d254213eb2
git-svn-id: https://svn.wxwidgets.org/svn/wx/wxWidgets/trunk@50757 c3d73ce0-8a6f-49c7-b76d-6d57e0e08775
593 lines
16 KiB
C++
593 lines
16 KiB
C++
/////////////////////////////////////////////////////////////////////////////
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// Name: src/gtk/app.cpp
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// Purpose:
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// Author: Robert Roebling
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// Id: $Id$
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// Copyright: (c) 1998 Robert Roebling, Julian Smart
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// Licence: wxWindows licence
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/////////////////////////////////////////////////////////////////////////////
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// For compilers that support precompilation, includes "wx.h".
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#include "wx/wxprec.h"
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#include "wx/app.h"
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#ifndef WX_PRECOMP
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#include "wx/intl.h"
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#include "wx/log.h"
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#include "wx/utils.h"
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#include "wx/memory.h"
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#include "wx/font.h"
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#endif
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#include "wx/thread.h"
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#ifdef __WXGPE__
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#include <gpe/init.h>
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#endif
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#include "wx/gtk/private.h"
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#include "wx/apptrait.h"
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#if wxUSE_LIBHILDON
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#include <hildon-widgets/hildon-program.h>
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#endif // wxUSE_LIBHILDON
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#include <gdk/gdkx.h>
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//-----------------------------------------------------------------------------
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// link GnomeVFS
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//-----------------------------------------------------------------------------
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#if wxUSE_MIMETYPE && wxUSE_LIBGNOMEVFS
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#include "wx/link.h"
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wxFORCE_LINK_MODULE(gnome_vfs)
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#endif
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//-----------------------------------------------------------------------------
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// global data
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//-----------------------------------------------------------------------------
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bool g_mainThreadLocked = false;
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static GtkWidget *gs_RootWindow = (GtkWidget*) NULL;
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//-----------------------------------------------------------------------------
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// wxYield
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//-----------------------------------------------------------------------------
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// not static because used by textctrl.cpp
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//
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// MT-FIXME
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bool wxIsInsideYield = false;
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bool wxApp::Yield(bool onlyIfNeeded)
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{
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if ( wxIsInsideYield )
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{
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if ( !onlyIfNeeded )
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{
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wxFAIL_MSG( wxT("wxYield called recursively" ) );
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}
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return false;
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}
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#if wxUSE_THREADS
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if ( !wxThread::IsMain() )
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{
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// can't call gtk_main_iteration() from other threads like this
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return true;
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}
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#endif // wxUSE_THREADS
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wxIsInsideYield = true;
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#if wxUSE_LOG
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// disable log flushing from here because a call to wxYield() shouldn't
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// normally result in message boxes popping up &c
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wxLog::Suspend();
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#endif
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while (EventsPending())
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gtk_main_iteration();
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// It's necessary to call ProcessIdle() to update the frames sizes which
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// might have been changed (it also will update other things set from
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// OnUpdateUI() which is a nice (and desired) side effect). But we
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// call ProcessIdle() only once since this is not meant for longish
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// background jobs (controlled by wxIdleEvent::RequestMore() and the
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// return value of Processidle().
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ProcessIdle();
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#if wxUSE_LOG
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// let the logs be flashed again
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wxLog::Resume();
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#endif
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wxIsInsideYield = false;
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return true;
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}
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//-----------------------------------------------------------------------------
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// local functions
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//-----------------------------------------------------------------------------
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// One-shot signal emission hook, to install idle handler.
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extern "C" {
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static gboolean
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wx_emission_hook(GSignalInvocationHint*, guint, const GValue*, gpointer data)
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{
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wxApp* app = wxTheApp;
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if (app != NULL)
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app->WakeUpIdle();
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gulong* hook_id = (gulong*)data;
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// record that hook is not installed
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*hook_id = 0;
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// remove hook
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return false;
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}
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}
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// Add signal emission hooks, to re-install idle handler when needed.
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static void wx_add_idle_hooks()
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{
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// "event" hook
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{
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static gulong hook_id = 0;
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if (hook_id == 0)
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{
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static guint sig_id = 0;
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if (sig_id == 0)
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sig_id = g_signal_lookup("event", GTK_TYPE_WIDGET);
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hook_id = g_signal_add_emission_hook(
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sig_id, 0, wx_emission_hook, &hook_id, NULL);
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}
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}
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// "size_allocate" hook
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// Needed to match the behavior of the old idle system,
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// but probably not necessary.
