430 lines
13 KiB
C++
430 lines
13 KiB
C++
/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
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/* This Source Code Form is subject to the terms of the Mozilla Public
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* License, v. 2.0. If a copy of the MPL was not distributed with this
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* file, You can obtain one at http://mozilla.org/MPL/2.0/. */
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#include "InputData.h"
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#include "mozilla/dom/Touch.h"
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#include "nsDebug.h"
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#include "nsThreadUtils.h"
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#include "mozilla/MouseEvents.h"
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#include "mozilla/TouchEvents.h"
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#include "UnitTransforms.h"
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namespace mozilla {
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using namespace dom;
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already_AddRefed<Touch> SingleTouchData::ToNewDOMTouch() const
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{
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MOZ_ASSERT(NS_IsMainThread(),
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"Can only create dom::Touch instances on main thread");
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RefPtr<Touch> touch = new Touch(mIdentifier,
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LayoutDeviceIntPoint(mScreenPoint.x, mScreenPoint.y),
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LayoutDeviceIntPoint(mRadius.width, mRadius.height),
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mRotationAngle,
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mForce);
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return touch.forget();
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}
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MouseInput::MouseInput(const WidgetMouseEventBase& aMouseEvent)
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: InputData(MOUSE_INPUT, aMouseEvent.time, aMouseEvent.timeStamp,
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aMouseEvent.modifiers)
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{
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MOZ_ASSERT(NS_IsMainThread(),
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"Can only copy from WidgetTouchEvent on main thread");
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mButtonType = NONE;
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switch (aMouseEvent.button) {
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case WidgetMouseEventBase::eLeftButton:
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mButtonType = MouseInput::LEFT_BUTTON;
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break;
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case WidgetMouseEventBase::eMiddleButton:
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mButtonType = MouseInput::MIDDLE_BUTTON;
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break;
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case WidgetMouseEventBase::eRightButton:
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mButtonType = MouseInput::RIGHT_BUTTON;
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break;
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}
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switch (aMouseEvent.mMessage) {
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case eMouseMove:
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mType = MOUSE_MOVE;
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break;
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case eMouseUp:
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mType = MOUSE_UP;
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break;
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case eMouseDown:
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mType = MOUSE_DOWN;
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break;
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case eDragStart:
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mType = MOUSE_DRAG_START;
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break;
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case eDragEnd:
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mType = MOUSE_DRAG_END;
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break;
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default:
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MOZ_ASSERT_UNREACHABLE("Mouse event type not supported");
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break;
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}
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}
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bool
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MouseInput::TransformToLocal(const ScreenToParentLayerMatrix4x4& aTransform)
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{
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Maybe<ParentLayerPoint> point = UntransformBy(aTransform, mOrigin);
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if (!point) {
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return false;
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}
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mLocalOrigin = *point;
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return true;
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}
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MultiTouchInput::MultiTouchInput(const WidgetTouchEvent& aTouchEvent)
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: InputData(MULTITOUCH_INPUT, aTouchEvent.time, aTouchEvent.timeStamp,
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aTouchEvent.modifiers)
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, mHandledByAPZ(aTouchEvent.mFlags.mHandledByAPZ)
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{
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MOZ_ASSERT(NS_IsMainThread(),
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"Can only copy from WidgetTouchEvent on main thread");
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switch (aTouchEvent.mMessage) {
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case eTouchStart:
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mType = MULTITOUCH_START;
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break;
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case eTouchMove:
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mType = MULTITOUCH_MOVE;
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break;
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case eTouchEnd:
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mType = MULTITOUCH_END;
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break;
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case eTouchCancel:
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mType = MULTITOUCH_CANCEL;
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break;
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default:
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MOZ_ASSERT_UNREACHABLE("Did not assign a type to a MultiTouchInput");
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break;
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}
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for (size_t i = 0; i < aTouchEvent.touches.Length(); i++) {
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const Touch* domTouch = aTouchEvent.touches[i];
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// Extract data from weird interfaces.
