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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 : #ifndef INCLUDED_SDEXT_SOURCE_PDFIMPORT_TREE_GENERICELEMENTS_HXX
21 : #define INCLUDED_SDEXT_SOURCE_PDFIMPORT_TREE_GENERICELEMENTS_HXX
22 :
23 : #include "pdfihelper.hxx"
24 : #include "treevisiting.hxx"
25 :
26 : #include <com/sun/star/task/XStatusIndicator.hpp>
27 : #include <com/sun/star/uno/XComponentContext.hpp>
28 : #include <basegfx/polygon/b2dpolypolygon.hxx>
29 : #include <basegfx/range/b2drange.hxx>
30 : #include <rtl/ustring.hxx>
31 : #include <rtl/ustrbuf.hxx>
32 :
33 : #include <list>
34 :
35 : namespace pdfi
36 : {
37 : class XmlEmitter;
38 : class StyleContainer;
39 : class ImageContainer;
40 : class PDFIProcessor;
41 : class ElementFactory;
42 :
43 :
44 0 : struct EmitContext
45 : {
46 0 : EmitContext(
47 : XmlEmitter& _rEmitter,
48 : StyleContainer& _rStyles,
49 : ImageContainer& _rImages,
50 : PDFIProcessor& _rProcessor,
51 : const com::sun::star::uno::Reference<
52 : com::sun::star::task::XStatusIndicator>& _xStatusIndicator,
53 : com::sun::star::uno::Reference< com::sun::star::uno::XComponentContext > xContext)
54 : :
55 : rEmitter(_rEmitter),
56 : rStyles(_rStyles),
57 : rImages(_rImages),
58 : rProcessor(_rProcessor),
59 : xStatusIndicator(_xStatusIndicator),
60 0 : m_xContext(xContext)
61 0 : {}
62 :
63 : XmlEmitter& rEmitter;
64 : StyleContainer& rStyles;
65 : ImageContainer& rImages;
66 : PDFIProcessor& rProcessor;
67 : com::sun::star::uno::Reference<
68 : com::sun::star::task::XStatusIndicator> xStatusIndicator;
69 : com::sun::star::uno::Reference<
70 : com::sun::star::uno::XComponentContext > m_xContext;
71 : };
72 :
73 : struct Element : public ElementTreeVisitable
74 : {
75 : protected:
76 0 : Element( Element* pParent )
77 0 : : x( 0 ), y( 0 ), w( 0 ), h( 0 ), StyleId( -1 ), Parent( pParent )
78 : {
79 0 : if( pParent )
80 0 : pParent->Children.push_back( this );
81 0 : }
82 :
83 : public:
84 : virtual ~Element();
85 :
86 : /// Apply visitor to all children
87 : void applyToChildren( ElementTreeVisitor& );
88 : /// Union element geometry with given element
89 : void updateGeometryWith( const Element* pMergeFrom );
90 :
91 : #if OSL_DEBUG_LEVEL > 1
92 : // xxx refac TODO: move code to visitor
93 : virtual void emitStructure( int nLevel );
94 : #endif
95 : /** el must be a valid dereferencable iterator of el->Parent->Children
96 : pNewParent must not be NULL
97 : */
98 : static void setParent( std::list<Element*>::iterator& el, Element* pNewParent );
99 :
100 : double x, y, w, h;
101 : sal_Int32 StyleId;
102 : Element* Parent;
103 : std::list<Element*> Children;
104 : };
105 :
106 0 : struct ListElement : public Element
107 : {
108 0 : ListElement() : Element( NULL ) {}
109 : // ElementTreeVisitable
110 : virtual void visitedBy( ElementTreeVisitor&, const std::list< Element* >::const_iterator& ) SAL_OVERRIDE;
111 : };
112 :
113 0 : struct HyperlinkElement : public Element
114 : {
115 : friend class ElementFactory;
116 : protected:
117 0 : HyperlinkElement( Element* pParent, const OUString& rURI )
118 0 : : Element( pParent ), URI( rURI ) {}
119 : public:
120 : // ElementTreeVisitable
121 : virtual void visitedBy( ElementTreeVisitor&, const std::list< Element* >::const_iterator& ) SAL_OVERRIDE;
122 :
123 : OUString URI;
124 : };
125 :
126 0 : struct GraphicalElement : public Element
127 : {
128 : protected:
129 0 : GraphicalElement( Element* pParent, sal_Int32 nGCId )
130 0 : : Element( pParent ), GCId( nGCId ), MirrorVertical( false ), IsForText (false) {}
131 :
132 : public:
133 : sal_Int32 GCId;
134 : bool MirrorVertical;
135 : bool IsForText;
136 : };
137 :
138 0 : struct DrawElement : public GraphicalElement
139 : {
140 : protected:
141 0 : DrawElement( Element* pParent, sal_Int32 nGCId )
142 0 : : GraphicalElement( pParent, nGCId ), isCharacter(false), ZOrder(0) {}
143 :
144 : public:
145 : bool isCharacter;
146 : sal_Int32 ZOrder;
147 : };
148 :
149 0 : struct FrameElement : public DrawElement
150 : {
151 : friend class ElementFactory;
152 : protected:
153 0 : FrameElement( Element* pParent, sal_Int32 nGCId )
154 0 : : DrawElement( pParent, nGCId ) {}
155 :
156 : public:
157 : // ElementTreeVisitable
158 : virtual void visitedBy( ElementTreeVisitor&, const std::list< Element* >::const_iterator& ) SAL_OVERRIDE;
159 : };
160 :
161 0 : struct TextElement : public GraphicalElement
162 : {
163 : friend class ElementFactory;
164 : protected:
165 0 : TextElement( Element* pParent, sal_Int32 nGCId, sal_Int32 nFontId )
166 0 : : GraphicalElement( pParent, nGCId ), FontId( nFontId ) {}
167 :
168 : public:
169 : // ElementTreeVisitable
170 : virtual void visitedBy( ElementTreeVisitor&, const std::list< Element* >::const_iterator& ) SAL_OVERRIDE;
171 :
172 : OUStringBuffer Text;
173 : sal_Int32 FontId;
174 : };
175 :
176 0 : struct ParagraphElement : public Element
177 : {
178 : friend class ElementFactory;
179 : protected:
180 0 : ParagraphElement( Element* pParent ) : Element( pParent ), Type( Normal ), bRtl( false ) {}
181 :
182 : public:
183 : // ElementTreeVisitable
184 : virtual void visitedBy( ElementTreeVisitor&, const std::list< Element* >::const_iterator& rParentIt ) SAL_OVERRIDE;
185 :
186 : // returns true only if only a single line is contained
187 : bool isSingleLined( PDFIProcessor& rProc ) const;
188 : // returns the highest line height of the contained textelements
189 : // line height is font height if the text element is itself multilined
190 : double getLineHeight( PDFIProcessor& rProc ) const;
191 : // returns the first text element child; does not recurse through subparagraphs
192 : TextElement* getFirstTextChild() const;
193 :
194 : enum ParagraphType { Normal, Headline };
195 : ParagraphType Type;
196 : bool bRtl;
197 : };
198 :
199 0 : struct PolyPolyElement : public DrawElement
200 : {
201 : friend class ElementFactory;
202 : protected:
203 : PolyPolyElement( Element* pParent, sal_Int32 nGCId,
204 : const basegfx::B2DPolyPolygon& rPolyPoly,
205 : sal_Int8 nAction );
206 : public:
207 : // ElementTreeVisitable
208 : virtual void visitedBy( ElementTreeVisitor&, const std::list< Element* >::const_iterator& rParentIt ) SAL_OVERRIDE;
209 :
210 : void updateGeometry();
211 :
212 : #if OSL_DEBUG_LEVEL > 1
213 : virtual void emitStructure( int nLevel );
214 : #endif
215 :
216 : basegfx::B2DPolyPolygon PolyPoly;
217 : sal_Int8 Action;
218 : };
219 :
220 0 : struct ImageElement : public DrawElement
221 : {
222 : friend class ElementFactory;
223 : protected:
224 0 : ImageElement( Element* pParent, sal_Int32 nGCId, ImageId nImage )
225 0 : : DrawElement( pParent, nGCId ), Image( nImage ) {}
226 :
227 : public:
228 : // ElementTreeVisitable
229 : virtual void visitedBy( ElementTreeVisitor&, const std::list< Element* >::const_iterator& ) SAL_OVERRIDE;
