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__)
  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
  84     EVT_CLOSE(MyChild::OnClose)
  85 END_EVENT_TABLE()
  86
  87 BEGIN_EVENT_TABLE(MyCanvas, wxScrolledWindow)
  88     EVT_MOUSE_EVENTS(MyCanvas::OnEvent)
  89 END_EVENT_TABLE()
  90
  91 // ===========================================================================
  92 // implementation
  93 // ===========================================================================
  94
  95 // ---------------------------------------------------------------------------
  96 // MyApp
  97 // ---------------------------------------------------------------------------
  98
  99 // Initialise this in OnInit, not statically
 100 bool MyApp::OnInit()
 101 {
 102     // Create the main frame window
 103
 104     frame = new MyFrame((wxFrame *)NULL, -1, "MDI Demo",
 105                         wxPoint(-1, -1), wxSize(500, 400),
 106                         wxDEFAULT_FRAME_STYLE | wxHSCROLL | wxVSCROLL);
 107
 108     // Give it an icon
 109 #ifdef __WXMSW__
 110     frame->SetIcon(wxIcon("mdi_icn"));
 111 #else
 112     frame->SetIcon(wxIcon( mondrian_xpm ));
 113 #endif
 114
 115     // Make a menubar
 116     wxMenu *file_menu = new wxMenu;
 117
 118     file_menu->Append(MDI_NEW_WINDOW, "&New window", "Create a new child window");
 119     file_menu->Append(MDI_QUIT, "&Exit", "Quit the program");
 120
 121     wxMenu *help_menu = new wxMenu;
 122     help_menu->Append(MDI_ABOUT, "&About");
 123
 124     wxMenuBar *menu_bar = new wxMenuBar;
 125
 126     menu_bar->Append(file_menu, "&File");
 127     menu_bar->Append(help_menu, "&Help");
 128
 129     // Associate the menu bar with the frame
 130     frame->SetMenuBar(menu_bar);
 131
 132     frame->CreateStatusBar();
 133
 134     frame->Show(TRUE);
 135
 136     SetTopWindow(frame);
 137
 138     return TRUE;
 139 }
 140
 141 // ---------------------------------------------------------------------------
 142 // MyFrame
 143 // ---------------------------------------------------------------------------
 144
 145 // Define my frame constructor
 146 MyFrame::MyFrame(wxWindow *parent,
 147                  const wxWindowID id,
 148                  const wxString& title,
 149                  const wxPoint& pos,
 150                  const wxSize& size,
 151                  const long style)
 152        : wxMDIParentFrame(parent, id, title, pos, size, style)
 153 {
 154     textWindow = new wxTextCtrl(this, -1, "A help window",
 155                                 wxDefaultPosition, wxDefaultSize,
 156                                 wxTE_MULTILINE | wxSUNKEN_BORDER);
 157
 158     CreateToolBar(wxNO_BORDER | wxTB_FLAT | wxTB_HORIZONTAL);
 159     InitToolBar(GetToolBar());
 160
 161     // Accelerators
 162     wxAcceleratorEntry entries[3];
 163     entries[0].Set(wxACCEL_CTRL, (int) 'N', MDI_NEW_WINDOW);
 164     entries[1].Set(wxACCEL_CTRL, (int) 'X', MDI_QUIT);
 165     entries[2].Set(wxACCEL_CTRL, (int) 'A', MDI_ABOUT);
 166     wxAcceleratorTable accel(3, entries);
 167     SetAcceleratorTable(accel);
 168 }
 169
 170 void MyFrame::OnClose(wxCloseEvent& event)
 171 {
 172     if ( event.CanVeto() && (gs_nFrames > 0) )
 173     {
 174         wxString msg;
 175         msg.Printf(_T("%d windows still open, close anyhow?"), gs_nFrames);
 176         if ( wxMessageBox(msg, "Please confirm",
 177                           wxICON_QUESTION | wxYES_NO) != wxYES )
 178         {
 179             event.Veto();
 180
 181             return;
 182         }
 183     }
 184
 185     event.Skip();
 186 }
 187
 188 void MyFrame::OnQuit(wxCommandEvent& WXUNUSED(event))
 189 {
 190     Close();
 191 }
 192
 193 void MyFrame::OnAbout(wxCommandEvent& WXUNUSED(event) )
 194 {
 195     (void)wxMessageBox("wxWindows 2.0 MDI Demo\n"
 196                        "Author: Julian Smart (c) 1997\n"
 197                        "Usage: mdi.exe", "About MDI Demo");
 198 }
 199
