nsEventStatus
SelectionCarets::HandleEvent(WidgetEvent* aEvent)
{
WidgetMouseEvent *mouseEvent = aEvent->AsMouseEvent();
if (mouseEvent && mouseEvent->reason == WidgetMouseEvent::eSynthesized) {
return nsEventStatus_eIgnore;
}
WidgetTouchEvent *touchEvent = aEvent->AsTouchEvent();
nsIntPoint movePoint;
int32_t nowTouchId = -1;
if (touchEvent && !touchEvent->touches.IsEmpty()) {
// If touch happened, just grab event with same identifier
if (mActiveTouchId >= 0) {
for (uint32_t i = 0; i < touchEvent->touches.Length(); ++i) {
if (touchEvent->touches[i]->Identifier() == mActiveTouchId) {
movePoint = touchEvent->touches[i]->mRefPoint;
nowTouchId = touchEvent->touches[i]->Identifier();
break;
}
}
// not found, consume it
if (nowTouchId == -1) {
return nsEventStatus_eConsumeNoDefault;
}
} else {
movePoint = touchEvent->touches[0]->mRefPoint;
nowTouchId = touchEvent->touches[0]->Identifier();
}
} else if (mouseEvent) {
movePoint = LayoutDeviceIntPoint::ToUntyped(mouseEvent->AsGUIEvent()->refPoint);
}
// Get event coordinate relative to canvas frame
nsIFrame* canvasFrame = mPresShell->GetCanvasFrame();
if (!canvasFrame) {
return nsEventStatus_eIgnore;
}
nsPoint ptInCanvas =
nsLayoutUtils::GetEventCoordinatesRelativeTo(aEvent, movePoint, canvasFrame);
if (aEvent->message == NS_TOUCH_START ||
(aEvent->message == NS_MOUSE_BUTTON_DOWN &&
mouseEvent->button == WidgetMouseEvent::eLeftButton)) {
// If having a active touch, ignore other touch down event
if (aEvent->message == NS_TOUCH_START && mActiveTouchId >= 0) {
return nsEventStatus_eConsumeNoDefault;
}
mActiveTouchId = nowTouchId;
mDownPoint = ptInCanvas;
int32_t inflateSize = SelectionCaretsInflateSize();
if (mVisible && IsOnRect(GetStartFrameRect(), ptInCanvas, inflateSize)) {
mDragMode = START_FRAME;
mCaretCenterToDownPointOffsetY = GetCaretYCenterPosition() - ptInCanvas.y;
SetSelectionDirection(false);
SetMouseDownState(true);
return nsEventStatus_eConsumeNoDefault;
} else if (mVisible && IsOnRect(GetEndFrameRect(), ptInCanvas, inflateSize)) {
mDragMode = END_FRAME;
mCaretCenterToDownPointOffsetY = GetCaretYCenterPosition() - ptInCanvas.y;
SetSelectionDirection(true);
SetMouseDownState(true);
return nsEventStatus_eConsumeNoDefault;
} else {
mDragMode = NONE;
mActiveTouchId = -1;
SetVisibility(false);
LaunchLongTapDetector();
}
} else if (aEvent->message == NS_TOUCH_END ||
aEvent->message == NS_TOUCH_CANCEL ||
aEvent->message == NS_MOUSE_BUTTON_UP) {
CancelLongTapDetector();
if (mDragMode != NONE) {
// Only care about same id
if (mActiveTouchId == nowTouchId) {
SetMouseDownState(false);
mDragMode = NONE;
mActiveTouchId = -1;
}
return nsEventStatus_eConsumeNoDefault;
}
} else if (aEvent->message == NS_TOUCH_MOVE ||
aEvent->message == NS_MOUSE_MOVE) {
if (mDragMode == START_FRAME || mDragMode == END_FRAME) {
if (mActiveTouchId == nowTouchId) {
ptInCanvas.y += mCaretCenterToDownPointOffsetY;
return DragSelection(ptInCanvas);
}
return nsEventStatus_eConsumeNoDefault;
}
nsPoint delta = mDownPoint - ptInCanvas;
if (NS_hypot(delta.x, delta.y) >
nsPresContext::AppUnitsPerCSSPixel() * kMoveStartTolerancePx) {
CancelLongTapDetector();
}
} else if (aEvent->message == NS_MOUSE_MOZLONGTAP) {
if (!mVisible) {
SelectWord();
return nsEventStatus_eConsumeNoDefault;
}
}
return nsEventStatus_eIgnore;
}
nsEventStatus
SelectionCarets::HandleEvent(WidgetEvent* aEvent)
{
WidgetMouseEvent *mouseEvent = aEvent->AsMouseEvent();
if (mouseEvent && mouseEvent->reason == WidgetMouseEvent::eSynthesized) {
return nsEventStatus_eIgnore;
}
WidgetTouchEvent *touchEvent = aEvent->AsTouchEvent();
LayoutDeviceIntPoint movePoint;
int32_t nowTouchId = -1;
if (touchEvent && !touchEvent->touches.IsEmpty()) {
// If touch happened, just grab event with same identifier
if (mActiveTouchId >= 0) {
for (uint32_t i = 0; i < touchEvent->touches.Length(); ++i) {
if (touchEvent->touches[i]->Identifier() == mActiveTouchId) {
movePoint = touchEvent->touches[i]->mRefPoint;
nowTouchId = touchEvent->touches[i]->Identifier();
break;
}
}
// not found, consume it
if (nowTouchId == -1) {
return nsEventStatus_eConsumeNoDefault;
}
} else {
movePoint = touchEvent->touches[0]->mRefPoint;
nowTouchId = touchEvent->touches[0]->Identifier();
}
} else if (mouseEvent) {
movePoint = mouseEvent->AsGUIEvent()->refPoint;
}
// XUL has no SelectionCarets elements.
