From 20f84144b3e9d0b8fdf2798cbfe3c831a3286300 Mon Sep 17 00:00:00 2001
From: Kleis Auke Wolthuizen <github@kleisauke.nl>
Date: Sun, 28 Jan 2024 20:08:42 +0100
Subject: [PATCH] Add `image.kill` property accessor

Handy for stopping long-running computations.
---
 CHANGELOG.md             | 1 +
 build/preamble_vips.d.ts | 5 +++++
 lib/vips.d.ts            | 5 +++++
 src/bindings/image.h     | 8 ++++++++
 src/vips-emscripten.cpp  | 1 +
 5 files changed, 20 insertions(+)

diff --git a/CHANGELOG.md b/CHANGELOG.md
index 12a1d7623..e245d9d1e 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -12,6 +12,7 @@ Uses libvips v8.15.1, compiled with Emscripten v3.1.52.
 
 - Add `image.onProgress` callback for progress feedback.
   [#63](https://github.com/kleisauke/wasm-vips/issues/63)
+- Add `image.kill` property accessor to block evaluation.
 
 ## [v0.0.7] - 2023-11-12
 
diff --git a/build/preamble_vips.d.ts b/build/preamble_vips.d.ts
index 14051743b..2f743d4f7 100644
--- a/build/preamble_vips.d.ts
+++ b/build/preamble_vips.d.ts
@@ -506,6 +506,11 @@ declare module Vips {
          */
         readonly filename: string;
 
+        /**
+         * Block evaluation on this image.
+         */
+        kill: boolean;
+
         /**
          * Attach progress feedback.
          *
diff --git a/lib/vips.d.ts b/lib/vips.d.ts
index 5d258390b..feb01a746 100644
--- a/lib/vips.d.ts
+++ b/lib/vips.d.ts
@@ -506,6 +506,11 @@ declare module Vips {
          */
         readonly filename: string;
 
+        /**
+         * Block evaluation on this image.
+         */
+        kill: boolean;
+
         /**
          * Attach progress feedback.
          *
diff --git a/src/bindings/image.h b/src/bindings/image.h
index cbfcaa1db..b535b4d49 100644
--- a/src/bindings/image.h
+++ b/src/bindings/image.h
@@ -82,6 +82,14 @@ class Image : public Object {
         return vips_image_get_filename(get_image());
     }
 
+    bool is_killed() const {
+        return vips_image_iskilled(get_image());
+    }
+
+    void set_kill(bool kill) {
+        vips_image_set_kill(get_image(), kill ? 1 : 0);
+    }
+
     static void eval_handler(VipsImage *image, VipsProgress *progress,
                              void *user);
 
diff --git a/src/vips-emscripten.cpp b/src/vips-emscripten.cpp
index 343bc951b..b33d9b407 100644
--- a/src/vips-emscripten.cpp
+++ b/src/vips-emscripten.cpp
@@ -1105,6 +1105,7 @@ EMSCRIPTEN_BINDINGS(my_module) {
         .property("yres", &Image::yres)
         .property("filename", &Image::filename)
         // Handwritten setters
+        .property("kill", &Image::is_killed, &Image::set_kill)
         .property("onProgress", &Image::stub_getter,
                   &Image::set_progress_callback)
         // Auto-generated (class-)functions