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flutter_flutter/engine/web/WebInputEventConversion.cpp
Eric Seidel 66bad10810 Remove a bunch of OS(MACOSX) code 
This code is unused in sky.

Amazing how much code we had for dealing with old
versions of MSVC.

R=ojan@chromium.org, abarth@chromium.org

Review URL: https://codereview.chromium.org/709603006
2014-11-11 15:33:38 -08:00

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/*
* Copyright (C) 2009 Google Inc. All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions are
* met:
*
* * Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* * Redistributions in binary form must reproduce the above
* copyright notice, this list of conditions and the following disclaimer
* in the documentation and/or other materials provided with the
* distribution.
* * Neither the name of Google Inc. nor the names of its
* contributors may be used to endorse or promote products derived from
* this software without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
* A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
* OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
* SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
* LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/
#include "config.h"
#include "web/WebInputEventConversion.h"
#include "core/dom/Touch.h"
#include "core/dom/TouchList.h"
#include "core/events/GestureEvent.h"
#include "core/events/KeyboardEvent.h"
#include "core/events/MouseEvent.h"
#include "core/events/TouchEvent.h"
#include "core/events/WheelEvent.h"
#include "core/frame/FrameHost.h"
#include "core/frame/FrameView.h"
#include "core/page/Page.h"
#include "core/rendering/RenderObject.h"
#include "platform/KeyboardCodes.h"
#include "platform/Widget.h"
namespace blink {
static const double millisPerSecond = 1000.0;
static float widgetInputEventsScaleFactor(const Widget* widget)
{
if (!widget)
return 1;
FrameView* rootView = toFrameView(widget->root());
if (!rootView)
return 1;
return rootView->inputEventsScaleFactor();
}
static IntSize widgetInputEventsOffset(const Widget* widget)
{
if (!widget)
return IntSize();
FrameView* rootView = toFrameView(widget->root());
if (!rootView)
return IntSize();
return rootView->inputEventsOffsetForEmulation();
}
// MakePlatformMouseEvent -----------------------------------------------------
PlatformMouseEventBuilder::PlatformMouseEventBuilder(Widget* widget, const WebMouseEvent& e)
{
float scale = widgetInputEventsScaleFactor(widget);
IntSize offset = widgetInputEventsOffset(widget);
// FIXME: Widget is always toplevel, unless it's a popup. We may be able
// to get rid of this once we abstract popups into a WebKit API.
m_position = widget->convertFromContainingView(
IntPoint((e.x - offset.width()) / scale, (e.y - offset.height()) / scale));
m_globalPosition = IntPoint(e.globalX, e.globalY);
m_movementDelta = IntPoint(e.movementX / scale, e.movementY / scale);
m_button = static_cast<MouseButton>(e.button);
m_modifiers = 0;
if (e.modifiers & WebInputEvent::ShiftKey)
m_modifiers |= PlatformEvent::ShiftKey;
if (e.modifiers & WebInputEvent::ControlKey)
m_modifiers |= PlatformEvent::CtrlKey;
if (e.modifiers & WebInputEvent::AltKey)
m_modifiers |= PlatformEvent::AltKey;
if (e.modifiers & WebInputEvent::MetaKey)
m_modifiers |= PlatformEvent::MetaKey;
m_modifierFlags = e.modifiers;
m_timestamp = e.timeStampSeconds;
m_clickCount = e.clickCount;
switch (e.type) {
case WebInputEvent::MouseMove:
case WebInputEvent::MouseLeave: // synthesize a move event
m_type = PlatformEvent::MouseMoved;
break;
case WebInputEvent::MouseDown:
m_type = PlatformEvent::MousePressed;
break;
case WebInputEvent::MouseUp:
m_type = PlatformEvent::MouseReleased;
break;
default:
ASSERT_NOT_REACHED();
}
}
// PlatformWheelEventBuilder --------------------------------------------------
PlatformWheelEventBuilder::PlatformWheelEventBuilder(Widget* widget, const WebMouseWheelEvent& e)
{
float scale = widgetInputEventsScaleFactor(widget);
IntSize offset = widgetInputEventsOffset(widget);
m_position = widget->convertFromContainingView(
IntPoint((e.x - offset.width()) / scale, (e.y - offset.height()) / scale));
m_globalPosition = IntPoint(e.globalX, e.globalY);
m_deltaX = e.deltaX;
m_deltaY = e.deltaY;
m_wheelTicksX = e.wheelTicksX;
m_wheelTicksY = e.wheelTicksY;
m_granularity = e.scrollByPage ?
