aboutsummaryrefslogtreecommitdiffhomepage
path: root/src/animator/SkAnimator.cpp
blob: 830f4535f819253f8efc5ae0c1a3ed5f564ba397 (plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
335
336
337
338
339
340
341
342
343
344
345
346
347
348
349
350
351
352
353
354
355
356
357
358
359
360
361
362
363
364
365
366
367
368
369
370
371
372
373
374
375
376
377
378
379
380
381
382
383
384
385
386
387
388
389
390
391
392
393
394
395
396
397
398
399
400
401
402
403
404
405
406
407
408
409
410
411
412
413
414
415
416
417
418
419
420
421
422
423
424
425
426
427
428
429
430
431
432
433
434
435
436
437
438
439
440
441
442
443
444
445
446
447
448
449
450
451
452
453
454
455
456
457
458
459
460
461
462
463
464
465
466
467
468
469
470
471
472
473
474
475
476
477
478
479
480
481
482
483
484
485
486
487
488
489
490
491
492
493
494
495
496
497
498
499
500
501
502
503
504
505
506
507
508
509
510
511
512
513
514
515
516
517
518
519
520
521
522
523
524
525
526
527
528
529
530
531
532
533
534
535
536
537
538
539
540
541
542
543
544
545
546
547
548
549
550
551
552
553
554
555
556
557
558
559
560
561
562
563
564
565
566
567
568
569
570
571
572
573
574
575
576
577
578
579
580
581
582
583
584
585
586
587
588
589
590
591
592
593
594
595
596
597
598
599
600
601
602
603
604
605
606
607
608
609
610
611
612
613
614
615
616
617
618
619
620
621
622
623
624
625
626
627
628
629
630
631
632
633
634
635
636
637
638
639
640
641
642
643
644
645
646
647
648
649
650
651
652
653
654
655
656
657
658
659
660
661
662
663
664
665
666
667
668
669
670
671
672
673
674
675
676
677
678
679
680
681
682
683
684
685
686
687
688
689
690
691
692
693
694
695
696
697
698
699
700
701
702
703
704
705
706
707
708
709
710
711
712
713
/* libs/graphics/animator/SkAnimator.cpp
**
** Copyright 2006, The Android Open Source Project
**
** Licensed 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 
**
** Unless required by applicable law or agreed to in writing, software 
** distributed under the License is distributed on an "AS IS" BASIS, 
** WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 
** See the License for the specific language governing permissions and 
** limitations under the License.
*/

#include "SkAnimator.h"
#include "SkAnimateMaker.h"
#include "SkCanvas.h"
#include "SkDisplayApply.h"
#include "SkDisplayMovie.h"
#include "SkDisplayTypes.h"
#include "SkDisplayXMLParser.h"
#include "SkStream.h"
#include "SkScript.h"
#include "SkScript2.h" //   compiled script experiment
#include "SkSystemEventTypes.h"
#include "SkTypedArray.h"
#ifdef ANDROID
#include "SkDrawExtraPathEffect.h"
#endif
#ifdef SK_DEBUG
#include "SkTime.h"
#endif

#if defined SK_BUILD_FOR_WIN32 && defined SK_DEBUG
    #define _static
    extern const char gMathPrimerText[];
    extern const char gMathPrimerBinary[];
#else
    #define _static static
#endif

_static const char gMathPrimerText[] = 
"<screenplay>"
    "<Math id=\"Math\"/>"
    "<Number id=\"Number\"/>"
"</screenplay>";

