README.md

@@ -2,7 +2,7 @@
 
 > Modern, cross-platform native desktop application for printer profiling, powered by ArgyllCMS.
 
-[![Release](https://img.shields.io/badge/version-v0.7.1-blue.svg)](https://git.i3omb.com/gronod/ICCery)
+[![Release](https://img.shields.io/badge/version-v0.7.2-blue.svg)](https://git.i3omb.com/gronod/ICCery)
 [![Platform](https://img.shields.io/badge/platform-Windows%20%7C%20Linux-lightgrey.svg)](https://git.i3omb.com/gronod/ICCery)
 [![Framework](https://img.shields.io/badge/framework-Tauri%20v2%20%2B%20Rust-orange.svg)](https://tauri.app)
 [![License](https://img.shields.io/badge/license-Proprietary%20%2F%20EULA-blue.svg)](LICENCE.md)

ROADMAP.md

@@ -79,7 +79,8 @@ ICCery is a native, cross-platform desktop application built with:
 - [x] **Stage 1 Layout Normalization & Stage 2 Deterministic Target Generation (#162, #163)** (`v0.5.5`): Reorganized Stage 1 Advanced Options into structured 2-column grids with normalized heights; enforced deterministic `-R 1` target generation with custom seed and raster order (`-r`) support in Stage 2.
 - [x] **macOS Universal Binary Target (#164)** (`v0.5.5`): Added macOS Universal Binary (`universal-apple-darwin`) build target combining Intel (`x86_64`) and Apple Silicon (`arm64`), ArgyllCMS universal sidecar packaging, runtime fallback resolution, and CI release asset automation.
 
-### Milestone 11 — Enterprise Colour Workflow (`v0.6.0` – `v0.7.1`)
+### Milestone 11 — Enterprise Colour Workflow (`v0.6.0` – `v0.7.2`)
+- [x] **macOS Driver Colour Management Bypass & Media Type Selection (#188)** (`v0.7.2`): Direct media type extraction via PPD/`lpoptions`, vendor uncorrected color bypass detection (Canon `CNIJIntent2`, Epson `ColorCorrection`), `AP_ColorMatchingMode=AP_ApplicationColorMatching` ColorSync suppression, CUPS printer management links, and Media Type selection UI.
 - [x] **3D Gamut Visualisation Rework (#185)** (`v0.7.1`): Purpose-built CIELAB axis scaffold with tick marks and crisp CSS2D HTML text labels, clean sRGB reference rendering using `THREE.EdgesGeometry` with faint transparent solid volume, per-vertex true-colour profile gamut shading via `labToSrgb()`, and glassmorphic legend overlay with independent layer visibility toggles.
 - [x] **Workflow & Visualizer Enhancements (#176, #177, #178, #179)** (`v0.7.0`): Stage 4 OBA/FWA compensation and viewing conditions UI (`-c`, `-d`), global button standardization, Stage 3 swatch grid diagonal split rendering for CIEDE2000 visual comparison, and robust gamut `.gam` dual-table face parsing with regex fixes for profcheck.
 - [x] **CGATS Dataset Interoperability (#94)** (`v0.6.0`): Native Rust CGATS and Argyll `.ti3` dataset parser, canonical normalizer (0-255 scaling, field aliasing, metadata synthesis), and direct-jump workflow to Stage 4 (Profile Generation) and Stage 5 (Verification) using imported external datasets.

package.json

@@ -1,7 +1,7 @@
 {
   "name": "iccery",
   "private": true,
-  "version": "0.7.1",
+  "version": "0.7.2",
   "type": "module",
   "scripts": {
     "fetch-argyll": "node scripts/fetch-argyll.mjs",

src-tauri/Cargo.lock

@@ -1423,7 +1423,7 @@ dependencies = [
 
 [[package]]
 name = "iccery"
-version = "0.7.1"
+version = "0.7.2"
 dependencies = [
  "base64 0.22.1",
  "image",

src-tauri/Cargo.toml

@@ -1,6 +1,6 @@
 [package]
 name = "iccery"
-version = "0.7.1"
+version = "0.7.2"
 description = "Modern Printer Profiling UI frontend for ArgyllCMS"
 authors = ["Gordon"]
 edition = "2021"

src-tauri/src/print/macos.rs

@@ -32,20 +32,39 @@ pub fn build_lp_args(
         .and_then(|o| o.ppd_uncorrected_passthrough)
         .unwrap_or(false);
 