ScrollByPageWheelEvent : ScrollByPixelWheelEvent;
m_type = PlatformEvent::Wheel;
m_modifiers = 0;
if (e.modifiers & WebInputEvent::ShiftKey)
m_modifiers |= PlatformEvent::ShiftKey;
if (e.modifiers & WebInputEvent::ControlKey)
m_modifiers |= PlatformEvent::CtrlKey;
if (e.modifiers & WebInputEvent::AltKey)
m_modifiers |= PlatformEvent::AltKey;
if (e.modifiers & WebInputEvent::MetaKey)
m_modifiers |= PlatformEvent::MetaKey;
m_hasPreciseScrollingDeltas = e.hasPreciseScrollingDeltas;
}
// PlatformGestureEventBuilder --------------------------------------------------
PlatformGestureEventBuilder::PlatformGestureEventBuilder(Widget* widget, const WebGestureEvent& e)
{
float scale = widgetInputEventsScaleFactor(widget);
IntSize offset = widgetInputEventsOffset(widget);
switch (e.type) {
case WebInputEvent::GestureScrollBegin:
m_type = PlatformEvent::GestureScrollBegin;
break;
case WebInputEvent::GestureScrollEnd:
m_type = PlatformEvent::GestureScrollEnd;
break;
case WebInputEvent::GestureFlingStart:
m_type = PlatformEvent::GestureFlingStart;
break;
case WebInputEvent::GestureScrollUpdate:
m_type = PlatformEvent::GestureScrollUpdate;
m_data.m_scrollUpdate.m_deltaX = e.data.scrollUpdate.deltaX / scale;
m_data.m_scrollUpdate.m_deltaY = e.data.scrollUpdate.deltaY / scale;
m_data.m_scrollUpdate.m_velocityX = e.data.scrollUpdate.velocityX;
m_data.m_scrollUpdate.m_velocityY = e.data.scrollUpdate.velocityY;
break;
case WebInputEvent::GestureScrollUpdateWithoutPropagation:
m_type = PlatformEvent::GestureScrollUpdateWithoutPropagation;
m_data.m_scrollUpdate.m_deltaX = e.data.scrollUpdate.deltaX / scale;
m_data.m_scrollUpdate.m_deltaY = e.data.scrollUpdate.deltaY / scale;
m_data.m_scrollUpdate.m_velocityX = e.data.scrollUpdate.velocityX;
m_data.m_scrollUpdate.m_velocityY = e.data.scrollUpdate.velocityY;
break;
case WebInputEvent::GestureTap:
m_type = PlatformEvent::GestureTap;
m_area = expandedIntSize(FloatSize(e.data.tap.width / scale, e.data.tap.height / scale));
m_data.m_tap.m_tapCount = e.data.tap.tapCount;
break;
case WebInputEvent::GestureTapUnconfirmed:
m_type = PlatformEvent::GestureTapUnconfirmed;
m_area = expandedIntSize(FloatSize(e.data.tap.width / scale, e.data.tap.height / scale));
break;
case WebInputEvent::GestureTapDown:
m_type = PlatformEvent::GestureTapDown;
m_area = expandedIntSize(FloatSize(e.data.tapDown.width / scale, e.data.tapDown.height / scale));
break;
case WebInputEvent::GestureShowPress:
m_type = PlatformEvent::GestureShowPress;
m_area = expandedIntSize(FloatSize(e.data.showPress.width / scale, e.data.showPress.height / scale));
break;
case WebInputEvent::GestureTapCancel:
m_type = PlatformEvent::GestureTapDownCancel;
break;
case WebInputEvent::GestureDoubleTap:
// DoubleTap gesture is now handled as PlatformEvent::GestureTap with tap_count = 2. So no
// need to convert to a Platfrom DoubleTap gesture. But in WebViewImpl::handleGestureEvent
// all WebGestureEvent are converted to PlatformGestureEvent, for completeness and not reach
// the ASSERT_NOT_REACHED() at the end, convert the DoubleTap to a NoType.