#define gMathPrimer gMathPrimerText

SkAnimator::SkAnimator() : fMaker(NULL) {
    initialize();
}

SkAnimator::~SkAnimator() {
    SkDELETE(fMaker);
}

void SkAnimator::addExtras(SkExtras* extras) {
    *fMaker->fExtras.append() = extras;
}

bool SkAnimator::appendStream(SkStream* stream) {
    return decodeStream(stream);
}

bool SkAnimator::decodeMemory(const void* buffer, size_t size)
{
    fMaker->fFileName.reset();
    SkDisplayXMLParser parser(*fMaker);
    return parser.parse((const char*)buffer, size);
}

bool SkAnimator::decodeStream(SkStream* stream)
{
    SkDisplayXMLParser parser(*fMaker);
    bool result = parser.parse(*stream);
    fMaker->setErrorString();
    return result;
}

bool SkAnimator::decodeDOM(const SkDOM& dom, const SkDOMNode* node)
{
    fMaker->fFileName.reset();
    SkDisplayXMLParser parser(*fMaker);
    return parser.parse(dom, node);
}

bool SkAnimator::decodeURI(const char uri[]) {
//  SkDebugf("animator decode %s\n", uri);

//    SkStream* stream = SkStream::GetURIStream(fMaker->fPrefix.c_str(), uri);
    SkStream* stream = new SkFILEStream(uri);

    SkAutoTDelete<SkStream> autoDel(stream);
    setURIBase(uri);
    return decodeStream(stream);
}

bool SkAnimator::doCharEvent(SkUnichar code) {
    if (code == 0)
        return false;
    struct SkEventState state;
    state.fCode = code;
    fMaker->fEnableTime = fMaker->getAppTime();
    bool result = fMaker->fEvents.doEvent(*fMaker, SkDisplayEvent::kKeyChar, &state);
    fMaker->notifyInval();
    return result;
}

bool SkAnimator::doClickEvent(int clickState, SkScalar x, SkScalar y) {
    SkASSERT(clickState >= 0 && clickState <= 2);
    struct SkEventState state;
    state.fX = x;
    state.fY = y;
    fMaker->fEnableTime = fMaker->getAppTime();
    bool result = fMaker->fEvents.doEvent(*fMaker, 
        clickState == 0 ? SkDisplayEvent::kMouseDown : 
        clickState == 1 ? SkDisplayEvent::kMouseDrag : 
        SkDisplayEvent::kMouseUp, &state);
    fMaker->notifyInval();
    return result;
}

bool SkAnimator::doKeyEvent(SkKey code) {
    if (code == 0)
        return false;
    struct SkEventState state;
    state.fCode = code;
    fMaker->fEnableTime = fMaker->getAppTime();
    bool result = fMaker->fEvents.doEvent(*fMaker, SkDisplayEvent::kKeyPress, &state);
    fMaker->notifyInval();
    return result;
}

bool SkAnimator::doKeyUpEvent(SkKey code) {
    if (code == 0)
        return false;
    struct SkEventState state;
    state.fCode = code;
    fMaker->fEnableTime = fMaker->getAppTime();
    bool result = fMaker->fEvents.doEvent(*fMaker, SkDisplayEvent::kKeyPressUp, &state);
    fMaker->notifyInval();
    return result;
}

bool SkAnimator::doUserEvent(const SkEvent& evt) {
    fMaker->fEnableTime = fMaker->getAppTime();
    return onEvent(evt);
}

SkAnimator::DifferenceType SkAnimator::draw(SkCanvas* canvas, SkPaint* paint, SkMSec time) {
    if (paint == NULL)
        return draw(canvas, time);
    fMaker->fScreenplay.time = time;
    fMaker->fCanvas = canvas;
    fMaker->fPaint = paint;
    fMaker->fDisplayList.fHasUnion = false;
    int result = fMaker->fDisplayList.draw(*fMaker, time);
    if (result)
        result += fMaker->fDisplayList.fHasUnion;
    return (DifferenceType) result;
}

SkAnimator::DifferenceType SkAnimator::draw(SkCanvas* canvas, SkMSec time) {
    SkPaint paint;
    return draw(canvas, &paint, time);
}
    
