fix load cancel

see #58

thanks @keyboqrd

Author: jcupitt

CHANGELOG.md

@@ -1,5 +1,9 @@
 master
 
+## 4.1.3 24/09/25
+
+- fix load cancel [keyboqrd]
+
 ## 4.1.2 02/08/25
 
 - add an icon to the exe on windows

meson.build

@@ -1,5 +1,5 @@
 project('vipsdisp', 'c',
-  version: '4.1.2',
+  version: '4.1.3',
   license: 'MIT',
   meson_version: '>=0.56',
   default_options: [

src/imagewindow.c

@@ -853,7 +853,7 @@ imagewindow_cancel_clicked(GtkWidget *button, Imagewindow *win)
 	VipsImage *image;
 
 	if ((tilesource = imagewindow_get_tilesource(win)) &&
-		(image = tilesource_get_image(tilesource)))
+		(image = tilesource_get_base_image(tilesource)))
 		vips_image_set_kill(image, TRUE);
 }
 

src/tilesource.c

@@ -1930,6 +1930,15 @@ tilesource_request_tile(Tilesource *tilesource, Tile *tile)
 		tile->region->valid.left, tile->region->valid.top);
 #endif /*DEBUG_VERBOSE*/
 
+	/* Load was cancelled, perhaps.
+	 */
+	if (tilesource->load_error) {
+		vips_error("Fetch tile", _("Unable to load image\n%s"), 
+			tilesource->load_message);
+
+		return -1;
+	}
+
 	/* Change z if necessary.
 	 */
 	if (tilesource->current_z != tile->z ||