headers/os/interface/LayoutUtils.h

   1 /*
   2  * Copyright 2006-2014 Haiku, Inc. All rights reserved.
   3  * Distributed under the terms of the MIT License.
   4  */
   5 #ifndef _LAYOUT_UTILS_H
   6 #define _LAYOUT_UTILS_H
   7
   8
   9 #include <Alignment.h>
  10 #include <Rect.h>
  11 #include <Size.h>
  12 #include <String.h>
  13
  14
  15 class BLayoutItem;
  16 class BView;
  17
  18
  19 class BLayoutUtils {
  20 public:
  21 //      static  float                           AddSizesFloat(float a, float b);
  22 //      static  float                           AddSizesFloat(float a, float b, float c);
  23         static  float                           AddDistances(float a, float b);
  24         static  float                           AddDistances(float a, float b, float c);
  25         static  int32                           AddSizesInt32(int32 a, int32 b);
  26         static  int32                           AddSizesInt32(int32 a, int32 b, int32 c);
  27 //      static  float                           SubtractSizesFloat(float a, float b);
  28         static  int32                           SubtractSizesInt32(int32 a, int32 b);
  29         static  float                           SubtractDistances(float a, float b);
  30
  31         static  void                            FixSizeConstraints(float& min, float& max,
  32                                                                         float& preferred);
  33         static  void                            FixSizeConstraints(BSize& min, BSize& max,
  34                                                                         BSize& preferred);
  35
  36         static  BSize                           ComposeSize(BSize size, BSize layoutSize);
  37         static  BAlignment                      ComposeAlignment(BAlignment alignment,
  38                                                                         BAlignment layoutAlignment);
  39
  40         static  BRect                           AlignInFrame(BRect frame, BSize maxSize,
  41                                                                         BAlignment alignment);
  42         static  void                            AlignInFrame(BView* view, BRect frame);
  43         static  BRect                           AlignOnRect(BRect rect, BSize size, BAlignment alignment);
  44         static  BRect                           MoveIntoFrame(BRect rect, BSize frameSize);
  45
  46         // debugging
  47         static  BString                         GetLayoutTreeDump(BView* view);
  48         static  BString                         GetLayoutTreeDump(BLayoutItem* item);
  49
  50 private:
  51         static  void                            _GetLayoutTreeDump(BView* view, int level,
  52                                                                         BString& _output);
  53         static  void                            _GetLayoutTreeDump(BLayoutItem* item,
  54                                                                         int level, bool isViewLayout,
  55                                                                         BString& _output);
  56 };
  57
  58 #endif  //      _LAYOUT_UTILS_H