samples/thread/test.cpp

   1 /////////////////////////////////////////////////////////////////////////////
   2 // Name:        test.cpp
   3 // Purpose:     wxWindows thread sample
   4 // Author:      Julian Smart(minimal)/Guilhem Lavaux(thread test)
   5 // Modified by:
   6 // Created:     06/16/98
   7 // RCS-ID:      $Id$
   8 // Copyright:   (c) Julian Smart, Markus Holzem, Guilhem Lavaux
   9 // Licence:     wxWindows license
  10 /////////////////////////////////////////////////////////////////////////////
  11
  12 #ifdef __GNUG__
  13 #pragma implementation "test.cpp"
  14 #pragma interface "test.cpp"
  15 #endif
  16
  17 // For compilers that support precompilation, includes "wx/wx.h".
  18 #include "wx/wxprec.h"
  19
  20 #ifdef __BORLANDC__
  21 #pragma hdrstop
  22 #endif
  23
  24 #ifndef WX_PRECOMP
  25 #include "wx/wx.h"
  26 #endif
  27
  28 #include "wx/thread.h"
  29 #include "wx/dynarray.h"
  30
  31 // Define a new application type
  32 class MyApp: public wxApp
  33 {
  34  public:
  35     bool OnInit(void);
  36 };
  37
  38 WX_DEFINE_ARRAY(wxThread *,wxArrayThread);
  39
  40 // Define a new frame type
  41 class MyFrame: public wxFrame
  42 {
  43  public:
  44     MyFrame(wxFrame *frame, char *title, int x, int y, int w, int h);
  45
  46  public:
  47     void OnQuit(wxCommandEvent& event);
  48     void OnAbout(wxCommandEvent& event);
  49     void OnStartThread(wxCommandEvent& event);
  50     void OnStopThread(wxCommandEvent& event);
  51     void OnPauseThread(wxCommandEvent& event);
  52     void OnSize(wxSizeEvent &event);
  53     bool OnClose(void) { return TRUE; }
  54
  55  public:
  56    wxArrayThread m_threads;
  57    wxTextCtrl *m_txtctrl;
  58
  59    DECLARE_EVENT_TABLE()
  60 };
  61
  62 class MyThread: public wxThread
  63 {
  64  public:
  65     MyThread(MyFrame *frame);
  66
  67     void *Entry();
  68  public:
  69     MyFrame *m_frame;
  70 };
  71
  72 MyThread::MyThread(MyFrame *frame)
  73   : wxThread()
  74 {
  75   m_frame = frame;
  76 }
  77
  78 void *MyThread::Entry()
  79 {
  80   wxString text;
  81
  82   text.Printf("Thread 0x%x: Hello !\n", GetID());
  83   DeferDestroy(TRUE);
  84
  85   while (1) {
  86     TestDestroy();
  87     wxMutexGuiEnter();
  88     m_frame->m_txtctrl->WriteText(text);
  89     wxMutexGuiLeave();
  90     wxSleep(1);
  91   }
  92
  93   return NULL;
  94 }
  95
  96 // ID for the menu commands
  97 #define TEST_QUIT         1
  98 #define TEST_TEXT         101
  99 #define TEST_ABOUT        102
 100 #define TEST_START_THREAD 103
 101 #define TEST_STOP_THREAD  104
 102 #define TEST_PAUSE_THREAD 105
 103
 104 BEGIN_EVENT_TABLE(MyFrame, wxFrame)
 105         EVT_MENU(TEST_QUIT, MyFrame::OnQuit)
 106         EVT_MENU(TEST_ABOUT, MyFrame::OnAbout)
 107         EVT_MENU(TEST_START_THREAD, MyFrame::OnStartThread)
 108         EVT_MENU(TEST_STOP_THREAD, MyFrame::OnStopThread)
