d0b0908e62
Change-Id: I0222f0f53f387dd57bd674b1e137b53487f4e1d3 Reviewed-on: https://gerrit.libreoffice.org/c/core/+/159611 Tested-by: Jenkins Reviewed-by: Julien Nabet <serval2412@yahoo.fr>
483 lines
20 KiB
C++
483 lines
20 KiB
C++
/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
|
|
/*
|
|
* This file is part of the LibreOffice project.
|
|
*
|
|
* 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/.
|
|
*
|
|
* This file incorporates work covered by the following license notice:
|
|
*
|
|
* Licensed to the Apache Software Foundation (ASF) under one or more
|
|
* contributor license agreements. See the NOTICE file distributed
|
|
* with this work for additional information regarding copyright
|
|
* ownership. The ASF licenses this file to you under the Apache
|
|
* License, Version 2.0 (the "License"); you may not use this file
|
|
* except in compliance with the License. You may obtain a copy of
|
|
* the License at http://www.apache.org/licenses/LICENSE-2.0 .
|
|
*/
|
|
|
|
#include <sal/config.h>
|
|
|
|
#include <algorithm>
|
|
|
|
#include <basegfx/range/b2drectangle.hxx>
|
|
#include <basegfx/utils/canvastools.hxx>
|
|
#include <comphelper/diagnose_ex.hxx>
|
|
#include <sal/log.hxx>
|
|
|
|
#include <spriteredrawmanager.hxx>
|
|
#include <boost/range/adaptor/reversed.hpp>
|
|
#include <utility>
|
|
|
|
namespace canvas
|
|
{
|
|
namespace
|
|
{
|
|
/** Helper class to condense sprite updates into a single action
|
|
|
|
This class tracks the sprite changes over the recorded
|
|
change list, and generates a single update action from
|
|
that (note that per screen update, several moves,
|
|
visibility changes and content updates might happen)
|
|
*/
|
|
class SpriteTracer
|
|
{
|
|
public:
|
|
explicit SpriteTracer( Sprite::Reference rAffectedSprite ) :
|
|
mpAffectedSprite(std::move(rAffectedSprite)),
|
|
mbIsMove( false ),
|
|
mbIsGenericUpdate( false )
|
|
{
|
|
}
|
|
|
|
void operator()( const SpriteRedrawManager::SpriteChangeRecord& rSpriteRecord )
|
|
{
|
|
// only deal with change events from the currently
|
|
// affected sprite
|
|
if( rSpriteRecord.mpAffectedSprite != mpAffectedSprite )
|
|
return;
|
|
|
|
switch( rSpriteRecord.meChangeType )
|
|
{
|
|
case SpriteRedrawManager::SpriteChangeRecord::ChangeType::move:
|
|
if( !mbIsMove )
|
|
{
|
|
// no move yet - this must be the first one
|
|
maMoveStartArea = ::basegfx::B2DRectangle(
|
|
rSpriteRecord.maOldPos,
|
|
rSpriteRecord.maOldPos + rSpriteRecord.maUpdateArea.getRange() );
|
|
mbIsMove = true;
|
|
}
|
|
|
|
maMoveEndArea = rSpriteRecord.maUpdateArea;
|
|
break;
|
|
|
|
case SpriteRedrawManager::SpriteChangeRecord::ChangeType::update:
|
|
// update end update area of the
|
|
// sprite. Thus, every update() action
|
|
// _after_ the last move will correctly
|
|
// update the final repaint area. And this
|
|
// does not interfere with subsequent
|
|
// moves, because moves always perform a
|
|
// hard set of maMoveEndArea to their
|
|
// stored value
|
|
maMoveEndArea.expand( rSpriteRecord.maUpdateArea );
|
|
