samples/ogl/studio/view.cpp

   1 /////////////////////////////////////////////////////////////////////////////
   2 // Name:        view.cpp
   3 // Purpose:     Implements view functionality
   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/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 "studio.h"
  34 #include "doc.h"
  35 #include "view.h"
  36 #include "cspalette.h"
  37 #include "symbols.h"
  38 #include "dialogs.h"
  39 #include <wx/ogl/basicp.h>
  40 #include <wx/ogl/linesp.h>
  41
  42 IMPLEMENT_DYNAMIC_CLASS(csDiagramView, wxView)
  43
  44 BEGIN_EVENT_TABLE(csDiagramView, wxView)
  45     EVT_MENU(wxID_CUT, csDiagramView::OnCut)
  46     EVT_MENU(wxID_COPY, csDiagramView::OnCopy)
  47     EVT_MENU(wxID_CLEAR, csDiagramView::OnClear)
  48     EVT_MENU(wxID_PASTE, csDiagramView::OnPaste)
  49     EVT_MENU(wxID_DUPLICATE, csDiagramView::OnDuplicate)
  50     EVT_MENU(ID_CS_CHANGE_BACKGROUND_COLOUR, csDiagramView::OnChangeBackgroundColour)
  51     EVT_MENU(ID_CS_EDIT_PROPERTIES, csDiagramView::OnEditProperties)
  52     EVT_MENU(ID_CS_SELECT_ALL, csDiagramView::OnSelectAll)
  53     EVT_TOOL(DIAGRAM_TOOLBAR_LINE_ARROW, csDiagramView::OnToggleArrowTool)
  54     EVT_COMBOBOX(ID_WINDOW_POINT_SIZE_COMBOBOX, csDiagramView::OnPointSizeComboSel)
  55     EVT_COMBOBOX(ID_WINDOW_ZOOM_COMBOBOX, csDiagramView::OnZoomSel)
  56     EVT_TEXT(ID_WINDOW_POINT_SIZE_COMBOBOX, csDiagramView::OnPointSizeComboText)
  57     EVT_TOOL(DIAGRAM_TOOLBAR_ALIGNL, csDiagramView::OnAlign)
  58     EVT_TOOL(DIAGRAM_TOOLBAR_ALIGNR, csDiagramView::OnAlign)
  59     EVT_TOOL(DIAGRAM_TOOLBAR_ALIGNB, csDiagramView::OnAlign)
  60     EVT_TOOL(DIAGRAM_TOOLBAR_ALIGNT, csDiagramView::OnAlign)
  61     EVT_TOOL(DIAGRAM_TOOLBAR_ALIGN_HORIZ, csDiagramView::OnAlign)
  62     EVT_TOOL(DIAGRAM_TOOLBAR_ALIGN_VERT, csDiagramView::OnAlign)
  63     EVT_TOOL(DIAGRAM_TOOLBAR_COPY_SIZE, csDiagramView::OnAlign)
  64     EVT_TOOL(DIAGRAM_TOOLBAR_NEW_POINT, csDiagramView::OnNewLinePoint)
  65     EVT_TOOL(DIAGRAM_TOOLBAR_CUT_POINT, csDiagramView::OnCutLinePoint)
  66     EVT_TOOL(DIAGRAM_TOOLBAR_STRAIGHTEN, csDiagramView::OnStraightenLines)
  67     EVT_UPDATE_UI(DIAGRAM_TOOLBAR_ALIGNL, csDiagramView::OnAlignUpdate)
  68     EVT_UPDATE_UI(DIAGRAM_TOOLBAR_ALIGNR, csDiagramView::OnAlignUpdate)
  69     EVT_UPDATE_UI(DIAGRAM_TOOLBAR_ALIGNB, csDiagramView::OnAlignUpdate)
  70     EVT_UPDATE_UI(DIAGRAM_TOOLBAR_ALIGNT, csDiagramView::OnAlignUpdate)
  71     EVT_UPDATE_UI(DIAGRAM_TOOLBAR_ALIGN_HORIZ, csDiagramView::OnAlignUpdate)
  72     EVT_UPDATE_UI(DIAGRAM_TOOLBAR_ALIGN_VERT, csDiagramView::OnAlignUpdate)
  73     EVT_UPDATE_UI(DIAGRAM_TOOLBAR_COPY_SIZE, csDiagramView::OnAlignUpdate)
  74     EVT_UPDATE_UI(DIAGRAM_TOOLBAR_NEW_POINT, csDiagramView::OnNewLinePointUpdate)
  75     EVT_UPDATE_UI(DIAGRAM_TOOLBAR_CUT_POINT, csDiagramView::OnCutLinePointUpdate)
  76     EVT_UPDATE_UI(DIAGRAM_TOOLBAR_STRAIGHTEN, csDiagramView::OnStraightenLinesUpdate)
  77     EVT_UPDATE_UI(DIAGRAM_TOOLBAR_LINE_ARROW, csDiagramView::OnToggleArrowToolUpdate)
  78     EVT_UPDATE_UI(wxID_CUT, csDiagramView::OnCutUpdate)
  79     EVT_UPDATE_UI(wxID_COPY, csDiagramView::OnCopyUpdate)
  80     EVT_UPDATE_UI(wxID_CLEAR, csDiagramView::OnClearUpdate)
  81     EVT_UPDATE_UI(wxID_PASTE, csDiagramView::OnPasteUpdate)
  82     EVT_UPDATE_UI(wxID_DUPLICATE, csDiagramView::OnDuplicateUpdate)
  83     EVT_UPDATE_UI(ID_CS_EDIT_PROPERTIES, csDiagramView::OnEditPropertiesUpdate)
  84     EVT_UPDATE_UI(wxID_UNDO, csDiagramView::OnUndoUpdate)
  85     EVT_UPDATE_UI(wxID_REDO, csDiagramView::OnRedoUpdate)
  86 END_EVENT_TABLE()
  87
  88 // What to do when a view is created. Creates actual
  89 // windows for displaying the view.