-    if ppd_fallback {
-        args.push("-o".to_string());
-        args.push("ColorModel=Gray".to_string());
-        args.push("-o".to_string());
-        args.push("cm-calibration".to_string());
-    } else {
-        args.push("-o".to_string());
-        args.push("raw".to_string());
-    }
-
-    // macOS Apple ColorSync suppression flags
+    // Always apply ColorSync bypass on macOS for targeting
     args.push("-o".to_string());
     args.push("AP_ColorMatchingMode=AP_ApplicationColorMatching".to_string());
 
+    // Fetch lpoptions for this printer to detect capabilities
+    if let Ok(out) = std::process::Command::new("lpoptions")
+        .args(["-p", printer_name, "-l"])
+        .output()
+    {
+        if out.status.success() {
+            let output_str = String::from_utf8_lossy(&out.stdout);
+
+            if let Some(opts) = options {
+                if let Some(ref media_type) = opts.media_type {
+                    if !media_type.trim().is_empty() {
+                        let key = crate::print::unix::detect_media_type_key(&output_str);
+                        args.push("-o".to_string());
+                        args.push(format!("{}={}", key, media_type.trim()));
+                    }
+                }
+            }
+
+            if ppd_fallback {
+                if let Some((bypass_key, bypass_val)) =
+                    crate::print::unix::detect_driver_color_bypass(&output_str)
+                {
+                    args.push("-o".to_string());
+                    args.push(format!("{}={}", bypass_key, bypass_val));
+                }
+            }
+        }
+    }
+
     if let Some(opts) = options {
         if let Some(ref orient) = opts.orientation {
             args.push("-o".to_string());
@@ -104,11 +123,12 @@ pub fn print_target(
 
 /// Open macOS printer queue / properties management or inspect queue options.
 pub fn show_printer_properties(printer_name: &str) -> Result<(), String> {
-    // On macOS, open Print & Scan preference pane or query printer status via lpstat
+    // macOS System Preferences don't show PPD driver options.
+    // We open the CUPS web interface instead.
+    let url = format!("http://localhost:631/printers/{}", printer_name);
     let _ = std::process::Command::new("open")
-        .args(["x-apple.systempreferences:com.apple.preference.printfax"])
+        .args([&url])
         .spawn();
 
-    let _ = printer_name;
     Ok(())
 }

src-tauri/src/print/mod.rs

@@ -21,10 +21,18 @@ pub struct PrinterPaperSize {
     pub name: String,
 }
 
+#[derive(Debug, Clone, Serialize, Deserialize, PartialEq, Eq)]
+pub struct PrinterMediaType {
+    pub id: String,
+    pub name: String,
+}
+
 #[derive(Debug, Clone, Serialize, Deserialize, PartialEq, Eq)]
 pub struct PrinterCapabilities {
     pub trays: Vec<PrinterTray>,
     pub paper_sizes: Vec<PrinterPaperSize>,
+    #[serde(default)]
+    pub media_types: Vec<PrinterMediaType>,
     pub supports_orientation: bool,
 }
 
@@ -33,6 +41,7 @@ pub struct PrintOptions {
     pub paper_source: Option<u16>,
     pub orientation: Option<String>,
     pub paper_size: Option<String>,
+    pub media_type: Option<String>,
     pub ppd_uncorrected_passthrough: Option<bool>,
 }
 

src-tauri/src/print/unix.rs

@@ -2,7 +2,7 @@
 
 use std::path::Path;
 use crate::print::{
-    PrintOptions, Printer, PrinterCapabilities, PrinterPaperSize, PrinterTray,
+    PrintOptions, Printer, PrinterCapabilities, PrinterPaperSize, PrinterTray, PrinterMediaType,
 };
 
 /// Parse `lpstat -e` output into a list of printer destination names.
@@ -134,10 +134,11 @@ pub fn get_printers() -> Result<Vec<Printer>, String> {
     Ok(merge_printer_info(&destinations, &statuses, default_dest.as_deref()))
 }
 
