera_revision":{"type":"integer","minimum":0,"description":"Expected camera revision when view state matters."},
             "selection":{"type":"array","items":handle.clone(),"description":"Expected selected handles from current state."},
             "cmd":{"type":"string","minLength":1,"description":"Command name followed by its prompt answers separated by spaces. Points use x,y or x,y,z; option answers use their token. Read command details first when unsure.","examples":["LINE 0,0 10,10","CIRCLE 5,5 3","PLINE 0,0 10,0 10,10 C"]},
-            "path":{"type":"string","minLength":1,"description":"Absolute drawing path for open or save."},
+            "path":{"type":"string","minLength":1,"description":"Absolute path: drawing for open or save, image file for embed_image."},
+            "at":{"type":"array","items":{"type":"number"},"minItems":2,"maxItems":3,"description":"World [x,y] or [x,y,z] placement corner for embed_image (picture grows up-right)."},
+            "width":{"type":"number","exclusiveMinimum":0,"description":"World width for embed_image; height follows the image aspect ratio. Defaults to pixel_width/100."},
             "kind":{"type":"string","enum":["text","token","point","entity","structure","selection","enter"],"description":"Input kind listed in state.command.accepts."},
             "text":{"type":"string","description":"Free text or one option/value token."},
             "point":point,
@@ -943,6 +953,7 @@ fn execute_request_schema() -> Value {
             {"properties":{"op":{"const":"property"}},"required":["field","value"]},
             {"properties":{"op":{"const":"set_properties"}},"required":["collection","updates"]},
             {"properties":{"op":{"const":"action"}},"required":["name"]},
+            {"properties":{"op":{"const":"embed_image"}},"required":["path"]},
             {"properties":{"op":{"const":"save"}}},
             {"properties":{"op":{"const":"stop"}}},
             {"properties":{"op":{"const":"batch"}},"required":["steps"]}

src/modules/draw/draw/raster_image.rs

@@ -1,6 +1,10 @@
-// IMAGE / IMAGEATTACH command — place a raster image in the drawing.
+// IMAGE / IMAGEEMBED commands — place a raster image in the drawing.
 //
-// Workflow:
+// IMAGE references the picture by path (RasterImage + ImageDefinition, like
+// AutoCAD's IMAGEATTACH); IMAGEEMBED packs the encoded raster inside the
+// drawing as an OLE2FRAME so the .dwg travels alone.
+//
+// Workflow (both commands):
 //   1. File dialog opens (async, handled in update.rs).
 //   2. User picks insertion point (first click).
 //   3. User drags to pick width; height is computed from the image's aspect ratio.
@@ -13,10 +17,22 @@ use glam::DVec3;
 use crate::t;
 
 use crate::command::{CadCommand, CmdResult, WorkingPlane};
+use crate::io::ole_embed::{build_embedded_ole, corners_from_placement, EmbeddedImage};
 use crate::scene::model::wire_model::WireModel;
 
+/// Where the picture's pixels come from.
+#[derive(Clone)]
+pub enum ImageSource {
+    /// Reference by path — the drawing stores the file location.
+    File(String),
+    /// Embedded — the encoded raster travels inside the drawing.
+    Embedded(EmbeddedImage),
+}
+
 pub struct ImageCommand {
-    file_path: String,
+    source: ImageSource,
+    /// CLI name: "IMAGE" for a path reference, "IMAGEEMBED" when embedded.
+    name: &'static str,
     pixel_width: u32,
     pixel_height: u32,
     origin: Option<DVec3>,
@@ -26,7 +42,8 @@ pub struct ImageCommand {
 impl ImageCommand {
     pub fn new(file_path: String, pixel_width: u32, pixel_height: u32) -> Self {
         Self {
-            file_path,
+            source: ImageSource::File(file_path),
+            name: "IMAGE",
             pixel_width,
             pixel_height,
             origin: None,
@@ -34,6 +51,25 @@ impl ImageCommand {
         }
     }
 