m_type = PlatformEvent::NoType;
break;
case WebInputEvent::GestureTwoFingerTap:
m_type = PlatformEvent::GestureTwoFingerTap;
m_area = expandedIntSize(FloatSize(e.data.twoFingerTap.firstFingerWidth / scale, e.data.twoFingerTap.firstFingerHeight / scale));
break;
case WebInputEvent::GestureLongPress:
m_type = PlatformEvent::GestureLongPress;
m_area = expandedIntSize(FloatSize(e.data.longPress.width / scale, e.data.longPress.height / scale));
break;
case WebInputEvent::GestureLongTap:
m_type = PlatformEvent::GestureLongTap;
m_area = expandedIntSize(FloatSize(e.data.longPress.width / scale, e.data.longPress.height / scale));
break;
case WebInputEvent::GesturePinchBegin:
m_type = PlatformEvent::GesturePinchBegin;
break;
case WebInputEvent::GesturePinchEnd:
m_type = PlatformEvent::GesturePinchEnd;
break;
case WebInputEvent::GesturePinchUpdate:
m_type = PlatformEvent::GesturePinchUpdate;
m_data.m_pinchUpdate.m_scale = e.data.pinchUpdate.scale;
break;
default:
ASSERT_NOT_REACHED();
}
m_position = widget->convertFromContainingView(
IntPoint((e.x - offset.width()) / scale, (e.y - offset.height()) / scale));
m_globalPosition = IntPoint(e.globalX, e.globalY);
m_timestamp = e.timeStampSeconds;
m_modifiers = 0;
if (e.modifiers & WebInputEvent::ShiftKey)
m_modifiers |= PlatformEvent::ShiftKey;
if (e.modifiers & WebInputEvent::ControlKey)
m_modifiers |= PlatformEvent::CtrlKey;
if (e.modifiers & WebInputEvent::AltKey)
m_modifiers |= PlatformEvent::AltKey;
if (e.modifiers & WebInputEvent::MetaKey)
m_modifiers |= PlatformEvent::MetaKey;
}
// MakePlatformKeyboardEvent --------------------------------------------------
inline PlatformEvent::Type toPlatformKeyboardEventType(WebInputEvent::Type type)
{
switch (type) {
case WebInputEvent::KeyUp:
return PlatformEvent::KeyUp;
case WebInputEvent::KeyDown:
return PlatformEvent::KeyDown;
case WebInputEvent::RawKeyDown:
return PlatformEvent::RawKeyDown;
case WebInputEvent::Char:
return PlatformEvent::Char;
default:
ASSERT_NOT_REACHED();
}
return PlatformEvent::KeyDown;
}
PlatformKeyboardEventBuilder::PlatformKeyboardEventBuilder(const WebKeyboardEvent& e)
{
m_type = toPlatformKeyboardEventType(e.type);
m_text = String(e.text);
m_unmodifiedText = String(e.unmodifiedText);
m_keyIdentifier = String(e.keyIdentifier);
m_autoRepeat = (e.modifiers & WebInputEvent::IsAutoRepeat);
m_nativeVirtualKeyCode = e.nativeKeyCode;
m_isKeypad = (e.modifiers & WebInputEvent::IsKeyPad);
m_isSystemKey = e.isSystemKey;
m_modifiers = 0;
if (e.modifiers & WebInputEvent::ShiftKey)
m_modifiers |= PlatformEvent::ShiftKey;
if (e.modifiers & WebInputEvent::ControlKey)
m_modifiers |= PlatformEvent::CtrlKey;
if (e.modifiers & WebInputEvent::AltKey)
m_modifiers |= PlatformEvent::AltKey;
if (e.modifiers & WebInputEvent::MetaKey)
m_modifiers |= PlatformEvent::MetaKey;
// FIXME: PlatformKeyboardEvents expect a locational version of the keycode (e.g. VK_LSHIFT
// instead of VK_SHIFT). This should be changed so the location/keycode are stored separately,
// as in other places in the code.
