558 lines
15 KiB
C++
558 lines
15 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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// 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/apptrait.h"
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#include "wx/fontmap.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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#if wxUSE_LIBHILDON2
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#include <hildon/hildon.h>
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#endif // wxUSE_LIBHILDON2
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#include <gtk/gtk.h>
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#include "wx/gtk/private.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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// 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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bool* hook_installed = (bool*)data;
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// record that hook is not installed
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*hook_installed = false;
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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 bool hook_installed;
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if (!hook_installed)
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{
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static guint sig_id;
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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_installed = true;
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g_signal_add_emission_hook(
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sig_id, 0, wx_emission_hook, &hook_installed, NULL);
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}
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}
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// "size_allocate" hook
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// Needed to match the behaviour of the old idle system,
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// but probably not necessary.
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{
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static bool hook_installed;
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if (!hook_installed)
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{
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static guint sig_id;
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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_installed = true;
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g_signal_add_emission_hook(
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sig_id, 0, wx_emission_hook, &hook_installed, 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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#if wxDEBUG_LEVEL
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// don't generate the idle events while the assert modal dialog is shown,
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// this matches the behaviour 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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ProcessPendingEvents();
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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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bool keepSource = false;
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// if a new idle source has not been added, either as a result of idle
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// processing above or by another thread calling WakeUpIdle()
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if (m_idleSourceId == 0)
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{
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// if more idle processing was requested or pending events have appeared
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if (needMore || HasPendingEvents())
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{
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// keep this source installed
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m_idleSourceId = id_save;
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keepSource = true;
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}
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else // add hooks and remove this source
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wx_add_idle_hooks();
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}
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// else remove this source, leave new one installed
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// we must keep an idle source, otherwise a wakeup could be lost
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return keepSource;
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}
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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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static GtkWidget *s_RootWindow = NULL;
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if (s_RootWindow == NULL)
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{
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s_RootWindow = gtk_window_new( GTK_WINDOW_TOPLEVEL );
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gtk_widget_realize( s_RootWindow );
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}
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return s_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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m_isInAssert = false;
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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::SetNativeTheme(const wxString& theme)
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{
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#ifdef __WXGTK3__
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wxUnusedVar(theme);
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return false;
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#else
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wxString path;
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path = gtk_rc_get_theme_dir();
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path += "/";
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path += theme.utf8_str();
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path += "/gtk-2.0/gtkrc";
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if ( wxFileExists(path.utf8_str()) )
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gtk_rc_add_default_file(path.utf8_str());
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else if ( wxFileExists(theme.utf8_str()) )
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gtk_rc_add_default_file(theme.utf8_str());
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else
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{
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wxLogWarning("Theme \"%s\" not available.", theme);
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return false;
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}
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gtk_rc_reparse_all_for_settings(gtk_settings_get_default(), TRUE);
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return true;
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#endif
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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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#ifndef __WXGTK3__
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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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#endif
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#if wxUSE_LIBHILDON || wxUSE_LIBHILDON2
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if ( !GetHildonProgram() )
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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 || wxUSE_LIBHILDON2
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return true;
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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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#endif // wxUSE_THREADS
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// gtk+ 2.0 supports Unicode through UTF-8 strings
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wxConvCurrent = &wxConvUTF8;
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#ifdef __UNIX__
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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(wxT("G_FILENAME_ENCODING")));
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encName = encName.BeforeFirst(wxT(','));
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if (encName.CmpNoCase(wxT("@locale")) == 0)
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encName.clear();
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encName.MakeUpper();
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if (encName.empty())
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{
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#if wxUSE_INTL
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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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// But don't consider ASCII in this case.
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if ( !encName.empty() )
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{
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#if wxUSE_FONTMAP
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wxFontEncoding enc = wxFontMapperBase::GetEncodingFromName(encName);
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if ( enc == wxFONTENCODING_DEFAULT )
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#else // !wxUSE_FONTMAP
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if ( encName == wxT("US-ASCII") )
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#endif // wxUSE_FONTMAP/!wxUSE_FONTMAP
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{
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// This means US-ASCII when returned from GetEncodingFromName().
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encName.clear();
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}
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}
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#endif // wxUSE_INTL
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// (3) finally use UTF-8 by default
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if ( encName.empty() )
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encName = wxT("UTF-8");
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wxSetEnv(wxT("G_FILENAME_ENCODING"), encName);
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}
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static wxConvBrokenFileNames fileconv(encName);
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wxConvFileName = &fileconv;
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#endif // __UNIX__
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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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// Prevent gtk_init_check() from changing the locale automatically for
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// consistency with the other ports that don't do it. If necessary,
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// wxApp::SetCLocale() may be explicitly called.
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gtk_disable_setlocale();
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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 ) != 0;
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#endif
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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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argv_[argc_] = NULL;
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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 cannot enter threads before gtk_init is done
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gdk_threads_enter();
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#if wxUSE_INTL
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wxFont::SetDefaultEncoding(wxLocale::GetSystemEncoding());
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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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}
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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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{
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g_source_remove(m_idleSourceId);
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m_idleSourceId = 0;
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wx_add_idle_hooks();
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}
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return gtk_events_pending() != 0;
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}
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void wxApp::OnAssertFailure(const wxChar *file,
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int line,
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const wxChar* func,
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const wxChar* cond,
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const wxChar *msg)
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{
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// there is no need to do anything if asserts are disabled in this build
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// anyhow
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#if wxDEBUG_LEVEL
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// block wx idle events while assert dialog is showing
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m_isInAssert = true;
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wxAppBase::OnAssertFailure(file, line, func, cond, msg);
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m_isInAssert = false;
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#else // !wxDEBUG_LEVEL
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wxUnusedVar(file);
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wxUnusedVar(line);
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wxUnusedVar(func);
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wxUnusedVar(cond);
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wxUnusedVar(msg);
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#endif // wxDEBUG_LEVEL/!wxDEBUG_LEVEL
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}
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#if wxUSE_THREADS
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void wxGUIAppTraits::MutexGuiEnter()
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{
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gdk_threads_enter();
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}
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void wxGUIAppTraits::MutexGuiLeave()
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{
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gdk_threads_leave();
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}
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#endif // wxUSE_THREADS
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/* static */
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bool wxApp::GTKIsUsingGlobalMenu()
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{
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static int s_isUsingGlobalMenu = -1;
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if ( s_isUsingGlobalMenu == -1 )
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{
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// Currently we just check for this environment variable because this
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// is how support for the global menu is implemented under Ubuntu.
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//
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// If we ever get false positives, we could also check for
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// XDG_CURRENT_DESKTOP env var being set to "Unity".
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wxString proxy;
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s_isUsingGlobalMenu = wxGetEnv("UBUNTU_MENUPROXY", &proxy) &&
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!proxy.empty() && proxy != "0";
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}
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return s_isUsingGlobalMenu == 1;
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}
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#if wxUSE_LIBHILDON || wxUSE_LIBHILDON2
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// Maemo-specific method: get the main program object
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HildonProgram *wxApp::GetHildonProgram()
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{
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return hildon_program_get_instance();
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}
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#endif // wxUSE_LIBHILDON || wxUSE_LIBHILDON2
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