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 and Markus Holzem
   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(__WXGTK__) || defined(__WXMOTIF__) || defined(__WXMAC__)
  35     #include "mondrian.xpm"
  36     #include "bitmaps/new.xpm"
  37     #include "bitmaps/open.xpm"
  38     #include "bitmaps/save.xpm"
  39     #include "bitmaps/copy.xpm"
  40     #include "bitmaps/cut.xpm"
  41     #include "bitmaps/paste.xpm"
  42     #include "bitmaps/print.xpm"
  43     #include "bitmaps/help.xpm"
  44 #endif
  45
  46 #include "mdi.h"
  47
  48 IMPLEMENT_APP(MyApp)
  49
  50 // ---------------------------------------------------------------------------
  51 // global variables
  52 // ---------------------------------------------------------------------------
  53
  54 MyFrame *frame = (MyFrame *) NULL;
  55 wxList my_children;
  56
  57 // For drawing lines in a canvas
  58 static long xpos = -1;
  59 static long ypos = -1;
  60
  61 static int gs_nFrames = 0;
  62
  63 // ---------------------------------------------------------------------------
  64 // event tables
  65 // ---------------------------------------------------------------------------
  66
  67 BEGIN_EVENT_TABLE(MyFrame, wxMDIParentFrame)
  68     EVT_MENU(MDI_ABOUT, MyFrame::OnAbout)
  69     EVT_MENU(MDI_NEW_WINDOW, MyFrame::OnNewWindow)
  70     EVT_MENU(MDI_QUIT, MyFrame::OnQuit)
  71
  72     EVT_CLOSE(MyFrame::OnClose)
  73
  74     EVT_SIZE(MyFrame::OnSize)
  75 END_EVENT_TABLE()
  76
  77 // Note that MDI_NEW_WINDOW and MDI_ABOUT commands get passed
  78 // to the parent window for processing, so no need to
  79 // duplicate event handlers here.
  80 BEGIN_EVENT_TABLE(MyChild, wxMDIChildFrame)
  81     EVT_MENU(MDI_CHILD_QUIT, MyChild::OnQuit)
  82     EVT_MENU(MDI_REFRESH, MyChild::OnRefresh)
  83     EVT_MENU(MDI_CHANGE_TITLE, MyChild::OnChangeTitle)
  84     EVT_MENU(MDI_CHANGE_POSITION, MyChild::OnChangePosition)
  85     EVT_MENU(MDI_CHANGE_SIZE, MyChild::OnChangeSize)
  86
  87     EVT_SIZE(MyChild::OnSize)
  88     EVT_MOVE(MyChild::OnMove)
  89
  90     EVT_CLOSE(MyChild::OnClose)
  91 END_EVENT_TABLE()
  92
  93 BEGIN_EVENT_TABLE(MyCanvas, wxScrolledWindow)
  94     EVT_MOUSE_EVENTS(MyCanvas::OnEvent)
  95 END_EVENT_TABLE()
  96
  97 // ===========================================================================
  98 // implementation
  99 // ===========================================================================
 100
 101 // ---------------------------------------------------------------------------
 102 // MyApp
 103 // ---------------------------------------------------------------------------
 104
 105 // Initialise this in OnInit, not statically
 106 bool MyApp::OnInit()
 107 {
 108     // Create the main frame window
 109
 110     frame = new MyFrame((wxFrame *)NULL, -1, "MDI Demo",
 111                         wxPoint(-1, -1), wxSize(500, 400),
 112                         wxDEFAULT_FRAME_STYLE | wxHSCROLL | wxVSCROLL);
 113 #ifdef __WXMSW__
 114 #if 0
 115     // Experimental: change the window menu
 116     wxMenu* windowMenu = new wxMenu;
 117     windowMenu->Append(5000, "My menu item!");
 118     frame->SetWindowMenu(windowMenu);