#ifdef SK_DEBUG
void SkAnimator::eventDone(const SkEvent& ) {
}
#endif

bool SkAnimator::findClickEvent(SkScalar x, SkScalar y) {
    struct SkEventState state;
    state.fDisable = true;
    state.fX = x;
    state.fY = y;
    fMaker->fEnableTime = fMaker->getAppTime();
    bool result = fMaker->fEvents.doEvent(*fMaker, SkDisplayEvent::kMouseDown, &state);
    fMaker->notifyInval();
    return result;
}

const SkAnimator* SkAnimator::getAnimator(const SkDisplayable* displayable) const {
    if (displayable->getType() != SkType_Movie)
        return NULL;
    const SkDisplayMovie* movie = (const SkDisplayMovie*) displayable;
    return movie->getAnimator();
}

const SkDisplayable* SkAnimator::getElement(const char* id) {
    SkDisplayable* element;
    if (fMaker->find(id, &element) == false)
        return NULL;
    return (const SkDisplayable*) element;
}

SkElementType SkAnimator::getElementType(const SkDisplayable* ae) {
    SkDisplayable* element = (SkDisplayable*) ae;
    const SkMemberInfo* info = SkDisplayType::GetMembers(fMaker, element->getType(), NULL);
    return (SkElementType) SkDisplayType::Find(fMaker, info);
}

SkElementType SkAnimator::getElementType(const char* id) {
    const SkDisplayable* element = getElement(id);
    return getElementType(element);
}

const SkMemberInfo* SkAnimator::getField(const SkDisplayable* ae, const char* field) {
    SkDisplayable* element = (SkDisplayable*) ae;
    const SkMemberInfo* info = element->getMember(field);
    return (const SkMemberInfo*) info;
}

const SkMemberInfo* SkAnimator::getField(const char* elementID, const char* field) {
    const SkDisplayable* element = getElement(elementID);
    return getField(element, field);
}

SkFieldType SkAnimator::getFieldType(const SkMemberInfo* ai) {
    const SkMemberInfo* info = (const SkMemberInfo*) ai;
    return (SkFieldType) info->getType();
}

SkFieldType SkAnimator::getFieldType(const char* id, const char* fieldID) {
    const SkMemberInfo* field = getField(id, fieldID);
    return getFieldType(field);
}

 static bool getArrayCommon(const SkDisplayable* ae, const SkMemberInfo* ai,
     int index, SkOperand* operand, SkDisplayTypes type) {
    const SkDisplayable* element = (const SkDisplayable*) ae;
    const SkMemberInfo* info = (const SkMemberInfo*) ai;
    SkASSERT(info->fType == SkType_Array);
    return info->getArrayValue(element, index, operand);
}

int32_t SkAnimator::getArrayInt(const SkDisplayable* ae, 
        const SkMemberInfo* ai, int index) {
    SkOperand operand;
    bool result = getArrayCommon(ae, ai, index, &operand, SkType_Int);
    return result ? operand.fS32 : SK_NaN32;
}

int32_t SkAnimator::getArrayInt(const char* id, const char* fieldID, int index) {
    const SkDisplayable* element = getElement(id);
    if (element == NULL)
        return SK_NaN32;
    const SkMemberInfo* field = getField(element, fieldID);
    if (field == NULL)
        return SK_NaN32;
    return getArrayInt(element, field, index);
}

SkScalar SkAnimator::getArrayScalar(const SkDisplayable* ae, 
        const SkMemberInfo* ai, int index) {
    SkOperand operand;
    bool result = getArrayCommon(ae, ai, index, &operand, SkType_Float);
    return result ? operand.fScalar : SK_ScalarNaN;
}

