src/apps/cortex/ValControl/ValCtrlLayoutEntry.h

   1 /*
   2  * Copyright (c) 1999-2000, Eric Moon.
   3  * All rights reserved.
   4  *
   5  * Redistribution and use in source and binary forms, with or without
   6  * modification, are permitted provided that the following conditions
   7  * are met:
   8  *
   9  * 1. Redistributions of source code must retain the above copyright
  10  *    notice, this list of conditions, and the following disclaimer.
  11  *
  12  * 2. Redistributions in binary form must reproduce the above copyright
  13  *    notice, this list of conditions, and the following disclaimer in the
  14  *    documentation and/or other materials provided with the distribution.
  15  *
  16  * 3. The name of the author may not be used to endorse or promote products
  17  *    derived from this software without specific prior written permission.
  18  *
  19  * THIS SOFTWARE IS PROVIDED BY THE AUTHOR "AS IS" AND ANY EXPRESS OR
  20  * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
  21  * OF TITLE, NON-INFRINGEMENT, MERCHANTABILITY AND FITNESS FOR A PARTICULAR
  22  * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY
  23  * DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
  24  * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
  25  * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
  26  * AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR
  27  * TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
  28  * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
  29  */
  30
  31
  32 // ValCtrlValCtrlLayoutEntry.h
  33 // +++++ cortex integration 23aug99:
  34 //       hide this class!
  35 //
  36 // e.moon 28jan99
  37 #ifndef VAL_CTRL_LAYOUT_ENTRY_H
  38 #define VAL_CTRL_LAYOUT_ENTRY_H
  39
  40
  41 #include "cortex_defs.h"
  42
  43 #include <View.h>
  44
  45
  46 __BEGIN_CORTEX_NAMESPACE
  47
  48 // a ValCtrlLayoutEntry manages the layout state information for
  49 // a single child view
  50
  51 class ValCtrlLayoutEntry {
  52         public:
  53                 friend class ValControl;
  54
  55         public: // static instances
  56                 static ValCtrlLayoutEntry decimalPoint;
  57
  58         public:
  59                 enum entry_type {
  60                         SEGMENT_ENTRY,
  61                         VIEW_ENTRY,
  62                         DECIMAL_POINT_ENTRY
  63                 };
  64
  65                 enum layout_flags {
  66                         LAYOUT_NONE     = 0,
  67                         LAYOUT_NO_PADDING = 1,  // disables left/right padding
  68                 };
  69
  70         public:
  71                 ValCtrlLayoutEntry() {}
  72                         // stl compatibility ctor
  73
  74                 // standard: yes, the frame is left invalid; that's for
  75                 // ValControl::insertEntry() to fix
  76                 ValCtrlLayoutEntry(BView* _pView, entry_type t,
  77                         layout_flags f = LAYOUT_NONE)
  78                         :
  79                         pView(_pView),
  80                         type(t),
  81                         flags(f),
  82                         fPadding(0.0)
  83                         {}
  84
  85                 ValCtrlLayoutEntry(entry_type t, layout_flags f = LAYOUT_NONE)
  86                         :
  87                         pView(0),
  88                         type(t),
  89                         flags(f),
  90                         fPadding(0.0)
  91                         {}
  92
  93                 ValCtrlLayoutEntry(const ValCtrlLayoutEntry& clone) {
  94                         operator=(clone);
  95                 }
  96
  97                 ValCtrlLayoutEntry& operator=(const ValCtrlLayoutEntry& clone) {
  98                         type = clone.type;
  99                         flags = clone.flags;
 100                         pView = clone.pView;
 101
 102                         frame = clone.frame;
 103                         fPadding = clone.fPadding;
 104                         return *this;
 105                 }
 106
 107                 // order first by x position, then by y:
 108                 bool operator<(const ValCtrlLayoutEntry& b) const {
 109                         return frame.left < b.frame.left ||
 110                                 frame.top < b.frame.top;
 111                 }
 112
 113         protected:
 114                 // move & size ref'd child view to match 'frame'
 115                 static void InitChildFrame(ValCtrlLayoutEntry& e);
 116
 117         public:
 118                 BView* pView;
 119
 120                 entry_type type;
 121                 layout_flags flags;
 122
 123                 // layout state info (filled in by ValControl):
 124                 BRect frame;
 125                 float fPadding;
 126 };
 127
 128 __END_CORTEX_NAMESPACE
 129 #endif  // VAL_CTRL_LAYOUT_ENTRY_H