samples/mdi/mdi.cpp

   1 /////////////////////////////////////////////////////////////////////////////
   2 // Name:        mdi.cpp
   3 // Purpose:     MDI sample
   4 // Author:      Julian Smart
   5 // Modified by:
   6 // Created:     04/01/98
   7 // RCS-ID:      $Id$
   8 // Copyright:   (c) Julian Smart
   9 // Licence:     wxWindows license
  10 /////////////////////////////////////////////////////////////////////////////
  11
  12 // ===========================================================================
  13 // declarations
  14 // ===========================================================================
  15
  16 // ---------------------------------------------------------------------------
  17 // headers
  18 // ---------------------------------------------------------------------------
  19
  20 // For compilers that support precompilation, includes "wx/wx.h".
  21 #include "wx/wxprec.h"
  22
  23 #ifdef __BORLANDC__
  24     #pragma hdrstop
  25 #endif
  26
  27 #ifndef WX_PRECOMP
  28     #include "wx/wx.h"
  29     #include "wx/mdi.h"
  30 #endif
  31
  32 #include "wx/toolbar.h"
  33
  34 #if !defined(__WXMSW__)
  35     #include "mondrian.xpm"
  36 #endif
  37
  38 #include "bitmaps/new.xpm"
  39 #include "bitmaps/open.xpm"
  40 #include "bitmaps/save.xpm"
  41 #include "bitmaps/copy.xpm"
  42 #include "bitmaps/cut.xpm"
  43 #include "bitmaps/paste.xpm"
  44 #include "bitmaps/print.xpm"
  45 #include "bitmaps/help.xpm"
  46
  47
  48 #include "mdi.h"
  49
  50 IMPLEMENT_APP(MyApp)
  51
  52 // ---------------------------------------------------------------------------
  53 // global variables
  54 // ---------------------------------------------------------------------------
  55
  56 MyFrame *frame = (MyFrame *) NULL;
  57 wxList my_children;
  58
  59 // For drawing lines in a canvas
  60 static long xpos = -1;
  61 static long ypos = -1;
  62
  63 static int gs_nFrames = 0;
  64
  65 // ---------------------------------------------------------------------------
  66 // event tables
  67 // ---------------------------------------------------------------------------
  68
  69 BEGIN_EVENT_TABLE(MyFrame, wxMDIParentFrame)
  70     EVT_MENU(MDI_ABOUT, MyFrame::OnAbout)
  71     EVT_MENU(MDI_NEW_WINDOW, MyFrame::OnNewWindow)
  72     EVT_MENU(MDI_QUIT, MyFrame::OnQuit)
  73
  74     EVT_CLOSE(MyFrame::OnClose)
  75     EVT_SIZE(MyFrame::OnSize)
  76 END_EVENT_TABLE()
  77
  78 // Note that MDI_NEW_WINDOW and MDI_ABOUT commands get passed
  79 // to the parent window for processing, so no need to
  80 // duplicate event handlers here.
  81 BEGIN_EVENT_TABLE(MyChild, wxMDIChildFrame)
  82     EVT_MENU(MDI_CHILD_QUIT, MyChild::OnQuit)
  83     EVT_MENU(MDI_REFRESH, MyChild::OnRefresh)
  84     EVT_MENU(MDI_CHANGE_TITLE, MyChild::OnChangeTitle)
  85     EVT_MENU(MDI_CHANGE_POSITION, MyChild::OnChangePosition)
  86     EVT_MENU(MDI_CHANGE_SIZE, MyChild::OnChangeSize)
  87
  88 #if wxUSE_CLIPBOARD
  89     EVT_MENU(wxID_PASTE, MyChild::OnPaste)
  90     EVT_UPDATE_UI(wxID_PASTE, MyChild::OnUpdatePaste)
  91 #endif // wxUSE_CLIPBOARD
  92
  93     EVT_SIZE(MyChild::OnSize)
  94     EVT_MOVE(MyChild::OnMove)
  95
  96     EVT_CLOSE(MyChild::OnClose)
  97 END_EVENT_TABLE()
  98
  99 BEGIN_EVENT_TABLE(MyCanvas, wxScrolledWindow)
 100     EVT_MOUSE_EVENTS(MyCanvas::OnEvent)
 101 END_EVENT_TABLE()
 102
 103 // ===========================================================================
