C++ SkDrawable类代码示例

int SkDisplayList::SearchForMatch(SkDrawable* match, SkTDDrawableArray** list,
        SkGroup** parent, SkGroup** found, SkTDDrawableArray**grandList) { 
    *found = NULL;
    for (int index = 0; index < (*list)->count(); index++) {
        SkDrawable* draw = (**list)[index];
        if (draw == match)
            return index;
        if (draw->isApply()) {
            SkApply* apply = (SkApply*) draw;
            if (apply->scope == match)
                return index;
            if (apply->scope->isGroup() && SearchGroupForMatch(apply->scope, match, list, parent, found, grandList, index))
                return index;
            if (apply->mode == SkApply::kMode_create) {
                for (SkDrawable** ptr = apply->fScopes.begin(); ptr < apply->fScopes.end(); ptr++) {
                    SkDrawable* scope = *ptr;
                    if (scope == match)
                        return index;
                    //perhaps should call SearchGroupForMatch here as well (on scope)
                }
            } 
        }
        if (draw->isGroup() && SearchGroupForMatch(draw, match, list, parent, found, grandList, index)) 
            return index;
        
    }
    return -1;
}

void SkGroup::initialize() {
    for (SkDrawable** ptr = fChildren.begin(); ptr < fChildren.end(); ptr++) {
        SkDrawable* drawable = *ptr;
        if (drawable->isDrawable() == false)
            continue;
        drawable->initialize();
    }
}

void SkGroup::setSteps(int steps) {
    for (SkDrawable** ptr = fChildren.begin(); ptr < fChildren.end(); ptr++) {
        SkDrawable* drawable = *ptr;
        if (drawable->isDrawable() == false)
            continue;
        drawable->setSteps(steps);
    }
}

bool SkGroup::contains(SkDisplayable* match) {
    for (SkDrawable** ptr = fChildren.begin(); ptr < fChildren.end(); ptr++) {
        SkDrawable* drawable = *ptr;
        if (drawable == match || drawable->contains(match))
            return true;
    }
    return false;
}

void SkDisplayList::reset() {
    for (int index = 0; index < fDrawList.count(); index++) {
        SkDrawable* draw = fDrawList[index];
        if (draw->isApply() == false)
            continue;
        SkApply* apply = (SkApply*) draw;
        apply->reset();
    }           
}

bool SkGroup::enable(SkAnimateMaker& maker ) {
    reset();
    for (SkDrawable** ptr = fChildren.begin(); ptr < fChildren.end(); ptr++) {
        SkDrawable* drawable = *ptr;
        if (ifCondition(maker, drawable, enableCondition) == false)
            continue;
        drawable->enable(maker);
    }
    return true;    // skip add; already added so that scope is findable by children
}

bool SkGroup::doEvent(SkDisplayEvent::Kind kind, SkEventState* state) {
    bool handled = false;
    for (SkDrawable** ptr = fChildren.begin(); ptr < fChildren.end(); ptr++) {
        SkDrawable* drawable = *ptr;
        if (drawable->isDrawable() == false)
            continue;
        handled |= drawable->doEvent(kind, state);
    }
    return handled;
}

bool SkGroup::resolveIDs(SkAnimateMaker& maker, SkDisplayable* orig, SkApply* apply) {
    SkGroup* original = (SkGroup*) orig;
    SkTDDrawableArray& originalChildren = original->fChildren;
    SkDrawable** originalPtr = originalChildren.begin();
    SkDrawable** ptr = fChildren.begin();
    SkDrawable** end = fChildren.end();
    SkDrawable** origChild = ((SkGroup*) orig)->fChildren.begin();
    while (ptr < end) {
        SkDrawable* drawable = *ptr++;
        maker.resolveID(drawable, *origChild++);
        if (drawable->resolveIDs(maker, *originalPtr++, apply) == true)
            return true; // failed
    }
    return false;
}

bool SkGroup::draw(SkAnimateMaker& maker) {
    bool conditionTrue = ifCondition(maker, this, condition);
    bool result = false;
    for (SkDrawable** ptr = fChildren.begin(); ptr < fChildren.end(); ptr++) {
        SkDrawable* drawable = *ptr;
        if (drawable->isDrawable() == false)
            continue;
        if (conditionTrue == false) {
            if (drawable->isApply())
                ((SkApply*) drawable)->disable();
            continue;
        }
        maker.validate();
        result |= drawable->draw(maker);
        maker.validate();
    }
    return result;
}

int SkGroup::findGroup(SkDrawable* match,  SkTDDrawableArray** list,
                 SkGroup** parent, SkGroup** found, SkTDDrawableArray** grandList) {
    *list = &fChildren;
    for (SkDrawable** ptr = fChildren.begin(); ptr < fChildren.end(); ptr++) {
        SkDrawable* drawable = *ptr;
        if (drawable->isGroup()) {
            SkGroup* childGroup = (SkGroup*) drawable;
            if (childGroup->fOriginal == match)
                goto foundMatch;
        }
        if (drawable == match) {
foundMatch:
            *parent = this;
            return (int) (ptr - fChildren.begin());
        }
    }
    *grandList = &fChildren;
    return SkDisplayList::SearchForMatch(match, list, parent, found, grandList);
}

