mirror of
https://github.com/classilla/tenfourfox.git
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1111 lines
31 KiB
C++
1111 lines
31 KiB
C++
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/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
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/* vim: set ts=2 sw=2 et tw=78: */
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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 "mozilla/Logging.h"
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#include "TouchCaret.h"
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#include <algorithm>
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#include "nsBlockFrame.h"
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#include "nsCanvasFrame.h"
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#include "nsCaret.h"
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#include "nsCOMPtr.h"
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#include "nsContentUtils.h"
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#include "nsDOMTokenList.h"
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#include "nsFrameSelection.h"
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#include "nsIContent.h"
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#include "nsIDOMNode.h"
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#include "nsIDOMWindow.h"
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#include "nsIFrame.h"
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#include "nsIInterfaceRequestorUtils.h"
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#include "nsIPresShell.h"
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#include "nsIScrollableFrame.h"
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#include "nsISelection.h"
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#include "nsISelectionController.h"
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#include "nsISelectionPrivate.h"
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#include "nsPresContext.h"
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#include "nsQueryContentEventResult.h"
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#include "nsView.h"
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#include "mozilla/dom/SelectionStateChangedEvent.h"
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#include "mozilla/dom/CustomEvent.h"
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#include "mozilla/BasicEvents.h"
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#include "mozilla/Preferences.h"
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using namespace mozilla;
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static const char* kTouchCaretLogModuleName = "TouchCaret";
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static mozilla::LazyLogModule gTouchCaretLog(kTouchCaretLogModuleName);
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// To enable all the TOUCHCARET_LOG print statements, set the environment
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// variable NSPR_LOG_MODULES=TouchCaret:5
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#define TOUCHCARET_LOG(message, ...) \
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MOZ_LOG(gTouchCaretLog, LogLevel::Debug, \
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("TouchCaret (%p): %s:%d : " message "\n", this, __FUNCTION__, \
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__LINE__, ##__VA_ARGS__));
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#define TOUCHCARET_LOG_STATIC(message, ...) \
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MOZ_LOG(gTouchCaretLog, LogLevel::Debug, \
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("TouchCaret: %s:%d : " message "\n", __FUNCTION__, __LINE__, \
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##__VA_ARGS__));
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// Click on the boundary of input/textarea will place the caret at the
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// front/end of the content. To advoid this, we need to deflate the content
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// boundary by 61 app units (1 pixel + 1 app unit).
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static const int32_t kBoundaryAppUnits = 61;
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NS_IMPL_ISUPPORTS(TouchCaret,
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nsISelectionListener,
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nsIScrollObserver,
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nsISupportsWeakReference)
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/*static*/ int32_t TouchCaret::sTouchCaretInflateSize = 0;
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/*static*/ int32_t TouchCaret::sTouchCaretExpirationTime = 0;
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TouchCaret::TouchCaret(nsIPresShell* aPresShell)
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: mState(TOUCHCARET_NONE),
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mActiveTouchId(-1),
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mCaretCenterToDownPointOffsetY(0),
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mInAsyncPanZoomGesture(false),
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mVisible(false)
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{
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MOZ_ASSERT(NS_IsMainThread());
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TOUCHCARET_LOG("Constructor, PresShell=%p", aPresShell);
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static bool addedTouchCaretPref = false;
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if (!addedTouchCaretPref) {
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Preferences::AddIntVarCache(&sTouchCaretInflateSize,
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"touchcaret.inflatesize.threshold");
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Preferences::AddIntVarCache(&sTouchCaretExpirationTime,
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"touchcaret.expiration.time");
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addedTouchCaretPref = true;
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}
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// The presshell owns us, so no addref.
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mPresShell = do_GetWeakReference(aPresShell);
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MOZ_ASSERT(mPresShell, "Hey, pres shell should support weak refs");
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}
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void
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TouchCaret::Init()
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{
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nsCOMPtr<nsIPresShell> presShell = do_QueryReferent(mPresShell);
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if (!presShell) {
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return;
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}
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nsPresContext* presContext = presShell->GetPresContext();
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MOZ_ASSERT(presContext, "PresContext should be given in PresShell::Init()");
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nsIDocShell* docShell = presContext->GetDocShell();
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if (!docShell) {
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return;
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}
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docShell->AddWeakScrollObserver(this);
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mDocShell = static_cast<nsDocShell*>(docShell);
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}
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void
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TouchCaret::Terminate()
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{
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RefPtr<nsDocShell> docShell(mDocShell.get());
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if (docShell) {
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docShell->RemoveWeakScrollObserver(this);
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}
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if (mScrollEndDetectorTimer) {
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mScrollEndDetectorTimer->Cancel();
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mScrollEndDetectorTimer = nullptr;
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}
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mDocShell = WeakPtr<nsDocShell>();
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mPresShell = nullptr;
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}
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TouchCaret::~TouchCaret()
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{
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TOUCHCARET_LOG("Destructor");
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MOZ_ASSERT(NS_IsMainThread());
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if (mTouchCaretExpirationTimer) {
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mTouchCaretExpirationTimer->Cancel();
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mTouchCaretExpirationTimer = nullptr;
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}
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}
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nsIFrame*
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TouchCaret::GetCaretFocusFrame(nsRect* aOutRect)
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{
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nsCOMPtr<nsIPresShell> presShell = do_QueryReferent(mPresShell);
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if (!presShell) {
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return nullptr;
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}
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RefPtr<nsCaret> caret = presShell->GetCaret();
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if (!caret) {
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return nullptr;
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}
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nsRect rect;
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nsIFrame* frame = caret->GetGeometry(&rect);
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if (aOutRect) {
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*aOutRect = rect;
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}
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return frame;
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}
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nsCanvasFrame*
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TouchCaret::GetCanvasFrame()
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{
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nsCOMPtr<nsIPresShell> presShell = do_QueryReferent(mPresShell);
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if (!presShell) {
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return nullptr;
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}
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return presShell->GetCanvasFrame();
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}
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nsIFrame*
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TouchCaret::GetRootFrame()
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{
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nsCOMPtr<nsIPresShell> presShell = do_QueryReferent(mPresShell);
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if (!presShell) {
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return nullptr;
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}
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return presShell->GetRootFrame();
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}
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void
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TouchCaret::SetVisibility(bool aVisible)
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{
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if (mVisible == aVisible) {
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TOUCHCARET_LOG("Set visibility %s, same as the old one",
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(aVisible ? "shown" : "hidden"));
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return;
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}
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nsCOMPtr<nsIPresShell> presShell = do_QueryReferent(mPresShell);
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if (!presShell) {
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return;
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}
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mozilla::dom::Element* touchCaretElement = presShell->GetTouchCaretElement();
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if (!touchCaretElement) {
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return;
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}
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mVisible = aVisible;
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// Set touch caret visibility.
