samples/scrollsub/scrollsub.cpp

   1 /*
   2  * Program: scrollsub
   3  *
   4  * Author: Robert Roebling
   5  *
   6  * Copyright: (C) 1999, Robert Roebling
   7  *
   8  */
   9
  10 // For compilers that support precompilation, includes "wx/wx.h".
  11 #include "wx/wxprec.h"
  12
  13 #ifdef __BORLANDC__
  14 #pragma hdrstop
  15 #endif
  16
  17 #ifndef WX_PRECOMP
  18 #include "wx/wx.h"
  19 #endif
  20
  21 #include "wx/image.h"
  22 #include "wx/listctrl.h"
  23 #include "wx/sizer.h"
  24 #include "wx/log.h"
  25
  26
  27 // derived classes
  28
  29 class MyFrame;
  30 class MyScrolledWindow;
  31 class MyCanvas;
  32 class MyApp;
  33
  34 // MyScrolledWindow
  35
  36 class MyScrolledWindow: public wxScrolledWindow
  37 {
  38 public:
  39     MyScrolledWindow(){};
  40     MyScrolledWindow( wxWindow *parent, wxWindowID id, const wxPoint &pos, const wxSize &size );
  41     ~MyScrolledWindow(){};
  42     void OnPaint( wxPaintEvent &event );
  43     void OnSize( wxSizeEvent &event );
  44 private:
  45     MyCanvas    *m_canvas;
  46
  47     DECLARE_DYNAMIC_CLASS(MyScrolledWindow)
  48     DECLARE_EVENT_TABLE()
  49 };
  50
  51 // MyTopLabels
  52
  53 class MyTopLabels: public wxWindow
  54 {
  55 public:
  56     MyTopLabels() {}
  57     MyTopLabels( wxScrolledWindow *parent, wxWindowID id, const wxPoint &pos, const wxSize &size );
  58
  59     void OnPaint( wxPaintEvent &event );
  60
  61 private:
  62     wxScrolledWindow   *m_owner;
  63
  64     DECLARE_DYNAMIC_CLASS(MyTopLabels)
  65     DECLARE_EVENT_TABLE()
  66 };
  67
  68 // MyRightLabels
  69
  70 class MyRightLabels: public wxWindow
  71 {
  72 public:
  73     MyRightLabels() {}
  74     MyRightLabels( wxScrolledWindow *parent, wxWindowID id, const wxPoint &pos, const wxSize &size );
  75
  76     void OnPaint( wxPaintEvent &event );
  77
  78 private:
  79     wxScrolledWindow   *m_owner;
  80
  81     DECLARE_DYNAMIC_CLASS(MyRightLabels)
  82     DECLARE_EVENT_TABLE()
  83 };
  84
  85 // MyCanvas
  86
  87 class MyCanvas: public wxPanel
  88 {
  89 public:
  90     MyCanvas(){};
  91     MyCanvas( wxScrolledWindow *parent, MyTopLabels *top, MyRightLabels *right,
  92               wxWindowID id, const wxPoint &pos, const wxSize &size );
  93     ~MyCanvas(){};
  94     void OnPaint( wxPaintEvent &event );
  95     void ScrollWindow( int dx, int dy, const wxRect *rect );
  96
  97 private:
  98     wxScrolledWindow   *m_owner;
  99     MyTopLabels        *m_topLabels;
 100     MyRightLabels      *m_rightLabels;
 101
 102     DECLARE_DYNAMIC_CLASS(MyCanvas)
 103     DECLARE_EVENT_TABLE()
 104 };
 105
 106 // MyFrame
 107
 108 class MyFrame: public wxFrame
 109 {
 110 public:
 111     MyFrame();
 112
 113     void OnAbout( wxCommandEvent &event );
 114     void OnQuit( wxCommandEvent &event );
 115     void OnFullScreen( wxCommandEvent &event );
 116
 117     wxScrolledWindow   *m_scrolled;
 118 #if wxUSE_LOG
 119     wxTextCtrl         *m_log;
 120 #endif // wxUSE_LOG
 121
 122 private:
 123     DECLARE_DYNAMIC_CLASS(MyFrame)
 124     DECLARE_EVENT_TABLE()
 125 };
 126
 127 // MyApp
 128
 129 class MyApp: public wxApp
 130 {
 131 public:
 132     virtual bool OnInit();
 133 };
 134
 135 // main program
 136
 137 IMPLEMENT_APP(MyApp)
 138
 139 // MyScrolledWindow
 140
 141 IMPLEMENT_DYNAMIC_CLASS(MyScrolledWindow, wxScrolledWindow)
 142
 143 BEGIN_EVENT_TABLE(MyScrolledWindow, wxScrolledWindow)
 144   EVT_PAINT(      MyScrolledWindow::OnPaint)
 145   EVT_SIZE(       MyScrolledWindow::OnSize)
 146 END_EVENT_TABLE()
 147
 148 MyScrolledWindow::MyScrolledWindow( wxWindow *parent, wxWindowID id,
 149                     const wxPoint &pos, const wxSize &size )
 150         : wxScrolledWindow( parent, id, pos, size, wxSUNKEN_BORDER, _T("test canvas") )