SkScalar SkAnimator::getArrayScalar(const char* id, const char* fieldID, int index) {
    const SkDisplayable* element = getElement(id);
    if (element == NULL)
        return SK_ScalarNaN;
    const SkMemberInfo* field = getField(element, fieldID);
    if (field == NULL)
        return SK_ScalarNaN;
    return getArrayScalar(element, field, index);
}

const char* SkAnimator::getArrayString(const SkDisplayable* ae, 
        const SkMemberInfo* ai, int index) {
    SkOperand operand;
    bool result = getArrayCommon(ae, ai, index, &operand, SkType_String);
    return result ? operand.fString->c_str() : NULL;
}

const char* SkAnimator::getArrayString(const char* id, const char* fieldID, int index) {
    const SkDisplayable* element = getElement(id);
    if (element == NULL)
        return NULL;
    const SkMemberInfo* field = getField(element, fieldID);
    if (field == NULL)
        return NULL;
    return getArrayString(element, field, index);
}

SkMSec SkAnimator::getInterval() {
    return fMaker->fMinimumInterval == (SkMSec) -1 ? 0 : fMaker->fMinimumInterval;
}

void SkAnimator::getInvalBounds(SkRect* inval) {
    if (fMaker->fDisplayList.fHasUnion) {
        inval->fLeft = SkIntToScalar(fMaker->fDisplayList.fInvalBounds.fLeft);
        inval->fTop = SkIntToScalar(fMaker->fDisplayList.fInvalBounds.fTop);
        inval->fRight = SkIntToScalar(fMaker->fDisplayList.fInvalBounds.fRight);
        inval->fBottom = SkIntToScalar(fMaker->fDisplayList.fInvalBounds.fBottom);
    } else {
        inval->fLeft = inval->fTop = -SK_ScalarMax;
        inval->fRight = inval->fBottom = SK_ScalarMax;
    }
}

const SkXMLParserError* SkAnimator::getParserError() {
    return &fMaker->fError;
}

const char* SkAnimator::getParserErrorString() {
    if (fMaker->fErrorString.size() == 0 && fMaker->fError.hasError())
        fMaker->setErrorString();
    return fMaker->fErrorString.c_str();
}

int32_t SkAnimator::getInt(const SkDisplayable* element, const SkMemberInfo* info) {
    if (info->fType != SkType_MemberProperty) {
        SkOperand operand;
        if (info->getType() == SkType_Int) {
            info->getValue(element, &operand, 1);
            return operand.fS32;
        }
        return SK_NaN32;
    }
    SkScriptValue scriptValue;
    bool success = element->getProperty(info->propertyIndex(), &scriptValue);
    if (success && scriptValue.fType == SkType_Int)
        return scriptValue.fOperand.fS32;
    return SK_NaN32;
}

int32_t SkAnimator::getInt(const char* id, const char* fieldID) {
    const SkDisplayable* element = getElement(id);
    if (element == NULL)
        return SK_NaN32;
    const SkMemberInfo* field = getField(element, fieldID);
    if (field == NULL)
        return SK_NaN32;
    return getInt(element, field);
}

SkScalar SkAnimator::getScalar(const SkDisplayable* element, const SkMemberInfo* info) {
    if (info->fType != SkType_MemberProperty) {
        SkOperand operand;
        if (info->getType() == SkType_Float) {
            info->getValue(element, &operand, 1);
            return operand.fScalar;
        }
        return SK_ScalarNaN;
    }
    SkScriptValue scriptValue;
    bool success = element->getProperty(info->propertyIndex(), &scriptValue);
    if (success && scriptValue.fType == SkType_Float)
        return scriptValue.fOperand.fScalar;
    return SK_ScalarNaN;
}

SkScalar SkAnimator::getScalar(const char* id, const char* fieldID) {
    const SkDisplayable* element = getElement(id);
    if (element == NULL)
        return SK_ScalarNaN;
    const SkMemberInfo* field = getField(element, fieldID);
    if (field == NULL)
        return SK_ScalarNaN;
    return getScalar(element, field);
}

const char* SkAnimator::getString(const SkDisplayable* ae, 
        const SkMemberInfo* ai) {
    const SkDisplayable* element = (const SkDisplayable*) ae;
    const SkMemberInfo* info = (const SkMemberInfo*) ai;
    SkString* temp;
    info->getString(element, &temp);
    return temp->c_str();
}

