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Improved Source Callback for multi-callbacks compatibility

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This commit is contained in:
Bruno Herbelin
2022-02-07 17:45:34 +01:00
parent 6cf86d80e2
commit 741afaea18
4 changed files with 69 additions and 29 deletions
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44
SourceCallback.cpp
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@@ -67,7 +67,49 @@ SourceCallback *SourceCallback::create(CallbackType type)
return loadedcallback;
}
SourceCallback::SourceCallback(): active_(true), finished_(false), initialized_(false)
bool SourceCallback::overlap( SourceCallback *a, SourceCallback *b)
{
bool ret = false;
if (a->type() == b->type()) {
// same type means overlap
ret = true;
// but there are some exceptions..
switch (a->type()) {
case SourceCallback::CALLBACK_GRAB:
{
const Grab *_a = static_cast<Grab*>(a);
const Grab *_b = static_cast<Grab*>(b);
// there is no overlap if the X or Y of a vector is zero
if ( ABS(_a->value().x) < EPSILON || ABS(_b->value().x) < EPSILON )
ret = false;
else if ( ABS(_a->value().y) < EPSILON || ABS(_b->value().y) < EPSILON )
ret = false;
}
break;
case SourceCallback::CALLBACK_RESIZE:
{
const Resize *_a = static_cast<Resize*>(a);
const Resize *_b = static_cast<Resize*>(b);
if ( ABS(_a->value().x) < EPSILON || ABS(_b->value().x) < EPSILON )
ret = false;
else if ( ABS(_a->value().y) < EPSILON || ABS(_b->value().y) < EPSILON )
ret = false;
}
break;
default:
break;
}
}
return ret;
}
SourceCallback::SourceCallback(): finished_(false), initialized_(false)
{
}