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int32_t identifier = domTouch->Identifier();
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int32_t radiusX = domTouch->RadiusX();
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int32_t radiusY = domTouch->RadiusY();
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float rotationAngle = domTouch->RotationAngle();
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float force = domTouch->Force();
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SingleTouchData data(identifier,
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ViewAs<ScreenPixel>(domTouch->mRefPoint,
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PixelCastJustification::LayoutDeviceIsScreenForUntransformedEvent),
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ScreenSize(radiusX, radiusY),
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rotationAngle,
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force);
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mTouches.AppendElement(data);
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}
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}
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WidgetTouchEvent
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MultiTouchInput::ToWidgetTouchEvent(nsIWidget* aWidget) const
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{
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MOZ_ASSERT(NS_IsMainThread(),
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"Can only convert To WidgetTouchEvent on main thread");
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EventMessage touchEventMessage = eVoidEvent;
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switch (mType) {
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case MULTITOUCH_START:
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touchEventMessage = eTouchStart;
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break;
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case MULTITOUCH_MOVE:
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touchEventMessage = eTouchMove;
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break;
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case MULTITOUCH_END:
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touchEventMessage = eTouchEnd;
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break;
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case MULTITOUCH_CANCEL:
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touchEventMessage = eTouchCancel;
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break;
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default:
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MOZ_ASSERT_UNREACHABLE("Did not assign a type to WidgetTouchEvent in MultiTouchInput");
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break;
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}
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WidgetTouchEvent event(true, touchEventMessage, aWidget);
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if (touchEventMessage == eVoidEvent) {
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return event;
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}
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event.modifiers = this->modifiers;
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event.time = this->mTime;
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event.timeStamp = this->mTimeStamp;
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event.mFlags.mHandledByAPZ = mHandledByAPZ;
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for (size_t i = 0; i < mTouches.Length(); i++) {
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*event.touches.AppendElement() = mTouches[i].ToNewDOMTouch();
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}
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return event;
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}
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WidgetMouseEvent
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MultiTouchInput::ToWidgetMouseEvent(nsIWidget* aWidget) const
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{
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MOZ_ASSERT(NS_IsMainThread(),
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"Can only convert To WidgetMouseEvent on main thread");
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EventMessage mouseEventMessage = eVoidEvent;
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switch (mType) {
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case MultiTouchInput::MULTITOUCH_START:
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mouseEventMessage = eMouseDown;
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break;
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case MultiTouchInput::MULTITOUCH_MOVE:
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mouseEventMessage = eMouseMove;
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break;
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case MultiTouchInput::MULTITOUCH_CANCEL:
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case MultiTouchInput::MULTITOUCH_END:
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mouseEventMessage = eMouseUp;
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break;
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default:
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MOZ_ASSERT_UNREACHABLE("Did not assign a type to WidgetMouseEvent");
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break;
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}
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WidgetMouseEvent event(true, mouseEventMessage, aWidget,
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WidgetMouseEvent::eReal, WidgetMouseEvent::eNormal);
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const SingleTouchData& firstTouch = mTouches[0];
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event.refPoint.x = firstTouch.mScreenPoint.x;
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event.refPoint.y = firstTouch.mScreenPoint.y;
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event.time = mTime;
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event.button = WidgetMouseEvent::eLeftButton;
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event.inputSource = nsIDOMMouseEvent::MOZ_SOURCE_TOUCH;
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event.modifiers = modifiers;
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event.mFlags.mHandledByAPZ = mHandledByAPZ;
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if (mouseEventMessage != eMouseMove) {
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event.clickCount = 1;
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}
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return event;
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}
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int32_t
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MultiTouchInput::IndexOfTouch(int32_t aTouchIdentifier)
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{
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for (size_t i = 0; i < mTouches.Length(); i++) {
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if (mTouches[i].mIdentifier == aTouchIdentifier) {
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return (int32_t)i;
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}
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}
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return -1;
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}
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// This conversion from WidgetMouseEvent to MultiTouchInput is needed because on
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// the B2G emulator we can only receive mouse events, but we need to be able
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// to pan correctly. To do this, we convert the events into a format that the
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// panning code can handle. This code is very limited and only supports
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// SingleTouchData. It also sends garbage for the identifier, radius, force
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// and rotation angle.