+    pub fn new_embedded(image: EmbeddedImage) -> Self {
+        let (pixel_width, pixel_height) = (image.pixel_width, image.pixel_height);
+        Self {
+            source: ImageSource::Embedded(image),
+            name: "IMAGEEMBED",
+            pixel_width,
+            pixel_height,
+            origin: None,
+            plane: WorkingPlane::default(),
+        }
+    }
+
+    fn source_name(&self) -> std::borrow::Cow<'_, str> {
+        match &self.source {
+            ImageSource::File(path) => std::borrow::Cow::Borrowed(short_name(path)),
+            ImageSource::Embedded(image) => std::borrow::Cow::Owned(image.name.clone()),
+        }
+    }
+
     fn aspect(&self) -> f64 {
         if self.pixel_height == 0 {
             1.0
@@ -46,21 +82,30 @@ impl ImageCommand {
         let origin = self.plane.to_local(origin);
         let width_pt = self.plane.to_local(width_pt);
         let world_width = (width_pt.x - origin.x).abs().max(0.001);
-        let world_height = world_width / self.aspect();
-
         let ins = Vector3::new(origin.x, origin.y, origin.z);
 
-        let mut img = RasterImage::with_size(
+        match &self.source {
-            &self.file_path,
+            ImageSource::File(path) => {
-            ins,
+                let world_height = world_width / self.aspect();
-            self.pixel_width as f64,
+                let mut img = RasterImage::with_size(
-            self.pixel_height as f64,
+                    path,
-            world_width,
+                    ins,
-            world_height,
+                    self.pixel_width as f64,
-        );
+                    self.pixel_height as f64,
-        img.flags = acadrust::entities::ImageDisplayFlags::SHOW_IMAGE
+                    world_width,
-            | acadrust::entities::ImageDisplayFlags::USE_CLIPPING_BOUNDARY;
+                    world_height,
-        self.plane.place_entity(EntityType::RasterImage(img))
+                );
+                img.flags = acadrust::entities::ImageDisplayFlags::SHOW_IMAGE
+                    | acadrust::entities::ImageDisplayFlags::USE_CLIPPING_BOUNDARY;
+                self.plane.place_entity(EntityType::RasterImage(img))
+            }
+            ImageSource::Embedded(image) => {
+                let (upper_left, lower_right) =
+                    corners_from_placement(ins, world_width, self.aspect());
+                let ole = build_embedded_ole(image, upper_left, lower_right);
+                self.plane.place_entity(EntityType::Ole2Frame(ole))
+            }
+        }
     }
 }
 
@@ -70,14 +115,14 @@ impl CadCommand for ImageCommand {
     }
 
     fn name(&self) -> &'static str {
-        "IMAGE"
+        self.name
     }
 
     fn prompt(&self) -> String {
         if self.origin.is_none() {
             t!(
                 "IMAGE  Specify insertion point (%{name}):  ",
-                name = short_name(&self.file_path)
+                name = self.source_name()
             )
             .into_owned()
         } else {

src/scene/entity.rs

@@ -2153,19 +2153,19 @@ impl Scene {
 
     fn populate_images_from_document_unbumped(&mut self) {
         self.images.clear();
-        let entries: Vec<(Handle, acadrust::entities::RasterImage)> = self
+        let entries: Vec<(Handle, acadrust::entities::EntityType)> = self
             .document
             .entities()
-            .filter_map(|e| {
+            .filter(|e| {
-                if let EntityType::RasterImage(img) = e {
+                matches!(
-                    Some((img.common.handle, img.clone()))
+                    e,
-                } else {
+                    EntityType::RasterImage(_) | EntityType::Ole2Frame(_) | EntityType::Underlay(_)
-                    None
+                )
-                }
             })
+            .map(|e| (e.common().handle, e.clone()))
             .collect();
-        for (handle, img) in entries {
+        for (handle, entity) in entries {
-            if let Some(model) = ImageModel::from_raster_image(&img) {
+            if let Some(model) = self.image_seed_for(&entity) {
                 self.images.insert(handle, model);
             }
         }

src/scene/model/pdf_raster.rs

@@ -18,7 +18,7 @@ pub struct PdfPage {
 
 const RASTER_DPI: f32 = 150.0;
 
