samples/svg/svgtest.cpp

   1 // biol75@york.ac.uk (Chris Elliott) March 2000
   2
   3 #ifdef __BIDE__
   4 #define _NO_VCL
   5 #include "condefs.h"
   6 USERC("svg.rc");
   7 //---------------------------------------------------------------------------
   8 #define WinMain WinMain
   9 #endif
  10 /////////////////////////////////////////////////////////////////////////////
  11 // Name:        svgtest.cpp
  12 // Purpose:     SVG sample
  13 // Author:      Chris Elliott
  14 // Modified by:
  15 // RCS-ID:      $Id$
  16 // Licence:     wxWindows license
  17 /////////////////////////////////////////////////////////////////////////////
  18
  19 // ===========================================================================
  20 // declarations
  21 // ===========================================================================
  22
  23 // ---------------------------------------------------------------------------
  24 // headers
  25 // ---------------------------------------------------------------------------
  26
  27 // For compilers that support precompilation, includes "wx/wx.h".
  28 #include "wx/wxprec.h"
  29
  30 #ifdef __BORLANDC__
  31 #pragma hdrstop
  32 #endif
  33
  34 #ifndef WX_PRECOMP
  35 #include "wx/wx.h"
  36 #include "wx/mdi.h"
  37 #endif
  38
  39 #include <wx/toolbar.h>
  40 #include <wx/svg/dcsvg.h>
  41
  42 #ifndef __WXMSW__
  43 #include "mondrian.xpm"
  44 #endif
  45 #include "bitmaps/new.xpm"
  46 #include "bitmaps/save.xpm"
  47 #include "bitmaps/help.xpm"
  48 #include "SVGlogo24.xpm"
  49
  50 class MyChild;
  51
  52 // Define a new application
  53 class MyApp : public wxApp
  54 {
  55     public:
  56         bool OnInit();
  57 };
  58
  59 // Define a new frame
  60 class MyFrame : public wxMDIParentFrame
  61 {
  62     public:
  63         int nWinCreated;
  64
  65         wxList m_children;
  66
  67         MyFrame(wxWindow *parent, const wxWindowID id, const wxString& title,
  68             const wxPoint& pos, const wxSize& size, const long style);
  69
  70         void InitToolBar(wxToolBar* toolBar);
  71
  72         void OnSize(wxSizeEvent& event);
  73         void OnAbout(wxCommandEvent& event);
  74         void OnNewWindow(wxCommandEvent& event);
  75         void OnQuit(wxCommandEvent& event);
  76         void OnClose(wxCloseEvent& event);
  77         void FileSavePicture (wxCommandEvent & WXUNUSED(event) ) ;
  78
  79         DECLARE_EVENT_TABLE()
  80 };
  81
  82
  83 class MyCanvas : public wxScrolledWindow
  84 {
  85     public:
  86         int m_index ;
  87
  88         MyChild * m_child ;
  89         MyCanvas(wxWindow *parent, const wxPoint& pos, const wxSize& size);
  90         virtual void OnDraw(wxDC& dc);
  91
  92         DECLARE_EVENT_TABLE()
  93 };
  94
  95 class MyChild: public wxMDIChildFrame
  96 {
  97     public:
  98         MyCanvas *m_canvas;
  99         MyFrame  *m_frame ;
 100
 101         //////////////////// Methods
 102
 103         MyChild(wxMDIParentFrame *parent, const wxString& title, const wxPoint& pos, const wxSize& size, const long style);
 104         ~MyChild();
 105
 106         void OnActivate(wxActivateEvent& event);
 107         void OnQuit(wxCommandEvent& event);
 108         void OnClose(wxCloseEvent& event);