 151 {
 152     MyTopLabels *top = new MyTopLabels( this, wxID_ANY, wxDefaultPosition, wxSize(wxDefaultCoord,25) );
 153     MyRightLabels *right = new MyRightLabels( this, wxID_ANY, wxDefaultPosition, wxSize(60,wxDefaultCoord) );
 154
 155     m_canvas = new MyCanvas( this, top, right, wxID_ANY, wxDefaultPosition, wxDefaultSize );
 156
 157     SetTargetWindow( m_canvas );
 158
 159     SetBackgroundColour( wxT("WHEAT") );
 160
 161     SetCursor( wxCursor( wxCURSOR_HAND ) );
 162
 163     wxBoxSizer *mainsizer = new wxBoxSizer( wxVERTICAL );
 164
 165     wxBoxSizer *topsizer = new wxBoxSizer( wxHORIZONTAL );
 166     topsizer->Add( 60,25 );
 167     topsizer->Add( top, 1, wxEXPAND );
 168
 169     mainsizer->Add( topsizer, 0, wxEXPAND );
 170
 171     wxBoxSizer *middlesizer = new wxBoxSizer( wxHORIZONTAL );
 172     middlesizer->Add( right, 0, wxEXPAND );
 173     middlesizer->Add( m_canvas, 1, wxEXPAND );
 174
 175     mainsizer->Add( middlesizer, 1, wxEXPAND );
 176
 177     SetAutoLayout( true );
 178     SetSizer( mainsizer );
 179 }
 180
 181 void MyScrolledWindow::OnSize( wxSizeEvent &WXUNUSED(event) )
 182 {
 183     // We need to override OnSize so that our scrolled
 184     // window a) does call Layout() to use sizers for
 185     // positioning the controls but b) does not query
 186     // the sizer for their size and use that for setting
 187     // the scrollable area as set that ourselves by
 188     // calling SetScrollbar() further down.
 189
 190     Layout();
 191
 192     AdjustScrollbars();
 193 }
 194
 195 void MyScrolledWindow::OnPaint( wxPaintEvent &WXUNUSED(event) )
 196 {
 197     wxPaintDC dc( this );
 198
 199 /*
 200     wxSize size( GetClientSize() );
 201
 202     long w,h;
 203     dc.GetTextExtent( wxT("Headline"), &w, &h );
 204
 205     dc.DrawText( wxT("Headline"), long (size.x / 2 - w / 2), 10 );
 206 */
 207 }
 208
 209 // MyTopLabels
 210
 211 IMPLEMENT_DYNAMIC_CLASS(MyTopLabels,wxWindow)
 212
 213 BEGIN_EVENT_TABLE(MyTopLabels, wxWindow)
 214   EVT_PAINT(      MyTopLabels::OnPaint)
 215 END_EVENT_TABLE()
 216
 217 MyTopLabels::MyTopLabels( wxScrolledWindow *parent, wxWindowID id, const wxPoint &pos, const wxSize &size )
 218   : wxWindow( parent, id, pos, size )
 219 {
 220     m_owner = parent;
 221 }
 222
 223 void MyTopLabels::OnPaint( wxPaintEvent& WXUNUSED(event) )
 224 {
 225     wxPaintDC dc(this);
 226
 227     // This is wrong..  it will translate both x and y if the
 228     // window is scrolled, the label windows are active in one
 229     // direction only.  Do the action below instead -- RL.
 230     //m_owner->PrepareDC( dc );
 231
 232     int xScrollUnits, xOrigin;
 233
 234     m_owner->GetViewStart( &xOrigin, 0 );
 235     m_owner->GetScrollPixelsPerUnit( &xScrollUnits, 0 );
 236     dc.SetDeviceOrigin( -xOrigin * xScrollUnits, 0 );
 237
 238     dc.DrawText( _T("Column 1"), 5, 5 );
 239     dc.DrawText( _T("Column 2"), 105, 5 );
 240     dc.DrawText( _T("Column 3"), 205, 5 );
 241 }
 242
 243 // MyRightLabels
 244
 245 IMPLEMENT_DYNAMIC_CLASS(MyRightLabels,wxWindow)
 246
 247 BEGIN_EVENT_TABLE(MyRightLabels, wxWindow)
 248   EVT_PAINT(      MyRightLabels::OnPaint)
 249 END_EVENT_TABLE()
 250
 251 MyRightLabels::MyRightLabels( wxScrolledWindow *parent, wxWindowID id, const wxPoint &pos, const wxSize &size )
 252   : wxWindow( parent, id, pos, size )
 253 {
 254     m_owner = parent;
 255 }
 256
 257 void MyRightLabels::OnPaint( wxPaintEvent& WXUNUSED(event) )
 258 {
 259     wxPaintDC dc(this);
 260
 261     // This is wrong..  it will translate both x and y if the
 262     // window is scrolled, the label windows are active in one
 263     // direction only.  Do the action below instead -- RL.
