Support using GetTextExtent() with empty string to get descent in wxOSX.

[wxWidgets.git] / samples / ipc / server.cpp

diff --git a/samples/ipc/server.cpp b/samples/ipc/server.cpp
index 3db49585e08e576de4f9e38fdfdc28cd972398cb..47b2d62ee6d15680cc576b207af09e84d74269ef 100644 (file)
--- a/samples/ipc/server.cpp
+++ b/samples/ipc/server.cpp
@@ -2,7 +2,7 @@
 // Name:        server.cpp
 // Purpose:     IPC sample: server
 // Author:      Julian Smart
 // Name:        server.cpp
 // Purpose:     IPC sample: server
 // Author:      Julian Smart

-// Modified by:
+// Modified by: Jurgen Doornik

 // Created:     25/01/99
 // RCS-ID:      $Id$
 // Copyright:   (c) Julian Smart
 // Created:     25/01/99
 // RCS-ID:      $Id$
 // Copyright:   (c) Julian Smart


@@ -30,13 +30,15 @@
 
 // Settings common to both executables: determines whether
 // we're using TCP/IP or real DDE.
 
 // Settings common to both executables: determines whether
 // we're using TCP/IP or real DDE.

-#include "ddesetup.h"
+#include "ipcsetup.h"

 
 

-#if defined(__WXGTK__) || defined(__WXX11__) || defined(__WXMOTIF__) || defined(__WXMAC__)
-    #include "mondrian.xpm"
+#ifndef wxHAS_IMAGES_IN_RESOURCES
+    #include "../sample.xpm"

 #endif
 
 #include "server.h"
 #endif
 
 #include "server.h"

+#include "wx/textdlg.h"
+#include "wx/datetime.h"

 
 // ----------------------------------------------------------------------------
 // wxWin macros
 
 // ----------------------------------------------------------------------------
 // wxWin macros


@@ -45,20 +47,14 @@
 IMPLEMENT_APP(MyApp)
 
 BEGIN_EVENT_TABLE(MyFrame, wxFrame)
 IMPLEMENT_APP(MyApp)
 
 BEGIN_EVENT_TABLE(MyFrame, wxFrame)

-    EVT_MENU   (SERVER_EXIT, MyFrame::OnExit)
-    EVT_LISTBOX(SERVER_LISTBOX, MyFrame::OnListBoxClick)
-END_EVENT_TABLE()
+    EVT_CLOSE( MyFrame::OnClose )

 
 

-BEGIN_EVENT_TABLE(IPCDialogBox, wxDialog)
-    EVT_BUTTON(SERVER_QUIT_BUTTON, IPCDialogBox::OnQuit)
+    EVT_BUTTON( ID_START,          MyFrame::OnStart )
+    EVT_CHOICE( ID_SERVERNAME,     MyFrame::OnServerName )
+    EVT_BUTTON( ID_DISCONNECT,     MyFrame::OnDisconnect )
+    EVT_BUTTON( ID_ADVISE,         MyFrame::OnAdvise )

 END_EVENT_TABLE()
 
 END_EVENT_TABLE()
 

-// ----------------------------------------------------------------------------
-// global variables
-// ----------------------------------------------------------------------------
-
-char ipc_buffer[4000];
-MyConnection *the_connection = NULL;

 
 // ============================================================================
 // implementation
 
 // ============================================================================
 // implementation


@@ -70,27 +66,14 @@ MyConnection *the_connection = NULL;
 
 bool MyApp::OnInit()
 {
 
 bool MyApp::OnInit()
 {

-    // Create the main frame window
-    (new MyFrame(NULL, "Server"))->Show(TRUE);
-
-    // service name (DDE classes) or port number (TCP/IP based classes)
-    wxString service = "4242";
-
-    if (argc > 1)
-        service = argv[1];
-
-    // Create a new server
-    m_server = new MyServer;
-    m_server->Create(service);
-
-    return TRUE;
-}
+    if ( !wxApp::OnInit() )
+        return false;

 
 

-int MyApp::OnExit()
-{
-    delete m_server;
+    // Create the main frame window
+    m_frame = new MyFrame(NULL, "Server");
+    m_frame->Show(true);

 
 

-    return 0;
+    return true;

 }
 
 // ----------------------------------------------------------------------------
 }
 
 // ----------------------------------------------------------------------------


@@ -99,144 +82,310 @@ int MyApp::OnExit()
 
 // Define my frame constructor
 MyFrame::MyFrame(wxFrame *frame, const wxString& title)
 
 // Define my frame constructor
 MyFrame::MyFrame(wxFrame *frame, const wxString& title)

-       : wxFrame(frame, -1, title)
+       : wxFrame(frame, wxID_ANY, title, wxDefaultPosition, wxSize(400, 300))