 109         bool OnSave(wxString filename) ;
 110
 111         DECLARE_EVENT_TABLE()
 112 };
 113
 114 // menu items ids
 115 enum
 116 {
 117     MDI_QUIT = 100,
 118     MDI_NEW_WINDOW,
 119     MDI_SAVE,
 120     MDI_REFRESH,
 121     MDI_CHILD_QUIT,
 122     MDI_ABOUT
 123 };
 124
 125
 126 IMPLEMENT_APP(MyApp)
 127
 128 // ---------------------------------------------------------------------------
 129 // global variables
 130 // ---------------------------------------------------------------------------
 131
 132 MyFrame *frame = (MyFrame *) NULL;
 133
 134 // ---------------------------------------------------------------------------
 135 // event tables
 136 // ---------------------------------------------------------------------------
 137
 138 BEGIN_EVENT_TABLE(MyFrame, wxMDIParentFrame)
 139 EVT_MENU(MDI_ABOUT, MyFrame::OnAbout)
 140 EVT_MENU(MDI_NEW_WINDOW, MyFrame::OnNewWindow)
 141 EVT_MENU(MDI_QUIT, MyFrame::OnQuit)
 142 EVT_MENU (MDI_SAVE, MyFrame::FileSavePicture)
 143 EVT_CLOSE(MyFrame::OnClose)
 144
 145 EVT_SIZE(MyFrame::OnSize)
 146 END_EVENT_TABLE()
 147
 148 // ===========================================================================
 149 // implementation
 150 // ===========================================================================
 151
 152 // ---------------------------------------------------------------------------
 153 // MyApp
 154 // ---------------------------------------------------------------------------
 155
 156 // Initialise this in OnInit, not statically
 157 bool MyApp::OnInit()
 158 {
 159     // Create the main frame window
 160
 161     frame = new MyFrame((wxFrame *)NULL, -1, wxT("SVG Demo"),
 162         wxPoint(-1, -1), wxSize(500, 400),
 163         wxDEFAULT_FRAME_STYLE | wxHSCROLL | wxVSCROLL);
 164
 165
 166     // Make a menubar
 167     wxMenu *file_menu = new wxMenu;
 168
 169     file_menu->Append(MDI_NEW_WINDOW, wxT("&New test\tCtrl+N"));
 170     file_menu->Append(MDI_QUIT, wxT("&Exit\tAlt+X"));
 171
 172     wxMenu *help_menu = new wxMenu;
 173     help_menu->Append(MDI_ABOUT, wxT("&About"));
 174
 175     wxMenuBar *menu_bar = new wxMenuBar;
 176
 177     menu_bar->Append(file_menu, wxT("&File"));
 178     menu_bar->Append(help_menu, wxT("&Help"));
 179
 180     // Associate the menu bar with the frame
 181     frame->SetMenuBar(menu_bar);
 182
 183     frame->CreateStatusBar();
 184
 185     frame->Show(TRUE);
 186
 187     SetTopWindow(frame);
 188
 189     return TRUE;
 190 }
 191
 192
 193 // ---------------------------------------------------------------------------
 194 // MyFrame
 195 // ---------------------------------------------------------------------------
 196
 197 // Define my frame constructor
 198 MyFrame::MyFrame(wxWindow *parent, const wxWindowID id, const wxString& title,
 199     const wxPoint& pos, const wxSize& size, const long style)
 200         : wxMDIParentFrame(parent, id, title, pos, size, style)
 201 {
 202     nWinCreated = 0 ;
 203
 204     // Give it an icon
 205     SetIcon(wxICON(mondrian));
 206
 207     CreateToolBar(wxNO_BORDER | wxTB_FLAT | wxTB_HORIZONTAL);
 208     InitToolBar(GetToolBar());
 209
 210 }
 211
 212
 213 void MyFrame::OnClose(wxCloseEvent& event)
 214 {
 215     if ( !event.CanVeto() )
 216     {
 217         event.Skip();
 218         return ;