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ErrorResult err;
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touchCaretElement->ClassList()->Toggle(NS_LITERAL_STRING("hidden"),
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dom::Optional<bool>(!mVisible),
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err);
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TOUCHCARET_LOG("Set visibility %s", (mVisible ? "shown" : "hidden"));
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// Set touch caret expiration time.
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mVisible ? LaunchExpirationTimer() : CancelExpirationTimer();
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}
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nsRect
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TouchCaret::GetTouchFrameRect()
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{
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nsCOMPtr<nsIPresShell> presShell = do_QueryReferent(mPresShell);
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if (!presShell) {
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return nsRect();
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}
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dom::Element* touchCaretElement = presShell->GetTouchCaretElement();
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nsIFrame* canvasFrame = GetCanvasFrame();
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return nsLayoutUtils::GetRectRelativeToFrame(touchCaretElement, canvasFrame);
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}
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nsRect
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TouchCaret::GetContentBoundary()
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{
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nsIFrame* focusFrame = GetCaretFocusFrame();
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nsIFrame* canvasFrame = GetCanvasFrame();
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if (!focusFrame || !canvasFrame) {
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return nsRect();
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}
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// Get the editing host to determine the touch caret dragable boundary.
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dom::Element* editingHost = focusFrame->GetContent()->GetEditingHost();
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if (!editingHost) {
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return nsRect();
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}
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nsRect resultRect;
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for (nsIFrame* frame = editingHost->GetPrimaryFrame(); frame;
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frame = frame->GetNextContinuation()) {
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nsRect rect = frame->GetContentRectRelativeToSelf();
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nsLayoutUtils::TransformRect(frame, canvasFrame, rect);
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resultRect = resultRect.Union(rect);
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mozilla::layout::FrameChildListIterator lists(frame);
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for (; !lists.IsDone(); lists.Next()) {
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// Loop over all children to take the overflow rect in to consideration.
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nsFrameList::Enumerator childFrames(lists.CurrentList());
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for (; !childFrames.AtEnd(); childFrames.Next()) {
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nsIFrame* kid = childFrames.get();
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nsRect overflowRect = kid->GetScrollableOverflowRect();
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nsLayoutUtils::TransformRect(kid, canvasFrame, overflowRect);
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resultRect = resultRect.Union(overflowRect);
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}
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}
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}
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// Shrink rect to make sure we never hit the boundary.
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resultRect.Deflate(kBoundaryAppUnits);
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return resultRect;
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}
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nscoord
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TouchCaret::GetCaretYCenterPosition()
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{
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nsRect caretRect;
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nsIFrame* focusFrame = GetCaretFocusFrame(&caretRect);
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nsIFrame* canvasFrame = GetCanvasFrame();
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nsLayoutUtils::TransformRect(focusFrame, canvasFrame, caretRect);
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return (caretRect.y + caretRect.height / 2);
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}
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void
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TouchCaret::SetTouchFramePos(const nsRect& aCaretRect)
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{
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nsCOMPtr<nsIPresShell> presShell = do_QueryReferent(mPresShell);
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if (!presShell) {
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return;
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}
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mozilla::dom::Element* touchCaretElement = presShell->GetTouchCaretElement();
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if (!touchCaretElement) {
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return;
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}
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// Convert aOrigin to CSS pixels.
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RefPtr<nsPresContext> presContext = presShell->GetPresContext();
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int32_t x = presContext->AppUnitsToIntCSSPixels(aCaretRect.Center().x);
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int32_t y = presContext->AppUnitsToIntCSSPixels(aCaretRect.y);
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int32_t padding = presContext->AppUnitsToIntCSSPixels(aCaretRect.height);
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nsAutoString styleStr;
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styleStr.AppendLiteral("left: ");
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styleStr.AppendInt(x);
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styleStr.AppendLiteral("px; top: ");
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styleStr.AppendInt(y);
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styleStr.AppendLiteral("px; padding-top: ");
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styleStr.AppendInt(padding);
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styleStr.AppendLiteral("px;");
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TOUCHCARET_LOG("Set style: %s", NS_ConvertUTF16toUTF8(styleStr).get());
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touchCaretElement->SetAttr(kNameSpaceID_None, nsGkAtoms::style,
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styleStr, true);
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}
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void
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TouchCaret::MoveCaret(const nsPoint& movePoint)
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{
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nsIFrame* focusFrame = GetCaretFocusFrame();
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nsIFrame* canvasFrame = GetCanvasFrame();
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if (!focusFrame && !canvasFrame) {
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return;
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}
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nsIFrame* scrollable =
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nsLayoutUtils::GetClosestFrameOfType(focusFrame, nsGkAtoms::scrollFrame);
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// Convert touch/mouse position to frame coordinates.
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nsPoint offsetToCanvasFrame = nsPoint(0,0);
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nsLayoutUtils::TransformPoint(scrollable, canvasFrame, offsetToCanvasFrame);
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nsPoint pt = movePoint - offsetToCanvasFrame;
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// Evaluate offsets.
