contrib/samples/ogl/studio/symbols.cpp

   1 /////////////////////////////////////////////////////////////////////////////
   2 // Name:        symbols.cpp
   3 // Purpose:     Implements the Studio symbol database
   4 // Author:      Julian Smart
   5 // Modified by:
   6 // Created:     12/07/98
   7 // RCS-ID:      $Id$
   8 // Copyright:   (c) Julian Smart
   9 // Licence:
  10 /////////////////////////////////////////////////////////////////////////////
  11
  12 #ifdef __GNUG__
  13 // #pragma implementation
  14 #endif
  15
  16 // For compilers that support precompilation, includes "wx.h".
  17 #include <wx/wxprec.h>
  18
  19 #ifdef __BORLANDC__
  20 #pragma hdrstop
  21 #endif
  22
  23 #ifndef WX_PRECOMP
  24 #include <wx/wx.h>
  25 #endif
  26
  27 #include <wx/wxexpr.h>
  28
  29 #include "studio.h"
  30 #include "doc.h"
  31 #include "shapes.h"
  32 #include "view.h"
  33 #include "symbols.h"
  34
  35 /*
  36  * csSymbol
  37  * Represents information about a symbol.
  38  */
  39
  40 csSymbol::csSymbol(const wxString& name, wxShape* shape)
  41 {
  42     m_name = name;
  43     m_shape = shape;
  44     m_toolId = 0;
  45 }
  46
  47 csSymbol::~csSymbol()
  48 {
  49     delete m_shape;
  50 }
  51
  52 /*
  53  * A table of all possible shapes.
  54  * We can use this to construct a palette, etc.
  55  */
  56 csSymbolDatabase::csSymbolDatabase()
  57 {
  58     m_currentId = 800;
  59 }
  60
  61 csSymbolDatabase::~csSymbolDatabase()
  62 {
  63     ClearSymbols();
  64 }
  65
  66 void csSymbolDatabase::AddSymbol(csSymbol* symbol)
  67 {
  68     symbol->SetToolId(m_currentId);
  69     m_symbols.Append(symbol);
  70
  71     m_currentId ++;
  72 }
  73
  74 void csSymbolDatabase::ClearSymbols()
  75 {
  76     wxNode* node = m_symbols.First();
  77     while (node)
  78     {
  79         csSymbol* symbol = (csSymbol*) node->Data();
  80         delete symbol;
  81
  82         node = node->Next();
  83     }
  84     m_symbols.Clear();
  85 }
  86
  87 csSymbol* csSymbolDatabase::FindSymbol(const wxString& name) const
  88 {
  89     wxNode* node = m_symbols.First();
  90     while (node)
  91     {
  92         csSymbol* symbol = (csSymbol*) node->Data();
  93         if (symbol->GetName() == name)
  94             return symbol;
  95
  96         node = node->Next();
  97     }
  98     return NULL;
  99 }
 100
 101 csSymbol* csSymbolDatabase::FindSymbol(int toolId) const
 102 {
 103     wxNode* node = m_symbols.First();
 104     while (node)
 105     {
 106         csSymbol* symbol = (csSymbol*) node->Data();
 107         if (symbol->GetToolId() == toolId)
 108             return symbol;
 109
 110         node = node->Next();
 111     }
 112     return NULL;
 113 }
 114
 115 // Add symbols to database
 116 void csApp::InitSymbols()
 117 {
 118     m_symbolDatabase = new csSymbolDatabase;
 119
 120     wxShape* shape = new csCircleShape();
 121     shape->AssignNewIds();
 122     shape->SetEventHandler(new csEvtHandler(shape, shape, wxString("")));
 123
 124     m_symbolDatabase->AddSymbol(new csSymbol("Circle", shape));
 125
 126     shape = new csCircleShadowShape();
 127     shape->AssignNewIds();
 128     shape->SetEventHandler(new csEvtHandler(shape, shape, wxString("")));
 129
 130     m_symbolDatabase->AddSymbol(new csSymbol("Circle shadow", shape));
 131
 132     shape = new csThinRectangleShape();
 133     shape->AssignNewIds();
 134     shape->SetEventHandler(new csEvtHandler(shape, shape, wxString("")));
 135
 136     m_symbolDatabase->AddSymbol(new csSymbol("Thin Rectangle", shape));
 137
 138     shape = new csWideRectangleShape();
 139     shape->AssignNewIds();
 140     shape->SetEventHandler(new csEvtHandler(shape, shape, wxString("")));
 141
 142     m_symbolDatabase->AddSymbol(new csSymbol("Wide Rectangle", shape));
 143
 144     shape = new csSemiCircleShape();
 145     shape->AssignNewIds();
 146     shape->SetEventHandler(new csEvtHandler(shape, shape, wxString("")));
 147
 148     m_symbolDatabase->AddSymbol(new csSymbol("SemiCircle", shape));
 149
 150     shape = new csTriangleShape();
 151     shape->AssignNewIds();
 152     shape->SetEventHandler(new csEvtHandler(shape, shape, wxString("")));
 153
 154     m_symbolDatabase->AddSymbol(new csSymbol("Triangle", shape));
 155
 156     shape = new csOctagonShape();
 157     shape->AssignNewIds();
 158     shape->SetEventHandler(new csEvtHandler(shape, shape, wxString("")));
 159
 160     m_symbolDatabase->AddSymbol(new csSymbol("Octagon", shape));
 161
 162     shape = new csGroupShape();
 163     shape->AssignNewIds();
 164     shape->SetEventHandler(new csEvtHandler(shape, shape, wxString("")));
 165
 166     m_symbolDatabase->AddSymbol(new csSymbol("Group", shape));
 167 }
 168
 169 wxBitmap* csSymbolDatabase::CreateToolBitmap(csSymbol* symbol)
 170 {
 171     int objectBitmapSize = 32;
 172
 173     symbol->GetShape()->Recompute();
 174
 175     wxBitmap *newBitmap = new wxBitmap(objectBitmapSize, objectBitmapSize);
 176
 177     wxMemoryDC memDC;
 178
 179     double height, width, maxSize;
 180     symbol->GetShape()->GetBoundingBoxMax(&width, &height);
 181
 182     if (height > width)
 183         maxSize = height;
 184     else
 185         maxSize = width;
 186
 187     double borderMargin = 4.0;
 188     double scaleFactor = (double)(objectBitmapSize / (maxSize + 2*borderMargin));
 189     double centreX = (double)((objectBitmapSize/scaleFactor)/2.0)-1;
 190     double centreY = centreX;
 191
 192     memDC.SelectObject(*newBitmap);
 193     memDC.SetUserScale(scaleFactor, scaleFactor);
 194
 195     memDC.SetBackground(wxBrush(wxSystemSettings::GetSystemColour(wxSYS_COLOUR_3DFACE), wxSOLID));
 196     memDC.Clear();
 197     symbol->GetShape()->Show(TRUE);
 198     symbol->GetShape()->Move(memDC, centreX, centreY);
 199     memDC.SelectObject(wxNullBitmap);
 200
 201     return newBitmap;
 202 }
 203