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 #if wxUSE_STATUSBAR
 149     frame->CreateStatusBar();
 150 #endif // wxUSE_STATUSBAR
 151
 152     frame->Show(true);
 153
 154     SetTopWindow(frame);
 155
 156     return true;
 157 }
 158
 159 // ---------------------------------------------------------------------------
 160 // MyFrame
 161 // ---------------------------------------------------------------------------
 162
 163 // Define my frame constructor
 164 MyFrame::MyFrame(wxWindow *parent,
 165                  const wxWindowID id,
 166                  const wxString& title,
 167                  const wxPoint& pos,
 168                  const wxSize& size,
 169                  const long style)
 170        : wxMDIParentFrame(parent, id, title, pos, size,
 171                           style | wxNO_FULL_REPAINT_ON_RESIZE)
 172 {
 173     textWindow = new wxTextCtrl(this, wxID_ANY, _T("A help window"),
 174                                 wxDefaultPosition, wxDefaultSize,
 175                                 wxTE_MULTILINE | wxSUNKEN_BORDER);
 176
 177 #if wxUSE_TOOLBAR
 178     CreateToolBar(wxNO_BORDER | wxTB_FLAT | wxTB_HORIZONTAL);
 179     InitToolBar(GetToolBar());
 180 #endif // wxUSE_TOOLBAR
 181
 182     // Accelerators
 183     wxAcceleratorEntry entries[3];
 184     entries[0].Set(wxACCEL_CTRL, (int) 'N', MDI_NEW_WINDOW);
 185     entries[1].Set(wxACCEL_CTRL, (int) 'X', MDI_QUIT);
 186     entries[2].Set(wxACCEL_CTRL, (int) 'A', MDI_ABOUT);
 187     wxAcceleratorTable accel(3, entries);
 188     SetAcceleratorTable(accel);
 189 }
 190
 191 void MyFrame::OnClose(wxCloseEvent& event)
 192 {
 193     if ( event.CanVeto() && (gs_nFrames > 0) )
 194     {
 195         wxString msg;
 196         msg.Printf(_T("%d windows still open, close anyhow?"), gs_nFrames);
 197         if ( wxMessageBox(msg, _T("Please confirm"),
 198                           wxICON_QUESTION | wxYES_NO) != wxYES )
 199         {
 200             event.Veto();
 201
 202             return;
 203         }
 204     }
 205
 206     event.Skip();
 207 }
 208
 209 void MyFrame::OnQuit(wxCommandEvent& WXUNUSED(event))
 210 {
 211     Close();
 212 }
 213
 214 void MyFrame::OnAbout(wxCommandEvent& WXUNUSED(event) )
 215 {
 216     (void)wxMessageBox(_T("wxWidgets 2.0 MDI Demo\n")
 217                        _T("Author: Julian Smart (c) 1997\n")
 218                        _T("Usage: mdi.exe"), _T("About MDI Demo"));
 219 }
 220
 221 void MyFrame::OnNewWindow(wxCommandEvent& WXUNUSED(event) )
 222 {
 223     // Make another frame, containing a canvas
 224     MyChild *subframe = new MyChild(frame, _T("Canvas Frame"));
 225
 226     wxString title;
 227     title.Printf(_T("Canvas Frame %d"), ++gs_nFrames);
 228
 229     subframe->SetTitle(title);
 230
 231     // Give it an icon
 232 #ifdef __WXMSW__
 233     subframe->SetIcon(wxIcon(_T("chrt_icn")));
 234 #else
 235     subframe->SetIcon(wxIcon( mondrian_xpm ));
 236 #endif
 237
 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
 265 #if wxUSE_STATUSBAR
 266     subframe->CreateStatusBar();
 267     subframe->SetStatusText(title);
 268 #endif // wxUSE_STATUSBAR
 269
 270     int width, height;
 271     subframe->GetClientSize(&width, &height);
 272     MyCanvas *canvas = new MyCanvas(subframe, wxPoint(0, 0), wxSize(width, height));
 273     canvas->SetCursor(wxCursor(wxCURSOR_PENCIL));
 274     subframe->canvas = canvas;
 275
 276     // Give it scrollbars
 277     canvas->SetScrollbars(20, 20, 50, 50);
 278
 279     subframe->Show(true);
 280 }
 281
 282 void MyFrame::OnSize(wxSizeEvent&
 283                                   #ifdef __WXUNIVERSAL__
 284                                   event
 285                                   #else
 286                                   WXUNUSED(event)
 287                                   #endif
 288                                   )
 289 {
 290     int w, h;
 291     GetClientSize(&w, &h);
 292
 293     textWindow->SetSize(0, 0, 200, h);
 294     GetClientWindow()->SetSize(200, 0, w - 200, h);
 295
 296     // FIXME: On wxX11, we need the MDI frame to process this
 297     // event, but on other platforms this should not
 298     // be done.
