Qt 4.8
qsvgstructure.cpp
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41 
42 #include "qsvgstructure_p.h"
43 
44 #ifndef QT_NO_SVG
45 
46 #include "qsvgnode_p.h"
47 #include "qsvgstyle_p.h"
48 #include "qsvgtinydocument_p.h"
49 
50 #include "qpainter.h"
51 #include "qlocale.h"
52 #include "qdebug.h"
53 
54 QT_BEGIN_NAMESPACE
55 
56 QSvgG::QSvgG(QSvgNode *parent)
57  : QSvgStructureNode(parent)
58 {
59 
60 }
61 
62 QSvgStructureNode::~QSvgStructureNode()
63 {
64  qDeleteAll(m_renderers);
65 }
66 
67 void QSvgG::draw(QPainter *p, QSvgExtraStates &states)
68 {
69  QList<QSvgNode*>::iterator itr = m_renderers.begin();
70  applyStyle(p, states);
71 
72  while (itr != m_renderers.end()) {
73  QSvgNode *node = *itr;
74  if ((node->isVisible()) && (node->displayMode() != QSvgNode::NoneMode))
75  node->draw(p, states);
76  ++itr;
77  }
78  revertStyle(p, states);
79 }
80 
81 QSvgNode::Type QSvgG::type() const
82 {
83  return G;
84 }
85 
86 QSvgStructureNode::QSvgStructureNode(QSvgNode *parent)
87  :QSvgNode(parent)
88 {
89 
90 }
91 
92 QSvgNode * QSvgStructureNode::scopeNode(const QString &id) const
93 {
94  QSvgTinyDocument *doc = document();
95  return doc ? doc->namedNode(id) : 0;
96 }
97 
98 void QSvgStructureNode::addChild(QSvgNode *child, const QString &id)
99 {
100  m_renderers.append(child);
101 
102  if (id.isEmpty())
103  return; //we can't add it to scope without id
104 
105  QSvgTinyDocument *doc = document();
106  if (doc)
107  doc->addNamedNode(id, child);
108 }
109 
110 QSvgDefs::QSvgDefs(QSvgNode *parent)
111  : QSvgStructureNode(parent)
112 {
113 }
114 
115 void QSvgDefs::draw(QPainter *, QSvgExtraStates &)
116 {
117  //noop
118 }
119 
120 QSvgNode::Type QSvgDefs::type() const
121 {
122  return DEFS;
123 }
124 
125 /*
126  Below is a lookup function based on the gperf output using the following set:
127 
128  http://www.w3.org/Graphics/SVG/feature/1.2/#SVG
129  http://www.w3.org/Graphics/SVG/feature/1.2/#SVG-static
130  http://www.w3.org/Graphics/SVG/feature/1.2/#CoreAttribute
131  http://www.w3.org/Graphics/SVG/feature/1.2/#Structure
132  http://www.w3.org/Graphics/SVG/feature/1.2/#ConditionalProcessing
133  http://www.w3.org/Graphics/SVG/feature/1.2/#ConditionalProcessingAttribute
134  http://www.w3.org/Graphics/SVG/feature/1.2/#Image
135  http://www.w3.org/Graphics/SVG/feature/1.2/#Prefetch
136  http://www.w3.org/Graphics/SVG/feature/1.2/#Shape
137  http://www.w3.org/Graphics/SVG/feature/1.2/#Text
138  http://www.w3.org/Graphics/SVG/feature/1.2/#PaintAttribute