 119 #endif
 120 #endif
 121
 122     // Give it an icon
 123 #ifdef __WXMSW__
 124     frame->SetIcon(wxIcon("mdi_icn"));
 125 #else
 126     frame->SetIcon(wxIcon( mondrian_xpm ));
 127 #endif
 128
 129     // Make a menubar
 130     wxMenu *file_menu = new wxMenu;
 131
 132     file_menu->Append(MDI_NEW_WINDOW, "&New window\tCtrl-N", "Create a new child window");
 133     file_menu->Append(MDI_QUIT, "&Exit\tAlt-X", "Quit the program");
 134
 135     wxMenu *help_menu = new wxMenu;
 136     help_menu->Append(MDI_ABOUT, "&About\tF1");
 137
 138     wxMenuBar *menu_bar = new wxMenuBar;
 139
 140     menu_bar->Append(file_menu, "&File");
 141     menu_bar->Append(help_menu, "&Help");
 142
 143     // Associate the menu bar with the frame
 144     frame->SetMenuBar(menu_bar);
 145
 146     frame->CreateStatusBar();
 147
 148     frame->Show(TRUE);
 149
 150     SetTopWindow(frame);
 151
 152     return TRUE;
 153 }
 154
 155 // ---------------------------------------------------------------------------
 156 // MyFrame
 157 // ---------------------------------------------------------------------------
 158
 159 // Define my frame constructor
 160 MyFrame::MyFrame(wxWindow *parent,
 161                  const wxWindowID id,
 162                  const wxString& title,
 163                  const wxPoint& pos,
 164                  const wxSize& size,
 165                  const long style)
 166        : wxMDIParentFrame(parent, id, title, pos, size,
 167                           style | wxNO_FULL_REPAINT_ON_RESIZE)
 168 {
 169     textWindow = new wxTextCtrl(this, -1, "A help window",
 170                                 wxDefaultPosition, wxDefaultSize,
 171                                 wxTE_MULTILINE | wxSUNKEN_BORDER);
 172
 173     CreateToolBar(wxNO_BORDER | wxTB_FLAT | wxTB_HORIZONTAL);
 174     InitToolBar(GetToolBar());
 175
 176     // Accelerators
 177     wxAcceleratorEntry entries[3];
 178     entries[0].Set(wxACCEL_CTRL, (int) 'N', MDI_NEW_WINDOW);
 179     entries[1].Set(wxACCEL_CTRL, (int) 'X', MDI_QUIT);
 180     entries[2].Set(wxACCEL_CTRL, (int) 'A', MDI_ABOUT);
 181     wxAcceleratorTable accel(3, entries);
 182     SetAcceleratorTable(accel);
 183 }
 184
 185 void MyFrame::OnClose(wxCloseEvent& event)
 186 {
 187     if ( event.CanVeto() && (gs_nFrames > 0) )
 188     {
 189         wxString msg;
 190         msg.Printf(_T("%d windows still open, close anyhow?"), gs_nFrames);
 191         if ( wxMessageBox(msg, "Please confirm",
 192                           wxICON_QUESTION | wxYES_NO) != wxYES )
 193         {
 194             event.Veto();
 195
 196             return;
 197         }
 198     }
 199
 200     event.Skip();
 201 }
 202
 203 void MyFrame::OnQuit(wxCommandEvent& WXUNUSED(event))
 204 {
 205     Close();
 206 }
 207
 208 void MyFrame::OnAbout(wxCommandEvent& WXUNUSED(event) )
 209 {
 210     (void)wxMessageBox("wxWindows 2.0 MDI Demo\n"
 211                        "Author: Julian Smart (c) 1997\n"
 212                        "Usage: mdi.exe", "About MDI Demo");
 213 }
 214
 215 void MyFrame::OnNewWindow(wxCommandEvent& WXUNUSED(event) )
 216 {
 217     // Make another frame, containing a canvas
