C++ sigc::connection类代码示例

static void mesh_toolbox_watch_ec(SPDesktop* desktop, Inkscape::UI::Tools::ToolBase* ec, GObject* holder)
{
    static sigc::connection c_selection_changed;
    static sigc::connection c_selection_modified;
    static sigc::connection c_subselection_changed;
    static sigc::connection c_defs_release;
    static sigc::connection c_defs_modified;

    if (SP_IS_MESH_CONTEXT(ec)) {
        // connect to selection modified and changed signals
        Inkscape::Selection *selection = desktop->getSelection();
        SPDocument *document = desktop->getDocument();

        c_selection_changed = selection->connectChanged(sigc::bind(sigc::ptr_fun(&ms_tb_selection_changed), holder));
        c_selection_modified = selection->connectModified(sigc::bind(sigc::ptr_fun(&ms_tb_selection_modified), holder));
        c_subselection_changed = desktop->connectToolSubselectionChanged(sigc::bind(sigc::ptr_fun(&ms_drag_selection_changed), holder));

        c_defs_release = document->getDefs()->connectRelease(sigc::bind<1>(sigc::ptr_fun(&ms_defs_release), holder));
        c_defs_modified = document->getDefs()->connectModified(sigc::bind<2>(sigc::ptr_fun(&ms_defs_modified), holder));
        ms_tb_selection_changed(selection, holder);
    } else {
        if (c_selection_changed)
            c_selection_changed.disconnect();
        if (c_selection_modified)
            c_selection_modified.disconnect();
        if (c_subselection_changed)
            c_subselection_changed.disconnect();
        if (c_defs_release)
            c_defs_release.disconnect();
        if (c_defs_modified)
            c_defs_modified.disconnect();
    }
}

void
Simple::animate_toggled()
{
  static sigc::connection timer;
  bool  active = m_animate.get_active();
  if (active && !timer.connected())
      timer = Glib::signal_timeout().connect(sigc::mem_fun(*this, &Simple::animate_step), ANIMATE_FRAME_DELAY);
  else if (!active && timer.connected())
      timer.disconnect();
}

static void box3d_toolbox_check_ec(SPDesktop* desktop, Inkscape::UI::Tools::ToolBase* ec, GObject* holder)
{
    static sigc::connection changed;
    if (SP_IS_BOX3D_CONTEXT(ec)) {
        changed = sp_desktop_selection(desktop)->connectChanged(sigc::bind(sigc::ptr_fun(box3d_toolbox_selection_changed), holder));
        box3d_toolbox_selection_changed(sp_desktop_selection(desktop), holder);
    } else {
        if (changed)
            changed.disconnect();
    }
}

static void arc_toolbox_check_ec(SPDesktop* desktop, Inkscape::UI::Tools::ToolBase* ec, GObject* holder)
{
    static sigc::connection changed;

    if (SP_IS_ARC_CONTEXT(ec)) {
        changed = desktop->getSelection()->connectChanged(sigc::bind(sigc::ptr_fun(sp_arc_toolbox_selection_changed), holder));
        sp_arc_toolbox_selection_changed(desktop->getSelection(), holder);
    } else {
        if (changed)
            changed.disconnect();
    }
}

	void updateSrcRectCon()
	{
		/* Cut old connection */
		srcRectCon.disconnect();
		/* Create new one */
		srcRectCon = srcRect->valueChanged.connect
				(sigc::mem_fun(this, &SpritePrivate::onSrcRectChange));
	}

static void rect_toolbox_watch_ec(SPDesktop* desktop, Inkscape::UI::Tools::ToolBase* ec, GObject* holder)
{
    static sigc::connection changed;

    // use of dynamic_cast<> seems wrong here -- we just need to check the current tool

    if (dynamic_cast<Inkscape::UI::Tools::RectTool *>(ec)) {
        Inkscape::Selection *sel = desktop->getSelection();

        changed = sel->connectChanged(sigc::bind(sigc::ptr_fun(sp_rect_toolbox_selection_changed), holder));

        // Synthesize an emission to trigger the update
        sp_rect_toolbox_selection_changed(sel, holder);
    } else {
        if (changed) {
            changed.disconnect();
            purge_repr_listener(NULL, holder);
        }
    }
}