230 :
231 : ImageId Image;
232 : };
233 :
234 : struct PageElement : public Element
235 : {
236 : friend class ElementFactory;
237 : protected:
238 0 : PageElement( Element* pParent, sal_Int32 nPageNr )
239 : : Element( pParent ), PageNumber( nPageNr ), Hyperlinks(),
240 : TopMargin( 0.0 ), BottomMargin( 0.0 ), LeftMargin( 0.0 ), RightMargin( 0.0 ),
241 0 : HeaderElement( NULL ), FooterElement( NULL )
242 0 : {}
243 : private:
244 : // helper method for resolveHyperlinks
245 : bool resolveHyperlink( std::list<Element*>::iterator link_it, std::list<Element*>& rElements );
246 : public:
247 : virtual ~PageElement();
248 :
249 : // ElementTreeVisitable
250 : virtual void visitedBy( ElementTreeVisitor&, const std::list< Element* >::const_iterator& rParentIt ) SAL_OVERRIDE;
251 :
252 : void emitPageAnchoredElements( EmitContext& rEmitContext );
253 : static void updateParagraphGeometry( Element* pEle );
254 : void resolveHyperlinks();
255 : void resolveFontStyles( PDFIProcessor& rProc );
256 : void resolveUnderlines( PDFIProcessor& rProc );
257 :
258 : sal_Int32 PageNumber;
259 : ListElement Hyperlinks; // contains not yet realized links on this page
260 : double TopMargin;
261 : double BottomMargin;
262 : double LeftMargin;
263 : double RightMargin;
264 : Element* HeaderElement;
265 : Element* FooterElement;
266 : };
267 :
268 : struct DocumentElement : public Element
269 : {
270 : friend class ElementFactory;
271 : protected:
272 0 : DocumentElement() : Element( NULL ) {}
273 : public:
274 : virtual ~DocumentElement();
275 :
276 : // ElementTreeVisitable
277 : virtual void visitedBy( ElementTreeVisitor&, const std::list< Element* >::const_iterator& ) SAL_OVERRIDE;
278 :
279 : };
280 :
281 : // this class is the differentiator of document types: it will create
282 : // Element objects with an optimize() method suitable for the document type
283 : class ElementFactory
284 : {
285 : public:
286 0 : ElementFactory() {}
287 : virtual ~ElementFactory();
288 :
289 0 : virtual HyperlinkElement* createHyperlinkElement( Element* pParent, const OUString& rURI )
290 0 : { return new HyperlinkElement( pParent, rURI ); }
291 :
292 0 : virtual TextElement* createTextElement( Element* pParent, sal_Int32 nGCId, sal_Int32 nFontId )
293 0 : { return new TextElement( pParent, nGCId, nFontId ); }
294 0 : virtual ParagraphElement* createParagraphElement( Element* pParent )
295 0 : { return new ParagraphElement( pParent ); }
296 :
297 0 : virtual FrameElement* createFrameElement( Element* pParent, sal_Int32 nGCId )
298 0 : { return new FrameElement( pParent, nGCId ); }
299 : virtual PolyPolyElement*
300 0 : createPolyPolyElement( Element* pParent,
301 : sal_Int32 nGCId,
302 : const basegfx::B2DPolyPolygon& rPolyPoly,
303 : sal_Int8 nAction)
304 0 : { return new PolyPolyElement( pParent, nGCId, rPolyPoly, nAction ); }
305 0 : virtual ImageElement* createImageElement( Element* pParent, sal_Int32 nGCId, ImageId nImage )
306 0 : { return new ImageElement( pParent, nGCId, nImage ); }
307 :
308 0 : virtual PageElement* createPageElement( Element* pParent,
309 : sal_Int32 nPageNr )
310 0 : { return new PageElement( pParent, nPageNr ); }
311 0 : virtual DocumentElement* createDocumentElement()
312 0 : { return new DocumentElement(); }
313 : };
314 : }
315 :
316 : #endif
317 :
318 : /* vim:set shiftwidth=4 softtabstop=4 expandtab: */
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