m_windowsVirtualKeyCode = e.windowsKeyCode;
if (e.windowsKeyCode == VK_SHIFT) {
if (e.modifiers & WebInputEvent::IsLeft)
m_windowsVirtualKeyCode = VK_LSHIFT;
else if (e.modifiers & WebInputEvent::IsRight)
m_windowsVirtualKeyCode = VK_RSHIFT;
} else if (e.windowsKeyCode == VK_CONTROL) {
if (e.modifiers & WebInputEvent::IsLeft)
m_windowsVirtualKeyCode = VK_LCONTROL;
else if (e.modifiers & WebInputEvent::IsRight)
m_windowsVirtualKeyCode = VK_RCONTROL;
} else if (e.windowsKeyCode == VK_MENU) {
if (e.modifiers & WebInputEvent::IsLeft)
m_windowsVirtualKeyCode = VK_LMENU;
else if (e.modifiers & WebInputEvent::IsRight)
m_windowsVirtualKeyCode = VK_RMENU;
}
}
void PlatformKeyboardEventBuilder::setKeyType(Type type)
{
// According to the behavior of Webkit in Windows platform,
// we need to convert KeyDown to RawKeydown and Char events
// See WebKit/WebKit/Win/WebView.cpp
ASSERT(m_type == KeyDown);
ASSERT(type == RawKeyDown || type == Char);
m_type = type;
if (type == RawKeyDown) {
m_text = String();
m_unmodifiedText = String();
} else {
m_keyIdentifier = String();
m_windowsVirtualKeyCode = 0;
}
}
// Please refer to bug http://b/issue?id=961192, which talks about Webkit
// keyboard event handling changes. It also mentions the list of keys
// which don't have associated character events.
bool PlatformKeyboardEventBuilder::isCharacterKey() const
{
switch (windowsVirtualKeyCode()) {
case VKEY_BACK:
case VKEY_ESCAPE:
return false;
}
return true;
}
inline PlatformEvent::Type toPlatformTouchEventType(const WebInputEvent::Type type)
{
switch (type) {
case WebInputEvent::TouchStart:
return PlatformEvent::TouchStart;
case WebInputEvent::TouchMove:
return PlatformEvent::TouchMove;
case WebInputEvent::TouchEnd:
return PlatformEvent::TouchEnd;
case WebInputEvent::TouchCancel:
return PlatformEvent::TouchCancel;
default:
ASSERT_NOT_REACHED();
}
return PlatformEvent::TouchStart;
}
inline PlatformTouchPoint::State toPlatformTouchPointState(const WebTouchPoint::State state)
{
switch (state) {
case WebTouchPoint::StateReleased:
return PlatformTouchPoint::TouchReleased;
case WebTouchPoint::StatePressed:
return PlatformTouchPoint::TouchPressed;
case WebTouchPoint::StateMoved:
return PlatformTouchPoint::TouchMoved;
case WebTouchPoint::StateStationary:
return PlatformTouchPoint::TouchStationary;
case WebTouchPoint::StateCancelled:
return PlatformTouchPoint::TouchCancelled;
case WebTouchPoint::StateUndefined:
ASSERT_NOT_REACHED();
}
return PlatformTouchPoint::TouchReleased;
}
inline WebTouchPoint::State toWebTouchPointState(const AtomicString& type)
{
if (type == EventTypeNames::touchend)
return WebTouchPoint::StateReleased;
if (type == EventTypeNames::touchcancel)
return WebTouchPoint::StateCancelled;
if (type == EventTypeNames::touchstart)
return WebTouchPoint::StatePressed;
if (type == EventTypeNames::touchmove)
return WebTouchPoint::StateMoved;
return WebTouchPoint::StateUndefined;
}
PlatformTouchPointBuilder::PlatformTouchPointBuilder(Widget* widget, const WebTouchPoint& point)
{
float scale = 1.0f / widgetInputEventsScaleFactor(widget);
IntSize offset = widgetInputEventsOffset(widget);
m_id = point.id;
m_state = toPlatformTouchPointState(point.state);
FloatPoint pos = (point.position - offset).scaledBy(scale);
IntPoint flooredPoint = flooredIntPoint(pos);
// This assumes convertFromContainingView does only translations, not scales.