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{
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static gulong hook_id = 0;
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if (hook_id == 0)
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{
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static guint sig_id = 0;
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if (sig_id == 0)
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sig_id = g_signal_lookup("size_allocate", GTK_TYPE_WIDGET);
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hook_id = g_signal_add_emission_hook(
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sig_id, 0, wx_emission_hook, &hook_id, NULL);
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}
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}
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}
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extern "C" {
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static gboolean wxapp_idle_callback(gpointer)
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{
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return wxTheApp->DoIdle();
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}
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}
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bool wxApp::DoIdle()
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{
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guint id_save;
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{
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// Allow another idle source to be added while this one is busy.
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// Needed if an idle event handler runs a new event loop,
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// for example by showing a dialog.
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#if wxUSE_THREADS
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wxMutexLocker lock(*m_idleMutex);
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#endif
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id_save = m_idleSourceId;
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m_idleSourceId = 0;
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wx_add_idle_hooks();
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#ifdef __WXDEBUG__
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// don't generate the idle events while the assert modal dialog is shown,
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// this matches the behavior of wxMSW
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if (m_isInAssert)
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return false;
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#endif
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}
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gdk_threads_enter();
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bool needMore;
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do {
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needMore = ProcessIdle();
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} while (needMore && gtk_events_pending() == 0);
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gdk_threads_leave();
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#if wxUSE_THREADS
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wxMutexLocker lock(*m_idleMutex);
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#endif
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// if a new idle source was added during ProcessIdle
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if (m_idleSourceId != 0)
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{
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// remove it
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g_source_remove(m_idleSourceId);
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m_idleSourceId = 0;
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}
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// if more idle processing requested
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if (needMore)
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{
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// keep this source installed
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m_idleSourceId = id_save;
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return true;
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}
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// add hooks and remove this source
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wx_add_idle_hooks();
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return false;
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}
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#if wxUSE_THREADS
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static GPollFunc wxgs_poll_func;
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extern "C" {
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static gint wxapp_poll_func( GPollFD *ufds, guint nfds, gint timeout )
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{
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g_mainThreadLocked = true;
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gint res = (*wxgs_poll_func)(ufds, nfds, timeout);
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g_mainThreadLocked = false;
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return res;
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}
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}
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#endif // wxUSE_THREADS
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//-----------------------------------------------------------------------------
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// Access to the root window global
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//-----------------------------------------------------------------------------
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GtkWidget* wxGetRootWindow()
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{
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if (gs_RootWindow == NULL)
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{
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gs_RootWindow = gtk_window_new( GTK_WINDOW_TOPLEVEL );
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gtk_widget_realize( gs_RootWindow );
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}
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return gs_RootWindow;
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}
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//-----------------------------------------------------------------------------
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// wxApp
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//-----------------------------------------------------------------------------
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IMPLEMENT_DYNAMIC_CLASS(wxApp,wxEvtHandler)
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wxApp::wxApp()
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{
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#ifdef __WXDEBUG__
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m_isInAssert = false;
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#endif // __WXDEBUG__
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#if wxUSE_THREADS
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m_idleMutex = NULL;
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#endif
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m_idleSourceId = 0;
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}
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wxApp::~wxApp()
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{
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}
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bool wxApp::OnInitGui()
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{
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if ( !wxAppBase::OnInitGui() )
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return false;
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// if this is a wxGLApp (derived from wxApp), and we've already
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// chosen a specific visual, then derive the GdkVisual from that
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if ( GetXVisualInfo() )
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{
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GdkVisual* vis = gtk_widget_get_default_visual();
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GdkColormap *colormap = gdk_colormap_new( vis, FALSE );
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gtk_widget_set_default_colormap( colormap );
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}
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else
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{
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// On some machines, the default visual is just 256 colours, so
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// we make sure we get the best. This can sometimes be wasteful.