 219     }
 220     if ( m_children.Number () < 1 )
 221     {
 222         event.Skip();
 223         return ;
 224     }
 225     // now try the children
 226     wxNode * pNode = m_children.GetFirst ();
 227     wxNode * pNext ;
 228     MyChild * pChild ;
 229     while ( pNode )
 230     {
 231         pNext = pNode -> GetNext ();
 232         pChild = (MyChild*) pNode -> Data ();
 233         if (pChild -> Close ())
 234         {
 235             delete pNode ;
 236         }
 237         else
 238         {
 239             event.Veto();
 240             return;
 241         }
 242         pNode = pNext ;
 243     }
 244     event.Skip();
 245 }
 246
 247
 248 void MyFrame::OnQuit(wxCommandEvent& WXUNUSED(event))
 249 {
 250     Close();
 251 }
 252
 253
 254 void MyFrame::OnAbout(wxCommandEvent& WXUNUSED(event) )
 255 {
 256     (void)wxMessageBox(wxT("wxWindows 2.0 SVG 1.0 Test\n"
 257         "Author: Chris Elliott (c) 2002\n"
 258         "Usage: svg.exe \nClick File | New to show tests\n\n"), wxT("About SVG Test"));
 259 }
 260
 261
 262 void MyFrame::OnNewWindow(wxCommandEvent& WXUNUSED(event) )
 263 {
 264     // Make another frame, containing a canvas
 265     MyChild *subframe ;
 266
 267     m_children.Append (new MyChild(frame, wxT("SVG Frame"),
 268         wxPoint(-1, -1), wxSize(-1, -1),
 269         wxDEFAULT_FRAME_STYLE )   ) ;
 270
 271     subframe = (MyChild *) m_children.GetLast() -> Data ();
 272     wxString title;
 273     title.Printf(wxT("SVG Test Window %d"), nWinCreated );
 274     // counts number of children previously, even if now closed
 275     nWinCreated ++ ;
 276
 277     // Give it a title and icon
 278     subframe->SetTitle(title);
 279     subframe->SetIcon(wxICON(mondrian));
 280
 281     // Make a menubar
 282     wxMenu *file_menu = new wxMenu;
 283
 284     file_menu->Append(MDI_NEW_WINDOW, wxT("&Another test\tCtrl+N"));
 285     file_menu->Append(MDI_SAVE, wxT("&Save\tCtrl+S"), wxT("Save in SVG format"));
 286     file_menu->Append(MDI_CHILD_QUIT, wxT("&Close child\tCtrl+F4"));
 287     file_menu->Append(MDI_QUIT, wxT("&Exit\tAlt+X"));
 288
 289     wxMenu *help_menu = new wxMenu;
 290     help_menu->Append(MDI_ABOUT, wxT("&About"));
 291
 292     wxMenuBar *menu_bar = new wxMenuBar;
 293
 294     menu_bar->Append(file_menu, wxT("&File"));
 295     menu_bar->Append(help_menu, wxT("&Help"));
 296
 297     // Associate the menu bar with the frame
 298     subframe->SetMenuBar(menu_bar);
 299
 300     subframe->Show(TRUE);
 301 }
 302
 303
 304 void MyFrame::OnSize(wxSizeEvent& WXUNUSED(event))
 305 {
 306     int w, h;
 307     GetClientSize(&w, &h);
 308
 309     GetClientWindow()->SetSize(0, 0, w, h);
 310 }
 311
 312
 313 void MyFrame::InitToolBar(wxToolBar* toolBar)
 314 {
 315     const int maxBitmaps = 3 ;
 316     wxBitmap* bitmaps[maxBitmaps];
 317
 318     bitmaps[0] = new wxBitmap( new_xpm );
 319     bitmaps[1] = new wxBitmap( save_xpm );
 320     bitmaps[2] = new wxBitmap( help_xpm );
 321
 322     int width = 16;
 323     int currentX = 5;
 324
 325     toolBar->AddTool( MDI_NEW_WINDOW, *(bitmaps[0]), wxNullBitmap, FALSE, currentX, -1, (wxObject *) NULL, wxT("New SVG test window"));
 326     currentX += width + 5;
