mirror of
https://gitlab.winehq.org/wine/wine-gecko.git
synced 2024-09-13 09:24:08 -07:00
298 lines
9.3 KiB
C++
298 lines
9.3 KiB
C++
/* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
|
|
/* vim: set ts=8 sts=2 et sw=2 tw=80: */
|
|
/* This Source Code Form is subject to the terms of the Mozilla Public
|
|
* License, v. 2.0. If a copy of the MPL was not distributed with this
|
|
* file, You can obtain one at http://mozilla.org/MPL/2.0/. */
|
|
|
|
#ifndef NS_SMILTIMECONTAINER_H_
|
|
#define NS_SMILTIMECONTAINER_H_
|
|
|
|
#include "mozilla/dom/SVGAnimationElement.h"
|
|
#include "nscore.h"
|
|
#include "nsSMILTypes.h"
|
|
#include "nsTPriorityQueue.h"
|
|
#include "nsAutoPtr.h"
|
|
#include "nsSMILMilestone.h"
|
|
|
|
class nsSMILTimeValue;
|
|
|
|
//----------------------------------------------------------------------
|
|
// nsSMILTimeContainer
|
|
//
|
|
// Common base class for a time base that can be paused, resumed, and sampled.
|
|
//
|
|
class nsSMILTimeContainer
|
|
{
|
|
public:
|
|
nsSMILTimeContainer();
|
|
virtual ~nsSMILTimeContainer();
|
|
|
|
/*
|
|
* Pause request types.
|
|
*/
|
|
enum {
|
|
PAUSE_BEGIN = 1, // Paused because timeline has yet to begin.
|
|
PAUSE_SCRIPT = 2, // Paused by script.
|
|
PAUSE_PAGEHIDE = 4, // Paused because our doc is hidden.
|
|
PAUSE_USERPREF = 8, // Paused because animations are disabled in prefs.
|
|
PAUSE_IMAGE = 16 // Paused becuase we're in an image that's suspended.
|
|
};
|
|
|
|
/*
|
|
* Cause the time container to record its begin time.
|
|
*/
|
|
void Begin();
|
|
|
|
/*
|
|
* Pause this time container
|
|
*
|
|
* @param aType The source of the pause request. Successive calls to Pause
|
|
* with the same aType will be ignored. The container will remain paused until
|
|
* each call to Pause of a given aType has been matched by at least one call
|
|
* to Resume with the same aType.
|
|
*/
|
|
virtual void Pause(uint32_t aType);
|
|
|
|
/*
|
|
* Resume this time container
|
|
*
|
|
* param @aType The source of the resume request. Clears the pause flag for
|
|
* this particular type of pause request. When all pause flags have been
|
|
* cleared the time container will be resumed.
|
|
*/
|
|
virtual void Resume(uint32_t aType);
|
|
|
|
/**
|
|
* Returns true if this time container is paused by the specified type.
|
|
* Note that the time container may also be paused by other types; this method
|
|
* does not test if aType is the exclusive pause source.
|
|
*
|
|
* @param @aType The pause source to test for.
|
|
* @return true if this container is paused by aType.
|
|
*/
|
|
bool IsPausedByType(uint32_t aType) const { return mPauseState & aType; }
|
|
|
|
/**
|
|
* Returns true if this time container is paused.
|
|
* Generally you should test for a specific type of pausing using
|
|
* IsPausedByType.
|
|
*
|
|
* @return true if this container is paused, false otherwise.
|
|
*/
|
|
bool IsPaused() const { return mPauseState != 0; }
|
|
|
|
/*
|
|
* Return the time elapsed since this time container's begin time (expressed
|
|
* in parent time) minus any accumulated offset from pausing.
|
|
*/
|
|
nsSMILTime GetCurrentTime() const;
|
|
|
|
/*
|
|
* Seek the document timeline to the specified time.
|
|
*
|
|
* @param aSeekTo The time to seek to, expressed in this time container's time
|
|
* base (i.e. the same units as GetCurrentTime).
