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See the 18*cdf0e10cSrcweir * GNU Lesser General Public License version 3 for more details 19*cdf0e10cSrcweir * (a copy is included in the LICENSE file that accompanied this code). 20*cdf0e10cSrcweir * 21*cdf0e10cSrcweir * You should have received a copy of the GNU Lesser General Public License 22*cdf0e10cSrcweir * version 3 along with OpenOffice.org. If not, see 23*cdf0e10cSrcweir * <http://www.openoffice.org/license.html> 24*cdf0e10cSrcweir * for a copy of the LGPLv3 License. 25*cdf0e10cSrcweir * 26*cdf0e10cSrcweir ************************************************************************/ 27*cdf0e10cSrcweir 28*cdf0e10cSrcweir // MARKER(update_precomp.py): autogen include statement, do not remove 29*cdf0e10cSrcweir #include "precompiled_slideshow.hxx" 30*cdf0e10cSrcweir 31*cdf0e10cSrcweir // must be first 32*cdf0e10cSrcweir #include <canvas/debug.hxx> 33*cdf0e10cSrcweir #include <tools/diagnose_ex.h> 34*cdf0e10cSrcweir #include <canvas/verbosetrace.hxx> 35*cdf0e10cSrcweir #include <canvas/canvastools.hxx> 36*cdf0e10cSrcweir 37*cdf0e10cSrcweir #include <activitybase.hxx> 38*cdf0e10cSrcweir 39*cdf0e10cSrcweir 40*cdf0e10cSrcweir namespace slideshow 41*cdf0e10cSrcweir { 42*cdf0e10cSrcweir namespace internal 43*cdf0e10cSrcweir { 44*cdf0e10cSrcweir // TODO(P1): Elide some virtual function calls, by templifying this 45*cdf0e10cSrcweir // static hierarchy 46*cdf0e10cSrcweir 47*cdf0e10cSrcweir ActivityBase::ActivityBase( const ActivityParameters& rParms ) : 48*cdf0e10cSrcweir mpEndEvent( rParms.mrEndEvent ), 49*cdf0e10cSrcweir mrEventQueue( rParms.mrEventQueue ), 50*cdf0e10cSrcweir mpShape(), 51*cdf0e10cSrcweir mpAttributeLayer(), 52*cdf0e10cSrcweir maRepeats( rParms.mrRepeats ), 53*cdf0e10cSrcweir mnAccelerationFraction( rParms.mnAccelerationFraction ), 54*cdf0e10cSrcweir mnDecelerationFraction( rParms.mnDecelerationFraction ), 55*cdf0e10cSrcweir mbAutoReverse( rParms.mbAutoReverse ), 56*cdf0e10cSrcweir mbFirstPerformCall( true ), 57*cdf0e10cSrcweir mbIsActive( true ) {} 58*cdf0e10cSrcweir 59*cdf0e10cSrcweir void ActivityBase::dispose() 60*cdf0e10cSrcweir { 61*cdf0e10cSrcweir // deactivate 62*cdf0e10cSrcweir mbIsActive = false; 63*cdf0e10cSrcweir 64*cdf0e10cSrcweir // dispose event 65*cdf0e10cSrcweir if( mpEndEvent ) 66*cdf0e10cSrcweir mpEndEvent->dispose(); 67*cdf0e10cSrcweir 68*cdf0e10cSrcweir // release references 69*cdf0e10cSrcweir mpEndEvent.reset(); 70*cdf0e10cSrcweir mpShape.reset(); 71*cdf0e10cSrcweir mpAttributeLayer.reset(); 72*cdf0e10cSrcweir } 73*cdf0e10cSrcweir 74*cdf0e10cSrcweir double ActivityBase::calcTimeLag() const 75*cdf0e10cSrcweir { 76*cdf0e10cSrcweir // TODO(Q1): implement different init process! 77*cdf0e10cSrcweir if (isActive() && mbFirstPerformCall) 78*cdf0e10cSrcweir { 79*cdf0e10cSrcweir mbFirstPerformCall = false; 80*cdf0e10cSrcweir 81*cdf0e10cSrcweir // notify derived classes that we're 82*cdf0e10cSrcweir // starting now 83*cdf0e10cSrcweir const_cast<ActivityBase *>(this)->startAnimation(); 84*cdf0e10cSrcweir } 85*cdf0e10cSrcweir return 0.0; 86*cdf0e10cSrcweir } 87*cdf0e10cSrcweir 88*cdf0e10cSrcweir bool ActivityBase::perform() 89*cdf0e10cSrcweir { 90*cdf0e10cSrcweir // still active? 