contrib/samples/ogl/ogledit/view.cpp

   1 /////////////////////////////////////////////////////////////////////////////
   2 // Name:        view.cpp
   3 // Purpose:     Implements view functionality in OGLEdit
   4 // Author:      Julian Smart
   5 // Modified by:
   6 // Created:     12/07/98
   7 // RCS-ID:      $Id$
   8 // Copyright:   (c) Julian Smart
   9 // Licence:     wxWindows 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/colordlg.h>
  28
  29 #if !wxUSE_DOC_VIEW_ARCHITECTURE
  30 #error You must set wxUSE_DOC_VIEW_ARCHITECTURE to 1 in wx_setup.h!
  31 #endif
  32
  33 #include "ogledit.h"
  34 #include "doc.h"
  35 #include "view.h"
  36 #include "palette.h"
  37
  38 IMPLEMENT_DYNAMIC_CLASS(DiagramView, wxView)
  39
  40 BEGIN_EVENT_TABLE(DiagramView, wxView)
  41     EVT_MENU(OGLEDIT_CUT, DiagramView::OnCut)
  42     EVT_MENU(OGLEDIT_CHANGE_BACKGROUND_COLOUR, DiagramView::OnChangeBackgroundColour)
  43     EVT_MENU(OGLEDIT_EDIT_LABEL, DiagramView::OnEditLabel)
  44 END_EVENT_TABLE()
  45
  46 // What to do when a view is created. Creates actual
  47 // windows for displaying the view.
  48 bool DiagramView::OnCreate(wxDocument *doc, long WXUNUSED(flags))
  49 {
  50   frame = GetMainFrame();
  51   canvas = GetMainFrame()->canvas;
  52   canvas->view = this;
  53
  54   SetFrame(frame);
  55   Activate(true);
  56
  57   // Initialize the edit menu Undo and Redo items
  58   doc->GetCommandProcessor()->SetEditMenu(((MyFrame *)frame)->editMenu);
  59   doc->GetCommandProcessor()->Initialize();
  60
  61   wxShapeCanvas *shapeCanvas = (wxShapeCanvas *)canvas;
  62   DiagramDocument *diagramDoc = (DiagramDocument *)doc;
  63   shapeCanvas->SetDiagram(diagramDoc->GetDiagram());
  64   diagramDoc->GetDiagram()->SetCanvas(shapeCanvas);
  65
  66   return true;
  67 }
  68
  69 #define CENTER  false // Place the drawing to the center of the page
  70
  71
  72 // Sneakily gets used for default print/preview
  73 // as well as drawing on the screen.
  74 void DiagramView::OnDraw(wxDC *dc)
  75 {
  76
  77   /* You might use THIS code if you were scaling
  78    * graphics of known size to fit on the page.
  79    */
  80   int w, h;
  81
  82   // We need to adjust for the graphic size, a formula will be added
  83   float maxX = 900;
  84   float maxY = 700;
  85   // A better way of find the maxium values would be to search through
  86   // the linked list
  87
  88   // Let's have at least 10 device units margin
  89   float marginX = 10;
  90   float marginY = 10;
  91
  92   // Add the margin to the graphic size
  93   maxX += (2 * marginX);
  94   maxY += (2 * marginY);
  95
  96   // Get the size of the DC in pixels
  97   dc->GetSize (&w, &h);
  98
  99   // Calculate a suitable scaling factor
 100   float scaleX = (float) (w / maxX);
 101   float scaleY = (float) (h / maxY);
 102
 103   // Use x or y scaling factor, whichever fits on the DC
 104   float actualScale = wxMin (scaleX, scaleY);
 105
 106   float posX, posY;
 107   // Calculate the position on the DC for centring the graphic
 108   #if 0
 109      // center the drawing
 110       posX = (float) ((w - (200 * actualScale)) / 2.0);
 111       posY = (float) ((h - (200 * actualScale)) / 2.0);
 112   #else
 113      // Use defined presets
 114       posX = 10;
 115       posY = 35;
 116   #endif
 117
 118
 119   // Set the scale and origin
 120   dc->SetUserScale (actualScale, actualScale);
 121   dc->SetDeviceOrigin ((long) posX, (long) posY);
 122
 123   // This part was added to preform the print preview and printing functions
 124
 125   dc->BeginDrawing(); // Allows optimization of drawing code under MS Windows.