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MultiTouchInput::MultiTouchInput(const WidgetMouseEvent& aMouseEvent)
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: InputData(MULTITOUCH_INPUT, aMouseEvent.time, aMouseEvent.timeStamp,
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aMouseEvent.modifiers)
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, mHandledByAPZ(aMouseEvent.mFlags.mHandledByAPZ)
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{
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MOZ_ASSERT(NS_IsMainThread(),
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"Can only copy from WidgetMouseEvent on main thread");
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switch (aMouseEvent.mMessage) {
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case eMouseDown:
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mType = MULTITOUCH_START;
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break;
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case eMouseMove:
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mType = MULTITOUCH_MOVE;
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break;
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case eMouseUp:
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mType = MULTITOUCH_END;
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break;
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// The mouse pointer has been interrupted in an implementation-specific
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// manner, such as a synchronous event or action cancelling the touch, or a
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// touch point leaving the document window and going into a non-document
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// area capable of handling user interactions.
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case eMouseExitFromWidget:
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mType = MULTITOUCH_CANCEL;
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break;
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default:
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NS_WARNING("Did not assign a type to a MultiTouchInput");
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break;
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}
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mTouches.AppendElement(SingleTouchData(0,
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ViewAs<ScreenPixel>(aMouseEvent.refPoint,
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PixelCastJustification::LayoutDeviceIsScreenForUntransformedEvent),
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ScreenSize(1, 1),
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180.0f,
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1.0f));
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}
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bool
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MultiTouchInput::TransformToLocal(const ScreenToParentLayerMatrix4x4& aTransform)
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{
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for (size_t i = 0; i < mTouches.Length(); i++) {
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Maybe<ParentLayerIntPoint> point = UntransformBy(aTransform, mTouches[i].mScreenPoint);
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if (!point) {
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return false;
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}
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mTouches[i].mLocalScreenPoint = *point;
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}
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return true;
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}
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bool
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PanGestureInput::IsMomentum() const
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{
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switch (mType) {
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case PanGestureInput::PANGESTURE_MOMENTUMSTART:
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case PanGestureInput::PANGESTURE_MOMENTUMPAN:
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case PanGestureInput::PANGESTURE_MOMENTUMEND:
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return true;
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default:
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return false;
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}
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}
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WidgetWheelEvent
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PanGestureInput::ToWidgetWheelEvent(nsIWidget* aWidget) const
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{
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WidgetWheelEvent wheelEvent(true, eWheel, aWidget);
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wheelEvent.modifiers = this->modifiers;
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wheelEvent.time = mTime;
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wheelEvent.timeStamp = mTimeStamp;
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wheelEvent.refPoint =
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RoundedToInt(ViewAs<LayoutDevicePixel>(mPanStartPoint,
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PixelCastJustification::LayoutDeviceIsScreenForUntransformedEvent));
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wheelEvent.buttons = 0;
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wheelEvent.deltaMode = nsIDOMWheelEvent::DOM_DELTA_PIXEL;
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wheelEvent.isMomentum = IsMomentum();
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wheelEvent.lineOrPageDeltaX = mLineOrPageDeltaX;
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wheelEvent.lineOrPageDeltaY = mLineOrPageDeltaY;
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wheelEvent.deltaX = mPanDisplacement.x;
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wheelEvent.deltaY = mPanDisplacement.y;
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wheelEvent.mFlags.mHandledByAPZ = mHandledByAPZ;
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return wheelEvent;
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}
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bool
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PanGestureInput::TransformToLocal(const ScreenToParentLayerMatrix4x4& aTransform)
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{
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Maybe<ParentLayerPoint> panStartPoint = UntransformBy(aTransform, mPanStartPoint);
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if (!panStartPoint) {
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return false;
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}
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mLocalPanStartPoint = *panStartPoint;
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Maybe<ParentLayerPoint> panDisplacement = UntransformVector(aTransform, mPanDisplacement, mPanStartPoint);
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if (!panDisplacement) {
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return false;