mbIsGenericUpdate = true;
|
|
break;
|
|
|
|
default:
|
|
ENSURE_OR_THROW( false,
|
|
"Unexpected case in SpriteUpdater::operator()" );
|
|
break;
|
|
}
|
|
}
|
|
|
|
void commit( SpriteRedrawManager::SpriteConnectedRanges& rUpdateCollector ) const
|
|
{
|
|
if( mbIsMove )
|
|
{
|
|
if( !maMoveStartArea.isEmpty() ||
|
|
!maMoveEndArea.isEmpty() )
|
|
{
|
|
// if mbIsGenericUpdate is false, this is a
|
|
// pure move (i.e. no other update
|
|
// operations). Pass that information on to
|
|
// the SpriteInfo
|
|
const bool bIsPureMove( !mbIsGenericUpdate );
|
|
|
|
// ignore the case that start and end update
|
|
// area overlap - the b2dconnectedranges
|
|
// handle that, anyway. doing it this way
|
|
// ensures that we have both old and new area
|
|
// stored
|
|
|
|
// round all given range up to enclosing
|
|
// integer rectangle - since the whole thing
|
|
// here is about
|
|
|
|
// first, draw the new sprite position
|
|
rUpdateCollector.addRange(
|
|
::basegfx::unotools::b2DSurroundingIntegerRangeFromB2DRange( maMoveEndArea ),
|
|
SpriteRedrawManager::SpriteInfo(
|
|
mpAffectedSprite,
|
|
maMoveEndArea,
|
|
true,
|
|
bIsPureMove ) );
|
|
|
|
// then, clear the old place (looks smoother
|
|
// this way)
|
|
rUpdateCollector.addRange(
|
|
::basegfx::unotools::b2DSurroundingIntegerRangeFromB2DRange( maMoveStartArea ),
|
|
SpriteRedrawManager::SpriteInfo(
|
|
Sprite::Reference(),
|
|
maMoveStartArea,
|
|
true,
|
|
bIsPureMove ) );
|
|
}
|
|
}
|
|
else if( mbIsGenericUpdate &&
|
|
!maMoveEndArea.isEmpty() )
|
|
{
|
|
rUpdateCollector.addRange(
|
|
::basegfx::unotools::b2DSurroundingIntegerRangeFromB2DRange( maMoveEndArea ),
|
|
SpriteRedrawManager::SpriteInfo(
|
|
mpAffectedSprite,
|
|
maMoveEndArea,
|
|
true ) );
|
|
}
|
|
}
|
|
|
|
private:
|
|
Sprite::Reference mpAffectedSprite;
|
|
::basegfx::B2DRectangle maMoveStartArea;
|
|
::basegfx::B2DRectangle maMoveEndArea;
|
|
|
|
/// True, if at least one move was encountered
|
|
bool mbIsMove;
|
|
|
|
/// True, if at least one generic update was encountered
|
|
bool mbIsGenericUpdate;
|
|
};
|
|
|
|
|
|
/** SpriteChecker functor, which for every sprite checks the
|
|
given update vector for necessary screen updates
|
|
*/
|
|
class SpriteUpdater
|
|
{
|
|
public:
|
|
/** Generate update area list
|
|
|
|
@param rUpdater
|
|
Reference to an updater object, which will receive the
|
|
update areas.
|
|
|
|
@param rChangeContainer
|
|
Container with all sprite change requests
|
|
|
|
*/
|
|
SpriteUpdater( SpriteRedrawManager::SpriteConnectedRanges& rUpdater,
|
|
const SpriteRedrawManager::VectorOfChangeRecords& rChangeContainer ) :
|
|
mrUpdater( rUpdater ),
|
|
mrChangeContainer( rChangeContainer )
|
|
{
|
|
}
|
|
|
|
/** Call this method for every sprite on your screen
|
|
|
|
This method scans the change container, collecting all
|
|
update info for the given sprite into one or two
|
|
update operations, which in turn are inserted into the
|
|
connected ranges processor.
|
|
|
|
@param rSprite
|
|
Current sprite to collect update info for.