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if (m_useBestVisual)
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{
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if (m_forceTrueColour)
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{
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GdkVisual* visual = gdk_visual_get_best_with_both( 24, GDK_VISUAL_TRUE_COLOR );
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if (!visual)
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{
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wxLogError(wxT("Unable to initialize TrueColor visual."));
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return false;
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}
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GdkColormap *colormap = gdk_colormap_new( visual, FALSE );
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gtk_widget_set_default_colormap( colormap );
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}
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else
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{
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if (gdk_visual_get_best() != gdk_visual_get_system())
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{
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GdkVisual* visual = gdk_visual_get_best();
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GdkColormap *colormap = gdk_colormap_new( visual, FALSE );
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gtk_widget_set_default_colormap( colormap );
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}
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}
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}
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}
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#if wxUSE_LIBHILDON
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m_hildonProgram = hildon_program_get_instance();
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if ( !m_hildonProgram )
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{
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wxLogError(_("Unable to initialize Hildon program"));
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return false;
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}
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#endif // wxUSE_LIBHILDON
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return true;
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}
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GdkVisual *wxApp::GetGdkVisual()
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{
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GdkVisual *visual = NULL;
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XVisualInfo *xvi = (XVisualInfo *)GetXVisualInfo();
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if ( xvi )
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visual = gdkx_visual_get( xvi->visualid );
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else
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visual = gdk_drawable_get_visual( wxGetRootWindow()->window );
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wxASSERT( visual );
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return visual;
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}
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// use unusual names for the parameters to avoid conflict with wxApp::arg[cv]
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bool wxApp::Initialize(int& argc_, wxChar **argv_)
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{
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if ( !wxAppBase::Initialize(argc_, argv_) )
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return false;
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#if wxUSE_THREADS
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if (!g_thread_supported())
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{
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g_thread_init(NULL);
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gdk_threads_init();
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}
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wxgs_poll_func = g_main_context_get_poll_func(NULL);
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g_main_context_set_poll_func(NULL, wxapp_poll_func);
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#endif // wxUSE_THREADS
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// We should have the wxUSE_WCHAR_T test on the _outside_
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#if wxUSE_WCHAR_T
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// gtk+ 2.0 supports Unicode through UTF-8 strings
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wxConvCurrent = &wxConvUTF8;
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#else // !wxUSE_WCHAR_T
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if (!wxOKlibc())
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wxConvCurrent = (wxMBConv*) NULL;
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#endif // wxUSE_WCHAR_T/!wxUSE_WCHAR_T
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// decide which conversion to use for the file names
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// (1) this variable exists for the sole purpose of specifying the encoding
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// of the filenames for GTK+ programs, so use it if it is set
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wxString encName(wxGetenv(_T("G_FILENAME_ENCODING")));
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encName = encName.BeforeFirst(_T(','));
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if (encName.CmpNoCase(_T("@locale")) == 0)
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encName.clear();
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encName.MakeUpper();
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#if wxUSE_INTL
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if (encName.empty())
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{
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// (2) if a non default locale is set, assume that the user wants his
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// filenames in this locale too
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encName = wxLocale::GetSystemEncodingName().Upper();
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// (3) finally use UTF-8 by default
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if (encName.empty() || encName == _T("US-ASCII"))
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encName = _T("UTF-8");
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wxSetEnv(_T("G_FILENAME_ENCODING"), encName);
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}
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#else
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if (encName.empty())
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encName = _T("UTF-8");
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// if wxUSE_INTL==0 it probably indicates that only "C" locale is supported
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// by the program anyhow so prevent GTK+ from calling setlocale(LC_ALL, "")
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// from gtk_init_check() as it does by default
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gtk_disable_setlocale();
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#endif // wxUSE_INTL
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static wxConvBrokenFileNames fileconv(encName);
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wxConvFileName = &fileconv;
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bool init_result;
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int i;
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#if wxUSE_UNICODE
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// gtk_init() wants UTF-8, not wchar_t, so convert
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char **argvGTK = new char *[argc_ + 1];
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for ( i = 0; i < argc_; i++ )
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{
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argvGTK[i] = wxStrdupA(wxConvUTF8.cWX2MB(argv_[i]));
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}
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argvGTK[argc_] = NULL;
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int argcGTK = argc_;
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#ifdef __WXGPE__
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init_result = true; // is there a _check() version of this?