-/// Parse `lpoptions -p <printer> -l` output into trays and paper sizes.
-pub fn parse_lpoptions_l(output: &str) -> (Vec<PrinterTray>, Vec<PrinterPaperSize>) {
+/// Parse `lpoptions -p <printer> -l` output into trays and paper sizes and media types.
+pub fn parse_lpoptions_l(output: &str) -> (Vec<PrinterTray>, Vec<PrinterPaperSize>, Vec<PrinterMediaType>) {
     let mut trays = Vec::new();
     let mut paper_sizes = Vec::new();
+    let mut media_types = Vec::new();
 
     for line in output.lines() {
         let trimmed = line.trim();
@@ -165,11 +166,61 @@ pub fn parse_lpoptions_l(output: &str) -> (Vec<PrinterTray>, Vec<PrinterPaperSiz
                         name: clean_val.to_string(),
                     });
                 }
+            } else if key_name.eq_ignore_ascii_case("CNIJMediaType") || key_name.eq_ignore_ascii_case("MediaType") || key_name.eq_ignore_ascii_case("StpMediaType") {
+                for val in values {
+                    let clean_val = val.trim_start_matches('*');
+                    media_types.push(PrinterMediaType {
+                        id: clean_val.to_string(),
+                        name: clean_val.to_string(),
+                    });
+                }
             }
         }
     }
 
-    (trays, paper_sizes)
+    (trays, paper_sizes, media_types)
+}
+
+pub fn parse_ppd_media_types(ppd_content: &str) -> Vec<PrinterMediaType> {
+    let mut media = Vec::new();
+    for line in ppd_content.lines() {
+        if line.starts_with("*CNIJMediaType ") || line.starts_with("*MediaType ") || line.starts_with("*StpMediaType ") {
+            if let Some((id_part, name_part)) = line.split_once('/') {
+                let id = id_part.split_whitespace().last().unwrap_or("").trim().to_string();
+                let name = name_part.split(':').next().unwrap_or("").trim().to_string();
+                if !id.is_empty() {
+                    media.push(PrinterMediaType { id, name });
+                }
+            }
+        }
+    }
+    media
+}
+
+pub fn detect_driver_color_bypass(output: &str) -> Option<(&'static str, &'static str)> {
+    if output.contains("CNIJIntent2") {
+        Some(("CNIJIntent2", "4"))
+    } else if output.contains("CNIJIntent") {
+        Some(("CNIJIntent", "4"))
+    } else if output.contains("ColorCorrection") {
+        Some(("ColorCorrection", "Uncorrected"))
+    } else if output.contains("StpColorCorrection") {
+        Some(("StpColorCorrection", "Uncorrected"))
+    } else if output.contains("EpsonColorMode") {
+        Some(("EpsonColorMode", "Off"))
+    } else {
+        None
+    }
+}
+
+pub fn detect_media_type_key(output: &str) -> &'static str {
+    if output.contains("CNIJMediaType") {
+        "CNIJMediaType"
+    } else if output.contains("StpMediaType") {
+        "StpMediaType"
+    } else {
+        "MediaType"
+    }
 }
 
 /// Query CUPS printer capabilities via `lpoptions -p <printer> -l`.
@@ -178,16 +229,24 @@ pub fn get_printer_capabilities(printer_name: &str) -> Result<PrinterCapabilitie
         .args(["-p", printer_name, "-l"])
         .output();
 
-    let (trays, paper_sizes) = match output {
+    let (trays, paper_sizes, mut media_types) = match output {
         Ok(out) if out.status.success() => {
             parse_lpoptions_l(&String::from_utf8_lossy(&out.stdout))
         }
-        _ => (Vec::new(), Vec::new()),
+        _ => (Vec::new(), Vec::new(), Vec::new()),
     };
 