const char* SkAnimator::getString(const char* id, const char* fieldID) {
    const SkDisplayable* element = getElement(id);
    if (element == NULL)
        return NULL;
    const SkMemberInfo* field = getField(element, fieldID);
    if (field == NULL)
        return NULL;
    return getString(element, field);
}

const char* SkAnimator::getURIBase() {
    return fMaker->fPrefix.c_str();
}

void SkAnimator::initialize() {
    SkDELETE(fMaker);
    fMaker = SkNEW_ARGS(SkAnimateMaker, (this, NULL, NULL));
    decodeMemory(gMathPrimer, sizeof(gMathPrimer)-1);
#ifdef ANDROID
    InitializeSkExtraPathEffects(this);
#endif
}


#ifdef SK_DEBUG
bool SkAnimator::isTrackingEvents() {
    return false;
}
#endif

bool SkAnimator::onEvent(const SkEvent& evt) {
#ifdef SK_DEBUG
    SkAnimator* root = fMaker->getRoot();
    if (root == NULL)
        root = this;
    if (root->isTrackingEvents())
        root->eventDone(evt);
#endif
    if (evt.isType(SK_EventType_OnEnd)) {
        SkEventState eventState;
        bool success = evt.findPtr("anim", (void**) &eventState.fDisplayable);
        SkASSERT(success);
        success = evt.findS32("time", (int32_t*) &fMaker->fEnableTime);
        SkASSERT(success);
        fMaker->fAdjustedStart = fMaker->getAppTime() - fMaker->fEnableTime;
        fMaker->fEvents.doEvent(*fMaker, SkDisplayEvent::kOnEnd, &eventState);
        fMaker->fAdjustedStart = 0;
        goto inval;
    }
    if (evt.isType(SK_EventType_Delay)) {
        fMaker->doDelayedEvent();
        goto inval;
    }
    {
        const char* id = evt.findString("id");
        if (id == NULL)
            return false;
        SkDisplayable** firstMovie = fMaker->fMovies.begin();
        SkDisplayable** endMovie = fMaker->fMovies.end();
        for (SkDisplayable** ptr = firstMovie; ptr < endMovie; ptr++) {
            SkDisplayMovie* movie = (SkDisplayMovie*) *ptr;
            movie->doEvent(evt);
        }
        {
            SkDisplayable* event;
            if (fMaker->find(id, &event) == false)
                return false;
    #if defined SK_DEBUG && defined SK_DEBUG_ANIMATION_TIMING
            SkString debugOut;
            SkMSec realTime = fMaker->getAppTime();
            debugOut.appendS32(realTime - fMaker->fDebugTimeBase);
            debugOut.append(" onEvent id=");
            debugOut.append(id);
    #endif
            SkMSec time = evt.getFast32();
            if (time != 0) {
                SkMSec app  = fMaker->getAppTime();
                fMaker->setEnableTime(app, time);
    #if defined SK_DEBUG && defined SK_DEBUG_ANIMATION_TIMING
                debugOut.append(" time=");
                debugOut.appendS32(time - fMaker->fDebugTimeBase);
                debugOut.append(" adjust=");
                debugOut.appendS32(fMaker->fAdjustedStart);
    #endif
            }
    #if defined SK_DEBUG && defined SK_DEBUG_ANIMATION_TIMING
            SkDebugf("%s\n", debugOut.c_str());
    #endif
            SkASSERT(event->isEvent());
            SkDisplayEvent* displayEvent = (SkDisplayEvent*) event;
            displayEvent->populateInput(*fMaker, evt);
            displayEvent->enableEvent(*fMaker);
        }
    }
inval:
    fMaker->notifyInval();
    return true;
}

