GSSendEvent - 注入触摸事件 iOS

Question

我想在 iPhone 中注入触摸事件。我通过网络套接字获取触摸事件的坐标。 GSSendEvent 似乎是不错的选择。但是，它需要 GSEventRecord 作为输入之一。

有人知道如何准备 GSEventRecord 吗？我根据一些示例进行了准备，但在 GSSendEvent 调用后应用程序崩溃了。

感谢任何帮助。

-(void) handleMouseEventAtPoint:(CGPoint) point
{
static mach_port_t port_;

// structure of touch GSEvent
struct GSTouchEvent {
    GSEventRecord record;
    GSHandInfo    handInfo;
} ;

struct GSTouchEvent *touchEvent = (struct GSTouchEvent *) malloc(sizeof(struct GSTouchEvent));

bzero(touchEvent, sizeof(touchEvent));

// set up GSEvent
touchEvent->record.type = kGSEventHand;
touchEvent->record.windowLocation = point;
touchEvent->record.timestamp = GSCurrentEventTimestamp();
touchEvent->record.infoSize = sizeof(GSHandInfo) + sizeof(GSPathInfo);
touchEvent->handInfo.type = getHandInfoType(0, 1);
touchEvent->handInfo.pathInfosCount = 1;
bzero(&touchEvent->handInfo.pathInfos[0], sizeof(GSPathInfo));
touchEvent->handInfo.pathInfos[0].pathIndex     = 1;
touchEvent->handInfo.pathInfos[0].pathIdentity  = 2;
touchEvent->handInfo.pathInfos[0].pathProximity = 1 ? 0x03 : 0x00;
touchEvent->handInfo.pathInfos[0].pathLocation  = point;

port_ = GSGetPurpleSystemEventPort();

GSSendEvent((GSEventRecord*)touchEvent ,port_);


}
static GSHandInfoType getHandInfoType(int touch_before, int touch_now){
if (!touch_before) {
    return (GSHandInfoType) kGSHandInfoType2TouchDown;
}
if (touch_now) {
    return (GSHandInfoType) kGSHandInfoType2TouchChange;
}
return (GSHandInfoType) kGSHandInfoType2TouchFinal;
}

Answer 1

仅在 iOS 6 上测试

你实际上是在正确的轨道上。问题是您必须弄清楚应该为这些变量分配什么值。

首先，您需要导入 GraphicsServices.h。然后，您可以使用可以从How to find the purple port for the front most application in IOS 5 and above? 获取的端口尝试以下代码。

我不是 iOS 专家，Apple 不提供任何文档，所以我无法解释这里发生了什么。 （它恰好对我有用。）

无论如何，您可以使用 xcode 调试模式来使用它，看看引擎盖下会发生什么。

struct GSTouchEvent * touchEvent = (struct GSTouchEvent*) &gsTouchEvent;
bzero(touchEvent, sizeof(touchEvent));
touchEvent->record.type = kGSEventHand;
touchEvent->record.subtype = kGSEventSubTypeUnknown;
touchEvent->record.location = point;
touchEvent->record.windowLocation = point;
touchEvent->record.infoSize = sizeof(GSHandInfo) + sizeof(GSPathInfo);
touchEvent->record.timestamp = GSCurrentEventTimestamp();
touchEvent->record.window = winRef;
touchEvent->record.senderPID = 919;
bzero(&touchEvent->handInfo, sizeof(GSHandInfo));
bzero(&touchEvent->handInfo.pathInfos[0], sizeof(GSPathInfo));
GSHandInfo touchEventHandInfo;
touchEventHandInfo._0x5C = 0;
touchEventHandInfo.deltaX = 0;
touchEventHandInfo.deltaY = 0;
touchEventHandInfo.height = 0;
touchEventHandInfo.width = 0;
touchEvent->handInfo = touchEventHandInfo;
touchEvent->handInfo.type = handInfoType;
touchEvent->handInfo.deltaX = 1;
touchEvent->handInfo.deltaY = 1;
touchEvent->handInfo.pathInfosCount = 0;
touchEvent->handInfo.pathInfos[0].pathIndex = 1;
touchEvent->handInfo.pathInfos[0].pathIdentity = 2;
touchEvent->handInfo.pathInfos[0].pathProximity = (handInfoType == kGSHandInfoTypeTouchDown || handInfoType == kGSHandInfoTypeTouchDragged || handInfoType == kGSHandInfoTypeTouchMoved) ? 0x03: 0x00;
touchEvent->handInfo.x52 = 1;
touchEvent->handInfo.pathInfos[0].pathLocation = point;
touchEvent->handInfo.pathInfos[0].pathWindow = winRef;
GSEventRecord* record = (GSEventRecord*) touchEvent;
record->timestamp = GSCurrentEventTimestamp();
GSSendEvent(record, port);

要使用此代码，您必须多次调用它。一键式有触地、触拖、触上。

还请注意，触摸时 pathProximity 为 0。

据我所知，winRef 无关紧要。

希望这会有所帮助。

编辑：从 Bugivore 的评论来看，问题是：

我通过 malloc 分配 touchEvent 的方式是错误的。应该按照 EntryLevelDev 显示的方式完成 - “static uint8_t handJob[sizeof(GSEventRecord) + sizeof(GSHandInfo) + sizeof(GSPathInfo)];”

Answer 2

EntryLevelDev 的回答是正确的，但有些价值并不那么重要。我从其他地方得到了以下代码，并做了一些尝试和错误，这是我的代码（适用于最新的 ios6）。

现在有人在为 IOS7 做这个吗？我无法让它工作。在这里查看我的帖子：With GSCopyPurpleNamedPort(appId) in GraphicsServices deprecated in IOS7, what is the alternative approach?

static int prev_click = 0;

if (!click && !prev_click)
{
    //which should never enter
    NSLog(@"***error, postHandEvent cancel");
    return;
}

CGPoint location = CGPointMake(x, y);

struct GSTouchEvent {
    GSEventRecord record;
    GSHandInfo    handInfo;
} * event = (struct GSTouchEvent*) &touchEvent;
bzero(touchEvent, sizeof(touchEvent));

event->record.type = kGSEventHand;
event->record.windowLocation = location;
event->record.timestamp = GSCurrentEventTimestamp();
//NSLog(@"Timestamp GSCurrentEventTimestamp: %llu",GSCurrentEventTimestamp());
event->record.infoSize = sizeof(GSHandInfo) + sizeof(GSPathInfo);
event->handInfo.type = getHandInfoType(prev_click, click);

//must have the following line
event->handInfo.x52 = 1;

//below line is for ios4
//event->handInfo.pathInfosCount = 1;


bzero(&event->handInfo.pathInfos[0], sizeof(GSPathInfo));
event->handInfo.pathInfos[0].pathIndex     = 2;
//following 2 lines, they are by default
event->handInfo.pathInfos[0].pathMajorRadius = 1.0;
event->handInfo.pathInfos[0].pathPressure = 1.0;

//event->handInfo.pathInfos[0].pathIdentity  = 2;
event->handInfo.pathInfos[0].pathProximity = click ? 0x03 : 0x00;
//event->handInfo.pathInfos[0].pathProximity = action;
event->handInfo.pathInfos[0].pathLocation  = location;

// send GSEvent 
GSEventRecord *event1 = (GSEventRecord*) event;
sendGSEvent(event1);