samples/splitter/splitter.cpp

   1 /////////////////////////////////////////////////////////////////////////////
   2 // Name:        splitter.cpp
   3 // Purpose:     wxSplitterWindow sample
   4 // Author:      Julian Smart
   5 // Modified by:
   6 // Created:     04/01/98
   7 // RCS-ID:      $Id$
   8 // Copyright:   (c) Julian Smart
   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/log.h"
  29
  30     #include "wx/app.h"
  31     #include "wx/frame.h"
  32
  33     #include "wx/scrolwin.h"
  34     #include "wx/menu.h"
  35
  36     #include "wx/textdlg.h"       // for wxGetTextFromUser
  37 #endif
  38
  39 #include "wx/splitter.h"
  40 #include "wx/dc.h"
  41
  42 // ----------------------------------------------------------------------------
  43 // constants
  44 // ----------------------------------------------------------------------------
  45
  46 // ID for the menu commands
  47 enum
  48 {
  49     SPLIT_QUIT,
  50     SPLIT_HORIZONTAL,
  51     SPLIT_VERTICAL,
  52     SPLIT_UNSPLIT,
  53     SPLIT_LIVE,
  54     SPLIT_SETPOSITION,
  55     SPLIT_SETMINSIZE
  56 };
  57
  58 // ----------------------------------------------------------------------------
  59 // our classes
  60 // ----------------------------------------------------------------------------
  61
  62 class MyApp: public wxApp
  63 {
  64 public:
  65     bool OnInit();
  66 };
  67
  68 class MyFrame: public wxFrame
  69 {
  70 public:
  71     MyFrame();
  72     virtual ~MyFrame();
  73
  74     // Menu commands
  75     void SplitHorizontal(wxCommandEvent& event);
  76     void SplitVertical(wxCommandEvent& event);
  77     void Unsplit(wxCommandEvent& event);
  78     void ToggleLive(wxCommandEvent& event);
  79     void SetPosition(wxCommandEvent& event);
  80     void SetMinSize(wxCommandEvent& event);
  81
  82     void Quit(wxCommandEvent& event);
  83
  84     // Menu command update functions
  85     void UpdateUIHorizontal(wxUpdateUIEvent& event);
  86     void UpdateUIVertical(wxUpdateUIEvent& event);
  87     void UpdateUIUnsplit(wxUpdateUIEvent& event);
  88
  89 private:
  90     wxScrolledWindow *m_left, *m_right;
  91
  92     wxSplitterWindow* m_splitter;
  93
  94     DECLARE_EVENT_TABLE()
  95 };
  96
  97 class MySplitterWindow : public wxSplitterWindow
  98 {
  99 public:
 100     MySplitterWindow(wxFrame *parent);
 101
 102     // event handlers
 103     void OnPositionChanged(wxSplitterEvent& event);
 104     void OnPositionChanging(wxSplitterEvent& event);
 105     void OnDClick(wxSplitterEvent& event);
 106     void OnUnsplit(wxSplitterEvent& event);
 107
 108 private:
 109     wxFrame *m_frame;
 110
 111     DECLARE_EVENT_TABLE()
 112 };
 113
 114 class MyCanvas: public wxScrolledWindow
 115 {
 116 public:
 117     MyCanvas(wxWindow* parent);
 118     virtual ~MyCanvas();
 119
 120     virtual void OnDraw(wxDC& dc);
 121 };
 122
 123 // ============================================================================
 124 // implementation
 125 // ============================================================================
 126