 218     MyChild *subframe = new MyChild(frame, "Canvas Frame",
 219                                     wxPoint(-1, -1), wxSize(-1, -1),
 220                                     wxDEFAULT_FRAME_STYLE);
 221
 222     wxString title;
 223     title.Printf(_T("Canvas Frame %d"), ++gs_nFrames);
 224
 225     subframe->SetTitle(title);
 226
 227     // Give it an icon
 228 #ifdef __WXMSW__
 229     subframe->SetIcon(wxIcon("chrt_icn"));
 230 #else
 231     subframe->SetIcon(wxIcon( mondrian_xpm ));
 232 #endif
 233
 234     // Make a menubar
 235     wxMenu *file_menu = new wxMenu;
 236
 237     file_menu->Append(MDI_NEW_WINDOW, "&New window");
 238     file_menu->Append(MDI_CHILD_QUIT, "&Close child", "Close this window");
 239     file_menu->Append(MDI_QUIT, "&Exit");
 240
 241     wxMenu *option_menu = new wxMenu;
 242
 243     option_menu->Append(MDI_REFRESH, "&Refresh picture");
 244     option_menu->Append(MDI_CHANGE_TITLE, "Change &title...\tCtrl-T");
 245     option_menu->AppendSeparator();
 246     option_menu->Append(MDI_CHANGE_POSITION, "Move frame\tCtrl-M");
 247     option_menu->Append(MDI_CHANGE_SIZE, "Resize frame\tCtrl-S");
 248
 249     wxMenu *help_menu = new wxMenu;
 250     help_menu->Append(MDI_ABOUT, "&About");
 251
 252     wxMenuBar *menu_bar = new wxMenuBar;
 253
 254     menu_bar->Append(file_menu, "&File");
 255     menu_bar->Append(option_menu, "&Child");
 256     menu_bar->Append(help_menu, "&Help");
 257
 258     // Associate the menu bar with the frame
 259     subframe->SetMenuBar(menu_bar);
 260
 261     subframe->CreateStatusBar();
 262     subframe->SetStatusText(title);
 263
 264     int width, height;
 265     subframe->GetClientSize(&width, &height);
 266     MyCanvas *canvas = new MyCanvas(subframe, wxPoint(0, 0), wxSize(width, height));
 267     canvas->SetCursor(wxCursor(wxCURSOR_PENCIL));
 268     subframe->canvas = canvas;
 269
 270     // Give it scrollbars
 271     canvas->SetScrollbars(20, 20, 50, 50);
 272
 273     subframe->Show(TRUE);
 274 }
 275
 276 void MyFrame::OnSize(wxSizeEvent& WXUNUSED(event))
 277 {
 278     int w, h;
 279     GetClientSize(&w, &h);
 280
 281     textWindow->SetSize(0, 0, 200, h);
 282     GetClientWindow()->SetSize(200, 0, w - 200, h);
 283 }
 284
 285 void MyFrame::InitToolBar(wxToolBar* toolBar)
 286 {
 287     wxBitmap* bitmaps[8];
 288
 289 #ifdef __WXMSW__
 290     bitmaps[0] = new wxBitmap("icon1", wxBITMAP_TYPE_RESOURCE);
 291     bitmaps[1] = new wxBitmap("icon2", wxBITMAP_TYPE_RESOURCE);
 292     bitmaps[2] = new wxBitmap("icon3", wxBITMAP_TYPE_RESOURCE);
 293     bitmaps[3] = new wxBitmap("icon4", wxBITMAP_TYPE_RESOURCE);
 294     bitmaps[4] = new wxBitmap("icon5", wxBITMAP_TYPE_RESOURCE);
 295     bitmaps[5] = new wxBitmap("icon6", wxBITMAP_TYPE_RESOURCE);
 296     bitmaps[6] = new wxBitmap("icon7", wxBITMAP_TYPE_RESOURCE);
 297     bitmaps[7] = new wxBitmap("icon8", wxBITMAP_TYPE_RESOURCE);
 298 #else
 299     bitmaps[0] = new wxBitmap( new_xpm );
 300     bitmaps[1] = new wxBitmap( open_xpm );
 301     bitmaps[2] = new wxBitmap( save_xpm );
 302     bitmaps[3] = new wxBitmap( copy_xpm );
 303     bitmaps[4] = new wxBitmap( cut_xpm );
 304     bitmaps[5] = new wxBitmap( paste_xpm );
