1 files changed, 116 insertions, 0 deletions
diff --git a/src/player/AppleTrackpadInputDevice.cpp b/src/player/AppleTrackpadInputDevice.cpp
new file mode 100644
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--- /dev/null
+++ b/src/player/AppleTrackpadInputDevice.cpp
@@ -0,0 +1,116 @@
+//
+//  libavg - Media Playback Engine. 
+//  Copyright (C) 2003-2014 Ulrich von Zadow
+//
+//  This library is free software; you can redistribute it and/or
+//  modify it under the terms of the GNU Lesser General Public
+//  License as published by the Free Software Foundation; either
+//  version 2 of the License, or (at your option) any later version.
+//
+//  This library is distributed in the hope that it will be useful,
+//  but WITHOUT ANY WARRANTY; without even the implied warranty of
+//  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+//  Lesser General Public License for more details.
+//
+//  You should have received a copy of the GNU Lesser General Public
+//  License along with this library; if not, write to the Free Software
+//  Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
+//
+//  Current versions can be found at www.libavg.de
+//
+
+#include "AppleTrackpadInputDevice.h"
+#include "TouchEvent.h"
+#include "Player.h"
+#include "AVGNode.h"
+#include "TouchStatus.h"
+
+#include "../base/Logger.h"
+#include "../base/ObjectCounter.h"
+#include "../base/Exception.h"
+
+#include <CoreFoundation/CoreFoundation.h>
+
+using namespace std;
+
+namespace avg {
+
+AppleTrackpadInputDevice* AppleTrackpadInputDevice::s_pInstance(0);
+
+AppleTrackpadInputDevice::AppleTrackpadInputDevice()
+    : m_LastID(0)
+{
+    s_pInstance = this;
+}
+
+AppleTrackpadInputDevice::~AppleTrackpadInputDevice()
+{
+    MTDeviceStop(m_Device);
+    MTUnregisterContactFrameCallback(m_Device, callback);
+    MTDeviceRelease(m_Device);
+    s_pInstance = 0;
+}
+
+void AppleTrackpadInputDevice::start()
+{
+    MultitouchInputDevice::start();
+    m_Device = MTDeviceCreateDefault();
+    MTRegisterContactFrameCallback(m_Device, callback);
+    MTDeviceStart(m_Device, 0);
+    AVG_TRACE(Logger::category::CONFIG, Logger::severity::INFO,
+            "Apple Trackpad Multitouch event source created.");
+}
+
+void AppleTrackpadInputDevice::onData(int device, Finger* pFingers, int numFingers, 
+        float timestamp, int frame)
+{
+    lock_guard lock(getMutex());
+    for (int i = 0; i < numFingers; i++) {
+        Finger* pFinger = &pFingers[i];
+        TouchStatusPtr pTouchStatus = getTouchStatus(pFinger->identifier);
+        if (!pTouchStatus) {
+            m_LastID++;
+            TouchEventPtr pEvent = createEvent(m_LastID, pFinger, Event::CURSOR_DOWN);
+            addTouchStatus(pFinger->identifier, pEvent);
+        } else {
+            Event::Type eventType;
+            if (pFinger->state == 7) {
+                eventType = Event::CURSOR_UP;
+                removeTouchStatus(pFinger->identifier);
+            } else {
+                eventType = Event::CURSOR_MOTION;
+            }
+            TouchEventPtr pEvent = createEvent(0, pFinger, eventType);
+            pTouchStatus->pushEvent(pEvent);
+        }
+    }
+}
+
+int AppleTrackpadInputDevice::callback(int device, Finger *data, int nFingers, 
+        double timestamp, int frame) 
+{
+    AVG_ASSERT(s_pInstance != 0);
+    s_pInstance->onData(device, data, nFingers, timestamp, frame);
+    return 0;
+}
+
+TouchEventPtr AppleTrackpadInputDevice::createEvent(int avgID, Finger* pFinger, 
+        Event::Type eventType)
+{
+    glm::vec2 size = getTouchArea();
+    IntPoint pos = getScreenPos(glm::vec2(pFinger->normalized.pos.x,
+            1-pFinger->normalized.pos.y));
+    glm::vec2 speed(pFinger->normalized.vel.x*size.x, pFinger->normalized.vel.y*size.y);
+    float eccentricity = pFinger->majorAxis/pFinger->minorAxis;
+    glm::vec2 majorAxis = fromPolar(pFinger->angle, pFinger->majorAxis);
+    majorAxis.y = -majorAxis.y;
+    glm::vec2 minorAxis = fromPolar(pFinger->angle+1.57, pFinger->minorAxis);
+    minorAxis.y = -minorAxis.y;
+
+    TouchEventPtr pEvent(new TouchEvent(avgID, eventType, pos, Event::TOUCH,
+                speed, pFinger->angle, pFinger->size, eccentricity, majorAxis, 
+                minorAxis)); 
+    return pEvent;
+}
+
+}