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 "../sample.xpm"
  36     #include "chart.xpm"
  37 #endif
  38
  39 #include "bitmaps/new.xpm"
  40 #include "bitmaps/open.xpm"
  41 #include "bitmaps/save.xpm"
  42 #include "bitmaps/copy.xpm"
  43 #include "bitmaps/cut.xpm"
  44 #include "bitmaps/paste.xpm"
  45 #include "bitmaps/print.xpm"
  46 #include "bitmaps/help.xpm"
  47
  48
  49 #include "mdi.h"
  50
  51 IMPLEMENT_APP(MyApp)
  52
  53 // ---------------------------------------------------------------------------
  54 // global variables
  55 // ---------------------------------------------------------------------------
  56
  57 MyFrame *frame = (MyFrame *) NULL;
  58 wxList my_children;
  59
  60 // For drawing lines in a canvas
  61 static long xpos = -1;
  62 static long ypos = -1;
  63
  64 static int gs_nFrames = 0;
  65
  66 // ---------------------------------------------------------------------------
  67 // event tables
  68 // ---------------------------------------------------------------------------
  69
  70 BEGIN_EVENT_TABLE(MyFrame, wxMDIParentFrame)
  71     EVT_MENU(MDI_ABOUT, MyFrame::OnAbout)
  72     EVT_MENU(MDI_NEW_WINDOW, MyFrame::OnNewWindow)
  73     EVT_MENU(MDI_QUIT, MyFrame::OnQuit)
  74
  75     EVT_CLOSE(MyFrame::OnClose)
  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 #if wxUSE_CLIPBOARD
  90     EVT_MENU(wxID_PASTE, MyChild::OnPaste)
  91     EVT_UPDATE_UI(wxID_PASTE, MyChild::OnUpdatePaste)
  92 #endif // wxUSE_CLIPBOARD
  93
  94     EVT_SIZE(MyChild::OnSize)
  95     EVT_MOVE(MyChild::OnMove)
  96
  97     EVT_CLOSE(MyChild::OnClose)
  98 END_EVENT_TABLE()
  99
 100 BEGIN_EVENT_TABLE(MyCanvas, wxScrolledWindow)
 101     EVT_MOUSE_EVENTS(MyCanvas::OnEvent)
 102 END_EVENT_TABLE()
 103
 104 // ===========================================================================
 105 // implementation
 106 // ===========================================================================
 107
 108 // ---------------------------------------------------------------------------
 109 // MyApp
 110 // ---------------------------------------------------------------------------
 111
 112 // Initialise this in OnInit, not statically
 113 bool MyApp::OnInit()
 114 {
 115     // Create the main frame window
 116
 117     frame = new MyFrame((wxFrame *)NULL, wxID_ANY, _T("MDI Demo"),
 118                         wxDefaultPosition, wxSize(500, 400),
 119                         wxDEFAULT_FRAME_STYLE | wxHSCROLL | wxVSCROLL);
 120 #if 0
 121     // Experimental: change the window menu
 122     wxMenu* windowMenu = new wxMenu;
 123     windowMenu->Append(5000, _T("My menu item!"));
 124     frame->SetWindowMenu(windowMenu);
 125 #endif
 126
 127     // Give it an icon
 128     frame->SetIcon(wxICON(sample));
 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, style)
 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 #if wxUSE_ACCEL
 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 #endif // wxUSE_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     subframe->SetIcon(wxICON(chart));
 233
 234 #if wxUSE_MENUS
 235     // Make a menubar
 236     wxMenu *file_menu = new wxMenu;
 237
 238     file_menu->Append(MDI_NEW_WINDOW, _T("&New window"));
