juce_RelativeCoordinatePositioner.h

Go to the documentation of this file.

/*
  ==============================================================================
 
   This file is part of the JUCE library.
   Copyright (c) 2015 - ROLI Ltd.
 
   Permission is granted to use this software under the terms of either:
   a) the GPL v2 (or any later version)
   b) the Affero GPL v3
 
   Details of these licenses can be found at: www.gnu.org/licenses
 
   JUCE is distributed in the hope that it will be useful, but WITHOUT ANY
   WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR
   A PARTICULAR PURPOSE.  See the GNU General Public License for more details.
 
   ------------------------------------------------------------------------------
 
   To release a closed-source product which uses JUCE, commercial licenses are
   available: visit www.juce.com for more information.
 
  ==============================================================================
*/
 
#ifndef JUCE_RELATIVECOORDINATEPOSITIONER_H_INCLUDED
#define JUCE_RELATIVECOORDINATEPOSITIONER_H_INCLUDED
 
 
//==============================================================================
class JUCE_API  RelativeCoordinatePositionerBase  : public Component::Positioner,
                                                    public ComponentListener,
                                                    public MarkerList::Listener
{
public:
    RelativeCoordinatePositionerBase (Component& component);
    ~RelativeCoordinatePositionerBase();
 
    void componentMovedOrResized (Component&, bool, bool);
    void componentParentHierarchyChanged (Component&);
    void componentChildrenChanged (Component& component);
    void componentBeingDeleted (Component& component);
    void markersChanged (MarkerList*);
    void markerListBeingDeleted (MarkerList* markerList);
 
    void apply();
 
    bool addCoordinate (const RelativeCoordinate& coord);
    bool addPoint (const RelativePoint& point);
 
    //==============================================================================
    class ComponentScope  : public Expression::Scope
    {
    public:
        ComponentScope (Component& component);
 
        Expression getSymbolValue (const String& symbol) const;
        void visitRelativeScope (const String& scopeName, Visitor& visitor) const;
        String getScopeUID() const;
 
    protected:
        Component& component;
 
        Component* findSiblingComponent (const String& componentID) const;
 
    private:
        JUCE_DECLARE_NON_COPYABLE (ComponentScope)
    };
 
protected:
    virtual bool registerCoordinates() = 0;
    virtual void applyToComponentBounds() = 0;
 
private:
    class DependencyFinderScope;
    friend class DependencyFinderScope;
    Array <Component*> sourceComponents;
    Array <MarkerList*> sourceMarkerLists;
    bool registeredOk;
 
    void registerComponentListener (Component& comp);
    void registerMarkerListListener (MarkerList* const list);
    void unregisterListeners();
 
    JUCE_DECLARE_NON_COPYABLE_WITH_LEAK_DETECTOR (RelativeCoordinatePositionerBase)
};
 
 
#endif   // JUCE_RELATIVECOORDINATEPOSITIONER_H_INCLUDED