 264     //m_owner->PrepareDC( dc );
 265
 266     int yScrollUnits, yOrigin;
 267
 268     m_owner->GetViewStart( 0, &yOrigin );
 269     m_owner->GetScrollPixelsPerUnit( 0, &yScrollUnits );
 270     dc.SetDeviceOrigin( 0, -yOrigin * yScrollUnits );
 271
 272     dc.DrawText( _T("Row 1"), 5, 5 );
 273     dc.DrawText( _T("Row 2"), 5, 30 );
 274     dc.DrawText( _T("Row 3"), 5, 55 );
 275     dc.DrawText( _T("Row 4"), 5, 80 );
 276     dc.DrawText( _T("Row 5"), 5, 105 );
 277     dc.DrawText( _T("Row 6"), 5, 130 );
 278 }
 279
 280 // MyCanvas
 281
 282 IMPLEMENT_DYNAMIC_CLASS(MyCanvas, wxPanel)
 283
 284 BEGIN_EVENT_TABLE(MyCanvas, wxPanel)
 285   EVT_PAINT(      MyCanvas::OnPaint)
 286 END_EVENT_TABLE()
 287
 288 MyCanvas::MyCanvas( wxScrolledWindow *parent, MyTopLabels *top, MyRightLabels *right,
 289     wxWindowID id, const wxPoint &pos, const wxSize &size )
 290         : wxPanel( parent, id, pos, size, wxSUNKEN_BORDER, _T("test canvas") )
 291 {
 292     m_owner = parent;
 293     m_topLabels = top;
 294     m_rightLabels = right;
 295
 296     (void)new wxButton( this, wxID_ANY, _T("Hallo I"), wxPoint(0,50), wxSize(100,25) );
 297     (void)new wxButton( this, wxID_ANY, _T("Hallo II"), wxPoint(200,50), wxSize(100,25) );
 298
 299     (void)new wxTextCtrl( this, wxID_ANY, _T("Text I"), wxPoint(0,100), wxSize(100,25) );
 300     (void)new wxTextCtrl( this, wxID_ANY, _T("Text II"), wxPoint(200,100), wxSize(100,25) );
 301
 302     (void)new wxComboBox( this, wxID_ANY, _T("ComboBox I"), wxPoint(0,150), wxSize(100,25));
 303     (void)new wxComboBox( this, wxID_ANY, _T("ComboBox II"), wxPoint(200,150), wxSize(100,25));
 304
 305     SetBackgroundColour( wxT("WHEAT") );
 306
 307     SetCursor( wxCursor( wxCURSOR_IBEAM ) );
 308 }
 309
 310 void MyCanvas::OnPaint( wxPaintEvent &WXUNUSED(event) )
 311 {
 312     wxPaintDC dc( this );
 313     m_owner->PrepareDC( dc );
 314
 315     dc.SetPen( *wxBLACK_PEN );
 316
 317     // OK, let's assume we are a grid control and we have two
 318     // grid cells. Here in OnPaint we want to know which cell
 319     // to redraw so that we prevent redrawing cells that don't
 320     // need to get redrawn. We have one cell at (0,0) and one
 321     // more at (200,0), both having a size of (100,25).
 322
 323     // We can query how much the window has been scrolled
 324     // by calling CalcUnscrolledPosition()
 325
 326     int scroll_x = 0;
 327     int scroll_y = 0;
 328     m_owner->CalcUnscrolledPosition( scroll_x, scroll_y, &scroll_x, &scroll_y );
 329
 330     // We also need to know the size of the window to see which
 331     // cells are completely hidden and not get redrawn
 332
 333     int size_x = 0;
 334     int size_y = 0;
 335     GetClientSize( &size_x, &size_y );
 336
 337     // First cell: (0,0)(100,25)
 338     // It it on screen?
 339     if ((0+100-scroll_x > 0) && (0+25-scroll_y > 0) &&
 340         (0-scroll_x < size_x) && (0-scroll_y < size_y))
 341     {
 342         // Has the region on screen been exposed?
 343         if (IsExposed(0,0,100,25))
 344         {
 345             wxLogMessage( wxT("Redraw first cell") );
 346             dc.DrawRectangle( 0, 0, 100, 25 );
 347             dc.DrawText( _T("First Cell"), 5, 5 );
 348         }
 349     }
 350
 351
 352     // Second cell: (0,200)(100,25)
 353     // It it on screen?
