1 /* === S Y N F I G ========================================================= */
2 /*! \file adjust_window.cpp
3 ** \brief Adjustment Window Implementation File
4 **
5 ** $Id$
6 **
7 ** \legal
8 ** Copyright (c) 2004 Adrian Bentley
9 **
10 ** This package is free software; you can redistribute it and/or
11 ** modify it under the terms of the GNU General Public License as
12 ** published by the Free Software Foundation; either version 2 of
13 ** the License, or (at your option) any later version.
14 **
15 ** This package is distributed in the hope that it will be useful,
16 ** but WITHOUT ANY WARRANTY; without even the implied warranty of
17 ** MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
18 ** General Public License for more details.
19 ** \endlegal
20 */
21 /* ========================================================================= */
22
23 /* === H E A D E R S ======================================================= */
24
25 #ifdef USING_PCH
26 # include "pch.h"
27 #else
28 #ifdef HAVE_CONFIG_H
29 # include <config.h>
30 #endif
31
32 #include <synfig/general.h>
33
34 #include "adjust_window.h"
35 #include "app.h"
36
37 #include <gui/localization.h>
38
39 #endif
40
41 /* === U S I N G =========================================================== */
42
43 using namespace std;
44 //using namespace etl;
45 //using namespace synfig;
46
47 using studio::Adjust_Window;
48
49 /* === M A C R O S ========================================================= */
50 const double EPSILON = 1.0e-6;
51
52 /* === G L O B A L S ======================================================= */
53
54 /* === P R O C E D U R E S ================================================= */
55
56 /* === M E T H O D S ======================================================= */
57
58 /* === E N T R Y P O I N T ================================================= */
59
Adjust_Window(double value,double lower,double upper,double stepinc,double pageinc,double pagesize,const Glib::RefPtr<Gtk::Adjustment> & adj)60 Adjust_Window::Adjust_Window(double value, double lower, double upper,
61 double stepinc, double pageinc, double pagesize,
62 const Glib::RefPtr<Gtk::Adjustment> &adj)
63 : Adjustment(value,lower,upper,stepinc,pageinc,pagesize),
64 adj_child(0)
65 {
66 if(adj) set_child_adjustment(adj);
67 }
68
~Adjust_Window()69 Adjust_Window::~Adjust_Window()
70 {
71 //connections should automatically be killed etc.
72 }
73
74 //child interface functions
get_child_adjustment()75 Glib::RefPtr<Gtk::Adjustment> Adjust_Window::get_child_adjustment()
76 {
77 return adj_child;
78 }
79
get_child_adjustment() const80 Glib::RefPtr<const Gtk::Adjustment> Adjust_Window::get_child_adjustment() const
81 {
82 return adj_child;
83 }
84
set_child_adjustment(const Glib::RefPtr<Gtk::Adjustment> & child)85 void Adjust_Window::set_child_adjustment(const Glib::RefPtr<Gtk::Adjustment> &child)
86 {
87 childchanged.disconnect();
88
89 adj_child = child;
90
91 // synfig::info("Adjust: connecting to child signals");
92
93 if(child)
94 {
95 childchanged = child->signal_changed().connect(sigc::mem_fun(*this,&Adjust_Window::update_fromchild));
96
97 update_child();
98 }
99 }
100
on_changed()101 void Adjust_Window::on_changed()
102 {
103 if (getenv("SYNFIG_DEBUG_ON_CHANGED"))
104 printf("%s:%d Adjust_Window::on_changed()\n", __FILE__, __LINE__);
105
106 update_child();
107 }
108
on_value_changed()109 void Adjust_Window::on_value_changed()
110 {
111 update_child();
112 }
113
114 //SUB TIME FUNCTIONS
get_sub_lower() const115 double Adjust_Window::get_sub_lower() const
116 {
117 return get_value();
118 }
119
get_sub_upper() const120 double Adjust_Window::get_sub_upper() const
121 {
122 return get_value() + get_page_size();
123 }
124
125 //---- REFRESH FUNCTIONS -----
update_child()126 void Adjust_Window::update_child()
127 {
128 if(adj_child)
129 {
130 bool childchanged = false;
131
132 double v = get_value();
133 double ve = v + get_page_size();
134
135 //reset child's values if they need to be...
136 if(abs(v - adj_child->get_lower()) > EPSILON)
137 {
138 adj_child->set_lower(v);
139 childchanged = true;
140 }
141
142 if(abs(ve - adj_child->get_upper()) > EPSILON)
143 {
144 adj_child->set_upper(ve);
145 childchanged = true;
146 }
147
148 if(childchanged)
149 {
150 adj_child->changed();
151 }
152 }
153 }
154
update_fromchild()155 void Adjust_Window::update_fromchild()
156 {
157 if(adj_child)
158 {
159 double b = adj_child->get_lower();
160 double dist = adj_child->get_upper() - b;
161
162 //reset our values if they need to be...
163 if(abs(get_value() - b) > EPSILON)
164 {
165 set_value(b);
166 value_changed();
167 }
168
169 if(abs(get_page_size() - dist) > EPSILON)
170 {
171 set_page_size(dist);
172 changed();
173 }
174 }
175 }
176