refactor(core): move png and ico behind Cargo features (#3588)

.changes/icon-compile-time.md

@@ -0,0 +1,6 @@
+---
+"tauri": patch
+"tauri-codegen": patch
+---
+
+Parse window icons at compile time.

.changes/icon-feature.md

@@ -0,0 +1,7 @@
+---
+"tauri": patch
+"tauri-runtime": patch
+"tauri-runtime-wry": patch
+---
+
+**Breaking change:** Move `ico` and `png` parsing behind `icon-ico` and `icon-png` Cargo features.

core/tauri-codegen/Cargo.toml

@@ -27,6 +27,12 @@ zstd = { version = "0.10", optional = true }
 regex = { version = "1", optional = true }
 uuid = { version = "0.8", features = [ "v4" ] }
 
+[target."cfg(windows)".dependencies]
+ico = "0.1"
+
+[target."cfg(not(windows))".dependencies]
+png = "0.16"
+
 [features]
 default = [ "compression" ]
 compression = [ "zstd", "tauri-utils/compression" ]

core/tauri-codegen/src/context.rs

@@ -165,25 +165,28 @@ pub fn context_codegen(data: ContextData) -> Result<TokenStream, EmbeddedAssetsE
   };
 
   // handle default window icons for Windows targets
-  let default_window_icon = if cfg!(windows) {
+  #[cfg(windows)]
+  let default_window_icon = {
     let icon_path = find_icon(
       &config,
       &config_parent,
       |i| i.ends_with(".ico"),
       "icons/icon.ico",
     );
-    quote!(Some(include_bytes!(#icon_path).to_vec()))
-  } else if cfg!(target_os = "linux") {
+    ico_icon(&root, icon_path)
+  };
+  #[cfg(target_os = "linux")]
+  let default_window_icon = {
     let icon_path = find_icon(
       &config,
       &config_parent,
       |i| i.ends_with(".png"),
       "icons/icon.png",
     );
-    quote!(Some(include_bytes!(#icon_path).to_vec()))
-  } else {
-    quote!(None)
+    png_icon(&root, icon_path)
   };
+  #[cfg(not(any(windows, target_os = "linux")))]
+  let default_window_icon = quote!(None);
 
   let package_name = if let Some(product_name) = &config.package.product_name {
     quote!(#product_name.to_string())
@@ -213,12 +216,12 @@ pub fn context_codegen(data: ContextData) -> Result<TokenStream, EmbeddedAssetsE
         .join(system_tray_icon_path)
         .display()
         .to_string();
-      quote!(Some(#root::Icon::File(::std::path::PathBuf::from(#system_tray_icon_path))))
+      quote!(Some(#root::TrayIcon::File(::std::path::PathBuf::from(#system_tray_icon_path))))
     } else {
       let system_tray_icon_file_path = system_tray_icon_path.to_string_lossy().to_string();
       quote!(
         Some(
-          #root::Icon::File(
+          #root::TrayIcon::File(
             #root::api::path::resolve_path(
               &#config,
               &#package_info,
@@ -242,7 +245,7 @@ pub fn context_codegen(data: ContextData) -> Result<TokenStream, EmbeddedAssetsE
       .join(system_tray_icon_path)
       .display()
       .to_string();
-    quote!(Some(#root::Icon::Raw(include_bytes!(#system_tray_icon_path).to_vec())))
+    quote!(Some(#root::TrayIcon::Raw(include_bytes!(#system_tray_icon_path).to_vec())))
   } else {
     quote!(None)
   };
@@ -337,6 +340,46 @@ pub fn context_codegen(data: ContextData) -> Result<TokenStream, EmbeddedAssetsE
   )))
 }
 