 104 // implementation
 105 // ===========================================================================
 106
 107 // ---------------------------------------------------------------------------
 108 // MyApp
 109 // ---------------------------------------------------------------------------
 110
 111 // Initialise this in OnInit, not statically
 112 bool MyApp::OnInit()
 113 {
 114     // Create the main frame window
 115
 116     frame = new MyFrame((wxFrame *)NULL, wxID_ANY, _T("MDI Demo"),
 117                         wxDefaultPosition, wxSize(500, 400),
 118                         wxDEFAULT_FRAME_STYLE | wxHSCROLL | wxVSCROLL);
 119 #if 0
 120     // Experimental: change the window menu
 121     wxMenu* windowMenu = new wxMenu;
 122     windowMenu->Append(5000, _T("My menu item!"));
 123     frame->SetWindowMenu(windowMenu);
 124 #endif
 125
 126     // Give it an icon
 127     frame->SetIcon(wxICON(sample));
 128
 129     // Make a menubar
 130     wxMenu *file_menu = new wxMenu;
 131
 132     file_menu->Append(MDI_NEW_WINDOW, _T("&New window\tCtrl-N"), _T("Create a new child window"));
 133     file_menu->Append(MDI_QUIT, _T("&Exit\tAlt-X"), _T("Quit the program"));
 134
 135     wxMenu *help_menu = new wxMenu;
 136     help_menu->Append(MDI_ABOUT, _T("&About\tF1"));
 137
 138     wxMenuBar *menu_bar = new wxMenuBar;
 139
 140     menu_bar->Append(file_menu, _T("&File"));
 141     menu_bar->Append(help_menu, _T("&Help"));
 142
 143     // Associate the menu bar with the frame
 144     frame->SetMenuBar(menu_bar);
 145
 146 #if wxUSE_STATUSBAR
 147     frame->CreateStatusBar();
 148 #endif // wxUSE_STATUSBAR
 149
 150     frame->Show(true);
 151
 152     SetTopWindow(frame);
 153
 154     return true;
 155 }
 156
 157 // ---------------------------------------------------------------------------
 158 // MyFrame
 159 // ---------------------------------------------------------------------------
 160
 161 // Define my frame constructor
 162 MyFrame::MyFrame(wxWindow *parent,
 163                  const wxWindowID id,
 164                  const wxString& title,
 165                  const wxPoint& pos,
 166                  const wxSize& size,
 167                  const long style)
 168        : wxMDIParentFrame(parent, id, title, pos, size, style)
 169 {
 170     textWindow = new wxTextCtrl(this, wxID_ANY, _T("A help window"),
 171                                 wxDefaultPosition, wxDefaultSize,
 172                                 wxTE_MULTILINE | wxSUNKEN_BORDER);
 173
 174 #if wxUSE_TOOLBAR
 175     CreateToolBar(wxNO_BORDER | wxTB_FLAT | wxTB_HORIZONTAL);
 176     InitToolBar(GetToolBar());
 177 #endif // wxUSE_TOOLBAR
 178
 179 #if wxUSE_ACCEL
 180     // Accelerators
 181     wxAcceleratorEntry entries[3];
 182     entries[0].Set(wxACCEL_CTRL, (int) 'N', MDI_NEW_WINDOW);
 183     entries[1].Set(wxACCEL_CTRL, (int) 'X', MDI_QUIT);
 184     entries[2].Set(wxACCEL_CTRL, (int) 'A', MDI_ABOUT);
 185     wxAcceleratorTable accel(3, entries);
 186     SetAcceleratorTable(accel);
 187 #endif // wxUSE_ACCEL
 188 }
 189
 190 void MyFrame::OnClose(wxCloseEvent& event)
 191 {
 192     if ( event.CanVeto() && (gs_nFrames > 0) )
 193     {
 194         wxString msg;
 195         msg.Printf(_T("%d windows still open, close anyhow?"), gs_nFrames);
 196         if ( wxMessageBox(msg, _T("Please confirm"),
 197                           wxICON_QUESTION | wxYES_NO) != wxYES )