 305     bitmaps[6] = new wxBitmap( print_xpm );
 306     bitmaps[7] = new wxBitmap( help_xpm );
 307 #endif
 308
 309 #ifdef __WXMSW__
 310     int width = 24;
 311 #else
 312     int width = 16;
 313 #endif
 314     int currentX = 5;
 315
 316     toolBar->AddTool( MDI_NEW_WINDOW, *(bitmaps[0]), wxNullBitmap, FALSE, currentX, -1, (wxObject *) NULL, "New file");
 317     currentX += width + 5;
 318     toolBar->AddTool(1, *bitmaps[1], wxNullBitmap, FALSE, currentX, -1, (wxObject *) NULL, "Open file");
 319     currentX += width + 5;
 320     toolBar->AddTool(2, *bitmaps[2], wxNullBitmap, FALSE, currentX, -1, (wxObject *) NULL, "Save file");
 321     currentX += width + 5;
 322     toolBar->AddSeparator();
 323     toolBar->AddTool(3, *bitmaps[3], wxNullBitmap, FALSE, currentX, -1, (wxObject *) NULL, "Copy");
 324     currentX += width + 5;
 325     toolBar->AddTool(4, *bitmaps[4], wxNullBitmap, FALSE, currentX, -1, (wxObject *) NULL, "Cut");
 326     currentX += width + 5;
 327     toolBar->AddTool(5, *bitmaps[5], wxNullBitmap, FALSE, currentX, -1, (wxObject *) NULL, "Paste");
 328     currentX += width + 5;
 329     toolBar->AddSeparator();
 330     toolBar->AddTool(6, *bitmaps[6], wxNullBitmap, FALSE, currentX, -1, (wxObject *) NULL, "Print");
 331     currentX += width + 5;
 332     toolBar->AddSeparator();
 333     toolBar->AddTool(7, *bitmaps[7], wxNullBitmap, TRUE, currentX, -1, (wxObject *) NULL, "Help");
 334
 335     toolBar->Realize();
 336
 337     int i;
 338     for (i = 0; i < 8; i++)
 339         delete bitmaps[i];
 340 }
 341
 342 // ---------------------------------------------------------------------------
 343 // MyCanvas
 344 // ---------------------------------------------------------------------------
 345
 346 // Define a constructor for my canvas
 347 MyCanvas::MyCanvas(wxWindow *parent, const wxPoint& pos, const wxSize& size)
 348         : wxScrolledWindow(parent, -1, pos, size,
 349                            wxSUNKEN_BORDER |
 350                            wxNO_FULL_REPAINT_ON_RESIZE |
 351                            wxVSCROLL | wxHSCROLL)
 352 {
 353     SetBackgroundColour(wxColour("WHITE"));
 354
 355     m_dirty = FALSE;
 356 }
 357
 358 // Define the repainting behaviour
 359 void MyCanvas::OnDraw(wxDC& dc)
 360 {
 361     dc.SetFont(*wxSWISS_FONT);
 362     dc.SetPen(*wxGREEN_PEN);
 363     dc.DrawLine(0, 0, 200, 200);
 364     dc.DrawLine(200, 0, 0, 200);
 365
 366     dc.SetBrush(*wxCYAN_BRUSH);
 367     dc.SetPen(*wxRED_PEN);
 368     dc.DrawRectangle(100, 100, 100, 50);
 369     dc.DrawRoundedRectangle(150, 150, 100, 50, 20);
 370
 371     dc.DrawEllipse(250, 250, 100, 50);
 372 #if wxUSE_SPLINES
 373     dc.DrawSpline(50, 200, 50, 100, 200, 10);
 374 #endif // wxUSE_SPLINES
 375     dc.DrawLine(50, 230, 200, 230);
 376     dc.DrawText("This is a test string", 50, 230);
 377
 378     wxPoint points[3];
 379     points[0].x = 200; points[0].y = 300;
 380     points[1].x = 100; points[1].y = 400;
 381     points[2].x = 300; points[2].y = 400;
 382
 383     dc.DrawPolygon(3, points);
 384 }
 385
 386 // This implements a tiny doodling program! Drag the mouse using the left
 387 // button.
