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
  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 END_EVENT_TABLE()
 146
 147 MyScrolledWindow::MyScrolledWindow( wxWindow *parent, wxWindowID id,
 148                     const wxPoint &pos, const wxSize &size )
 149         : wxScrolledWindow( parent, id, pos, size, wxSUNKEN_BORDER, _T("test canvas") )
 150 {
 151     MyTopLabels *top = new MyTopLabels( this, wxID_ANY, wxDefaultPosition, wxSize(wxDefaultCoord,25) );
 152     MyRightLabels *right = new MyRightLabels( this, wxID_ANY, wxDefaultPosition, wxSize(60,wxDefaultCoord) );
 153
 154     m_canvas = new MyCanvas( this, top, right, wxID_ANY, wxDefaultPosition, wxDefaultSize );
 155
 156     SetTargetWindow( m_canvas );
 157
 158     SetBackgroundColour( wxT("WHEAT") );
 159
 160     SetCursor( wxCursor( wxCURSOR_HAND ) );
 161
 162     wxBoxSizer *mainsizer = new wxBoxSizer( wxVERTICAL );
 163
 164     wxBoxSizer *topsizer = new wxBoxSizer( wxHORIZONTAL );
 165     topsizer->Add( 60,25 );
 166     topsizer->Add( top, 1, wxEXPAND );
 167
 168     mainsizer->Add( topsizer, 0, wxEXPAND );
 169
 170     wxBoxSizer *middlesizer = new wxBoxSizer( wxHORIZONTAL );
 171     middlesizer->Add( right, 0, wxEXPAND );
 172     middlesizer->Add( m_canvas, 1, wxEXPAND );
 173
 174     mainsizer->Add( middlesizer, 1, wxEXPAND );
 175
 176     SetAutoLayout( true );
 177     SetSizer( mainsizer );
 178 }
 179
 180 void MyScrolledWindow::OnPaint( wxPaintEvent &WXUNUSED(event) )
 181 {
 182     wxPaintDC dc( this );
 183
 184 /*
 185     wxSize size( GetClientSize() );
 186
 187     long w,h;
 188     dc.GetTextExtent( wxT("Headline"), &w, &h );
 189
 190     dc.DrawText( wxT("Headline"), long (size.x / 2 - w / 2), 10 );
 191 */
 192 }
 193
 194 // MyTopLabels
 195
 196 IMPLEMENT_DYNAMIC_CLASS(MyTopLabels,wxWindow)
 197
 198 BEGIN_EVENT_TABLE(MyTopLabels, wxWindow)
 199   EVT_PAINT(      MyTopLabels::OnPaint)
 200 END_EVENT_TABLE()
 201
 202 MyTopLabels::MyTopLabels( wxScrolledWindow *parent, wxWindowID id, const wxPoint &pos, const wxSize &size )
 203   : wxWindow( parent, id, pos, size )
 204 {
 205     m_owner = parent;
 206 }
 207
 208 void MyTopLabels::OnPaint( wxPaintEvent& WXUNUSED(event) )
 209 {
 210     wxPaintDC dc(this);
 211
 212     // This is wrong..  it will translate both x and y if the
 213     // window is scrolled, the label windows are active in one
 214     // direction only.  Do the action below instead -- RL.
 215     //m_owner->PrepareDC( dc );
 216
 217     int xScrollUnits, xOrigin;
 218
 219     m_owner->GetViewStart( &xOrigin, 0 );
 220     m_owner->GetScrollPixelsPerUnit( &xScrollUnits, 0 );
 221     dc.SetDeviceOrigin( -xOrigin * xScrollUnits, 0 );
 222
 223     dc.DrawText( _T("Column 1"), 5, 5 );
 224     dc.DrawText( _T("Column 2"), 105, 5 );
 225     dc.DrawText( _T("Column 3"), 205, 5 );
 226 }
 227
 228 // MyRightLabels
 229
 230 IMPLEMENT_DYNAMIC_CLASS(MyRightLabels,wxWindow)
 231
 232 BEGIN_EVENT_TABLE(MyRightLabels, wxWindow)
 233   EVT_PAINT(      MyRightLabels::OnPaint)
 234 END_EVENT_TABLE()
 235
 236 MyRightLabels::MyRightLabels( wxScrolledWindow *parent, wxWindowID id, const wxPoint &pos, const wxSize &size )
 237   : wxWindow( parent, id, pos, size )
 238 {
 239     m_owner = parent;
 240 }
 241
 242 void MyRightLabels::OnPaint( wxPaintEvent& WXUNUSED(event) )
 243 {
 244     wxPaintDC dc(this);
 245
 246     // This is wrong..  it will translate both x and y if the
 247     // window is scrolled, the label windows are active in one
 248     // direction only.  Do the action below instead -- RL.
