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 and Markus Holzem
   9 // Licence:     wxWindows license
  10 /////////////////////////////////////////////////////////////////////////////
  11
  12 // For compilers that support precompilation, includes "wx/wx.h".
  13 #include "wx/wxprec.h"
  14
  15 #ifdef __BORLANDC__
  16 #pragma hdrstop
  17 #endif
  18
  19 #ifndef WX_PRECOMP
  20 #include "wx/wx.h"
  21 #endif
  22
  23 #include "wx/splitter.h"
  24
  25 class MyApp;
  26 class MyFrame;
  27 class MyCanvas;
  28
  29 class MyApp: public wxApp
  30 {
  31 public:
  32   bool OnInit();
  33 };
  34
  35 class MySplitterWindow : public wxSplitterWindow
  36 {
  37 public:
  38   MySplitterWindow(wxFrame *parent, wxWindowID id)
  39     : wxSplitterWindow(parent, id, wxDefaultPosition, wxDefaultSize, wxSP_3D | wxSP_LIVE_UPDATE)
  40   {
  41     m_frame = parent;
  42   }
  43
  44   virtual bool OnSashPositionChange(int newSashPosition)
  45   {
  46     if ( !wxSplitterWindow::OnSashPositionChange(newSashPosition) )
  47       return FALSE;
  48
  49     wxString str;
  50     str.Printf( _T("Sash position = %d"), newSashPosition);
  51     m_frame->SetStatusText(str);
  52
  53     return TRUE;
  54   }
  55
  56 private:
  57   wxFrame *m_frame;
  58 };
  59
  60 class MyFrame: public wxFrame
  61 {
  62 public:
  63   MyFrame(wxFrame* frame, const wxString& title, const wxPoint& pos, const wxSize& size);
  64   virtual ~MyFrame();
  65
  66   // Menu commands
  67   void SplitHorizontal(wxCommandEvent& event);
  68   void SplitVertical(wxCommandEvent& event);
  69   void Unsplit(wxCommandEvent& event);
  70   void SetMinSize(wxCommandEvent& event);
  71   void Quit(wxCommandEvent& event);
  72
  73   // Menu command update functions
  74   void UpdateUIHorizontal(wxUpdateUIEvent& event);
  75   void UpdateUIVertical(wxUpdateUIEvent& event);
  76   void UpdateUIUnsplit(wxUpdateUIEvent& event);
  77
  78 private:
  79   void UpdatePosition();
  80
  81   wxMenu*    fileMenu;
  82   wxMenuBar*  menuBar;
  83   MyCanvas*  m_leftCanvas;
  84   MyCanvas*  m_rightCanvas;
  85   MySplitterWindow* m_splitter;
  86
  87 DECLARE_EVENT_TABLE()
  88 };
  89
  90 class MyCanvas: public wxScrolledWindow
  91 {
  92 public:
  93     MyCanvas(wxWindow* parent, wxWindowID id = -1, const wxPoint& pos = wxDefaultPosition, const wxSize& size = wxDefaultSize, const wxString& name = "");
  94     virtual ~MyCanvas();
  95
  96   virtual void OnDraw(wxDC& dc);
  97
  98 DECLARE_EVENT_TABLE()
  99 };
 100
 101 BEGIN_EVENT_TABLE(MyCanvas, wxScrolledWindow)
 102 END_EVENT_TABLE()
 103
 104 // ID for the menu commands
 105 enum
 106 {
 107   SPLIT_QUIT,
 108   SPLIT_HORIZONTAL,
 109   SPLIT_VERTICAL,
 110   SPLIT_UNSPLIT,
 111   SPLIT_SETMINSIZE
 112 };
 113
 114 // Window ids