 198         {
 199             event.Veto();
 200
 201             return;
 202         }
 203     }
 204
 205     event.Skip();
 206 }
 207
 208 void MyFrame::OnQuit(wxCommandEvent& WXUNUSED(event))
 209 {
 210     Close();
 211 }
 212
 213 void MyFrame::OnAbout(wxCommandEvent& WXUNUSED(event) )
 214 {
 215     (void)wxMessageBox(_T("wxWidgets 2.0 MDI Demo\n")
 216                        _T("Author: Julian Smart (c) 1997\n")
 217                        _T("Usage: mdi.exe"), _T("About MDI Demo"));
 218 }
 219
 220 void MyFrame::OnNewWindow(wxCommandEvent& WXUNUSED(event) )
 221 {
 222     // Make another frame, containing a canvas
 223     MyChild *subframe = new MyChild(frame, _T("Canvas Frame"));
 224
 225     wxString title;
 226     title.Printf(_T("Canvas Frame %d"), ++gs_nFrames);
 227
 228     subframe->SetTitle(title);
 229
 230     // Give it an icon
 231     subframe->SetIcon(wxICON(chart));
 232
 233 #if wxUSE_MENUS
 234     // Make a menubar
 235     wxMenu *file_menu = new wxMenu;
 236
 237     file_menu->Append(MDI_NEW_WINDOW, _T("&New window"));
 238     file_menu->Append(MDI_CHILD_QUIT, _T("&Close child"), _T("Close this window"));
 239     file_menu->Append(MDI_QUIT, _T("&Exit"));
 240
 241     wxMenu *option_menu = new wxMenu;
 242
 243     option_menu->Append(MDI_REFRESH, _T("&Refresh picture"));
 244     option_menu->Append(MDI_CHANGE_TITLE, _T("Change &title...\tCtrl-T"));
 245     option_menu->AppendSeparator();
 246     option_menu->Append(MDI_CHANGE_POSITION, _T("Move frame\tCtrl-M"));
 247     option_menu->Append(MDI_CHANGE_SIZE, _T("Resize frame\tCtrl-S"));
 248 #if wxUSE_CLIPBOARD
 249     option_menu->AppendSeparator();
 250     option_menu->Append(wxID_PASTE, _T("Copy text from clipboard\tCtrl-V"));
 251 #endif // wxUSE_CLIPBOARD
 252
 253     wxMenu *help_menu = new wxMenu;
 254     help_menu->Append(MDI_ABOUT, _T("&About"));
 255
 256     wxMenuBar *menu_bar = new wxMenuBar;
 257
 258     menu_bar->Append(file_menu, _T("&File"));
 259     menu_bar->Append(option_menu, _T("&Child"));
 260     menu_bar->Append(help_menu, _T("&Help"));
 261
 262     // Associate the menu bar with the frame
 263     subframe->SetMenuBar(menu_bar);
 264 #endif // wxUSE_MENUS
 265
 266 #if wxUSE_STATUSBAR
 267     subframe->CreateStatusBar();
 268     subframe->SetStatusText(title);
 269 #endif // wxUSE_STATUSBAR
 270
 271     int width, height;
 272     subframe->GetClientSize(&width, &height);
 273     MyCanvas *canvas = new MyCanvas(subframe, wxPoint(0, 0), wxSize(width, height));
 274     canvas->SetCursor(wxCursor(wxCURSOR_PENCIL));
 275     subframe->canvas = canvas;
 276
 277     // Give it scrollbars
 278     canvas->SetScrollbars(20, 20, 50, 50);
 279
 280     subframe->Show(true);
 281 }
 282
 283 void MyFrame::OnSize(wxSizeEvent&
 284                                   #ifdef __WXUNIVERSAL__
 285                                   event
 286                                   #else
 287                                   WXUNUSED(event)
 288                                   #endif
 289                                   )
 290 {
 291     int w, h;
 292     GetClientSize(&w, &h);
 293
 294     textWindow->SetSize(0, 0, 200, h);
 295     GetClientWindow()->SetSize(200, 0, w - 200, h);
 296
 297     // FIXME: On wxX11, we need the MDI frame to process this
 298     // event, but on other platforms this should not
 299     // be done.