|
|
*/
|
|
void SetCurrentTime(nsSMILTime aSeekTo);
|
|
|
|
/*
|
|
* Return the current time for the parent time container if any.
|
|
*/
|
|
virtual nsSMILTime GetParentTime() const;
|
|
|
|
/*
|
|
* Convert container time to parent time.
|
|
*
|
|
* @param aContainerTime The container time to convert.
|
|
* @return The equivalent parent time or indefinite if the container is
|
|
* paused and the time is in the future.
|
|
*/
|
|
nsSMILTimeValue ContainerToParentTime(nsSMILTime aContainerTime) const;
|
|
|
|
/*
|
|
* Convert from parent time to container time.
|
|
*
|
|
* @param aParentTime The parent time to convert.
|
|
* @return The equivalent container time or indefinite if the container is
|
|
* paused and aParentTime is after the time when the pause began.
|
|
*/
|
|
nsSMILTimeValue ParentToContainerTime(nsSMILTime aParentTime) const;
|
|
|
|
/*
|
|
* If the container is paused, causes the pause time to be updated to the
|
|
* current parent time. This should be called before updating
|
|
* cross-container dependencies that will call ContainerToParentTime in order
|
|
* to provide more intuitive results.
|
|
*/
|
|
void SyncPauseTime();
|
|
|
|
/*
|
|
* Updates the current time of this time container and calls DoSample to
|
|
* perform any sample-operations.
|
|
*/
|
|
void Sample();
|
|
|
|
/*
|
|
* Return if this time container should be sampled or can be skipped.
|
|
*
|
|
* This is most useful as an optimisation for skipping time containers that
|
|
* don't require a sample.
|
|
*/
|
|
bool NeedsSample() const { return !mPauseState || mNeedsPauseSample; }
|
|
|
|
/*
|
|
* Indicates if the elements of this time container need to be rewound.
|
|
* This occurs during a backwards seek.
|
|
*/
|
|
bool NeedsRewind() const { return mNeedsRewind; }
|
|
void ClearNeedsRewind() { mNeedsRewind = false; }
|
|
|
|
/*
|
|
* Indicates the time container is currently processing a SetCurrentTime
|
|
* request and appropriate seek behaviour should be applied by child elements
|
|
* (e.g. not firing time events).
|
|
*/
|
|
bool IsSeeking() const { return mIsSeeking; }
|
|
void MarkSeekFinished() { mIsSeeking = false; }
|
|
|
|
/*
|
|
* Sets the parent time container.
|
|
*
|
|
* The callee still retains ownership of the time container.
|
|
*/
|
|
nsresult SetParent(nsSMILTimeContainer* aParent);
|
|
|
|
/*
|
|
* Registers an element for a sample at the given time.
|
|
*
|
|
* @param aMilestone The milestone to register in container time.
|
|
* @param aElement The timebase element that needs a sample at
|
|
* aMilestone.
|
|
* @return true if the element was successfully added, false otherwise.
|
|
*/
|
|
bool AddMilestone(const nsSMILMilestone& aMilestone,
|
|
mozilla::dom::SVGAnimationElement& aElement);
|
|
|
|
/*
|
|
* Resets the list of milestones.
|
|
*/
|
|
void ClearMilestones();
|
|
|
|
/*
|
|
* Returns the next significant transition from amongst the registered
|
|
* milestones.
|
|
*
|
|
* @param[out] aNextMilestone The next milestone with time in parent time.
|
|
*
|
|
* @return true if there exists another milestone, false otherwise in
|
|
* which case aNextMilestone will be unmodified.
|
|
*/
|
|
bool GetNextMilestoneInParentTime(nsSMILMilestone& aNextMilestone) const;
|
|
|
|
typedef nsTArray<nsRefPtr<mozilla::dom::SVGAnimationElement> > AnimElemArray;
|
|
|
|
/*
|
|
* Removes and returns the timebase elements from the start of the list of
|
|
* timebase elements that match the given time.