 {
 {

-    panel = NULL;
-
+#if wxUSE_STATUSBAR

     CreateStatusBar();
     CreateStatusBar();

+#endif // wxUSE_STATUSBAR
+
+    SetIcon(wxICON(sample));
+
+    m_server = NULL;
+
+    wxPanel * const panel = new wxPanel(this);
+
+    wxBoxSizer * const sizerMain = new wxBoxSizer( wxVERTICAL );
+
+    wxFlexGridSizer * const sizerCmds = new wxFlexGridSizer( 2, 0, 0 );
+    sizerCmds->AddGrowableCol( 1 );
+
+    wxButton *btn;
+
+    btn = new wxButton(panel, ID_START, "&Start Server");
+    sizerCmds->Add(btn, 0, wxGROW|wxALIGN_CENTER_VERTICAL|wxALL, 5);

 
 

-    // Give it an icon
-    SetIcon(wxICON(mondrian));
+    const wxString choices[] = { IPC_SERVICE, "..." };
+    wxChoice * const choice = new wxChoice
+                                  (
+                                    panel,
+                                    ID_SERVERNAME,
+                                    wxDefaultPosition, wxSize(100, -1),
+                                    WXSIZEOF(choices), choices
+                                  );
+    sizerCmds->Add(choice, 0, wxGROW|wxALIGN_CENTER_VERTICAL|wxALL, 5);

 
 

-    // Make a menubar
-    wxMenu *file_menu = new wxMenu;
+    btn = new wxButton(panel, ID_DISCONNECT, "&Disconnect Client");
+    sizerCmds->Add(btn, 0, wxGROW|wxALIGN_CENTER_VERTICAL|wxALL, 5);
+    sizerCmds->AddSpacer(20);

 
 

-    file_menu->Append(SERVER_EXIT, "&Exit");
+    btn = new wxButton( panel, ID_ADVISE, "&Advise");
+    sizerCmds->Add(btn, 0, wxGROW|wxALIGN_CENTER_VERTICAL|wxALL, 5);
+    sizerCmds->AddSpacer(20);

 
 

-    wxMenuBar *menu_bar = new wxMenuBar;
+    sizerMain->Add(sizerCmds, 0, wxGROW|wxALIGN_CENTER_VERTICAL|wxALL, 5);

 
 

-    menu_bar->Append(file_menu, "&File");
+    wxStaticBoxSizer * const
+        sizerLog = new wxStaticBoxSizer(wxVERTICAL, panel, "Server &log");

 
 

-    // Associate the menu bar with the frame
-    SetMenuBar(menu_bar);
+    wxTextCtrl * const textLog = new wxTextCtrl
+                                 (
+                                    panel,
+                                    wxID_ANY,
+                                    "",
+                                    wxDefaultPosition, wxSize(500, 140),
+                                    wxTE_MULTILINE
+                                 );
+    sizerLog->Add(textLog, 1, wxGROW|wxALIGN_CENTER_VERTICAL|wxALL, 5);

 
 

-    // Make a panel
-    panel = new wxPanel(this);
-    wxListBox *list = new wxListBox(panel, SERVER_LISTBOX, wxPoint(5, 5));
-    list->Append("Apple");
-    list->Append("Pear");
-    list->Append("Orange");
-    list->Append("Banana");
-    list->Append("Fruit");
+    sizerMain->Add(sizerLog, 1, wxGROW|wxALIGN_CENTER_VERTICAL|wxALL, 5);

 
 

-    panel->Fit();
-    Fit();
+    panel->SetSizer(sizerMain);
+    sizerMain->SetSizeHints(panel);
+    SetClientSize(panel->GetSize());
+
+    GetServername()->SetSelection(0);
+    wxLogTextCtrl *logWindow = new wxLogTextCtrl(textLog);
+    delete wxLog::SetActiveTarget(logWindow);
+    wxLogMessage("Click on Start to start the server");
+    UpdateUI();
+}
+
+void MyFrame::UpdateUI()
+{
+    GetStart()->Enable(m_server == NULL);
+    GetServername()->Enable(m_server == NULL);
+    GetAdvise()->Enable(m_server && m_server->CanAdvise());
+    GetDisconnect()->Enable(m_server && m_server->IsConnected());

 }
 
 }
 

-// Set the client process's listbox to this item
-void MyFrame::OnListBoxClick(wxCommandEvent& WXUNUSED(event))
+void MyFrame::OnClose(wxCloseEvent& event)

 {
 {

-    wxListBox* listBox = (wxListBox*) panel->FindWindow(SERVER_LISTBOX);
-    if (listBox)
+    wxDELETE(m_server);
+    event.Skip();
+}
+
+void MyFrame::OnStart(wxCommandEvent& WXUNUSED(event))
+{
+    // Create a new server
+    m_server = new MyServer;
+    wxString servername = GetServername()->GetStringSelection();
+    if (m_server->Create(servername))