  90 bool csDiagramView::OnCreate(wxDocument *doc, long flags)
  91 {
  92   wxMenu* editMenu;
  93   frame = wxGetApp().CreateChildFrame(doc, this, &editMenu);
  94   canvas = wxGetApp().CreateCanvas(this, frame);
  95   canvas->SetView(this);
  96
  97   SetFrame(frame);
  98   Activate(TRUE);
  99
 100   // Initialize the edit menu Undo and Redo items
 101   doc->GetCommandProcessor()->SetEditMenu(editMenu);
 102   doc->GetCommandProcessor()->Initialize();
 103
 104   wxShapeCanvas *shapeCanvas = (wxShapeCanvas *)canvas;
 105   csDiagramDocument *diagramDoc = (csDiagramDocument *)doc;
 106   shapeCanvas->SetDiagram(diagramDoc->GetDiagram());
 107   diagramDoc->GetDiagram()->SetCanvas(shapeCanvas);
 108
 109   diagramDoc->GetDiagram()->SetGridSpacing((double) wxGetApp().GetGridSpacing());
 110
 111     switch (wxGetApp().GetGridStyle())
 112     {
 113         case csGRID_STYLE_NONE:
 114         {
 115             diagramDoc->GetDiagram()->SetSnapToGrid(FALSE);
 116             break;
 117         }
 118         case csGRID_STYLE_INVISIBLE:
 119         {
 120             diagramDoc->GetDiagram()->SetSnapToGrid(TRUE);
 121             break;
 122         }
 123         case csGRID_STYLE_DOTTED:
 124         {
 125             // TODO (not implemented in OGL)
 126             break;
 127         }
 128     }
 129
 130
 131   return TRUE;
 132 }
 133
 134 csDiagramView::~csDiagramView(void)
 135 {
 136     if (frame)
 137     {
 138         ((wxDocMDIChildFrame*)frame)->SetView(NULL);
 139     }
 140 }
 141
 142 // Sneakily gets used for default print/preview
 143 // as well as drawing on the screen.
 144 void csDiagramView::OnDraw(wxDC *dc)
 145 {
 146 }
 147
 148 void csDiagramView::OnUpdate(wxView *sender, wxObject *hint)
 149 {
 150   if (canvas)
 151     canvas->Refresh();
 152 }
 153
 154 // Clean up windows used for displaying the view.
 155 bool csDiagramView::OnClose(bool deleteWindow)
 156 {
 157   if (!GetDocument()->Close())
 158     return FALSE;
 159
 160   csDiagramDocument *diagramDoc = (csDiagramDocument *)GetDocument();
 161   diagramDoc->GetDiagram()->SetCanvas(NULL);
 162
 163   canvas->Clear();
 164   canvas->SetDiagram(NULL);
 165   canvas->SetView(NULL);
 166   canvas = NULL;
 167
 168   wxMenu* fileMenu = frame->GetMenuBar()->GetMenu(0);
 169
 170   // Remove file menu from those managed by the command history
 171   wxGetApp().GetDocManager()->FileHistoryRemoveMenu(fileMenu);
 172
 173   Activate(FALSE);
 174   frame->Show(FALSE);
 175
 176   if (deleteWindow)
 177   {
 178     frame->Destroy();
 179   }
 180
 181   return TRUE;
 182 }
 183
 184 // Adds or removes shape from m_selections
 185 void csDiagramView::SelectShape(wxShape* shape, bool select)
 186 {
 187     if (select && !m_selections.Member(shape))
 188         m_selections.Append(shape);
 189     else if (!select)
 190         m_selections.DeleteObject(shape);
 191 }
 192
 193 void csDiagramView::OnSelectAll(wxCommandEvent& event)
 194 {
 195     SelectAll(TRUE);
 196 }
 197
 198 wxShape *csDiagramView::FindFirstSelectedShape(void)
 199 {
 200   csDiagramDocument *doc = (csDiagramDocument *)GetDocument();
 201   wxShape *theShape = NULL;
 202   wxNode *node = doc->GetDiagram()->GetShapeList()->First();
 203   while (node)
 204   {
 205     wxShape *eachShape = (wxShape *)node->Data();
 206     if ((eachShape->GetParent() == NULL) && !eachShape->IsKindOf(CLASSINFO(wxLabelShape)) && eachShape->Selected())
 207     {
 208       theShape = eachShape;
 209       node = NULL;
 210     }
 211     else node = node->Next();
 212   }
 213   return theShape;
 214 }
 215
 216 void csDiagramView::FindSelectedShapes(wxList& selections, wxClassInfo* toFind)
 217 {
 218   csDiagramDocument *doc = (csDiagramDocument *)GetDocument();
 219   wxNode *node = doc->GetDiagram()->GetShapeList()->First();
 220   while (node)
 221   {