 388 void MyCanvas::OnEvent(wxMouseEvent& event)
 389 {
 390     wxClientDC dc(this);
 391     PrepareDC(dc);
 392
 393     wxPoint pt(event.GetLogicalPosition(dc));
 394
 395     if (xpos > -1 && ypos > -1 && event.Dragging())
 396     {
 397         dc.SetPen(*wxBLACK_PEN);
 398         dc.DrawLine(xpos, ypos, pt.x, pt.y);
 399
 400         m_dirty = TRUE;
 401     }
 402
 403     xpos = pt.x;
 404     ypos = pt.y;
 405 }
 406
 407 // ---------------------------------------------------------------------------
 408 // MyChild
 409 // ---------------------------------------------------------------------------
 410
 411 MyChild::MyChild(wxMDIParentFrame *parent, const wxString& title,
 412                  const wxPoint& pos, const wxSize& size,
 413                  const long style)
 414        : wxMDIChildFrame(parent, -1, title, pos, size,
 415                          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     static wxString s_title = _T("Canvas Frame");
 453
 454     wxString title = wxGetTextFromUser(_T("Enter the new title for MDI child"),
 455                                        _T("MDI sample question"),
 456                                        s_title,
 457                                        GetParent()->GetParent());
 458     if ( !title )
 459         return;
 460
 461     s_title = title;
 462     SetTitle(s_title);
 463 }
 464
 465 void MyChild::OnActivate(wxActivateEvent& event)
 466 {
 467     if ( event.GetActive() && canvas )
 468         canvas->SetFocus();
 469 }
 470
 471 void MyChild::OnMove(wxMoveEvent& event)
 472 {
 473     // VZ: here everything is totally wrong under MSW, the positions are
 474     //     different and both wrong (pos2 is off by 2 pixels for me which seems
 475     //     to be the width of the MDI canvas border)
 476     wxPoint pos1 = event.GetPosition(),
 477             pos2 = GetPosition();
 478     wxLogStatus(wxT("position from event: (%d, %d), from frame (%d, %d)"),
 479                 pos1.x, pos1.y, pos2.x, pos2.y);
 480
 481     event.Skip();
 482 }
 483
 484 void MyChild::OnSize(wxSizeEvent& event)
 485 {
 486     // VZ: under MSW the size event carries the client size (quite
 487     //     unexpectedly) *except* for the very first one which has the full
 488     //     size... what should it really be? TODO: check under wxGTK
 489     wxSize size1 = event.GetSize(),
 490            size2 = GetSize(),
 491            size3 = GetClientSize();
 492     wxLogStatus(wxT("size from event: %dx%d, from frame %dx%d, client %dx%d"),
 493                 size1.x, size1.y, size2.x, size2.y, size3.x, size3.y);
 494
 495     event.Skip();
 496 }
 497
 498 void MyChild::OnClose(wxCloseEvent& event)
 499 {
 500     if ( canvas && canvas->IsDirty() )
 501     {
 502         if ( wxMessageBox("Really close?", "Please confirm",
 503                           wxICON_QUESTION | wxYES_NO) != wxYES )
 504         {
 505             event.Veto();
 506
 507             return;
 508         }
 509     }
 510
 511     gs_nFrames--;
 512
 513     event.Skip();
 514 }
 515
 516