image-viewer: Add KP_Add and KP_Subtract for zoom

Enable zoom-in/out using the keypad Add and Subtract keys.

Author: darkowlzz

extensions/image_viewer/callbacks.c

@@ -31,7 +31,9 @@
 static const GthShortcut shortcuts[] = {
 	{ "image-zoom-in", N_("Zoom in"), GTH_SHORTCUT_CONTEXT_VIEWER, GTH_SHORTCUT_CATEGORY_IMAGE_VIEWER, "plus" },
 	{ "image-zoom-in", N_("Zoom in"), GTH_SHORTCUT_CONTEXT_VIEWER, GTH_SHORTCUT_CATEGORY_IMAGE_VIEWER, "equal" },
+	{ "image-zoom-in", N_("Zoom in"), GTH_SHORTCUT_CONTEXT_VIEWER, GTH_SHORTCUT_CATEGORY_IMAGE_VIEWER, "KP_Add" },
 	{ "image-zoom-out", N_("Zoom out"), GTH_SHORTCUT_CONTEXT_VIEWER, GTH_SHORTCUT_CATEGORY_IMAGE_VIEWER, "minus" },
+	{ "image-zoom-out", N_("Zoom out"), GTH_SHORTCUT_CONTEXT_VIEWER, GTH_SHORTCUT_CATEGORY_IMAGE_VIEWER, "KP_Subtract" },
 	{ "image-zoom-100", N_("Zoom 100%"), GTH_SHORTCUT_CONTEXT_VIEWER, GTH_SHORTCUT_CATEGORY_IMAGE_VIEWER, "1" },
 	{ "image-zoom-200", N_("Zoom 200%"), GTH_SHORTCUT_CONTEXT_VIEWER, GTH_SHORTCUT_CATEGORY_IMAGE_VIEWER, "2" },
 	{ "image-zoom-300", N_("Zoom 300%"), GTH_SHORTCUT_CONTEXT_VIEWER, GTH_SHORTCUT_CATEGORY_IMAGE_VIEWER, "3" },