|
|
*/
|
|
void operator()( const Sprite::Reference& rSprite )
|
|
{
|
|
SpriteTracer aSpriteTracer( rSprite );
|
|
|
|
for (auto const& aChange : mrChangeContainer)
|
|
aSpriteTracer( aChange );
|
|
|
|
aSpriteTracer.commit( mrUpdater );
|
|
}
|
|
|
|
private:
|
|
SpriteRedrawManager::SpriteConnectedRanges& mrUpdater;
|
|
const SpriteRedrawManager::VectorOfChangeRecords& mrChangeContainer;
|
|
};
|
|
}
|
|
|
|
void SpriteRedrawManager::setupUpdateAreas( SpriteConnectedRanges& rUpdateAreas ) const
|
|
{
|
|
// TODO(T3): This is NOT thread safe at all. This only works
|
|
// under the assumption that NOBODY changes ANYTHING
|
|
// concurrently, while this method is on the stack. We should
|
|
// really rework the canvas::Sprite interface, in such a way
|
|
// that it dumps ALL its state with a single, atomic
|
|
// call. Then, we store that state locally. This prolly goes
|
|
// in line with the problem of having sprite state available
|
|
// for the frame before the last frame; plus, it avoids
|
|
// frequent locks of the object mutexes
|
|
SpriteWeakOrder aSpriteComparator;
|
|
|
|
// put all sprites that have changed content into update areas
|
|
for( const auto& pSprite : maSprites )
|
|
{
|
|
if( pSprite->isContentChanged() )
|
|
const_cast< SpriteRedrawManager* >( this )->updateSprite( pSprite,
|
|
pSprite->getPosPixel(),
|
|
pSprite->getUpdateArea() );
|
|
}
|
|
|
|
// sort sprites after prio
|
|
VectorOfSprites aSortedSpriteVector( maSprites.begin(), maSprites.end() );
|
|
std::sort( aSortedSpriteVector.begin(),
|
|
aSortedSpriteVector.end(),
|
|
aSpriteComparator );
|
|
|
|
// extract all referenced sprites from the maChangeRecords
|
|
// (copy sprites, make the list unique, regarding the
|
|
// sprite pointer). This assumes that, until this scope
|
|
// ends, nobody changes the maChangeRecords vector!
|
|
VectorOfSprites aUpdatableSprites;
|
|
for( const auto& rChangeRecord : maChangeRecords )
|
|
{
|
|
const Sprite::Reference& rSprite( rChangeRecord.getSprite() );
|
|
if( rSprite.is() )
|
|
aUpdatableSprites.push_back( rSprite );
|
|
}
|
|
|
|
std::sort( aUpdatableSprites.begin(),
|
|
aUpdatableSprites.end(),
|
|
aSpriteComparator );
|
|
|
|
VectorOfSprites::iterator aEnd=
|
|
std::unique( aUpdatableSprites.begin(),
|
|
aUpdatableSprites.end() );
|
|
|
|
// for each unique sprite, check the change event vector,
|
|
// calculate the update operation from that, and add the
|
|
// result to the aUpdateArea.
|
|
std::for_each( aUpdatableSprites.begin(),
|
|
aEnd,
|
|
SpriteUpdater( rUpdateAreas,
|
|
maChangeRecords) );
|
|
|
|
// TODO(P2): Implement your own output iterator adapter, to
|
|
// avoid that totally superfluous temp aUnchangedSprites
|
|
// vector.
|
|
|
|
// add all sprites to rUpdateAreas, that are _not_ already
|
|
// contained in the uniquified vector of changed ones
|
|
// (i.e. the difference between aSortedSpriteVector and
|
|
// aUpdatableSprites).
|
|
VectorOfSprites aUnchangedSprites;
|
|
std::set_difference( aSortedSpriteVector.begin(),
|
|
aSortedSpriteVector.end(),
|
|
aUpdatableSprites.begin(),
|
|
aEnd,
|
|
std::back_insert_iterator< VectorOfSprites >(aUnchangedSprites),
|
|
aSpriteComparator );
|
|
|
|
// add each remaining unchanged sprite to connected ranges,
|
|
// marked as "don't need update"
|
|
for( const auto& pUnchangedSprite : aUnchangedSprites )
|
|
{
|
|
const ::basegfx::B2DRange& rUpdateArea( pUnchangedSprite->getUpdateArea() );
|
|
rUpdateAreas.addRange(
|
|
::basegfx::unotools::b2DSurroundingIntegerRangeFromB2DRange( rUpdateArea ),
|
|
SpriteInfo( pUnchangedSprite,
|
|
rUpdateArea,
|
|
false ) );
|
|
}
|
|
}
|
|
|
|
#if OSL_DEBUG_LEVEL > 0
|
|
static bool impIsEqualB2DRange(const basegfx::B2DRange& rRangeA, const basegfx::B2DRange& rRangeB, double fSmallValue)
|
|
{
|
|
return fabs(rRangeB.getMinX() - rRangeA.getMinX()) <= fSmallValue
|
|
&& fabs(rRangeB.getMinY() - rRangeA.getMinY()) <= fSmallValue
|
|
&& fabs(rRangeB.getMaxX() - rRangeA.getMaxX()) <= fSmallValue
|
|
&& fabs(rRangeB.getMaxY() - rRangeA.getMaxY()) <= fSmallValue;
|
|
}
|
|
|
|
static bool impIsEqualB2DVector(const basegfx::B2DVector& rVecA, const basegfx::B2DVector& rVecB, double fSmallValue)
|
|
{
|
|
return fabs(rVecB.getX() - rVecA.getX()) <= fSmallValue
|
|
&& fabs(rVecB.getY() - rVecA.getY()) <= fSmallValue;
|
|
}
|
|
#endif
|
|
|
|
bool SpriteRedrawManager::isAreaUpdateScroll( ::basegfx::B2DRectangle& o_rMoveStart,
|
|
::basegfx::B2DRectangle& o_rMoveEnd,
|
|
const UpdateArea& rUpdateArea,
|
|
std::size_t nNumSprites ) const
|
|
{
|
|
// check for a solitary move, which consists of exactly two
|
|
// pure-move entries, the first with valid, the second with
|
|
// invalid sprite (see SpriteTracer::commit()). Note that we
|
|
// cannot simply store some flag in SpriteTracer::commit()
|
|
// above and just check that here, since during the connected
|
|
// range calculations, other sprites might get merged into the
|
|
// same region (thus spoiling the scrolling move
|
|
// optimization).