 222     wxShape *eachShape = (wxShape *)node->Data();
 223     if ((eachShape->GetParent() == NULL) && !eachShape->IsKindOf(CLASSINFO(wxLabelShape)) && eachShape->Selected() && ((toFind == NULL) || (eachShape->IsKindOf(toFind))))
 224     {
 225       selections.Append(eachShape);
 226     }
 227     node = node->Next();
 228   }
 229 }
 230
 231 void csDiagramView::OnUndoUpdate(wxUpdateUIEvent& event)
 232 {
 233     csDiagramDocument *doc = (csDiagramDocument *)GetDocument();
 234     event.Enable(doc->GetCommandProcessor()->CanUndo());
 235 }
 236
 237 void csDiagramView::OnRedoUpdate(wxUpdateUIEvent& event)
 238 {
 239     csDiagramDocument *doc = (csDiagramDocument *)GetDocument();
 240     event.Enable(doc->GetCommandProcessor()->CanRedo());
 241 }
 242
 243 void csDiagramView::OnCut(wxCommandEvent& event)
 244 {
 245     csDiagramDocument *doc = (csDiagramDocument *)GetDocument();
 246
 247     // Copy the shapes to the clipboard
 248     wxGetApp().GetDiagramClipboard().Copy(doc->GetDiagram());
 249
 250     wxList selections;
 251     FindSelectedShapes(selections);
 252
 253     DoCut(selections);
 254 }
 255
 256 void csDiagramView::OnClear(wxCommandEvent& event)
 257 {
 258     wxList selections;
 259     FindSelectedShapes(selections);
 260
 261     DoCut(selections);
 262 }
 263
 264 void csDiagramView::OnCopy(wxCommandEvent& event)
 265 {
 266     csDiagramDocument *doc = (csDiagramDocument *)GetDocument();
 267
 268     // Copy the shapes to the clipboard
 269     if (wxGetApp().GetDiagramClipboard().Copy(doc->GetDiagram()))
 270     {
 271 #ifdef __WXMSW__
 272         // Copy to the Windows clipboard
 273         wxGetApp().GetDiagramClipboard().CopyToClipboard(1.0);
 274 #endif
 275     }
 276 }
 277
 278 void csDiagramView::OnPaste(wxCommandEvent& event)
 279 {
 280     csDiagramDocument *doc = (csDiagramDocument *)GetDocument();
 281
 282     wxGetApp().GetDiagramClipboard().Paste(doc->GetDiagram());
 283 }
 284
 285 void csDiagramView::OnDuplicate(wxCommandEvent& event)
 286 {
 287     csDiagramDocument *doc = (csDiagramDocument *)GetDocument();
 288
 289     // Do a copy, then a paste
 290     wxGetApp().GetDiagramClipboard().Copy(doc->GetDiagram());
 291
 292     // Apply an offset. Really, this offset should keep being incremented,
 293     // but where do we reset it again?
 294     wxGetApp().GetDiagramClipboard().Paste(doc->GetDiagram(), NULL, 20, 20);
 295 }
 296
 297 void csDiagramView::OnCutUpdate(wxUpdateUIEvent& event)
 298 {
 299     event.Enable( (m_selections.Number() > 0) );
 300 }
 301
 302 void csDiagramView::OnClearUpdate(wxUpdateUIEvent& event)
 303 {
 304     event.Enable( (m_selections.Number() > 0) );
 305 }
 306
 307 void csDiagramView::OnCopyUpdate(wxUpdateUIEvent& event)
 308 {
 309     event.Enable( (m_selections.Number() > 0) );
 310 }
 311
 312 void csDiagramView::OnPasteUpdate(wxUpdateUIEvent& event)
 313 {
 314     csDiagramDocument *doc = (csDiagramDocument *)GetDocument();
 315
 316     int n = wxGetApp().GetDiagramClipboard().GetCount();
 317
 318     event.Enable( (n > 0) );
 319 }
 320
 321 void csDiagramView::OnDuplicateUpdate(wxUpdateUIEvent& event)
 322 {
 323     event.Enable( (m_selections.Number() > 0) );
 324 }
 325
 326 void csDiagramView::DoCut(wxList& shapes)
 327 {
 328     csDiagramDocument *doc = (csDiagramDocument *)GetDocument();
 329
 330     if (shapes.Number() > 0)
 331     {
 332         csDiagramCommand* cmd = new csDiagramCommand("Cut", doc);
 333
 334         wxNode* node = shapes.First();
 335         while (node)
 336         {
 337             wxShape *theShape = (wxShape*) node->Data();
 338             csCommandState* state = new csCommandState(ID_CS_CUT, NULL, theShape);
 339
 340             // Insert lines at the front, so they are cut first.
 341             // Otherwise we may try to remove a shape with a line still
 342             // attached.