m_pos = widget->convertFromContainingView(flooredPoint) + (pos - flooredPoint);
m_screenPos = FloatPoint(point.screenPosition.x, point.screenPosition.y);
m_radius = FloatSize(point.radiusX, point.radiusY).scaledBy(scale);
m_rotationAngle = point.rotationAngle;
m_force = point.force;
}
PlatformTouchEventBuilder::PlatformTouchEventBuilder(Widget* widget, const WebTouchEvent& event)
{
m_type = toPlatformTouchEventType(event.type);
m_modifiers = 0;
if (event.modifiers & WebInputEvent::ShiftKey)
m_modifiers |= PlatformEvent::ShiftKey;
if (event.modifiers & WebInputEvent::ControlKey)
m_modifiers |= PlatformEvent::CtrlKey;
if (event.modifiers & WebInputEvent::AltKey)
m_modifiers |= PlatformEvent::AltKey;
if (event.modifiers & WebInputEvent::MetaKey)
m_modifiers |= PlatformEvent::MetaKey;
m_timestamp = event.timeStampSeconds;
for (unsigned i = 0; i < event.touchesLength; ++i)
m_touchPoints.append(PlatformTouchPointBuilder(widget, event.touches[i]));
m_cancelable = event.cancelable;
}
static int getWebInputModifiers(const UIEventWithKeyState& event)
{
int modifiers = 0;
if (event.ctrlKey())
modifiers |= WebInputEvent::ControlKey;
if (event.shiftKey())
modifiers |= WebInputEvent::ShiftKey;
if (event.altKey())
modifiers |= WebInputEvent::AltKey;
if (event.metaKey())
modifiers |= WebInputEvent::MetaKey;
return modifiers;
}
static FloatPoint convertAbsoluteLocationForRenderObjectFloat(const LayoutPoint& location, const RenderObject& renderObject)
{
return renderObject.absoluteToLocal(location, UseTransforms);
}
static IntPoint convertAbsoluteLocationForRenderObject(const LayoutPoint& location, const RenderObject& renderObject)
{
return roundedIntPoint(convertAbsoluteLocationForRenderObjectFloat(location, renderObject));
}
static void updateWebMouseEventFromCoreMouseEvent(const MouseRelatedEvent& event, const Widget& widget, const RenderObject& renderObject, WebMouseEvent& webEvent)
{
webEvent.timeStampSeconds = event.timeStamp() / millisPerSecond;
webEvent.modifiers = getWebInputModifiers(event);
IntPoint windowPoint = IntPoint(event.absoluteLocation().x(), event.absoluteLocation().y());
windowPoint = widget.convertToContainingView(windowPoint);
webEvent.globalX = event.screenX();
webEvent.globalY = event.screenY();
webEvent.windowX = windowPoint.x();
webEvent.windowY = windowPoint.y();
IntPoint localPoint = convertAbsoluteLocationForRenderObject(event.absoluteLocation(), renderObject);
webEvent.x = localPoint.x();
webEvent.y = localPoint.y();
}
WebMouseEventBuilder::WebMouseEventBuilder(const Widget* widget, const RenderObject* renderObject, const MouseEvent& event)
{
if (event.type() == EventTypeNames::mousemove)
type = WebInputEvent::MouseMove;
else if (event.type() == EventTypeNames::mouseout)
type = WebInputEvent::MouseLeave;
else if (event.type() == EventTypeNames::mouseover)
type = WebInputEvent::MouseEnter;
else if (event.type() == EventTypeNames::mousedown)
type = WebInputEvent::MouseDown;
else if (event.type() == EventTypeNames::mouseup)
type = WebInputEvent::MouseUp;
else
return; // Skip all other mouse events.