-type PageKey = (String, String);
+type PageKey = (String, String, u32);
 
 fn page_cache() -> &'static Mutex<HashMap<PageKey, Option<Arc<PdfPage>>>> {
     static CACHE: OnceLock<Mutex<HashMap<PageKey, Option<Arc<PdfPage>>>>> = OnceLock::new();
@@ -40,12 +40,18 @@ pub fn register_source(path: &str, bytes: Arc<Vec<u8>>) {
     page_cache()
         .lock()
         .unwrap_or_else(|error| error.into_inner())
-        .retain(|(cached_path, _), _| cached_path != path);
+        .retain(|(cached_path, _, _), _| cached_path != path);
 }
 
 /// Rasterise a 1-based PDF page, memoised by source path and page name.
 pub fn rasterize_page(path: &str, page: &str) -> Option<Arc<PdfPage>> {
-    let key = (path.to_string(), page.to_string());
+    rasterize_page_at_dpi(path, page, RASTER_DPI)
+}
+
+/// Rasterise a 1-based PDF page at a caller-chosen DPI, memoised per source
+/// path, page and DPI (print quality differs from the on-screen 150 DPI).
+pub fn rasterize_page_at_dpi(path: &str, page: &str, dpi: f32) -> Option<Arc<PdfPage>> {
+    let key = (path.to_string(), page.to_string(), dpi.to_bits());
     if let Some(hit) = page_cache()
         .lock()
         .unwrap_or_else(|error| error.into_inner())
@@ -55,7 +61,7 @@ pub fn rasterize_page(path: &str, page: &str) -> Option<Arc<PdfPage>> {
         return hit;
     }
 
-    let built = rasterize_uncached(path, page);
+    let built = rasterize_uncached(path, page, dpi);
     page_cache()
         .lock()
         .unwrap_or_else(|error| error.into_inner())
@@ -63,12 +69,12 @@ pub fn rasterize_page(path: &str, page: &str) -> Option<Arc<PdfPage>> {
     built
 }
 
-fn rasterize_uncached(path: &str, page: &str) -> Option<Arc<PdfPage>> {
+fn rasterize_uncached(path: &str, page: &str, dpi: f32) -> Option<Arc<PdfPage>> {
     let bytes = source_bytes(path)?;
     let pdf = Pdf::new(bytes).ok()?;
     let page_no = page.trim().parse::<usize>().unwrap_or(1).max(1);
     let page = pdf.pages().get(page_no - 1)?;
-    let scale = RASTER_DPI / 72.0;
+    let scale = dpi / 72.0;
     let pixmap = hayro::render(
         page,
         &RenderCache::new(),
@@ -86,7 +92,7 @@ fn rasterize_uncached(path: &str, page: &str) -> Option<Arc<PdfPage>> {
         pixels: Arc::new(pixmap.data_as_u8_slice().to_vec()),
         width,
         height,
-        dpi: RASTER_DPI,
+        dpi,
     }))
 }
 