bool SkActive::immediate(bool enable) {
    SkMSec time = 0;
    bool result = false;
    SkDrawable* drawable = fApply.scope;
    SkMSec final = fMaxTime;
    do {
        bool applied = fAnimators.count() == 0;
        fApply.fLastTime = time;
        fApply.refresh(fMaker);
        for (int index = 0; index < fAnimators.count(); index++) {
            SkAnimateBase* animate = fAnimators[index];
            SkState& state = fState[index];
            if (state.fMode != SkApply::kMode_immediate)
                continue;
            if (state.fBegin > time)
                continue;
            if (time > state.fBegin + state.fDuration)
                continue;
            applied = true;
            SkOperandInterpolator& interpolator = *fInterpolators[index];
            int count = animate->components();
            if (animate->formula.size() > 0) {
                SkTDOperandArray values;
                values.setCount(count);
                bool success = animate->fFieldInfo->setValue(fMaker, &values, 0, 0, NULL, 
                    animate->getValuesType(), animate->formula);
                SkASSERT(success);
                fApply.applyValues(index, values.begin(), count, animate->getValuesType(), time);
            } else {
                SkAutoSTMalloc<16, SkOperand> values(count);
                interpolator.timeToValues(time, values.get());
                fApply.applyValues(index, values.get(), count, animate->getValuesType(), time);
            }
        }
        if (enable)
            drawable->enable(fMaker);
        else if (applied)
            result |= drawable->draw(fMaker);
        time += SK_MSec1;
    } while (time <= final);
    return result;
}

DEF_TEST(FlattenDrawable, r) {
    // Create and serialize the test drawable
    sk_sp<SkDrawable> drawable(new IntDrawable(1, 2, 3, 4));
    SkPaint paint;
    paint.setColor(SK_ColorBLUE);
    sk_sp<RootDrawable> root(new RootDrawable(5, 6, 7, 8, paint, 9, 10, 11, 12, drawable.get()));
    SkBinaryWriteBuffer writeBuffer;
    writeBuffer.writeFlattenable(root.get());

    // Copy the contents of the write buffer into a read buffer
    sk_sp<SkData> data = SkData::MakeUninitialized(writeBuffer.bytesWritten());
    writeBuffer.writeToMemory(data->writable_data());
    SkReadBuffer readBuffer(data->data(), data->size());
    register_test_drawables(readBuffer);

    // Deserialize and verify the drawable
    sk_sp<SkDrawable> out((SkDrawable*)readBuffer.readFlattenable(SkFlattenable::kSkDrawable_Type));
    REPORTER_ASSERT(r, out);
    REPORTER_ASSERT(r, !strcmp("RootDrawable", out->getTypeName()));

    RootDrawable* rootOut = (RootDrawable*) out.get();
    REPORTER_ASSERT(r, 5 == rootOut->compoundDrawable()->intDrawable()->a());
    REPORTER_ASSERT(r, 6 == rootOut->compoundDrawable()->intDrawable()->b());
    REPORTER_ASSERT(r, 7 == rootOut->compoundDrawable()->intDrawable()->c());
    REPORTER_ASSERT(r, 8 == rootOut->compoundDrawable()->intDrawable()->d());
    REPORTER_ASSERT(r, SK_ColorBLUE ==
            rootOut->compoundDrawable()->paintDrawable()->paint().getColor());
    REPORTER_ASSERT(r, 9 == rootOut->intDrawable()->a());
    REPORTER_ASSERT(r, 10 == rootOut->intDrawable()->b());
    REPORTER_ASSERT(r, 11 == rootOut->intDrawable()->c());
    REPORTER_ASSERT(r, 12 == rootOut->intDrawable()->d());

    // Note that we can still recognize the generic drawable as an IntDrawable
    SkDrawable* generic = rootOut->drawable();
    REPORTER_ASSERT(r, !strcmp("IntDrawable", generic->getTypeName()));
    IntDrawable* integer = (IntDrawable*) generic;
    REPORTER_ASSERT(r, 1 == integer->a());
    REPORTER_ASSERT(r, 2 == integer->b());
    REPORTER_ASSERT(r, 3 == integer->c());
    REPORTER_ASSERT(r, 4 == integer->d());
}

void SkGroup::dumpDrawables(SkAnimateMaker* maker) {
    SkDisplayList::fIndent += 4;
    int save = SkDisplayList::fDumpIndex;
    SkDisplayList::fDumpIndex = 0;
    bool closedYet = false;
    for (SkDrawable** ptr = fChildren.begin(); ptr < fChildren.end(); ptr++) {
        if (closedYet == false) {
            closedYet = true;
            SkDebugf(">\n");
        }
        SkDrawable* drawable = *ptr;
        drawable->dump(maker);
        SkDisplayList::fDumpIndex++;
    }
    SkDisplayList::fIndent -= 4;
    SkDisplayList::fDumpIndex = save;
    if (closedYet) //we had children, now it's time to close the group
        dumpEnd(maker);
    else    //no children
        SkDebugf("/>\n");
}

bool SkDisplayList::draw(SkAnimateMaker& maker, SkMSec inTime) {
    validate();
    fInTime = inTime;
    bool result = false;
    fInvalBounds.setEmpty();
    if (fDrawList.count()) {
        for (SkActive** activePtr = fActiveList.begin(); activePtr < fActiveList.end(); activePtr++) {
            SkActive* active = *activePtr;
            active->reset();
        }
        for (int index = 0; index < fDrawList.count(); index++) {
            SkDrawable* draw = fDrawList[index];
            draw->initialize(); // allow matrices to reset themselves
            SkASSERT(draw->isDrawable());
            validate();
            result |= draw->draw(maker);
        }
    }
    validate();
    return result;
}

void SkGroup::validate() {
    for (SkDrawable** ptr = fChildren.begin(); ptr < fChildren.end(); ptr++) {
        SkDrawable* drawable = *ptr;
        drawable->validate();
    }
}