 249     //m_owner->PrepareDC( dc );
 250
 251     int yScrollUnits, yOrigin;
 252
 253     m_owner->GetViewStart( 0, &yOrigin );
 254     m_owner->GetScrollPixelsPerUnit( 0, &yScrollUnits );
 255     dc.SetDeviceOrigin( 0, -yOrigin * yScrollUnits );
 256
 257     dc.DrawText( _T("Row 1"), 5, 5 );
 258     dc.DrawText( _T("Row 2"), 5, 30 );
 259     dc.DrawText( _T("Row 3"), 5, 55 );
 260     dc.DrawText( _T("Row 4"), 5, 80 );
 261     dc.DrawText( _T("Row 5"), 5, 105 );
 262     dc.DrawText( _T("Row 6"), 5, 130 );
 263 }
 264
 265 // MyCanvas
 266
 267 IMPLEMENT_DYNAMIC_CLASS(MyCanvas, wxPanel)
 268
 269 BEGIN_EVENT_TABLE(MyCanvas, wxPanel)
 270   EVT_PAINT(      MyCanvas::OnPaint)
 271 END_EVENT_TABLE()
 272
 273 MyCanvas::MyCanvas( wxScrolledWindow *parent, MyTopLabels *top, MyRightLabels *right,
 274     wxWindowID id, const wxPoint &pos, const wxSize &size )
 275         : wxPanel( parent, id, pos, size, wxSUNKEN_BORDER, _T("test canvas") )
 276 {
 277     m_owner = parent;
 278     m_topLabels = top;
 279     m_rightLabels = right;
 280
 281     (void)new wxButton( this, wxID_ANY, _T("Hallo I"), wxPoint(0,50), wxSize(100,25) );
 282     (void)new wxButton( this, wxID_ANY, _T("Hallo II"), wxPoint(200,50), wxSize(100,25) );
 283
 284     (void)new wxTextCtrl( this, wxID_ANY, _T("Text I"), wxPoint(0,100), wxSize(100,25) );
 285     (void)new wxTextCtrl( this, wxID_ANY, _T("Text II"), wxPoint(200,100), wxSize(100,25) );
 286
 287     (void)new wxComboBox( this, wxID_ANY, _T("ComboBox I"), wxPoint(0,150), wxSize(100,25));
 288     (void)new wxComboBox( this, wxID_ANY, _T("ComboBox II"), wxPoint(200,150), wxSize(100,25));
 289
 290     SetBackgroundColour( wxT("WHEAT") );
 291
 292     SetCursor( wxCursor( wxCURSOR_IBEAM ) );
 293 }
 294
 295 void MyCanvas::OnPaint( wxPaintEvent &WXUNUSED(event) )
 296 {
 297     wxPaintDC dc( this );
 298     m_owner->PrepareDC( dc );
 299
 300     dc.SetPen( *wxBLACK_PEN );
 301
 302     // OK, let's assume we are a grid control and we have two
 303     // grid cells. Here in OnPaint we want to know which cell
 304     // to redraw so that we prevent redrawing cells that don't
 305     // need to get redrawn. We have one cell at (0,0) and one
 306     // more at (200,0), both having a size of (100,25).
 307
 308     // We can query how much the window has been scrolled
 309     // by calling CalcUnscrolledPosition()
 310
 311     int scroll_x = 0;
 312     int scroll_y = 0;
 313     m_owner->CalcUnscrolledPosition( scroll_x, scroll_y, &scroll_x, &scroll_y );
 314
 315     // We also need to know the size of the window to see which
 316     // cells are completely hidden and not get redrawn
 317
 318     int size_x = 0;
 319     int size_y = 0;
 320     GetClientSize( &size_x, &size_y );
 321
 322     // First cell: (0,0)(100,25)
 323     // It it on screen?
 324     if ((0+100-scroll_x > 0) && (0+25-scroll_y > 0) &&
 325         (0-scroll_x < size_x) && (0-scroll_y < size_y))
 326     {
 327         // Has the region on screen been exposed?
 328         if (IsExposed(0,0,100,25))
 329         {
 330             wxLogMessage( wxT("Redraw first cell") );
 331             dc.DrawRectangle( 0, 0, 100, 25 );
 332             dc.DrawText( _T("First Cell"), 5, 5 );
 333         }
 334     }
 335
 336
 337     // Second cell: (0,200)(100,25)
 338     // It it on screen?