 299 #ifdef __WXUNIVERSAL__
 300     event.Skip();
 301 #endif
 302 }
 303
 304 #if wxUSE_TOOLBAR
 305 void MyFrame::InitToolBar(wxToolBar* toolBar)
 306 {
 307     wxBitmap* bitmaps[8];
 308
 309     bitmaps[0] = new wxBitmap( new_xpm );
 310     bitmaps[1] = new wxBitmap( open_xpm );
 311     bitmaps[2] = new wxBitmap( save_xpm );
 312     bitmaps[3] = new wxBitmap( copy_xpm );
 313     bitmaps[4] = new wxBitmap( cut_xpm );
 314     bitmaps[5] = new wxBitmap( paste_xpm );
 315     bitmaps[6] = new wxBitmap( print_xpm );
 316     bitmaps[7] = new wxBitmap( help_xpm );
 317
 318     int width = 24;
 319     int currentX = 5;
 320
 321     toolBar->AddTool( MDI_NEW_WINDOW, *(bitmaps[0]), wxNullBitmap, false, currentX, wxDefaultPosition.y, (wxObject *) NULL, _T("New file"));
 322     currentX += width + 5;
 323     toolBar->AddTool(1, *bitmaps[1], wxNullBitmap, false, currentX, wxDefaultPosition.y, (wxObject *) NULL, _T("Open file"));
 324     currentX += width + 5;
 325     toolBar->AddTool(2, *bitmaps[2], wxNullBitmap, false, currentX, wxDefaultPosition.y, (wxObject *) NULL, _T("Save file"));
 326     currentX += width + 5;
 327     toolBar->AddSeparator();
 328     toolBar->AddTool(3, *bitmaps[3], wxNullBitmap, false, currentX, wxDefaultPosition.y, (wxObject *) NULL, _T("Copy"));
 329     currentX += width + 5;
 330     toolBar->AddTool(4, *bitmaps[4], wxNullBitmap, false, currentX, wxDefaultPosition.y, (wxObject *) NULL, _T("Cut"));
 331     currentX += width + 5;
 332     toolBar->AddTool(5, *bitmaps[5], wxNullBitmap, false, currentX, wxDefaultPosition.y, (wxObject *) NULL, _T("Paste"));
 333     currentX += width + 5;
 334     toolBar->AddSeparator();
 335     toolBar->AddTool(6, *bitmaps[6], wxNullBitmap, false, currentX, wxDefaultPosition.y, (wxObject *) NULL, _T("Print"));
 336     currentX += width + 5;
 337     toolBar->AddSeparator();
 338     toolBar->AddTool( MDI_ABOUT, *bitmaps[7], wxNullBitmap, true, currentX, wxDefaultPosition.y, (wxObject *) NULL, _T("Help"));
 339
 340     toolBar->Realize();
 341
 342     int i;
 343     for (i = 0; i < 8; i++)
 344         delete bitmaps[i];
 345 }
 346 #endif // wxUSE_TOOLBAR
 347
 348 // ---------------------------------------------------------------------------
 349 // MyCanvas
 350 // ---------------------------------------------------------------------------
 351
 352 // Define a constructor for my canvas
 353 MyCanvas::MyCanvas(wxWindow *parent, const wxPoint& pos, const wxSize& size)
 354         : wxScrolledWindow(parent, wxID_ANY, pos, size,
 355                            wxSUNKEN_BORDER |
 356                            wxNO_FULL_REPAINT_ON_RESIZE |
 357                            wxVSCROLL | wxHSCROLL)
 358 {
 359     SetBackgroundColour(wxColour(_T("WHITE")));
 360
 361     m_dirty = false;
 362 }
 363
 364 // Define the repainting behaviour
 365 void MyCanvas::OnDraw(wxDC& dc)
 366 {
 367     dc.SetFont(*wxSWISS_FONT);
 368     dc.SetPen(*wxGREEN_PEN);
 369     dc.DrawLine(0, 0, 200, 200);
 370     dc.DrawLine(200, 0, 0, 200);
 371
 372     dc.SetBrush(*wxCYAN_BRUSH);
 373     dc.SetPen(*wxRED_PEN);
 374     dc.DrawRectangle(100, 100, 100, 50);
 375     dc.DrawRoundedRectangle(150, 150, 100, 50, 20);
 376
 377     dc.DrawEllipse(250, 250, 100, 50);
 378 #if wxUSE_SPLINES
 379     dc.DrawSpline(50, 200, 50, 100, 200, 10);
 380 #endif // wxUSE_SPLINES
 381     dc.DrawLine(50, 230, 200, 230);
 382     dc.DrawText(_T("This is a test string"), 50, 230);
 383
 384     wxPoint points[3];
 385     points[0].x = 200; points[0].y = 300;
 386     points[1].x = 100; points[1].y = 400;
 387     points[2].x = 300; points[2].y = 400;
 388
 389     dc.DrawPolygon(3, points);
 390 }
 391
 392 // This implements a tiny doodling program! Drag the mouse using the left
 393 // button.