139  http://www.w3.org/Graphics/SVG/feature/1.2/#OpacityAttribute
140  http://www.w3.org/Graphics/SVG/feature/1.2/#GraphicsAttribute
141  http://www.w3.org/Graphics/SVG/feature/1.2/#Gradient
142  http://www.w3.org/Graphics/SVG/feature/1.2/#SolidColor
143  http://www.w3.org/Graphics/SVG/feature/1.2/#XlinkAttribute
144  http://www.w3.org/Graphics/SVG/feature/1.2/#ExternalResourcesRequiredAttribute
145  http://www.w3.org/Graphics/SVG/feature/1.2/#Font
146  http://www.w3.org/Graphics/SVG/feature/1.2/#Hyperlinking
147  http://www.w3.org/Graphics/SVG/feature/1.2/#Extensibility
148 */
149 
150 // ----- begin of generated code -----
151 
152 /* C code produced by gperf version 3.0.2 */
153 /* Command-line: gperf -c -L c svg */
154 /* Computed positions: -k'45-46' */
155 
156 #if !((' ' == 32) && ('!' == 33) && ('"' == 34) && ('#' == 35) \
157  && ('%' == 37) && ('&' == 38) && ('\'' == 39) && ('(' == 40) \
158  && (')' == 41) && ('*' == 42) && ('+' == 43) && (',' == 44) \
159  && ('-' == 45) && ('.' == 46) && ('/' == 47) && ('0' == 48) \
160  && ('1' == 49) && ('2' == 50) && ('3' == 51) && ('4' == 52) \
161  && ('5' == 53) && ('6' == 54) && ('7' == 55) && ('8' == 56) \
162  && ('9' == 57) && (':' == 58) && (';' == 59) && ('<' == 60) \
163  && ('=' == 61) && ('>' == 62) && ('?' == 63) && ('A' == 65) \
164  && ('B' == 66) && ('C' == 67) && ('D' == 68) && ('E' == 69) \
165  && ('F' == 70) && ('G' == 71) && ('H' == 72) && ('I' == 73) \
166  && ('J' == 74) && ('K' == 75) && ('L' == 76) && ('M' == 77) \
167  && ('N' == 78) && ('O' == 79) && ('P' == 80) && ('Q' == 81) \
168  && ('R' == 82) && ('S' == 83) && ('T' == 84) && ('U' == 85) \
169  && ('V' == 86) && ('W' == 87) && ('X' == 88) && ('Y' == 89) \
170  && ('Z' == 90) && ('[' == 91) && ('\\' == 92) && (']' == 93) \
171  && ('^' == 94) && ('_' == 95) && ('a' == 97) && ('b' == 98) \
172  && ('c' == 99) && ('d' == 100) && ('e' == 101) && ('f' == 102) \
173  && ('g' == 103) && ('h' == 104) && ('i' == 105) && ('j' == 106) \
174  && ('k' == 107) && ('l' == 108) && ('m' == 109) && ('n' == 110) \
175  && ('o' == 111) && ('p' == 112) && ('q' == 113) && ('r' == 114) \
176  && ('s' == 115) && ('t' == 116) && ('u' == 117) && ('v' == 118) \
177  && ('w' == 119) && ('x' == 120) && ('y' == 121) && ('z' == 122) \
178  && ('{' == 123) && ('|' == 124) && ('}' == 125) && ('~' == 126))
179 /* The character set is not based on ISO-646. */
180 #error "gperf generated tables don't work with this execution character set. Please report a bug to <bug-gnu-gperf@gnu.org>."