91*cdf0e10cSrcweir if( !isActive() ) 92*cdf0e10cSrcweir return false; // no, early exit. 93*cdf0e10cSrcweir 94*cdf0e10cSrcweir OSL_ASSERT( ! mbFirstPerformCall ); 95*cdf0e10cSrcweir 96*cdf0e10cSrcweir return true; 97*cdf0e10cSrcweir } 98*cdf0e10cSrcweir 99*cdf0e10cSrcweir bool ActivityBase::isActive() const 100*cdf0e10cSrcweir { 101*cdf0e10cSrcweir return mbIsActive; 102*cdf0e10cSrcweir } 103*cdf0e10cSrcweir 104*cdf0e10cSrcweir void ActivityBase::setTargets( const AnimatableShapeSharedPtr& rShape, 105*cdf0e10cSrcweir const ShapeAttributeLayerSharedPtr& rAttrLayer ) 106*cdf0e10cSrcweir { 107*cdf0e10cSrcweir ENSURE_OR_THROW( rShape, 108*cdf0e10cSrcweir "ActivityBase::setTargets(): Invalid shape" ); 109*cdf0e10cSrcweir ENSURE_OR_THROW( rAttrLayer, 110*cdf0e10cSrcweir "ActivityBase::setTargets(): Invalid attribute layer" ); 111*cdf0e10cSrcweir 112*cdf0e10cSrcweir mpShape = rShape; 113*cdf0e10cSrcweir mpAttributeLayer = rAttrLayer; 114*cdf0e10cSrcweir } 115*cdf0e10cSrcweir 116*cdf0e10cSrcweir void ActivityBase::endActivity() 117*cdf0e10cSrcweir { 118*cdf0e10cSrcweir // this is a regular activity end 119*cdf0e10cSrcweir mbIsActive = false; 120*cdf0e10cSrcweir 121*cdf0e10cSrcweir // Activity is ending, queue event, then 122*cdf0e10cSrcweir if( mpEndEvent ) 123*cdf0e10cSrcweir mrEventQueue.addEvent( mpEndEvent ); 124*cdf0e10cSrcweir 125*cdf0e10cSrcweir // release references 126*cdf0e10cSrcweir mpEndEvent.reset(); 127*cdf0e10cSrcweir } 128*cdf0e10cSrcweir 129*cdf0e10cSrcweir void ActivityBase::dequeued() 130*cdf0e10cSrcweir { 131*cdf0e10cSrcweir // xxx todo: 132*cdf0e10cSrcweir // // ignored here, if we're still active. Discrete 133*cdf0e10cSrcweir // // activities are dequeued after every perform() call, 134*cdf0e10cSrcweir // // thus, the call is only significant when isActive() == 135*cdf0e10cSrcweir // // false. 136*cdf0e10cSrcweir if( !isActive() ) 137*cdf0e10cSrcweir endAnimation(); 138*cdf0e10cSrcweir } 139*cdf0e10cSrcweir 140*cdf0e10cSrcweir void ActivityBase::end() 141*cdf0e10cSrcweir { 142*cdf0e10cSrcweir if (!isActive() || isDisposed()) 143*cdf0e10cSrcweir return; 144*cdf0e10cSrcweir // assure animation is started: 145*cdf0e10cSrcweir if (mbFirstPerformCall) { 146*cdf0e10cSrcweir mbFirstPerformCall = false; 147*cdf0e10cSrcweir // notify derived classes that we're starting now 148*cdf0e10cSrcweir this->startAnimation(); 149*cdf0e10cSrcweir } 150*cdf0e10cSrcweir 151*cdf0e10cSrcweir performEnd(); // calling private virtual 152*cdf0e10cSrcweir endAnimation(); 153*cdf0e10cSrcweir endActivity(); 154*cdf0e10cSrcweir } 155*cdf0e10cSrcweir 156*cdf0e10cSrcweir double ActivityBase::calcAcceleratedTime( double nT ) const 157*cdf0e10cSrcweir { 158*cdf0e10cSrcweir // Handle acceleration/deceleration 159*cdf0e10cSrcweir // ================================ 160*cdf0e10cSrcweir 161*cdf0e10cSrcweir // clamp nT to permissible [0,1] range 162*cdf0e10cSrcweir nT = ::basegfx::clamp( nT, 0.0, 1.0 ); 163*cdf0e10cSrcweir 164*cdf0e10cSrcweir // take acceleration/deceleration into account. if the sum 165*cdf0e10cSrcweir // of mnAccelerationFraction and mnDecelerationFraction 166*cdf0e10cSrcweir // exceeds 1.0, ignore both (that's according to SMIL spec) 167*cdf0e10cSrcweir if( (mnAccelerationFraction > 0.0 || 168*cdf0e10cSrcweir mnDecelerationFraction > 0.0) && 169*cdf0e10cSrcweir mnAccelerationFraction + mnDecelerationFraction <= 1.0 ) 170*cdf0e10cSrcweir { 