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nsIFrame::ContentOffsets offsets =
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scrollable->GetContentOffsetsFromPoint(pt, nsIFrame::SKIP_HIDDEN);
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// Move caret position.
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nsWeakFrame weakScrollable = scrollable;
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RefPtr<nsFrameSelection> fs = scrollable->GetFrameSelection();
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fs->HandleClick(offsets.content, offsets.StartOffset(),
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offsets.EndOffset(),
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false,
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false,
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offsets.associate);
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if (!weakScrollable.IsAlive()) {
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return;
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}
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// Scroll scrolled frame.
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nsIScrollableFrame* saf = do_QueryFrame(scrollable);
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nsIFrame* capturingFrame = saf->GetScrolledFrame();
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offsetToCanvasFrame = nsPoint(0,0);
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nsLayoutUtils::TransformPoint(capturingFrame, canvasFrame, offsetToCanvasFrame);
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pt = movePoint - offsetToCanvasFrame;
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fs->StartAutoScrollTimer(capturingFrame, pt, sAutoScrollTimerDelay);
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}
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bool
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TouchCaret::IsOnTouchCaret(const nsPoint& aPoint)
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{
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return mVisible && nsLayoutUtils::ContainsPoint(GetTouchFrameRect(), aPoint,
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TouchCaretInflateSize());
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}
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nsresult
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TouchCaret::NotifySelectionChanged(nsIDOMDocument* aDoc, nsISelection* aSel,
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int16_t aReason)
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{
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TOUCHCARET_LOG("aSel (%p), Reason=%d", aSel, aReason);
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// Hide touch caret while no caret exists.
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nsCOMPtr<nsIPresShell> presShell = do_QueryReferent(mPresShell);
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if (!presShell) {
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return NS_OK;
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}
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RefPtr<nsCaret> caret = presShell->GetCaret();
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if (!caret) {
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SetVisibility(false);
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return NS_OK;
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}
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// The same touch caret is shared amongst the document and any text widgets it
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// may contain. This means that the touch caret could get notifications from
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// multiple selections.
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// If this notification is for a selection that is not the one the
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// the caret is currently interested in , then there is nothing to do!
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if (aSel != caret->GetSelection()) {
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TOUCHCARET_LOG("Return for selection mismatch!");
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return NS_OK;
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}
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// Update touch caret position and visibility.
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// Hide touch caret while key event causes selection change.
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// Also hide touch caret when gecko or javascript collapse the selection.
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if (aReason & nsISelectionListener::KEYPRESS_REASON ||
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aReason & nsISelectionListener::COLLAPSETOSTART_REASON ||
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aReason & nsISelectionListener::COLLAPSETOEND_REASON) {
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TOUCHCARET_LOG("KEYPRESS_REASON");
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SetVisibility(false);
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} else {
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SyncVisibilityWithCaret();
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}
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return NS_OK;
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}
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/**
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* Used to update caret position after PanZoom stops for
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* extended caret visibility. Never needed by MOZ_WIDGET_GONK.
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*/
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void
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TouchCaret::AsyncPanZoomStarted()
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{
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}
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void
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TouchCaret::AsyncPanZoomStopped()
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{
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if (mInAsyncPanZoomGesture) {
