pop.type = prop->type;
pop.bindingSkipList = 0;
output->addInstruction(pop);
+
+ genPropertyAssignment(prop, obj);
}
void QQmlCompiler::genComponent(QQmlScript::Object *obj)
if (prop->type >= 0 && enginePrivate->valueTypes[prop->type]) {
if (!prop->values.isEmpty()) {
- if (prop->values.first()->location < prop->value->location) {
- COMPILE_EXCEPTION(prop->value, tr( "Property has already been assigned a value"));
- } else {
- COMPILE_EXCEPTION(prop->values.first(), tr( "Property has already been assigned a value"));
+ // Only error if we are assigning values, and not e.g. a property interceptor
+ for (Property *dotProp = prop->value->properties.first(); dotProp; dotProp = prop->value->properties.next(dotProp)) {
+ if (!dotProp->values.isEmpty()) {
+ if (prop->values.first()->location < prop->value->location) {
+ COMPILE_EXCEPTION(prop->value, tr( "Property has already been assigned a value"));
+ } else {
+ COMPILE_EXCEPTION(prop->values.first(), tr( "Property has already been assigned a value"));
+ }
+ }
}
}
COMPILE_EXCEPTION(prop, tr( "Invalid property assignment: \"%1\" is a read-only property").arg(prop->name().toString()));
}
-
if (prop->isAlias) {
for (Property *vtProp = prop->value->properties.first(); vtProp; vtProp = prop->value->properties.next(vtProp)) {
vtProp->isAlias = true;
COMPILE_CHECK(buildValueTypeProperty(enginePrivate->valueTypes[prop->type],
prop->value, obj, ctxt.incr()));
+
+ // When building a value type where sub components are declared, this
+ // code path is followed from buildProperty, even if there is a previous
+ // assignment to the value type as a whole. Therefore we need to look
+ // for (and build) assignments to the entire value type before looking
+ // for any onValue assignments.
+ for (Value *v = prop->values.first(); v; v = Property::ValueList::next(v)) {
+ if (v->object) {
+ COMPILE_EXCEPTION(v->object, tr("Objects cannot be assigned to value types"));
+ }
+ COMPILE_CHECK(buildPropertyLiteralAssignment(prop, obj, v, ctxt));
+ }
+
+ for (Value *v = prop->onValues.first(); v; v = Property::ValueList::next(v)) {
+ Q_ASSERT(v->object);
+ COMPILE_CHECK(buildPropertyOnAssignment(prop, obj, obj, v, ctxt));
+ }
+
obj->addValueTypeProperty(prop);
+
} else {
COMPILE_EXCEPTION(prop, tr("Invalid grouped property access"));
}
else valueType = QQmlValueTypeFactory::valueType(type);
Q_ASSERT(valueType);
- valueType->setValue(QVariant(type, a[0]));
+ //
+ // Consider the following case:
+ // color c = { 0.1, 0.2, 0.3 }
+ // interceptor exists on c.r
+ // write { 0.2, 0.4, 0.6 }
+ //
+ // The interceptor may choose not to update the r component at this
+ // point (for example, a behavior that creates an animation). But we
+ // need to ensure that the g and b components are updated correctly.
+ //
+ // So we need to perform a full write where the value type is:
+ // r = old value, g = new value, b = new value
+ //
+ // And then call the interceptor which may or may not write the
+ // new value to the r component.
+ //
+ // This will ensure that the other components don't contain stale data
+ // and any relevant signals are emitted.
+ //
+ // To achieve this:
+ // (1) Store the new value type as a whole (needed due to
+ // aliasing between a[0] and static storage in value type).
+ // (2) Read the entire existing value type from object -> valueType temp.
+ // (3) Read the previous value of the component being changed
+ // from the valueType temp.
+ // (4) Write the entire new value type into the temp.
+ // (5) Overwrite the component being changed with the old value.
+ // (6) Perform a full write to the value type (which may emit signals etc).
+ // (7) Issue the interceptor call with the new component value.
