The Gnome Chemistry Utils 0.13.3
gccv/text.h
Go to the documentation of this file.
00001 // -*- C++ -*-
00002 
00003 /* 
00004  * Gnome Chemistry Utils
00005  * gccv/text.h 
00006  *
00007  * Copyright (C) 2008-2010 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 GCCV_TEXT_H
00026 #define GCCV_TEXT_H
00027 
00028 #include "rectangle.h"
00029 #include "structs.h"
00030 #include <gtk/gtk.h>
00031 #include <gdk/gdkkeysyms.h>
00032 #include <pango/pango.h>
00033 #include <list>
00034 #include <string>
00035 
00037 namespace gccv {
00038 
00057 #define GCCV_TEXT_PROP(type,member) \
00058 public: \
00059         void Set##member (type val) {   \
00060                 m_##member = val;       \
00061                 SetPosition (m_x, m_y); \
00062         }       \
00063         type Get##member (void) const {return m_##member;}      \
00064 private:        \
00065         type m_##member;
00066 
00067 // These are private classes
00068 class TextPrivate;
00069 class TextLine;
00070 class TextRun;
00071 class TextTag;
00072 class TextTagList;
00073 
00079 class Text: public Rectangle
00080 {
00081 friend class TextPrivate;
00082 public:
00091         Text (Canvas *canvas, double x, double y);
00101         Text (Group *parent, double x, double y, ItemClient *client = NULL);
00105         virtual ~Text ();
00106 
00114         void SetPosition (double x, double y);
00120         void SetText (char const *text);
00126         void SetText (std::string const &text);
00132         void SetFontDescription (PangoFontDescription *desc);
00138         void SetColor (GOColor color);
00144         void SetEditing (bool editing);
00145 
00152         void GetBounds (Rect *ink, Rect *logical);
00156         char const *GetText ();
00157 
00164         void InsertTextTag (TextTag *tag, bool rebuild_attributes = true);
00171         void DeleteTextTag (TextTag *tag, bool rebuild_attributes = true);
00175         std::list <TextTag *> const *GetTags () {return &m_Tags;}
00176 
00182         void SetCurTagList (TextTagList *l);
00183 
00189         void ApplyTagsToSelection (TextTagList const *l);
00190 
00200         void ReplaceText (std::string &str, int pos, unsigned length);
00201         unsigned GetCursorPosition () {return m_CurPos;}
00202         void GetSelectionBounds (unsigned &start, unsigned &end);
00203         void SetSelectionBounds (unsigned start, unsigned end);
00204         unsigned GetIndexAt (double x, double y);
00205         bool GetPositionAtIndex (unsigned index, Rect &rect);
00206 
00207         // virtual methods
00214         void Draw (cairo_t *cr, bool is_vector) const;
00221         void Move (double x, double y);
00222 
00223         // events related methods
00229         bool OnKeyPressed (GdkEventKey *event);
00235         bool OnKeyReleased (GdkEventKey *event);
00243         void OnButtonPressed (double x, double y);
00251         void OnDrag (double x, double y);
00252 
00253         // static methods
00258         static PangoContext *GetContext ();
00259 
00263         unsigned GetDefaultFontSize () { return (m_FontDesc)? (double) pango_font_description_get_size (m_FontDesc) / PANGO_SCALE: 0; }
00267         void RebuildAttributes ();
00275         void SetInterline (double interline, bool emit_changed = false);
00283         void SetJustification (GtkJustification justification, bool emit_changed = false);
00284 
00285 private:
00286         double m_x, m_y;
00287         unsigned long m_BlinkSignal;
00288         bool m_CursorVisible;
00289         unsigned m_CurPos, m_StartSel;
00290         std::list <TextRun *> m_Runs;
00291         std::list <TextTag *> m_Tags;
00292         std::string m_Text;
00293         GtkIMContext *m_ImContext;
00294         PangoFontDescription *m_FontDesc;
00295         TextTagList *m_CurTags;
00296         TextLine *m_Lines;
00297         unsigned m_LinesNumber;
00298         GOColor m_Color;
00299 
00308 GCCV_TEXT_PROP (double, Padding)
00317 GCCV_TEXT_PROP (Anchor, Anchor)
00328 GCCV_TEXT_PROP (double, LineOffset)
00332 GCU_RO_PROP (GtkJustification, Justification)
00336 GCU_RO_PROP (double, Interline)
00340 GCU_RO_PROP (double, Width)
00344 GCU_RO_PROP (double, Height)
00348 GCU_RO_PROP (double, Ascent)
00352 GCU_RO_PROP (double, Y)
00353 };
00354 
00355 }   //  namespace gccv
00356 
00357 #endif  //      GCCV_TEXT_H