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mInAsyncPanZoomGesture = false;
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UpdatePosition();
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}
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}
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/**
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* Used to update caret position after Scroll stops for
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* extended caret visibility. Never needed by MOZ_WIDGET_GONK.
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*/
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void
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TouchCaret::ScrollPositionChanged()
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{
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}
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void
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TouchCaret::LaunchScrollEndDetector()
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{
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if (!mScrollEndDetectorTimer) {
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mScrollEndDetectorTimer = do_CreateInstance("@mozilla.org/timer;1");
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}
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MOZ_ASSERT(mScrollEndDetectorTimer);
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mScrollEndDetectorTimer->InitWithFuncCallback(FireScrollEnd,
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this,
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||
|
sScrollEndTimerDelay,
|
||
|
nsITimer::TYPE_ONE_SHOT);
|
||
|
}
|
||
|
|
||
|
void
|
||
|
TouchCaret::CancelScrollEndDetector()
|
||
|
{
|
||
|
if (mScrollEndDetectorTimer) {
|
||
|
mScrollEndDetectorTimer->Cancel();
|
||
|
}
|
||
|
}
|
||
|
|
||
|
|
||
|
/* static */void
|
||
|
TouchCaret::FireScrollEnd(nsITimer* aTimer, void* aTouchCaret)
|
||
|
{
|
||
|
RefPtr<TouchCaret> self = static_cast<TouchCaret*>(aTouchCaret);
|
||
|
NS_PRECONDITION(aTimer == self->mScrollEndDetectorTimer,
|
||
|
"Unexpected timer");
|
||
|
self->UpdatePosition();
|
||
|
}
|
||
|
|
||
|
void
|
||
|
TouchCaret::SyncVisibilityWithCaret()
|
||
|
{
|
||
|
TOUCHCARET_LOG("SyncVisibilityWithCaret");
|
||
|
|
||
|
if (!IsDisplayable()) {
|
||
|
SetVisibility(false);
|
||
|
return;
|
||
|
}
|
||
|
|
||
|
SetVisibility(true);
|
||
|
if (mVisible) {
|
||
|
UpdatePosition();
|
||
|
}
|
||
|
}
|
||
|
|
||
|
void
|
||
|
TouchCaret::UpdatePositionIfNeeded()
|
||
|
{
|
||
|
TOUCHCARET_LOG("UpdatePositionIfNeeded");
|
||
|
|
||
|
if (!IsDisplayable()) {
|
||
|
SetVisibility(false);
|
||
|
return;
|
||
|
}
|
||
|
|
||
|
if (mVisible) {
|
||
|
UpdatePosition();
|
||
|
}
|
||
|
}
|
||
|
|
||
|
bool
|
||
|
TouchCaret::IsDisplayable()
|
||
|
{
|
||
|
nsCOMPtr<nsIPresShell> presShell = do_QueryReferent(mPresShell);
|
||
|
if (!presShell) {
|
||
|
TOUCHCARET_LOG("PresShell is nullptr!");
|
||
|
return false;
|
||
|
}
|
||
|
|
||
|
RefPtr<nsCaret> caret = presShell->GetCaret();
|
||
|
if (!caret) {
|
||
|
TOUCHCARET_LOG("Caret is nullptr!");
|
||
|
return false;
|
||
|
}
|
||
|
|
||
|
nsIFrame* canvasFrame = GetCanvasFrame();
|
||
|
if (!canvasFrame) {
|
||
|
TOUCHCARET_LOG("No canvas frame!");
|
||
|
return false;
|
||
|
}
|
||
|
|
||
|
nsIFrame* rootFrame = GetRootFrame();
|
||
|
if (!rootFrame) {
|
||
|
TOUCHCARET_LOG("No root frame!");
|
||
|
return false;
|
||
|
}
|
||
|
|
||
|
dom::Element* touchCaretElement = presShell->GetTouchCaretElement();
|
||
|
if (!touchCaretElement) {
|
||
|
TOUCHCARET_LOG("No touch caret frame element!");
|
||
|
return false;
|
||
|
}
|
||
|
|
||
|
if (presShell->IsPaintingSuppressed()) {
|
||
|
TOUCHCARET_LOG("PresShell is suppressing painting!");
|
||
|
return false;
|
||
|
}
|
||
|
|
||
|
if (!caret->IsVisible()) {
|
||
|
TOUCHCARET_LOG("Caret is not visible!");
|
||
|
return false;
|
||
|
}
|
||
|
|
||
|
nsRect focusRect;
|
||
|
nsIFrame* focusFrame = caret->GetGeometry(&focusRect);
|
||
|
if (!focusFrame) {
|
||
|
TOUCHCARET_LOG("Focus frame is not valid!");
|
||
|
return false;
|
||
|
}
|
||
|
|
||
|
dom::Element* editingHost = focusFrame->GetContent()->GetEditingHost();
|
||
|
if (!editingHost) {
|
||
|
TOUCHCARET_LOG("Cannot get editing host!");
|
||
|
return false;
|
||
|
}
|
||
|
|
||
|
if (focusRect.IsEmpty()) {
|
||
|
TOUCHCARET_LOG("Focus rect is empty!");
|
||
|
return false;
|
||
|
}
|
||
|
|
||
|
if (!nsContentUtils::HasNonEmptyTextContent(
|
||
|
editingHost, nsContentUtils::eRecurseIntoChildren)) {
|
||
|
TOUCHCARET_LOG("The content is empty!");
|
||
|
return false;
|
||
|
}
|
||
|
|
||
|
if (mState != TOUCHCARET_TOUCHDRAG_ACTIVE &&
|
||
|
!nsLayoutUtils::IsRectVisibleInScrollFrames(focusFrame, focusRect)) {
|
||
|
TOUCHCARET_LOG("Caret does not show in the scrollable frame!");
|
||
|
return false;
|
||
|
}
|
||
|
|
||
|
TOUCHCARET_LOG("Touch caret is displayable!");
|
||
|
return true;
|
||
|
}
|
||
|
|
||
|
void
|
||
|
TouchCaret::UpdatePosition()
|
||
|
{
|
||
|
MOZ_ASSERT(mVisible);
|
||
|
|
||
|
nsRect rect = GetTouchCaretRect();
|
||
|
rect = ClampRectToScrollFrame(rect);
|
||
|
SetTouchFramePos(rect);
|
||
|
}
|
||
|
|
||
|
nsRect
|
||
|
TouchCaret::GetTouchCaretRect()
|
||
|
{
|
||
|
nsRect focusRect;
|
||
|
nsIFrame* focusFrame = GetCaretFocusFrame(&focusRect);
|
||
|
nsIFrame* rootFrame = GetRootFrame();
|
||
|
// Transform the position to make it relative to root frame.
|
||
|
nsLayoutUtils::TransformRect(focusFrame, rootFrame, focusRect);
|
||
|
|
||
|
return focusRect;
|
||
|
}
|
||
|
|
||
|
nsRect
|
||
|
TouchCaret::ClampRectToScrollFrame(const nsRect& aRect)
|
||
|
{
|
||
|
nsRect rect = aRect;
|
||
|
nsIFrame* focusFrame = GetCaretFocusFrame();
|
||
|
nsIFrame* rootFrame = GetRootFrame();
|
||
|
|
||
|
// Clamp the touch caret position to the scrollframe boundary.
|
||
|
nsIFrame* closestScrollFrame =
|
||
|
nsLayoutUtils::GetClosestFrameOfType(focusFrame, nsGkAtoms::scrollFrame);
|
||
|
|
||
|
while (closestScrollFrame) {
|
||
|
nsIScrollableFrame* sf = do_QueryFrame(closestScrollFrame);
|
||
|
nsRect visualRect = sf->GetScrollPortRect();
|
||
|
|
||
|
// Clamp the touch caret in the scroll port.
|
||
|
nsLayoutUtils::TransformRect(closestScrollFrame, rootFrame, visualRect);
|
||
|
rect = rect.Intersect(visualRect);
|
||
|
|
||
|
// Get next ancestor scroll frame.
