fix: use IndexMap to preserve insertion order

Cargo.toml

@@ -12,6 +12,7 @@ arboard = { version = "3.4", features = ["wayland-data-control", "wl-clipboard-r
 chrono = "0.4"
 iced = { version = "0.13", features = ["advanced", "canvas", "multi-window", "image", "tokio"] }
 iced_anim = { version = "0.1", features = ["derive", "serde"] }
+indexmap = "2.6"
 interprocess = { version = "2.2", features = ["tokio"] }
 rdev = { git = "https://github.com/rustdesk-org/rdev", branch = "master"}
 rfd = { version = "0.14", features = ["gtk3", "tokio"], default-features = false }

src/entities/capture/mod.rs

@@ -1,6 +1,5 @@
-use std::collections::BTreeMap;
-
 use iced::{widget::canvas, Point};
+use indexmap::IndexMap;
 use shape::{Shape, ShapeColor, ShapeStroke, ShapeType};
 use xcap::image::RgbaImage;
 
@@ -11,7 +10,7 @@ pub struct CaptureWindow {
     pub crop_mode: CropMode,
     pub mode_desc: String,
     pub display: CapturedMonitor,
-    pub windows: BTreeMap<u32, CapturedWindow>,
+    pub windows: IndexMap<u32, CapturedWindow>,
     pub cursor_position: Point,
     pub mode: Mode,
     pub endpoints: Endpoints,

src/utils/capture/mod.rs

@@ -1,7 +1,6 @@
-use std::collections::BTreeMap;
-
 use arboard::{Clipboard, ImageData};
 use iced::{widget::canvas::Cache, Point};
+use indexmap::IndexMap;
 use tiny_skia::{FillRule, Paint, PathBuilder, Pixmap, Rect, Stroke, Transform};
 use xcap::{
     image::{imageops::overlay, DynamicImage, ImageFormat, RgbaImage},
@@ -99,7 +98,7 @@ impl CaptureWindow {
                 base
             }
             CropMode::SpecificWindow(id) => {
-                let window = self.windows.remove(&id).unwrap();
+                let window = self.windows.swap_remove(&id).unwrap();
 
                 let x = window.x;
                 let y = window.y;
@@ -151,7 +150,7 @@ pub fn get_display() -> CapturedMonitor {
     }
 }
 
-pub fn get_windows(monitor_id: u32) -> BTreeMap<u32, CapturedWindow> {
+pub fn get_windows(monitor_id: u32) -> IndexMap<u32, CapturedWindow> {
     let all_windows = xcap::Window::all().unwrap();
 
     let valid_windows = all_windows