 354     if ((200+100-scroll_x > 0) && (0+25-scroll_y > 0) &&
 355         (200-scroll_x < size_x) && (0-scroll_y < size_y))
 356     {
 357         // Has the region on screen been exposed?
 358         if (IsExposed(200,0,100,25))
 359         {
 360             wxLogMessage( wxT("Redraw second cell") );
 361             dc.DrawRectangle( 200, 0, 100, 25 );
 362             dc.DrawText( _T("Second Cell"), 205, 5 );
 363         }
 364     }
 365
 366 }
 367
 368 void MyCanvas::ScrollWindow( int dx, int dy, const wxRect *rect )
 369 {
 370     wxPanel::ScrollWindow( dx, dy, rect );
 371     m_topLabels->ScrollWindow( dx, 0, rect );
 372     m_rightLabels->ScrollWindow( 0, dy, rect );
 373 }
 374
 375 // MyFrame
 376
 377 const int ID_QUIT  = wxID_EXIT;
 378 const int ID_FULL  = 109;
 379 const int ID_ABOUT = wxID_ABOUT;
 380
 381 IMPLEMENT_DYNAMIC_CLASS( MyFrame, wxFrame )
 382
 383 BEGIN_EVENT_TABLE(MyFrame,wxFrame)
 384   EVT_MENU    (ID_ABOUT, MyFrame::OnAbout)
 385   EVT_MENU    (ID_QUIT,  MyFrame::OnQuit)
 386   EVT_MENU    (ID_FULL,  MyFrame::OnFullScreen)
 387 END_EVENT_TABLE()
 388
 389 MyFrame::MyFrame()
 390        : wxFrame( (wxFrame *)NULL, wxID_ANY, _T("wxScrolledWindow sample"),
 391                   wxPoint(20,20), wxSize(470,500) )
 392 {
 393     wxMenu *file_menu = new wxMenu();
 394     file_menu->Append( ID_ABOUT, _T("&About..."));
 395     file_menu->Append( ID_FULL, _T("&Full screen on/off"));
 396     file_menu->Append( ID_QUIT, _T("E&xit\tAlt-X"));
 397
 398     wxMenuBar *menu_bar = new wxMenuBar();
 399     menu_bar->Append(file_menu, _T("&File"));
 400
 401     SetMenuBar( menu_bar );
 402
 403 #if wxUSE_STATUSBAR
 404     CreateStatusBar(2);
 405     int widths[] = { -1, 100 };
 406     SetStatusWidths( 2, widths );
 407 #endif // wxUSE_STATUSBAR
 408
 409     m_scrolled = new MyScrolledWindow( this, wxID_ANY, wxDefaultPosition, wxSize(100,100) );
 410     m_scrolled->SetScrollbars( 10, 10, 50, 50 );
 411
 412 #if wxUSE_LOG
 413     m_log = new wxTextCtrl( this, wxID_ANY, _T("This is the log window.\n"), wxPoint(0,0), wxSize(100,100), wxTE_MULTILINE );
 414     wxLog *old_log = wxLog::SetActiveTarget( new wxLogTextCtrl( m_log ) );
 415     delete old_log;
 416 #endif // wxUSE_LOG
 417
 418     wxBoxSizer *topsizer = new wxBoxSizer( wxVERTICAL );
 419     topsizer->Add( m_scrolled, 1, wxEXPAND );
 420 #if wxUSE_LOG
 421     topsizer->Add( m_log, 0, wxEXPAND );
 422 #endif // wxUSE_LOG
 423
 424     SetAutoLayout( true );
 425     SetSizer( topsizer );
 426 }
 427
 428 void MyFrame::OnQuit( wxCommandEvent &WXUNUSED(event) )
 429 {
 430   Close( true );
 431 }
 432
 433 void MyFrame::OnFullScreen( wxCommandEvent &WXUNUSED(event) )
 434 {
 435    ShowFullScreen( !IsFullScreen(), wxFULLSCREEN_NOBORDER|wxFULLSCREEN_NOCAPTION );
 436 }
 437
 438 void MyFrame::OnAbout( wxCommandEvent &WXUNUSED(event) )
 439 {
 440   (void)wxMessageBox( _T("wxScroll demo II\n")
 441                       _T("Robert Roebling (c) 1998"),
 442                       _T("About wxScroll II Demo"), wxICON_INFORMATION | wxOK );
 443 }
 444
 445 //-----------------------------------------------------------------------------
 446 // MyApp
 447 //-----------------------------------------------------------------------------
 448
 449 bool MyApp::OnInit()
 450 {
 451     wxFrame *frame = new MyFrame();
 452     frame->Show( true );
 453
 454     return true;
 455 }
 456