|
||
|
closestScrollFrame =
|
||
|
nsLayoutUtils::GetClosestFrameOfType(closestScrollFrame->GetParent(),
|
||
|
nsGkAtoms::scrollFrame);
|
||
|
}
|
||
|
|
||
|
return rect;
|
||
|
}
|
||
|
|
||
|
/* static */void
|
||
|
TouchCaret::DisableTouchCaretCallback(nsITimer* aTimer, void* aTouchCaret)
|
||
|
{
|
||
|
RefPtr<TouchCaret> self = static_cast<TouchCaret*>(aTouchCaret);
|
||
|
NS_PRECONDITION(aTimer == self->mTouchCaretExpirationTimer,
|
||
|
"Unexpected timer");
|
||
|
|
||
|
self->SetVisibility(false);
|
||
|
}
|
||
|
|
||
|
void
|
||
|
TouchCaret::LaunchExpirationTimer()
|
||
|
{
|
||
|
if (TouchCaretExpirationTime() > 0) {
|
||
|
if (!mTouchCaretExpirationTimer) {
|
||
|
mTouchCaretExpirationTimer = do_CreateInstance("@mozilla.org/timer;1");
|
||
|
}
|
||
|
|
||
|
if (mTouchCaretExpirationTimer) {
|
||
|
mTouchCaretExpirationTimer->Cancel();
|
||
|
mTouchCaretExpirationTimer->InitWithFuncCallback(DisableTouchCaretCallback,
|
||
|
this,
|
||
|
TouchCaretExpirationTime(),
|
||
|
nsITimer::TYPE_ONE_SHOT);
|
||
|
}
|
||
|
}
|
||
|
}
|
||
|
|
||
|
void
|
||
|
TouchCaret::CancelExpirationTimer()
|
||
|
{
|
||
|
if (mTouchCaretExpirationTimer) {
|
||
|
mTouchCaretExpirationTimer->Cancel();
|
||
|
}
|
||
|
}
|
||
|
|
||
|
void
|
||
|
TouchCaret::SetSelectionDragState(bool aState)
|
||
|
{
|
||
|
nsIFrame* caretFocusFrame = GetCaretFocusFrame();
|
||
|
if (!caretFocusFrame) {
|
||
|
return;
|
||
|
}
|
||
|
|
||
|
RefPtr<nsFrameSelection> fs = caretFocusFrame->GetFrameSelection();
|
||
|
fs->SetDragState(aState);
|
||
|
}
|
||
|
|
||
|
nsEventStatus
|
||
|
TouchCaret::HandleEvent(WidgetEvent* aEvent)
|
||
|
{
|
||
|
MOZ_ASSERT(NS_IsMainThread());
|
||
|
if (!IsDisplayable()) {
|
||
|
return nsEventStatus_eIgnore;
|
||
|
}
|
||
|
|
||
|
nsEventStatus status = nsEventStatus_eIgnore;
|
||
|
|
||
|
switch (aEvent->mMessage) {
|
||
|
case eTouchStart:
|
||
|
status = HandleTouchDownEvent(aEvent->AsTouchEvent());
|
||
|
break;
|
||
|
case eMouseDown:
|
||
|
status = HandleMouseDownEvent(aEvent->AsMouseEvent());
|
||
|
break;
|
||
|
case eTouchEnd:
|
||
|
status = HandleTouchUpEvent(aEvent->AsTouchEvent());
|
||
|
break;
|
||
|
case eMouseUp:
|
||
|
status = HandleMouseUpEvent(aEvent->AsMouseEvent());
|
||
|
break;
|
||
|
case eTouchMove:
|
||
|
status = HandleTouchMoveEvent(aEvent->AsTouchEvent());
|
||
|
break;
|
||
|
case eMouseMove:
|
||
|
status = HandleMouseMoveEvent(aEvent->AsMouseEvent());
|
||
|
break;
|
||
|
case eTouchCancel:
|
||
|
mTouchesId.Clear();
|
||
|
SetState(TOUCHCARET_NONE);
|
||
|
LaunchExpirationTimer();
|
||
|
break;
|
||
|
case eKeyUp:
|
||
|
case eKeyDown:
|
||
|
case eKeyPress:
|
||
|
case eWheel:
|
||
|
case eWheelOperationStart:
|
||
|
case eWheelOperationEnd:
|
||
|
// Disable touch caret while key/wheel event is received.
|
||
|
TOUCHCARET_LOG("Receive key/wheel event %d", aEvent->mMessage);
|
||
|
SetVisibility(false);
|
||
|
break;
|
||
|
case eMouseLongTap:
|
||
|
if (mState == TOUCHCARET_TOUCHDRAG_ACTIVE) {
|
||
|
// Disable long tap event from APZ while dragging the touch caret.
|
||
|
status = nsEventStatus_eConsumeNoDefault;
|
||
|
}
|
||
|
break;
|
||
|
default:
|
||
|
break;
|
||
|
}
|
||
|
|
||
|
return status;
|
||
|
}
|
||
|
|
||
|
nsPoint
|
||
|
TouchCaret::GetEventPosition(WidgetTouchEvent* aEvent, int32_t aIdentifier)
|
||
|
{
|
||
|
for (size_t i = 0; i < aEvent->touches.Length(); i++) {
|
||
|
if (aEvent->touches[i]->mIdentifier == aIdentifier) {
|
||
|
// Get event coordinate relative to canvas frame.
|
||
|
nsIFrame* canvasFrame = GetCanvasFrame();
|
||
|
LayoutDeviceIntPoint touchIntPoint = aEvent->touches[i]->mRefPoint;
|
||
|
return nsLayoutUtils::GetEventCoordinatesRelativeTo(aEvent,
|
||
|
touchIntPoint,
|
||
|
canvasFrame);
|
||
|
}
|
||
|
}
|
||
|
return nsPoint(NS_UNCONSTRAINEDSIZE, NS_UNCONSTRAINEDSIZE);
|
||
|
}
|
||
|
|
||
|
nsPoint
|
||
|
TouchCaret::GetEventPosition(WidgetMouseEvent* aEvent)
|
||
|
{
|
||
|
// Get event coordinate relative to canvas frame.