 300 #ifdef __WXUNIVERSAL__
 301     event.Skip();
 302 #endif
 303 }
 304
 305 #if wxUSE_TOOLBAR
 306 void MyFrame::InitToolBar(wxToolBar* toolBar)
 307 {
 308     wxBitmap bitmaps[8];
 309
 310     bitmaps[0] = wxBitmap( new_xpm );
 311     bitmaps[1] = wxBitmap( open_xpm );
 312     bitmaps[2] = wxBitmap( save_xpm );
 313     bitmaps[3] = wxBitmap( copy_xpm );
 314     bitmaps[4] = wxBitmap( cut_xpm );
 315     bitmaps[5] = wxBitmap( paste_xpm );
 316     bitmaps[6] = wxBitmap( print_xpm );
 317     bitmaps[7] = wxBitmap( help_xpm );
 318
 319     toolBar->AddTool(MDI_NEW_WINDOW, _T("New"), bitmaps[0], _T("New file"));
 320     toolBar->AddTool(1, _T("Open"), bitmaps[1], _T("Open file"));
 321     toolBar->AddTool(2, _T("Save"), bitmaps[2], _T("Save file"));
 322     toolBar->AddSeparator();
 323     toolBar->AddTool(3, _T("Copy"), bitmaps[3], _T("Copy"));
 324     toolBar->AddTool(4, _T("Cut"), bitmaps[4], _T("Cut"));
 325     toolBar->AddTool(5, _T("Paste"), bitmaps[5], _T("Paste"));
 326     toolBar->AddSeparator();
 327     toolBar->AddTool(6, _T("Print"), bitmaps[6], _T("Print"));
 328     toolBar->AddSeparator();
 329     toolBar->AddTool(MDI_ABOUT, _T("About"), bitmaps[7], _T("Help"));
 330
 331     toolBar->Realize();
 332 }
 333 #endif // wxUSE_TOOLBAR
 334
 335 // ---------------------------------------------------------------------------
 336 // MyCanvas
 337 // ---------------------------------------------------------------------------
 338
 339 // Define a constructor for my canvas
 340 MyCanvas::MyCanvas(wxWindow *parent, const wxPoint& pos, const wxSize& size)
 341         : wxScrolledWindow(parent, wxID_ANY, pos, size,
 342                            wxSUNKEN_BORDER |
 343                            wxNO_FULL_REPAINT_ON_RESIZE |
 344                            wxVSCROLL | wxHSCROLL)
 345 {
 346     SetBackgroundColour(wxColour(_T("WHITE")));
 347
 348     m_dirty = false;
 349 }
 350
 351 // Define the repainting behaviour
 352 void MyCanvas::OnDraw(wxDC& dc)
 353 {
 354     if ( !m_text.empty() )
 355         dc.DrawText(m_text, 10, 10);
 356
 357     dc.SetFont(*wxSWISS_FONT);
 358     dc.SetPen(*wxGREEN_PEN);
 359     dc.DrawLine(0, 0, 200, 200);
 360     dc.DrawLine(200, 0, 0, 200);
 361
 362     dc.SetBrush(*wxCYAN_BRUSH);
 363     dc.SetPen(*wxRED_PEN);
 364     dc.DrawRectangle(100, 100, 100, 50);
 365     dc.DrawRoundedRectangle(150, 150, 100, 50, 20);
 366
 367     dc.DrawEllipse(250, 250, 100, 50);
 368 #if wxUSE_SPLINES
 369     dc.DrawSpline(50, 200, 50, 100, 200, 10);
 370 #endif // wxUSE_SPLINES
 371     dc.DrawLine(50, 230, 200, 230);
 372     dc.DrawText(_T("This is a test string"), 50, 230);
 373
 374     wxPoint points[3];
 375     points[0].x = 200; points[0].y = 300;
 376     points[1].x = 100; points[1].y = 400;
 377     points[2].x = 300; points[2].y = 400;
 378
 379     dc.DrawPolygon(3, points);
 380 }
 381
 382 // This implements a tiny doodling program! Drag the mouse using the left
 383 // button.
