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/deprecated/setup.h>
  28 #include <wx/deprecated/wxexpr.h>
  29
  30 #include "studio.h"
  31 #include "doc.h"
  32 #include "shapes.h"
  33 #include "view.h"
  34 #include "symbols.h"
  35
  36 /*
  37  * csSymbol
  38  * Represents information about a symbol.
  39  */
  40
  41 csSymbol::csSymbol(const wxString& name, wxShape* shape)
  42 {
  43     m_name = name;
  44     m_shape = shape;
  45     m_toolId = 0;
  46 }
  47
  48 csSymbol::~csSymbol()
  49 {
  50     delete m_shape;
  51 }
  52
  53 /*
  54  * A table of all possible shapes.
  55  * We can use this to construct a palette, etc.
  56  */
  57 csSymbolDatabase::csSymbolDatabase()
  58 {
  59     m_currentId = 800;
  60 }
  61
  62 csSymbolDatabase::~csSymbolDatabase()
  63 {
  64     ClearSymbols();
  65 }
  66
  67 void csSymbolDatabase::AddSymbol(csSymbol* symbol)
  68 {
  69     symbol->SetToolId(m_currentId);
  70     m_symbols.Append(symbol);
  71
  72     m_currentId ++;
  73 }
  74
  75 void csSymbolDatabase::ClearSymbols()
  76 {
  77     wxNode* node = m_symbols.First();
  78     while (node)
  79     {
  80         csSymbol* symbol = (csSymbol*) node->Data();
  81         delete symbol;
  82
  83         node = node->Next();
  84     }
  85     m_symbols.Clear();
  86 }
  87
  88 csSymbol* csSymbolDatabase::FindSymbol(const wxString& name) const
  89 {
  90     wxNode* node = m_symbols.First();
  91     while (node)
  92     {
  93         csSymbol* symbol = (csSymbol*) node->Data();
  94         if (symbol->GetName() == name)
  95             return symbol;
  96
  97         node = node->Next();
  98     }
  99     return NULL;
 100 }
 101
 102 csSymbol* csSymbolDatabase::FindSymbol(int toolId) const
 103 {
 104     wxNode* node = m_symbols.First();
 105     while (node)
 106     {
 107         csSymbol* symbol = (csSymbol*) node->Data();
 108         if (symbol->GetToolId() == toolId)
 109             return symbol;
 110
 111         node = node->Next();
 112     }
 113     return NULL;
 114 }
 115
 116 // Add symbols to database
 117 void csApp::InitSymbols()
 118 {
 119     m_symbolDatabase = new csSymbolDatabase;
 120
 121     wxShape* shape = new csCircleShape();
 122     shape->AssignNewIds();
 123     shape->SetEventHandler(new csEvtHandler(shape, shape, wxEmptyString));
 124
 125     m_symbolDatabase->AddSymbol(new csSymbol(_T("Circle"), shape));
 126
 127     shape = new csCircleShadowShape();
 128     shape->AssignNewIds();
 129     shape->SetEventHandler(new csEvtHandler(shape, shape, wxEmptyString));
 130
 131     m_symbolDatabase->AddSymbol(new csSymbol(_T("Circle shadow"), shape));
 132
 133     shape = new csThinRectangleShape();
 134     shape->AssignNewIds();
 135     shape->SetEventHandler(new csEvtHandler(shape, shape, wxEmptyString));
 136
 137     m_symbolDatabase->AddSymbol(new csSymbol(_T("Thin Rectangle"), shape));
 138
 139     shape = new csWideRectangleShape();
 140     shape->AssignNewIds();
 141     shape->SetEventHandler(new csEvtHandler(shape, shape, wxEmptyString));
 142
 143     m_symbolDatabase->AddSymbol(new csSymbol(_T("Wide Rectangle"), shape));
 144
 145     shape = new csSemiCircleShape();
 146     shape->AssignNewIds();
 147     shape->SetEventHandler(new csEvtHandler(shape, shape, wxEmptyString));
 148
 149     m_symbolDatabase->AddSymbol(new csSymbol(_T("SemiCircle"), shape));
 150
 151     shape = new csTriangleShape();
 152     shape->AssignNewIds();
 153     shape->SetEventHandler(new csEvtHandler(shape, shape, wxEmptyString));
 154
 155     m_symbolDatabase->AddSymbol(new csSymbol(_T("Triangle"), shape));
 156
 157     shape = new csOctagonShape();
 158     shape->AssignNewIds();
 159     shape->SetEventHandler(new csEvtHandler(shape, shape, wxEmptyString));
 160
 161     m_symbolDatabase->AddSymbol(new csSymbol(_T("Octagon"), shape));
 162
 163     shape = new csGroupShape();
 164     shape->AssignNewIds();
 165     shape->SetEventHandler(new csEvtHandler(shape, shape, wxEmptyString));
 166
 167     m_symbolDatabase->AddSymbol(new csSymbol(_T("Group"), shape));
 168 }
 169
 170 wxBitmap* csSymbolDatabase::CreateToolBitmap(csSymbol* symbol, const wxSize& toolSize)
 171 {
 172     symbol->GetShape()->Recompute();
 173
 174     wxBitmap *newBitmap = new wxBitmap(toolSize.x, toolSize.y);
 175
 176     // Test code
 177 #if 0
 178     wxMemoryDC memDC;
 179     memDC.SelectObject(*newBitmap);
 180     memDC.SetPen(* wxBLACK_PEN);
 181     memDC.SetBrush(* wxWHITE_BRUSH);
 182     memDC.SetBackground(wxBrush(wxSystemSettings::GetColour(wxSYS_COLOUR_3DFACE), wxSOLID));
 183     memDC.SetLogicalFunction(wxCOPY);
 184     memDC.Clear();
 185
 186     memDC.DrawLine(0, 0, toolSize.x, toolSize.y);
 187     memDC.DrawLine(0, toolSize.y, toolSize.x, 0);
 188
 189     memDC.SelectObject(wxNullBitmap);
 190 #endif
 191
 192 #if 1
 193     wxMemoryDC memDC;
 194
 195     double height, width, maxSize;
 196     symbol->GetShape()->GetBoundingBoxMax(&width, &height);
 197
 198     if (height > width)
 199         maxSize = height;
 200     else
 201         maxSize = width;
 202
 203     double borderMargin = 4.0;
 204     double scaleFactor = (double)(toolSize.x / (maxSize + 2*borderMargin));
 205     double centreX = (double)((toolSize.x/scaleFactor)/2.0)-1;
 206     double centreY = centreX;
 207
 208     memDC.SelectObject(*newBitmap);
 209
 210     memDC.SetUserScale(scaleFactor, scaleFactor);
 211
 212     memDC.SetBackground(wxBrush(wxSystemSettings::GetColour(wxSYS_COLOUR_3DFACE), wxSOLID));
 213     memDC.Clear();
 214
 215     symbol->GetShape()->Show(TRUE);
 216     symbol->GetShape()->Move(memDC, centreX, centreY);
 217
 218     memDC.SelectObject(wxNullBitmap);
 219 #endif
 220
 221     return newBitmap;
 222 }
 223