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1 : /* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
2 : /*
3 : * This file is part of the LibreOffice project.
4 : *
5 : * This Source Code Form is subject to the terms of the Mozilla Public
6 : * License, v. 2.0. If a copy of the MPL was not distributed with this
7 : * file, You can obtain one at http://mozilla.org/MPL/2.0/.
8 : *
9 : * This file incorporates work covered by the following license notice:
10 : *
11 : * Licensed to the Apache Software Foundation (ASF) under one or more
12 : * contributor license agreements. See the NOTICE file distributed
13 : * with this work for additional information regarding copyright
14 : * ownership. The ASF licenses this file to you under the Apache
15 : * License, Version 2.0 (the "License"); you may not use this file
16 : * except in compliance with the License. You may obtain a copy of
17 : * the License at http://www.apache.org/licenses/LICENSE-2.0 .
18 : */
19 :
20 : #include <svgio/svgreader/svgstylenode.hxx>
21 : #include <svgio/svgreader/svgdocument.hxx>
22 :
23 : namespace svgio
24 : {
25 : namespace svgreader
26 : {
27 2 : SvgStyleNode::SvgStyleNode(
28 : SvgDocument& rDocument,
29 : SvgNode* pParent)
30 : : SvgNode(SVGTokenStyle, rDocument, pParent),
31 : maSvgStyleAttributes(),
32 2 : mbTextCss(false)
33 : {
34 2 : }
35 :
36 6 : SvgStyleNode::~SvgStyleNode()
37 : {
38 6 : while(!maSvgStyleAttributes.empty())
39 : {
40 2 : delete *(maSvgStyleAttributes.end() - 1);
41 2 : maSvgStyleAttributes.pop_back();
42 : }
43 4 : }
44 :
45 : // #i125258# no parent when we are a CssStyle holder to break potential loops because
46 : // when using CssStyles we jump uncontrolled inside the node tree hierarchy
47 2 : bool SvgStyleNode::supportsParentStyle() const
48 : {
49 2 : if(isTextCss())
50 : {
51 2 : return false;
52 : }
53 :
54 : // call parent
55 0 : return SvgNode::supportsParentStyle();
56 : }
57 :
58 2 : void SvgStyleNode::parseAttribute(const OUString& rTokenName, SVGToken aSVGToken, const OUString& aContent)
59 : {
60 : // call parent
61 2 : SvgNode::parseAttribute(rTokenName, aSVGToken, aContent);
62 :
63 : // parse own
64 2 : switch(aSVGToken)
65 : {
66 : case SVGTokenType:
67 : {
68 2 : if(!aContent.isEmpty())
69 : {
70 2 : if(aContent.startsWith("text/css"))
71 : {
72 2 : setTextCss(true);
73 : }
74 : }
75 2 : break;
76 : }
77 : default:
78 : {
79 0 : break;
80 : }
81 : }
82 2 : }
83 :
84 2 : void SvgStyleNode::addCssStyleSheet(const OUString& aSelectors, const SvgStyleAttributes& rNewStyle)
85 : {
86 : // aSelectors: CssStyle selectors, any combination, no comma separations, no spaces at start/end
87 : // rNewStyle: the already preapared style to register on that name
88 2 : if(!aSelectors.isEmpty())
89 : {
90 2 : std::vector< OUString > aSelectorParts;
91 2 : const sal_Int32 nLen(aSelectors.getLength());
92 2 : sal_Int32 nPos(0);
93 4 : OUStringBuffer aToken;
94 :
95 : // split into single tokens (currently only space separator)
96 6 : while(nPos < nLen)
97 : {
98 2 : const sal_Int32 nInitPos(nPos);
99 2 : copyToLimiter(aSelectors, sal_Unicode(' '), nPos, aToken, nLen);
100 2 : skip_char(aSelectors, sal_Unicode(' '), nPos, nLen);
101 2 : const OUString aSelectorPart(aToken.makeStringAndClear().trim());
102 :
103 2 : if(!aSelectorPart.isEmpty())
104 : {
105 2 : aSelectorParts.push_back(aSelectorPart);
106 : }
107 :
108 2 : if(nInitPos == nPos)
109 : {
110 : OSL_ENSURE(false, "Could not interpret on current position (!)");
111 0 : nPos++;
112 : }
113 2 : }
114 :
115 2 : if(aSelectorParts.size())
116 : {
117 2 : OUString aConcatenatedSelector;
118 :
119 : // re-combine without spaces, create a unique name (for now)
120 4 : for(size_t a(0); a < aSelectorParts.size(); a++)
121 : {
122 2 : aConcatenatedSelector += aSelectorParts[a];
123 : }
124 :
125 : // CssStyles in SVG are currently not completely supported; the current idea for
126 : // supporting the needed minimal set is to register CssStyles associated to a string
127 : // which is just the space-char cleaned, concatenated Selectors. The part to 'match'
128 : // these is in fillCssStyleVectorUsingHierarchyAndSelectors. There, the same string is
129 : // built up using the priorities of local CssStyle, Id, Class and other info combined
130 : // with the existing hierarchy. This creates a specificity- and priority-sorted local
131 : // list for each node which is then chained using get/setCssStyleParent.