 343             if (theShape->IsKindOf(CLASSINFO(wxLineShape)))
 344                 cmd->InsertState(state);
 345             else
 346                 cmd->AddState(state);
 347
 348             node = node->Next();
 349         }
 350         cmd->RemoveLines(); // Schedule any connected lines, not already mentioned,
 351                             // to be removed first
 352
 353         doc->GetCommandProcessor()->Submit(cmd);
 354     }
 355 }
 356
 357 // Generalised command
 358 void csDiagramView::DoCmd(wxList& shapes, wxList& oldShapes, int cmd, const wxString& op)
 359 {
 360     csDiagramDocument *doc = (csDiagramDocument *)GetDocument();
 361
 362     if (shapes.Number() > 0)
 363     {
 364         csDiagramCommand* command = new csDiagramCommand(op, doc);
 365
 366         wxNode* node = shapes.First();
 367         wxNode* node1 = oldShapes.First();
 368         while (node && node1)
 369         {
 370             wxShape *theShape = (wxShape*) node->Data();
 371             wxShape *oldShape = (wxShape*) node1->Data();
 372             csCommandState* state = new csCommandState(cmd, theShape, oldShape);
 373             command->AddState(state);
 374
 375             node = node->Next();
 376             node1 = node1->Next();
 377         }
 378         doc->GetCommandProcessor()->Submit(command);
 379     }
 380 }
 381
 382 void csDiagramView::OnChangeBackgroundColour(wxCommandEvent& event)
 383 {
 384     csDiagramDocument *doc = (csDiagramDocument *)GetDocument();
 385
 386     wxList selections;
 387     FindSelectedShapes(selections);
 388
 389     if (selections.Number() > 0)
 390     {
 391         wxColourData data;
 392         data.SetChooseFull(TRUE);
 393         if (selections.Number() == 1)
 394         {
 395             wxShape* firstShape = (wxShape*) selections.First()->Data();
 396             data.SetColour(firstShape->GetBrush()->GetColour());
 397         }
 398
 399         wxColourDialog *dialog = new wxColourDialog(frame, &data);
 400         wxBrush *theBrush = NULL;
 401         if (dialog->ShowModal() == wxID_OK)
 402         {
 403           wxColourData retData = dialog->GetColourData();
 404           wxColour col = retData.GetColour();
 405           theBrush = wxTheBrushList->FindOrCreateBrush(col, wxSOLID);
 406         }
 407         dialog->Close(TRUE);
 408         if (!theBrush)
 409             return;
 410
 411         csDiagramCommand* cmd = new csDiagramCommand("Change colour", doc);
 412
 413         wxNode* node = selections.First();
 414         while (node)
 415         {
 416             wxShape *theShape = (wxShape*) node->Data();
 417             wxShape* newShape = theShape->CreateNewCopy();
 418             newShape->SetBrush(theBrush);
 419
 420             csCommandState* state = new csCommandState(ID_CS_CHANGE_BACKGROUND_COLOUR, newShape, theShape);
 421             cmd->AddState(state);
 422
 423             node = node->Next();
 424         }
 425         doc->GetCommandProcessor()->Submit(cmd);
 426     }
 427 }
 428
 429 void csDiagramView::OnEditProperties(wxCommandEvent& event)
 430 {
 431       wxShape *theShape = FindFirstSelectedShape();
 432       if (theShape)
 433         ((csEvtHandler *)theShape->GetEventHandler())->EditProperties();
 434 }
 435
 436 void csDiagramView::OnEditPropertiesUpdate(wxUpdateUIEvent& event)
 437 {
 438     wxList selections;
 439     FindSelectedShapes(selections);
 440     event.Enable( (selections.Number() > 0) );
 441 }
 442
 443 void csDiagramView::OnPointSizeComboSel(wxCommandEvent& event)
 444 {
 445     wxComboBox* combo = (wxComboBox*) event.GetEventObject();
 446     wxASSERT( combo != NULL );
 447
 448     int newPointSize = (combo->GetSelection() + 1);
 449
 450     ApplyPointSize(newPointSize);
 451
 452 }
 453
 454 // TODO: must find out how to intercept the Return key, rather than
 455 // every key stroke. But for now, do every key stroke.