181 #endif
182 
183 enum {
184  TOTAL_KEYWORDS = 20,
185  MIN_WORD_LENGTH = 47,
186  MAX_WORD_LENGTH = 78,
187  MIN_HASH_VALUE = 48,
188  MAX_HASH_VALUE = 88
189 };
190 /* maximum key range = 41, duplicates = 0 */
191 
192 inline static bool isSupportedSvgFeature(const QString &str)
193 {
194  static const unsigned char asso_values[] = {
195  89, 89, 89, 89, 89, 89, 89, 89, 89, 89,
196  89, 89, 89, 89, 89, 89, 89, 89, 89, 89,
197  89, 89, 89, 89, 89, 89, 89, 89, 89, 89,
198  89, 89, 89, 89, 89, 89, 89, 89, 89, 89,
199  89, 89, 89, 89, 89, 89, 89, 89, 89, 89,
200  89, 89, 89, 89, 89, 89, 89, 89, 89, 89,
201  89, 89, 89, 89, 89, 89, 89, 0, 89, 5,
202  15, 5, 0, 10, 89, 89, 89, 89, 89, 0,
203  15, 89, 89, 0, 0, 89, 5, 89, 0, 89,
204  89, 89, 89, 89, 89, 89, 89, 0, 89, 89,
205  89, 0, 89, 89, 0, 89, 89, 89, 0, 5,
206  89, 0, 0, 89, 5, 89, 0, 89, 89, 89,
207  5, 0, 89, 89, 89, 89, 89, 89, 89, 89,
208  89, 89, 89, 89, 89, 89, 89, 89, 89, 89,
209  89, 89, 89, 89, 89, 89, 89, 89, 89, 89,
210  89, 89, 89, 89, 89, 89, 89, 89, 89, 89,
211  89, 89, 89, 89, 89, 89, 89, 89, 89, 89,
212  89, 89, 89, 89, 89, 89, 89, 89, 89, 89,
213  89, 89, 89, 89, 89, 89, 89, 89, 89, 89,
214  89, 89, 89, 89, 89, 89, 89, 89, 89, 89,
215  89, 89, 89, 89, 89, 89, 89, 89, 89, 89,
216  89, 89, 89, 89, 89, 89, 89, 89, 89, 89,
217  89, 89, 89, 89, 89, 89, 89, 89, 89, 89,
218  89, 89, 89, 89, 89, 89, 89, 89, 89, 89,
219  89, 89, 89, 89, 89, 89, 89, 89, 89, 89,
220  89, 89, 89, 89, 89, 89
221  };
222 
223  static const char * wordlist[] = {
224  "", "", "", "", "", "", "", "", "",
225  "", "", "", "", "", "", "", "", "",
226  "", "", "", "", "", "", "", "", "",
227  "", "", "", "", "", "", "", "", "",
228  "", "", "", "", "", "", "", "", "",
229  "", "", "",
230  "http://www.w3.org/Graphics/SVG/feature/1.2/#Text",
231  "http://www.w3.org/Graphics/SVG/feature/1.2/#Shape",
232  "", "",
233  "http://www.w3.org/Graphics/SVG/feature/1.2/#SVG",
234  "http://www.w3.org/Graphics/SVG/feature/1.2/#Structure",
235  "http://www.w3.org/Graphics/SVG/feature/1.2/#SolidColor",
236  "",
237  "http://www.w3.org/Graphics/SVG/feature/1.2/#Hyperlinking",
238  "http://www.w3.org/Graphics/SVG/feature/1.2/#CoreAttribute",
239  "http://www.w3.org/Graphics/SVG/feature/1.2/#XlinkAttribute",
240  "http://www.w3.org/Graphics/SVG/feature/1.2/#SVG-static",
241  "http://www.w3.org/Graphics/SVG/feature/1.2/#OpacityAttribute",
242  "",
243  "http://www.w3.org/Graphics/SVG/feature/1.2/#Gradient",
244  "http://www.w3.org/Graphics/SVG/feature/1.2/#Font",
245  "http://www.w3.org/Graphics/SVG/feature/1.2/#Image",
246  "http://www.w3.org/Graphics/SVG/feature/1.2/#ConditionalProcessing",
247  "",
248  "http://www.w3.org/Graphics/SVG/feature/1.2/#Extensibility",
249  "", "", "",
250  "http://www.w3.org/Graphics/SVG/feature/1.2/#GraphicsAttribute",
251  "http://www.w3.org/Graphics/SVG/feature/1.2/#Prefetch",
252  "http://www.w3.org/Graphics/SVG/feature/1.2/#PaintAttribute",
253  "http://www.w3.org/Graphics/SVG/feature/1.2/#ConditionalProcessingAttribute",
254  "", "", "", "", "", "", "", "", "",
255  "", "", "", "",
256  "http://www.w3.org/Graphics/SVG/feature/1.2/#ExternalResourcesRequiredAttribute"
257  };
258 
259  if (str.length() <= MAX_WORD_LENGTH && str.length() >= MIN_WORD_LENGTH) {
260  const int key = str.length()