 239     file_menu->Append(MDI_CHILD_QUIT, _T("&Close child"), _T("Close this window"));
 240     file_menu->Append(MDI_QUIT, _T("&Exit"));
 241
 242     wxMenu *option_menu = new wxMenu;
 243
 244     option_menu->Append(MDI_REFRESH, _T("&Refresh picture"));
 245     option_menu->Append(MDI_CHANGE_TITLE, _T("Change &title...\tCtrl-T"));
 246     option_menu->AppendSeparator();
 247     option_menu->Append(MDI_CHANGE_POSITION, _T("Move frame\tCtrl-M"));
 248     option_menu->Append(MDI_CHANGE_SIZE, _T("Resize frame\tCtrl-S"));
 249 #if wxUSE_CLIPBOARD
 250     option_menu->AppendSeparator();
 251     option_menu->Append(wxID_PASTE, _T("Copy text from clipboard\tCtrl-V"));
 252 #endif // wxUSE_CLIPBOARD
 253
 254     wxMenu *help_menu = new wxMenu;
 255     help_menu->Append(MDI_ABOUT, _T("&About"));
 256
 257     wxMenuBar *menu_bar = new wxMenuBar;
 258
 259     menu_bar->Append(file_menu, _T("&File"));
 260     menu_bar->Append(option_menu, _T("&Child"));
 261     menu_bar->Append(help_menu, _T("&Help"));
 262
 263     // Associate the menu bar with the frame
 264     subframe->SetMenuBar(menu_bar);
 265 #endif // wxUSE_MENUS
 266
 267 #if wxUSE_STATUSBAR
 268     subframe->CreateStatusBar();
 269     subframe->SetStatusText(title);
 270 #endif // wxUSE_STATUSBAR
 271
 272     int width, height;
 273     subframe->GetClientSize(&width, &height);
 274     MyCanvas *canvas = new MyCanvas(subframe, wxPoint(0, 0), wxSize(width, height));
 275     canvas->SetCursor(wxCursor(wxCURSOR_PENCIL));
 276     subframe->canvas = canvas;
 277
 278     // Give it scrollbars
 279     canvas->SetScrollbars(20, 20, 50, 50);
 280
 281     subframe->Show(true);
 282 }
 283
 284 void MyFrame::OnSize(wxSizeEvent&
 285                                   #ifdef __WXUNIVERSAL__
 286                                   event
 287                                   #else
 288                                   WXUNUSED(event)
 289                                   #endif
 290                                   )
 291 {
 292     int w, h;
 293     GetClientSize(&w, &h);
 294
 295     textWindow->SetSize(0, 0, 200, h);
 296     GetClientWindow()->SetSize(200, 0, w - 200, h);
 297
 298     // FIXME: On wxX11, we need the MDI frame to process this
 299     // event, but on other platforms this should not
 300     // be done.
 301 #ifdef __WXUNIVERSAL__
 302     event.Skip();
 303 #endif
 304 }
 305
 306 #if wxUSE_TOOLBAR
 307 void MyFrame::InitToolBar(wxToolBar* toolBar)
 308 {
 309     wxBitmap bitmaps[8];
 310
 311     bitmaps[0] = wxBitmap( new_xpm );
 312     bitmaps[1] = wxBitmap( open_xpm );
 313     bitmaps[2] = wxBitmap( save_xpm );
 314     bitmaps[3] = wxBitmap( copy_xpm );
 315     bitmaps[4] = wxBitmap( cut_xpm );
 316     bitmaps[5] = wxBitmap( paste_xpm );
 317     bitmaps[6] = wxBitmap( print_xpm );
 318     bitmaps[7] = wxBitmap( help_xpm );
 319
 320     toolBar->AddTool(MDI_NEW_WINDOW, _T("New"), bitmaps[0], _T("New file"));
 321     toolBar->AddTool(1, _T("Open"), bitmaps[1], _T("Open file"));
 322     toolBar->AddTool(2, _T("Save"), bitmaps[2], _T("Save file"));
 323     toolBar->AddSeparator();
 324     toolBar->AddTool(3, _T("Copy"), bitmaps[3], _T("Copy"));
 325     toolBar->AddTool(4, _T("Cut"), bitmaps[4], _T("Cut"));
