1 /**
2 * \brief Abstraction for different style widget operands
3 *
4 * Copyright (C) 2007 MenTaLguY <mental@rydia.net>
5 * Abhishek Sharma
6 *
7 * Released under GNU GPL. Read the file 'COPYING' for more information.
8 */
10 #include "ui/widget/style-subject.h"
12 #include "desktop.h"
13 #include "sp-object.h"
14 #include "xml/sp-css-attr.h"
15 #include "desktop-style.h"
16 #include "desktop-handles.h"
17 #include "selection.h"
18 #include "style.h"
20 namespace Inkscape {
21 namespace UI {
22 namespace Widget {
24 StyleSubject::StyleSubject() : _desktop(NULL) {
25 }
27 StyleSubject::~StyleSubject() {
28 setDesktop(NULL);
29 }
31 void StyleSubject::setDesktop(SPDesktop *desktop) {
32 if (desktop != _desktop) {
33 if (desktop) {
34 GC::anchor(desktop);
35 }
36 if (_desktop) {
37 GC::release(_desktop);
38 }
39 _desktop = desktop;
40 _afterDesktopSwitch(desktop);
41 _emitChanged();
42 }
43 }
45 StyleSubject::Selection::Selection() {
46 }
48 StyleSubject::Selection::~Selection() {
49 }
51 Inkscape::Selection *StyleSubject::Selection::_getSelection() const {
52 SPDesktop *desktop = getDesktop();
53 if (desktop) {
54 return sp_desktop_selection(desktop);
55 } else {
56 return NULL;
57 }
58 }
60 StyleSubject::iterator StyleSubject::Selection::begin() {
61 Inkscape::Selection *selection = _getSelection();
62 if (selection) {
63 return iterator(selection->list());
64 } else {
65 return iterator(NULL);
66 }
67 }
69 Geom::OptRect StyleSubject::Selection::getBounds(SPItem::BBoxType type) {
70 Inkscape::Selection *selection = _getSelection();
71 if (selection) {
72 return selection->bounds(type);
73 } else {
74 return Geom::OptRect();
75 }
76 }
78 int StyleSubject::Selection::queryStyle(SPStyle *query, int property) {
79 SPDesktop *desktop = getDesktop();
80 if (desktop) {
81 return sp_desktop_query_style(desktop, query, property);
82 } else {
83 return QUERY_STYLE_NOTHING;
84 }
85 }
87 void StyleSubject::Selection::_afterDesktopSwitch(SPDesktop *desktop) {
88 _sel_changed.disconnect();
89 _subsel_changed.disconnect();
90 _sel_modified.disconnect();
91 if (desktop) {
92 _subsel_changed = desktop->connectToolSubselectionChanged(sigc::hide(sigc::mem_fun(*this, &Selection::_emitChanged)));
93 Inkscape::Selection *selection = sp_desktop_selection(desktop);
94 if (selection) {
95 _sel_changed = selection->connectChanged(sigc::hide(sigc::mem_fun(*this, &Selection::_emitChanged)));
96 _sel_modified = selection->connectModified(sigc::hide(sigc::hide(sigc::mem_fun(*this, &Selection::_emitChanged))));
97 }
98 }
99 }
101 void StyleSubject::Selection::setCSS(SPCSSAttr *css) {
102 SPDesktop *desktop = getDesktop();
103 if (desktop) {
104 sp_desktop_set_style(desktop, css);
105 }
106 }
108 StyleSubject::CurrentLayer::CurrentLayer() {
109 _element.data = NULL;
110 _element.next = NULL;
111 }
113 StyleSubject::CurrentLayer::~CurrentLayer() {
114 }
116 void StyleSubject::CurrentLayer::_setLayer(SPObject *layer) {
117 _layer_release.disconnect();
118 _layer_modified.disconnect();
119 if (_element.data) {
120 sp_object_unref(static_cast<SPObject *>(_element.data), NULL);
121 }
122 _element.data = layer;
123 if (layer) {
124 sp_object_ref(layer, NULL);
125 _layer_release = layer->connectRelease(sigc::hide(sigc::bind(sigc::mem_fun(*this, &CurrentLayer::_setLayer), (SPObject *)NULL)));
126 _layer_modified = layer->connectModified(sigc::hide(sigc::hide(sigc::mem_fun(*this, &CurrentLayer::_emitChanged))));
127 }
128 _emitChanged();
129 }
131 SPObject *StyleSubject::CurrentLayer::_getLayer() const {
132 return static_cast<SPObject *>(_element.data);
133 }
135 GSList *StyleSubject::CurrentLayer::_getLayerSList() const {
136 if (_element.data) {
137 return &_element;
138 } else {
139 return NULL;
140 }
141 }
143 StyleSubject::iterator StyleSubject::CurrentLayer::begin() {
144 return iterator(_getLayerSList());
145 }
147 Geom::OptRect StyleSubject::CurrentLayer::getBounds(SPItem::BBoxType type) {
148 SPObject *layer = _getLayer();
149 if (layer && SP_IS_ITEM(layer)) {
150 return SP_ITEM(layer)->getBboxDesktop(type);
151 } else {
152 return Geom::OptRect();
153 }
154 }
156 int StyleSubject::CurrentLayer::queryStyle(SPStyle *query, int property) {
157 GSList *list = _getLayerSList();
158 if (list) {
159 return sp_desktop_query_style_from_list(list, query, property);
160 } else {
161 return QUERY_STYLE_NOTHING;
162 }
163 }
165 void StyleSubject::CurrentLayer::setCSS(SPCSSAttr *css) {
166 SPObject *layer = _getLayer();
167 if (layer) {
168 sp_desktop_apply_css_recursive(layer, css, true);
169 }
170 }
172 void StyleSubject::CurrentLayer::_afterDesktopSwitch(SPDesktop *desktop) {
173 _layer_switched.disconnect();
174 if (desktop) {
175 _layer_switched = desktop->connectCurrentLayerChanged(sigc::mem_fun(*this, &CurrentLayer::_setLayer));
176 _setLayer(desktop->currentLayer());
177 } else {
178 _setLayer(NULL);
179 }
180 }
182 }
183 }
184 }
186 /*
187 Local Variables:
188 mode:c++
189 c-file-style:"stroustrup"
190 c-file-offsets:((innamespace . 0)(inline-open . 0)(case-label . +))
191 indent-tabs-mode:nil
192 fill-column:99
193 End:
194 */
195 // vim: filetype=cpp:expandtab:shiftwidth=4:tabstop=8:softtabstop=4:fileencoding=utf-8:textwidth=99 :