/*
 * Copyright 2006-2014 Haiku, Inc. All rights reserved.
 * Distributed under the terms of the MIT License.
 */
#ifndef _LAYOUT_UTILS_H
#define _LAYOUT_UTILS_H


#include <Alignment.h>
#include <Rect.h>
#include <Size.h>
#include <String.h>


class BLayoutItem;
class BView;


class BLayoutUtils {
public:
//      static  float                           AddSizesFloat(float a, float b);
//      static  float                           AddSizesFloat(float a, float b, float c);
        static  float                           AddDistances(float a, float b);
        static  float                           AddDistances(float a, float b, float c);
        static  int32                           AddSizesInt32(int32 a, int32 b);
        static  int32                           AddSizesInt32(int32 a, int32 b, int32 c);
//      static  float                           SubtractSizesFloat(float a, float b);
        static  int32                           SubtractSizesInt32(int32 a, int32 b);
        static  float                           SubtractDistances(float a, float b);

        static  void                            FixSizeConstraints(float& min, float& max,
                                                                        float& preferred);
        static  void                            FixSizeConstraints(BSize& min, BSize& max,
                                                                        BSize& preferred);

        static  BSize                           ComposeSize(BSize size, BSize layoutSize);
        static  BAlignment                      ComposeAlignment(BAlignment alignment,
                                                                        BAlignment layoutAlignment);

        static  BRect                           AlignInFrame(BRect frame, BSize maxSize,
                                                                        BAlignment alignment);
        static  void                            AlignInFrame(BView* view, BRect frame);
        static  BRect                           AlignOnRect(BRect rect, BSize size, BAlignment alignment);
        static  BRect                           MoveIntoFrame(BRect rect, BSize frameSize);

        // debugging
        static  BString                         GetLayoutTreeDump(BView* view);
        static  BString                         GetLayoutTreeDump(BLayoutItem* item);

private:
        static  void                            _GetLayoutTreeDump(BView* view, int level,
                                                                        BString& _output);
        static  void                            _GetLayoutTreeDump(BLayoutItem* item,
                                                                        int level, bool isViewLayout,
                                                                        BString& _output);
};

#endif  //      _LAYOUT_UTILS_H