Question

我试图在OS X上实现触摸手势事件的模拟/生成。我尝试这样的事情，但它不起作用：

void touch_begin_gesture(float x, float y) {

    /**
     * create a new empty Quartz event
     */
    CGEventRef begin_gesture_event = CGEventCreate(NULL);

    /**
     * fill created Quartz event
     */
    CGEventSetType(begin_gesture_event, TouchEventTypeBeginGesture);
    CGEventSetLocation(begin_gesture_event, CGPointMake(x, y));

    /**
     * post a Quartz event into the event stream at a specified location.
     */
    CGEventPost(kCGHIDEventTap, begin_gesture_event);

    /**
     * release Quartz event
     */
    CFRelease(begin_gesture_event);
}

void touch_end_gesture(float x, float y) {

    /**
     * create a new empty Quartz event
     */
    CGEventRef end_gesture_event = CGEventCreate(NULL);

    /**
     * fill created Quartz event
     */
    CGEventSetType(end_gesture_event, TouchEventTypeEndGesture);
    CGEventSetLocation(end_gesture_event, CGPointMake(x, y));

    /**
     * post a Quartz event into the event stream at a specified location.
     */
    CGEventPost(kCGHIDEventTap, end_gesture_event);

    /**
     * release Quartz event
     */
    CFRelease(end_gesture_event);
}

void touch_pinch_gesture_at(float magnification, float x, float y) {

    /**
     * create a new empty Quartz event
     */
    CGEventRef magnify_gesture_event = CGEventCreate(NULL);

    /**
     * fill created Quartz event
     */
    CGEventSetType(magnify_gesture_event, TouchEventTypeMagnify);
    CGEventSetLocation(magnify_gesture_event, CGPointMake(x, y));

    /**
     * post a Quartz event into the event stream at a specified location.
     */
    CGEventPost(kCGHIDEventTap, magnify_gesture_event);

    /**
     * release Quartz event
     */
    CFRelease(magnify_gesture_event);
}

以下是常数：

enum {
    TouchEventTypeGesture = 29,
    TouchEventTypeMagnify = 30, // pinch
    TouchEventTypeSwipe = 31,   // swipe
    TouchEventTypeRotate = 18,  // rotate
    TouchEventTypeBeginGesture = 19,
    TouchEventTypeEndGesture = 20,
    TouchEventTypeSmartMagnify = 32,
    TouchEventTypeQuickLook = 33,
    TouchEventTypePressure = 34
};

void touch_begin_gesture(float x, float y);
void touch_end_gesture(float x, float y);
void touch_pinch_gesture(float magnification);
void touch_pinch_gesture_at(float magnification, float x, float y);

我使用这个调用：

int main() {

    touch_begin_gesture(350, 350);

    touch_pinch_gesture_at(1.5, 400, 400);

    touch_end_gesture(450, 450);

    return 0;
}

我认为这样的触摸事件是如何产生的？如何设置此放大，旋转，滑动方向值。有什么文件吗？有人试过这个吗？我发现stackoverflow类似的问题，但没有正确的答案而且更老。如果没有Objective-C，我可以用清晰的C语言实现吗？

OS X使用Quartz事件服务生成/模拟触摸手势：捏合，旋转，滑动等。

0 个答案: