1.1 --- /dev/null Thu Jan 01 00:00:00 1970 +0000
1.2 +++ b/dom/events/TouchEvent.cpp Wed Dec 31 06:09:35 2014 +0100
1.3 @@ -0,0 +1,257 @@
1.4 +/* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
1.5 +/* vim: set ts=8 sts=2 et sw=2 tw=80: */
1.6 +/* This Source Code Form is subject to the terms of the Mozilla Public
1.7 + * License, v. 2.0. If a copy of the MPL was not distributed with this
1.8 + * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
1.9 +
1.10 +#include "mozilla/dom/TouchEvent.h"
1.11 +#include "mozilla/dom/Touch.h"
1.12 +#include "mozilla/dom/TouchListBinding.h"
1.13 +#include "mozilla/Preferences.h"
1.14 +#include "mozilla/TouchEvents.h"
1.15 +#include "nsContentUtils.h"
1.16 +
1.17 +namespace mozilla {
1.18 +
1.19 +#ifdef XP_WIN
1.20 +namespace widget {
1.21 +extern int32_t IsTouchDeviceSupportPresent();
1.22 +} // namespace widget
1.23 +#endif // #ifdef XP_WIN
1.24 +
1.25 +namespace dom {
1.26 +
1.27 +/******************************************************************************
1.28 + * TouchList
1.29 + *****************************************************************************/
1.30 +
1.31 +NS_INTERFACE_MAP_BEGIN_CYCLE_COLLECTION(TouchList)
1.32 + NS_WRAPPERCACHE_INTERFACE_MAP_ENTRY
1.33 + NS_INTERFACE_MAP_ENTRY(nsISupports)
1.34 +NS_INTERFACE_MAP_END
1.35 +
1.36 +NS_IMPL_CYCLE_COLLECTION_WRAPPERCACHE_2(TouchList, mParent, mPoints)
1.37 +
1.38 +NS_IMPL_CYCLE_COLLECTING_ADDREF(TouchList)
1.39 +NS_IMPL_CYCLE_COLLECTING_RELEASE(TouchList)
1.40 +
1.41 +JSObject*
1.42 +TouchList::WrapObject(JSContext* aCx)
1.43 +{
1.44 + return TouchListBinding::Wrap(aCx, this);
1.45 +}
1.46 +
1.47 +// static
1.48 +bool
1.49 +TouchList::PrefEnabled(JSContext* aCx, JSObject* aGlobal)
1.50 +{
1.51 + return TouchEvent::PrefEnabled(aCx, aGlobal);
1.52 +}
1.53 +
1.54 +Touch*
1.55 +TouchList::IdentifiedTouch(int32_t aIdentifier) const
1.56 +{
1.57 + for (uint32_t i = 0; i < mPoints.Length(); ++i) {
1.58 + Touch* point = mPoints[i];
1.59 + if (point && point->Identifier() == aIdentifier) {
1.60 + return point;
1.61 + }
1.62 + }
1.63 + return nullptr;
1.64 +}
1.65 +
1.66 +/******************************************************************************
1.67 + * TouchEvent
1.68 + *****************************************************************************/
1.69 +
1.70 +TouchEvent::TouchEvent(EventTarget* aOwner,
1.71 + nsPresContext* aPresContext,
1.72 + WidgetTouchEvent* aEvent)
1.73 + : UIEvent(aOwner, aPresContext,
1.74 + aEvent ? aEvent : new WidgetTouchEvent(false, 0, nullptr))
1.75 +{
1.76 + if (aEvent) {
1.77 + mEventIsInternal = false;
1.78 +
1.79 + for (uint32_t i = 0; i < aEvent->touches.Length(); ++i) {
1.80 + Touch* touch = aEvent->touches[i];
1.81 + touch->InitializePoints(mPresContext, aEvent);
1.82 + }
1.83 + } else {
1.84 + mEventIsInternal = true;
1.85 + mEvent->time = PR_Now();
1.86 + }
1.87 +}
1.88 +
1.89 +NS_IMPL_CYCLE_COLLECTION_INHERITED(TouchEvent, UIEvent,
1.90 + mTouches,
1.91 + mTargetTouches,
1.92 + mChangedTouches)
1.93 +
1.94 +NS_INTERFACE_MAP_BEGIN_CYCLE_COLLECTION_INHERITED(TouchEvent)
1.95 +NS_INTERFACE_MAP_END_INHERITING(UIEvent)
1.96 +
1.97 +NS_IMPL_ADDREF_INHERITED(TouchEvent, UIEvent)
1.98 +NS_IMPL_RELEASE_INHERITED(TouchEvent, UIEvent)
1.99 +
1.100 +void
1.101 +TouchEvent::InitTouchEvent(const nsAString& aType,
1.102 + bool aCanBubble,
1.103 + bool aCancelable,
1.104 + nsIDOMWindow* aView,
1.105 + int32_t aDetail,
1.106 + bool aCtrlKey,
1.107 + bool aAltKey,
1.108 + bool aShiftKey,
1.109 + bool aMetaKey,
1.110 + TouchList* aTouches,
1.111 + TouchList* aTargetTouches,
1.112 + TouchList* aChangedTouches,
1.113 + ErrorResult& aRv)
1.114 +{
1.115 + aRv = UIEvent::InitUIEvent(aType, aCanBubble, aCancelable, aView, aDetail);
1.116 + if (aRv.Failed()) {
1.117 + return;
1.118 + }
1.119 +
1.120 + mEvent->AsInputEvent()->InitBasicModifiers(aCtrlKey, aAltKey,
1.121 + aShiftKey, aMetaKey);
1.122 + mTouches = aTouches;
1.123 + mTargetTouches = aTargetTouches;
1.124 + mChangedTouches = aChangedTouches;
1.125 +}
1.126 +
1.127 +TouchList*
1.128 +TouchEvent::Touches()
1.129 +{
1.130 + if (!mTouches) {
1.131 + WidgetTouchEvent* touchEvent = mEvent->AsTouchEvent();
1.132 + if (mEvent->message == NS_TOUCH_END || mEvent->message == NS_TOUCH_CANCEL) {
1.133 + // for touchend events, remove any changed touches from the touches array
1.134 + nsTArray< nsRefPtr<Touch> > unchangedTouches;
1.135 + const nsTArray< nsRefPtr<Touch> >& touches = touchEvent->touches;
1.136 + for (uint32_t i = 0; i < touches.Length(); ++i) {
1.137 + if (!touches[i]->mChanged) {
1.138 + unchangedTouches.AppendElement(touches[i]);
1.139 + }
1.140 + }
1.141 + mTouches = new TouchList(ToSupports(this), unchangedTouches);
1.142 + } else {
1.143 + mTouches = new TouchList(ToSupports(this), touchEvent->touches);
1.144 + }
1.145 + }
1.146 + return mTouches;
1.147 +}
1.148 +
1.149 +TouchList*
1.150 +TouchEvent::TargetTouches()
1.151 +{
1.152 + if (!mTargetTouches) {
1.153 + nsTArray< nsRefPtr<Touch> > targetTouches;
1.154 + WidgetTouchEvent* touchEvent = mEvent->AsTouchEvent();
1.155 + const nsTArray< nsRefPtr<Touch> >& touches = touchEvent->touches;
1.156 + for (uint32_t i = 0; i < touches.Length(); ++i) {
1.157 + // for touchend/cancel events, don't append to the target list if this is a
1.158 + // touch that is ending
1.159 + if ((mEvent->message != NS_TOUCH_END &&
1.160 + mEvent->message != NS_TOUCH_CANCEL) || !touches[i]->mChanged) {
1.161 + if (touches[i]->mTarget == mEvent->originalTarget) {
1.162 + targetTouches.AppendElement(touches[i]);
1.163 + }
1.164 + }
1.165 + }
1.166 + mTargetTouches = new TouchList(ToSupports(this), targetTouches);
1.167 + }
1.168 + return mTargetTouches;
1.169 +}
1.170 +
1.171 +TouchList*
1.172 +TouchEvent::ChangedTouches()
1.173 +{
1.174 + if (!mChangedTouches) {
1.175 + nsTArray< nsRefPtr<Touch> > changedTouches;
1.176 + WidgetTouchEvent* touchEvent = mEvent->AsTouchEvent();
1.177 + const nsTArray< nsRefPtr<Touch> >& touches = touchEvent->touches;
1.178 + for (uint32_t i = 0; i < touches.Length(); ++i) {
1.179 + if (touches[i]->mChanged) {
1.180 + changedTouches.AppendElement(touches[i]);
1.181 + }
1.182 + }
1.183 + mChangedTouches = new TouchList(ToSupports(this), changedTouches);
1.184 + }
1.185 + return mChangedTouches;
1.186 +}
1.187 +
1.188 +// static
1.189 +bool
1.190 +TouchEvent::PrefEnabled(JSContext* aCx, JSObject* aGlobal)
1.191 +{
1.192 + bool prefValue = false;
1.193 + int32_t flag = 0;
1.194 + if (NS_SUCCEEDED(Preferences::GetInt("dom.w3c_touch_events.enabled",
1.195 + &flag))) {
1.196 + if (flag == 2) {
1.197 +#ifdef XP_WIN
1.198 + static bool sDidCheckTouchDeviceSupport = false;
1.199 + static bool sIsTouchDeviceSupportPresent = false;
1.200 + // On Windows we auto-detect based on device support.
1.201 + if (!sDidCheckTouchDeviceSupport) {
1.202 + sDidCheckTouchDeviceSupport = true;
1.203 + sIsTouchDeviceSupportPresent = widget::IsTouchDeviceSupportPresent();
1.204 + }
1.205 + prefValue = sIsTouchDeviceSupportPresent;
1.206 +#else
1.207 + NS_WARNING("dom.w3c_touch_events.enabled=2 not implemented!");
1.208 + prefValue = false;
1.209 +#endif
1.210 + } else {
1.211 + prefValue = !!flag;
1.212 + }
1.213 + }
1.214 + if (prefValue) {
1.215 + nsContentUtils::InitializeTouchEventTable();
1.216 + }
1.217 + return prefValue;
1.218 +}
1.219 +
1.220 +bool
1.221 +TouchEvent::AltKey()
1.222 +{
1.223 + return mEvent->AsTouchEvent()->IsAlt();
1.224 +}
1.225 +
1.226 +bool
1.227 +TouchEvent::MetaKey()
1.228 +{
1.229 + return mEvent->AsTouchEvent()->IsMeta();
1.230 +}
1.231 +
1.232 +bool
1.233 +TouchEvent::CtrlKey()
1.234 +{
1.235 + return mEvent->AsTouchEvent()->IsControl();
1.236 +}
1.237 +
1.238 +bool
1.239 +TouchEvent::ShiftKey()
1.240 +{
1.241 + return mEvent->AsTouchEvent()->IsShift();
1.242 +}
1.243 +
1.244 +} // namespace dom
1.245 +} // namespace mozilla
1.246 +
1.247 +using namespace mozilla;
1.248 +using namespace mozilla::dom;
1.249 +
1.250 +nsresult
1.251 +NS_NewDOMTouchEvent(nsIDOMEvent** aInstancePtrResult,
1.252 + EventTarget* aOwner,
1.253 + nsPresContext* aPresContext,
1.254 + WidgetTouchEvent* aEvent)
1.255 +{
1.256 + TouchEvent* it = new TouchEvent(aOwner, aPresContext, aEvent);
1.257 + NS_ADDREF(it);
1.258 + *aInstancePtrResult = static_cast<Event*>(it);
1.259 + return NS_OK;
1.260 +}