 456 void csDiagramView::OnPointSizeComboText(wxCommandEvent& event)
 457 {
 458     wxComboBox* combo = (wxComboBox*) event.GetEventObject();
 459     wxASSERT( combo != NULL );
 460
 461     wxString str(combo->GetValue());
 462     int newPointSize = atoi((const char*) str);
 463
 464     if (newPointSize < 2)
 465         return;
 466
 467     ApplyPointSize(newPointSize);
 468 }
 469
 470 void csDiagramView::ApplyPointSize(int pointSize)
 471 {
 472     csDiagramDocument *doc = (csDiagramDocument *)GetDocument();
 473
 474     wxList selections;
 475     FindSelectedShapes(selections);
 476
 477     if (selections.Number() > 0)
 478     {
 479         csDiagramCommand* cmd = new csDiagramCommand("Point size", doc);
 480
 481         wxNode* node = selections.First();
 482         while (node)
 483         {
 484             wxShape *theShape = (wxShape*) node->Data();
 485             wxShape *newShape = theShape->CreateNewCopy();
 486
 487             wxFont* newFont = wxTheFontList->FindOrCreateFont(pointSize,
 488                 theShape->GetFont()->GetFamily(),
 489                 theShape->GetFont()->GetStyle(),
 490                 theShape->GetFont()->GetWeight(),
 491                 theShape->GetFont()->GetUnderlined(),
 492                 theShape->GetFont()->GetFaceName());
 493
 494             newShape->SetFont(newFont);
 495
 496             csCommandState* state = new csCommandState(ID_CS_FONT_CHANGE, newShape, theShape);
 497
 498             cmd->AddState(state);
 499
 500             node = node->Next();
 501         }
 502         doc->GetCommandProcessor()->Submit(cmd);
 503     }
 504 }
 505
 506 void csDiagramView::OnZoomSel(wxCommandEvent& event)
 507 {
 508     int maxZoom = 200;
 509     int minZoom = 5;
 510     int inc = 5;
 511     int noStrings = (maxZoom - minZoom)/inc ;
 512
 513     wxComboBox* combo = (wxComboBox*) event.GetEventObject();
 514     wxASSERT( combo != NULL );
 515
 516     int scale = (int) ((noStrings - combo->GetSelection() - 1)*inc + minZoom);
 517
 518     canvas->SetScale((double) (scale/100.0), (double) (scale/100.0));
 519     canvas->Refresh();
 520 }
 521
 522 // Select or deselect all
 523 void csDiagramView::SelectAll(bool select)
 524 {
 525     wxClientDC dc(canvas);
 526     canvas->PrepareDC(dc);
 527
 528     if (!select)
 529     {
 530         wxList selections;
 531         FindSelectedShapes(selections);
 532
 533         wxNode* node = selections.First();
 534         while (node)
 535         {
 536             wxShape *theShape = (wxShape*) node->Data();
 537             theShape->Select(FALSE, &dc);
 538             SelectShape(theShape, FALSE);
 539
 540             node = node->Next();
 541         }
 542     }
 543     else
 544     {
 545         csDiagramDocument *doc = (csDiagramDocument *)GetDocument();
 546         wxNode *node = doc->GetDiagram()->GetShapeList()->First();
 547         while (node)
 548         {
 549             wxShape *eachShape = (wxShape *)node->Data();
 550             if (eachShape->GetParent() == NULL &&
 551                 !eachShape->IsKindOf(CLASSINFO(wxControlPoint)) &&
 552                 !eachShape->IsKindOf(CLASSINFO(wxLabelShape)))
 553             {
 554                 eachShape->Select(TRUE, &dc);
 555                 SelectShape(eachShape, TRUE);
 556             }
 557             node = node->Next();
 558         }
 559     }
 560 }
 561
 562
 563 void csDiagramView::OnToggleArrowTool(wxCommandEvent& event)
 564 {
 565     csDiagramDocument *doc = (csDiagramDocument *)GetDocument();
 566
 567     bool state = wxGetApp().GetDiagramToolBar()->GetToolState(DIAGRAM_TOOLBAR_LINE_ARROW);
 568     wxString stateName;
 569     if (state)
 570         stateName = "Arrow on";
 571     else
 572         stateName = "Arrow off";
 573
 574     wxList selections;
 575     FindSelectedShapes(selections, CLASSINFO(wxLineShape));
 576
 577     if (selections.Number() > 0)
 578     {
 579         csDiagramCommand* cmd = new csDiagramCommand(stateName, doc);
 580
 581         wxNode* node = selections.First();
 582         while (node)
 583         {
 584             wxLineShape *theShape = (wxLineShape*) node->Data();
 585             wxLineShape *newShape = NULL;
 586
 587             if (state)
 588             {
 589                 // Add arrow
 590                 if (theShape->GetArrows().Number() == 0)
 591                 {
 592                     newShape = (wxLineShape*) theShape->CreateNewCopy();
 593                     newShape->AddArrow(ARROW_ARROW, ARROW_POSITION_MIDDLE, 10.0, 0.0, "Normal arrowhead");
 594                 }
 595             }
 596             else
 597             {
 598                 if (theShape->GetArrows().Number() > 0)
 599                 {
 600                     newShape = (wxLineShape*) theShape->CreateNewCopy();
 601                     newShape->ClearArrowsAtPosition();
 602                 }
 603             }
 604
 605             // If the new state is the same as the old, don't bother adding it to the command state.
 606             if (newShape)
 607             {
 608                 csCommandState* state = new csCommandState(ID_CS_ARROW_CHANGE, newShape, theShape);
 609                 cmd->AddState(state);
 610             }
 611
 612             node = node->Next();
 613         }
 614         doc->GetCommandProcessor()->Submit(cmd);
 615     }
 616 }
 617
 618 void csDiagramView::OnToggleArrowToolUpdate(wxUpdateUIEvent& event)
 619 {
 620     wxList selections;
 621     FindSelectedShapes(selections, CLASSINFO(wxLineShape));
 622     event.Enable( (selections.Number() > 0) );
 623 }
 624
 625 // Make the point size combobox reflect this
 626 void csDiagramView::ReflectPointSize(int pointSize)
 627 {
 628     wxComboBox* comboBox = wxGetApp().GetPointSizeComboBox();
 629     comboBox->SetSelection(pointSize -1);
 630 }
 631
 632 // Make the arrow toggle button reflect the state of the line
 633 void csDiagramView::ReflectArrowState(wxLineShape* lineShape)
 634 {
 635     bool haveArrow = FALSE;
 636     wxNode *node = lineShape->GetArrows().First();
 637     while (node)
 638     {
 639       wxArrowHead *arrow = (wxArrowHead *)node->Data();
 640       if (ARROW_POSITION_MIDDLE == arrow->GetArrowEnd())
 641         haveArrow = TRUE;
 642       node = node->Next();
 643     }
 644
 645     wxGetApp().GetDiagramToolBar()->ToggleTool(DIAGRAM_TOOLBAR_LINE_ARROW, haveArrow);
 646 }
 647
 648 void csDiagramView::OnAlign(wxCommandEvent& event)
 649 {
 650     // Make a copy of the selections, keeping only those shapes
 651     // that are top-level non-line shapes.
