| 1 | /////////////////////////////////////////////////////////////////////////////// |
| 2 | // Name: gtk/evtloop.cpp |
| 3 | // Purpose: implements wxEventLoop for GTK+ |
| 4 | // Author: Vadim Zeitlin |
| 5 | // Modified by: |
| 6 | // Created: 10.07.01 |
| 7 | // RCS-ID: $Id$ |
| 8 | // Copyright: (c) 2001 Vadim Zeitlin <zeitlin@dptmaths.ens-cachan.fr> |
| 9 | // License: wxWindows licence |
| 10 | /////////////////////////////////////////////////////////////////////////////// |
| 11 | |
| 12 | // ============================================================================ |
| 13 | // declarations |
| 14 | // ============================================================================ |
| 15 | |
| 16 | // ---------------------------------------------------------------------------- |
| 17 | // headers |
| 18 | // ---------------------------------------------------------------------------- |
| 19 | |
| 20 | // For compilers that support precompilation, includes "wx.h". |
| 21 | #include "wx/wxprec.h" |
| 22 | |
| 23 | #ifdef __BORLANDC__ |
| 24 | #pragma hdrstop |
| 25 | #endif |
| 26 | |
| 27 | #include "wx/evtloop.h" |
| 28 | #include "wx/app.h" |
| 29 | |
| 30 | #include <gtk/gtk.h> |
| 31 | |
| 32 | // ---------------------------------------------------------------------------- |
| 33 | // wxEventLoopImpl |
| 34 | // ---------------------------------------------------------------------------- |
| 35 | |
| 36 | class WXDLLEXPORT wxEventLoopImpl |
| 37 | { |
| 38 | public: |
| 39 | // ctor |
| 40 | wxEventLoopImpl() { SetExitCode(0); } |
| 41 | |
| 42 | // set/get the exit code |
| 43 | void SetExitCode(int exitcode) { m_exitcode = exitcode; } |
| 44 | int GetExitCode() const { return m_exitcode; } |
| 45 | |
| 46 | private: |
| 47 | // the exit code of the event loop |
| 48 | int m_exitcode; |
| 49 | }; |
| 50 | |
| 51 | // ============================================================================ |
| 52 | // wxEventLoop implementation |
| 53 | // ============================================================================ |
| 54 | |
| 55 | // ---------------------------------------------------------------------------- |
| 56 | // wxEventLoop running and exiting |
| 57 | // ---------------------------------------------------------------------------- |
| 58 | |
| 59 | wxEventLoop *wxEventLoopBase::ms_activeLoop = NULL; |
| 60 | |
| 61 | wxEventLoop::~wxEventLoop() |
| 62 | { |
| 63 | wxASSERT_MSG( !m_impl, _T("should have been deleted in Run()") ); |
| 64 | } |
| 65 | |
| 66 | int wxEventLoop::Run() |
| 67 | { |
| 68 | // event loops are not recursive, you need to create another loop! |
| 69 | wxCHECK_MSG( !IsRunning(), -1, _T("can't reenter a message loop") ); |
| 70 | |
| 71 | wxEventLoop *oldLoop = ms_activeLoop; |
| 72 | ms_activeLoop = this; |
| 73 | |
| 74 | m_impl = new wxEventLoopImpl; |
| 75 | |
| 76 | gtk_main(); |
| 77 | |
| 78 | int exitcode = m_impl->GetExitCode(); |
| 79 | delete m_impl; |
| 80 | m_impl = NULL; |
| 81 | |
| 82 | ms_activeLoop = oldLoop; |
| 83 | |
| 84 | return exitcode; |
| 85 | } |
| 86 | |
| 87 | void wxEventLoop::Exit(int rc) |
| 88 | { |
| 89 | wxCHECK_RET( IsRunning(), _T("can't call Exit() if not running") ); |
| 90 | |
| 91 | m_impl->SetExitCode(rc); |
| 92 | |
| 93 | gtk_main_quit(); |
| 94 | } |
| 95 | |
| 96 | // ---------------------------------------------------------------------------- |
| 97 | // wxEventLoop message processing dispatching |
| 98 | // ---------------------------------------------------------------------------- |
| 99 | |
| 100 | bool wxEventLoop::Pending() const |
| 101 | { |
| 102 | if (wxTheApp) |
| 103 | { |
| 104 | // We need to remove idle callbacks or gtk_events_pending will |
| 105 | // never return false. |
| 106 | wxTheApp->RemoveIdleTag(); |
| 107 | } |
| 108 | |
| 109 | return gtk_events_pending(); |
| 110 | } |
| 111 | |
| 112 | bool wxEventLoop::Dispatch() |
| 113 | { |
| 114 | wxCHECK_MSG( IsRunning(), FALSE, _T("can't call Dispatch() if not running") ); |
| 115 | |
| 116 | gtk_main_iteration(); |
| 117 | |
| 118 | return TRUE; |
| 119 | } |
| 120 | |