     {
     {

-        wxString value = listBox->GetStringSelection();
-        if (the_connection)
+        wxLogMessage("Server %s started", servername);
+  #if wxUSE_DDE_FOR_IPC
+        wxLogMessage("Server uses DDE");
+  #else // !wxUSE_DDE_FOR_IPC
+        wxLogMessage("Server uses TCP");
+  #endif // wxUSE_DDE_FOR_IPC/!wxUSE_DDE_FOR_IPC
+    }
+    else
+    {
+        wxLogMessage("Server %s failed to start", servername);
+        wxDELETE(m_server);
+    }
+    UpdateUI();
+}
+
+void MyFrame::OnServerName( wxCommandEvent& WXUNUSED(event) )
+{
+    if ( GetServername()->GetStringSelection() == "..." )
+    {
+        wxString s = wxGetTextFromUser
+                     (
+                        "Specify the name of the server",
+                        "Server Name",
+                        "",
+                        this
+                     );
+
+        if ( !s.empty() && s != IPC_SERVICE )

         {
         {

-            the_connection->Advise("Item", (wxChar *)value.c_str());
+            GetServername()->Insert(s, 0);
+            GetServername()->SetSelection(0);

         }
     }
 }
 
         }
     }
 }
 

-void MyFrame::OnExit(wxCommandEvent& WXUNUSED(event))
+void MyFrame::Disconnect()

 {
 {

-    Close(TRUE);
+    m_server->Disconnect();
+    UpdateUI();

 }
 
 }
 

-// ----------------------------------------------------------------------------
-// IPCDialogBox
-// ----------------------------------------------------------------------------
-
-IPCDialogBox::IPCDialogBox(wxWindow *parent, const wxString& title,
-                           const wxPoint& pos, const wxSize& size,
-                           MyConnection *connection)
-            : wxDialog(parent, -1, title, pos, size)
+void MyFrame::OnDisconnect(wxCommandEvent& WXUNUSED(event))

 {
 {

-    m_connection = connection;
-    (void)new wxButton(this, SERVER_QUIT_BUTTON, "Quit this connection",
-                       wxPoint(5, 5));
-    Fit();
+    Disconnect();

 }
 
 }
 

-void IPCDialogBox::OnQuit(wxCommandEvent& event)
+void MyFrame::OnAdvise(wxCommandEvent& WXUNUSED(event))

 {
 {

-    m_connection->Disconnect();
-    delete m_connection;
+    m_server->Advise();

 }
 
 // ----------------------------------------------------------------------------
 // MyServer
 // ----------------------------------------------------------------------------
 
 }
 
 // ----------------------------------------------------------------------------
 // MyServer
 // ----------------------------------------------------------------------------
 

+MyServer::MyServer() : wxServer()
+{
+    m_connection = NULL;
+}
+
+MyServer::~MyServer()
+{
+    Disconnect();
+}
+

 wxConnectionBase *MyServer::OnAcceptConnection(const wxString& topic)
 {
 wxConnectionBase *MyServer::OnAcceptConnection(const wxString& topic)
 {

-    if (strcmp(topic, "STDIO") != 0 && strcmp(topic, "IPC TEST") == 0)
-        return new MyConnection(ipc_buffer, WXSIZEOF(ipc_buffer));
-    else
-        return NULL;
+    wxLogMessage("OnAcceptConnection(\"%s\")", topic);
+
+    if ( topic == IPC_TOPIC )
+    {
+        m_connection = new MyConnection();
+        wxGetApp().GetFrame()->UpdateUI();
+        wxLogMessage("Connection accepted");
+        return m_connection;
+    }
+    //else: unknown topic
+
+    wxLogMessage("Unknown topic, connection refused");
+    return NULL;
+}
+
+void MyServer::Disconnect()
+{
+    if ( m_connection )
+    {
+        wxDELETE(m_connection);
+        wxGetApp().GetFrame()->UpdateUI();
+        wxLogMessage("Disconnected client");
+    }
+}
+
+void MyServer::Advise()
+{
+    if ( CanAdvise() )
+    {
+        const wxDateTime now = wxDateTime::Now();
+
+        m_connection->Advise(m_connection->m_advise, now.Format());
+
+        const wxString s = now.FormatTime() + " " + now.FormatDate();
+        m_connection->Advise(m_connection->m_advise, s.mb_str(), wxNO_LEN);
+
+#if wxUSE_DDE_FOR_IPC
+        wxLogMessage("DDE Advise type argument cannot be wxIPC_PRIVATE. "
+                     "The client will receive it as wxIPC_TEXT, "
+                     " and receive the correct no of bytes, "
+                     "but not print a correct log entry.");
+#endif
+        char bytes[3] = { '1', '2', '3' };
+        m_connection->Advise(m_connection->m_advise, bytes, 3, wxIPC_PRIVATE);
+    }