/**
 * Checks the current tool and connects gradient aux toolbox signals if it happens to be the gradient tool.
 * Called every time the current tool changes by signal emission.
 */
static void gradient_toolbox_check_ec(SPDesktop* desktop, Inkscape::UI::Tools::ToolBase* ec, GObject* holder)
{
    static sigc::connection connChanged;
    static sigc::connection connModified;
    static sigc::connection connSubselectionChanged;
    static sigc::connection connDefsRelease;
    static sigc::connection connDefsModified;

    if (SP_IS_GRADIENT_CONTEXT(ec)) {
        Inkscape::Selection *selection = sp_desktop_selection(desktop);
        SPDocument *document = sp_desktop_document(desktop);

        // connect to selection modified and changed signals
        connChanged = selection->connectChanged(sigc::bind(sigc::ptr_fun(&gr_tb_selection_changed), holder));
        connModified = selection->connectModified(sigc::bind(sigc::ptr_fun(&gr_tb_selection_modified), holder));
        connSubselectionChanged = desktop->connectToolSubselectionChanged(sigc::bind(sigc::ptr_fun(&gr_drag_selection_changed), holder));

        // Is this necessary? Couldn't hurt.
        gr_tb_selection_changed(selection, holder);

        // connect to release and modified signals of the defs (i.e. when someone changes gradient)
        connDefsRelease = document->getDefs()->connectRelease(sigc::bind<1>(sigc::ptr_fun(&gr_defs_release), GTK_WIDGET(holder)));
        connDefsModified = document->getDefs()->connectModified(sigc::bind<2>(sigc::ptr_fun(&gr_defs_modified), GTK_WIDGET(holder)));
    } else {
        if (connChanged)
            connChanged.disconnect();
        if (connModified)
            connModified.disconnect();
        if (connSubselectionChanged)
            connSubselectionChanged.disconnect();
        if (connDefsRelease)
            connDefsRelease.disconnect();
        if (connDefsModified)
            connDefsModified.disconnect();
    }
}

namespace Gui {

bool Screen::initted = false;
int Screen::width;
int Screen::height;
int Screen::realWidth;
int Screen::realHeight;
float Screen::invRealWidth;
float Screen::invRealHeight;
float Screen::fontScale[2];
std::list<Widget*> Screen::kbshortcut_widgets;
Gui::Fixed *Screen::baseContainer;
Gui::Widget *Screen::focusedWidget;
GLdouble Screen::modelMatrix[16];
GLdouble Screen::projMatrix[16];
GLint Screen::viewport[4];

FontCache Screen::s_fontCache;
std::stack< RefCountedPtr<Text::TextureFont> > Screen::s_fontStack;
RefCountedPtr<Text::TextureFont>Screen::s_defaultFont;

Graphics::Renderer *Screen::s_renderer;

void Screen::Init(Graphics::Renderer *renderer, int real_width, int real_height, int ui_width, int ui_height)
{
    s_renderer = renderer;

	Screen::width = ui_width;
	Screen::height = ui_height;
	Screen::realWidth = real_width;
	Screen::realHeight = real_height;
	Screen::invRealWidth = 1.0f/real_width;
	Screen::invRealHeight = 1.0f/real_height;
	Screen::initted = true;
	// Why? because although our font textures get bigger with screen
	// resolution, our Gui Ortho projection is still 800x600 so vertex
	// coords must be scaled.
	Screen::fontScale[0] = ui_width / float(real_width);
	Screen::fontScale[1] = ui_height / float(real_height);
    s_defaultFont = s_fontCache.GetTextureFont("GuiFont");
    PushFont(s_defaultFont);
	Screen::baseContainer = new Gui::Fixed();
	Screen::baseContainer->SetSize(float(Screen::width), float(Screen::height));
	Screen::baseContainer->Show();
}

void Screen::Uninit()
{
	Screen::baseContainer->RemoveAllChildren();		// children deleted elsewhere?
	delete Screen::baseContainer;
}

static sigc::connection _focusedWidgetOnDelete;

void Screen::OnDeleteFocusedWidget()
{
	_focusedWidgetOnDelete.disconnect();
	focusedWidget = 0;
	SDL_EnableKeyRepeat(0, 0); // disable key repeat
}

