qquickv4particledata.cpp

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// Copyright (C) 2016 The Qt Company Ltd.
// SPDX-License-Identifier: LicenseRef-Qt-Commercial OR LGPL-3.0-only OR GPL-2.0-only OR GPL-3.0-only
 
#include <math.h>
#include "qquickv4particledata_p.h"
#include "qquickparticlesystem_p.h"//for QQuickParticleData
#include <QDebug>
#include <private/qv4engine_p.h>
#include <private/qv4functionobject_p.h>
#include <QtCore/private/qnumeric_p.h>
 
QT_BEGIN_NAMESPACE
 
namespace QV4 {
namespace Heap {
struct QV4ParticleData : QV4::Object::Data {
    void init(QQuickParticleData *datum, QQuickParticleSystem* particleSystem)
    {
        Object::init();
        this->datum = datum;
        this->particleSystem = particleSystem;
    }
    QQuickParticleData* datum;//TODO: Guard needed?
    QQuickParticleSystem* particleSystem;
};
}
}
 
//### Particle data handles are not locked to within certain scopes like QQuickContext2D, but there's no way to reload either...
struct QV4ParticleData : public QV4::Object
{
    V4_OBJECT2(QV4ParticleData, QV4::Object)
};
 
DEFINE_OBJECT_VTABLE(QV4ParticleData);
 
class QV4ParticleDataDeletable : public QV4::ExecutionEngine::Deletable
{
public:
    QV4ParticleDataDeletable(QV4::ExecutionEngine *engine);
    ~QV4ParticleDataDeletable() override;
 
    QV4::PersistentValue proto;
};
 
static QV4::ReturnedValue particleData_discard(const QV4::FunctionObject *b, const QV4::Value *thisObject, const QV4::Value *, int)
{
    QV4::Scope scope(b);
    QV4::Scoped<QV4ParticleData> r(scope, *thisObject);
 
    if (!r || !r->d()->datum)
        RETURN_RESULT(scope.engine->throwError(QStringLiteral("Not a valid ParticleData object")));
 
    r->d()->datum->lifeSpan = 0; //Don't kill(), because it could still be in the middle of being created
    RETURN_RESULT(QV4::Encode::undefined());
}
 
static QV4::ReturnedValue particleData_lifeLeft(const QV4::FunctionObject *b, const QV4::Value *thisObject, const QV4::Value *, int)
{
    QV4::Scope scope(b);
    QV4::Scoped<QV4ParticleData> r(scope, *thisObject);
 
    if (!r || !r->d()->datum)
        RETURN_RESULT(scope.engine->throwError(QStringLiteral("Not a valid ParticleData object")));
 
    RETURN_RESULT(QV4::Encode(r->d()->datum->lifeLeft(r->d()->particleSystem)));
}
 
static QV4::ReturnedValue particleData_curSize(const QV4::FunctionObject *b, const QV4::Value *thisObject, const QV4::Value *, int)
{
    QV4::Scope scope(b);
    QV4::Scoped<QV4ParticleData> r(scope, *thisObject);
 
    if (!r || !r->d()->datum)
        RETURN_RESULT(scope.engine->throwError(QStringLiteral("Not a valid ParticleData object")));
 
    RETURN_RESULT(QV4::Encode(r->d()->datum->curSize(r->d()->particleSystem)));
}
#define COLOR_GETTER_AND_SETTER(VAR, NAME) static QV4::ReturnedValue particleData_get_ ## NAME (const QV4::FunctionObject *b, const QV4::Value *thisObject, const QV4::Value *, int) \
{ \
    QV4::Scope scope(b); \
    QV4::Scoped<QV4ParticleData> r(scope, *thisObject); \
    if (!r || !r->d()->datum) \
        RETURN_RESULT(scope.engine->throwError(QStringLiteral("Not a valid ParticleData object"))); \
\
    RETURN_RESULT(QV4::Encode((r->d()->datum->color. VAR )/255.0));\
}\
\
static QV4::ReturnedValue particleData_set_ ## NAME (const QV4::FunctionObject *b, const QV4::Value *thisObject, const QV4::Value *argv, int argc)\
{\
    QV4::Scope scope(b); \
    QV4::Scoped<QV4ParticleData> r(scope, *thisObject); \
    if (!r || !r->d()->datum)\
        RETURN_RESULT(scope.engine->throwError(QStringLiteral("Not a valid ParticleData object")));\
\
    double d = argc ? argv[0].toNumber() : 0; \
    r->d()->datum->color. VAR = qMin(255, qMax(0, (int)::floor(d * 255.0)));\
    RETURN_UNDEFINED(); \
}
 