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}
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mLocalPanDisplacement = *panDisplacement;
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return true;
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}
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bool
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PinchGestureInput::TransformToLocal(const ScreenToParentLayerMatrix4x4& aTransform)
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{
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Maybe<ParentLayerPoint> point = UntransformBy(aTransform, mFocusPoint);
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if (!point) {
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return false;
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}
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mLocalFocusPoint = *point;
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return true;
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}
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bool
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TapGestureInput::TransformToLocal(const ScreenToParentLayerMatrix4x4& aTransform)
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{
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Maybe<ParentLayerIntPoint> point = UntransformBy(aTransform, mPoint);
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if (!point) {
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return false;
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}
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mLocalPoint = *point;
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return true;
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}
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static uint32_t
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DeltaModeForDeltaType(ScrollWheelInput::ScrollDeltaType aDeltaType)
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{
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switch (aDeltaType) {
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case ScrollWheelInput::SCROLLDELTA_LINE:
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return nsIDOMWheelEvent::DOM_DELTA_LINE;
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case ScrollWheelInput::SCROLLDELTA_PAGE:
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return nsIDOMWheelEvent::DOM_DELTA_PAGE;
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case ScrollWheelInput::SCROLLDELTA_PIXEL:
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default:
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return nsIDOMWheelEvent::DOM_DELTA_PIXEL;
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}
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}
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ScrollWheelInput::ScrollWheelInput(const WidgetWheelEvent& aWheelEvent) :
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InputData(SCROLLWHEEL_INPUT, aWheelEvent.time, aWheelEvent.timeStamp, aWheelEvent.modifiers),
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mDeltaType(DeltaTypeForDeltaMode(aWheelEvent.deltaMode)),
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mScrollMode(SCROLLMODE_INSTANT),
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mHandledByAPZ(aWheelEvent.mFlags.mHandledByAPZ),
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mDeltaX(aWheelEvent.deltaX),
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mDeltaY(aWheelEvent.deltaY),
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mLineOrPageDeltaX(aWheelEvent.lineOrPageDeltaX),
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mLineOrPageDeltaY(aWheelEvent.lineOrPageDeltaY),
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mUserDeltaMultiplierX(1.0),
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mUserDeltaMultiplierY(1.0),
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mIsMomentum(aWheelEvent.isMomentum)
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{
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mOrigin =
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ScreenPoint(ViewAs<ScreenPixel>(aWheelEvent.refPoint,
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PixelCastJustification::LayoutDeviceIsScreenForUntransformedEvent));
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}
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WidgetWheelEvent
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ScrollWheelInput::ToWidgetWheelEvent(nsIWidget* aWidget) const
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{
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WidgetWheelEvent wheelEvent(true, eWheel, aWidget);
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wheelEvent.modifiers = this->modifiers;
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wheelEvent.time = mTime;
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wheelEvent.timeStamp = mTimeStamp;
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wheelEvent.refPoint =
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RoundedToInt(ViewAs<LayoutDevicePixel>(mOrigin,
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PixelCastJustification::LayoutDeviceIsScreenForUntransformedEvent));
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wheelEvent.buttons = 0;
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wheelEvent.deltaMode = DeltaModeForDeltaType(mDeltaType);
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wheelEvent.isMomentum = mIsMomentum;
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wheelEvent.deltaX = mDeltaX;
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wheelEvent.deltaY = mDeltaY;
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wheelEvent.lineOrPageDeltaX = mLineOrPageDeltaX;
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wheelEvent.lineOrPageDeltaY = mLineOrPageDeltaY;
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wheelEvent.mFlags.mHandledByAPZ = mHandledByAPZ;
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return wheelEvent;
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}
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bool
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ScrollWheelInput::TransformToLocal(const ScreenToParentLayerMatrix4x4& aTransform)
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{
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Maybe<ParentLayerPoint> point = UntransformBy(aTransform, mOrigin);
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if (!point) {
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return false;
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}
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mLocalOrigin = *point;
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return true;
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}
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bool
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ScrollWheelInput::IsCustomizedByUserPrefs() const
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{
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return mUserDeltaMultiplierX != 1.0 ||
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mUserDeltaMultiplierY != 1.0;
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}
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} // namespace mozilla
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