void SkAnimator::onEventPost(SkEvent* evt, SkEventSinkID sinkID)
{
#ifdef SK_DEBUG
    SkAnimator* root = fMaker->getRoot();
    if (root) {
        root->onEventPost(evt, sinkID);
        return;
    }
#else
    SkASSERT(sinkID == this->getSinkID() || this->getHostEventSinkID() == sinkID);
#endif
    SkEvent::Post(evt, sinkID);
}

void SkAnimator::onEventPostTime(SkEvent* evt, SkEventSinkID sinkID, SkMSec time)
{
#ifdef SK_DEBUG
    SkAnimator* root = fMaker->getRoot();
    if (root) {
        root->onEventPostTime(evt, sinkID, time);
        return;
    }
#else
    SkASSERT(sinkID == this->getSinkID() || this->getHostEventSinkID() == sinkID);
#endif
    SkEvent::PostTime(evt, sinkID, time);
}

void SkAnimator::reset() {
    fMaker->fDisplayList.reset();
}

SkEventSinkID SkAnimator::getHostEventSinkID() const {
    return fMaker->fHostEventSinkID; 
}

void SkAnimator::setHostEventSinkID(SkEventSinkID target) {
    fMaker->fHostEventSinkID = target; 
}

void SkAnimator::onSetHostHandler(Handler ) {
}

void SkAnimator::setJavaOwner(Handler ) {
}

bool SkAnimator::setArrayString(const char* id, const char* fieldID, const char** array, int num)
{
    SkTypedArray tArray(SkType_String);
    tArray.setCount(num);
    for (int i = 0; i < num; i++) {
        SkOperand op;
        op.fString = new SkString(array[i]);
        tArray[i] = op;
    }
    return setArray(id, fieldID, tArray);
}
bool SkAnimator::setArrayInt(const char* id, const char* fieldID, const int* array, int num)
{
    SkTypedArray tArray(SkType_Int);
    tArray.setCount(num);
    for (int i = 0; i < num; i++) {
        SkOperand op;   
        op.fS32 = array[i];
        tArray[i] = op;
    }
    return setArray(id, fieldID, tArray);
}

bool SkAnimator::setArray(SkDisplayable* element, const SkMemberInfo* info, SkTypedArray array) {
    if (info->fType != SkType_Array)
        return false;   //the field is not an array
    //i think we can handle the case where the displayable itself is an array differently from the
    //case where it has an array - for one thing, if it is an array, i think we can change its type
    //if it's not, we cannot
    SkDisplayTypes type = element->getType();
    if (type == SkType_Array) {
        SkDisplayArray* dispArray = (SkDisplayArray*) element;
        dispArray->values = array;  
        return true;
    }
    else
        return false;   //currently i don't care about this case
}

bool SkAnimator::setArray(const char* id, const char* fieldID, SkTypedArray array) {
    SkDisplayable* element = (SkDisplayable*) getElement(id);
    //should I go ahead and change all 'NULL's to 'NULL'?
    if (element == NULL)
        return false;
    const SkMemberInfo* field = getField(element, fieldID);
    if (field == NULL)
        return false;
    return setArray(element, field, array);
}

bool SkAnimator::setInt(SkDisplayable* element, const SkMemberInfo* info, int32_t s32) {
    if (info->fType != SkType_MemberProperty) {
        SkOperand operand;
        operand.fS32 = s32;
        SkASSERT(info->getType() == SkType_Int);
        info->setValue(element, &operand, 1);
    } else {
        SkScriptValue scriptValue;
        scriptValue.fType = SkType_Int;
        scriptValue.fOperand.fS32 = s32;
        element->setProperty(info->propertyIndex(), scriptValue);
    }
    return true;
}

bool SkAnimator::setInt(const char* id, const char* fieldID, int32_t s32) {
    SkDisplayable* element = (SkDisplayable*) getElement(id);
    if (element == NULL)
        return false;
    const SkMemberInfo* field = getField(element, fieldID);
    if (field == NULL)
        return false;
    return setInt(element, field, s32);
}

