text-tag.h

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00001 // -*- C++ -*-
00002 
00003 /* 
00004  * Gnome Chemistry Utils
00005  * gccv/text-tag.h 
00006  *
00007  * Copyright (C) 2008 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_TAG_H
00026 #define GCCV_TEXT_TAG_H
00027 
00028 #include "structs.h"
00029 #include <gcu/macros.h>
00030 #include <goffice/utils/go-color.h>
00031 #include <pango/pango.h>
00032 #include <list>
00033 #include <string>
00034 
00036 namespace gccv {
00037 
00038 // Text attributes support
00039 typedef enum
00040 {
00041         Invalid,
00042         Family,
00043         Size,
00044         Style,
00045         Weight,
00046         Variant,
00047         Stretch,
00048         Underline,
00049         Strikethrough,
00050         Foreground,
00051         Background,
00052         Rise,
00053         Position,
00054         MaxTag
00055 } Tag;
00056 
00057 typedef enum
00058 {
00059         TagPriorityFirst,
00060         TagPriorityLast,
00061 } TagPriority;
00062 
00063 class TextTag
00064 {
00065 public:
00066         TextTag (Tag tag, TagPriority priority = TagPriorityFirst);
00067         virtual ~TextTag ();
00068 
00069         virtual void Filter (PangoAttrList *l, unsigned start, unsigned end) = 0;
00070         virtual bool operator== (TextTag const& tag) = 0;
00071         virtual TextTag *Duplicate () const = 0;
00072 
00073 private:
00074 
00075 GCU_RO_PROP (Tag, Tag)
00076 GCU_RO_PROP (TagPriority, Priority)
00077 GCU_PROP (unsigned, StartIndex)
00078 GCU_PROP (unsigned, EndIndex)
00079 };
00080 
00081 class FamilyTextTag: public TextTag
00082 {
00083 public:
00084         FamilyTextTag (std::string const &family);
00085         FamilyTextTag (char const *family);
00086         virtual ~FamilyTextTag ();
00087 
00088         void Filter (PangoAttrList *l, unsigned start, unsigned end);
00089         bool operator== (TextTag const& tag);
00090         TextTag *Duplicate () const;
00091 
00092 private:
00093         std::string m_Family;
00094 };
00095 
00096 class SizeTextTag: public TextTag
00097 {
00098 public:
00099         SizeTextTag (double size);
00100         virtual ~SizeTextTag ();
00101 
00102         void Filter (PangoAttrList *l, unsigned start, unsigned end);
00103         bool operator== (TextTag const& tag);
00104         TextTag *Duplicate () const;
00105 
00106 private:
00107         double m_Size;
00108 };
00109 
00110 class StyleTextTag: public TextTag
00111 {
00112 public:
00113         StyleTextTag (PangoStyle style);
00114         virtual ~StyleTextTag ();
00115 
00116         void Filter (PangoAttrList *l, unsigned start, unsigned end);
00117         bool operator== (TextTag const& tag);
00118         TextTag *Duplicate () const;
00119 
00120 private:
00121         PangoStyle m_Style;
00122 };
00123 
00124 class WeightTextTag: public TextTag
00125 {
00126 public:
00127         WeightTextTag (PangoWeight weight);
00128         virtual ~WeightTextTag ();
00129 
00130         void Filter (PangoAttrList *l, unsigned start, unsigned end);
00131         bool operator== (TextTag const& tag);
00132         TextTag *Duplicate () const;
00133 
00134 private:
00135         PangoWeight m_Weight;
00136 };
00137 
00138 class VariantTextTag: public TextTag
00139 {
00140 public:
00141         VariantTextTag (PangoVariant variant);
00142         virtual ~VariantTextTag ();
00143 
00144         void Filter (PangoAttrList *l, unsigned start, unsigned end);
00145         bool operator== (TextTag const& tag);
00146         TextTag *Duplicate () const;
00147 
00148 private:
00149         PangoVariant m_Variant;
00150 };
00151 
00152 class StretchTextTag: public TextTag
00153 {
00154 public:
00155         StretchTextTag (PangoStretch stretch);
00156         virtual ~StretchTextTag ();
00157 
00158         void Filter (PangoAttrList *l, unsigned start, unsigned end);
00159         bool operator== (TextTag const& tag);
00160         TextTag *Duplicate () const;
00161 
00162 private:
00163         PangoStretch m_Stretch;
00164 };
00165 
00166 class UnderlineTextTag: public TextTag
00167 {
00168 public:
00169         UnderlineTextTag (PangoUnderline underline);
00170         virtual ~UnderlineTextTag ();
00171 
00172         void Filter (PangoAttrList *l, unsigned start, unsigned end);
00173         bool operator== (TextTag const& tag);
00174         TextTag *Duplicate () const;
00175 
00176 private:
00177         PangoUnderline m_Underline;
00178 };
00179 
00180 class StrikethroughTextTag: public TextTag
00181 {
00182 public:
00183         StrikethroughTextTag (bool strikethrough);
00184         virtual ~StrikethroughTextTag ();
00185 
00186         void Filter (PangoAttrList *l, unsigned start, unsigned end);
00187         bool operator== (TextTag const& tag);
00188         TextTag *Duplicate () const;
00189 
00190 private:
00191         bool m_Strikethrough;
00192 };
00193 
00194 class ForegroundTextTag: public TextTag
00195 {
00196 public:
00197         ForegroundTextTag (GOColor m_Color);
00198         virtual ~ForegroundTextTag ();
00199 
00200         void Filter (PangoAttrList *l, unsigned start, unsigned end);
00201         bool operator== (TextTag const& tag);
00202         TextTag *Duplicate () const;
00203 
00204 private:
00205         GOColor m_Color;
00206 };
00207 
00208 class BackgroundTextTag: public TextTag
00209 {
00210 public:
00211         BackgroundTextTag (GOColor m_Color);
00212         virtual ~BackgroundTextTag ();
00213 
00214         void Filter (PangoAttrList *l, unsigned start, unsigned end);
00215         bool operator== (TextTag const& tag);
00216         TextTag *Duplicate () const;
00217 
00218 private:
00219         GOColor m_Color;
00220 };
00221 
00222 class RiseTextTag: public TextTag
00223 {
00224 public:
00225         RiseTextTag (double size);
00226         virtual ~RiseTextTag ();
00227 
00228         void Filter (PangoAttrList *l, unsigned start, unsigned end);
00229         bool operator== (TextTag const& tag);
00230         TextTag *Duplicate () const;
00231 
00232 private:
00233         double m_Rise;
00234 };
00235 
00236 class PositionTextTag: public TextTag
00237 {
00238 public:
00239         PositionTextTag (TextPosition position, double size, bool stacked = false);
00240         virtual ~PositionTextTag ();
00241 
00242         void Filter (PangoAttrList *l, unsigned start, unsigned end);
00243         bool operator== (TextTag const& tag);
00244         TextTag *Duplicate () const;
00245 
00246 private:
00247         TextPosition m_Position;
00248         double m_Size; // default size
00249         bool m_Stacked;
00250 };
00251 
00252 class TextTagList:public std::list <TextTag *>
00253 {
00254 public:
00255         TextTagList ();
00256         ~TextTagList ();
00257 };
00258 
00259 }   //  namespace gccv
00260 
00261 #endif  //      GCCV_TEXT_TAG_H

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