 326     toolBar->AddTool(5, _T("Paste"), bitmaps[5], _T("Paste"));
 327     toolBar->AddSeparator();
 328     toolBar->AddTool(6, _T("Print"), bitmaps[6], _T("Print"));
 329     toolBar->AddSeparator();
 330     toolBar->AddTool(MDI_ABOUT, _T("About"), bitmaps[7], _T("Help"));
 331
 332     toolBar->Realize();
 333 }
 334 #endif // wxUSE_TOOLBAR
 335
 336 // ---------------------------------------------------------------------------
 337 // MyCanvas
 338 // ---------------------------------------------------------------------------
 339
 340 // Define a constructor for my canvas
 341 MyCanvas::MyCanvas(wxWindow *parent, const wxPoint& pos, const wxSize& size)
 342         : wxScrolledWindow(parent, wxID_ANY, pos, size,
 343                            wxSUNKEN_BORDER |
 344                            wxNO_FULL_REPAINT_ON_RESIZE |
 345                            wxVSCROLL | wxHSCROLL)
 346 {
 347     SetBackgroundColour(wxColour(_T("WHITE")));
 348
 349     m_dirty = false;
 350 }
 351
 352 // Define the repainting behaviour
 353 void MyCanvas::OnDraw(wxDC& dc)
 354 {
 355     if ( !m_text.empty() )
 356         dc.DrawText(m_text, 10, 10);
 357
 358     dc.SetFont(*wxSWISS_FONT);
 359     dc.SetPen(*wxGREEN_PEN);
 360     dc.DrawLine(0, 0, 200, 200);
 361     dc.DrawLine(200, 0, 0, 200);
 362
 363     dc.SetBrush(*wxCYAN_BRUSH);
 364     dc.SetPen(*wxRED_PEN);
 365     dc.DrawRectangle(100, 100, 100, 50);
 366     dc.DrawRoundedRectangle(150, 150, 100, 50, 20);
 367
 368     dc.DrawEllipse(250, 250, 100, 50);
 369 #if wxUSE_SPLINES
 370     dc.DrawSpline(50, 200, 50, 100, 200, 10);
 371 #endif // wxUSE_SPLINES
 372     dc.DrawLine(50, 230, 200, 230);
 373     dc.DrawText(_T("This is a test string"), 50, 230);
 374
 375     wxPoint points[3];
 376     points[0].x = 200; points[0].y = 300;
 377     points[1].x = 100; points[1].y = 400;
 378     points[2].x = 300; points[2].y = 400;
 379
 380     dc.DrawPolygon(3, points);
 381 }
 382
 383 // This implements a tiny doodling program! Drag the mouse using the left
 384 // button.
 385 void MyCanvas::OnEvent(wxMouseEvent& event)
 386 {
 387     wxClientDC dc(this);
 388     PrepareDC(dc);
 389
 390     wxPoint pt(event.GetLogicalPosition(dc));
 391
 392     if (xpos > -1 && ypos > -1 && event.Dragging())
 393     {
 394         dc.SetPen(*wxBLACK_PEN);
 395         dc.DrawLine(xpos, ypos, pt.x, pt.y);
 396
 397         m_dirty = true;
 398     }
 399
 400     xpos = pt.x;
 401     ypos = pt.y;
 402 }
 403
 404 // ---------------------------------------------------------------------------
 405 // MyChild
 406 // ---------------------------------------------------------------------------
 407
 408 MyChild::MyChild(wxMDIParentFrame *parent, const wxString& title)
 409        : wxMDIChildFrame(parent, wxID_ANY, title, wxDefaultPosition, wxDefaultSize,
 410                          wxDEFAULT_FRAME_STYLE | wxNO_FULL_REPAINT_ON_RESIZE)
 411 {
 412     canvas = (MyCanvas *) NULL;
 413     my_children.Append(this);
 414
 415     // this should work for MDI frames as well as for normal ones
 416     SetSizeHints(100, 100);
 417 }
 418
 419 MyChild::~MyChild()
 420 {
 421     my_children.DeleteObject(this);
 422 }
 423
 424 void MyChild::OnQuit(wxCommandEvent& WXUNUSED(event))
 425 {