|
|
if( nNumSprites != 2 )
|
|
return false;
|
|
|
|
const SpriteConnectedRanges::ComponentListType::const_iterator aFirst(
|
|
rUpdateArea.maComponentList.begin() );
|
|
SpriteConnectedRanges::ComponentListType::const_iterator aSecond(
|
|
aFirst );
|
|
++aSecond;
|
|
|
|
if( !aFirst->second.isPureMove() ||
|
|
!aSecond->second.isPureMove() ||
|
|
!aFirst->second.getSprite().is() ||
|
|
// use _true_ update area, not the rounded version
|
|
!aFirst->second.getSprite()->isAreaUpdateOpaque( aFirst->second.getUpdateArea() ) ||
|
|
aSecond->second.getSprite().is() )
|
|
{
|
|
// either no move update, or incorrect sprite, or sprite
|
|
// content not fully opaque over update region.
|
|
return false;
|
|
}
|
|
|
|
o_rMoveStart = aSecond->second.getUpdateArea();
|
|
o_rMoveEnd = aFirst->second.getUpdateArea();
|
|
|
|
#if OSL_DEBUG_LEVEL > 0
|
|
::basegfx::B2DRectangle aTotalBounds( o_rMoveStart );
|
|
aTotalBounds.expand( o_rMoveEnd );
|
|
|
|
SAL_WARN_IF(!impIsEqualB2DRange(rUpdateArea.maTotalBounds, basegfx::unotools::b2DSurroundingIntegerRangeFromB2DRange(aTotalBounds), 0.5),
|
|
"canvas",
|
|
"SpriteRedrawManager::isAreaUpdateScroll(): sprite area and total area mismatch");
|
|
SAL_WARN_IF(!impIsEqualB2DVector(o_rMoveStart.getRange(), o_rMoveEnd.getRange(), 0.5),
|
|
"canvas",
|
|
"SpriteRedrawManager::isAreaUpdateScroll(): scroll start and end area have mismatching size");
|
|
#endif
|
|
|
|
return true;
|
|
}
|
|
|
|
bool SpriteRedrawManager::isAreaUpdateNotOpaque( const ::basegfx::B2DRectangle& rUpdateRect,
|
|
const AreaComponent& rComponent ) const
|
|
{
|
|
const Sprite::Reference& pAffectedSprite( rComponent.second.getSprite() );
|
|
|
|
if( !pAffectedSprite.is() )
|
|
return true; // no sprite, no opaque update!
|
|
|
|
return !pAffectedSprite->isAreaUpdateOpaque( rUpdateRect );
|
|
}
|
|
|
|
bool SpriteRedrawManager::isAreaUpdateOpaque( const UpdateArea& rUpdateArea,
|
|
std::size_t nNumSprites ) const
|
|
{
|
|
// check whether the sprites in the update area's list will
|
|
// fully cover the given area _and_ do that in an opaque way
|
|
// (i.e. no alpha, no non-rectangular sprite content).
