git subrepo clone --branch=sono6good https://github.com/essej/JUCE.git deps/juce

subrepo:
  subdir:   "deps/juce"
  merged:   "b13f9084e"
upstream:
  origin:   "https://github.com/essej/JUCE.git"
  branch:   "sono6good"
  commit:   "b13f9084e"
git-subrepo:
  version:  "0.4.3"
  origin:   "https://github.com/ingydotnet/git-subrepo.git"
  commit:   "2f68596"

deps/juce/modules/juce_gui_basics/layout/juce_ComponentMovementWatcher.cpp

@@ -0,0 +1,142 @@
+/*
+  ==============================================================================
+
+   This file is part of the JUCE library.
+   Copyright (c) 2020 - Raw Material Software Limited
+
+   JUCE is an open source library subject to commercial or open-source
+   licensing.
+
+   By using JUCE, you agree to the terms of both the JUCE 6 End-User License
+   Agreement and JUCE Privacy Policy (both effective as of the 16th June 2020).
+
+   End User License Agreement: www.juce.com/juce-6-licence
+   Privacy Policy: www.juce.com/juce-privacy-policy
+
+   Or: You may also use this code under the terms of the GPL v3 (see
+   www.gnu.org/licenses).
+
+   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