|
||
|
nsIFrame* canvasFrame = GetCanvasFrame();
|
||
|
LayoutDeviceIntPoint mouseIntPoint = aEvent->AsGUIEvent()->refPoint;
|
||
|
return nsLayoutUtils::GetEventCoordinatesRelativeTo(aEvent,
|
||
|
mouseIntPoint,
|
||
|
canvasFrame);
|
||
|
}
|
||
|
|
||
|
nsEventStatus
|
||
|
TouchCaret::HandleMouseMoveEvent(WidgetMouseEvent* aEvent)
|
||
|
{
|
||
|
TOUCHCARET_LOG("Got a mouse-move in state %d", mState);
|
||
|
nsEventStatus status = nsEventStatus_eIgnore;
|
||
|
|
||
|
switch (mState) {
|
||
|
case TOUCHCARET_NONE:
|
||
|
break;
|
||
|
|
||
|
case TOUCHCARET_MOUSEDRAG_ACTIVE:
|
||
|
{
|
||
|
nsPoint movePoint = GetEventPosition(aEvent);
|
||
|
movePoint.y += mCaretCenterToDownPointOffsetY;
|
||
|
nsRect contentBoundary = GetContentBoundary();
|
||
|
movePoint = contentBoundary.ClampPoint(movePoint);
|
||
|
|
||
|
MoveCaret(movePoint);
|
||
|
mIsValidTap = false;
|
||
|
status = nsEventStatus_eConsumeNoDefault;
|
||
|
}
|
||
|
break;
|
||
|
|
||
|
case TOUCHCARET_TOUCHDRAG_ACTIVE:
|
||
|
case TOUCHCARET_TOUCHDRAG_INACTIVE:
|
||
|
// Consume mouse event in touch sequence.
|
||
|
status = nsEventStatus_eConsumeNoDefault;
|
||
|
break;
|
||
|
}
|
||
|
|
||
|
return status;
|
||
|
}
|
||
|
|
||
|
nsEventStatus
|
||
|
TouchCaret::HandleTouchMoveEvent(WidgetTouchEvent* aEvent)
|
||
|
{
|
||
|
TOUCHCARET_LOG("Got a touch-move in state %d", mState);
|
||
|
nsEventStatus status = nsEventStatus_eIgnore;
|
||
|
|
||
|
switch (mState) {
|
||
|
case TOUCHCARET_NONE:
|
||
|
break;
|
||
|
|
||
|
case TOUCHCARET_MOUSEDRAG_ACTIVE:
|
||
|
// Consume touch event in mouse sequence.
|
||
|
status = nsEventStatus_eConsumeNoDefault;
|
||
|
break;
|
||
|
|
||
|
case TOUCHCARET_TOUCHDRAG_ACTIVE:
|
||
|
{
|
||
|
nsPoint movePoint = GetEventPosition(aEvent, mActiveTouchId);
|
||
|
movePoint.y += mCaretCenterToDownPointOffsetY;
|
||
|
nsRect contentBoundary = GetContentBoundary();
|
||
|
movePoint = contentBoundary.ClampPoint(movePoint);
|
||
|
|
||
|
MoveCaret(movePoint);
|
||
|
mIsValidTap = false;
|
||
|
status = nsEventStatus_eConsumeNoDefault;
|
||
|
}
|
||
|
break;
|
||
|
|
||
|
case TOUCHCARET_TOUCHDRAG_INACTIVE:
|
||
|
// Consume eTouchMove event in TOUCHCARET_TOUCHDRAG_INACTIVE state.
|
||
|
status = nsEventStatus_eConsumeNoDefault;
|
||
|
break;
|
||
|
}
|
||
|
|
||
|
return status;
|
||
|
}
|
||
|
|
||
|
nsEventStatus
|
||
|
TouchCaret::HandleMouseUpEvent(WidgetMouseEvent* aEvent)
|
||
|
{
|
||
|
TOUCHCARET_LOG("Got a mouse-up in state %d", mState);
|
||
|
nsEventStatus status = nsEventStatus_eIgnore;
|
||
|
|
||
|
switch (mState) {
|
||
|
case TOUCHCARET_NONE:
|
||
|
break;
|
||
|
|
||
|
case TOUCHCARET_MOUSEDRAG_ACTIVE:
|
||
|
if (aEvent->button == WidgetMouseEvent::eLeftButton) {
|
||
|
SetSelectionDragState(false);
|
||
|
LaunchExpirationTimer();
|
||
|
SetState(TOUCHCARET_NONE);
|
||
|
status = nsEventStatus_eConsumeNoDefault;
|
||
|
}
|
||
|
break;
|
||
|
|
||
|
case TOUCHCARET_TOUCHDRAG_ACTIVE:
|
||
|
case TOUCHCARET_TOUCHDRAG_INACTIVE:
|
||
|
// Consume mouse event in touch sequence.
|
||
|
status = nsEventStatus_eConsumeNoDefault;
|
||
|
break;
|
||
|
}
|
||
|
|
||
|
return status;
|
||
|
}
|
||
|
|
||
|
nsEventStatus
|
||
|
TouchCaret::HandleTouchUpEvent(WidgetTouchEvent* aEvent)
|
||
|
{
|
||
|
TOUCHCARET_LOG("Got a touch-end in state %d", mState);
|
||
|
// Remove touches from cache if the stroke is gone in TOUCHDRAG states.
|
||
|
if (mState == TOUCHCARET_TOUCHDRAG_ACTIVE ||
|
||
|
mState == TOUCHCARET_TOUCHDRAG_INACTIVE) {
|
||
|
for (size_t i = 0; i < aEvent->touches.Length(); i++) {
|
||
|
nsTArray<int32_t>::index_type index =
|
||
|
mTouchesId.IndexOf(aEvent->touches[i]->mIdentifier);
|
||
|
MOZ_ASSERT(index != nsTArray<int32_t>::NoIndex);
|
||
|
mTouchesId.RemoveElementAt(index);
|
||
|
}
|
||
|
}
|
||
|
|
||
|
nsEventStatus status = nsEventStatus_eIgnore;
|
||
|
|
||
|
switch (mState) {
|
||
|
case TOUCHCARET_NONE:
|
||
|
break;
|
||
|
|
||
|
case TOUCHCARET_MOUSEDRAG_ACTIVE:
|
||
|
// Consume touch event in mouse sequence.