|
|
*
|
|
* @param aMilestone The milestone time to match in parent time. This
|
|
* must be <= GetNextMilestoneInParentTime.
|
|
* @param[out] aMatchedElements The array to which matching elements will be
|
|
* appended.
|
|
* @return true if one or more elements match, false otherwise.
|
|
*/
|
|
bool PopMilestoneElementsAtMilestone(const nsSMILMilestone& aMilestone,
|
|
AnimElemArray& aMatchedElements);
|
|
|
|
// Cycle-collection support
|
|
void Traverse(nsCycleCollectionTraversalCallback* aCallback);
|
|
void Unlink();
|
|
|
|
protected:
|
|
/*
|
|
* Per-sample operations to be performed whenever Sample() is called and
|
|
* NeedsSample() is true. Called after updating mCurrentTime;
|
|
*/
|
|
virtual void DoSample() { }
|
|
|
|
/*
|
|
* Adding and removing child containers is not implemented in the base class
|
|
* because not all subclasses need this.
|
|
*/
|
|
|
|
/*
|
|
* Adds a child time container.
|
|
*/
|
|
virtual nsresult AddChild(nsSMILTimeContainer& aChild)
|
|
{
|
|
return NS_ERROR_FAILURE;
|
|
}
|
|
|
|
/*
|
|
* Removes a child time container.
|
|
*/
|
|
virtual void RemoveChild(nsSMILTimeContainer& aChild) { }
|
|
|
|
/*
|
|
* Implementation helper to update the current time.
|
|
*/
|
|
void UpdateCurrentTime();
|
|
|
|
/*
|
|
* Implementation helper to notify timed elements with dependencies that the
|
|
* container time has changed with respect to the document time.
|
|
*/
|
|
void NotifyTimeChange();
|
|
|
|
// The parent time container, if any
|
|
nsSMILTimeContainer* mParent;
|
|
|
|
// The current time established at the last call to Sample()
|
|
nsSMILTime mCurrentTime;
|
|
|
|
// The number of milliseconds for which the container has been paused
|
|
// (excluding the current pause interval if the container is currently
|
|
// paused).
|
|
//
|
|
// Current time = parent time - mParentOffset
|
|
//
|
|
nsSMILTime mParentOffset;
|
|
|
|
// The timestamp in parent time when the container was paused
|
|
nsSMILTime mPauseStart;
|
|
|
|
// Whether or not a pause sample is required
|
|
bool mNeedsPauseSample;
|
|
|
|
bool mNeedsRewind; // Backwards seek performed
|
|
bool mIsSeeking; // Currently in the middle of a seek operation
|
|
|
|
// A bitfield of the pause state for all pause requests
|
|
uint32_t mPauseState;
|
|
|
|
struct MilestoneEntry
|
|
{
|
|
MilestoneEntry(nsSMILMilestone aMilestone,
|
|
mozilla::dom::SVGAnimationElement& aElement)
|
|
: mMilestone(aMilestone), mTimebase(&aElement)
|
|
{ }
|
|
|
|
bool operator<(const MilestoneEntry& aOther) const
|
|
{
|
|
return mMilestone < aOther.mMilestone;
|
|
}
|
|
|
|
nsSMILMilestone mMilestone; // In container time.
|
|
nsRefPtr<mozilla::dom::SVGAnimationElement> mTimebase;
|
|
};
|
|
|
|
// Queue of elements with registered milestones. Used to update the model with
|
|
// significant transitions that occur between two samples. Since timed element
|
|
// re-register their milestones when they're sampled this is reset once we've
|
|
// taken care of the milestones before the current sample time but before we
|
|
// actually do the full sample.
|
|
nsTPriorityQueue<MilestoneEntry> mMilestoneEntries;
|
|
};
|
|
|
|
#endif // NS_SMILTIMECONTAINER_H_
|