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     EVT_SIZE(MyChild::OnSize)
  89     EVT_MOVE(MyChild::OnMove)
  90
  91     EVT_CLOSE(MyChild::OnClose)
  92 END_EVENT_TABLE()
  93
  94 BEGIN_EVENT_TABLE(MyCanvas, wxScrolledWindow)
  95     EVT_MOUSE_EVENTS(MyCanvas::OnEvent)
  96 END_EVENT_TABLE()
  97
  98 // ===========================================================================
  99 // implementation
 100 // ===========================================================================
 101
 102 // ---------------------------------------------------------------------------
 103 // MyApp
 104 // ---------------------------------------------------------------------------
 105
 106 // Initialise this in OnInit, not statically
 107 bool MyApp::OnInit()
 108 {
 109     // Create the main frame window
 110
 111     frame = new MyFrame((wxFrame *)NULL, wxID_ANY, _T("MDI Demo"),
 112                         wxDefaultPosition, wxSize(500, 400),
 113                         wxDEFAULT_FRAME_STYLE | wxHSCROLL | wxVSCROLL);
 114 #ifdef __WXMSW__
 115 #if 0
 116     // Experimental: change the window menu
 117     wxMenu* windowMenu = new wxMenu;
 118     windowMenu->Append(5000, _T("My menu item!"));
 119     frame->SetWindowMenu(windowMenu);
 120 #endif
 121 #endif
 122
 123     // Give it an icon
 124 #ifdef __WXMSW__
 125     frame->SetIcon(wxIcon(_T("mdi_icn")));
 126 #else
 127     frame->SetIcon(wxIcon( mondrian_xpm ));
 128 #endif
 129
 130     // Make a menubar
 131     wxMenu *file_menu = new wxMenu;
 132
 133     file_menu->Append(MDI_NEW_WINDOW, _T("&New window\tCtrl-N"), _T("Create a new child window"));
 134     file_menu->Append(MDI_QUIT, _T("&Exit\tAlt-X"), _T("Quit the program"));
 135
 136     wxMenu *help_menu = new wxMenu;
 137     help_menu->Append(MDI_ABOUT, _T("&About\tF1"));
 138
 139     wxMenuBar *menu_bar = new wxMenuBar;
 140
 141     menu_bar->Append(file_menu, _T("&File"));
 142     menu_bar->Append(help_menu, _T("&Help"));
 143
 144     // Associate the menu bar with the frame
 145     frame->SetMenuBar(menu_bar);
 146
 147 #if wxUSE_STATUSBAR
 148     frame->CreateStatusBar();
 149 #endif // wxUSE_STATUSBAR
 150
 151     frame->Show(true);
 152
 153     SetTopWindow(frame);
 154
 155     return true;
 156 }
 157
 158 // ---------------------------------------------------------------------------
 159 // MyFrame
 160 // ---------------------------------------------------------------------------
 161
 162 // Define my frame constructor
 163 MyFrame::MyFrame(wxWindow *parent,
 164                  const wxWindowID id,
 165                  const wxString& title,
 166                  const wxPoint& pos,
 167                  const wxSize& size,
 168                  const long style)
 169        : wxMDIParentFrame(parent, id, title, pos, size,
 170                           style | wxNO_FULL_REPAINT_ON_RESIZE)
 171 {
 172     textWindow = new wxTextCtrl(this, wxID_ANY, _T("A help window"),
 173                                 wxDefaultPosition, wxDefaultSize,
 174                                 wxTE_MULTILINE | wxSUNKEN_BORDER);
 175
 176 #if wxUSE_TOOLBAR
 177     CreateToolBar(wxNO_BORDER | wxTB_FLAT | wxTB_HORIZONTAL);
 178     InitToolBar(GetToolBar());
 179 #endif // wxUSE_TOOLBAR
 180
 181     // Accelerators
 182     wxAcceleratorEntry entries[3];
 183     entries[0].Set(wxACCEL_CTRL, (int) 'N', MDI_NEW_WINDOW);
 184     entries[1].Set(wxACCEL_CTRL, (int) 'X', MDI_QUIT);
 185     entries[2].Set(wxACCEL_CTRL, (int) 'A', MDI_ABOUT);
 186     wxAcceleratorTable accel(3, entries);
 187     SetAcceleratorTable(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 #ifdef __WXMSW__
 232     subframe->SetIcon(wxIcon(_T("chrt_icn")));
 233 #else
 234     subframe->SetIcon(wxIcon( mondrian_xpm ));
 235 #endif
 236
 237 #if wxUSE_MENUS
 238     // Make a menubar
 239     wxMenu *file_menu = new wxMenu;
 240
 241     file_menu->Append(MDI_NEW_WINDOW, _T("&New window"));
 242     file_menu->Append(MDI_CHILD_QUIT, _T("&Close child"), _T("Close this window"));