|
||
|
status = nsEventStatus_eConsumeNoDefault;
|
||
|
break;
|
||
|
|
||
|
case TOUCHCARET_TOUCHDRAG_ACTIVE:
|
||
|
if (mTouchesId.Length() == 0) {
|
||
|
SetSelectionDragState(false);
|
||
|
// No more finger on the screen.
|
||
|
SetState(TOUCHCARET_NONE);
|
||
|
LaunchExpirationTimer();
|
||
|
} else {
|
||
|
// Still has finger touching on the screen.
|
||
|
if (aEvent->touches[0]->mIdentifier == mActiveTouchId) {
|
||
|
// Remove finger from the touch caret.
|
||
|
SetState(TOUCHCARET_TOUCHDRAG_INACTIVE);
|
||
|
LaunchExpirationTimer();
|
||
|
} else {
|
||
|
// If the finger removed is not the finger on touch caret, remain in
|
||
|
// TOUCHCARET_DRAG_ACTIVE state.
|
||
|
}
|
||
|
}
|
||
|
status = nsEventStatus_eConsumeNoDefault;
|
||
|
break;
|
||
|
|
||
|
case TOUCHCARET_TOUCHDRAG_INACTIVE:
|
||
|
if (mTouchesId.Length() == 0) {
|
||
|
// No more finger on the screen.
|
||
|
SetState(TOUCHCARET_NONE);
|
||
|
}
|
||
|
status = nsEventStatus_eConsumeNoDefault;
|
||
|
break;
|
||
|
}
|
||
|
|
||
|
return status;
|
||
|
}
|
||
|
|
||
|
nsEventStatus
|
||
|
TouchCaret::HandleMouseDownEvent(WidgetMouseEvent* aEvent)
|
||
|
{
|
||
|
TOUCHCARET_LOG("Got a mouse-down in state %d", mState);
|
||
|
if (!GetVisibility()) {
|
||
|
// If touch caret is invisible, bypass event.
|
||
|
return nsEventStatus_eIgnore;
|
||
|
}
|
||
|
|
||
|
nsEventStatus status = nsEventStatus_eIgnore;
|
||
|
|
||
|
switch (mState) {
|
||
|
case TOUCHCARET_NONE:
|
||
|
if (aEvent->button == WidgetMouseEvent::eLeftButton) {
|
||
|
nsPoint point = GetEventPosition(aEvent);
|
||
|
if (IsOnTouchCaret(point)) {
|
||
|
SetSelectionDragState(true);
|
||
|
// Cache distence of the event point to the center of touch caret.
|
||
|
mCaretCenterToDownPointOffsetY = GetCaretYCenterPosition() - point.y;
|
||
|
// Enter TOUCHCARET_MOUSEDRAG_ACTIVE state and cancel the timer.
|
||
|
SetState(TOUCHCARET_MOUSEDRAG_ACTIVE);
|
||
|
CancelExpirationTimer();
|
||
|
status = nsEventStatus_eConsumeNoDefault;
|
||
|
} else {
|
||
|
// Set touch caret invisible if HisTest fails. Bypass event.
|
||
|
SetVisibility(false);
|
||
|
status = nsEventStatus_eIgnore;
|
||
|
}
|
||
|
} else {
|
||
|
// Set touch caret invisible if not left button down event.
|
||
|
SetVisibility(false);
|
||
|
status = nsEventStatus_eIgnore;
|
||
|
}
|
||
|
break;
|
||
|
|
||
|
case TOUCHCARET_MOUSEDRAG_ACTIVE:
|
||
|
SetVisibility(false);
|
||
|
SetState(TOUCHCARET_NONE);
|
||
|
break;
|
||
|
|
||
|
case TOUCHCARET_TOUCHDRAG_ACTIVE:
|
||
|
case TOUCHCARET_TOUCHDRAG_INACTIVE:
|
||
|
// Consume mouse event in touch sequence.
|
||
|
status = nsEventStatus_eConsumeNoDefault;
|
||
|
break;
|
||
|
}
|
||
|
|
||
|
return status;
|
||
|
}
|
||
|
|
||
|
nsEventStatus
|
||
|
TouchCaret::HandleTouchDownEvent(WidgetTouchEvent* aEvent)
|
||
|
{
|
||
|
TOUCHCARET_LOG("Got a touch-start in state %d", mState);
|
||
|
|
||
|
nsEventStatus status = nsEventStatus_eIgnore;
|
||
|
|
||
|
switch (mState) {
|
||
|
case TOUCHCARET_NONE:
|
||
|
if (!GetVisibility()) {
|
||
|
// If touch caret is invisible, bypass event.
|
||
|
status = nsEventStatus_eIgnore;
|
||
|
} else {
|
||
|
// Loop over all the touches and see if any of them is on the touch
|
||
|
// caret.
|
||
|
for (size_t i = 0; i < aEvent->touches.Length(); ++i) {
|
||
|
int32_t touchId = aEvent->touches[i]->Identifier();
|
||
|
nsPoint point = GetEventPosition(aEvent, touchId);
|
||
|
if (IsOnTouchCaret(point)) {
|
||
|
SetSelectionDragState(true);
|
||
|
// Touch start position is contained in touch caret.
|
||
|
mActiveTouchId = touchId;
|
||
|
// Cache distance of the event point to the center of touch caret.
|
||
|
mCaretCenterToDownPointOffsetY = GetCaretYCenterPosition() - point.y;
|
||
|
// Enter TOUCHCARET_TOUCHDRAG_ACTIVE state and cancel the timer.
|
||
|
SetState(TOUCHCARET_TOUCHDRAG_ACTIVE);
|
||
|
CancelExpirationTimer();
|
||
|
status = nsEventStatus_eConsumeNoDefault;
|
||
|
break;
|
||
|
}
|
||
|
}
|
||
|
// No touch is on the touch caret. Set touch caret invisible, and bypass
|
||
|
// the event.