+ //
+
QMetaProperty valueProp = valueType->metaObject()->property(valueIndex);
- vi->write(valueProp.read(valueType));
+ QVariant newValue(type, a[0]);
+
+ valueType->read(object, id);
+ QVariant prevComponentValue = valueProp.read(valueType);
+
+ valueType->setValue(newValue);
+ QVariant newComponentValue = valueProp.read(valueType);
+
+ valueProp.write(valueType, prevComponentValue);
+ valueType->write(object, id, QQmlPropertyPrivate::DontRemoveBinding | QQmlPropertyPrivate::BypassInterceptor);
+
+ vi->write(newComponentValue);
if (!ep) delete valueType;
return -1;
--- /dev/null
+import Test 1.0
+
+MyColorObject {
+ color: "#8000FF"
+ MyFloatSetInterceptor on color.r {}
+}
--- /dev/null
+import Test 1.0
+
+MyColorObject {
+ color: "#8000FF"
+ MyFloatIgnoreInterceptor on color.r {}
+}
--- /dev/null
+import Test 1.0
+
+MyColorObject {
+ color.r: 0.1
+ color.g: 0.2
+ color.b: 0.3
+ color.a: 0.4
+
+ MyColorInterceptor on color {}
+}
qmlRegisterType<MyTypeObject>("Test", 1, 0, "MyTypeObject");
qmlRegisterType<MyConstantValueSource>("Test", 1, 0, "MyConstantValueSource");
qmlRegisterType<MyOffsetValueInterceptor>("Test", 1, 0, "MyOffsetValueInterceptor");
+ qmlRegisterType<MyColorObject>("Test", 1, 0, "MyColorObject");
+ qmlRegisterType<MyColorInterceptor>("Test", 1, 0, "MyColorInterceptor");
+ qmlRegisterType<MyFloatSetInterceptor>("Test", 1, 0, "MyFloatSetInterceptor");
+ qmlRegisterType<MyFloatIgnoreInterceptor>("Test", 1, 0, "MyFloatIgnoreInterceptor");
}
QQmlProperty prop;
};
+// This test interceptor deliberately swizzles RGBA -> ABGR
+class MyColorInterceptor : public QObject, public QQmlPropertyValueInterceptor
+{
+ Q_OBJECT
+ Q_INTERFACES(QQmlPropertyValueInterceptor)
+public:
+ virtual void setTarget(const QQmlProperty &p) { prop = p; }
+ virtual void write(const QVariant &v)
+ {
+ QColor c = v.value<QColor>();
+
+ int r, g, b, a;
+ c.getRgb(&r, &g, &b, &a);
+ c.setRgb(a, b, g, r);
+
+ QQmlPropertyPrivate::write(prop, c, QQmlPropertyPrivate::BypassInterceptor);
+ }
+
+private:
+ QQmlProperty prop;
+};
+
+class MyFloatSetInterceptor : public QObject, public QQmlPropertyValueInterceptor
+{
+ Q_OBJECT
+ Q_INTERFACES(QQmlPropertyValueInterceptor)
+public:
+ virtual void setTarget(const QQmlProperty &p) { prop = p; }
+ virtual void write(const QVariant &)
+ {
+ QQmlPropertyPrivate::write(prop, 0.0f, QQmlPropertyPrivate::BypassInterceptor);
+ }
+
+private:
+ QQmlProperty prop;
+};
+
+class MyFloatIgnoreInterceptor : public QObject, public QQmlPropertyValueInterceptor
+{
+ Q_OBJECT
+ Q_INTERFACES(QQmlPropertyValueInterceptor)
+public:
+ virtual void setTarget(const QQmlProperty &) {}
+ virtual void write(const QVariant &) {}
+};
+
+class MyColorObject : public QObject
+{
+ Q_OBJECT
+
+ Q_PROPERTY(QColor color READ color WRITE setColor)
+
+public:
+ MyColorObject() {}
+
+ QColor m_color;
+ QColor color() const { return m_color; }
+ void setColor(const QColor &v) { m_color = v; }
+};
+
void registerTypes();
#endif // TESTTYPES_H
void bindingsSpliceCorrectly();
void nonValueTypeComparison();
void initializeByWrite();
+ void groupedInterceptors();
+ void groupedInterceptors_data();
private:
QQmlEngine engine;
delete object;
}
+void tst_qqmlvaluetypes::groupedInterceptors_data()
+{
+ QTest::addColumn<QString>("qmlfile");
+ QTest::addColumn<QColor>("expectedInitialColor");
+ QTest::addColumn<QColor>("setColor");
+ QTest::addColumn<QColor>("expectedFinalColor");
+
+ QColor c0, c1, c2;
+ c0.setRgbF(0.1f, 0.2f, 0.3f, 0.4f);
+ c1.setRgbF(0.2f, 0.4f, 0.6f, 0.8f);
+ c2.setRgbF(0.8f, 0.6f, 0.4f, 0.2f);
+
+ QTest::newRow("value-interceptor") << QString::fromLatin1("grouped_interceptors_value.qml") << c0 << c1 << c2;
+ QTest::newRow("component-interceptor") << QString::fromLatin1("grouped_interceptors_component.qml") << QColor(128, 0, 255) << QColor(50, 100, 200) << QColor(0, 100, 200);
+ QTest::newRow("ignore-interceptor") << QString::fromLatin1("grouped_interceptors_ignore.qml") << QColor(128, 0, 255) << QColor(50, 100, 200) << QColor(128, 100, 200);
+}
+
+void tst_qqmlvaluetypes::groupedInterceptors()
+{
+ QFETCH(QString, qmlfile);
+ QFETCH(QColor, expectedInitialColor);
+ QFETCH(QColor, setColor);
+ QFETCH(QColor, expectedFinalColor);
+
+ QQmlComponent component(&engine, testFileUrl(qmlfile));
+ QObject *object = component.create();
+ QVERIFY(object != 0);
+
+ QColor initialColor = object->property("color").value<QColor>();
+ QCOMPARE(initialColor, expectedInitialColor);
+
+ object->setProperty("color", setColor);
+
+ QColor finalColor = object->property("color").value<QColor>();
+ QCOMPARE(finalColor, expectedFinalColor);
+
+ delete object;
+}
+
QTEST_MAIN(tst_qqmlvaluetypes)
#include "tst_qqmlvaluetypes.moc"
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