mirror of
https://github.com/juce-framework/JUCE.git
synced 2026-01-11 23:54:18 +00:00
135 lines
3.7 KiB
C++
135 lines
3.7 KiB
C++
/*
|
|
==============================================================================
|
|
|
|
This file is part of the JUCE 6 technical preview.
|
|
Copyright (c) 2020 - Raw Material Software Limited
|
|
|
|
You may use this code under the terms of the GPL v3
|
|
(see www.gnu.org/licenses).
|
|
|
|
For this technical preview, this file is not subject to commercial licensing.
|
|
|
|
JUCE IS PROVIDED "AS IS" WITHOUT ANY WARRANTY, AND ALL WARRANTIES, WHETHER
|
|
EXPRESSED OR IMPLIED, INCLUDING MERCHANTABILITY AND FITNESS FOR PURPOSE, ARE
|
|
DISCLAIMED.
|
|
|
|
==============================================================================
|
|
*/
|
|
|
|
namespace juce
|
|
{
|
|
|
|
ComponentMovementWatcher::ComponentMovementWatcher (Component* const comp)
|
|
: component (comp),
|
|
wasShowing (comp->isShowing())
|
|
{
|
|
jassert (component != nullptr); // can't use this with a null pointer..
|
|
|
|
component->addComponentListener (this);
|
|
registerWithParentComps();
|
|
}
|
|
|
|
ComponentMovementWatcher::~ComponentMovementWatcher()
|
|
{
|
|
if (component != nullptr)
|
|
component->removeComponentListener (this);
|
|
|
|
unregister();
|
|
}
|
|
|
|
//==============================================================================
|
|
void ComponentMovementWatcher::componentParentHierarchyChanged (Component&)
|
|
{
|
|
if (component != nullptr && ! reentrant)
|
|
{
|
|
const ScopedValueSetter<bool> setter (reentrant, true);
|
|
|
|
auto* peer = component->getPeer();
|
|
auto peerID = peer != nullptr ? peer->getUniqueID() : 0;
|
|
|
|
if (peerID != lastPeerID)
|
|
{
|
|
componentPeerChanged();
|
|
|
|
if (component == nullptr)
|
|
return;
|
|
|
|
lastPeerID = peerID;
|
|
}
|
|
|
|
unregister();
|
|
registerWithParentComps();
|
|
|
|
componentMovedOrResized (*component, true, true);
|
|
|
|
if (component != nullptr)
|
|
componentVisibilityChanged (*component);
|
|
}
|
|
}
|
|
|
|
void ComponentMovementWatcher::componentMovedOrResized (Component&, bool wasMoved, bool wasResized)
|
|
{
|
|
if (component != nullptr)
|
|
{
|
|
if (wasMoved)
|
|
{
|
|
Point<int> newPos;
|
|
auto* top = component->getTopLevelComponent();
|
|
|
|
if (top != component)
|
|
newPos = top->getLocalPoint (component, Point<int>());
|
|
else
|
|
newPos = top->getPosition();
|
|
|
|
wasMoved = lastBounds.getPosition() != newPos;
|
|
lastBounds.setPosition (newPos);
|
|
}
|
|
|
|
wasResized = (lastBounds.getWidth() != component->getWidth() || lastBounds.getHeight() != component->getHeight());
|
|
lastBounds.setSize (component->getWidth(), component->getHeight());
|
|
|
|
if (wasMoved || wasResized)
|
|
componentMovedOrResized (wasMoved, wasResized);
|
|
}
|
|
}
|
|
|
|
void ComponentMovementWatcher::componentBeingDeleted (Component& comp)
|
|
{
|
|
registeredParentComps.removeFirstMatchingValue (&comp);
|
|
|
|
if (component == &comp)
|
|
unregister();
|
|
}
|
|
|
|
void ComponentMovementWatcher::componentVisibilityChanged (Component&)
|
|
{
|
|
if (component != nullptr)
|
|
{
|
|
const bool isShowingNow = component->isShowing();
|
|
|
|
if (wasShowing != isShowingNow)
|
|
{
|
|
wasShowing = isShowingNow;
|
|
componentVisibilityChanged();
|
|
}
|
|
}
|
|
}
|
|
|
|
void ComponentMovementWatcher::registerWithParentComps()
|
|
{
|
|
for (auto* p = component->getParentComponent(); p != nullptr; p = p->getParentComponent())
|
|
{
|
|
p->addComponentListener (this);
|
|
registeredParentComps.add (p);
|
|
}
|
|
}
|
|
|
|
void ComponentMovementWatcher::unregister()
|
|
{
|
|
for (auto* c : registeredParentComps)
|
|
c->removeComponentListener (this);
|
|
|
|
registeredParentComps.clear();
|
|
}
|
|
|
|
} // namespace juce
|