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gpe_application_init( &argcGTK, &argvGTK );
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#else
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init_result = gtk_init_check( &argcGTK, &argvGTK );
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#endif
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wxUpdateLocaleIsUtf8();
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if ( argcGTK != argc_ )
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{
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// we have to drop the parameters which were consumed by GTK+
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for ( i = 0; i < argcGTK; i++ )
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{
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while ( strcmp(wxConvUTF8.cWX2MB(argv_[i]), argvGTK[i]) != 0 )
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{
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memmove(argv_ + i, argv_ + i + 1, (argc_ - i)*sizeof(*argv_));
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}
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}
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argc_ = argcGTK;
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}
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//else: gtk_init() didn't modify our parameters
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// free our copy
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for ( i = 0; i < argcGTK; i++ )
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{
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free(argvGTK[i]);
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}
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delete [] argvGTK;
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#else // !wxUSE_UNICODE
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// gtk_init() shouldn't actually change argv_ itself (just its contents) so
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// it's ok to pass pointer to it
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init_result = gtk_init_check( &argc_, &argv_ );
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#endif // wxUSE_UNICODE/!wxUSE_UNICODE
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// update internal arg[cv] as GTK+ may have removed processed options:
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this->argc = argc_;
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this->argv = argv_;
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if ( m_traits )
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{
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// if there are still GTK+ standard options unparsed in the command
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// line, it means that they were not syntactically correct and GTK+
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// already printed a warning on the command line and we should now
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// exit:
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wxArrayString opt, desc;
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m_traits->GetStandardCmdLineOptions(opt, desc);
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for ( i = 0; i < argc_; i++ )
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{
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// leave just the names of the options with values
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const wxString str = wxString(argv_[i]).BeforeFirst('=');
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for ( size_t j = 0; j < opt.size(); j++ )
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{
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// remove the leading spaces from the option string as it does
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// have them
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if ( opt[j].Trim(false).BeforeFirst('=') == str )
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{
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// a GTK+ option can be left on the command line only if
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// there was an error in (or before, in another standard
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// options) it, so abort, just as we do if incorrect
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// program option is given
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wxLogError(_("Invalid GTK+ command line option, use \"%s --help\""),
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argv_[0]);
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return false;
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}
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}
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}
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}
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if ( !init_result )
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{
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wxLogError(_("Unable to initialize GTK+, is DISPLAY set properly?"));
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return false;
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}
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// we can not enter threads before gtk_init is done
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gdk_threads_enter();
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wxSetDetectableAutoRepeat( true );
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#if wxUSE_INTL
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wxFont::SetDefaultEncoding(wxLocale::GetSystemEncoding());
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#endif
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#if wxUSE_THREADS
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m_idleMutex = new wxMutex;
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#endif
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// make sure GtkWidget type is loaded, idle hooks need it
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g_type_class_ref(GTK_TYPE_WIDGET);
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WakeUpIdle();
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return true;
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}
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void wxApp::CleanUp()
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{
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if (m_idleSourceId != 0)
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g_source_remove(m_idleSourceId);
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// release reference acquired by Initialize()
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g_type_class_unref(g_type_class_peek(GTK_TYPE_WIDGET));
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gdk_threads_leave();
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wxAppBase::CleanUp();
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// delete this mutex as late as possible as it's used from WakeUpIdle(), in
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// particular do it after calling the base class CleanUp() which can result
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// in it being called
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#if wxUSE_THREADS
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delete m_idleMutex;
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m_idleMutex = NULL;
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#endif
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}
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void wxApp::WakeUpIdle()
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{
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#if wxUSE_THREADS
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wxMutexLocker lock(*m_idleMutex);
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#endif
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if (m_idleSourceId == 0)
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m_idleSourceId = g_idle_add_full(G_PRIORITY_LOW, wxapp_idle_callback, NULL, NULL);
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}
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// Checking for pending events requires first removing our idle source,
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// otherwise it will cause the check to always return true.
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bool wxApp::EventsPending()
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{
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#if wxUSE_THREADS
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wxMutexLocker lock(*m_idleMutex);
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#endif
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if (m_idleSourceId != 0)
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{
|
|
g_source_remove(m_idleSourceId);
|
|
m_idleSourceId = 0;
|
|
wx_add_idle_hooks();
|
|
}
|
|
return gtk_events_pending() != 0;
|
|
}
|
|
|
|
#ifdef __WXDEBUG__
|
|
|
|
void wxApp::OnAssertFailure(const wxChar *file,
|
|
int line,
|
|
const wxChar* func,
|
|
const wxChar* cond,
|
|
const wxChar *msg)
|
|
{
|
|
|
|
// block wx idle events while assert dialog is showing
|
|
m_isInAssert = true;
|
|
|
|
wxAppBase::OnAssertFailure(file, line, func, cond, msg);
|
|
|
|
m_isInAssert = false;
|
|
}
|
|
|
|
#endif // __WXDEBUG__
|
|
|
|
#if wxUSE_THREADS
|
|
void wxGUIAppTraits::MutexGuiEnter()
|
|
{
|
|
gdk_threads_enter();
|
|
}
|
|
|
|
void wxGUIAppTraits::MutexGuiLeave()
|
|
{
|
|
gdk_threads_leave();
|
|
}
|
|
#endif // wxUSE_THREADS
|