updateWebMouseEventFromCoreMouseEvent(event, *widget, *renderObject, *this);
switch (event.button()) {
case LeftButton:
button = WebMouseEvent::ButtonLeft;
break;
case MiddleButton:
button = WebMouseEvent::ButtonMiddle;
break;
case RightButton:
button = WebMouseEvent::ButtonRight;
break;
}
if (event.buttonDown()) {
switch (event.button()) {
case LeftButton:
modifiers |= WebInputEvent::LeftButtonDown;
break;
case MiddleButton:
modifiers |= WebInputEvent::MiddleButtonDown;
break;
case RightButton:
modifiers |= WebInputEvent::RightButtonDown;
break;
}
} else
button = WebMouseEvent::ButtonNone;
movementX = event.movementX();
movementY = event.movementY();
clickCount = event.detail();
}
// Generate a synthetic WebMouseEvent given a TouchEvent (eg. for emulating a mouse
// with touch input for plugins that don't support touch input).
WebMouseEventBuilder::WebMouseEventBuilder(const Widget* widget, const RenderObject* renderObject, const TouchEvent& event)
{
if (!event.touches())
return;
if (event.touches()->length() != 1) {
if (event.touches()->length() || event.type() != EventTypeNames::touchend || !event.changedTouches() || event.changedTouches()->length() != 1)
return;
}
const Touch* touch = event.touches()->length() == 1 ? event.touches()->item(0) : event.changedTouches()->item(0);
if (touch->identifier())
return;
if (event.type() == EventTypeNames::touchstart)
type = MouseDown;
else if (event.type() == EventTypeNames::touchmove)
type = MouseMove;
else if (event.type() == EventTypeNames::touchend)
type = MouseUp;
else
return;
timeStampSeconds = event.timeStamp() / millisPerSecond;
modifiers = getWebInputModifiers(event);
// The mouse event co-ordinates should be generated from the co-ordinates of the touch point.
IntPoint windowPoint = roundedIntPoint(touch->absoluteLocation());
windowPoint = widget->convertToContainingView(windowPoint);
IntPoint screenPoint = roundedIntPoint(touch->screenLocation());
globalX = screenPoint.x();
globalY = screenPoint.y();
windowX = windowPoint.x();
windowY = windowPoint.y();
button = WebMouseEvent::ButtonLeft;
modifiers |= WebInputEvent::LeftButtonDown;
clickCount = (type == MouseDown || type == MouseUp);
IntPoint localPoint = convertAbsoluteLocationForRenderObject(touch->absoluteLocation(), *renderObject);
x = localPoint.x();
y = localPoint.y();
}
WebMouseEventBuilder::WebMouseEventBuilder(const Widget* widget, const PlatformMouseEvent& event)
{
switch (event.type()) {
case PlatformEvent::MouseMoved:
type = MouseMove;
break;
case PlatformEvent::MousePressed:
type = MouseDown;
break;
case PlatformEvent::MouseReleased:
type = MouseUp;
break;
default:
ASSERT_NOT_REACHED();
type = Undefined;
return;
}
modifiers = 0;
if (event.modifiers() & PlatformEvent::ShiftKey)
modifiers |= ShiftKey;
if (event.modifiers() & PlatformEvent::CtrlKey)
modifiers |= ControlKey;
if (event.modifiers() & PlatformEvent::AltKey)
modifiers |= AltKey;
if (event.modifiers() & PlatformEvent::MetaKey)
modifiers |= MetaKey;
timeStampSeconds = event.timestamp();
IntPoint position = event.position();
float scale = widgetInputEventsScaleFactor(widget);
position.scale(scale, scale);
x = position.x();
y = position.y();
globalX = event.globalPosition().x();
globalY = event.globalPosition().y();