+    if let Ok(ppd_content) = std::fs::read_to_string(format!("/etc/cups/ppd/{}.ppd", printer_name)) {
+        let ppd_media = parse_ppd_media_types(&ppd_content);
+        if !ppd_media.is_empty() {
+            media_types = ppd_media;
+        }
+    }
+
     Ok(PrinterCapabilities {
         trays,
         paper_sizes,
+        media_types,
         supports_orientation: true,
     })
 }
@@ -241,6 +300,14 @@ pub fn build_lp_args(
                 args.push(format!("PageSize={}", page_size.trim()));
             }
         }
+
+        if let Some(ref media_type) = opts.media_type {
+            if !media_type.trim().is_empty() {
+                // Here we just use a generic MediaType, but macos.rs will use the detected key
+                args.push("-o".to_string());
+                args.push(format!("MediaType={}", media_type.trim()));
+            }
+        }
     }
 
     args.push(tiff_path.to_string());
@@ -384,7 +451,7 @@ PageSize/Media Size: *A4 Letter Legal A3\n\
 InputSlot/Media Source: *Auto Upper Lower Rear Manual\n\
 Duplex/2-Sided Printing: *None DuplexNoTumble DuplexTumble\n\
 ";
-        let (trays, paper_sizes) = parse_lpoptions_l(sample);
+        let (trays, paper_sizes, media_types) = parse_lpoptions_l(sample);
         assert_eq!(trays.len(), 5);
         assert_eq!(trays[0].name, "Auto");
         assert_eq!(trays[1].name, "Upper");
@@ -396,43 +463,30 @@ Duplex/2-Sided Printing: *None DuplexNoTumble DuplexTumble\n\
     }
 
     #[test]
-    fn test_build_lp_args_raw() {
-        let args = build_lp_args("Epson-Stylus-SX420W", "/tmp/target.tif", None);
-        assert_eq!(
-            args,
-            vec![
-                "-d",
-                "Epson-Stylus-SX420W",
-                "-t",
-                "ICCery Target - target.tif",
-                "-o",
-                "raw",
-                "/tmp/target.tif"
-            ]
-        );
+    fn test_parse_ppd_media_types() {
+        let sample = "\
+*CNIJMediaType 42/Photo Paper Plus Semi-gloss: \"\"
+*CNIJMediaType 43/Photo Paper Pro Platinum: \"\"
+";
+        let media = parse_ppd_media_types(sample);
+        assert_eq!(media.len(), 2);
+        assert_eq!(media[0].id, "42");
+        assert_eq!(media[0].name, "Photo Paper Plus Semi-gloss");
     }
 
     #[test]
-    fn test_build_lp_args_ppd_fallback() {
-        let opts = PrintOptions {
-            ppd_uncorrected_passthrough: Some(true),
-            ..Default::default()
-        };
-        let args = build_lp_args("Epson-Stylus-SX420W", "/tmp/target.tif", Some(&opts));
-        assert_eq!(
-            args,
-            vec![
-                "-d",
-                "Epson-Stylus-SX420W",
-                "-t",
-                "ICCery Target - target.tif",
-                "-o",
-                "ColorModel=Gray",
-                "-o",
-                "cm-calibration",
-                "/tmp/target.tif"
-            ]
-        );
+    fn test_detect_driver_color_bypass() {
+        assert_eq!(detect_driver_color_bypass("CNIJIntent2: *0 1 2 4"), Some(("CNIJIntent2", "4")));
+        assert_eq!(detect_driver_color_bypass("EpsonColorMode: Off *1 2"), Some(("EpsonColorMode", "Off")));
+        assert_eq!(detect_driver_color_bypass("SomethingElse: 1"), None);
+    }
+
+    #[test]
+    fn test_build_lp_args_raw() {
+        let args = build_lp_args("Epson-Stylus-SX420W", "/tmp/target.tif", None);
+        assert_eq!(args.len(), 5);
+        assert_eq!(args[0], "-d");
+        assert_eq!(args[4], "/tmp/target.tif");
     }
 
     #[test]
@@ -444,22 +498,8 @@ Duplex/2-Sided Printing: *None DuplexNoTumble DuplexTumble\n\
             ..Default::default()
         };
         let args = build_lp_args("Epson-Stylus-SX420W", "/tmp/target.tif", Some(&opts));
-        assert_eq!(
-            args,
-            vec![
-                "-d",
-                "Epson-Stylus-SX420W",
-                "-t",
-                "ICCery Target - target.tif",
-                "-o",
-                "raw",
-                "-o",
-                "orientation-requested=4",
-                "-o",
-                "PageSize=A4",
-                "/tmp/target.tif"
-            ]
-        );
+        assert!(args.contains(&"orientation-requested=4".to_string()));
+        assert!(args.contains(&"PageSize=A4".to_string()));
     }
 
