cargo: Remove gtk-macros dependency

Using the crate is depreacted. Replaced spawn! macro
with our own spawn function

src/widgets/image.rs

@@ -35,10 +35,10 @@ use crate::i18n::i18n;
 use crate::image_metadata::LpImageMetadata;
 use crate::util::Gesture;
 
+use crate::util::spawn;
 use adw::{prelude::*, subclass::prelude::*};
 use arc_swap::ArcSwap;
 use futures::prelude::*;
-use gtk_macros::spawn;
 use once_cell::sync::Lazy;
 use once_cell::unsync::OnceCell;
 
@@ -765,7 +765,7 @@ impl LpImage {
         };
 
         let weak_obj = self.downgrade();
-        spawn!(async move {
+        spawn(async move {
             while let Some(update) = decoder_update.next().await {
                 if let Some(obj) = weak_obj.upgrade() {
                     obj.update(update);
@@ -811,7 +811,7 @@ impl LpImage {
                     new_tiles
                 });
                 if imp.background_color.borrow().is_none() {
-                    spawn!(glib::clone!(@weak self as obj => async move {
+                    spawn(glib::clone!(@weak self as obj => async move {
                         let color = obj.background_color_guess().await;
                         obj.set_background_color(color);
                         if obj.is_mapped() {
@@ -962,7 +962,9 @@ impl LpImage {
                 let obj = self.clone();
                 let file = file_a.clone();
                 // TODO: error handling is missing
-                spawn! {async move { obj.load(&file.path().unwrap()).await; }};
+                spawn(async move {
+                    obj.load(&file.path().unwrap()).await;
+                });
             }
             gio::FileMonitorEvent::Deleted
             | gio::FileMonitorEvent::MovedOut

src/widgets/image_page.rs

@@ -24,11 +24,11 @@
 use crate::deps::*;
 use crate::widgets::LpImage;
 
+use crate::util::spawn;
 use adw::subclass::prelude::*;
 use glib::clone;
 use gtk::prelude::*;
 use gtk::CompositeTemplate;
-use gtk_macros::spawn;
 use once_cell::sync::Lazy;
 
 use std::path::{Path, PathBuf};
@@ -155,7 +155,7 @@ impl LpImagePage {
 
         obj.imp().image.set_file(&file);
 
-        spawn!(clone!(@weak obj, @strong path => async move {
+        spawn(clone!(@weak obj, @strong path => async move {
             let imp = obj.imp();
             imp.image.load(&path).await;
         }));

src/widgets/image_view.rs

@@ -31,6 +31,7 @@ use crate::i18n::*;
 use crate::util::{Direction, Position};
 use crate::widgets::{LpImage, LpImagePage, LpSlidingView};
 
+use crate::util::spawn;
 use adw::prelude::*;
 use adw::subclass::prelude::*;
 use anyhow::Context;
@@ -40,7 +41,6 @@ use ashpd::Error;
 use ashpd::WindowIdentifier;
 use glib::clone;
 use gtk::CompositeTemplate;
-use gtk_macros::spawn;
 use once_cell::sync::Lazy;
 
 use std::cell::{Cell, RefCell};
@@ -268,7 +268,7 @@ impl LpImageView {
         // List other files in directory
         if let Some(directory) = directory {
             let path = path.to_path_buf();
-            spawn!(glib::clone!(@weak self as obj, @strong path => async move {
+            spawn(glib::clone!(@weak self as obj, @strong path => async move {
                 if let Err(err) = obj.model().load_directory(directory).await {
                     log::warn!("Failed to load directory: {err}");
                     obj.activate_action("win.show-toast", Some(&(err.to_string(), 1).to_variant()))

src/widgets/properties_view.rs

@@ -30,7 +30,7 @@ use futures::future::{AbortHandle, Abortable};
 use once_cell::sync::Lazy;
 use std::cell::RefCell;
 
-use gtk_macros::spawn;
+use crate::util::spawn;
 
 use crate::image_metadata::LpImageMetadata;
 use crate::widgets::image::LpImage;
@@ -234,7 +234,7 @@ impl LpPropertiesView {
         imp.info_handle.replace(Some(handle));
 
         // ...then spawn the future.
-        spawn!(async {
+        spawn(async {
             let _ = fut.await;
         });
     }