movementX = event.movementDelta().x() * scale;
movementY = event.movementDelta().y() * scale;
button = static_cast<Button>(event.button());
clickCount = event.clickCount();
}
WebMouseWheelEventBuilder::WebMouseWheelEventBuilder(const Widget* widget, const RenderObject* renderObject, const WheelEvent& event)
{
if (event.type() != EventTypeNames::wheel && event.type() != EventTypeNames::mousewheel)
return;
type = WebInputEvent::MouseWheel;
updateWebMouseEventFromCoreMouseEvent(event, *widget, *renderObject, *this);
deltaX = -event.deltaX();
deltaY = -event.deltaY();
wheelTicksX = event.ticksX();
wheelTicksY = event.ticksY();
scrollByPage = event.deltaMode() == WheelEvent::DOM_DELTA_PAGE;
}
WebKeyboardEventBuilder::WebKeyboardEventBuilder(const KeyboardEvent& event)
{
if (event.type() == EventTypeNames::keydown)
type = KeyDown;
else if (event.type() == EventTypeNames::keyup)
type = WebInputEvent::KeyUp;
else if (event.type() == EventTypeNames::keypress)
type = WebInputEvent::Char;
else
return; // Skip all other keyboard events.
modifiers = getWebInputModifiers(event);
if (event.location() == KeyboardEvent::DOM_KEY_LOCATION_NUMPAD)
modifiers |= WebInputEvent::IsKeyPad;
else if (event.location() == KeyboardEvent::DOM_KEY_LOCATION_LEFT)
modifiers |= WebInputEvent::IsLeft;
else if (event.location() == KeyboardEvent::DOM_KEY_LOCATION_RIGHT)
modifiers |= WebInputEvent::IsRight;
timeStampSeconds = event.timeStamp() / millisPerSecond;
windowsKeyCode = event.keyCode();
// The platform keyevent does not exist if the event was created using
// initKeyboardEvent.
if (!event.keyEvent())
return;
nativeKeyCode = event.keyEvent()->nativeVirtualKeyCode();
unsigned numberOfCharacters = std::min(event.keyEvent()->text().length(), static_cast<unsigned>(textLengthCap));
for (unsigned i = 0; i < numberOfCharacters; ++i) {
text[i] = event.keyEvent()->text()[i];
unmodifiedText[i] = event.keyEvent()->unmodifiedText()[i];
}
memcpy(keyIdentifier, event.keyIdentifier().ascii().data(), event.keyIdentifier().length());
}
WebInputEvent::Type toWebKeyboardEventType(PlatformEvent::Type type)
{
switch (type) {
case PlatformEvent::KeyUp:
return WebInputEvent::KeyUp;
case PlatformEvent::KeyDown:
return WebInputEvent::KeyDown;
case PlatformEvent::RawKeyDown:
return WebInputEvent::RawKeyDown;
case PlatformEvent::Char:
return WebInputEvent::Char;
default:
return WebInputEvent::Undefined;
}
}
int toWebKeyboardEventModifiers(int modifiers)
{
int newModifiers = 0;
if (modifiers & PlatformEvent::ShiftKey)
newModifiers |= WebInputEvent::ShiftKey;
if (modifiers & PlatformEvent::CtrlKey)
newModifiers |= WebInputEvent::ControlKey;
if (modifiers & PlatformEvent::AltKey)
newModifiers |= WebInputEvent::AltKey;
if (modifiers & PlatformEvent::MetaKey)
newModifiers |= WebInputEvent::MetaKey;
return newModifiers;
}
WebKeyboardEventBuilder::WebKeyboardEventBuilder(const PlatformKeyboardEvent& event)
{
type = toWebKeyboardEventType(event.type());
modifiers = toWebKeyboardEventModifiers(event.modifiers());
if (event.isAutoRepeat())
modifiers |= WebInputEvent::IsAutoRepeat;
if (event.isKeypad())
modifiers |= WebInputEvent::IsKeyPad;
isSystemKey = event.isSystemKey();
nativeKeyCode = event.nativeVirtualKeyCode();
windowsKeyCode = windowsKeyCodeWithoutLocation(event.windowsVirtualKeyCode());