 127 // ----------------------------------------------------------------------------
 128 // MyApp
 129 // ----------------------------------------------------------------------------
 130
 131 IMPLEMENT_APP(MyApp)
 132
 133 bool MyApp::OnInit()
 134 {
 135     // create and show the main frame
 136     MyFrame* frame = new MyFrame;
 137
 138     frame->Show(TRUE);
 139
 140     return TRUE;
 141 }
 142
 143 // ----------------------------------------------------------------------------
 144 // MyFrame
 145 // ----------------------------------------------------------------------------
 146
 147 BEGIN_EVENT_TABLE(MyFrame, wxFrame)
 148     EVT_MENU(SPLIT_VERTICAL, MyFrame::SplitVertical)
 149     EVT_MENU(SPLIT_HORIZONTAL, MyFrame::SplitHorizontal)
 150     EVT_MENU(SPLIT_UNSPLIT, MyFrame::Unsplit)
 151     EVT_MENU(SPLIT_LIVE, MyFrame::ToggleLive)
 152     EVT_MENU(SPLIT_SETPOSITION, MyFrame::SetPosition)
 153     EVT_MENU(SPLIT_SETMINSIZE, MyFrame::SetMinSize)
 154
 155     EVT_MENU(SPLIT_QUIT, MyFrame::Quit)
 156
 157     EVT_UPDATE_UI(SPLIT_VERTICAL, MyFrame::UpdateUIVertical)
 158     EVT_UPDATE_UI(SPLIT_HORIZONTAL, MyFrame::UpdateUIHorizontal)
 159     EVT_UPDATE_UI(SPLIT_UNSPLIT, MyFrame::UpdateUIUnsplit)
 160 END_EVENT_TABLE()
 161
 162 // My frame constructor
 163 MyFrame::MyFrame()
 164        : wxFrame(NULL, -1, _T("wxSplitterWindow sample"),
 165                  wxDefaultPosition, wxSize(420, 300),
 166                  wxDEFAULT_FRAME_STYLE | wxNO_FULL_REPAINT_ON_RESIZE)
 167 {
 168     CreateStatusBar(2);
 169
 170     // Make a menubar
 171     wxMenu *splitMenu = new wxMenu;
 172     splitMenu->Append(SPLIT_VERTICAL,
 173                       _T("Split &Vertically\tCtrl-V"),
 174                       _T("Split vertically"));
 175     splitMenu->Append(SPLIT_HORIZONTAL,
 176                       _T("Split &Horizontally\tCtrl-H"),
 177                       _T("Split horizontally"));
 178     splitMenu->Append(SPLIT_UNSPLIT,
 179                       _T("&Unsplit\tCtrl-U"),
 180                       _T("Unsplit"));
 181     splitMenu->AppendSeparator();
 182
 183     splitMenu->AppendCheckItem(SPLIT_LIVE,
 184                                _T("&Live update\tCtrl-L"),
 185                                _T("Toggle live update mode"));
 186     splitMenu->Append(SPLIT_SETPOSITION,
 187                       _T("Set splitter &position\tCtrl-P"),
 188                       _T("Set the splitter position"));
 189     splitMenu->Append(SPLIT_SETMINSIZE,
 190                       _T("Set &min size\tCtrl-M"),
 191                       _T("Set minimum pane size"));
 192     splitMenu->AppendSeparator();
 193
 194     splitMenu->Append(SPLIT_QUIT, _T("E&xit\tAlt-X"), _T("Exit"));
 195
 196     wxMenuBar *menuBar = new wxMenuBar;
 197     menuBar->Append(splitMenu, _T("&Splitter"));
 198
 199     SetMenuBar(menuBar);
 200
 201     menuBar->Check(SPLIT_LIVE, TRUE);
 202     m_splitter = new MySplitterWindow(this);
 203
 204 #if 1
 205     m_left = new MyCanvas(m_splitter);
 206     m_left->SetBackgroundColour(*wxRED);
 207     m_left->SetScrollbars(20, 20, 50, 50);