 
#define SEMIBOOL_GETTER_AND_SETTER(VARIABLE) static QV4::ReturnedValue particleData_get_ ## VARIABLE (const QV4::FunctionObject *b, const QV4::Value *thisObject, const QV4::Value *, int) \
{ \
    QV4::Scope scope(b); \
    QV4::Scoped<QV4ParticleData> r(scope, *thisObject); \
    if (!r || !r->d()->datum) \
        RETURN_RESULT(scope.engine->throwError(QStringLiteral("Not a valid ParticleData object"))); \
\
    RETURN_RESULT(QV4::Encode(r->d()->datum-> VARIABLE));\
}\
\
static QV4::ReturnedValue particleData_set_ ## VARIABLE (const QV4::FunctionObject *b, const QV4::Value *thisObject, const QV4::Value *argv, int argc)\
{\
    QV4::Scope scope(b); \
    QV4::Scoped<QV4ParticleData> r(scope, *thisObject); \
    if (!r || !r->d()->datum)\
        RETURN_RESULT(scope.engine->throwError(QStringLiteral("Not a valid ParticleData object")));\
\
    r->d()->datum-> VARIABLE = (argc && argv[0].toBoolean()) ? 1.0 : 0.0;\
    RETURN_UNDEFINED(); \
}
 
#define FLOAT_GETTER_AND_SETTER(VARIABLE) static QV4::ReturnedValue particleData_get_ ## VARIABLE (const QV4::FunctionObject *b, const QV4::Value *thisObject, const QV4::Value *, int) \
{ \
    QV4::Scope scope(b); \
    QV4::Scoped<QV4ParticleData> r(scope, *thisObject); \
    if (!r || !r->d()->datum) \
        RETURN_RESULT(scope.engine->throwError(QStringLiteral("Not a valid ParticleData object"))); \
\
    RETURN_RESULT(QV4::Encode(r->d()->datum-> VARIABLE));\
}\
\
static QV4::ReturnedValue particleData_set_ ## VARIABLE (const QV4::FunctionObject *b, const QV4::Value *thisObject, const QV4::Value *argv, int argc)\
{\
    QV4::Scope scope(b); \
    QV4::Scoped<QV4ParticleData> r(scope, *thisObject); \
    if (!r || !r->d()->datum)\
        RETURN_RESULT(scope.engine->throwError(QStringLiteral("Not a valid ParticleData object")));\
\
    r->d()->datum-> VARIABLE = argc ? argv[0].toNumber() : qt_qnan();\
    RETURN_UNDEFINED(); \
}
 
#define FAKE_FLOAT_GETTER_AND_SETTER(VARIABLE, GETTER, SETTER) static QV4::ReturnedValue particleData_get_ ## VARIABLE (const QV4::FunctionObject *b, const QV4::Value *thisObject, const QV4::Value *, int) \
{ \
    QV4::Scope scope(b); \
    QV4::Scoped<QV4ParticleData> r(scope, *thisObject); \
    if (!r || !r->d()->datum) \
        RETURN_RESULT(scope.engine->throwError(QStringLiteral("Not a valid ParticleData object"))); \
\
    RETURN_RESULT(QV4::Encode(r->d()->datum-> GETTER (r->d()->particleSystem)));\
}\
\
static QV4::ReturnedValue particleData_set_ ## VARIABLE (const QV4::FunctionObject *b, const QV4::Value *thisObject, const QV4::Value *argv, int argc)\
{\
    QV4::Scope scope(b); \
    QV4::Scoped<QV4ParticleData> r(scope, *thisObject); \
    if (!r || !r->d()->datum)\
        RETURN_RESULT(scope.engine->throwError(QStringLiteral("Not a valid ParticleData object")));\
\
    r->d()->datum-> SETTER (argc ? argv[0].toNumber() : qt_qnan(), r->d()->particleSystem);\
    RETURN_UNDEFINED(); \
}
 
#define REGISTER_ACCESSOR(PROTO, ENGINE, VARIABLE, NAME) \
    PROTO ->defineAccessorProperty( QStringLiteral( #NAME ), particleData_get_ ## VARIABLE , particleData_set_ ## VARIABLE )
 
COLOR_GETTER_AND_SETTER(r, red)
COLOR_GETTER_AND_SETTER(g, green)
COLOR_GETTER_AND_SETTER(b, blue)
COLOR_GETTER_AND_SETTER(a, alpha)
SEMIBOOL_GETTER_AND_SETTER(autoRotate)
SEMIBOOL_GETTER_AND_SETTER(update)
FLOAT_GETTER_AND_SETTER(x)
FLOAT_GETTER_AND_SETTER(y)
FLOAT_GETTER_AND_SETTER(t)
FLOAT_GETTER_AND_SETTER(lifeSpan)
FLOAT_GETTER_AND_SETTER(size)
FLOAT_GETTER_AND_SETTER(endSize)
FLOAT_GETTER_AND_SETTER(vx)
FLOAT_GETTER_AND_SETTER(vy)
FLOAT_GETTER_AND_SETTER(ax)
FLOAT_GETTER_AND_SETTER(ay)
FLOAT_GETTER_AND_SETTER(xx)
FLOAT_GETTER_AND_SETTER(xy)
FLOAT_GETTER_AND_SETTER(yx)
FLOAT_GETTER_AND_SETTER(yy)
FLOAT_GETTER_AND_SETTER(rotation)
FLOAT_GETTER_AND_SETTER(rotationVelocity)
FLOAT_GETTER_AND_SETTER(animIdx)
FLOAT_GETTER_AND_SETTER(frameDuration)
FLOAT_GETTER_AND_SETTER(frameAt)
FLOAT_GETTER_AND_SETTER(frameCount)
FLOAT_GETTER_AND_SETTER(animT)
FAKE_FLOAT_GETTER_AND_SETTER(curX, curX, setInstantaneousX)
FAKE_FLOAT_GETTER_AND_SETTER(curVX, curVX, setInstantaneousVX)
FAKE_FLOAT_GETTER_AND_SETTER(curAX, curAX, setInstantaneousAX)
FAKE_FLOAT_GETTER_AND_SETTER(curY, curY, setInstantaneousY)
FAKE_FLOAT_GETTER_AND_SETTER(curVY, curVY, setInstantaneousVY)
FAKE_FLOAT_GETTER_AND_SETTER(curAY, curAY, setInstantaneousAY)
 
