1 files changed, 189 insertions, 0 deletions
diff --git a/src/ui/widget/style-subject.cpp b/src/ui/widget/style-subject.cpp
new file mode 100644
index 0000000..9c30a42
--- /dev/null
+++ b/src/ui/widget/style-subject.cpp
@@ -0,0 +1,189 @@
+// SPDX-License-Identifier: GPL-2.0-or-later
+/*
+ * Copyright (C) 2007 MenTaLguY <mental@rydia.net>
+ *   Abhishek Sharma
+ *
+ * Released under GNU GPL v2+, read the file 'COPYING' for more information.
+ */
+
+#include "style-subject.h"
+
+#include "desktop.h"
+#include "desktop-style.h"
+#include "selection.h"
+
+#include "xml/sp-css-attr.h"
+
+namespace Inkscape {
+namespace UI {
+namespace Widget {
+
+StyleSubject::StyleSubject() : _desktop(nullptr) {
+}
+
+StyleSubject::~StyleSubject() {
+    setDesktop(nullptr);
+}
+
+void StyleSubject::setDesktop(SPDesktop *desktop) {
+    if (desktop != _desktop) {
+        if (desktop) {
+            GC::anchor(desktop);
+        }
+        if (_desktop) {
+            GC::release(_desktop);
+        }
+        _desktop = desktop;
+        _afterDesktopSwitch(desktop);
+        _emitChanged();
+    }
+}
+
+StyleSubject::Selection::Selection() = default;
+
+StyleSubject::Selection::~Selection() = default;
+
+Inkscape::Selection *StyleSubject::Selection::_getSelection() const {
+    SPDesktop *desktop = getDesktop();
+    if (desktop) {
+        return desktop->getSelection();
+    } else {
+        return nullptr;
+    }
+}
+
+std::vector<SPObject*> StyleSubject::Selection::list() {
+    Inkscape::Selection *selection = _getSelection();
+    if(selection) {
+        return std::vector<SPObject *>(selection->objects().begin(), selection->objects().end());
+    }
+
+    return std::vector<SPObject*>();
+}
+
+Geom::OptRect StyleSubject::Selection::getBounds(SPItem::BBoxType type) {
+    Inkscape::Selection *selection = _getSelection();
+    if (selection) {
+        return selection->bounds(type);
+    } else {
+        return Geom::OptRect();
+    }
+}
+
+int StyleSubject::Selection::queryStyle(SPStyle *query, int property) {
+    SPDesktop *desktop = getDesktop();
+    if (desktop) {
+        return sp_desktop_query_style(desktop, query, property);
+    } else {
+        return QUERY_STYLE_NOTHING;
+    }
+}
+
+void StyleSubject::Selection::_afterDesktopSwitch(SPDesktop *desktop) {
+    _sel_changed.disconnect();
+    _subsel_changed.disconnect();
+    _sel_modified.disconnect();
+    if (desktop) {
+        _subsel_changed = desktop->connectToolSubselectionChanged(sigc::hide(sigc::mem_fun(*this, &Selection::_emitChanged)));
+        Inkscape::Selection *selection = desktop->getSelection();
+        if (selection) {
+            _sel_changed = selection->connectChanged(sigc::hide(sigc::mem_fun(*this, &Selection::_emitChanged)));
+            _sel_modified = selection->connectModified(sigc::mem_fun(*this, &Selection::_emitModified));
+        }
+    }
+}
+
+void StyleSubject::Selection::setCSS(SPCSSAttr *css) {
+    SPDesktop *desktop = getDesktop();
+    if (desktop) {
+        sp_desktop_set_style(desktop, css);
+    }
+}
+
+StyleSubject::CurrentLayer::CurrentLayer() {
+    _element = nullptr;
+}
+
+StyleSubject::CurrentLayer::~CurrentLayer() = default;
+
+void StyleSubject::CurrentLayer::_setLayer(SPObject *layer) {
+    _layer_release.disconnect();
+    _layer_modified.disconnect();
+    if (_element) {
+        sp_object_unref(_element, nullptr);
+    }
+    _element = layer;
+    if (layer) {
+        sp_object_ref(layer, nullptr);
+        _layer_release = layer->connectRelease(sigc::hide(sigc::bind(sigc::mem_fun(*this, &CurrentLayer::_setLayer), (SPObject *)nullptr)));
+        _layer_modified = layer->connectModified(sigc::hide(sigc::hide(sigc::mem_fun(*this, &CurrentLayer::_emitChanged))));
+    }
+    _emitChanged();
+}
+
+SPObject *StyleSubject::CurrentLayer::_getLayer() const {
+    return _element;
+}
+
+SPObject *StyleSubject::CurrentLayer::_getLayerSList() const {
+        return _element;
+
+}
+
+std::vector<SPObject*> StyleSubject::CurrentLayer::list(){
+    std::vector<SPObject*> list;
+    list.push_back(_element);
+    return list;
+}
+
+Geom::OptRect StyleSubject::CurrentLayer::getBounds(SPItem::BBoxType type) {
+    SPObject *layer = _getLayer();
+    if (layer && SP_IS_ITEM(layer)) {
+        return SP_ITEM(layer)->desktopBounds(type);
+    } else {
+        return Geom::OptRect();
+    }
+}
+
+int StyleSubject::CurrentLayer::queryStyle(SPStyle *query, int property) {
+	std::vector<SPItem*> list;
+    SPObject* i=_getLayerSList();
+    if (i) {
+		list.push_back((SPItem*)i);
+        return sp_desktop_query_style_from_list(list, query, property);
+    } else {
+        return QUERY_STYLE_NOTHING;
+    }
+}
+
+void StyleSubject::CurrentLayer::setCSS(SPCSSAttr *css) {
+    SPObject *layer = _getLayer();
+    if (layer) {
+        sp_desktop_apply_css_recursive(layer, css, true);
+    }
+}
+
+void StyleSubject::CurrentLayer::_afterDesktopSwitch(SPDesktop *desktop) {
+    _layer_switched.disconnect();
+    if (desktop) {
+        _layer_switched = desktop->connectCurrentLayerChanged(sigc::mem_fun(*this, &CurrentLayer::_setLayer));
+        _setLayer(desktop->currentLayer());
+    } else {
+        _setLayer(nullptr);
+    }
+}
+
+}
+}
+}
+
+/*
+  Local Variables:
+  mode:c++
+  c-file-style:"stroustrup"
+  c-file-offsets:((innamespace . 0)(inline-open . 0)(case-label . +))
+  indent-tabs-mode:nil
+  fill-column:99
+  End:
+*/
+// vim: filetype=cpp:expandtab:shiftwidth=4:tabstop=8:softtabstop=4:fileencoding=utf-8:textwidth=99 :