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C/C++ Source or Header  |  2002-01-08  |  6KB  |  223 lines
  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: symbols.cpp,v 1.4 2002/01/08 23:27:53 VS Exp $
  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, const wxSize& toolSize)
  170. {
  171.     symbol->GetShape()->Recompute();
  172.  
  173.     wxBitmap *newBitmap = new wxBitmap(toolSize.x, toolSize.y);
  174.  
  175.     // Test code
  176. #if 0
  177.     wxMemoryDC memDC;
  178.     memDC.SelectObject(*newBitmap);
  179.     memDC.SetPen(* wxBLACK_PEN);
  180.     memDC.SetBrush(* wxWHITE_BRUSH);
  181.     memDC.SetBackground(wxBrush(wxSystemSettings::GetColour(wxSYS_COLOUR_3DFACE), wxSOLID));
  182.     memDC.SetLogicalFunction(wxCOPY);
  183.     memDC.Clear();
  184.  
  185.     memDC.DrawLine(0, 0, toolSize.x, toolSize.y);
  186.     memDC.DrawLine(0, toolSize.y, toolSize.x, 0);
  187.  
  188.     memDC.SelectObject(wxNullBitmap);
  189. #endif
  190.  
  191. #if 1       
  192.     wxMemoryDC memDC;
  193.  
  194.     double height, width, maxSize;
  195.     symbol->GetShape()->GetBoundingBoxMax(&width, &height);
  196.  
  197.     if (height > width)
  198.         maxSize = height;
  199.     else
  200.         maxSize = width;
  201.  
  202.     double borderMargin = 4.0;
  203.     double scaleFactor = (double)(toolSize.x / (maxSize + 2*borderMargin));
  204.     double centreX = (double)((toolSize.x/scaleFactor)/2.0)-1;
  205.     double centreY = centreX;
  206.  
  207.     memDC.SelectObject(*newBitmap);
  208.  
  209.     memDC.SetUserScale(scaleFactor, scaleFactor);
  210.  
  211.     memDC.SetBackground(wxBrush(wxSystemSettings::GetColour(wxSYS_COLOUR_3DFACE), wxSOLID));
  212.     memDC.Clear();
  213.  
  214.     symbol->GetShape()->Show(TRUE);
  215.     symbol->GetShape()->Move(memDC, centreX, centreY);
  216.  
  217.     memDC.SelectObject(wxNullBitmap);
  218. #endif
  219.  
  220.     return newBitmap;
  221. }
  222.  
  223.