+#[cfg(windows)]
+fn ico_icon<P: AsRef<Path>>(root: &TokenStream, path: P) -> TokenStream {
+  let path = path.as_ref();
+  let bytes = std::fs::read(&path)
+    .unwrap_or_else(|_| panic!("failed to read window icon {}", path.display()))
+    .to_vec();
+  let icon_dir = ico::IconDir::read(std::io::Cursor::new(bytes))
+    .unwrap_or_else(|_| panic!("failed to parse window icon {}", path.display()));
+  let entry = &icon_dir.entries()[0];
+  let rgba = entry
+    .decode()
+    .unwrap_or_else(|_| panic!("failed to decode window icon {}", path.display()))
+    .rgba_data()
+    .to_vec();
+  let width = entry.width();
+  let height = entry.height();
+  let rgba_items = rgba.into_iter();
+  quote!(Some(#root::Icon::Rgba { rgba: vec![#(#rgba_items),*], width: #width, height: #height }))
+}
+
+#[cfg(not(windows))]
+fn png_icon<P: AsRef<Path>>(root: &TokenStream, path: P) -> TokenStream {
+  let path = path.as_ref();
+  let bytes = std::fs::read(&path)
+    .unwrap_or_else(|_| panic!("failed to read window icon {}", path.display()))
+    .to_vec();
+  let decoder = png::Decoder::new(std::io::Cursor::new(bytes));
+  let (info, mut reader) = decoder
+    .read_info()
+    .unwrap_or_else(|_| panic!("failed to read window icon {}", path.display()));
+  let mut buffer: Vec<u8> = Vec::new();
+  while let Ok(Some(row)) = reader.next_row() {
+    buffer.extend(row);
+  }
+  let rgba_items = buffer.into_iter();
+  let width = info.width;
+  let height = info.height;
+  quote!(Some(#root::Icon::Rgba { rgba: vec![#(#rgba_items),*], width: #width, height: #height }))
+}
+
 fn find_icon<F: Fn(&&String) -> bool>(
   config: &Config,
   config_parent: &Path,

core/tauri-runtime-wry/Cargo.toml

@@ -17,18 +17,15 @@ wry = { version = "0.13.3", default-features = false, features = [ "file-drop",
 tauri-runtime = { version = "0.3.2", path = "../tauri-runtime" }
 tauri-utils = { version = "1.0.0-rc.2", path = "../tauri-utils" }
 uuid = { version = "0.8.2", features = [ "v4" ] }
-infer = "0.4"
 
 [target."cfg(windows)".dependencies]
-ico = "0.1"
 webview2-com = "0.13.0"
 
   [target."cfg(windows)".dependencies.windows]
   version = "0.30.0"
   features = [ "Win32_Foundation" ]
 
 [target."cfg(any(target_os = \"linux\", target_os = \"dragonfly\", target_os = \"freebsd\", target_os = \"openbsd\", target_os = \"netbsd\"))".dependencies]
-png = "0.16"
 gtk = { version = "0.15", features = [ "v3_20" ] }
 
 [features]

core/tauri-runtime-wry/src/lib.rs

@@ -16,8 +16,8 @@ use tauri_runtime::{
     dpi::{LogicalPosition, LogicalSize, PhysicalPosition, PhysicalSize, Position, Size},
     DetachedWindow, JsEventListenerKey, PendingWindow, WindowEvent,
   },
-  ClipboardManager, Dispatch, Error, ExitRequestedEventAction, GlobalShortcutManager, Icon, Result,
-  RunEvent, RunIteration, Runtime, RuntimeHandle, UserAttentionType,
+  ClipboardManager, Dispatch, Error, ExitRequestedEventAction, GlobalShortcutManager, Result,
+  RunEvent, RunIteration, Runtime, RuntimeHandle, UserAttentionType, WindowIcon,
 };
 
 use tauri_runtime::window::MenuEvent;
@@ -56,7 +56,7 @@ use wry::{
       MenuItemAttributes as WryMenuItemAttributes, MenuType,
     },
     monitor::MonitorHandle,
-    window::{Fullscreen, Icon as WindowIcon, UserAttentionType as WryUserAttentionType},
+    window::{Fullscreen, Icon as WryWindowIcon, UserAttentionType as WryUserAttentionType},
   },
   http::{
     Request as WryHttpRequest, RequestParts as WryRequestParts, Response as WryHttpResponse,
@@ -84,7 +84,6 @@ use std::{
     HashMap, HashSet,
   },
   fmt,
-  fs::read,
   ops::Deref,
   path::PathBuf,
   sync::{
@@ -482,52 +481,18 @@ impl ClipboardManager for ClipboardManagerWrapper {
 }
 
 /// Wrapper around a [`wry::application::window::Icon`] that can be created from an [`Icon`].
-pub struct WryIcon(WindowIcon);
+pub struct WryIcon(WryWindowIcon);
 
 fn icon_err<E: std::error::Error + Send + 'static>(e: E) -> Error {
   Error::InvalidIcon(Box::new(e))
 }
 