 200 void MyFrame::OnNewWindow(wxCommandEvent& WXUNUSED(event) )
 201 {
 202     // Make another frame, containing a canvas
 203     MyChild *subframe = new MyChild(frame, "Canvas Frame",
 204                                     wxPoint(-1, -1), wxSize(-1, -1),
 205                                     wxDEFAULT_FRAME_STYLE);
 206
 207     wxString title;
 208     title.Printf(_T("Canvas Frame %d"), ++gs_nFrames);
 209
 210     subframe->SetTitle(title);
 211
 212     // Give it an icon
 213 #ifdef __WXMSW__
 214     subframe->SetIcon(wxIcon("chrt_icn"));
 215 #else
 216     subframe->SetIcon(wxIcon( mondrian_xpm ));
 217 #endif
 218
 219     // Make a menubar
 220     wxMenu *file_menu = new wxMenu;
 221
 222     file_menu->Append(MDI_NEW_WINDOW, "&New window");
 223     file_menu->Append(MDI_CHILD_QUIT, "&Close child", "Close this window");
 224     file_menu->Append(MDI_QUIT, "&Exit");
 225
 226     wxMenu *option_menu = new wxMenu;
 227
 228     // Dummy option
 229     option_menu->Append(MDI_REFRESH, "&Refresh picture");
 230
 231     wxMenu *help_menu = new wxMenu;
 232     help_menu->Append(MDI_ABOUT, "&About");
 233
 234     wxMenuBar *menu_bar = new wxMenuBar;
 235
 236     menu_bar->Append(file_menu, "&File");
 237     menu_bar->Append(option_menu, "&Options");
 238     menu_bar->Append(help_menu, "&Help");
 239
 240     // Associate the menu bar with the frame
 241     subframe->SetMenuBar(menu_bar);
 242
 243     int width, height;
 244     subframe->GetClientSize(&width, &height);
 245     MyCanvas *canvas = new MyCanvas(subframe, wxPoint(0, 0), wxSize(width, height));
 246     canvas->SetCursor(wxCursor(wxCURSOR_PENCIL));
 247     subframe->canvas = canvas;
 248
 249     // Give it scrollbars
 250     canvas->SetScrollbars(20, 20, 50, 50);
 251
 252     subframe->CreateStatusBar();
 253     subframe->SetStatusText(title);
 254
 255     subframe->Show(TRUE);
 256 }
 257
 258 void MyFrame::OnSize(wxSizeEvent& WXUNUSED(event) )
 259 {
 260     int w, h;
 261     GetClientSize(&w, &h);
 262
 263     textWindow->SetSize(0, 0, 200, h);
 264     GetClientWindow()->SetSize(200, 0, w - 200, h);
 265 }
 266
 267 void MyFrame::InitToolBar(wxToolBar* toolBar)
 268 {
 269     wxBitmap* bitmaps[8];
 270
 271 #ifdef __WXMSW__
 272     bitmaps[0] = new wxBitmap("icon1", wxBITMAP_TYPE_RESOURCE);
 273     bitmaps[1] = new wxBitmap("icon2", wxBITMAP_TYPE_RESOURCE);
 274     bitmaps[2] = new wxBitmap("icon3", wxBITMAP_TYPE_RESOURCE);
 275     bitmaps[3] = new wxBitmap("icon4", wxBITMAP_TYPE_RESOURCE);
 276     bitmaps[4] = new wxBitmap("icon5", wxBITMAP_TYPE_RESOURCE);
 277     bitmaps[5] = new wxBitmap("icon6", wxBITMAP_TYPE_RESOURCE);
 278     bitmaps[6] = new wxBitmap("icon7", wxBITMAP_TYPE_RESOURCE);
 279     bitmaps[7] = new wxBitmap("icon8", wxBITMAP_TYPE_RESOURCE);
 280 #else
 281     bitmaps[0] = new wxBitmap( new_xpm );
 282     bitmaps[1] = new wxBitmap( open_xpm );
 283     bitmaps[2] = new wxBitmap( save_xpm );
 284     bitmaps[3] = new wxBitmap( copy_xpm );
 285     bitmaps[4] = new wxBitmap( cut_xpm );
 286     bitmaps[5] = new wxBitmap( paste_xpm );
 287     bitmaps[6] = new wxBitmap( print_xpm );
 288     bitmaps[7] = new wxBitmap( help_xpm );
 289 #endif
 290
 291 #ifdef __WXMSW__
 292     int width = 24;
 293 #else
 294     int width = 16;
 295 #endif
 296     int currentX = 5;
 297
 298     toolBar->AddTool( MDI_NEW_WINDOW, *(bitmaps[0]), wxNullBitmap, FALSE, currentX, -1, (wxObject *) NULL, "New file");
 299     currentX += width + 5;
 300     toolBar->AddTool(1, *bitmaps[1], wxNullBitmap, FALSE, currentX, -1, (wxObject *) NULL, "Open file");
 301     currentX += width + 5;
 302     toolBar->AddTool(2, *bitmaps[2], wxNullBitmap, FALSE, currentX, -1, (wxObject *) NULL, "Save file");
 303     currentX += width + 5;
 304     toolBar->AddSeparator();
 305     toolBar->AddTool(3, *bitmaps[3], wxNullBitmap, FALSE, currentX, -1, (wxObject *) NULL, "Copy");
 306     currentX += width + 5;