 327     toolBar->AddTool( MDI_SAVE, *bitmaps[1], wxNullBitmap, FALSE, currentX, -1, (wxObject *) NULL, wxT("Save test in SVG format"));
 328     currentX += width + 5;
 329     toolBar->AddSeparator();
 330     toolBar->AddTool(MDI_ABOUT, *bitmaps[2], wxNullBitmap, TRUE, currentX, -1, (wxObject *) NULL, wxT("Help"));
 331
 332     toolBar->Realize();
 333
 334     int i;
 335     for (i = 0; i < maxBitmaps; i++)
 336         delete bitmaps[i];
 337 }
 338
 339
 340 void MyFrame::FileSavePicture (wxCommandEvent & WXUNUSED(event) )
 341 {
 342     MyChild * pChild = (MyChild *)GetActiveChild ();
 343     if (pChild == NULL)
 344     {
 345         return ;
 346     }
 347
 348     wxFileDialog dialog(this, wxT("Save Picture as"), wxEmptyString, pChild->GetTitle(),
 349         wxT("SVG vector picture files (*.svg)|*.svg"),
 350         wxSAVE|wxOVERWRITE_PROMPT);
 351
 352     if (dialog.ShowModal() == wxID_OK)
 353     {
 354         if (!pChild -> OnSave ( dialog.GetPath() ))
 355         {
 356             return ;
 357         }
 358     }
 359     return ;
 360 }
 361
 362
 363 // Note that MDI_NEW_WINDOW and MDI_ABOUT commands get passed
 364 // to the parent window for processing, so no need to
 365 // duplicate event handlers here.
 366 BEGIN_EVENT_TABLE(MyChild, wxMDIChildFrame)
 367     EVT_MENU(MDI_CHILD_QUIT, MyChild::OnQuit)
 368     EVT_CLOSE(MyChild::OnClose)
 369 END_EVENT_TABLE()
 370
 371 BEGIN_EVENT_TABLE(MyCanvas, wxScrolledWindow)
 372
 373 END_EVENT_TABLE()
 374
 375 // ---------------------------------------------------------------------------
 376 // MyCanvas
 377 // ---------------------------------------------------------------------------
 378
 379 // Define a constructor for my canvas
 380 MyCanvas::MyCanvas(wxWindow *parent, const wxPoint& pos, const wxSize& size)
 381 : wxScrolledWindow(parent, -1, pos, size,
 382 wxSUNKEN_BORDER|wxVSCROLL|wxHSCROLL)
 383 {
 384     m_child = (MyChild *) parent ;
 385     SetBackgroundColour(wxColour("WHITE"));
 386     m_index = m_child->m_frame->nWinCreated % 7 ;
 387 }
 388
 389
 390 // Define the repainting behaviour
 391 void MyCanvas::OnDraw(wxDC& dc)
 392 {
 393     // vars to use ...
 394     wxString s ;
 395     wxPen wP ;
 396     wxBrush wB ;
 397     wxPoint points[6];
 398     wxColour wC;
 399     wxFont wF ;
 400
 401     dc.SetFont(*wxSWISS_FONT);
 402     dc.SetPen(*wxGREEN_PEN);
 403
 404
 405     switch (m_index)
 406     {
 407         default:
 408         case 0:
 409             // draw lines to make a cross
 410             dc.DrawLine(0, 0, 200, 200);
 411             dc.DrawLine(200, 0, 0, 200);
 412             // draw point colored line and spline
 413             wP = *wxCYAN_PEN ;
 414             wP.SetWidth(3);
 415             dc.SetPen(wP);
 416
 417             dc.DrawPoint (25,15) ;
 418             dc.DrawLine(50, 30, 200, 30);
 419             dc.DrawSpline(50, 200, 50, 100, 200, 10);
 420             s = wxT("Green Cross, Cyan Line and spline");
 421             break ;
 422
 423         case 1:
 424             // draw standard shapes
 425             dc.SetBrush(*wxCYAN_BRUSH);
 426             dc.SetPen(*wxRED_PEN);
 427             dc.DrawRectangle(10, 10, 100, 70);
 428             wB = wxBrush ("DARK ORCHID", wxTRANSPARENT);
 429             dc.SetBrush (wB);
 430             dc.DrawRoundedRectangle(50, 50, 100, 70, 20);
