a2e8a25478d6e455e08d576d46849c54e800a238
1 /**
2 * \brief Abstraction for different style widget operands
3 *
4 * Copyright (C) 2007 MenTaLguY <mental@rydia.net>
5 *
6 * Released under GNU GPL. Read the file 'COPYING' for more information.
7 */
9 #include "ui/widget/style-subject.h"
11 #include "desktop.h"
12 #include "sp-object.h"
13 #include "xml/sp-css-attr.h"
14 #include "desktop-style.h"
15 #include "desktop-handles.h"
16 #include "selection.h"
17 #include "style.h"
19 namespace Inkscape {
20 namespace UI {
21 namespace Widget {
23 StyleSubject::StyleSubject() : _desktop(NULL) {
24 }
26 StyleSubject::~StyleSubject() {
27 setDesktop(NULL);
28 }
30 void StyleSubject::setDesktop(SPDesktop *desktop) {
31 if (desktop != _desktop) {
32 if (desktop) {
33 GC::anchor(desktop);
34 }
35 if (_desktop) {
36 GC::release(_desktop);
37 }
38 _desktop = desktop;
39 _afterDesktopSwitch(desktop);
40 _emitChanged();
41 }
42 }
44 StyleSubject::Selection::Selection() {
45 }
47 StyleSubject::Selection::~Selection() {
48 }
50 Inkscape::Selection *StyleSubject::Selection::_getSelection() const {
51 SPDesktop *desktop = getDesktop();
52 if (desktop) {
53 return sp_desktop_selection(desktop);
54 } else {
55 return NULL;
56 }
57 }
59 StyleSubject::iterator StyleSubject::Selection::begin() {
60 Inkscape::Selection *selection = _getSelection();
61 if (selection) {
62 return iterator(selection->list());
63 } else {
64 return iterator(NULL);
65 }
66 }
68 boost::optional<Geom::Rect> StyleSubject::Selection::getBounds(SPItem::BBoxType type) {
69 Inkscape::Selection *selection = _getSelection();
70 if (selection) {
71 return selection->bounds(type);
72 } else {
73 return boost::optional<Geom::Rect>();
74 }
75 }
77 int StyleSubject::Selection::queryStyle(SPStyle *query, int property) {
78 SPDesktop *desktop = getDesktop();
79 if (desktop) {
80 return sp_desktop_query_style(desktop, query, property);
81 } else {
82 return QUERY_STYLE_NOTHING;
83 }
84 }
86 void StyleSubject::Selection::_afterDesktopSwitch(SPDesktop *desktop) {
87 _sel_changed.disconnect();
88 _subsel_changed.disconnect();
89 _sel_modified.disconnect();
90 if (desktop) {
91 _subsel_changed = desktop->connectToolSubselectionChanged(sigc::hide(sigc::mem_fun(*this, &Selection::_emitChanged)));
92 Inkscape::Selection *selection = sp_desktop_selection(desktop);
93 if (selection) {
94 _sel_changed = selection->connectChanged(sigc::hide(sigc::mem_fun(*this, &Selection::_emitChanged)));
95 _sel_modified = selection->connectModified(sigc::hide(sigc::hide(sigc::mem_fun(*this, &Selection::_emitChanged))));
96 }
97 }
98 }
100 void StyleSubject::Selection::setCSS(SPCSSAttr *css) {
101 SPDesktop *desktop = getDesktop();
102 if (desktop) {
103 sp_desktop_set_style(desktop, css);
104 }
105 }
107 StyleSubject::CurrentLayer::CurrentLayer() {
108 _element.data = NULL;
109 _element.next = NULL;
110 }
112 StyleSubject::CurrentLayer::~CurrentLayer() {
113 }
115 void StyleSubject::CurrentLayer::_setLayer(SPObject *layer) {
116 _layer_release.disconnect();
117 _layer_modified.disconnect();
118 if (_element.data) {
119 sp_object_unref(static_cast<SPObject *>(_element.data), NULL);
120 }
121 _element.data = layer;
122 if (layer) {
123 sp_object_ref(layer, NULL);
124 _layer_release = layer->connectRelease(sigc::hide(sigc::bind(sigc::mem_fun(*this, &CurrentLayer::_setLayer), (SPObject *)NULL)));
125 _layer_modified = layer->connectModified(sigc::hide(sigc::hide(sigc::mem_fun(*this, &CurrentLayer::_emitChanged))));
126 }
127 _emitChanged();
128 }
130 SPObject *StyleSubject::CurrentLayer::_getLayer() const {
131 return static_cast<SPObject *>(_element.data);
132 }
134 GSList *StyleSubject::CurrentLayer::_getLayerSList() const {
135 if (_element.data) {
136 return &_element;
137 } else {
138 return NULL;
139 }
140 }
142 StyleSubject::iterator StyleSubject::CurrentLayer::begin() {
143 return iterator(_getLayerSList());
144 }
146 boost::optional<Geom::Rect> StyleSubject::CurrentLayer::getBounds(SPItem::BBoxType type) {
147 SPObject *layer = _getLayer();
148 if (layer && SP_IS_ITEM(layer)) {
149 return sp_item_bbox_desktop(SP_ITEM(layer), type);
150 } else {
151 return boost::optional<Geom::Rect>();
152 }
153 }
155 int StyleSubject::CurrentLayer::queryStyle(SPStyle *query, int property) {
156 GSList *list = _getLayerSList();
157 if (list) {
158 return sp_desktop_query_style_from_list(list, query, property);
159 } else {
160 return QUERY_STYLE_NOTHING;
161 }
162 }
164 void StyleSubject::CurrentLayer::setCSS(SPCSSAttr *css) {
165 SPObject *layer = _getLayer();
166 if (layer) {
167 sp_desktop_apply_css_recursive(layer, css, true);
168 }
169 }
171 void StyleSubject::CurrentLayer::_afterDesktopSwitch(SPDesktop *desktop) {
172 _layer_switched.disconnect();
173 if (desktop) {
174 _layer_switched = desktop->connectCurrentLayerChanged(sigc::mem_fun(*this, &CurrentLayer::_setLayer));
175 _setLayer(desktop->currentLayer());
176 } else {
177 _setLayer(NULL);
178 }
179 }
181 }
182 }
183 }
185 /*
186 Local Variables:
187 mode:c++
188 c-file-style:"stroustrup"
189 c-file-offsets:((innamespace . 0)(inline-open . 0)(case-label . +))
190 indent-tabs-mode:nil
191 fill-column:99
192 End:
193 */
194 // vim: filetype=cpp:expandtab:shiftwidth=4:tabstop=8:softtabstop=4:encoding=utf-8:textwidth=99 :