src/ui/window/missing_fonts.rs

@@ -0,0 +1,84 @@
+// Missing-fonts prompt — shown after a drawing opens with `.shx` fonts this
+// machine doesn't have. Offers to fetch them from the community repository
+// (see `fonts/README.md` in the repo root) instead of rendering with a
+// mismatched substitute.
+
+use crate::app::Message;
+use iced::widget::{button, column, container, row, scrollable, text, text_input, Space};
+use iced::{Element, Fill, Length, Shrink, Theme};
+
+fn muted_style(theme: &Theme) -> text::Style {
+    text::Style {
+        color: Some(theme.palette().background.weak.text),
+    }
+}
+
+/// The prompt: the missing-font list, a download action, and a skip.
+pub fn view_window<'a>(
+    fonts: &'a [String],
+    font_source: &'a str,
+    sizing: crate::ui::modal::ModalSizing,
+) -> Element<'a, Message> {
+    let content_width = if matches!(sizing.width, Length::Fill) {
+        Fill
+    } else {
+        Shrink
+    };
+    let content_height = if matches!(sizing.height, Length::Fill) {
+        Fill
+    } else {
+        Shrink
+    };
+    let listed: Vec<Element<'a, Message>> = fonts
+        .iter()
+        .map(|name| text(format!("  {name}")).size(12).into())
+        .collect();
+    let actions = row![
+        Space::new().width(content_width),
+        button(text(crate::t!("Skip")).size(12))
+            .on_press(Message::MissingFontsDismiss)
+            .style(button::secondary)
+            .padding([6, 14]),
+        button(text(crate::t!("Download")).size(12))
+            .on_press(Message::MissingFontsDownload)
+            .style(button::primary)
+            .padding([6, 14]),
+    ]
+    .spacing(8);
+
+    container(
+        column![
+            text(crate::t!("Missing fonts")).size(20),
+            text(crate::t!(
+                "This drawing uses fonts that are not installed on this machine. Download them from the OpenCADStudio community font repository?"
+            ))
+            .size(11)
+            .style(muted_style),
+            container(scrollable(column(listed).spacing(2)).height(content_height))
+                .padding([10, 12])
+                .width(content_width)
+                .height(content_height)
+                .style(container::bordered_box),
+            column![
+                text(crate::t!("Font source — leave empty for the community repository, or point at any folder (e.g. your company's font server):"))
+                    .size(10)
+                    .style(muted_style),
+                text_input(
+                    crate::t!("https://server/fonts or a GitHub raw folder").as_ref(),
+                    font_source,
+                )
+                .on_input(Message::MissingFontsSourceChanged)
+                .size(11)
+                .padding([4, 8])
+                .width(content_width),
+            ]
+            .spacing(3),
+            actions,
+        ]
+        .spacing(10)
+        .width(sizing.width)
+        .height(sizing.height),
+    )
+    .padding([12, 16])
+    .into()
+}

src/ui/window/mod.rs

@@ -14,6 +14,7 @@ pub mod shortcuts;
 pub mod layers;
 pub mod update_notice;
 pub mod open_progress;
+pub mod missing_fonts;
 pub mod recovery;
 pub mod options;
 pub mod attribute_editor;

src/ui/window/plot.rs

@@ -160,6 +160,10 @@ pub struct PlotDialogState {
     pub upside_down: bool,
     pub copies: String,
     pub area: String,
+    /// The picked world-space plot window (x0, y0, x1, y1) backing
+    /// `area == "Window"`. Persisted so reopening the dialog — or the app —
+    /// keeps the same window instead of reporting an empty plot area.
+    pub window: Option<(f64, f64, f64, f64)>,
     pub center: bool,
     pub offset_x: String,
     pub offset_y: String,
@@ -219,6 +223,7 @@ impl Default for PlotDialogState {
             upside_down: false,
             copies: "1".into(),
             area: "Window".into(),
+            window: None,
             center: true,
             offset_x: "0.0".into(),
             offset_y: "0.0".into(),
@@ -263,6 +268,7 @@ impl PlotDialogState {
         self.upside_down = o.upside_down;
         self.copies = o.copies.clone();
         self.area = o.area.clone();
+        self.window = o.window;
         self.center = o.center;
         self.offset_x = o.offset_x.clone();
         self.offset_y = o.offset_y.clone();

src/ui/window/xref_manager.rs

@@ -619,6 +619,11 @@ impl XrefManagerPanel {
                         Some(Message::ImagePick),
                         None,
                     ),
+                    menu_item(
+                        crate::t!("Embed Image (in drawing)").into_owned(),
+                        Some(Message::ImageEmbedPick),
+                        None,
+                    ),
                     menu_item(
                         crate::t!("Attach PDF").into_owned(),
                         Some(Message::PdfAttachPick),