 652     wxList selections;
 653     wxNode* node = GetSelectionList().First();
 654     while (node)
 655     {
 656         wxShape* shape = (wxShape*) node->Data();
 657         if ((shape->GetParent() == NULL) && (!shape->IsKindOf(CLASSINFO(wxLineShape))))
 658         {
 659             selections.Append(shape);
 660         }
 661         node = node->Next();
 662     }
 663
 664     if (selections.Number() == 0)
 665         return;
 666
 667     csDiagramDocument *doc = (csDiagramDocument *)GetDocument();
 668     csDiagramCommand* cmd = new csDiagramCommand("Align", doc);
 669
 670     node = selections.First();
 671     wxShape* firstShape = (wxShape*) node->Data();
 672
 673     double x = firstShape->GetX();
 674     double y = firstShape->GetY();
 675     double width, height;
 676     firstShape->GetBoundingBoxMax(&width, &height);
 677
 678     node = selections.First();
 679     while (node)
 680     {
 681         wxShape* shape = (wxShape*) node->Data();
 682         if (shape != firstShape)
 683         {
 684             double x1 = shape->GetX();
 685             double y1 = shape->GetY();
 686             double width1, height1;
 687             shape->GetBoundingBoxMax(& width1, & height1);
 688
 689             wxShape* newShape = shape->CreateNewCopy();
 690
 691             switch (event.GetId())
 692             {
 693                 case DIAGRAM_TOOLBAR_ALIGNL:
 694                 {
 695                     double x2 = (double)(x - (width/2.0) + (width1/2.0));
 696                     newShape->SetX(x2);
 697                     break;
 698                 }
 699                 case DIAGRAM_TOOLBAR_ALIGNR:
 700                 {
 701                     double x2 = (double)(x + (width/2.0) - (width1/2.0));
 702                     newShape->SetX(x2);
 703                     break;
 704                 }
 705                 case DIAGRAM_TOOLBAR_ALIGNB:
 706                 {
 707                     double y2 = (double)(y + (height/2.0) - (height1/2.0));
 708                     newShape->SetY(y2);
 709                     break;
 710                 }
 711                 case DIAGRAM_TOOLBAR_ALIGNT:
 712                 {
 713                     double y2 = (double)(y - (height/2.0) + (height1/2.0));
 714                     newShape->SetY(y2);
 715                     break;
 716                 }
 717                 case DIAGRAM_TOOLBAR_ALIGN_HORIZ:
 718                 {
 719                     newShape->SetX(x);
 720                     break;
 721                 }
 722                 case DIAGRAM_TOOLBAR_ALIGN_VERT:
 723                 {
 724                     newShape->SetY(y);
 725                     break;
 726                 }
 727                 case DIAGRAM_TOOLBAR_COPY_SIZE:
 728                 {
 729                     newShape->SetSize(width, height);
 730                     break;
 731                 }
 732             }
 733             csCommandState* state = new csCommandState(ID_CS_ALIGN, newShape, shape);
 734             cmd->AddState(state);
 735         }
 736         node = node->Next();
 737     }
 738     doc->GetCommandProcessor()->Submit(cmd);
 739 }
 740
 741 void csDiagramView::OnAlignUpdate(wxUpdateUIEvent& event)
 742 {
 743     // This is an approximation, since there may be lines
 744     // amongst the selections.