132 : // The current solution is capable of solving space-separated selectors which can be
133 : // mixed between Id, Class and type specifiers.
134 : // When CssStyles need more specific solving, the start point is here; remember the
135 : // needed infos not in maIdStyleTokenMapperList at the document, but select evtl.
136 : // more specific infos there in a class capable of handling more complex matchings.
137 : // Additionally fillCssStyleVector (or the mechanism above that when a linked list of
138 : // SvgStyleAttributes will not do it) will have to be adapted to make use of it.
139 :
140 : // register new style at document for (evtl. concatenated) stylename
141 2 : const_cast< SvgDocument& >(getDocument()).addSvgStyleAttributesToMapper(aConcatenatedSelector, rNewStyle);
142 2 : }
143 : }
144 2 : }
145 :
146 2 : void SvgStyleNode::addCssStyleSheet(const OUString& aSelectors, const OUString& aContent)
147 : {
148 : // aSelectors: possible comma-separated list of CssStyle definitions, no spaces at start/end
149 : // aContent: the svg style definitions as string
150 2 : if(!aSelectors.isEmpty() && !aContent.isEmpty())
151 : {
152 : // create new style and add to local list (for ownership control)
153 2 : SvgStyleAttributes* pNewStyle = new SvgStyleAttributes(*this);
154 2 : maSvgStyleAttributes.push_back(pNewStyle);
155 :
156 : // fill with content
157 2 : pNewStyle->readCssStyle(aContent);
158 :
159 : // comma-separated split (Css abbreviation for same style for multiple selectors)
160 2 : const sal_Int32 nLen(aSelectors.getLength());
161 2 : sal_Int32 nPos(0);
162 2 : OUStringBuffer aToken;
163 :
164 6 : while(nPos < nLen)
165 : {
166 2 : const sal_Int32 nInitPos(nPos);
167 2 : copyToLimiter(aSelectors, sal_Unicode(','), nPos, aToken, nLen);
168 2 : skip_char(aSelectors, sal_Unicode(' '), sal_Unicode(','), nPos, nLen);
169 :
170 2 : const OUString aSingleName(aToken.makeStringAndClear().trim());
171 :
172 2 : if(aSingleName.getLength())
173 : {
174 2 : addCssStyleSheet(aSingleName, *pNewStyle);
175 : }
176 :
177 2 : if(nInitPos == nPos)
178 : {
179 : OSL_ENSURE(false, "Could not interpret on current position (!)");
180 0 : nPos++;
181 : }
182 4 : }
183 : }
184 2 : }
185 :
186 2 : void SvgStyleNode::addCssStyleSheet(const OUString& aSelectorsAndContent)
187 : {
188 2 : const sal_Int32 nLen(aSelectorsAndContent.getLength());
189 :
190 2 : if(nLen)
191 : {
192 2 : sal_Int32 nPos(0);
193 2 : OUStringBuffer aToken;
194 :
195 6 : while(nPos < nLen)
196 : {
197 : // read the full selectors (may be multiple, comma-separated)
198 2 : const sal_Int32 nInitPos(nPos);
199 2 : skip_char(aSelectorsAndContent, sal_Unicode(' '), nPos, nLen);
200 2 : copyToLimiter(aSelectorsAndContent, sal_Unicode('{'), nPos, aToken, nLen);
201 2 : skip_char(aSelectorsAndContent, sal_Unicode(' '), sal_Unicode('{'), nPos, nLen);
202 :
203 2 : const OUString aSelectors(aToken.makeStringAndClear().trim());
204 4 : OUString aContent;
205 :
206 2 : if(!aSelectors.isEmpty() && nPos < nLen)
207 : {
208 : // isolate content as text, embraced by '{' and '}'
209 2 : copyToLimiter(aSelectorsAndContent, sal_Unicode('}'), nPos, aToken, nLen);
210 2 : skip_char(aSelectorsAndContent, sal_Unicode(' '), sal_Unicode('}'), nPos, nLen);
211 :
212 2 : aContent = aToken.makeStringAndClear().trim();
213 : }
214 :
215 2 : if(!aSelectors.isEmpty() && !aContent.isEmpty())
216 : {
217 2 : addCssStyleSheet(aSelectors, aContent);
218 : }
219 :
220 2 : if(nInitPos == nPos)
221 : {
222 : OSL_ENSURE(false, "Could not interpret on current position (!)");
223 0 : nPos++;
224 : }
225 4 : }
226 : }
227 2 : }
228 :
229 : } // end of namespace svgreader
230 : } // end of namespace svgio
231 :
232 : /* vim:set shiftwidth=4 softtabstop=4 expandtab: */
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