bool SkAnimator::setScalar(SkDisplayable* element, const SkMemberInfo* info, SkScalar scalar) {
    if (info->fType != SkType_MemberProperty) {
        SkOperand operand;
        operand.fScalar = scalar;
        SkASSERT(info->getType() == SkType_Float);
        info->setValue(element, &operand, 1);
    } else {
        SkScriptValue scriptValue;
        scriptValue.fType = SkType_Float;
        scriptValue.fOperand.fScalar = scalar;
        element->setProperty(info->propertyIndex(), scriptValue);
    }
    return true;
}

bool SkAnimator::setScalar(const char* id, const char* fieldID, SkScalar scalar) {
    SkDisplayable* element = (SkDisplayable*) getElement(id);
    if (element == NULL)
        return false;
    const SkMemberInfo* field = getField(element, fieldID);
    if (field == NULL)
        return false;
    return setScalar(element, field, scalar);
}

bool SkAnimator::setString(SkDisplayable* element, 
        const SkMemberInfo* info, const char* str) {
    // !!! until this is fixed, can't call script with global references from here 
    info->setValue(*fMaker, NULL, 0, info->fCount, element, info->getType(), str, strlen(str));
    return true;
}

bool SkAnimator::setString(const char* id, const char* fieldID, const char* str) {
    SkDisplayable* element = (SkDisplayable*) getElement(id);
    if (element == NULL)
        return false;
    const SkMemberInfo* field = getField(element, fieldID);
    if (field == NULL)
        return false;
    return setString(element, field, str);
}

void SkAnimator::setTimeline(const Timeline& timeline) {
    fMaker->fTimeline = &timeline;
}

void SkAnimator::setURIBase(const char* uri) {
    if (uri)
    {
        const char* tail = strrchr(uri, '/');
        if (tail) {
            SkString prefix(uri, tail - uri + 1);
            if (uri[0] != '.' /*SkStream::IsAbsoluteURI(uri)*/)
                fMaker->fPrefix.reset();
            fMaker->fPrefix.append(prefix);
            fMaker->fFileName.set(tail + 1);
        } else
            fMaker->fFileName.set(uri);
    }
}

#ifdef SK_DEBUG
bool SkAnimator::NoLeaks() {
#ifdef SK_BUILD_FOR_MAC
    if (SkDisplayable::fAllocations.count() == 0)
        return true;
//  return SkDisplayable::fAllocationCount == 0;
    SkDebugf("!!! leaked %d displayables:\n", SkDisplayable::fAllocations.count());
    for (SkDisplayable** leak = SkDisplayable::fAllocations.begin(); leak < SkDisplayable::fAllocations.end(); leak++)
        SkDebugf("%08x %s\n", *leak, (*leak)->id);
#endif
    return false;
}
#endif

#ifdef SK_SUPPORT_UNITTEST
#include "SkAnimatorScript.h"
#include "SkBase64.h"
#include "SkParse.h"
#include "SkMemberInfo.h"

#define unittestline(type)  { #type , type::UnitTest }
#endif


void SkAnimator::Init(bool runUnitTests) {
#ifdef SK_SUPPORT_UNITTEST
    if (runUnitTests == false)
        return;
    static const struct {
        const char* fTypeName;
        void (*fUnitTest)( );
    } gUnitTests[] = {
        unittestline(SkBase64),
        unittestline(SkDisplayType),
        unittestline(SkParse),
        unittestline(SkScriptEngine),
//      unittestline(SkScriptEngine2),  // compiled script experiment
        unittestline(SkAnimatorScript)
    };
    for (int i = 0; i < (int)SK_ARRAY_COUNT(gUnitTests); i++)
    {
        SkDebugf("SkAnimator: Running UnitTest for %s\n", gUnitTests[i].fTypeName);
        gUnitTests[i].fUnitTest();
        SkDebugf("SkAnimator: End UnitTest for %s\n", gUnitTests[i].fTypeName);
    }
#endif
}

void SkAnimator::Term() {
}