ui/view/view.h

	view.h revision 690d37ddd3470e494dde1e3ee20b942736e734d2
905N/A#ifndef INKSCAPE_UI_VIEW_VIEW_H
905N/A#define INKSCAPE_UI_VIEW_VIEW_H
905N/A
905N/A/** \file
905N/A * Abstract base class for all SVG document views
905N/A *
905N/A * Authors:
905N/A *   Lauris Kaplinski <lauris@kaplinski.com>
905N/A *   Ralf Stephan <ralf@ark.in-berlin.de>
905N/A *
905N/A * Copyright (C) 2001-2002 Lauris Kaplinski
905N/A * Copyright (C) 2001 Ximian, Inc.
905N/A *
905N/A * Released under GNU GPL, read the file 'COPYING' for more information
905N/A */
905N/A
905N/A#include <gdk/gdktypes.h>
905N/A#include <sigc++/connection.h>
905N/A#include "message.h"
905N/A#include "gc-managed.h"
3996N/A#include "gc-finalized.h"
905N/A#include "gc-anchored.h"
905N/A#include <libnr/nr-forward.h>
905N/A#include <2geom/forward.h>
905N/A
905N/A/**
905N/A * Iterates until true or returns false.
905N/A * When used as signal accumulator, stops emission if one slot returns true.
905N/A */
905N/Astruct StopOnTrue {
905N/A  typedef bool result_type;
1273N/A
905N/A  template<typename T_iterator>
3661N/A  result_type operator()(T_iterator first, T_iterator last) const{
3661N/A      for (; first != last; ++first)
3996N/A          if (*first) return true;
3996N/A      return false;
3996N/A  }
905N/A};
905N/A
905N/A/**
905N/A * Iterates until nonzero or returns 0.
905N/A * When used as signal accumulator, stops emission if one slot returns nonzero.
905N/A */
905N/Astruct StopOnNonZero {
905N/A  typedef int result_type;
905N/A
905N/A  template<typename T_iterator>
905N/A  result_type operator()(T_iterator first, T_iterator last) const{
905N/A      for (; first != last; ++first)
905N/A          if (*first) return *first;
905N/A      return 0;
905N/A  }
3996N/A};
3996N/A
class SPDocument;

namespace Inkscape {
    class MessageContext;
    class MessageStack;
    namespace UI {
        namespace View {

/**
 * View is an abstract base class of all UI document views.  This
 * includes both the editing window and the SVG preview, but does not
 * include the non-UI RGBA buffer-based NRArena nor the XML editor or
 * similar views.  The View base class has very little functionality of
 * its own.
 */
class View : public GC::Managed<>,
             public GC::Finalized,
             public GC::Anchored
{
public:

    View();
    virtual ~View();

    void close() { _close(); }

    /// Returns a pointer to the view's document.
    SPDocument *doc() const
      { return _doc; }
    /// Returns a pointer to the view's message stack.
    Inkscape::MessageStack *messageStack() const
      { return _message_stack; }
    /// Returns a pointer to the view's tipsMessageContext.
    Inkscape::MessageContext *tipsMessageContext() const
      { return _tips_message_context; }

    void setPosition(gdouble x, gdouble y);
    void setPosition(Geom::Point const &p);
    void emitResized(gdouble width, gdouble height);
    void requestRedraw();

    // view subclasses must give implementations of these methods

    virtual bool shutdown() = 0;
    virtual void mouseover() = 0;
    virtual void mouseout() = 0;

    virtual void onPositionSet (double, double) = 0;
    virtual void onResized (double, double) = 0;
    virtual void onRedrawRequested() = 0;
    virtual void onStatusMessage (Inkscape::MessageType type, gchar const *message) = 0;
    virtual void onDocumentURISet (gchar const* uri) = 0;
    virtual void onDocumentResized (double, double) = 0;

protected:
    SPDocument *_doc;
    Inkscape::MessageStack *_message_stack;
    Inkscape::MessageContext *_tips_message_context;

    virtual void _close();
    virtual void setDocument(SPDocument *doc);

    sigc::signal<void,double,double>   _position_set_signal;
    sigc::signal<void,double,double>   _resized_signal;
    sigc::signal<void,gchar const*>    _document_uri_set_signal;
    sigc::signal<void>                 _redraw_requested_signal;

private:
    sigc::connection _position_set_connection;
    sigc::connection _resized_connection;
    sigc::connection _redraw_requested_connection;
    sigc::connection _message_changed_connection;  // foreign
    sigc::connection _document_uri_set_connection; // foreign
    sigc::connection _document_resized_connection; // foreign
};

}}}

#endif  // INKSCAPE_UI_VIEW_VIEW_H

/*
  Local Variables:
  mode:c++
  c-file-style:"stroustrup"
  c-file-offsets:((innamespace . 0)(inline-open . 0)(case-label . +))
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  End:
*/
// vim: filetype=cpp:expandtab:shiftwidth=4:tabstop=8:softtabstop=4 :