 339     if ((200+100-scroll_x > 0) && (0+25-scroll_y > 0) &&
 340         (200-scroll_x < size_x) && (0-scroll_y < size_y))
 341     {
 342         // Has the region on screen been exposed?
 343         if (IsExposed(200,0,100,25))
 344         {
 345             wxLogMessage( wxT("Redraw second cell") );
 346             dc.DrawRectangle( 200, 0, 100, 25 );
 347             dc.DrawText( _T("Second Cell"), 205, 5 );
 348         }
 349     }
 350
 351 }
 352
 353 void MyCanvas::ScrollWindow( int dx, int dy, const wxRect *rect )
 354 {
 355     wxPanel::ScrollWindow( dx, dy, rect );
 356     m_topLabels->ScrollWindow( dx, 0, rect );
 357     m_rightLabels->ScrollWindow( 0, dy, rect );
 358 }
 359
 360 // MyFrame
 361
 362 const int ID_QUIT  = 108;
 363 const int ID_FULL  = 109;
 364 const int ID_ABOUT = 110;
 365
 366 IMPLEMENT_DYNAMIC_CLASS( MyFrame, wxFrame )
 367
 368 BEGIN_EVENT_TABLE(MyFrame,wxFrame)
 369   EVT_MENU    (ID_ABOUT, MyFrame::OnAbout)
 370   EVT_MENU    (ID_QUIT,  MyFrame::OnQuit)
 371   EVT_MENU    (ID_FULL,  MyFrame::OnFullScreen)
 372 END_EVENT_TABLE()
 373
 374 MyFrame::MyFrame()
 375        : wxFrame( (wxFrame *)NULL, wxID_ANY, _T("wxScrolledWindow sample"),
 376                   wxPoint(20,20), wxSize(470,500) )
 377 {
 378     wxMenu *file_menu = new wxMenu();
 379     file_menu->Append( ID_ABOUT, _T("&About..."));
 380     file_menu->Append( ID_FULL, _T("&Full screen on/off"));
 381     file_menu->Append( ID_QUIT, _T("E&xit\tAlt-X"));
 382
 383     wxMenuBar *menu_bar = new wxMenuBar();
 384     menu_bar->Append(file_menu, _T("&File"));
 385
 386     SetMenuBar( menu_bar );
 387
 388 #if wxUSE_STATUSBAR
 389     CreateStatusBar(2);
 390     int widths[] = { -1, 100 };
 391     SetStatusWidths( 2, widths );
 392 #endif // wxUSE_STATUSBAR
 393
 394     m_scrolled = new MyScrolledWindow( this, wxID_ANY, wxDefaultPosition, wxSize(100,100) );
 395     m_scrolled->SetScrollbars( 10, 10, 50, 50 );
 396
 397 #if wxUSE_LOG
 398     m_log = new wxTextCtrl( this, wxID_ANY, _T("This is the log window.\n"), wxPoint(0,0), wxSize(100,100), wxTE_MULTILINE );
 399     wxLog *old_log = wxLog::SetActiveTarget( new wxLogTextCtrl( m_log ) );
 400     delete old_log;
 401 #endif // wxUSE_LOG
 402
 403     wxBoxSizer *topsizer = new wxBoxSizer( wxVERTICAL );
 404     topsizer->Add( m_scrolled, 1, wxEXPAND );
 405 #if wxUSE_LOG
 406     topsizer->Add( m_log, 0, wxEXPAND );
 407 #endif // wxUSE_LOG
 408
 409     SetAutoLayout( true );
 410     SetSizer( topsizer );
 411 }
 412
 413 void MyFrame::OnQuit( wxCommandEvent &WXUNUSED(event) )
 414 {
 415   Close( true );
 416 }
 417
 418 void MyFrame::OnFullScreen( wxCommandEvent &WXUNUSED(event) )
 419 {
 420    ShowFullScreen( !IsFullScreen(), wxFULLSCREEN_NOBORDER|wxFULLSCREEN_NOCAPTION );
 421 }
 422
 423 void MyFrame::OnAbout( wxCommandEvent &WXUNUSED(event) )
 424 {
 425   (void)wxMessageBox( _T("wxScroll demo II\n")
 426                       _T("Robert Roebling (c) 1998"),
 427                       _T("About wxScroll II Demo"), wxICON_INFORMATION | wxOK );
 428 }
 429
 430 //-----------------------------------------------------------------------------
 431 // MyApp
 432 //-----------------------------------------------------------------------------
 433
 434 bool MyApp::OnInit()
 435 {
 436     wxFrame *frame = new MyFrame();
 437     frame->Show( true );
 438
 439     return true;
 440 }
 441