-impl TryFrom<Icon> for WryIcon {
+impl TryFrom<WindowIcon> for WryIcon {
   type Error = Error;
-  fn try_from(icon: Icon) -> std::result::Result<Self, Self::Error> {
-    let image_bytes = match icon {
-      Icon::File(path) => read(path).map_err(icon_err)?,
-      Icon::Raw(raw) => raw,
-      _ => unimplemented!(),
-    };
-    let extension = infer::get(&image_bytes)
-      .expect("could not determine icon extension")
-      .extension();
-    match extension {
-      #[cfg(windows)]
-      "ico" => {
-        let icon_dir = ico::IconDir::read(std::io::Cursor::new(image_bytes)).map_err(icon_err)?;
-        let entry = &icon_dir.entries()[0];
-        let icon = WindowIcon::from_rgba(
-          entry.decode().map_err(icon_err)?.rgba_data().to_vec(),
-          entry.width(),
-          entry.height(),
-        )
-        .map_err(icon_err)?;
-        Ok(Self(icon))
-      }
-      #[cfg(target_os = "linux")]
-      "png" => {
-        let decoder = png::Decoder::new(std::io::Cursor::new(image_bytes));
-        let (info, mut reader) = decoder.read_info().map_err(icon_err)?;
-        let mut buffer = Vec::new();
-        while let Ok(Some(row)) = reader.next_row() {
-          buffer.extend(row);
-        }
-        let icon = WindowIcon::from_rgba(buffer, info.width, info.height).map_err(icon_err)?;
-        Ok(Self(icon))
-      }
-      _ => panic!(
-        "image `{}` extension not supported; please file a Tauri feature request",
-        extension
-      ),
-    }
+  fn try_from(icon: WindowIcon) -> std::result::Result<Self, Self::Error> {
+    WryWindowIcon::from_rgba(icon.rgba, icon.width, icon.height)
+      .map(Self)
+      .map_err(icon_err)
   }
 }
 
@@ -851,7 +816,7 @@ impl WindowBuilder for WindowBuilderWrapper {
     self
   }
 
-  fn icon(mut self, icon: Icon) -> Result<Self> {
+  fn icon(mut self, icon: WindowIcon) -> Result<Self> {
     self.inner = self
       .inner
       .with_window_icon(Some(WryIcon::try_from(icon)?.0));
@@ -975,7 +940,7 @@ pub enum WindowMessage {
   SetPosition(Position),
   SetFullscreen(bool),
   SetFocus,
-  SetIcon(WindowIcon),
+  SetIcon(WryWindowIcon),
   SetSkipTaskbar(bool),
   DragWindow,
   UpdateMenuItem(u16, MenuUpdate),
@@ -1001,7 +966,7 @@ pub enum WebviewEvent {
 pub enum TrayMessage {
   UpdateItem(u16, MenuUpdate),
   UpdateMenu(SystemTrayMenu),
-  UpdateIcon(Icon),
+  UpdateIcon(TrayIcon),
   #[cfg(target_os = "macos")]
   UpdateIconAsTemplate(bool),
   Close,
@@ -1392,7 +1357,7 @@ impl Dispatch for WryDispatcher {
     )
   }
 
-  fn set_icon(&self, icon: Icon) -> Result<()> {
+  fn set_icon(&self, icon: WindowIcon) -> Result<()> {
     send_user_message(
       &self.context,
       Message::Window(
@@ -1790,7 +1755,7 @@ impl Runtime for Wry {
     let icon = system_tray
       .icon
       .expect("tray icon not set")
-      .into_tray_icon();
+      .into_platform_icon();
 
     let mut items = HashMap::new();
 
@@ -2208,7 +2173,7 @@ fn handle_user_message(
       }
       TrayMessage::UpdateIcon(icon) => {
         if let Some(tray) = &*tray_context.tray.lock().unwrap() {
-          tray.lock().unwrap().set_icon(icon.into_tray_icon());
+          tray.lock().unwrap().set_icon(icon.into_platform_icon());
         }
       }
       #[cfg(target_os = "macos")]

core/tauri-runtime-wry/src/system_tray.rs

@@ -7,7 +7,7 @@ pub use tauri_runtime::{
     Menu, MenuEntry, MenuItem, MenuUpdate, Submenu, SystemTrayMenu, SystemTrayMenuEntry,
     SystemTrayMenuItem, TrayHandle,
   },
-  Icon, SystemTrayEvent,
+  SystemTrayEvent, TrayIcon,
 };
 pub use wry::application::{
   event::TrayEvent,
@@ -41,7 +41,7 @@ pub struct SystemTrayHandle {
 }
 
 impl TrayHandle for SystemTrayHandle {
-  fn set_icon(&self, icon: Icon) -> Result<()> {
+  fn set_icon(&self, icon: TrayIcon) -> Result<()> {
     self
       .proxy
       .send_event(Message::Tray(TrayMessage::UpdateIcon(icon)))