 208     m_left->SetCursor(wxCursor(wxCURSOR_MAGNIFIER));
 209
 210     m_right = new MyCanvas(m_splitter);
 211     m_right->SetBackgroundColour(*wxCYAN);
 212     m_right->SetScrollbars(20, 20, 50, 50);
 213 #else // for testing kbd navigation inside the splitter
 214     m_left = new wxTextCtrl(m_splitter, -1, _T("first text"));
 215     m_right = new wxTextCtrl(m_splitter, -1, _T("second text"));
 216 #endif
 217
 218     // you can also do this to start with a single window
 219 #if 0
 220     m_right->Show(FALSE);
 221     m_splitter->Initialize(m_left);
 222 #else
 223     // you can also try -100
 224     m_splitter->SplitVertically(m_left, m_right, 100);
 225 #endif
 226
 227     SetStatusText(_T("Min pane size = 0"), 1);
 228 }
 229
 230 MyFrame::~MyFrame()
 231 {
 232 }
 233
 234 // menu command handlers
 235
 236 void MyFrame::Quit(wxCommandEvent& WXUNUSED(event) )
 237 {
 238     Close(TRUE);
 239 }
 240
 241 void MyFrame::SplitHorizontal(wxCommandEvent& WXUNUSED(event) )
 242 {
 243     if ( m_splitter->IsSplit() )
 244         m_splitter->Unsplit();
 245     m_left->Show(TRUE);
 246     m_right->Show(TRUE);
 247     m_splitter->SplitHorizontally( m_left, m_right );
 248
 249     SetStatusText(_T("Splitter split horizontally"), 1);
 250 }
 251
 252 void MyFrame::SplitVertical(wxCommandEvent& WXUNUSED(event) )
 253 {
 254     if ( m_splitter->IsSplit() )
 255         m_splitter->Unsplit();
 256     m_left->Show(TRUE);
 257     m_right->Show(TRUE);
 258     m_splitter->SplitVertically( m_left, m_right );
 259
 260     SetStatusText(_T("Splitter split vertically"), 1);
 261 }
 262
 263 void MyFrame::Unsplit(wxCommandEvent& WXUNUSED(event) )
 264 {
 265     if ( m_splitter->IsSplit() )
 266         m_splitter->Unsplit();
 267     SetStatusText(_T("No splitter"));
 268 }
 269
 270 void MyFrame::ToggleLive(wxCommandEvent& event )
 271 {
 272     long style = m_splitter->GetWindowStyleFlag();
 273     if ( event.IsChecked() )
 274         style |= wxSP_LIVE_UPDATE;
 275     else
 276         style &= ~wxSP_LIVE_UPDATE;
 277
 278     m_splitter->SetWindowStyleFlag(style);
 279 }
 280
 281 void MyFrame::SetPosition(wxCommandEvent& WXUNUSED(event) )
 282 {
 283     wxString str;
 284     str.Printf( wxT("%d"), m_splitter->GetSashPosition());
 285     str = wxGetTextFromUser(_T("Enter splitter position:"), _T(""), str, this);
 286     if ( str.empty() )
 287         return;
 288
 289     long pos;
 290     if ( !str.ToLong(&pos) )
 291     {
 292         wxLogError(_T("The splitter position should be an integer."));
 293         return;
 294     }
 295
 296     m_splitter->SetSashPosition(pos);
 297
 298     wxLogStatus(this, _T("Splitter position set to %ld"), pos);
 299 }
 300
 301 void MyFrame::SetMinSize(wxCommandEvent& WXUNUSED(event) )
 302 {
 303     wxString str;
 304     str.Printf( wxT("%d"), m_splitter->GetMinimumPaneSize());
 305     str = wxGetTextFromUser(_T("Enter minimal size for panes:"), _T(""), str, this);
 306     if ( str.empty() )
 307         return;
 308
 309     int minsize = wxStrtol( str, (wxChar**)NULL, 10 );