261  + asso_values[str.at(45).unicode()]
262  + asso_values[str.at(44).unicode()];
263  if (key <= MAX_HASH_VALUE && key >= 0)
264  return str == QLatin1String(wordlist[key]);
265  }
266  return false;
267 }
268 
269 // ----- end of generated code -----
270 
271 static inline bool isSupportedSvgExtension(const QString &)
272 {
273  return false;
274 }
275 
276 
277 QSvgSwitch::QSvgSwitch(QSvgNode *parent)
278  : QSvgStructureNode(parent)
279 {
280  init();
281 }
282 
283 void QSvgSwitch::draw(QPainter *p, QSvgExtraStates &states)
284 {
285  QList<QSvgNode*>::iterator itr = m_renderers.begin();
286  applyStyle(p, states);
287 
288  while (itr != m_renderers.end()) {
289  QSvgNode *node = *itr;
290  if (node->isVisible() && (node->displayMode() != QSvgNode::NoneMode)) {
291  const QStringList &features = node->requiredFeatures();
292  const QStringList &extensions = node->requiredExtensions();
293  const QStringList &languages = node->requiredLanguages();
294  const QStringList &formats = node->requiredFormats();
295  const QStringList &fonts = node->requiredFonts();
296 
297  bool okToRender = true;
298  if (!features.isEmpty()) {
299  QStringList::const_iterator sitr = features.constBegin();
300  for (; sitr != features.constEnd(); ++sitr) {
301  if (!isSupportedSvgFeature(*sitr)) {
302  okToRender = false;
303  break;
304  }
305  }
306  }
307 
308  if (okToRender && !extensions.isEmpty()) {
309  QStringList::const_iterator sitr = extensions.constBegin();
310  for (; sitr != extensions.constEnd(); ++sitr) {
311  if (!isSupportedSvgExtension(*sitr)) {
312  okToRender = false;
313  break;
314  }
315  }
316  }
317 
318  if (okToRender && !languages.isEmpty()) {
319  QStringList::const_iterator sitr = languages.constBegin();
320  okToRender = false;
321  for (; sitr != languages.constEnd(); ++sitr) {
322  if ((*sitr).startsWith(m_systemLanguagePrefix)) {
323  okToRender = true;
324  break;
325  }
326  }
327  }
328 
329  if (okToRender && !formats.isEmpty()) {
330  okToRender = false;
331  }
332 
333  if (okToRender && !fonts.isEmpty()) {
334  okToRender = false;
335  }
336 
337  if (okToRender) {
338  node->draw(p, states);
339  break;
340  }
341  }
342  ++itr;
343  }
344  revertStyle(p, states);
345 }
346 
347 QSvgNode::Type QSvgSwitch::type() const
348 {
349  return SWITCH;
350 }
351 
352 void QSvgSwitch::init()
353 {
354  QLocale locale;
355  m_systemLanguage = locale.name().replace(QLatin1Char('_'), QLatin1Char('-'));
356  int idx = m_systemLanguage.indexOf(QLatin1Char('-'));
357  m_systemLanguagePrefix = m_systemLanguage.mid(0, idx);
358 }
359 
360 QRectF QSvgStructureNode::bounds(QPainter *p, QSvgExtraStates &states) const
361 {
362  QRectF bounds;
363  foreach(QSvgNode *node, m_renderers)
364  bounds |= node->transformedBounds(p, states);
365  return bounds;
366 }
367 
368 QSvgNode * QSvgStructureNode::previousSiblingNode(QSvgNode *n) const
369 {
370  QSvgNode *prev = 0;
371  QList<QSvgNode*>::const_iterator itr = m_renderers.constBegin();
372  for (; itr != m_renderers.constEnd(); ++itr) {
373  QSvgNode *node = *itr;
374  if (node == n)
375  return prev;
376  prev = node;
377  }
378  return prev;
379 }
380 
381 QT_END_NAMESPACE
382 
383 #endif // QT_NO_SVG
QPainter
The QPainter class performs low-level painting on widgets and other paint devices.