 243     file_menu->Append(MDI_QUIT, _T("&Exit"));
 244
 245     wxMenu *option_menu = new wxMenu;
 246
 247     option_menu->Append(MDI_REFRESH, _T("&Refresh picture"));
 248     option_menu->Append(MDI_CHANGE_TITLE, _T("Change &title...\tCtrl-T"));
 249     option_menu->AppendSeparator();
 250     option_menu->Append(MDI_CHANGE_POSITION, _T("Move frame\tCtrl-M"));
 251     option_menu->Append(MDI_CHANGE_SIZE, _T("Resize frame\tCtrl-S"));
 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] = new wxBitmap( new_xpm );
 311     bitmaps[1] = new wxBitmap( open_xpm );
 312     bitmaps[2] = new wxBitmap( save_xpm );
 313     bitmaps[3] = new wxBitmap( copy_xpm );
 314     bitmaps[4] = new wxBitmap( cut_xpm );
 315     bitmaps[5] = new wxBitmap( paste_xpm );
 316     bitmaps[6] = new wxBitmap( print_xpm );
 317     bitmaps[7] = new wxBitmap( help_xpm );
 318
 319     int width = 24;
 320     int currentX = 5;
 321
 322     toolBar->AddTool( MDI_NEW_WINDOW, *(bitmaps[0]), wxNullBitmap, false, currentX, wxDefaultCoord, (wxObject *) NULL, _T("New file"));
 323     currentX += width + 5;
 324     toolBar->AddTool(1, *bitmaps[1], wxNullBitmap, false, currentX, wxDefaultCoord, (wxObject *) NULL, _T("Open file"));
 325     currentX += width + 5;
 326     toolBar->AddTool(2, *bitmaps[2], wxNullBitmap, false, currentX, wxDefaultCoord, (wxObject *) NULL, _T("Save file"));
 327     currentX += width + 5;
 328     toolBar->AddSeparator();
 329     toolBar->AddTool(3, *bitmaps[3], wxNullBitmap, false, currentX, wxDefaultCoord, (wxObject *) NULL, _T("Copy"));
 330     currentX += width + 5;
 331     toolBar->AddTool(4, *bitmaps[4], wxNullBitmap, false, currentX, wxDefaultCoord, (wxObject *) NULL, _T("Cut"));
 332     currentX += width + 5;
 333     toolBar->AddTool(5, *bitmaps[5], wxNullBitmap, false, currentX, wxDefaultCoord, (wxObject *) NULL, _T("Paste"));
 334     currentX += width + 5;
 335     toolBar->AddSeparator();
 336     toolBar->AddTool(6, *bitmaps[6], wxNullBitmap, false, currentX, wxDefaultCoord, (wxObject *) NULL, _T("Print"));
 337     currentX += width + 5;
 338     toolBar->AddSeparator();
 339     toolBar->AddTool( MDI_ABOUT, *bitmaps[7], wxNullBitmap, true, currentX, wxDefaultCoord, (wxObject *) NULL, _T("Help"));
 340
 341     toolBar->Realize();
 342
 343     int i;
 344     for (i = 0; i < 8; i++)
 345         delete bitmaps[i];
 346 }
 347 #endif // wxUSE_TOOLBAR
 348
 349 // ---------------------------------------------------------------------------
 350 // MyCanvas
 351 // ---------------------------------------------------------------------------
 352
 353 // Define a constructor for my canvas
 354 MyCanvas::MyCanvas(wxWindow *parent, const wxPoint& pos, const wxSize& size)
 355         : wxScrolledWindow(parent, wxID_ANY, pos, size,
 356                            wxSUNKEN_BORDER |
 357                            wxNO_FULL_REPAINT_ON_RESIZE |
 358                            wxVSCROLL | wxHSCROLL)
 359 {
 360     SetBackgroundColour(wxColour(_T("WHITE")));
 361
 362     m_dirty = false;
 363 }
 364
 365 // Define the repainting behaviour
 366 void MyCanvas::OnDraw(wxDC& dc)
 367 {
 368     dc.SetFont(*wxSWISS_FONT);
 369     dc.SetPen(*wxGREEN_PEN);
 370     dc.DrawLine(0, 0, 200, 200);
 371     dc.DrawLine(200, 0, 0, 200);
 372
 373     dc.SetBrush(*wxCYAN_BRUSH);
 374     dc.SetPen(*wxRED_PEN);
 375     dc.DrawRectangle(100, 100, 100, 50);
 376     dc.DrawRoundedRectangle(150, 150, 100, 50, 20);
 377
 378     dc.DrawEllipse(250, 250, 100, 50);
 379 #if wxUSE_SPLINES
 380     dc.DrawSpline(50, 200, 50, 100, 200, 10);
 381 #endif // wxUSE_SPLINES
 382     dc.DrawLine(50, 230, 200, 230);
 383     dc.DrawText(_T("This is a test string"), 50, 230);
 384
 385     wxPoint points[3];
 386     points[0].x = 200; points[0].y = 300;
 387     points[1].x = 100; points[1].y = 400;
 388     points[2].x = 300; points[2].y = 400;
 389
 390     dc.DrawPolygon(3, points);
 391 }
 392
 393 // This implements a tiny doodling program! Drag the mouse using the left
 394 // button.
