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