Definition: qpainter.h:86
QSvgNode::transformedBounds
virtual QRectF transformedBounds(QPainter *p, QSvgExtraStates &states) const
Definition: qsvgnode.cpp:307
QSvgDefs::QSvgDefs
QSvgDefs(QSvgNode *parent)
Definition: qsvgstructure.cpp:110
QSvgG::draw
virtual void draw(QPainter *p, QSvgExtraStates &states)
Definition: qsvgstructure.cpp:67
QT_END_NAMESPACE
#define QT_END_NAMESPACE
This macro expands to.
Definition: qglobal.h:90
QSvgSwitch::type
Type type() const
Definition: qsvgstructure.cpp:347
QString::at
const QChar at(int i) const
Returns the character at the given index position in the string.
Definition: qstring.h:698
QChar::unicode
ushort unicode() const
This is an overloaded member function, provided for convenience. It differs from the above function o...
Definition: qchar.h:251
QSvgNode::requiredFormats
const QStringList & requiredFormats() const
Definition: qsvgnode.cpp:280
QSvgNode::requiredExtensions
const QStringList & requiredExtensions() const
Definition: qsvgnode.cpp:260
qsvgstructure_p.h
QString::replace
QString & replace(int i, int len, QChar after)
Definition: qstring.cpp:2005
QString::length
int length() const
Returns the number of characters in this string.
Definition: qstring.h:696
QList::begin
iterator begin()
Returns an STL-style iterator pointing to the first item in the list.
Definition: qlist.h:267
QList::constBegin
const_iterator constBegin() const
Returns a const STL-style iterator pointing to the first item in the list.
Definition: qlist.h:269
QList::const_iterator
The QList::const_iterator class provides an STL-style const iterator for QList and QQueue...
Definition: qlist.h:228
QLatin1String
QLatin1String(DBUS_INTERFACE_DBUS))) Q_GLOBAL_STATIC_WITH_ARGS(QString
QSvgStructureNode::scopeNode
QSvgNode * scopeNode(const QString &id) const
Definition: qsvgstructure.cpp:92
QLocale::name
QString name() const
Returns the language and country of this locale as a string of the form "language_country", where language is a lowercase, two-letter ISO 639 language code, and country is an uppercase, two- or three-letter ISO 3166 country code.
Definition: qlocale.cpp:963
QSvgNode::applyStyle
void applyStyle(QPainter *p, QSvgExtraStates &states) const
Definition: qsvgnode.cpp:118
QSvgNode::parent
QSvgNode * parent() const
Definition: qsvgnode_p.h:183
QString
The QString class provides a Unicode character string.
Definition: qstring.h:83
QSvgSwitch::draw
virtual void draw(QPainter *p, QSvgExtraStates &states)
Definition: qsvgstructure.cpp:283
QEgl::extensions
Q_GUI_EXPORT QString extensions()
Definition: qegl.cpp:785
QSvgSwitch::m_systemLanguagePrefix
QString m_systemLanguagePrefix
Definition: qsvgstructure_p.h:112
isSupportedSvgExtension
static bool isSupportedSvgExtension(const QString &)
Definition: qsvgstructure.cpp:271
QSvgDefs::draw
virtual void draw(QPainter *p, QSvgExtraStates &states)
Definition: qsvgstructure.cpp:115
QList::isEmpty
bool isEmpty() const
Returns true if the list contains no items; otherwise returns false.
Definition: qlist.h:152
QSvgNode::requiredFeatures
const QStringList & requiredFeatures() const
Definition: qsvgnode.cpp:250
QList< QString >::const_iterator
friend class const_iterator
Definition: qlist.h:264
QList::append
void append(const T &t)
Inserts value at the end of the list.
Definition: qlist.h:507
QSvgNode::isVisible
bool isVisible() const
Definition: qsvgnode_p.h:188
QT_BEGIN_NAMESPACE
#define QT_BEGIN_NAMESPACE
This macro expands to.