 109         EVT_MENU(TEST_PAUSE_THREAD, MyFrame::OnPauseThread)
 110         EVT_SIZE(MyFrame::OnSize)
 111 END_EVENT_TABLE()
 112
 113 // Create a new application object
 114 IMPLEMENT_APP   (MyApp)
 115
 116 // `Main program' equivalent, creating windows and returning main app frame
 117 bool MyApp::OnInit(void)
 118 {
 119   // Create the main frame window
 120   MyFrame *frame = new MyFrame((wxFrame *) NULL, (char *) "Minimal wxWindows App", 50, 50, 450, 340);
 121
 122   // Make a menubar
 123   wxMenu *file_menu = new wxMenu;
 124
 125   file_menu->Append(TEST_ABOUT, "&About");
 126   file_menu->Append(TEST_QUIT, "E&xit");
 127   wxMenuBar *menu_bar = new wxMenuBar;
 128   menu_bar->Append(file_menu, "&File");
 129
 130   wxMenu *thread_menu = new wxMenu;
 131   thread_menu->Append(TEST_START_THREAD, "Start a new thread");
 132   thread_menu->Append(TEST_STOP_THREAD, "Stop a running thread");
 133   thread_menu->Append(TEST_PAUSE_THREAD, "Pause a running thread");
 134   menu_bar->Append(thread_menu, "Thread");
 135   frame->SetMenuBar(menu_bar);
 136
 137   // Make a panel with a message
 138   wxPanel *panel = new wxPanel( frame, -1, wxPoint(0, 0), wxSize(400, 200), wxTAB_TRAVERSAL );
 139
 140   (void)new wxStaticText( panel, -1, "Log window", wxPoint(10,10) );
 141
 142
 143   frame->m_txtctrl = new wxTextCtrl(panel, -1, "", wxPoint(10,30), wxSize(390, 190),
 144                            wxTE_MULTILINE);
 145
 146   // Show the frame
 147   frame->Show(TRUE);
 148
 149   SetTopWindow(frame);
 150
 151   return TRUE;
 152 }
 153
 154 // My frame constructor
 155 MyFrame::MyFrame(wxFrame *frame, char *title, int x, int y, int w, int h):
 156   wxFrame(frame, -1, title, wxPoint(x, y), wxSize(w, h))
 157 {}
 158
 159 void MyFrame::OnStartThread(wxCommandEvent& WXUNUSED(event) )
 160 {
 161   MyThread *thread = new MyThread(this);
 162
 163   thread->Create();
 164
 165   m_threads.Add(thread);
 166 }
 167
 168 void MyFrame::OnStopThread(wxCommandEvent& WXUNUSED(event) )
 169 {
 170   int no_thrd = m_threads.Count()-1;
 171
 172   if (no_thrd < 0)
 173     return;
 174
 175   delete (m_threads[no_thrd]);
 176   m_threads.Remove(no_thrd);
 177 }
 178
 179 void MyFrame::OnPauseThread(wxCommandEvent& WXUNUSED(event) )
 180 {
 181 }
 182
 183 void MyFrame::OnSize(wxSizeEvent& event )
 184 {
 185   wxFrame::OnSize(event);
 186
 187   wxSize size( GetClientSize() );
 188
 189   m_txtctrl->SetSize( 10, 30, size.x-20, size.y-40 );
 190 }
 191
 192 void MyFrame::OnQuit(wxCommandEvent& WXUNUSED(event) )
 193 {
 194   unsigned int i;
 195   for (i=0;i<m_threads.Count();i++)
 196     delete (m_threads[i]);
 197   Close(TRUE);
 198 }
 199
 200 void MyFrame::OnAbout(wxCommandEvent& WXUNUSED(event) )
 201 {
 202   wxMessageDialog dialog(this, "wxThread sample (based on minimal)\nJulian Smart and Guilhem Lavaux",
 203         "About wxThread sample", wxYES_NO|wxCANCEL);
 204
 205   dialog.ShowModal();
 206 }
 207
 208