QV4ParticleDataDeletable::QV4ParticleDataDeletable(QV4::ExecutionEngine *v4)
{
    QV4::Scope scope(v4);
    QV4::ScopedObject p(scope, v4->newObject());
 
    p->defineDefaultProperty(QStringLiteral("discard"), particleData_discard);
    p->defineDefaultProperty(QStringLiteral("lifeLeft"), particleData_lifeLeft);
    p->defineDefaultProperty(QStringLiteral("currentSize"), particleData_curSize);
 
    REGISTER_ACCESSOR(p, v4, x, initialX);
    REGISTER_ACCESSOR(p, v4, y, initialY);
    REGISTER_ACCESSOR(p, v4, t, t);
    REGISTER_ACCESSOR(p, v4, lifeSpan, lifeSpan);
    REGISTER_ACCESSOR(p, v4, size, startSize);
    REGISTER_ACCESSOR(p, v4, endSize, endSize);
    REGISTER_ACCESSOR(p, v4, vx, initialVX);
    REGISTER_ACCESSOR(p, v4, vy, initialVY);
    REGISTER_ACCESSOR(p, v4, ax, initialAX);
    REGISTER_ACCESSOR(p, v4, ay, initialAY);
    REGISTER_ACCESSOR(p, v4, xx, xDeformationVectorX);
    REGISTER_ACCESSOR(p, v4, xy, xDeformationVectorY);
    REGISTER_ACCESSOR(p, v4, yx, yDeformationVectorX);
    REGISTER_ACCESSOR(p, v4, yy, yDeformationVectorY);
    REGISTER_ACCESSOR(p, v4, rotation, rotation);
    REGISTER_ACCESSOR(p, v4, rotationVelocity, rotationVelocity);
    REGISTER_ACCESSOR(p, v4, autoRotate, autoRotate);
    REGISTER_ACCESSOR(p, v4, animIdx, animationIndex);
    REGISTER_ACCESSOR(p, v4, frameDuration, frameDuration);
    REGISTER_ACCESSOR(p, v4, frameAt, frameAt);
    REGISTER_ACCESSOR(p, v4, frameCount, frameCount);
    REGISTER_ACCESSOR(p, v4, animT, animationT);
    REGISTER_ACCESSOR(p, v4, update, update);
    REGISTER_ACCESSOR(p, v4, curX, x);
    REGISTER_ACCESSOR(p, v4, curVX, vx);
    REGISTER_ACCESSOR(p, v4, curAX, ax);
    REGISTER_ACCESSOR(p, v4, curY, y);
    REGISTER_ACCESSOR(p, v4, curVY, vy);
    REGISTER_ACCESSOR(p, v4, curAY, ay);
    REGISTER_ACCESSOR(p, v4, red, red);
    REGISTER_ACCESSOR(p, v4, green, green);
    REGISTER_ACCESSOR(p, v4, blue, blue);
    REGISTER_ACCESSOR(p, v4, alpha, alpha);
 
    proto = p;
}
 
QV4ParticleDataDeletable::~QV4ParticleDataDeletable()
{
}
 
V4_DEFINE_EXTENSION(QV4ParticleDataDeletable, particleV4Data);
 
 
QQuickV4ParticleData::QQuickV4ParticleData(QV4::ExecutionEngine* v4, QQuickParticleData* datum,
                                           QQuickParticleSystem *system)
{
    if (!v4 || !datum)
        return;
 
    QV4::Scope scope(v4);
    QV4ParticleDataDeletable *d = particleV4Data(scope.engine);
    QV4::ScopedObject o(scope, v4->memoryManager->allocate<QV4ParticleData>(datum, system));
    QV4::ScopedObject p(scope, d->proto.value());
    o->setPrototypeUnchecked(p);
    m_v4Value = o;
}
 
QQuickV4ParticleData::~QQuickV4ParticleData()
{
}
 
QV4::ReturnedValue QQuickV4ParticleData::v4Value() const
{
    return m_v4Value.value();
}
 
QT_END_NAMESPACE