 745     event.Enable( (m_selections.Number() > 1) ) ;
 746 }
 747
 748 void csDiagramView::OnNewLinePoint(wxCommandEvent& event)
 749 {
 750     csDiagramDocument *doc = (csDiagramDocument *)GetDocument();
 751     csDiagramCommand* cmd = new csDiagramCommand("New line point", doc);
 752
 753     wxNode* node = m_selections.First();
 754     while (node)
 755     {
 756         wxShape* shape = (wxShape*) node->Data();
 757         if (shape->IsKindOf(CLASSINFO(wxLineShape)))
 758         {
 759             wxShape* newShape = shape->CreateNewCopy();
 760             ((wxLineShape*)newShape)->InsertLineControlPoint(NULL);
 761             csCommandState* state = new csCommandState(ID_CS_NEW_POINT, newShape, shape);
 762             cmd->AddState(state);
 763         }
 764         node = node->Next();
 765     }
 766     doc->GetCommandProcessor()->Submit(cmd);
 767 }
 768
 769 void csDiagramView::OnCutLinePoint(wxCommandEvent& event)
 770 {
 771     csDiagramDocument *doc = (csDiagramDocument *)GetDocument();
 772     csDiagramCommand* cmd = new csDiagramCommand("Cut line point", doc);
 773
 774     wxNode* node = m_selections.First();
 775     while (node)
 776     {
 777         wxShape* shape = (wxShape*) node->Data();
 778         if (shape->IsKindOf(CLASSINFO(wxLineShape)))
 779         {
 780             wxShape* newShape = shape->CreateNewCopy();
 781             ((wxLineShape*)newShape)->DeleteLineControlPoint();
 782             csCommandState* state = new csCommandState(ID_CS_CUT_POINT, newShape, shape);
 783             cmd->AddState(state);
 784         }
 785         node = node->Next();
 786     }
 787     doc->GetCommandProcessor()->Submit(cmd);
 788 }
 789
 790 void csDiagramView::OnStraightenLines(wxCommandEvent& event)
 791 {
 792     csDiagramDocument *doc = (csDiagramDocument *)GetDocument();
 793     csDiagramCommand* cmd = new csDiagramCommand("Straighten lines", doc);
 794
 795     wxNode* node = m_selections.First();
 796     while (node)
 797     {
 798         wxShape* shape = (wxShape*) node->Data();
 799         if (shape->IsKindOf(CLASSINFO(wxLineShape)))
 800         {
 801             wxShape* newShape = shape->CreateNewCopy();
 802             ((wxLineShape*)newShape)->Straighten();
 803             csCommandState* state = new csCommandState(ID_CS_STRAIGHTEN, newShape, shape);
 804             cmd->AddState(state);
 805         }
 806         node = node->Next();
 807     }
 808     doc->GetCommandProcessor()->Submit(cmd);
 809 }
 810
 811 void csDiagramView::OnNewLinePointUpdate(wxUpdateUIEvent& event)
 812 {
 813     wxList selections;
 814     FindSelectedShapes(selections, CLASSINFO(wxLineShape));
 815     event.Enable( (selections.Number() > 0) );
 816 }
 817
 818 void csDiagramView::OnCutLinePointUpdate(wxUpdateUIEvent& event)
 819 {
 820     wxList selections;
 821     FindSelectedShapes(selections, CLASSINFO(wxLineShape));
 822     event.Enable( (selections.Number() > 0) );
 823 }
 824
 825 void csDiagramView::OnStraightenLinesUpdate(wxUpdateUIEvent& event)
 826 {
 827     wxList selections;
 828     FindSelectedShapes(selections, CLASSINFO(wxLineShape));
 829     event.Enable( (selections.Number() > 0) );
 830 }
 831
 832 /*
 833  * Window implementations
 834  */
 835
 836 IMPLEMENT_CLASS(csCanvas, wxShapeCanvas)
 837
 838 BEGIN_EVENT_TABLE(csCanvas, wxShapeCanvas)
 839     EVT_MOUSE_EVENTS(csCanvas::OnMouseEvent)
 840     EVT_PAINT(csCanvas::OnPaint)
 841 END_EVENT_TABLE()
 842
 843 // Define a constructor for my canvas
 844 csCanvas::csCanvas(csDiagramView *v, wxWindow *parent, wxWindowID id, const wxPoint& pos,
 845     const wxSize& size, long style):
 846  wxShapeCanvas(parent, id, pos, size, style)
 847 {
 848   m_view = v;
 849 }
 850
 851 csCanvas::~csCanvas(void)
 852 {
 853 }
 854
 855 void csCanvas::DrawOutline(wxDC& dc, double x1, double y1, double x2, double y2)
 856 {
 857     wxPen dottedPen(wxColour(0, 0, 0), 1, wxDOT);
 858     dc.SetPen(dottedPen);
 859     dc.SetBrush(* wxTRANSPARENT_BRUSH);
 860
 861     dc.DrawRectangle((long) x1, (long) y1, (long) (x2 - x1), (long) (y2 - y1));
 862 }
 863
 864 void csCanvas::OnLeftClick(double x, double y, int keys)
 865 {
 866     csEditorToolPalette *palette = wxGetApp().GetDiagramPalette();
 867
 868     if (palette->GetSelection() == PALETTE_ARROW)
 869     {
 870         GetView()->SelectAll(FALSE);
 871
 872         wxClientDC dc(this);
 873         PrepareDC(dc);
 874
 875         Redraw(dc);
 876         return;
 877     }
 878
 879     if (palette->GetSelection() == PALETTE_TEXT_TOOL)
 880     {
 881         // Ask for a label and create a new free-floating text region
 882         csLabelEditingDialog* dialog = new csLabelEditingDialog(GetParent());
 883
 884         dialog->SetShapeLabel("");
 885         dialog->SetTitle("New text box");
 886         if (dialog->ShowModal() == wxID_CANCEL)
 887         {
 888             dialog->Destroy();
 889             return;