 }
 
 // ----------------------------------------------------------------------------
 // MyConnection
 // ----------------------------------------------------------------------------
 
 }
 
 // ----------------------------------------------------------------------------
 // MyConnection
 // ----------------------------------------------------------------------------
 

-MyConnection::MyConnection(char *buf, int size)
-            : wxConnection(buf, size)
+bool
+MyConnection::OnExecute(const wxString& topic,
+                        const void *data,
+                        size_t size,
+                        wxIPCFormat format)

 {
 {

-    dialog = new IPCDialogBox(wxTheApp->GetTopWindow(), "Connection",
-                              wxPoint(100, 100), wxSize(500, 500), this);
-    dialog->Show(TRUE);
-    the_connection = this;
+    Log("OnExecute", topic, "", data, size, format);
+    return true;

 }
 
 }
 

-MyConnection::~MyConnection()
+bool
+MyConnection::OnPoke(const wxString& topic,
+                     const wxString& item,
+                     const void *data,
+                     size_t size,
+                     wxIPCFormat format)

 {
 {

-    if (the_connection)
+    Log("OnPoke", topic, item, data, size, format);
+    return wxConnection::OnPoke(topic, item, data, size, format);
+}
+
+const void *
+MyConnection::OnRequest(const wxString& topic,
+                        const wxString& item,
+                        size_t *size,
+                        wxIPCFormat format)
+{
+    *size = 0;
+
+    wxString s,
+             afterDate;
+    if ( item.StartsWith("Date", &afterDate) )

     {
     {

-        dialog->Destroy();
-        the_connection = NULL;
+        const wxDateTime now = wxDateTime::Now();
+
+        if ( afterDate.empty() )
+        {
+            s = now.Format();
+            *size = wxNO_LEN;
+        }
+        else if ( afterDate == "+len" )
+        {
+            s = now.FormatTime() + " " + now.FormatDate();
+            *size = strlen(s.mb_str()) + 1;
+        }
+    }
+    else if ( item == "bytes[3]" )
+    {
+        s = "123";
+        *size = 3;
+    }
+
+    if ( !*size )
+    {
+        wxLogMessage("Unknown request for \"%s\"", item);
+        return NULL;

     }
     }

+
+    // store the data pointer to which we return in a member variable to ensure
+    // that the pointer remains valid even after we return
+    m_requestData = s.mb_str();
+    const void * const data = m_requestData;
+    Log("OnRequest", topic, item, data, *size, format);
+    return data;

 }
 
 }
 

-bool MyConnection::OnExecute(const wxString& WXUNUSED(topic),
-                             char *data,
-                             int WXUNUSED(size),
-                             wxIPCFormat WXUNUSED(format))
+bool MyConnection::OnStartAdvise(const wxString& topic, const wxString& item)

 {
 {

-    wxLogStatus("Execute command: %s", data);
-    return TRUE;
+    wxLogMessage("OnStartAdvise(\"%s\", \"%s\")", topic, item);
+    wxLogMessage("Returning true");
+    m_advise = item;
+    wxGetApp().GetFrame()->UpdateUI();
+    return true;

 }
 
 }
 

-bool MyConnection::OnPoke(const wxString& WXUNUSED(topic),
-                          const wxString& item,
-                          char *data,
-                          int WXUNUSED(size),
-                          wxIPCFormat WXUNUSED(format))
+bool MyConnection::OnStopAdvise(const wxString& topic, const wxString& item)

 {
 {

-    wxLogStatus("Poke command: %s = %s", item.c_str(), data);
-    return TRUE;
+    wxLogMessage("OnStopAdvise(\"%s\",\"%s\")", topic, item);
+    wxLogMessage("Returning true");
+    m_advise.clear();
+    wxGetApp().GetFrame()->UpdateUI();
+    return true;

 }
 
 }
 

-char *MyConnection::OnRequest(const wxString& WXUNUSED(topic),
-                              const wxString& WXUNUSED(item),
-                              int * WXUNUSED(size),
-                              wxIPCFormat WXUNUSED(format))
+bool
+MyConnection::DoAdvise(const wxString& item,
+                       const void *data,
+                       size_t size,
+                       wxIPCFormat format)

 {
 {

-    return "Here, have your data, client!";
+    Log("Advise", "", item, data, size, format);
+    return wxConnection::DoAdvise(item, data, size, format);

 }
 
 }
 

-bool MyConnection::OnStartAdvise(const wxString& WXUNUSED(topic),
-                                 const wxString& WXUNUSED(item))
+bool MyConnection::OnDisconnect()

 {
 {

-    return TRUE;
+    wxLogMessage("OnDisconnect()");
+    wxGetApp().GetFrame()->Disconnect();
+    return true;

 }
 }

-