 115 #define SPLITTER_WINDOW     100
 116 #define SPLITTER_FRAME      101
 117 #define CANVAS1             102
 118 #define CANVAS2             103
 119
 120 IMPLEMENT_APP(MyApp)
 121
 122 bool MyApp::OnInit(void)
 123 {
 124   MyFrame* frame = new MyFrame((wxFrame *) NULL, "wxSplitterWindow Example",
 125                                wxPoint(50, 50), wxSize(420, 300));
 126
 127   // Show the frame
 128   frame->Show(TRUE);
 129
 130   SetTopWindow(frame);
 131
 132   return TRUE;
 133 }
 134
 135 BEGIN_EVENT_TABLE(MyFrame, wxFrame)
 136   EVT_MENU(SPLIT_VERTICAL, MyFrame::SplitVertical)
 137   EVT_MENU(SPLIT_HORIZONTAL, MyFrame::SplitHorizontal)
 138   EVT_MENU(SPLIT_UNSPLIT, MyFrame::Unsplit)
 139   EVT_MENU(SPLIT_QUIT, MyFrame::Quit)
 140   EVT_MENU(SPLIT_SETMINSIZE, MyFrame::SetMinSize)
 141
 142   EVT_UPDATE_UI(SPLIT_VERTICAL, MyFrame::UpdateUIVertical)
 143   EVT_UPDATE_UI(SPLIT_HORIZONTAL, MyFrame::UpdateUIHorizontal)
 144   EVT_UPDATE_UI(SPLIT_UNSPLIT, MyFrame::UpdateUIUnsplit)
 145 END_EVENT_TABLE()
 146
 147 // My frame constructor
 148 MyFrame::MyFrame(wxFrame* frame, const wxString& title, const wxPoint& pos, const wxSize& size):
 149     wxFrame(frame, SPLITTER_FRAME, title, pos, size)
 150 {
 151   CreateStatusBar(2);
 152
 153   // Make a menubar
 154   fileMenu = new wxMenu;
 155   fileMenu->Append(SPLIT_VERTICAL, "Split &Vertically\tCtrl-V", "Split vertically");
 156   fileMenu->Append(SPLIT_HORIZONTAL, "Split &Horizontally\tCtrl-H", "Split horizontally");
 157   fileMenu->Append(SPLIT_UNSPLIT, "&Unsplit\tCtrl-U", "Unsplit");
 158   fileMenu->AppendSeparator();
 159   fileMenu->Append(SPLIT_SETMINSIZE, "Set &min size", "Set minimum pane size");
 160   fileMenu->AppendSeparator();
 161   fileMenu->Append(SPLIT_QUIT, "E&xit\tAlt-X", "Exit");
 162
 163   menuBar = new wxMenuBar;
 164   menuBar->Append(fileMenu, "&File");
 165
 166   SetMenuBar(menuBar);
 167
 168   m_splitter = new MySplitterWindow(this, SPLITTER_WINDOW);
 169
 170 #if 0
 171   wxSize sz( m_splitter->GetSize() );
 172   wxLogMessage( "Initial splitter size: %d %d\n", (int)sz.x, (int)sz.y );
 173 #endif // 0
 174
 175   m_leftCanvas = new MyCanvas(m_splitter, CANVAS1, wxPoint(0, 0), wxSize(400, 400), "Test1" );
 176   m_leftCanvas->SetBackgroundColour(*wxRED);
 177   m_leftCanvas->SetScrollbars(20, 20, 50, 50);
 178   m_leftCanvas->SetCursor(wxCursor(wxCURSOR_MAGNIFIER));
 179
 180   m_rightCanvas = new MyCanvas(m_splitter, CANVAS2, wxPoint(0, 0), wxSize(400, 400), "Test2" );
 181   m_rightCanvas->SetBackgroundColour(*wxCYAN);
 182   m_rightCanvas->SetScrollbars(20, 20, 50, 50);
 183
 184   // you can also do this to start with a single window
 185 #if 0
 186   m_rightCanvas->Show(FALSE);
 187   m_splitter->Initialize(m_leftCanvas);
 188 #else