if (!mPresShell->GetSelectionCaretsStartElement() ||
!mPresShell->GetSelectionCaretsEndElement()) {
return nsEventStatus_eIgnore;
}
// Get event coordinate relative to root frame
nsIFrame* rootFrame = mPresShell->GetRootFrame();
if (!rootFrame) {
return nsEventStatus_eIgnore;
}
nsPoint ptInRoot =
nsLayoutUtils::GetEventCoordinatesRelativeTo(aEvent, movePoint, rootFrame);
if (aEvent->mMessage == eTouchStart ||
(aEvent->mMessage == eMouseDown &&
mouseEvent->button == WidgetMouseEvent::eLeftButton)) {
// If having a active touch, ignore other touch down event
if (aEvent->mMessage == eTouchStart && mActiveTouchId >= 0) {
return nsEventStatus_eConsumeNoDefault;
}
mActiveTouchId = nowTouchId;
mDownPoint = ptInRoot;
if (IsOnStartFrameInner(ptInRoot)) {
mDragMode = START_FRAME;
mCaretCenterToDownPointOffsetY = GetCaretYCenterPosition() - ptInRoot.y;
SetSelectionDirection(eDirPrevious);
SetSelectionDragState(true);
return nsEventStatus_eConsumeNoDefault;
} else if (IsOnEndFrameInner(ptInRoot)) {
mDragMode = END_FRAME;
mCaretCenterToDownPointOffsetY = GetCaretYCenterPosition() - ptInRoot.y;
SetSelectionDirection(eDirNext);
SetSelectionDragState(true);
return nsEventStatus_eConsumeNoDefault;
} else {
mDragMode = NONE;
mActiveTouchId = -1;
LaunchLongTapDetector();
}
} else if (aEvent->mMessage == eTouchEnd ||
aEvent->mMessage == eTouchCancel ||
aEvent->mMessage == eMouseUp) {
CancelLongTapDetector();
if (mDragMode != NONE) {
// Only care about same id
if (mActiveTouchId == nowTouchId) {
SetSelectionDragState(false);
mDragMode = NONE;
mActiveTouchId = -1;
}
return nsEventStatus_eConsumeNoDefault;
}
} else if (aEvent->mMessage == eTouchMove || aEvent->mMessage == eMouseMove) {
if (mDragMode == START_FRAME || mDragMode == END_FRAME) {
if (mActiveTouchId == nowTouchId) {
ptInRoot.y += mCaretCenterToDownPointOffsetY;
if (mDragMode == START_FRAME) {
if (ptInRoot.y > mDragDownYBoundary) {
ptInRoot.y = mDragDownYBoundary;
}
} else if (mDragMode == END_FRAME) {
if (ptInRoot.y < mDragUpYBoundary) {
ptInRoot.y = mDragUpYBoundary;
}
}
return DragSelection(ptInRoot);
}
return nsEventStatus_eConsumeNoDefault;
}
nsPoint delta = mDownPoint - ptInRoot;
if (NS_hypot(delta.x, delta.y) >
nsPresContext::AppUnitsPerCSSPixel() * kMoveStartTolerancePx) {
CancelLongTapDetector();
}
} else if (aEvent->mMessage == eMouseLongTap) {
if (!mVisible || !sSelectionCaretDetectsLongTap) {
SELECTIONCARETS_LOG("SelectWord from eMouseLongTap");
mDownPoint = ptInRoot;
nsresult wordSelected = SelectWord();
if (NS_FAILED(wordSelected)) {
SELECTIONCARETS_LOG("SelectWord from eMouseLongTap failed!");
return nsEventStatus_eIgnore;
}
return nsEventStatus_eConsumeNoDefault;
}
}
return nsEventStatus_eIgnore;
}