(操作系统X)在程序化鼠标单击过程中阻止键盘



我正在尝试将keynav移植到OS X。它基本上可以工作,但由于无法更改(全局)监控的事件,我面临着一个问题。

是否可以在鼠标单击事件期间抑制键盘修饰符?也许使用一个序列,例如用"控制键向上"+鼠标点击创建键盘事件?

这是我的鼠标点击方法:

- (void)clickMouseAtPoint:(CGPoint)point
{
    CGEventRef move = CGEventCreateMouseEvent(
                                               NULL, kCGEventMouseMoved,
                                               point,
                                               kCGMouseButtonLeft // ignored
                                               );
    CGEventRef click1_down = CGEventCreateMouseEvent(
                                                     NULL, kCGEventLeftMouseDown,
                                                     point,
                                                     kCGMouseButtonLeft
                                                     );
    CGEventRef click1_up = CGEventCreateMouseEvent(
                                                   NULL, kCGEventLeftMouseUp,
                                                   point,
                                                   kCGMouseButtonLeft
                                                   );
    CGEventPost(kCGHIDEventTap, move);
    CGEventPost(kCGHIDEventTap, click1_down);
    CGEventPost(kCGHIDEventTap, click1_up);
    CFRelease(click1_up);
    CFRelease(click1_down);
    CFRelease(move1);
}

所以这就是我最终得到的结果。特别是这里所做的背景:当按下ctrl+comma时,keynav覆盖在整个桌面上,用户可以使用按住ctrl+SomeKeys导航十字光标,并模拟鼠标在十字光标位置单击第二个ctrl+ccomma(在下面的代码片段中等待第二次单击时设置awaitClick)。

现在,在单击完成之前,控制键修饰符将从键盘事件中删除。此外,当显示keynav时,所有键盘输入都用keycode-1交换。我通过实验发现,这可以抑制按键。

这是不是一个好方法,我不知道。但到目前为止,它运行可靠。

CGEventRef
myCGEventCallback(CGEventTapProxy proxy, CGEventType type,
                  CGEventRef event, void *refcon)
{
    if ((type != kCGEventKeyDown) && (type != kCGEventKeyUp))
        return event;
    CGKeyCode keycode = (CGKeyCode)CGEventGetIntegerValueField(event, kCGKeyboardEventKeycode);
    EWAppDelegate *appInstance = [NSApplication sharedApplication].delegate;
    CGEventFlags flags = CGEventGetFlags(event);
    if (_awaitClick && keycode == (CGKeyCode)43 && type == kCGEventKeyDown)
    {
        flags = flags & ~kCGEventFlagMaskControl;
        CGEventSetFlags(event, flags);
        NSLog(@"suppressed control key");
    }
    BOOL didHandle = NO;
    if (type == kCGEventKeyDown)
    {
        didHandle = [appInstance handleNavKey:keycode flags:flags];
    }
    NSLog(@"pressed keycode %d", keycode);
    if (didHandle || _navIsSHowing) {
        CGEventSetIntegerValueField(event, kCGKeyboardEventKeycode, (int64_t)-1);
        NSLog(@"nav");
    }
    return event;
}
- (BOOL)registerGlobalKeyBoardModifier
{
    CFMachPortRef      eventTap;
    CGEventMask        eventMask;
    CFRunLoopSourceRef runLoopSource;
    eventMask = ((1 << kCGEventKeyDown) | (1 << kCGEventKeyUp));
    eventTap = CGEventTapCreate(kCGSessionEventTap, kCGHeadInsertEventTap, 0,
                                eventMask, myCGEventCallback, NULL);
    if (!eventTap) {
        fprintf(stderr, "failed to create event tapn");
        return NO;
    }
    runLoopSource = CFMachPortCreateRunLoopSource(
                                                  kCFAllocatorDefault, eventTap, 0);
    CFRunLoopAddSource(CFRunLoopGetCurrent(), runLoopSource,
                       kCFRunLoopCommonModes);
    CGEventTapEnable(eventTap, true);
    return YES;
}

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