mirror of
https://gitlab.winehq.org/wine/wine-gecko.git
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287 lines
7.4 KiB
C++
287 lines
7.4 KiB
C++
/* ***** BEGIN LICENSE BLOCK *****
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* Version: MPL 1.1/GPL 2.0/LGPL 2.1
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*
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* The contents of this file are subject to the Mozilla Public License Version
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* 1.1 (the "License"); you may not use this file except in compliance with
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* the License. You may obtain a copy of the License at
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* http://www.mozilla.org/MPL/
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*
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* Software distributed under the License is distributed on an "AS IS" basis,
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* WITHOUT WARRANTY OF ANY KIND, either express or implied. See the License
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* for the specific language governing rights and limitations under the
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* License.
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*
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* The Original Code is mozilla.org code.
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*
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* The Initial Developer of the Original Code is
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* Doug Turner <dougt@dougt.org>
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* Portions created by the Initial Developer are Copyright (C) 2009
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* the Initial Developer. All Rights Reserved.
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*
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* Contributor(s):
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*
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* Alternatively, the contents of this file may be used under the terms of
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* either the GNU General Public License Version 2 or later (the "GPL"), or
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* the GNU Lesser General Public License Version 2.1 or later (the "LGPL"),
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* in which case the provisions of the GPL or the LGPL are applicable instead
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* of those above. If you wish to allow use of your version of this file only
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* under the terms of either the GPL or the LGPL, and not to allow others to
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* use your version of this file under the terms of the MPL, indicate your
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* decision by deleting the provisions above and replace them with the notice
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* and other provisions required by the GPL or the LGPL. If you do not delete
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* the provisions above, a recipient may use your version of this file under
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* the terms of any one of the MPL, the GPL or the LGPL.
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*
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* ***** END LICENSE BLOCK ***** */
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#include "nsAccelerometer.h"
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#include "nsAutoPtr.h"
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#include "nsIDOMEvent.h"
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#include "nsIDOMWindow.h"
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#include "nsIDOMDocument.h"
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#include "nsIDOMEventTarget.h"
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#include "nsIServiceManager.h"
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#include "nsIPrivateDOMEvent.h"
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#include "nsIDOMDocumentEvent.h"
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#include "nsIDOMOrientationEvent.h"
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#include "nsIServiceManager.h"
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#include "nsIPrefService.h"
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class nsAcceleration : public nsIAcceleration
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{
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public:
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NS_DECL_ISUPPORTS
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NS_DECL_NSIACCELERATION
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nsAcceleration(double x, double y, double z);
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private:
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~nsAcceleration();
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protected:
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/* additional members */
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double mX, mY, mZ;
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};
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/* Implementation file */
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NS_IMPL_ISUPPORTS1(nsAcceleration, nsIAcceleration)
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nsAcceleration::nsAcceleration(double x, double y, double z)
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:mX(x), mY(y), mZ(z)
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{
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}
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nsAcceleration::~nsAcceleration()
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{
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}
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NS_IMETHODIMP nsAcceleration::GetX(double *aX)
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{
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NS_ENSURE_ARG_POINTER(aX);
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*aX = mX;
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return NS_OK;
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}
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NS_IMETHODIMP nsAcceleration::GetY(double *aY)
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{
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NS_ENSURE_ARG_POINTER(aY);
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*aY = mY;
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return NS_OK;
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}
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NS_IMETHODIMP nsAcceleration::GetZ(double *aZ)
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{
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NS_ENSURE_ARG_POINTER(aZ);
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*aZ = mZ;
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return NS_OK;
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}
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NS_IMPL_ISUPPORTS2(nsAccelerometer, nsIAccelerometer, nsIAccelerometerUpdate)
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nsAccelerometer::nsAccelerometer()
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: mLastX(10), /* initialize to values that can't be possible */
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mLastY(10),
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mLastZ(10),
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mStarted(PR_FALSE),
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mNewListener(PR_FALSE),
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mUpdateInterval(50), /* default to 50 ms */
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mEnabled(PR_TRUE)
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{
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nsCOMPtr<nsIPrefBranch> prefSrv = do_GetService(NS_PREFSERVICE_CONTRACTID);
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if (prefSrv) {
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PRInt32 value;
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nsresult rv = prefSrv->GetIntPref("accelerometer.update.interval", &value);
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if (NS_SUCCEEDED(rv))
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mUpdateInterval = value;
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PRBool bvalue;
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rv = prefSrv->GetBoolPref("accelerometer.enabled", &bvalue);
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if (NS_SUCCEEDED(rv) && bvalue == PR_FALSE)
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mEnabled = PR_FALSE;
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}
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}
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nsAccelerometer::~nsAccelerometer()
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{
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if (mTimeoutTimer)
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mTimeoutTimer->Cancel();
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}
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void
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nsAccelerometer::StartDisconnectTimer()
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{
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if (mTimeoutTimer)
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mTimeoutTimer->Cancel();
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mTimeoutTimer = do_CreateInstance("@mozilla.org/timer;1");
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if (mTimeoutTimer)
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mTimeoutTimer->InitWithFuncCallback(TimeoutHandler,
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this,
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2000,
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nsITimer::TYPE_ONE_SHOT);
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}
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void
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nsAccelerometer::TimeoutHandler(nsITimer *aTimer, void *aClosure)
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{
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// the reason that we use self, instead of just using nsITimerCallback or nsIObserver
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// is so that subclasses are free to use timers without worry about the base classes's
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// usage.