|
|
|
|
// TODO(P1): Come up with a smarter early-exit criterion here
|
|
// (though, I think, the case that _lots_ of sprites _fully_
|
|
// cover a rectangular area _without_ any holes is extremely
|
|
// improbable)
|
|
|
|
// avoid checking large number of sprites (and probably fail,
|
|
// anyway). Note: the case nNumSprites < 1 should normally not
|
|
// happen, as handleArea() calls backgroundPaint() then.
|
|
if( nNumSprites > 3 || nNumSprites < 1 )
|
|
return false;
|
|
|
|
// now, calc the _true_ update area, by merging all sprite's
|
|
// true update areas into one rectangle
|
|
::basegfx::B2DRange aTrueArea( rUpdateArea.maComponentList.begin()->second.getUpdateArea() );
|
|
for( const auto& rArea : rUpdateArea.maComponentList )
|
|
aTrueArea.expand(rArea.second.getUpdateArea());
|
|
|
|
const SpriteConnectedRanges::ComponentListType::const_iterator aEnd(
|
|
rUpdateArea.maComponentList.end() );
|
|
|
|
// and check whether _any_ of the sprites tells that its area
|
|
// update will not be opaque.
|
|
return std::none_of( rUpdateArea.maComponentList.begin(),
|
|
aEnd,
|
|
[&aTrueArea, this]( const std::pair< ::basegfx::B2DRange, SpriteInfo >& cp )
|
|
{ return this->isAreaUpdateNotOpaque(aTrueArea, cp); } );
|
|
}
|
|
|
|
bool SpriteRedrawManager::areSpritesChanged( const UpdateArea& rUpdateArea ) const
|
|
{
|
|
// check whether SpriteInfo::needsUpdate returns false for
|
|
// all elements of this area's contained sprites
|
|
|
|
// if not a single changed sprite found - just ignore this
|
|
// component (return false)
|
|
const SpriteConnectedRanges::ComponentListType::const_iterator aEnd(
|
|
rUpdateArea.maComponentList.end() );
|
|
return std::any_of( rUpdateArea.maComponentList.begin(),
|
|
aEnd,
|
|
[]( const std::pair< ::basegfx::B2DRange, SpriteInfo >& cp )
|
|
{ return cp.second.needsUpdate(); } );
|
|
}
|
|
|
|
SpriteRedrawManager::SpriteRedrawManager()
|
|
{
|
|
}
|
|
|
|
void SpriteRedrawManager::disposing()
|
|
{
|
|
// drop all references
|
|
maChangeRecords.clear();
|
|
|
|
// dispose all sprites - the spritecanvas, and by delegation,
|
|
// this object, is the owner of the sprites. After all, a
|
|
// sprite without a canvas to render into makes not terribly
|
|
// much sense.
|
|
for( const auto& rCurr : boost::adaptors::reverse(maSprites) )
|
|
rCurr->dispose();
|
|
|
|
maSprites.clear();
|
|
}
|
|
|
|
void SpriteRedrawManager::clearChangeRecords()
|
|
{
|
|
maChangeRecords.clear();
|
|
}
|
|
|
|
void SpriteRedrawManager::showSprite( const Sprite::Reference& rSprite )
|
|
{
|
|
maSprites.push_back( rSprite );
|
|
}
|
|
|
|
void SpriteRedrawManager::hideSprite( const Sprite::Reference& rSprite )
|
|
{
|
|
std::erase(maSprites, rSprite);
|
|
}
|
|
|
|
void SpriteRedrawManager::moveSprite( const Sprite::Reference& rSprite,
|
|
const ::basegfx::B2DPoint& rOldPos,
|
|
const ::basegfx::B2DPoint& rNewPos,
|
|
const ::basegfx::B2DVector& rSpriteSize )
|
|
{
|
|
maChangeRecords.emplace_back( rSprite,
|
|
rOldPos,
|
|
rNewPos,
|
|
rSpriteSize );
|
|
}
|
|
|
|
void SpriteRedrawManager::updateSprite( const Sprite::Reference& rSprite,
|
|
const ::basegfx::B2DPoint& rPos,
|
|
const ::basegfx::B2DRange& rUpdateArea )
|
|
{
|
|
maChangeRecords.emplace_back( rSprite,
|
|
rPos,
|
|
rUpdateArea );
|
|
}
|
|
|
|
}
|
|
|
|
/* vim:set shiftwidth=4 softtabstop=4 expandtab: */
|