 126   wxDiagram *diagram_p=((DiagramDocument*)GetDocument())->GetDiagram();  // Get the current diagram
 127   if (diagram_p->GetShapeList())
 128   {
 129     /* wxCursor *old_cursor = NULL; */
 130     wxNode *current = diagram_p->GetShapeList()->GetFirst();
 131
 132     while (current) // Loop through the entire list of shapes
 133     {
 134         wxShape *object = (wxShape *)current->GetData();
 135         if (!object->GetParent())
 136         {
 137             object->Draw(* dc); // Draw the shape onto our printing dc
 138         }
 139         current = current->GetNext();  // Procede to the next shape in the list
 140     }
 141   }
 142   dc->EndDrawing(); // Allows optimization of drawing code under MS Windows.
 143 }
 144
 145 void DiagramView::OnUpdate(wxView *WXUNUSED(sender), wxObject *WXUNUSED(hint))
 146 {
 147   if (canvas)
 148     canvas->Refresh();
 149 }
 150
 151 // Clean up windows used for displaying the view.
 152 bool DiagramView::OnClose(bool WXUNUSED(deleteWindow))
 153 {
 154   if (!GetDocument()->Close())
 155     return false;
 156
 157   DiagramDocument *diagramDoc = (DiagramDocument *)GetDocument();
 158   diagramDoc->GetDiagram()->SetCanvas(NULL);
 159
 160   canvas->ClearBackground();
 161   canvas->SetDiagram(NULL);
 162   canvas->view = NULL;
 163   canvas = NULL;
 164
 165   wxString s = wxTheApp->GetAppName();
 166   if (frame)
 167     frame->SetTitle(s);
 168
 169   SetFrame(NULL);
 170
 171   Activate(false);
 172
 173   return true;
 174 }
 175
 176 wxShape *DiagramView::FindSelectedShape(void)
 177 {
 178   DiagramDocument *doc = (DiagramDocument *)GetDocument();
 179   wxShape *theShape = NULL;
 180   wxNode *node = doc->GetDiagram()->GetShapeList()->GetFirst();
 181   while (node)
 182   {
 183     wxShape *eachShape = (wxShape *)node->GetData();
 184     if ((eachShape->GetParent() == NULL) && eachShape->Selected())
 185     {
 186       theShape = eachShape;
 187       node = NULL;
 188     }
 189     else node = node->GetNext();
 190   }
 191   return theShape;
 192 }
 193
 194 void DiagramView::OnCut(wxCommandEvent& WXUNUSED(event))
 195 {
 196   DiagramDocument *doc = (DiagramDocument *)GetDocument();
 197
 198   wxShape *theShape = FindSelectedShape();
 199   if (theShape)
 200     doc->GetCommandProcessor()->Submit(new DiagramCommand(_T("Cut"), OGLEDIT_CUT, doc, NULL, 0.0, 0.0, true, theShape));
 201 }
 202
 203 void DiagramView::OnChangeBackgroundColour(wxCommandEvent& WXUNUSED(event))
 204 {
 205       DiagramDocument *doc = (DiagramDocument *)GetDocument();
 206
 207       wxShape *theShape = FindSelectedShape();
 208       if (theShape)
 209       {
 210         wxColourData data;
 211         data.SetChooseFull(true);
 212         data.SetColour(theShape->GetBrush()->GetColour());
 213
 214         wxColourDialog *dialog = new wxColourDialog(frame, &data);
 215         wxBrush *theBrush = NULL;
 216         if (dialog->ShowModal() == wxID_OK)
 217         {
 218           wxColourData retData = dialog->GetColourData();
 219           wxColour col = retData.GetColour();
 220           theBrush = wxTheBrushList->FindOrCreateBrush(col, wxSOLID);
 221         }
 222         dialog->Close();
 223
 224         if (theBrush)