 394 void MyCanvas::OnEvent(wxMouseEvent& event)
 395 {
 396     wxClientDC dc(this);
 397     PrepareDC(dc);
 398
 399     wxPoint pt(event.GetLogicalPosition(dc));
 400
 401     if (xpos > -1 && ypos > -1 && event.Dragging())
 402     {
 403         dc.SetPen(*wxBLACK_PEN);
 404         dc.DrawLine(xpos, ypos, pt.x, pt.y);
 405
 406         m_dirty = true;
 407     }
 408
 409     xpos = pt.x;
 410     ypos = pt.y;
 411 }
 412
 413 // ---------------------------------------------------------------------------
 414 // MyChild
 415 // ---------------------------------------------------------------------------
 416
 417 MyChild::MyChild(wxMDIParentFrame *parent, const wxString& title)
 418        : wxMDIChildFrame(parent, wxID_ANY, title, wxDefaultPosition, wxDefaultSize,
 419                          wxDEFAULT_FRAME_STYLE | wxNO_FULL_REPAINT_ON_RESIZE)
 420 {
 421     canvas = (MyCanvas *) NULL;
 422     my_children.Append(this);
 423
 424     // this should work for MDI frames as well as for normal ones
 425     SetSizeHints(100, 100);
 426 }
 427
 428 MyChild::~MyChild()
 429 {
 430     my_children.DeleteObject(this);
 431 }
 432
 433 void MyChild::OnQuit(wxCommandEvent& WXUNUSED(event))
 434 {
 435     Close(true);
 436 }
 437
 438 void MyChild::OnRefresh(wxCommandEvent& WXUNUSED(event))
 439 {
 440     if ( canvas )
 441         canvas->Refresh();
 442 }
 443
 444 void MyChild::OnChangePosition(wxCommandEvent& WXUNUSED(event))
 445 {
 446     Move(10, 10);
 447 }
 448
 449 void MyChild::OnChangeSize(wxCommandEvent& WXUNUSED(event))
 450 {
 451     SetClientSize(100, 100);
 452 }
 453
 454 void MyChild::OnChangeTitle(wxCommandEvent& WXUNUSED(event))
 455 {
 456 //#if wxUSE_TEXTDLG
 457     static wxString s_title = _T("Canvas Frame");
 458
 459     wxString title = wxGetTextFromUser(_T("Enter the new title for MDI child"),
 460                                        _T("MDI sample question"),
 461                                        s_title,
 462                                        GetParent()->GetParent());
 463     if ( !title )
 464         return;
 465
 466     s_title = title;
 467     SetTitle(s_title);
 468 //#endif
 469 }
 470
 471 void MyChild::OnActivate(wxActivateEvent& event)
 472 {
 473     if ( event.GetActive() && canvas )
 474         canvas->SetFocus();
 475 }
 476
 477 void MyChild::OnMove(wxMoveEvent& event)
 478 {
 479     // VZ: here everything is totally wrong under MSW, the positions are
 480     //     different and both wrong (pos2 is off by 2 pixels for me which seems
 481     //     to be the width of the MDI canvas border)
 482     wxPoint pos1 = event.GetPosition(),
 483             pos2 = GetPosition();
 484     wxLogStatus(wxT("position from event: (%d, %d), from frame (%d, %d)"),
 485                 pos1.x, pos1.y, pos2.x, pos2.y);
 486
 487     event.Skip();
 488 }
 489
 490 void MyChild::OnSize(wxSizeEvent& event)
 491 {
 492     // VZ: under MSW the size event carries the client size (quite
 493     //     unexpectedly) *except* for the very first one which has the full
 494     //     size... what should it really be? TODO: check under wxGTK
 495     wxSize size1 = event.GetSize(),
 496            size2 = GetSize(),
 497            size3 = GetClientSize();
 498     wxLogStatus(wxT("size from event: %dx%d, from frame %dx%d, client %dx%d"),
 499                 size1.x, size1.y, size2.x, size2.y, size3.x, size3.y);
 500
 501     event.Skip();
 502 }
 503
 504 void MyChild::OnClose(wxCloseEvent& event)
 505 {
 506     if ( canvas && canvas->IsDirty() )
 507     {
 508         if ( wxMessageBox(_T("Really close?"), _T("Please confirm"),
 509                           wxICON_QUESTION | wxYES_NO) != wxYES )
 510         {
 511             event.Veto();
 512
 513             return;
 514         }
 515     }
 516
 517     gs_nFrames--;
 518
 519     event.Skip();
 520 }
 521
 522