 426     Close(true);
 427 }
 428
 429 void MyChild::OnRefresh(wxCommandEvent& WXUNUSED(event))
 430 {
 431     if ( canvas )
 432         canvas->Refresh();
 433 }
 434
 435 void MyChild::OnChangePosition(wxCommandEvent& WXUNUSED(event))
 436 {
 437     Move(10, 10);
 438 }
 439
 440 void MyChild::OnChangeSize(wxCommandEvent& WXUNUSED(event))
 441 {
 442     SetClientSize(100, 100);
 443 }
 444
 445 void MyChild::OnChangeTitle(wxCommandEvent& WXUNUSED(event))
 446 {
 447 #if wxUSE_TEXTDLG
 448     static wxString s_title = _T("Canvas Frame");
 449
 450     wxString title = wxGetTextFromUser(_T("Enter the new title for MDI child"),
 451                                        _T("MDI sample question"),
 452                                        s_title,
 453                                        GetParent()->GetParent());
 454     if ( !title )
 455         return;
 456
 457     s_title = title;
 458     SetTitle(s_title);
 459 #endif // wxUSE_TEXTDLG
 460 }
 461
 462 void MyChild::OnActivate(wxActivateEvent& event)
 463 {
 464     if ( event.GetActive() && canvas )
 465         canvas->SetFocus();
 466 }
 467
 468 void MyChild::OnMove(wxMoveEvent& event)
 469 {
 470     // VZ: here everything is totally wrong under MSW, the positions are
 471     //     different and both wrong (pos2 is off by 2 pixels for me which seems
 472     //     to be the width of the MDI canvas border)
 473     wxPoint pos1 = event.GetPosition(),
 474             pos2 = GetPosition();
 475     wxLogStatus(wxT("position from event: (%d, %d), from frame (%d, %d)"),
 476                 pos1.x, pos1.y, pos2.x, pos2.y);
 477
 478     event.Skip();
 479 }
 480
 481 void MyChild::OnSize(wxSizeEvent& event)
 482 {
 483     // VZ: under MSW the size event carries the client size (quite
 484     //     unexpectedly) *except* for the very first one which has the full
 485     //     size... what should it really be? TODO: check under wxGTK
 486     wxSize size1 = event.GetSize(),
 487            size2 = GetSize(),
 488            size3 = GetClientSize();
 489     wxLogStatus(wxT("size from event: %dx%d, from frame %dx%d, client %dx%d"),
 490                 size1.x, size1.y, size2.x, size2.y, size3.x, size3.y);
 491
 492     event.Skip();
 493 }
 494
 495 void MyChild::OnClose(wxCloseEvent& event)
 496 {
 497     if ( canvas && canvas->IsDirty() )
 498     {
 499         if ( wxMessageBox(_T("Really close?"), _T("Please confirm"),
 500                           wxICON_QUESTION | wxYES_NO) != wxYES )
 501         {
 502             event.Veto();
 503
 504             return;
 505         }
 506     }
 507
 508     gs_nFrames--;
 509
 510     event.Skip();
 511 }
 512
 513 #if wxUSE_CLIPBOARD
 514
 515 #include "wx/clipbrd.h"
 516
 517 void MyChild::OnPaste(wxCommandEvent& WXUNUSED(event))
 518 {
 519     wxClipboardLocker lock;
 520     wxTextDataObject data;
 521     canvas->SetText(wxTheClipboard->GetData(data) ? data.GetText().c_str()
 522                                                   : _T("No text on clipboard"));
 523 }
 524
 525 void MyChild::OnUpdatePaste(wxUpdateUIEvent& event)
 526 {
 527     wxClipboardLocker lock;
 528     event.Enable( wxTheClipboard->IsSupported(wxDF_TEXT) );
 529 }
 530
 531 #endif // wxUSE_CLIPBOARD