 890         }
 891
 892         wxString newLabel = dialog->GetShapeLabel();
 893         dialog->Destroy();
 894
 895         wxShape* shape = new csTextBoxShape;
 896         shape->AssignNewIds();
 897         shape->SetEventHandler(new csEvtHandler(shape, shape, newLabel));
 898
 899         wxComboBox* comboBox = wxGetApp().GetPointSizeComboBox();
 900         wxString str(comboBox->GetValue());
 901         int pointSize = atoi((const char*) str);
 902
 903         wxFont* newFont = wxTheFontList->FindOrCreateFont(pointSize,
 904                 shape->GetFont()->GetFamily(),
 905                 shape->GetFont()->GetStyle(),
 906                 shape->GetFont()->GetWeight(),
 907                 shape->GetFont()->GetUnderlined(),
 908                 shape->GetFont()->GetFaceName());
 909
 910         shape->SetFont(newFont);
 911
 912         shape->SetX(x);
 913         shape->SetY(y);
 914
 915         csDiagramCommand* cmd = new csDiagramCommand("Text box",
 916             (csDiagramDocument *)GetView()->GetDocument(),
 917             new csCommandState(ID_CS_ADD_SHAPE, shape, NULL));
 918         GetView()->GetDocument()->GetCommandProcessor()->Submit(cmd);
 919
 920         palette->SetSelection(PALETTE_ARROW);
 921
 922         return;
 923     }
 924
 925     csSymbol* symbol = wxGetApp().GetSymbolDatabase()->FindSymbol(palette->GetSelection());
 926     if (symbol)
 927     {
 928         wxShape* theShape = symbol->GetShape()->CreateNewCopy();
 929
 930         wxComboBox* comboBox = wxGetApp().GetPointSizeComboBox();
 931         wxString str(comboBox->GetValue());
 932         int pointSize = atoi((const char*) str);
 933
 934         wxFont* newFont = wxTheFontList->FindOrCreateFont(pointSize,
 935                 symbol->GetShape()->GetFont()->GetFamily(),
 936                 symbol->GetShape()->GetFont()->GetStyle(),
 937                 symbol->GetShape()->GetFont()->GetWeight(),
 938                 symbol->GetShape()->GetFont()->GetUnderlined(),
 939                 symbol->GetShape()->GetFont()->GetFaceName());
 940
 941         theShape->SetFont(newFont);
 942
 943         theShape->AssignNewIds();
 944         theShape->SetX(x);
 945         theShape->SetY(y);
 946
 947         csDiagramCommand* cmd = new csDiagramCommand(symbol->GetName(),
 948             (csDiagramDocument *)GetView()->GetDocument(),
 949             new csCommandState(ID_CS_ADD_SHAPE, theShape, NULL));
 950         GetView()->GetDocument()->GetCommandProcessor()->Submit(cmd);
 951
 952         palette->SetSelection(PALETTE_ARROW);
 953     }
 954 }
 955
 956 void csCanvas::OnRightClick(double x, double y, int keys)
 957 {
 958 }
 959
 960 // Initial point
 961 static double sg_initialX, sg_initialY;
 962
 963 void csCanvas::OnDragLeft(bool draw, double x, double y, int keys)
 964 {
 965     wxClientDC dc(this);
 966     PrepareDC(dc);
 967
 968     dc.SetLogicalFunction(OGLRBLF);
 969     DrawOutline(dc, sg_initialX, sg_initialY, x, y);
 970 }
 971
 972 void csCanvas::OnBeginDragLeft(double x, double y, int keys)
 973 {
 974     sg_initialX = x;
 975     sg_initialY = y;
 976
 977     wxClientDC dc(this);
 978     PrepareDC(dc);
 979
 980     dc.SetLogicalFunction(OGLRBLF);
 981     DrawOutline(dc, sg_initialX, sg_initialY, x, y);
 982     CaptureMouse();
 983 }
 984
 985 void csCanvas::OnEndDragLeft(double x, double y, int keys)
 986 {
 987     ReleaseMouse();
 988
 989     wxClientDC dc(this);
 990     PrepareDC(dc);
 991
 992     // Select all images within the rectangle
 993     float min_x, max_x, min_y, max_y;
 994     min_x = wxMin(x, sg_initialX);
 995     max_x = wxMax(x, sg_initialX);
 996     min_y = wxMin(y, sg_initialY);
 997     max_y = wxMax(y, sg_initialY);
 998
 999     wxNode *node = GetDiagram()->GetShapeList()->First();
1000     while (node)
1001     {
1002         wxShape *shape = (wxShape *)node->Data();
1003         if (shape->GetParent() == NULL && !shape->IsKindOf(CLASSINFO(wxControlPoint)))
1004         {
1005             float image_x = shape->GetX();
1006             float image_y = shape->GetY();
1007             if (image_x >= min_x && image_x <= max_x &&
1008                 image_y >= min_y && image_y <= max_y)
1009             {
1010                 shape->Select(TRUE, &dc);
1011                 GetView()->SelectShape(shape, TRUE);
1012             }
1013         }
1014         node = node->Next();
1015     }
1016 }
1017
1018 void csCanvas::OnDragRight(bool draw, double x, double y, int keys)
1019 {
1020 }
1021
1022 void csCanvas::OnBeginDragRight(double x, double y, int keys)
1023 {
1024 }
1025
1026 void csCanvas::OnEndDragRight(double x, double y, int keys)
1027 {
1028 }
1029
1030 void csCanvas::OnMouseEvent(wxMouseEvent& event)
1031 {
1032     wxShapeCanvas::OnMouseEvent(event);
1033 }
1034
1035 void csCanvas::OnPaint(wxPaintEvent& event)
1036 {
1037 //  if (GetDiagram())
1038     wxShapeCanvas::OnPaint(event);
1039 }