|
||
|
if (mActiveTouchId == -1) {
|
||
|
SetVisibility(false);
|
||
|
status = nsEventStatus_eIgnore;
|
||
|
}
|
||
|
}
|
||
|
break;
|
||
|
|
||
|
case TOUCHCARET_MOUSEDRAG_ACTIVE:
|
||
|
case TOUCHCARET_TOUCHDRAG_ACTIVE:
|
||
|
case TOUCHCARET_TOUCHDRAG_INACTIVE:
|
||
|
// Consume eTouchStart event.
|
||
|
status = nsEventStatus_eConsumeNoDefault;
|
||
|
break;
|
||
|
}
|
||
|
|
||
|
// Cache active touch IDs in TOUCHDRAG states.
|
||
|
if (mState == TOUCHCARET_TOUCHDRAG_ACTIVE ||
|
||
|
mState == TOUCHCARET_TOUCHDRAG_INACTIVE) {
|
||
|
mTouchesId.Clear();
|
||
|
for (size_t i = 0; i < aEvent->touches.Length(); i++) {
|
||
|
mTouchesId.AppendElement(aEvent->touches[i]->mIdentifier);
|
||
|
}
|
||
|
}
|
||
|
|
||
|
return status;
|
||
|
}
|
||
|
|
||
|
void
|
||
|
TouchCaret::DispatchTapEvent()
|
||
|
{
|
||
|
nsCOMPtr<nsIPresShell> presShell = do_QueryReferent(mPresShell);
|
||
|
if (!presShell) {
|
||
|
return;
|
||
|
}
|
||
|
|
||
|
RefPtr<nsCaret> caret = presShell->GetCaret();
|
||
|
if (!caret) {
|
||
|
return;
|
||
|
}
|
||
|
|
||
|
dom::Selection* sel = static_cast<dom::Selection*>(caret->GetSelection());
|
||
|
if (!sel) {
|
||
|
return;
|
||
|
}
|
||
|
|
||
|
nsIDocument* doc = presShell->GetDocument();
|
||
|
|
||
|
MOZ_ASSERT(doc);
|
||
|
|
||
|
dom::SelectionStateChangedEventInit init;
|
||
|
init.mBubbles = true;
|
||
|
|
||
|
// XXX: Do we need to flush layout?
|
||
|
presShell->FlushPendingNotifications(Flush_Layout);
|
||
|
nsRect rect = nsLayoutUtils::GetSelectionBoundingRect(sel);
|
||
|
RefPtr<dom::DOMRect>domRect = new dom::DOMRect(ToSupports(doc));
|
||
|
|
||
|
domRect->SetLayoutRect(rect);
|
||
|
init.mBoundingClientRect = domRect;
|
||
|
init.mVisible = false;
|
||
|
|
||
|
sel->Stringify(init.mSelectedText);
|
||
|
|
||
|
dom::Sequence<dom::SelectionState> state;
|
||
|
state.AppendElement(dom::SelectionState::Taponcaret, fallible);
|
||
|
init.mStates = state;
|
||
|
|
||
|
RefPtr<dom::SelectionStateChangedEvent> event =
|
||
|
dom::SelectionStateChangedEvent::Constructor(doc, NS_LITERAL_STRING("mozselectionstatechanged"), init);
|
||
|
|
||
|
event->SetTrusted(true);
|
||
|
event->GetInternalNSEvent()->mFlags.mOnlyChromeDispatch = true;
|
||
|
bool ret;
|
||
|
doc->DispatchEvent(event, &ret);
|
||
|
}
|
||
|
|
||
|
void
|
||
|
TouchCaret::SetState(TouchCaretState aState)
|
||
|
{
|
||
|
TOUCHCARET_LOG("state changed from %d to %d", mState, aState);
|
||
|
if (mState == TOUCHCARET_NONE) {
|
||
|
MOZ_ASSERT(aState != TOUCHCARET_TOUCHDRAG_INACTIVE,
|
||
|
"mState: NONE => TOUCHDRAG_INACTIVE isn't allowed!");
|
||
|
}
|
||
|
|
||
|
if (mState == TOUCHCARET_TOUCHDRAG_ACTIVE) {
|
||
|
MOZ_ASSERT(aState != TOUCHCARET_MOUSEDRAG_ACTIVE,
|
||
|
"mState: TOUCHDRAG_ACTIVE => MOUSEDRAG_ACTIVE isn't allowed!");
|
||
|
}
|
||
|
|
||
|
if (mState == TOUCHCARET_MOUSEDRAG_ACTIVE) {
|
||
|
MOZ_ASSERT(aState == TOUCHCARET_MOUSEDRAG_ACTIVE ||
|
||
|
aState == TOUCHCARET_NONE,
|
||
|
"MOUSEDRAG_ACTIVE allowed next state: NONE!");
|
||
|
}
|
||
|
|
||
|
if (mState == TOUCHCARET_TOUCHDRAG_INACTIVE) {
|
||
|
MOZ_ASSERT(aState == TOUCHCARET_TOUCHDRAG_INACTIVE ||
|
||
|
aState == TOUCHCARET_NONE,
|
||
|
"TOUCHDRAG_INACTIVE allowed next state: NONE!");
|
||
|
}
|
||
|
|
||
|
mState = aState;
|
||
|
|
||
|
if (mState == TOUCHCARET_NONE) {
|
||
|
mActiveTouchId = -1;
|
||
|
mCaretCenterToDownPointOffsetY = 0;
|
||
|
if (mIsValidTap) {
|
||
|
DispatchTapEvent();
|
||
|
mIsValidTap = false;
|
||
|
}
|
||
|
} else if (mState == TOUCHCARET_TOUCHDRAG_ACTIVE ||
|
||
|
mState == TOUCHCARET_MOUSEDRAG_ACTIVE) {
|
||
|
mIsValidTap = true;
|
||
|
}
|
||
|
}
|