171*cdf0e10cSrcweir /* 172*cdf0e10cSrcweir // calc accelerated/decelerated time. 173*cdf0e10cSrcweir // 174*cdf0e10cSrcweir // We have three intervals: 175*cdf0e10cSrcweir // 1 [0,a] 176*cdf0e10cSrcweir // 2 [a,d] 177*cdf0e10cSrcweir // 3 [d,1] (with a and d being acceleration/deceleration 178*cdf0e10cSrcweir // fraction, resp.) 179*cdf0e10cSrcweir // 180*cdf0e10cSrcweir // The change rate during interval 1 is constantly 181*cdf0e10cSrcweir // increasing, reaching 1 at a. It then stays at 1, 182*cdf0e10cSrcweir // starting a linear decrease at d, ending with 0 at 183*cdf0e10cSrcweir // time 1. The integral of this function is the 184*cdf0e10cSrcweir // required new time nT'. 185*cdf0e10cSrcweir // 186*cdf0e10cSrcweir // As we arbitrarily assumed 1 as the upper value of 187*cdf0e10cSrcweir // the change rate, the integral must be normalized to 188*cdf0e10cSrcweir // reach nT'=1 at the end of the interval. This 189*cdf0e10cSrcweir // normalization constant is: 190*cdf0e10cSrcweir // 191*cdf0e10cSrcweir // c = 1 - 0.5a - 0.5d 192*cdf0e10cSrcweir // 193*cdf0e10cSrcweir // The integral itself then amounts to: 194*cdf0e10cSrcweir // 195*cdf0e10cSrcweir // 0.5 nT^2 / a + (nT-a) + (nT - 0.5 nT^2 / d) 196*cdf0e10cSrcweir // 197*cdf0e10cSrcweir // (where each of the three summands correspond to the 198*cdf0e10cSrcweir // three intervals above, and are applied only if nT 199*cdf0e10cSrcweir // has reached the corresponding interval) 200*cdf0e10cSrcweir // 201*cdf0e10cSrcweir // The graph of the change rate is a trapezoid: 202*cdf0e10cSrcweir // 203*cdf0e10cSrcweir // | 204*cdf0e10cSrcweir // 1| /--------------\ 205*cdf0e10cSrcweir // | / \ 206*cdf0e10cSrcweir // | / \ 207*cdf0e10cSrcweir // | / \ 208*cdf0e10cSrcweir // ----------------------------- 209*cdf0e10cSrcweir // 0 a d 1 210*cdf0e10cSrcweir // 211*cdf0e10cSrcweir //*/ 212*cdf0e10cSrcweir const double nC( 1.0 - 0.5*mnAccelerationFraction - 0.5*mnDecelerationFraction ); 213*cdf0e10cSrcweir 214*cdf0e10cSrcweir // this variable accumulates the new time value 215*cdf0e10cSrcweir double nTPrime(0.0); 216*cdf0e10cSrcweir 217*cdf0e10cSrcweir if( nT < mnAccelerationFraction ) 218*cdf0e10cSrcweir { 219*cdf0e10cSrcweir nTPrime += 0.5*nT*nT/mnAccelerationFraction; // partial first interval 220*cdf0e10cSrcweir } 221*cdf0e10cSrcweir else 222*cdf0e10cSrcweir { 223*cdf0e10cSrcweir nTPrime += 0.5*mnAccelerationFraction; // full first interval 224*cdf0e10cSrcweir 225*cdf0e10cSrcweir if( nT <= 1.0-mnDecelerationFraction ) 226*cdf0e10cSrcweir { 227*cdf0e10cSrcweir nTPrime += nT-mnAccelerationFraction; // partial second interval 228*cdf0e10cSrcweir } 229*cdf0e10cSrcweir else 230*cdf0e10cSrcweir { 231*cdf0e10cSrcweir nTPrime += 1.0 - mnAccelerationFraction - mnDecelerationFraction; // full second interval 232*cdf0e10cSrcweir 233*cdf0e10cSrcweir const double nTRelative( nT - 1.0 + mnDecelerationFraction ); 234*cdf0e10cSrcweir 235*cdf0e10cSrcweir nTPrime += nTRelative - 0.5*nTRelative*nTRelative / mnDecelerationFraction; 236*cdf0e10cSrcweir } 237*cdf0e10cSrcweir } 238*cdf0e10cSrcweir 239*cdf0e10cSrcweir // normalize, and assign to work variable 240*cdf0e10cSrcweir nT = nTPrime / nC; 241*cdf0e10cSrcweir } 242*cdf0e10cSrcweir 243*cdf0e10cSrcweir return nT; 244*cdf0e10cSrcweir } 245*cdf0e10cSrcweir } 246*cdf0e10cSrcweir } 247