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nsAccelerometer *self = reinterpret_cast<nsAccelerometer *>(aClosure);
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if (!self) {
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NS_ERROR("no self");
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return;
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}
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// what about listeners that don't clean up properly? they will leak
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if (self->mListeners.Count() == 0 && self->mWindowListeners.Count() == 0) {
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self->Shutdown();
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self->mStarted = PR_FALSE;
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}
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}
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NS_IMETHODIMP nsAccelerometer::AddListener(nsIAccelerationListener *aListener)
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{
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if (mListeners.IndexOf(aListener) >= 0)
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return NS_OK; // already exists
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if (mStarted == PR_FALSE) {
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mStarted = PR_TRUE;
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mNewListener = PR_TRUE;
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Startup();
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}
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mListeners.AppendObject(aListener);
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return NS_OK;
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}
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NS_IMETHODIMP nsAccelerometer::RemoveListener(nsIAccelerationListener *aListener)
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{
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if (mListeners.IndexOf(aListener) < 0)
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return NS_OK; // doesn't exist
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mListeners.RemoveObject(aListener);
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StartDisconnectTimer();
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return NS_OK;
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}
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NS_IMETHODIMP nsAccelerometer::AddWindowListener(nsIDOMWindow *aWindow)
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{
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if (mWindowListeners.IndexOf(aWindow) >= 0)
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return NS_OK; // already exists
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if (mStarted == PR_FALSE) {
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mStarted = PR_TRUE;
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mNewListener = PR_TRUE;
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Startup();
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}
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mWindowListeners.AppendObject(aWindow);
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return NS_OK;
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}
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NS_IMETHODIMP nsAccelerometer::RemoveWindowListener(nsIDOMWindow *aWindow)
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{
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if (mWindowListeners.IndexOf(aWindow) < 0)
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return NS_OK; // doesn't exist
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mWindowListeners.RemoveObject(aWindow);
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StartDisconnectTimer();
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return NS_OK;
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}
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NS_IMETHODIMP
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nsAccelerometer::AccelerationChanged(double x, double y, double z)
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{
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if (!mEnabled)
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return NS_ERROR_NOT_INITIALIZED;
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if (x > 1)
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x = 1;
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if (y > 1)
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y = 1;
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if (z > 1)
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z = 1;
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if (x < -1)
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x = -1;
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if (y < -1)
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y = -1;
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if (z < -1)
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z = -1;
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if (!mNewListener) {
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if (PR_ABS(mLastX - x) < .01 &&
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PR_ABS(mLastY - y) < .01 &&
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PR_ABS(mLastZ - z) < .01)
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return NS_OK;
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}
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mLastX = x;
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mLastY = y;
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mLastZ = z;
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mNewListener = PR_FALSE;
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for (PRUint32 i = mListeners.Count(); i > 0 ; ) {
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--i;
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nsRefPtr<nsIAcceleration> a = new nsAcceleration(x, y, z);
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mListeners[i]->OnAccelerationChange(a);
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}
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for (PRUint32 i = mWindowListeners.Count(); i > 0 ; ) {
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--i;
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nsCOMPtr<nsIDOMDocument> domdoc;
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mWindowListeners[i]->GetDocument(getter_AddRefs(domdoc));
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nsCOMPtr<nsIDOMDocumentEvent> docevent(do_QueryInterface(domdoc));
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nsCOMPtr<nsIDOMEvent> event;
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PRBool defaultActionEnabled = PR_TRUE;
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if (docevent) {
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docevent->CreateEvent(NS_LITERAL_STRING("orientation"), getter_AddRefs(event));
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nsCOMPtr<nsIDOMOrientationEvent> oe = do_QueryInterface(event);
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if (event) {
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oe->InitOrientationEvent(NS_LITERAL_STRING("MozOrientation"),
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PR_TRUE,
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PR_FALSE,
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x,
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y,
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z);
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nsCOMPtr<nsIPrivateDOMEvent> privateEvent = do_QueryInterface(event);
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if (privateEvent)
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privateEvent->SetTrusted(PR_TRUE);
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nsCOMPtr<nsIDOMEventTarget> target(do_QueryInterface(mWindowListeners[i]));
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target->DispatchEvent(event, &defaultActionEnabled);
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}
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}
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}
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return NS_OK;
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}
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