text-object.h

00001 // -*- C++ -*-
00002 
00003 /* 
00004  * GChemPaint libray
00005  * text-object.h 
00006  *
00007  * Copyright (C) 2002-2007 Jean Bréfort <jean.brefort@normalesup.org>
00008  *
00009  * This program is free software; you can redistribute it and/or 
00010  * modify it under the terms of the GNU General Public License as 
00011  * published by the Free Software Foundation; either version 2 of the
00012  * License, or (at your option) any later version.
00013  *
00014  * This program is distributed in the hope that it will be useful,
00015  * but WITHOUT ANY WARRANTY; without even the implied warranty of
00016  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
00017  * GNU General Public License for more details.
00018  *
00019  * You should have received a copy of the GNU General Public License
00020  * along with this program; if not, write to the Free Software
00021  * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA  02110-1301
00022  * USA
00023  */
00024 
00025 #ifndef GCHEMPAINT_TEXT_OBJECT_H
00026 #define GCHEMPAINT_TEXT_OBJECT_H
00027 
00028 #include <gcu/object.h>
00029 #include <gcu/macros.h>
00030 #include <pango/pango-layout.h>
00031 #include <string>
00032 #include <canvas/gcp-canvas-pango.h>
00033 
00034 using namespace gcu;
00035 using namespace std;
00036 
00037 namespace gcp {
00038 
00039 class TextObject: public Object
00040 {
00041 public:
00042         TextObject (TypeId Type);
00043         TextObject (double x, double y, TypeId Type);
00044         virtual ~TextObject ();
00045         
00046         void GetSize (double& x, double& y) {x = m_length; y = m_height;}
00047         xmlNodePtr SaveSelected ();
00048         void LoadSelected (xmlNodePtr node);
00049         virtual bool OnChanged (bool save) = 0;
00050         void OnSelChanged (struct GnomeCanvasPangoSelBounds *bounds);
00051         bool SaveNode (xmlDocPtr xml, xmlNodePtr);
00052         bool Load (xmlNodePtr);
00053         void Move (double x, double y, double z = 0);
00054         bool IsLocked () {return m_bLoading;}
00055         void GetSelectionBounds (unsigned &start, unsigned &end) {start = m_StartSel; end = m_EndSel;}
00056         string GetBuffer () {return m_buf;}
00057 
00058 protected:
00059         double m_x, m_y, m_length, m_height;
00060         int m_ascent;
00061         int m_InsertOffset;
00062         string m_buf;
00063         bool m_bLoading;
00064         unsigned m_StartSel, m_EndSel;
00065         bool m_RealSave;
00066 
00067 GCU_PROT_PROP (PangoLayout*, Layout);
00068 GCU_PROT_PROP (PangoAttrList*, AttrList);
00069 };
00070 
00071 }       // namespace gcp
00072 
00073 #endif  //GCHEMPAINT_TEXT_OBJECT_H

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