aboutsummaryrefslogtreecommitdiff
path: root/src/FbTk/Theme.hh
blob: 563796dd1085a9b8ad105925d760b61768c99036 (plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
// Theme.hh for FbTk - Fluxbox ToolKit
// Copyright (c) 2002 - 2003 Henrik Kinnunen (fluxgen at users.sourceforge.net)
//
// Permission is hereby granted, free of charge, to any person obtaining a
// copy of this software and associated documentation files (the "Software"),
// to deal in the Software without restriction, including without limitation
// the rights to use, copy, modify, merge, publish, distribute, sublicense,
// and/or sell copies of the Software, and to permit persons to whom the
// Software is furnished to do so, subject to the following conditions:
//
// The above copyright notice and this permission notice shall be included in
// all copies or substantial portions of the Software.
//
// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
// FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL
// THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
// LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
// FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
// DEALINGS IN THE SOFTWARE.

// $Id: Theme.hh,v 1.8 2003/08/28 14:19:27 fluxgen Exp $

/**
 @file holds ThemeItem<T>, Theme and ThemeManager which is the base for any theme
*/

#ifndef FBTK_THEME_HH
#define FBTK_THEME_HH

#include <string>
#include <list>
#include <string>

#include "XrmDatabaseHelper.hh"
#include "Subject.hh"

namespace FbTk {

class Theme;

/// Base class for ThemeItem, holds name and altname
/**
  @see ThemeItem
*/
class ThemeItem_base {
public:
    ThemeItem_base(const std::string &name, const std::string &altname):
        m_name(name), m_altname(altname) { }
    virtual ~ThemeItem_base() { }
    virtual void setFromString(const char *str) = 0;
    virtual void setDefaultValue() = 0;
    virtual void load() = 0; // if it needs to load additional stuff
    const std::string &name() const { return m_name; }
    const std::string &altName() const { return m_altname; }
private:
    std::string m_name, m_altname;
};


/// template ThemeItem class for basic theme items
/// to use this you need to specialize setDefaultValue, setFromString and load
template <typename T>
class ThemeItem:public ThemeItem_base {
public:
    ThemeItem(FbTk::Theme &tm, const std::string &name, const std::string &altname);
    virtual ~ThemeItem();
    /// specialized
    void setDefaultValue(); 
    /// specialized
    void setFromString(const char *strval);
    /// specialized
    void load();
    /**
       @name access operators
    */
    /**@{*/
    inline T& operator*() { return m_value; }
    inline const T& operator*() const { return m_value; }
    inline T *operator->() { return &m_value; }
    inline const T *operator->() const { return &m_value; }
    /**@}*/

    FbTk::Theme &theme() { return m_tm; }
private:

    T m_value;
    FbTk::Theme &m_tm;
};


/// Hold ThemeItems. Use this to create a Theme set
class Theme {
public:
    explicit Theme(int screen_num); // create a theme for a specific screen
    virtual ~Theme();
    virtual void reconfigTheme() = 0;
    int screenNum() const { return m_screen_num; }
    std::list<ThemeItem_base *> &itemList() { return m_themeitems; }
    const std::list<ThemeItem_base *> &itemList() const { return m_themeitems; }
    /// add ThemeItem
    template <typename T>
    void add(ThemeItem<T> &item);
    /// remove ThemeItem
    template <typename T>
    void remove(ThemeItem<T> &item);
    virtual bool fallback(ThemeItem_base &base) { return false; }
    FbTk::Subject &reconfigSig() { return m_reconfig_sig; }
private:
    const int m_screen_num;
    typedef std::list<ThemeItem_base *> ItemList;
    ItemList m_themeitems;
    FbTk::Subject m_reconfig_sig;
};


/// Singleton theme manager
/**
 Use this to load all the registred themes
*/
class ThemeManager {
public:
    static ThemeManager &instance();
    bool load(const std::string &filename);
    std::string resourceValue(const std::string &name, const std::string &altname);
    void loadTheme(Theme &tm);
    bool loadItem(ThemeItem_base &resource);
    bool loadItem(ThemeItem_base &resource, const std::string &name, const std::string &altname);
private:
    ThemeManager();
    ~ThemeManager() { }

    friend class FbTk::Theme; // so only theme can register itself in constructor
    /// @return false if screen_num if out of 
    /// range or theme already registered, else true
    bool registerTheme(FbTk::Theme &tm); 
    /// @return false if theme isn't registred in the manager
    bool unregisterTheme(FbTk::Theme &tm);
    /// map each theme manager to a screen
    typedef std::list<FbTk::Theme *> ThemeList;
    ThemeList m_themelist;
    const int m_max_screens;
    XrmDatabaseHelper m_database;
};



template <typename T>
ThemeItem<T>::ThemeItem(FbTk::Theme &tm, 
                        const std::string &name, const std::string &altname):
    ThemeItem_base(name, altname),
    m_tm(tm) {
    tm.add(*this);
    setDefaultValue();
}

template <typename T>
ThemeItem<T>::~ThemeItem() {
    m_tm.remove(*this);
}

template <typename T>
void Theme::add(ThemeItem<T> &item) {
    m_themeitems.push_back(&item);
    m_themeitems.unique();
}

template <typename T>
void Theme::remove(ThemeItem<T> &item)  {
    m_themeitems.remove(&item);
}

}; // end namespace FbTk

#endif // FBTK_THEME_HH