setApplicationIconImage - OS X

Question

我在OS X的js-ctypes中成功定义了setAppliactionIconImage，但我无法弄清楚如何使用它。请帮我使用。

https://developer.apple.com/library/mac/documentation/Carbon/Conceptual/customizing_docktile/docktasks_cocoa/docktasks_cocoa.html

我试图只是简单地定义它：从早在十二月

Components.utils.import("resource://gre/modules/ctypes.jsm"); 
let objc = ctypes.open(ctypes.libraryName("objc")); 

let id = ctypes.voidptr_t; 
let SEL = ctypes.voidptr_t; 
let objc_getClass = objc.declare("objc_getClass", ctypes.default_abi, id, ctypes.char.ptr); 
let sel_registerName = objc.declare("sel_registerName", ctypes.default_abi, SEL, ctypes.char.ptr); 
let objc_msgSend = objc.declare("objc_msgSend", ctypes.default_abi, id, id, SEL, "..."); 
let myImage = objc_getClass("NSImage"); //[NSImage imageNamed: @"ChangedIcon"]; 

let setApplicationIconImage = sel_registerName("setApplicationIconImage:") //[NSApp setApplicationIconImage: myImage]; 


// pool = [[NSAutoreleasePool alloc] init] 
let NSAutoreleasePool = objc_getClass("NSAutoreleasePool"); 
let alloc = sel_registerName("alloc"); 
let init = sel_registerName("init"); 
let pool = objc_msgSend(objc_msgSend(NSAutoreleasePool, alloc), init); 




// do setting of image between init and release 




// [pool mouseLocation] 
let release = sel_registerName("release"); 
objc_msgSend(pool, release); 

objc.close(); 

Answer 1

解决方案，想分享一下，这个人是由于@arai

"use strict"; 

let { utils: Cu } = Components; 
let { ctypes } = Cu.import("resource://gre/modules/ctypes.jsm", {}); 
let { OS } = Cu.import("resource://gre/modules/osfile.jsm", {}); 

/* **** please replace following string before run **** */ 
let IMAGE_PATH = "absolute path to image file"; 

OS.File.read(IMAGE_PATH).then(function(iconData) { 
    // NOTE: iconData is Uint8Array 
    let length = ctypes.unsigned_long(iconData.length); 
    let bytes = ctypes.uint8_t.array()(iconData); 

    let objc = ctypes.open(ctypes.libraryName("objc")); 

    let id = ctypes.voidptr_t; 
    let SEL = ctypes.voidptr_t; 
    let objc_getClass = objc.declare("objc_getClass", 
            ctypes.default_abi, 
            id, 
            ctypes.char.ptr); 
    let sel_registerName = objc.declare("sel_registerName", 
             ctypes.default_abi, 
             SEL, 
             ctypes.char.ptr); 
    let objc_msgSend = objc.declare("objc_msgSend", 
            ctypes.default_abi, 
            id, 
            id, 
            SEL, 
            "..."); 

    // NSApp = [NSApplication sharedApplication]; 
    let NSApplication = objc_getClass("NSApplication"); 
    let sharedApplication = sel_registerName("sharedApplication"); 
    let NSApp = objc_msgSend(NSApplication, sharedApplication); 

    // data = [NSData dataWithBytes: bytes length: length]; 
    let NSData = objc_getClass("NSData"); 
    let dataWithBytes_length = sel_registerName("dataWithBytes:length:"); 
    let data = objc_msgSend(NSData, dataWithBytes_length, bytes, length); 

    // icon = [[NSImage alloc] initWithData: data]; 
    let NSImage = objc_getClass("NSImage"); 
    let initWithData = sel_registerName("initWithData:"); 
    let alloc = sel_registerName("alloc"); 
    let icon = objc_msgSend(objc_msgSend(NSImage, alloc), initWithData, data); 

    if (icon.isNull()) { 
    throw new Error("Image file is corrupted."); 
    } 

    // [NSApp setApplicationIconImage: icon] 
    let setApplicationIconImage = sel_registerName("setApplicationIconImage:"); 
    objc_msgSend(NSApp, setApplicationIconImage, icon); 

    // [icon release] 
    let release = sel_registerName("release"); 
    objc_msgSend(icon, release); 

    objc.close(); 
}, function(e) { 
    console.log("Failed to read from file:", e); 
}).catch(function(e) { 
    console.log(e); 
});