Definition: qglobal.h:89
QRectF
The QRectF class defines a rectangle in the plane using floating point precision. ...
Definition: qrect.h:511
QTest::isEmpty
static bool isEmpty(const char *str)
Definition: qxmltestlogger.cpp:162
QSvgTinyDocument::addNamedNode
void addNamedNode(const QString &id, QSvgNode *node)
Definition: qsvgtinydocument.cpp:353
QList::end
iterator end()
Returns an STL-style iterator pointing to the imaginary item after the last item in the list...
Definition: qlist.h:270
QSvgNode::displayMode
DisplayMode displayMode() const
Definition: qsvgnode.cpp:330
QStringList
The QStringList class provides a list of strings.
Definition: qstringlist.h:66
QSvgStructureNode::addChild
void addChild(QSvgNode *child, const QString &id)
Definition: qsvgstructure.cpp:98
QString::indexOf
int indexOf(QChar c, int from=0, Qt::CaseSensitivity cs=Qt::CaseSensitive) const
Definition: qstring.cpp:2838
QSvgStructureNode::bounds
virtual QRectF bounds(QPainter *p, QSvgExtraStates &states) const
Definition: qsvgstructure.cpp:360
qsvgnode_p.h
QSvgG::QSvgG
QSvgG(QSvgNode *parent)
Definition: qsvgstructure.cpp:56
isSupportedSvgFeature
static bool isSupportedSvgFeature(const QString &str)
Definition: qsvgstructure.cpp:192
QSvgStructureNode::QSvgStructureNode
QSvgStructureNode(QSvgNode *parent)
Definition: qsvgstructure.cpp:86
QSvgDefs::type
Type type() const
Definition: qsvgstructure.cpp:120
QList::iterator
The QList::iterator class provides an STL-style non-const iterator for QList and QQueue.
Definition: qlist.h:181
QString::mid
QString mid(int position, int n=-1) const Q_REQUIRED_RESULT
Returns a string that contains n characters of this string, starting at the specified position index...
Definition: qstring.cpp:3706
QSvgNode::requiredFonts
const QStringList & requiredFonts() const
Definition: qsvgnode.cpp:290
qsvgtinydocument_p.h
key
int key
Definition: qkeysequence.cpp:395
QSvgNode::requiredLanguages
const QStringList & requiredLanguages() const
Definition: qsvgnode.cpp:270
QSvgSwitch::m_systemLanguage
QString m_systemLanguage
Definition: qsvgstructure_p.h:111
QSvgStructureNode::previousSiblingNode
QSvgNode * previousSiblingNode(QSvgNode *n) const
Definition: qsvgstructure.cpp:368
QSvgNode::draw
virtual void draw(QPainter *p, QSvgExtraStates &states)=0
QSvgSwitch::QSvgSwitch
QSvgSwitch(QSvgNode *parent)
Definition: qsvgstructure.cpp:277
qsvgstyle_p.h
QSvgNode::document
QSvgTinyDocument * document() const
Definition: qsvgnode.cpp:233
QSvgNode::revertStyle
void revertStyle(QPainter *p, QSvgExtraStates &states) const
Definition: qsvgnode.cpp:123
qDeleteAll
Q_OUTOFLINE_TEMPLATE void qDeleteAll(ForwardIterator begin, ForwardIterator end)
Definition: qalgorithms.h:319
QLatin1Char
The QLatin1Char class provides an 8-bit ASCII/Latin-1 character.
Definition: qchar.h:55
QSvgStructureNode::m_renderers
QList< QSvgNode * > m_renderers
Definition: qsvgstructure_p.h:81
QSvgG::type
Type type() const
Definition: qsvgstructure.cpp:81
QList::constEnd
const_iterator constEnd() const
Returns a const STL-style iterator pointing to the imaginary item after the last item in the list...
Definition: qlist.h:272
QSvgTinyDocument::namedNode
QSvgNode * namedNode(const QString &id) const
Definition: qsvgtinydocument.cpp:358
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