fix macOS build (following Projucer changes made in Windows, which removed /Applications/JUCE/modules from its headers). move JUCE headers under source control, so that Windows and macOS can both build against same version of JUCE. remove AUv3 target (I think it's an iOS thing, so it will never work with this macOS fluidsynth dylib).

modules/juce_gui_basics/drawables/juce_DrawableComposite.h

@@ -0,0 +1,118 @@
+/*
+  ==============================================================================
+
+   This file is part of the JUCE library.
+   Copyright (c) 2017 - ROLI Ltd.
+
+   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 5 End-User License
+   Agreement and JUCE 5 Privacy Policy (both updated and effective as of the
+   27th April 2017).
+
+   End User License Agreement: www.juce.com/juce-5-licence
+   Privacy Policy: www.juce.com/juce-5-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
+{
+
+//==============================================================================
+/**
+    A drawable object which acts as a container for a set of other Drawables.
+
+    Note that although this is a Component, it takes ownership of its child components
+    and will delete them, so that you can use it as a self-contained graphic object.
+    The intention is that you should not add your own components to it, only add other
+    Drawable objects.
+
+    @see Drawable
+
+    @tags{GUI}
+*/
+class JUCE_API  DrawableComposite  : public Drawable
+{
+public:
+    //==============================================================================
+    /** Creates a composite Drawable. */
+    DrawableComposite();
+
+    /** Creates a copy of a DrawableComposite. */
+    DrawableComposite (const DrawableComposite&);
+
+    /** Destructor. */
+    ~DrawableComposite();
+
+    //==============================================================================
+    /** Sets the parallelogram that defines the target position of the content rectangle when the drawable is rendered.
+        @see setContentArea
+    */
+    void setBoundingBox (Parallelogram<float> newBoundingBox);
+
+    /** Sets the rectangle that defines the target position of the content rectangle when the drawable is rendered.
+        @see setContentArea
+    */
+    void setBoundingBox (Rectangle<float> newBoundingBox);
+
+    /** Returns the parallelogram that defines the target position of the content rectangle when the drawable is rendered.
+        @see setBoundingBox
+    */
+    Parallelogram<float> getBoundingBox() const noexcept            { return bounds; }
+
+    /** Changes the bounding box transform to match the content area, so that any sub-items will
+        be drawn at their untransformed positions.
+    */
+    void resetBoundingBoxToContentArea();
+
+    /** Returns the main content rectangle.
+        @see contentLeftMarkerName, contentRightMarkerName, contentTopMarkerName, contentBottomMarkerName
+    */
+    Rectangle<float> getContentArea() const noexcept                { return contentArea; }
+
+    /** Changes the main content area.
+        @see setBoundingBox, contentLeftMarkerName, contentRightMarkerName, contentTopMarkerName, contentBottomMarkerName
+    */
+    void setContentArea (Rectangle<float> newArea);
+
+    /** Resets the content area and the bounding transform to fit around the area occupied
+        by the child components.
+    */
+    void resetContentAreaAndBoundingBoxToFitChildren();
+
+    //==============================================================================
+    /** @internal */
+    Drawable* createCopy() const override;
+    /** @internal */
+    Rectangle<float> getDrawableBounds() const override;
+    /** @internal */
+    void childBoundsChanged (Component*) override;
+    /** @internal */
+    void childrenChanged() override;
+    /** @internal */
+    void parentHierarchyChanged() override;
+    /** @internal */
+    Path getOutlineAsPath() const override;
+
+private:
+    //==============================================================================
+    Parallelogram<float> bounds;
+    Rectangle<float> contentArea;
+    bool updateBoundsReentrant = false;
+
+    void updateBoundsToFitChildren();
+
+    DrawableComposite& operator= (const DrawableComposite&);
+    JUCE_LEAK_DETECTOR (DrawableComposite)
+};
+
+} // namespace juce