 310     m_splitter->SetMinimumPaneSize(minsize);
 311     str.Printf( wxT("Min pane size = %d"), minsize);
 312     SetStatusText(str, 1);
 313 }
 314
 315 // Update UI handlers
 316
 317 void MyFrame::UpdateUIHorizontal(wxUpdateUIEvent& event)
 318 {
 319     event.Enable( (!m_splitter->IsSplit()) || (m_splitter->GetSplitMode() != wxSPLIT_HORIZONTAL) );
 320 }
 321
 322 void MyFrame::UpdateUIVertical(wxUpdateUIEvent& event)
 323 {
 324     event.Enable( ( (!m_splitter->IsSplit()) || (m_splitter->GetSplitMode() != wxSPLIT_VERTICAL) ) );
 325 }
 326
 327 void MyFrame::UpdateUIUnsplit(wxUpdateUIEvent& event)
 328 {
 329     event.Enable( m_splitter->IsSplit() );
 330 }
 331
 332 // ----------------------------------------------------------------------------
 333 // MySplitterWindow
 334 // ----------------------------------------------------------------------------
 335
 336 BEGIN_EVENT_TABLE(MySplitterWindow, wxSplitterWindow)
 337     EVT_SPLITTER_SASH_POS_CHANGED(-1, MySplitterWindow::OnPositionChanged)
 338     EVT_SPLITTER_SASH_POS_CHANGING(-1, MySplitterWindow::OnPositionChanging)
 339
 340     EVT_SPLITTER_DCLICK(-1, MySplitterWindow::OnDClick)
 341
 342     EVT_SPLITTER_UNSPLIT(-1, MySplitterWindow::OnUnsplit)
 343 END_EVENT_TABLE()
 344
 345 MySplitterWindow::MySplitterWindow(wxFrame *parent)
 346                 : wxSplitterWindow(parent, -1,
 347                                    wxDefaultPosition, wxDefaultSize,
 348                                    wxSP_3D | wxSP_LIVE_UPDATE | wxCLIP_CHILDREN)
 349 {
 350     m_frame = parent;
 351 }
 352
 353 void MySplitterWindow::OnPositionChanged(wxSplitterEvent& event)
 354 {
 355     wxLogStatus(m_frame, _T("Position has changed, now = %d (or %d)"),
 356                 event.GetSashPosition(), GetSashPosition());
 357
 358     event.Skip();
 359 }
 360
 361 void MySplitterWindow::OnPositionChanging(wxSplitterEvent& event)
 362 {
 363     wxLogStatus(m_frame, _T("Position is changing, now = %d (or %d)"),
 364                 event.GetSashPosition(), GetSashPosition());
 365
 366     event.Skip();
 367 }
 368
 369 void MySplitterWindow::OnDClick(wxSplitterEvent& event)
 370 {
 371     m_frame->SetStatusText(_T("Splitter double clicked"), 1);
 372
 373     event.Skip();
 374 }
 375
 376 void MySplitterWindow::OnUnsplit(wxSplitterEvent& event)
 377 {
 378     m_frame->SetStatusText(_T("Splitter unsplit"), 1);
 379
 380     event.Skip();
 381 }
 382
 383 // ----------------------------------------------------------------------------
 384 // MyCanvas
 385 // ----------------------------------------------------------------------------
 386
 387 MyCanvas::MyCanvas(wxWindow* parent)
 388         : wxScrolledWindow(parent, -1)
 389 {
 390 }
 391
 392 MyCanvas::~MyCanvas()
 393 {
 394 }
 395
 396 void MyCanvas::OnDraw(wxDC& dc)
 397 {
 398     dc.SetPen(*wxBLACK_PEN);
 399     dc.DrawLine(0, 0, 100, 100);
 400
 401     dc.SetBackgroundMode(wxTRANSPARENT);
 402     dc.DrawText(_T("Testing"), 50, 50);
 403
 404     dc.SetPen(*wxRED_PEN);
 405     dc.SetBrush(*wxGREEN_BRUSH);
 406     dc.DrawRectangle(120, 120, 100, 80);
 407 }
 408