 395 void MyCanvas::OnEvent(wxMouseEvent& event)
 396 {
 397     wxClientDC dc(this);
 398     PrepareDC(dc);
 399
 400     wxPoint pt(event.GetLogicalPosition(dc));
 401
 402     if (xpos > -1 && ypos > -1 && event.Dragging())
 403     {
 404         dc.SetPen(*wxBLACK_PEN);
 405         dc.DrawLine(xpos, ypos, pt.x, pt.y);
 406
 407         m_dirty = true;
 408     }
 409
 410     xpos = pt.x;
 411     ypos = pt.y;
 412 }
 413
 414 // ---------------------------------------------------------------------------
 415 // MyChild
 416 // ---------------------------------------------------------------------------
 417
 418 MyChild::MyChild(wxMDIParentFrame *parent, const wxString& title)
 419        : wxMDIChildFrame(parent, wxID_ANY, title, wxDefaultPosition, wxDefaultSize,
 420                          wxDEFAULT_FRAME_STYLE | wxNO_FULL_REPAINT_ON_RESIZE)
 421 {
 422     canvas = (MyCanvas *) NULL;
 423     my_children.Append(this);
 424
 425     // this should work for MDI frames as well as for normal ones
 426     SetSizeHints(100, 100);
 427 }
 428
 429 MyChild::~MyChild()
 430 {
 431     my_children.DeleteObject(this);
 432 }
 433
 434 void MyChild::OnQuit(wxCommandEvent& WXUNUSED(event))
 435 {
 436     Close(true);
 437 }
 438
 439 void MyChild::OnRefresh(wxCommandEvent& WXUNUSED(event))
 440 {
 441     if ( canvas )
 442         canvas->Refresh();
 443 }
 444
 445 void MyChild::OnChangePosition(wxCommandEvent& WXUNUSED(event))
 446 {
 447     Move(10, 10);
 448 }
 449
 450 void MyChild::OnChangeSize(wxCommandEvent& WXUNUSED(event))
 451 {
 452     SetClientSize(100, 100);
 453 }
 454
 455 void MyChild::OnChangeTitle(wxCommandEvent& WXUNUSED(event))
 456 {
 457 //#if wxUSE_TEXTDLG
 458     static wxString s_title = _T("Canvas Frame");
 459
 460     wxString title = wxGetTextFromUser(_T("Enter the new title for MDI child"),
 461                                        _T("MDI sample question"),
 462                                        s_title,
 463                                        GetParent()->GetParent());
 464     if ( !title )
 465         return;
 466
 467     s_title = title;
 468     SetTitle(s_title);
 469 //#endif
 470 }
 471
 472 void MyChild::OnActivate(wxActivateEvent& event)
 473 {
 474     if ( event.GetActive() && canvas )
 475         canvas->SetFocus();
 476 }
 477
 478 void MyChild::OnMove(wxMoveEvent& event)
 479 {
 480     // VZ: here everything is totally wrong under MSW, the positions are
 481     //     different and both wrong (pos2 is off by 2 pixels for me which seems
 482     //     to be the width of the MDI canvas border)
 483     wxPoint pos1 = event.GetPosition(),
 484             pos2 = GetPosition();
 485     wxLogStatus(wxT("position from event: (%d, %d), from frame (%d, %d)"),
 486                 pos1.x, pos1.y, pos2.x, pos2.y);
 487
 488     event.Skip();
 489 }
 490
 491 void MyChild::OnSize(wxSizeEvent& event)
 492 {
 493     // VZ: under MSW the size event carries the client size (quite
 494     //     unexpectedly) *except* for the very first one which has the full
 495     //     size... what should it really be? TODO: check under wxGTK
 496     wxSize size1 = event.GetSize(),
 497            size2 = GetSize(),
 498            size3 = GetClientSize();
 499     wxLogStatus(wxT("size from event: %dx%d, from frame %dx%d, client %dx%d"),
 500                 size1.x, size1.y, size2.x, size2.y, size3.x, size3.y);
 501
 502     event.Skip();
 503 }
 504
 505 void MyChild::OnClose(wxCloseEvent& event)
 506 {
 507     if ( canvas && canvas->IsDirty() )
 508     {
 509         if ( wxMessageBox(_T("Really close?"), _T("Please confirm"),
 510                           wxICON_QUESTION | wxYES_NO) != wxYES )
 511         {
 512             event.Veto();
 513
 514             return;
 515         }
 516     }
 517
 518     gs_nFrames--;
 519
 520     event.Skip();
 521 }
 522
 523