 384 void MyCanvas::OnEvent(wxMouseEvent& event)
 385 {
 386     wxClientDC dc(this);
 387     PrepareDC(dc);
 388
 389     wxPoint pt(event.GetLogicalPosition(dc));
 390
 391     if (xpos > -1 && ypos > -1 && event.Dragging())
 392     {
 393         dc.SetPen(*wxBLACK_PEN);
 394         dc.DrawLine(xpos, ypos, pt.x, pt.y);
 395
 396         m_dirty = true;
 397     }
 398
 399     xpos = pt.x;
 400     ypos = pt.y;
 401 }
 402
 403 // ---------------------------------------------------------------------------
 404 // MyChild
 405 // ---------------------------------------------------------------------------
 406
 407 MyChild::MyChild(wxMDIParentFrame *parent, const wxString& title)
 408        : wxMDIChildFrame(parent, wxID_ANY, title, wxDefaultPosition, wxDefaultSize,
 409                          wxDEFAULT_FRAME_STYLE | wxNO_FULL_REPAINT_ON_RESIZE)
 410 {
 411     canvas = (MyCanvas *) NULL;
 412     my_children.Append(this);
 413
 414     // this should work for MDI frames as well as for normal ones
 415     SetSizeHints(100, 100);
 416 }
 417
 418 MyChild::~MyChild()
 419 {
 420     my_children.DeleteObject(this);
 421 }
 422
 423 void MyChild::OnQuit(wxCommandEvent& WXUNUSED(event))
 424 {
 425     Close(true);
 426 }
 427
 428 void MyChild::OnRefresh(wxCommandEvent& WXUNUSED(event))
 429 {
 430     if ( canvas )
 431         canvas->Refresh();
 432 }
 433
 434 void MyChild::OnChangePosition(wxCommandEvent& WXUNUSED(event))
 435 {
 436     Move(10, 10);
 437 }
 438
 439 void MyChild::OnChangeSize(wxCommandEvent& WXUNUSED(event))
 440 {
 441     SetClientSize(100, 100);
 442 }
 443
 444 void MyChild::OnChangeTitle(wxCommandEvent& WXUNUSED(event))
 445 {
 446 #if wxUSE_TEXTDLG
 447     static wxString s_title = _T("Canvas Frame");
 448
 449     wxString title = wxGetTextFromUser(_T("Enter the new title for MDI child"),
 450                                        _T("MDI sample question"),
 451                                        s_title,
 452                                        GetParent()->GetParent());
 453     if ( !title )
 454         return;
 455
 456     s_title = title;
 457     SetTitle(s_title);
 458 #endif // wxUSE_TEXTDLG
 459 }
 460
 461 void MyChild::OnActivate(wxActivateEvent& event)
 462 {
 463     if ( event.GetActive() && canvas )
 464         canvas->SetFocus();
 465 }
 466
 467 void MyChild::OnMove(wxMoveEvent& event)
 468 {
 469     // VZ: here everything is totally wrong under MSW, the positions are
 470     //     different and both wrong (pos2 is off by 2 pixels for me which seems
 471     //     to be the width of the MDI canvas border)
 472     wxPoint pos1 = event.GetPosition(),
 473             pos2 = GetPosition();
 474     wxLogStatus(wxT("position from event: (%d, %d), from frame (%d, %d)"),
 475                 pos1.x, pos1.y, pos2.x, pos2.y);
 476
 477     event.Skip();
 478 }
 479
 480 void MyChild::OnSize(wxSizeEvent& event)
 481 {
 482     // VZ: under MSW the size event carries the client size (quite
 483     //     unexpectedly) *except* for the very first one which has the full
 484     //     size... what should it really be? TODO: check under wxGTK
 485     wxSize size1 = event.GetSize(),
 486            size2 = GetSize(),
 487            size3 = GetClientSize();
 488     wxLogStatus(wxT("size from event: %dx%d, from frame %dx%d, client %dx%d"),
 489                 size1.x, size1.y, size2.x, size2.y, size3.x, size3.y);
 490
 491     event.Skip();
 492 }
 493
 494 void MyChild::OnClose(wxCloseEvent& event)
 495 {
 496     if ( canvas && canvas->IsDirty() )
 497     {
 498         if ( wxMessageBox(_T("Really close?"), _T("Please confirm"),
 499                           wxICON_QUESTION | wxYES_NO) != wxYES )
 500         {
 501             event.Veto();
 502
 503             return;
 504         }
 505     }
 506
 507     gs_nFrames--;
 508
 509     event.Skip();
 510 }
 511
 512 #if wxUSE_CLIPBOARD
 513
 514 #include "wx/clipbrd.h"
 515
 516 void MyChild::OnPaste(wxCommandEvent& WXUNUSED(event))
 517 {
 518     wxClipboardLocker lock;
 519     wxTextDataObject data;
 520     canvas->SetText(wxTheClipboard->GetData(data) ? data.GetText().c_str()
 521                                                   : _T("No text on clipboard"));
 522 }
 523
 524 void MyChild::OnUpdatePaste(wxUpdateUIEvent& event)
 525 {
 526     wxClipboardLocker lock;
 527     event.Enable( wxTheClipboard->IsSupported(wxDF_TEXT) );
 528 }
 529
 530 #endif // wxUSE_CLIPBOARD