 225           doc->GetCommandProcessor()->Submit(new DiagramCommand(_T("Change colour"), OGLEDIT_CHANGE_BACKGROUND_COLOUR, doc,
 226             theBrush, theShape));
 227       }
 228 }
 229
 230 void DiagramView::OnEditLabel(wxCommandEvent& WXUNUSED(event))
 231 {
 232       wxShape *theShape = FindSelectedShape();
 233       if (theShape)
 234       {
 235         wxString newLabel = wxGetTextFromUser(_T("Enter new label"), _T("Shape Label"), ((MyEvtHandler *)theShape->GetEventHandler())->label);
 236         GetDocument()->GetCommandProcessor()->Submit(new DiagramCommand(_T("Edit label"), OGLEDIT_EDIT_LABEL, (DiagramDocument*) GetDocument(), newLabel, theShape));
 237       }
 238 }
 239
 240
 241 /*
 242  * Window implementations
 243  */
 244
 245 BEGIN_EVENT_TABLE(MyCanvas, wxShapeCanvas)
 246     EVT_MOUSE_EVENTS(MyCanvas::OnMouseEvent)
 247     EVT_PAINT(MyCanvas::OnPaint)
 248 END_EVENT_TABLE()
 249
 250 // Define a constructor for my canvas
 251 MyCanvas::MyCanvas(wxView *v, wxWindow *parent, wxWindowID id, const wxPoint& pos,
 252     const wxSize& size, long style):
 253  wxShapeCanvas(parent, id, pos, size, style)
 254 {
 255   SetBackgroundColour(*wxWHITE);
 256   view = v;
 257 }
 258
 259 MyCanvas::~MyCanvas(void)
 260 {
 261 }
 262
 263 void MyCanvas::OnLeftClick(double x, double y, int WXUNUSED(keys))
 264 {
 265   EditorToolPalette *palette = wxGetApp().frame->palette;
 266   wxClassInfo *info = NULL;
 267   switch (palette->currentlySelected)
 268   {
 269     case PALETTE_TOOL1:
 270     {
 271       info = CLASSINFO(wxRectangleShape);
 272       break;
 273     }
 274     case PALETTE_TOOL2:
 275     {
 276       info = CLASSINFO(wxRoundedRectangleShape);
 277       break;
 278     }
 279     case PALETTE_TOOL3:
 280     {
 281       info = CLASSINFO(wxEllipseShape);
 282       break;
 283     }
 284     case PALETTE_TOOL4:
 285     {
 286       info = CLASSINFO(wxDiamondShape);
 287       break;
 288     }
 289     default:
 290       break;
 291   }
 292   if (info)
 293   {
 294     view->GetDocument()->GetCommandProcessor()->Submit(
 295       new DiagramCommand( info->GetClassName(), OGLEDIT_ADD_SHAPE, (DiagramDocument *)view->GetDocument(), info,
 296          x, y));
 297   }
 298 }
 299
 300 void MyCanvas::OnRightClick(double WXUNUSED(x), double WXUNUSED(y), int WXUNUSED(keys))
 301 {
 302 }
 303
 304 void MyCanvas::OnDragLeft(bool WXUNUSED(draw), double WXUNUSED(x), double WXUNUSED(y), int WXUNUSED(keys))
 305 {
 306 }
 307
 308 void MyCanvas::OnBeginDragLeft(double WXUNUSED(x), double WXUNUSED(y), int WXUNUSED(keys))
 309 {
 310 }
 311
 312 void MyCanvas::OnEndDragLeft(double WXUNUSED(x), double WXUNUSED(y), int WXUNUSED(keys))
 313 {
 314 }
 315
 316 void MyCanvas::OnDragRight(bool WXUNUSED(draw), double WXUNUSED(x), double WXUNUSED(y), int WXUNUSED(keys))
 317 {
 318 }
 319
 320 void MyCanvas::OnBeginDragRight(double WXUNUSED(x), double WXUNUSED(y), int WXUNUSED(keys))
 321 {
 322 }
 323
 324 void MyCanvas::OnEndDragRight(double WXUNUSED(x), double WXUNUSED(y), int WXUNUSED(keys))
 325 {
 326 }
 327
 328 void MyCanvas::OnMouseEvent(wxMouseEvent& event)
 329 {
 330     wxShapeCanvas::OnMouseEvent(event);
 331 }
 332
 333 void MyCanvas::OnPaint(wxPaintEvent& event)
 334 {
 335 //  if (GetDiagram())
 336     wxShapeCanvas::OnPaint(event);
 337 }