 189   m_splitter->SplitVertically(m_leftCanvas, m_rightCanvas, 100);
 190 #endif
 191
 192   SetStatusText("Min pane size = 0", 1);
 193 }
 194
 195 MyFrame::~MyFrame()
 196 {
 197 }
 198
 199 void MyFrame::Quit(wxCommandEvent& WXUNUSED(event) )
 200 {
 201   Close(TRUE);
 202 }
 203
 204 void MyFrame::SplitHorizontal(wxCommandEvent& WXUNUSED(event) )
 205 {
 206   if ( m_splitter->IsSplit() )
 207     m_splitter->Unsplit();
 208   m_leftCanvas->Show(TRUE);
 209   m_rightCanvas->Show(TRUE);
 210   m_splitter->SplitHorizontally( m_leftCanvas, m_rightCanvas );
 211   UpdatePosition();
 212 }
 213
 214 void MyFrame::SplitVertical(wxCommandEvent& WXUNUSED(event) )
 215 {
 216   if ( m_splitter->IsSplit() )
 217     m_splitter->Unsplit();
 218   m_leftCanvas->Show(TRUE);
 219   m_rightCanvas->Show(TRUE);
 220   m_splitter->SplitVertically( m_leftCanvas, m_rightCanvas );
 221   UpdatePosition();
 222 }
 223
 224 void MyFrame::Unsplit(wxCommandEvent& WXUNUSED(event) )
 225 {
 226   if ( m_splitter->IsSplit() )
 227     m_splitter->Unsplit();
 228   SetStatusText("No splitter");
 229 }
 230
 231 void MyFrame::SetMinSize(wxCommandEvent& WXUNUSED(event) )
 232 {
 233   wxString str;
 234   str.Printf( _T("%d"), m_splitter->GetMinimumPaneSize());
 235   str = wxGetTextFromUser("Enter minimal size for panes:", "", str, this);
 236   if ( str.IsEmpty() )
 237     return;
 238
 239   int minsize = wxStrtol( str, (wxChar**)NULL, 10 );
 240   m_splitter->SetMinimumPaneSize(minsize);
 241   str.Printf( _T("Min pane size = %d"), minsize);
 242   SetStatusText(str, 1);
 243 }
 244
 245 void MyFrame::UpdateUIHorizontal(wxUpdateUIEvent& event)
 246 {
 247   event.Enable( ( (!m_splitter->IsSplit()) || (m_splitter->GetSplitMode() != wxSPLIT_HORIZONTAL) ) );
 248 }
 249
 250 void MyFrame::UpdateUIVertical(wxUpdateUIEvent& event)
 251 {
 252   event.Enable( ( (!m_splitter->IsSplit()) || (m_splitter->GetSplitMode() != wxSPLIT_VERTICAL) ) );
 253 }
 254
 255 void MyFrame::UpdateUIUnsplit(wxUpdateUIEvent& event)
 256 {
 257   event.Enable( m_splitter->IsSplit() );
 258 }
 259
 260 void MyFrame::UpdatePosition()
 261 {
 262   wxString str;
 263   str.Printf( _("Sash position = %d"), m_splitter->GetSashPosition());
 264   SetStatusText(str);
 265 }
 266
 267 MyCanvas::MyCanvas(wxWindow* parent, wxWindowID id, const wxPoint& point, const wxSize& size, const wxString &name ) :
 268     wxScrolledWindow(parent, id, point, size, 0, name )
 269 {
 270 }
 271
 272 MyCanvas::~MyCanvas()
 273 {
 274 }
 275
 276 void MyCanvas::OnDraw(wxDC& dc)
 277 {
 278   dc.SetPen(*wxBLACK_PEN);
 279   dc.DrawLine(0, 0, 100, 100);
 280
 281   dc.SetBackgroundMode(wxTRANSPARENT);
 282   dc.DrawText("Testing", 50, 50);
 283
 284   dc.SetPen(*wxRED_PEN);
 285   dc.SetBrush(*wxGREEN_BRUSH);
 286   dc.DrawRectangle(120, 120, 100, 80);
 287 }