Desktop: Register file type on Linux and Windows

.nix/pkgs/graphite.nix

@@ -134,7 +134,10 @@ deps.crane.lib.buildPackage (
       cp target/${if dev then "debug" else "release"}/graphite $out/bin/graphite
 
       mkdir -p $out/share/applications
-      cp $src/desktop/assets/*.desktop $out/share/applications/
+      cp $src/desktop/assets/art.graphite.Graphite.desktop $out/share/applications/
+
+      mkdir -p $out/share/mime/packages
+      cp $src/desktop/assets/art.graphite.Graphite.xml $out/share/mime/packages/
 
       mkdir -p $out/share/icons/hicolor/scalable/apps
       cp ${branding}/app-icons/graphite.svg $out/share/icons/hicolor/scalable/apps/art.graphite.Graphite.svg

desktop/assets/art.graphite.Graphite.desktop

@@ -2,10 +2,11 @@
 Name=Graphite
 GenericName=Vector & Raster Graphics Editor
 Comment=Open-source vector & raster graphics editor. Featuring node based procedural nondestructive editing workflow.
-Exec=graphite
+Exec=graphite %F
 Terminal=false
 Type=Application
 Icon=art.graphite.Graphite
 Categories=Graphics;VectorGraphics;RasterGraphics;
 Keywords=graphite;editor;vector;raster;procedural;design;
 StartupWMClass=art.graphite.Graphite
+MimeType=application/graphite+json;image/svg+xml;image/png;image/jpeg;image/gif;image/bmp;image/tiff;image/webp;image/x-portable-pixmap;image/x-portable-graymap;image/x-portable-bitmap;image/vnd.microsoft.icon;

desktop/assets/art.graphite.Graphite.xml

@@ -0,0 +1,9 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<mime-info xmlns="http://www.freedesktop.org/standards/shared-mime-info">
+	<mime-type type="application/graphite+json">
+		<comment>Graphite Document</comment>
+		<sub-class-of type="application/json"/>
+		<glob pattern="*.graphite"/>
+		<icon name="art.graphite.Graphite"/>
+	</mime-type>
+</mime-info>

desktop/platform/win/Cargo.toml

@@ -15,5 +15,8 @@ path = "src/main.rs"
 [dependencies]
 graphite-desktop = { path = "../.." }
 
+[target.'cfg(target_os = "windows")'.dependencies]
+windows-registry = "0.6"
+
 [target.'cfg(target_os = "windows")'.build-dependencies]
 winres = "0.1"

desktop/platform/win/src/file_associations.rs

@@ -0,0 +1,48 @@
+use std::env;
+use std::error::Error;
+
+use windows_registry::CURRENT_USER;
+
+const PROG_ID: &str = "Graphite.Document";
+const EXECUTABLE_NAME: &str = "Graphite.exe";
+const APP_FRIENDLY_NAME: &str = "Graphite";
+const DOCUMENT_FRIENDLY_NAME: &str = "Graphite Document";
+const MIME_TYPE: &str = "application/graphite+json";
+const FILE_EXTENSION: &str = ".graphite";
+const SUPPORTED_EXTENSIONS: &[&str] = &[FILE_EXTENSION, ".svg", ".png", ".jpg", ".jpeg"];
+
+pub fn register() {
+	if let Err(e) = register_inner() {
+		eprintln!("Failed to register file associations: {e}");
+	}
+}
+
+fn register_inner() -> Result<(), Box<dyn Error>> {
+	let exe = env::current_exe()?;
+	let exe_string = exe.to_string_lossy();
+	let open_command = format!("\"{exe_string}\" \"%1\"");
+	let icon_value = format!("{exe_string},0");
+
+	let prog_id = CURRENT_USER.create(format!("Software\\Classes\\{PROG_ID}"))?;
+	prog_id.set_string("", DOCUMENT_FRIENDLY_NAME)?;
+	let prog_id_icon = CURRENT_USER.create(format!("Software\\Classes\\{PROG_ID}\\DefaultIcon"))?;
+	prog_id_icon.set_string("", &icon_value)?;
+	let prog_id_command = CURRENT_USER.create(format!("Software\\Classes\\{PROG_ID}\\shell\\open\\command"))?;
+	prog_id_command.set_string("", &open_command)?;
+
+	let app_base = format!("Software\\Classes\\Applications\\{EXECUTABLE_NAME}");
+	let app = CURRENT_USER.create(&app_base)?;
+	app.set_string("FriendlyAppName", APP_FRIENDLY_NAME)?;
+	let app_command = CURRENT_USER.create(format!("{app_base}\\shell\\open\\command"))?;
+	app_command.set_string("", &open_command)?;
+	let supported = CURRENT_USER.create(format!("{app_base}\\SupportedTypes"))?;
+	for extension in SUPPORTED_EXTENSIONS {
+		supported.set_string(extension, "")?;
+	}
+
+	let extension = CURRENT_USER.create(format!("Software\\Classes\\{FILE_EXTENSION}"))?;
+	extension.set_string("", PROG_ID)?;
+	extension.set_string("Content Type", MIME_TYPE)?;
+
+	Ok(())
+}

desktop/platform/win/src/main.rs

@@ -1,4 +1,11 @@
 #![windows_subsystem = "windows"]
+
+#[cfg(target_os = "windows")]
+mod file_associations;
+
 fn main() {
+	#[cfg(target_os = "windows")]
+	file_associations::register();
+
 	graphite_desktop::start();
 }