 307     toolBar->AddTool(4, *bitmaps[4], wxNullBitmap, FALSE, currentX, -1, (wxObject *) NULL, "Cut");
 308     currentX += width + 5;
 309     toolBar->AddTool(5, *bitmaps[5], wxNullBitmap, FALSE, currentX, -1, (wxObject *) NULL, "Paste");
 310     currentX += width + 5;
 311     toolBar->AddSeparator();
 312     toolBar->AddTool(6, *bitmaps[6], wxNullBitmap, FALSE, currentX, -1, (wxObject *) NULL, "Print");
 313     currentX += width + 5;
 314     toolBar->AddSeparator();
 315     toolBar->AddTool(7, *bitmaps[7], wxNullBitmap, TRUE, currentX, -1, (wxObject *) NULL, "Help");
 316
 317     toolBar->Realize();
 318
 319     int i;
 320     for (i = 0; i < 8; i++)
 321         delete bitmaps[i];
 322 }
 323
 324 // ---------------------------------------------------------------------------
 325 // MyCanvas
 326 // ---------------------------------------------------------------------------
 327
 328 // Define a constructor for my canvas
 329 MyCanvas::MyCanvas(wxWindow *parent, const wxPoint& pos, const wxSize& size)
 330         : wxScrolledWindow(parent, -1, pos, size,
 331                            wxSUNKEN_BORDER|wxVSCROLL|wxHSCROLL)
 332 {
 333     SetBackgroundColour(wxColour("WHITE"));
 334
 335     m_dirty = FALSE;
 336 }
 337
 338 // Define the repainting behaviour
 339 void MyCanvas::OnDraw(wxDC& dc)
 340 {
 341     dc.SetFont(*wxSWISS_FONT);
 342     dc.SetPen(*wxGREEN_PEN);
 343     dc.DrawLine(0, 0, 200, 200);
 344     dc.DrawLine(200, 0, 0, 200);
 345
 346     dc.SetBrush(*wxCYAN_BRUSH);
 347     dc.SetPen(*wxRED_PEN);
 348     dc.DrawRectangle(100, 100, 100, 50);
 349     dc.DrawRoundedRectangle(150, 150, 100, 50, 20);
 350
 351     dc.DrawEllipse(250, 250, 100, 50);
 352     dc.DrawSpline(50, 200, 50, 100, 200, 10);
 353     dc.DrawLine(50, 230, 200, 230);
 354     dc.DrawText("This is a test string", 50, 230);
 355
 356     wxPoint points[3];
 357     points[0].x = 200; points[0].y = 300;
 358     points[1].x = 100; points[1].y = 400;
 359     points[2].x = 300; points[2].y = 400;
 360
 361     dc.DrawPolygon(3, points);
 362 }
 363
 364 // This implements a tiny doodling program! Drag the mouse using the left
 365 // button.
 366 void MyCanvas::OnEvent(wxMouseEvent& event)
 367 {
 368     wxClientDC dc(this);
 369     PrepareDC(dc);
 370
 371     wxPoint pt(event.GetLogicalPosition(dc));
 372
 373     if (xpos > -1 && ypos > -1 && event.Dragging())
 374     {
 375         dc.SetPen(*wxBLACK_PEN);
 376         dc.DrawLine(xpos, ypos, pt.x, pt.y);
 377
 378         m_dirty = TRUE;
 379     }
 380
 381     xpos = pt.x;
 382     ypos = pt.y;
 383 }
 384
 385 // ---------------------------------------------------------------------------
 386 // MyChild
 387 // ---------------------------------------------------------------------------
 388
 389 MyChild::MyChild(wxMDIParentFrame *parent, const wxString& title,
 390                  const wxPoint& pos, const wxSize& size,
 391                  const long style)
 392        : wxMDIChildFrame(parent, -1, title, pos, size, style)
 393 {
 394     canvas = (MyCanvas *) NULL;
 395     my_children.Append(this);
 396 }
 397
 398 MyChild::~MyChild()
 399 {
 400     my_children.DeleteObject(this);
 401 }
 402
 403 void MyChild::OnQuit(wxCommandEvent& WXUNUSED(event))
 404 {
 405     Close(TRUE);
 406 }
 407
 408 void MyChild::OnRefresh(wxCommandEvent& event)
 409 {
 410     Refresh();
 411 }
 412
 413 void MyChild::OnActivate(wxActivateEvent& event)
 414 {
 415     if ( event.GetActive() && canvas )
 416         canvas->SetFocus();
 417 }
 418
 419 void MyChild::OnClose(wxCloseEvent& event)
 420 {
 421     if ( canvas && canvas->IsDirty() )
 422     {
 423         if ( wxMessageBox("Really close?", "Please confirm",
 424                           wxICON_QUESTION | wxYES_NO) != wxYES )
 425         {
 426             event.Veto();
 427
 428             return;
 429         }
 430     }
 431
 432     gs_nFrames--;
 433
 434     event.Skip();
 435 }
 436
 437