include/wx/layout.h

   1 /////////////////////////////////////////////////////////////////////////////
   2 // Name:        wx/layout.h
   3 // Purpose:     OBSOLETE layout constraint classes, use sizers instead
   4 // Author:      Julian Smart
   5 // Modified by:
   6 // Created:     29/01/98
   7 // RCS-ID:      $Id$
   8 // Copyright:   (c) 1998 Julian Smart
   9 // Licence:     wxWindows licence
  10 /////////////////////////////////////////////////////////////////////////////
  11
  12 #ifndef _WX_LAYOUT_H_
  13 #define _WX_LAYOUT_H_
  14
  15 // ----------------------------------------------------------------------------
  16 // headers
  17 // ----------------------------------------------------------------------------
  18
  19 #include "wx/object.h"
  20
  21 // X stupidly defines these in X.h
  22 #ifdef Above
  23     #undef Above
  24 #endif
  25 #ifdef Below
  26     #undef Below
  27 #endif
  28
  29 #if wxUSE_CONSTRAINTS
  30
  31 // ----------------------------------------------------------------------------
  32 // forward declrations
  33 // ----------------------------------------------------------------------------
  34
  35 class WXDLLEXPORT wxWindowBase;
  36 class WXDLLEXPORT wxLayoutConstraints;
  37
  38 // ----------------------------------------------------------------------------
  39 // constants
  40 // ----------------------------------------------------------------------------
  41
  42 #define wxLAYOUT_DEFAULT_MARGIN 0
  43
  44 enum wxEdge
  45 {
  46     wxLeft, wxTop, wxRight, wxBottom, wxWidth, wxHeight,
  47     wxCentre, wxCenter = wxCentre, wxCentreX, wxCentreY
  48 };
  49
  50 enum wxRelationship
  51 {
  52     wxUnconstrained = 0,
  53     wxAsIs,
  54     wxPercentOf,
  55     wxAbove,
  56     wxBelow,
  57     wxLeftOf,
  58     wxRightOf,
  59     wxSameAs,
  60     wxAbsolute
  61 };
  62
  63 // ----------------------------------------------------------------------------
  64 // wxIndividualLayoutConstraint: a constraint on window position
  65 // ----------------------------------------------------------------------------
  66
  67 class WXDLLEXPORT wxIndividualLayoutConstraint : public wxObject
  68 {
  69 public:
  70     wxIndividualLayoutConstraint();
  71
  72     // note that default copy ctor and assignment operators are ok
  73
  74     ~wxIndividualLayoutConstraint(){}
  75
  76     void Set(wxRelationship rel, wxWindowBase *otherW, wxEdge otherE, int val = 0, int marg = wxLAYOUT_DEFAULT_MARGIN);
  77
  78     //
  79     // Sibling relationships
  80     //
  81     void LeftOf(wxWindowBase *sibling, int marg = wxLAYOUT_DEFAULT_MARGIN);
  82     void RightOf(wxWindowBase *sibling, int marg = wxLAYOUT_DEFAULT_MARGIN);
  83     void Above(wxWindowBase *sibling, int marg = wxLAYOUT_DEFAULT_MARGIN);
  84     void Below(wxWindowBase *sibling, int marg = wxLAYOUT_DEFAULT_MARGIN);
  85
  86     //
  87     // 'Same edge' alignment
  88     //
  89     void SameAs(wxWindowBase *otherW, wxEdge edge, int marg = wxLAYOUT_DEFAULT_MARGIN);
  90
  91     // The edge is a percentage of the other window's edge
  92     void PercentOf(wxWindowBase *otherW, wxEdge wh, int per);
  93
  94     //
  95     // Edge has absolute value
  96     //
  97     void Absolute(int val);
  98
  99     //
 100     // Dimension is unconstrained
 101     //
 102     void Unconstrained() { relationship = wxUnconstrained; }
 103
 104     //
 105     // Dimension is 'as is' (use current size settings)
 106     //
 107     void AsIs() { relationship = wxAsIs; }
 108
 109     //
 110     // Accessors
 111     //
 112     wxWindowBase *GetOtherWindow() { return otherWin; }
 113     wxEdge GetMyEdge() const { return myEdge; }
 114     void SetEdge(wxEdge which) { myEdge = which; }
 115     void SetValue(int v) { value = v; }
 116     int GetMargin() { return margin; }
 117     void SetMargin(int m) { margin = m; }
 118     int GetValue() const { return value; }
 119     int GetPercent() const { return percent; }
 120     int GetOtherEdge() const { return otherEdge; }
 121     bool GetDone() const { return done; }
 122     void SetDone(bool d) { done = d; }
 123     wxRelationship GetRelationship() { return relationship; }
 124     void SetRelationship(wxRelationship r) { relationship = r; }
 125
 126     // Reset constraint if it mentions otherWin
 127     bool ResetIfWin(wxWindowBase *otherW);
 128
 129     // Try to satisfy constraint
 130     bool SatisfyConstraint(wxLayoutConstraints *constraints, wxWindowBase *win);
 131
 132     // Get the value of this edge or dimension, or if this
 133     // is not determinable, -1.
 134     int GetEdge(wxEdge which, wxWindowBase *thisWin, wxWindowBase *other) const;
 135
 136 protected:
 137     // To be allowed to modify the internal variables
 138     friend class wxIndividualLayoutConstraint_Serialize;
 139
 140     // 'This' window is the parent or sibling of otherWin
 141     wxWindowBase *otherWin;
 142
 143     wxEdge myEdge;
 144     wxRelationship relationship;
 145     int margin;
 146     int value;
 147     int percent;
 148     wxEdge otherEdge;
 149     bool done;
 150
 151     DECLARE_DYNAMIC_CLASS(wxIndividualLayoutConstraint)
 152 };
 153
 154 // ----------------------------------------------------------------------------
 155 // wxLayoutConstraints: the complete set of constraints for a window
 156 // ----------------------------------------------------------------------------
 157
 158 class WXDLLEXPORT wxLayoutConstraints : public wxObject
 159 {
 160 public:
 161     // Edge constraints
 162     wxIndividualLayoutConstraint left;
 163     wxIndividualLayoutConstraint top;
 164     wxIndividualLayoutConstraint right;
 165     wxIndividualLayoutConstraint bottom;
 166     // Size constraints
 167     wxIndividualLayoutConstraint width;
 168     wxIndividualLayoutConstraint height;
 169     // Centre constraints
 170     wxIndividualLayoutConstraint centreX;
 171     wxIndividualLayoutConstraint centreY;
 172
 173     wxLayoutConstraints();
 174
 175     // note that default copy ctor and assignment operators are ok
 176
 177     ~wxLayoutConstraints(){}
 178
 179     bool SatisfyConstraints(wxWindowBase *win, int *noChanges);
 180     bool AreSatisfied() const
 181     {
 182         return left.GetDone() && top.GetDone() &&
 183                width.GetDone() && height.GetDone();
 184     }
 185
 186     DECLARE_DYNAMIC_CLASS(wxLayoutConstraints)
 187 };
 188
 189 #endif // wxUSE_CONSTRAINTS
 190
 191 #endif // _WX_LAYOUT_H_