 431             dc.SetBrush (wxBrush("GOLDENROD", wxSOLID) );
 432             dc.DrawEllipse(100, 100, 100, 50);
 433
 434             points[0].x = 100; points[0].y = 200;
 435             points[1].x = 70; points[1].y = 260;
 436             points[2].x = 160; points[2].y = 230;
 437             points[3].x = 40; points[3].y = 230;
 438             points[4].x = 130; points[4].y = 260;
 439             points[5].x = 100; points[5].y = 200;
 440
 441             dc.DrawPolygon(5, points);
 442             dc.DrawLines (6, points, 160);
 443             s = wxT("Blue rectangle, red edge, clear rounded rectangle, gold ellipse, gold and clear stars");
 444             break ;
 445
 446         case 2:
 447             // draw text in Arial or similar font
 448             dc.DrawLine(50,25,50,35);
 449             dc.DrawLine(45,30,55,30);
 450             dc.DrawText(wxT("This is a Swiss-style string"), 50, 30);
 451             wC = dc.GetTextForeground() ;
 452             dc.SetTextForeground ("FIREBRICK");
 453
 454             // no effect in msw ??
 455             dc.SetTextBackground ("WHEAT");
 456             dc.DrawText(wxT("This is a Red string"), 50, 200);
 457             dc.DrawRotatedText(wxT("This is a 45 deg string"), 50, 200, 45);
 458             dc.DrawRotatedText(wxT("This is a 90 deg string"), 50, 200, 90);
 459             wF = wxFont ( 18, wxROMAN, wxITALIC, wxBOLD, FALSE, wxT("Times New Roman"));
 460             dc.SetFont(wF);
 461             dc.SetTextForeground (wC) ;
 462             dc.DrawText(wxT("This is a Times-style string"), 50, 60);
 463             s = wxT("Swiss, Times text; red text, rotated and colored orange");
 464             break ;
 465
 466         case 3 :
 467             // four arcs start and end points, center
 468             dc.SetBrush(*wxGREEN_BRUSH);
 469             dc.DrawArc ( 200,300, 370,230, 300.0,300.0 );
 470             dc.SetBrush(*wxBLUE_BRUSH);
 471             dc.DrawArc ( 270-50, 270-86, 270-86, 270-50, 270.0,270.0 );
 472             dc.SetDeviceOrigin(-10,-10);
 473             dc.DrawArc ( 270-50, 270-86, 270-86, 270-50, 270.0,270.0 );
 474             dc.SetDeviceOrigin(0,0);
 475
 476             wP.SetColour ("CADET BLUE");
 477             dc.SetPen(wP);
 478             dc.DrawArc ( 75,125, 110, 40, 75.0, 75.0 );
 479
 480             wP.SetColour ("SALMON");
 481             dc.SetPen(wP);
 482             dc.SetBrush(*wxRED_BRUSH);
 483             //top left corner, width and height, start and end angle
 484                                  // 315 same center and x-radius as last pie-arc, half Y radius
 485             dc.DrawEllipticArc(25,50,100,50,180.0,45.0) ;
 486
 487             wP = *wxCYAN_PEN ;
 488             wP.SetWidth(3);
 489             dc.SetPen(wP);
 490                                  //wxTRANSPARENT));
 491             dc.SetBrush (wxBrush ("SALMON",wxSOLID)) ;
 492             dc.DrawEllipticArc(300,  0,200,100, 0.0,145.0) ;
 493                                  //same end point
 494             dc.DrawEllipticArc(300, 50,200,100,90.0,145.0) ;
 495             dc.DrawEllipticArc(300,100,200,100,90.0,345.0) ;
 496
 497             s = wxT("This is an arc test page");
 498             break ;
 499
 500         case 4:
