juce_ComponentBoundsConstrainer.h

Go to the documentation of this file.

/*
  ==============================================================================

   This file is part of the JUCE library - "Jules' Utility Class Extensions"
   Copyright 2004-7 by Raw Material Software ltd.

  ------------------------------------------------------------------------------

   JUCE can be redistributed and/or modified under the terms of the
   GNU General Public License, as published by the Free Software Foundation;
   either version 2 of the License, or (at your option) any later version.

   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.

   You should have received a copy of the GNU General Public License
   along with JUCE; if not, visit www.gnu.org/licenses or write to the
   Free Software Foundation, Inc., 59 Temple Place, Suite 330,
   Boston, MA 02111-1307 USA

  ------------------------------------------------------------------------------

   If you'd like to release a closed-source product which uses JUCE, commercial
   licenses are also available: visit www.rawmaterialsoftware.com/juce for
   more information.

  ==============================================================================
*/

#ifndef __JUCE_COMPONENTBOUNDSCONSTRAINER_JUCEHEADER__
#define __JUCE_COMPONENTBOUNDSCONSTRAINER_JUCEHEADER__

#include "../juce_Component.h"


//==============================================================================
class JUCE_API  ComponentBoundsConstrainer
{
public:
    //==============================================================================
    ComponentBoundsConstrainer() throw();

    virtual ~ComponentBoundsConstrainer();

    //==============================================================================
    void setMinimumWidth (const int minimumWidth) throw();

    int getMinimumWidth() const throw()                         { return minW; }

    void setMaximumWidth (const int maximumWidth) throw();

    int getMaximumWidth() const throw()                         { return maxW; }

    void setMinimumHeight (const int minimumHeight) throw();

    int getMinimumHeight() const throw()                        { return minH; }

    void setMaximumHeight (const int maximumHeight) throw();

    int getMaximumHeight() const throw()                        { return maxH; }

    void setMinimumSize (const int minimumWidth,
                         const int minimumHeight) throw();

    void setMaximumSize (const int maximumWidth,
                         const int maximumHeight) throw();

    void setSizeLimits (const int minimumWidth,
                        const int minimumHeight,
                        const int maximumWidth,
                        const int maximumHeight) throw();

    //==============================================================================
    void setMinimumOnscreenAmounts (const int minimumWhenOffTheTop,
                                    const int minimumWhenOffTheLeft,
                                    const int minimumWhenOffTheBottom,
                                    const int minimumWhenOffTheRight) throw();

    //==============================================================================
    void setFixedAspectRatio (const double widthOverHeight) throw();

    double getFixedAspectRatio() const throw();


    //==============================================================================
    virtual void checkBounds (int& x, int& y, int& w, int& h,
                              const Rectangle& previousBounds,
                              const Rectangle& limits,
                              const bool isStretchingTop,
                              const bool isStretchingLeft,
                              const bool isStretchingBottom,
                              const bool isStretchingRight);

    virtual void resizeStart();

    virtual void resizeEnd();

    void setBoundsForComponent (Component* const component,
                                int x, int y, int w, int h,
                                const bool isStretchingTop,
                                const bool isStretchingLeft,
                                const bool isStretchingBottom,
                                const bool isStretchingRight);

    virtual void applyBoundsToComponent (Component* component,
                                         int x, int y, int w, int h);

    //==============================================================================
    juce_UseDebuggingNewOperator

private:
    int minW, maxW, minH, maxH;
    int minOffTop, minOffLeft, minOffBottom, minOffRight;
    double aspectRatio;

    ComponentBoundsConstrainer (const ComponentBoundsConstrainer&);
    const ComponentBoundsConstrainer& operator= (const ComponentBoundsConstrainer&);
};


#endif   // __JUCE_COMPONENTBOUNDSCONSTRAINER_JUCEHEADER__