modifiers |= locationModifiersFromWindowsKeyCode(event.windowsVirtualKeyCode());
event.text().copyTo(text, 0, textLengthCap);
event.unmodifiedText().copyTo(unmodifiedText, 0, textLengthCap);
memcpy(keyIdentifier, event.keyIdentifier().ascii().data(), std::min(static_cast<unsigned>(keyIdentifierLengthCap), event.keyIdentifier().length()));
}
static void addTouchPoints(const Widget* widget, const AtomicString& touchType, TouchList* touches, WebTouchPoint* touchPoints, unsigned* touchPointsLength, const RenderObject* renderObject)
{
unsigned numberOfTouches = std::min(touches->length(), static_cast<unsigned>(WebTouchEvent::touchesLengthCap));
for (unsigned i = 0; i < numberOfTouches; ++i) {
const Touch* touch = touches->item(i);
WebTouchPoint point;
point.id = touch->identifier();
point.screenPosition = touch->screenLocation();
point.position = convertAbsoluteLocationForRenderObjectFloat(touch->absoluteLocation(), *renderObject);
point.radiusX = touch->radiusX();
point.radiusY = touch->radiusY();
point.rotationAngle = touch->rotationAngle();
point.force = touch->force();
point.state = toWebTouchPointState(touchType);
touchPoints[i] = point;
}
*touchPointsLength = numberOfTouches;
}
WebTouchEventBuilder::WebTouchEventBuilder(const Widget* widget, const RenderObject* renderObject, const TouchEvent& event)
{
if (event.type() == EventTypeNames::touchstart)
type = TouchStart;
else if (event.type() == EventTypeNames::touchmove)
type = TouchMove;
else if (event.type() == EventTypeNames::touchend)
type = TouchEnd;
else if (event.type() == EventTypeNames::touchcancel)
type = TouchCancel;
else {
ASSERT_NOT_REACHED();
type = Undefined;
return;
}
modifiers = getWebInputModifiers(event);
timeStampSeconds = event.timeStamp() / millisPerSecond;
cancelable = event.cancelable();
addTouchPoints(widget, event.type(), event.touches(), touches, &touchesLength, renderObject);
addTouchPoints(widget, event.type(), event.changedTouches(), changedTouches, &changedTouchesLength, renderObject);
addTouchPoints(widget, event.type(), event.targetTouches(), targetTouches, &targetTouchesLength, renderObject);
}
WebGestureEventBuilder::WebGestureEventBuilder(const Widget* widget, const RenderObject* renderObject, const GestureEvent& event)
{
if (event.type() == EventTypeNames::gestureshowpress)
type = GestureShowPress;
else if (event.type() == EventTypeNames::gesturetapdown)
type = GestureTapDown;
else if (event.type() == EventTypeNames::gesturescrollstart)
type = GestureScrollBegin;
else if (event.type() == EventTypeNames::gesturescrollend)
type = GestureScrollEnd;
else if (event.type() == EventTypeNames::gesturescrollupdate) {
type = GestureScrollUpdate;
data.scrollUpdate.deltaX = event.deltaX();
data.scrollUpdate.deltaY = event.deltaY();
} else if (event.type() == EventTypeNames::gesturetap) {
type = GestureTap;
data.tap.tapCount = 1;
}
timeStampSeconds = event.timeStamp() / millisPerSecond;
modifiers = getWebInputModifiers(event);
globalX = event.screenX();
globalY = event.screenY();
IntPoint localPoint = convertAbsoluteLocationForRenderObject(event.absoluteLocation(), *renderObject);
x = localPoint.x();
y = localPoint.y();
}
} // namespace blink
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