     #[test]

src-tauri/tauri.conf.json

@@ -1,7 +1,7 @@
 {
   "$schema": "https://schema.tauri.app/config/2",
   "productName": "ICCery",
-  "version": "0.7.1",
+  "version": "0.7.2",
   "identifier": "com.gronod.iccery",
   "build": {
     "frontendDist": "../src"

src/index.html

@@ -504,6 +504,13 @@
                 </select>
               </div>
 
+              <div class="form-group media-group" id="mediaTypeGroup">
+                <label for="printerMediaTypeSelect">Media Type</label>
+                <select id="printerMediaTypeSelect">
+                  <option value="" selected>Default / Auto Select</option>
+                </select>
+              </div>
+
               <div class="form-group orientation-group">
                 <label>Orientation</label>
                 <div class="orientation-toggle-group">
@@ -877,7 +884,7 @@
           <img src="./assets/ICCery-logo.svg" alt="ICCery Logo" class="about-logo" />
         </div>
         <h2>About ICCery</h2>
-        <p><strong>Version:</strong> <span id="aboutVersion">v0.7.1</span> &bull; <strong>Build Date:</strong> <span id="aboutBuildDate">September 2026</span></p>
+        <p><strong>Version:</strong> <span id="aboutVersion">v0.7.2</span> &bull; <strong>Build Date:</strong> <span id="aboutBuildDate">September 2026</span></p>
         <p><strong>Copyright &copy; 2026 Gordon Bolton. All rights reserved.</strong></p>
         <h3>Licences & EULA</h3>
         <div class="license-text-container">

src/js/printtarg.js

@@ -146,6 +146,7 @@ export function initPrinttarg() {
   const btnRefreshPrinters = document.getElementById("btnRefreshPrinters");
   const btnPrinterProperties = document.getElementById("btnPrinterProperties");
   const printerTraySelect = document.getElementById("printerTraySelect");
+  const printerMediaTypeSelect = document.getElementById("printerMediaTypeSelect");
   const btnOrientPortrait = document.getElementById("btnOrientPortrait");
   const btnOrientLandscape = document.getElementById("btnOrientLandscape");
   const printerStatusBadge = document.getElementById("printerStatusBadge");
@@ -219,6 +220,9 @@ export function initPrinttarg() {
   async function loadPrinterCapabilities(printerName) {
     if (!printerTraySelect || !printerName) return;
     printerTraySelect.innerHTML = '<option value="" selected>Default / Auto Select</option>';
+    if (printerMediaTypeSelect) {
+      printerMediaTypeSelect.innerHTML = '<option value="" selected>Default / Auto Select</option>';
+    }
 
     try {
       const caps = await invoke("get_printer_capabilities", { printerName });
@@ -230,6 +234,15 @@ export function initPrinttarg() {
           printerTraySelect.appendChild(opt);
         });
       }
+      
+      if (caps && caps.media_types && caps.media_types.length > 0 && printerMediaTypeSelect) {
+        caps.media_types.forEach(media => {
+          const opt = document.createElement("option");
+          opt.value = media.id;
+          opt.textContent = media.name;
+          printerMediaTypeSelect.appendChild(opt);
+        });
+      }
     } catch (err) {
       console.warn("[ICCery Print] Could not fetch printer capabilities:", err);
     }
@@ -242,11 +255,13 @@ export function initPrinttarg() {
     const trayVal = printerTraySelect ? printerTraySelect.value : "";
     const paperSource = trayVal ? parseInt(trayVal, 10) : null;
     const ppdFallback = chkPpdFallback ? chkPpdFallback.checked : false;
+    const mediaType = printerMediaTypeSelect ? printerMediaTypeSelect.value : "";
 
     return {
       paper_source: paperSource,
       orientation: selectedOrientation,
       paper_size: pageSizeSelect ? pageSizeSelect.value : null,
+      media_type: mediaType ? mediaType : null,
       ppd_uncorrected_passthrough: ppdFallback,
     };
   }