 501             dc.DrawCheckMark ( 30,30,25,25);
 502             dc.SetBrush (wxBrush ("SALMON",wxTRANSPARENT));
 503             dc.DrawCheckMark ( 80,50,75,75);
 504             dc.DrawRectangle ( 80,50,75,75);
 505             s = wxT("Two check marks");
 506             break ;
 507
 508         case 5:
 509             wF = wxFont ( 18, wxROMAN, wxITALIC, wxBOLD, FALSE, wxT("Times New Roman"));
 510             dc.SetFont(wF);
 511             dc.DrawLine(0, 0, 200, 200);
 512             dc.DrawLine(200, 0, 0, 200);
 513             dc.DrawText(wxT("This is an 18pt string"), 50, 60);
 514
 515             // rescale and draw in blue
 516             wP = *wxCYAN_PEN ;
 517             dc.SetPen(wP);
 518             dc.SetUserScale (2.0,0.5);
 519             dc.SetDeviceOrigin(200,0);
 520             dc.DrawLine(0, 0, 200, 200);
 521             dc.DrawLine(200, 0, 0, 200);
 522             dc.DrawText(wxT("This is an 18pt string 2 x 0.5 UserScaled"), 50, 60);
 523             dc.SetUserScale (2.0,2.0);
 524             dc.SetDeviceOrigin(200,200);
 525             dc.DrawText(wxT("This is an 18pt string 2 x 2 UserScaled"), 50, 60);
 526
 527             wP = *wxRED_PEN ;
 528             dc.SetPen(wP);
 529             dc.SetUserScale (1.0,1.0);
 530             dc.SetDeviceOrigin(0,10);
 531             dc.SetMapMode (wxMM_METRIC) ; //svg ignores this
 532             dc.DrawLine(0, 0, 200, 200);
 533             dc.DrawLine(200, 0, 0, 200);
 534             dc.DrawText(wxT("This is an 18pt string in MapMode"), 50, 60);
 535             s = wxT("Scaling test page");
 536             break ;
 537
 538         case 6:
 539             dc.DrawIcon( wxICON(mondrian), 10, 10 );
 540             dc.DrawBitmap ( wxBITMAP (svgbitmap), 50,15);
 541             s = wxT("Icon and Bitmap ");
 542             break ;
 543
 544     }
 545     m_child->SetStatusText(s);
 546 }
 547
 548
 549
 550
 551 // ---------------------------------------------------------------------------
 552 // MyChild
 553 // ---------------------------------------------------------------------------
 554
 555 MyChild::MyChild(wxMDIParentFrame *parent, const wxString& title,
 556 const wxPoint& pos, const wxSize& size,
 557 const long style)
 558 : wxMDIChildFrame(parent, -1, title, pos, size, style)
 559 {
 560
 561     m_frame = (MyFrame *) parent ;
 562     CreateStatusBar();
 563     SetStatusText(title);
 564
 565     int w, h ;
 566     GetClientSize ( &w, &h );
 567     m_canvas = new MyCanvas(this, wxPoint(0, 0),  wxSize (w,h)  );
 568     // Give it scrollbars
 569     m_canvas->SetScrollbars(20, 20, 50, 50);
 570
 571 }
 572
 573
 574 MyChild::~MyChild()
 575 {
 576     m_frame->m_children.DeleteObject(this);
 577 }
 578
 579
 580 void MyChild::OnQuit(wxCommandEvent& WXUNUSED(event))
 581 {
 582     Close(TRUE);
 583 }
 584
 585
 586 bool MyChild::OnSave(wxString filename)
 587 {
 588     wxSVGFileDC svgDC (filename, 600, 650) ;
 589     m_canvas->OnDraw (svgDC);
 590     return svgDC.Ok();
 591 }
 592
 593
 594
 595 void MyChild::OnActivate(wxActivateEvent& event)
 596 {
 597     if ( event.GetActive() && m_canvas )
 598         m_canvas->SetFocus();
 599 }
 600
 601
 602 void MyChild::OnClose(wxCloseEvent& event)
 603 {
 604     event.Skip();
 605 }