cut uuid

Cargo.toml

@@ -28,7 +28,6 @@ log = "0.4"
 lazy_static = "1.4.0"
 once_cell = "1.18.0"
 rfd = "0.12.0"
-uuid = { version = "1.4.1", features = ["js", "fast-rng", "v4"] }
 
 # You only need serde if you want app persistence:
 #serde = { version = "1", features = ["derive"] }

src/app.rs

@@ -6,7 +6,13 @@ use crate::{
 use egui::{mutex::Mutex, Align2, DroppedFile, FontId, RichText, TextStyle};
 use egui_extras::{image::load_image_bytes, RetainedImage};
 
-use std::{cell::RefCell, io::Cursor, rc::Rc};
+use std::{
+	cell::RefCell,
+	collections::hash_map::DefaultHasher,
+	hash::{Hash, Hasher},
+	io::Cursor,
+	rc::Rc,
+};
 
 #[derive(Default)]
 pub struct MetadataTool {
@@ -111,6 +117,7 @@ impl MetadataTool {
 
 	pub fn load_files_or_err(&mut self, ui: &mut egui::Ui) {
 		if !self.dropped_files.is_empty() {
+			let mut hasher = DefaultHasher::new();
 			ui.group(|ui| {
 				for file in &self.dropped_files {
 					if let Some(bytes) = Self::load_file_contents(file) {
@@ -138,7 +145,12 @@ impl MetadataTool {
 
 						if let Ok(raw_dmi) = dmi::RawDmi::load(bytes_reader) {
 							let new_mwin = ImageWindow {
-								id: uuid::Uuid::new_v4(),
+								id: {
+									for chunk in &raw_dmi.chunks_idat {
+										chunk.data.hash(&mut hasher)
+									}
+									hasher.finish().to_string().into()
+								},
 								img: {
 									let h = (ui.available_height() * 1.85) as u32;
 									let w = (ui.available_width() * 1.85) as u32;
@@ -190,7 +202,7 @@ impl eframe::App for MetadataTool {
 
 		for mwindow in &self.windows {
 			egui::Window::new(&mwindow.metadata.file_name)
-				.id(mwindow.id.to_string().into())
+				.id(mwindow.id)
 				.open(&mut mwindow.is_open.borrow_mut())
 				.show(ctx, |ui| {
 					create_meta_viewer(mwindow, ui, &mwindow.metadata, &tst);

src/image_window.rs

@@ -6,7 +6,7 @@ use poll_promise::Promise;
 use std::{cell::RefCell, rc::Rc};
 
 pub struct ImageWindow {
-	pub id: uuid::Uuid,
+	pub id: egui::Id,
 	pub img: Rc<RetainedImage>,
 	pub dmi: dmi::RawDmi,
 	pub metadata: Rc<ImageMetadata>,
@@ -26,7 +26,7 @@ pub fn create_meta_viewer(
 	metadata: &Rc<ImageMetadata>,
 	toasts: &RefCell<&mut Toasts>,
 ) {
-	egui::TopBottomPanel::bottom(format!("{}_meta", img_win.id)).show_inside(ui, |ui| {
+	egui::TopBottomPanel::bottom(format!("{:?}_meta", img_win.id)).show_inside(ui, |ui| {
 		ui.add_space(6.0);
 		ui.allocate_ui_with_layout(
 			vec2(ui.available_width(), ui.available_height()),