void Screen::SetFocused(Widget *w, bool enableKeyRepeat)
{
	ClearFocus();
	if (enableKeyRepeat)
		SDL_EnableKeyRepeat(SDL_DEFAULT_REPEAT_DELAY, SDL_DEFAULT_REPEAT_INTERVAL);
	_focusedWidgetOnDelete = w->onDelete.connect(sigc::ptr_fun(&Screen::OnDeleteFocusedWidget));
	focusedWidget = w;
}

void Screen::ClearFocus()
{
	if (!focusedWidget) return;
	_focusedWidgetOnDelete.disconnect();
	focusedWidget = 0;
	SDL_EnableKeyRepeat(0, 0); // disable key repeat
}

void Screen::ShowBadError(const char *msg)
{
	baseContainer->HideChildren();

	Gui::Fixed *f = new Gui::Fixed(6*GetWidth()/8.0f, 6*GetHeight()/8.0f);
	Gui::Screen::AddBaseWidget(f, GetWidth()/8, GetHeight()/8);
	f->SetTransparency(false);
	f->SetBgColor(0.4f,0,0,1.0f);
	f->Add(new Gui::Label(msg), 10, 10);

	Gui::Button *okButton = new Gui::LabelButton(new Gui::Label("Ok"));
	okButton->SetShortcut(SDLK_RETURN, KMOD_NONE);
	f->Add(okButton, 10.0f, 6*GetHeight()/8.0f - 32);
	f->ShowAll();
	f->Show();

	do {
		Gui::MainLoopIteration();
		SDL_Delay(10);
	} while (!okButton->IsPressed());

	Gui::Screen::RemoveBaseWidget(f);
//.........这里部分代码省略.........

 void stopSimulationRequested()
 {
     if (runner.isRunning())
         runner.interrupt();
     if (!progressTimer.empty())
         progressTimer.disconnect();
     updateProgressBar();
 }

	~WindowVXPrivate()
	{
		shState->texPool().release(base.tex);

		cursorRectCon.disconnect();
		toneCon.disconnect();
		prepareCon.disconnect();
	}

void Screen::ClearFocus()
{
	if (!focusedWidget) return;
	_focusedWidgetOnDelete.disconnect();
	focusedWidget = 0;
	SDL_EnableKeyRepeat(0, 0); // disable key repeat
}

 virtual bool close()
 {
     monitorOutput.close();
     m_timer.disconnect();
     fprintf(stdout,"done...\n");
     yarp::os::exit(1);        
     return true;
 }

void Screen::SetFocused(Widget *w)
{
	if (focusedWidget) {
		_focusedWidgetOnDelete.disconnect();
	}
	_focusedWidgetOnDelete = w->onDelete.connect(sigc::ptr_fun(&Screen::OnDeleteFocusedWidget));
	focusedWidget = w;
}

void on_thread_back_clicked() {
	///To be run when the back button is clicked while viewing a thread
	
	boardView();
	Gtk::TreeView *threadlist = 0;
	pWebKitView = WEBKIT_WEB_VIEW (webkit_web_view_new ());
	Gtk::ScrolledWindow *imgview = 0;
	builder->get_widget("scrolledwindow3", imgview);
	imgview->set_visible(true);
	imgview->show();
	
	gtk_container_add (GTK_CONTAINER (imgview->gobj()), GTK_WIDGET (pWebKitView));
	webkit_web_view_load_uri(pWebKitView, "about:blank");
	webkit_web_view_set_zoom_level(pWebKitView, true);
	gtk_widget_set_can_focus(GTK_WIDGET(pWebKitView), true);
	gtk_widget_show(GTK_WIDGET(pWebKitView));
	builder->get_widget("treeview2", threadlist);
	Glib::RefPtr<Gtk::TreeSelection> thread_selection = threadlist->get_selection();
	thread_selection->signal_changed().connect(sigc::bind<Glib::RefPtr<Gtk::TreeSelection>, WebKitWebView*>(sigc::ptr_fun(&on_selection_changed), thread_selection, pWebKitView));
	
	POST_CLICK_CONNECT.disconnect();
	POST_REFRESH_CONNECT.disconnect();
}

	~ViewportPrivate()
	{
		rectCon.disconnect();
	}