GNU Octave  4.0.0
A high-level interpreted language, primarily intended for numerical computations, mostly compatible with Matlab
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1 /*
2 
3 Copyright (C) 2009 P. L. Lucas
4 Copyright (C) 2012-2015 Jacob Dawid
5 
6 This file is part of Octave.
7 
8 Octave is free software; you can redistribute it and/or modify it
9 under the terms of the GNU General Public License as published by the
10 Free Software Foundation; either version 3 of the License, or (at your
11 option) any later version.
12 
13 Octave is distributed in the hope that it will be useful, but WITHOUT
14 ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
15 FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
16 for more details.
17 
18 You should have received a copy of the GNU General Public License
19 along with Octave; see the file COPYING. If not, see
20 <http://www.gnu.org/licenses/>.
21 
22 */
23 
24 // Author: P. L. Lucas
25 // Author: Jacob Dawid <[email protected]>
26 
27 #ifdef HAVE_CONFIG_H
28 #include <config.h>
29 #endif
30 
31 #include "webinfo.h"
32 #include <QVBoxLayout>
33 #include <QHBoxLayout>
34 #include <QApplication>
35 #include <QClipboard>
36 
37 #include "file-ops.h"
38 #include "help.h"
39 #include "defaults.h"
40 #include "resource-manager.h"
41 
42 
43 webinfo::webinfo (QWidget *p)
44  : QWidget (p)
45 {
46  _font_web = font ();
47 
48  QVBoxLayout *vbox_layout = new QVBoxLayout ();
49  vbox_layout->setMargin (0);
50  setLayout (vbox_layout);
51 
52  QHBoxLayout *hbox_layout = new QHBoxLayout ();
53  hbox_layout->setMargin (0);
54  hbox_layout->setSpacing (0);
55  vbox_layout->addLayout (hbox_layout);
56 
57  _tab_bar = new QTabBar (this);
58  _tab_bar->setSizePolicy (QSizePolicy::Preferred,QSizePolicy::Preferred);
59  _tab_bar->setExpanding (false);
60  _tab_bar->setTabsClosable (true);
61 #ifdef HAVE_QTABWIDGET_SETMOVABLE
62  _tab_bar->setMovable (true);
63 #endif
64  hbox_layout->addWidget (_tab_bar);
65 
66  _zoom_in_button = new QToolButton (this);
67  _zoom_in_button->setIcon (resource_manager::icon ("zoom-in"));
68  hbox_layout->addWidget (_zoom_in_button);
69 
70  _zoom_out_button = new QToolButton (this);
71  _zoom_out_button->setIcon (resource_manager::icon ("zoom-out"));
72  hbox_layout->addWidget (_zoom_out_button);
73 
74  _stacked_widget = new QStackedWidget (this);
75  vbox_layout->addWidget (_stacked_widget);
76 
77  hbox_layout = new QHBoxLayout ();
78  vbox_layout->addLayout (hbox_layout);
79 
80  _search_line_edit = new QLineEdit(this);
81 #ifdef HAVE_SETPLACEHOLDERTEXT
82  _search_line_edit->setPlaceholderText (
83  tr ("Type here and press \'Return\' to search"));
84 #endif
85  hbox_layout->addWidget (_search_line_edit);
86 
87  _search_check_box = new QCheckBox (tr ("Global search"));
88  hbox_layout->addWidget (_search_check_box);
89 
90  connect (_tab_bar, SIGNAL (tabCloseRequested (int)), this,
91  SLOT (close_tab (int)));
92  connect (_tab_bar, SIGNAL (currentChanged (int)), this,
93  SLOT (current_tab_changed (int)));
94  connect (_zoom_in_button, SIGNAL (clicked ()), this, SLOT (zoom_in ()));
95  connect (_zoom_out_button, SIGNAL (clicked ()), this, SLOT (zoom_out ()));
96  connect (_search_line_edit, SIGNAL (returnPressed ()), this, SLOT (search ()));
97 
98  resize (500, 300);
99 
100  if (! set_info_path (QString::fromStdString (Vinfo_file)))
101  { // Info file does not exist
102  _search_check_box->setEnabled (false);
103  _search_line_edit->setEnabled (false);
104 
105  QTextBrowser *msg = addNewTab (tr ("Error"));
106  QString msg_text = QString (
107  "<html><body><br><br><center><b>%1</b></center></body></html>").
108  arg (tr ("The info file<p>%1<p>or compressed versions do not exist").
109  arg(QString::fromStdString (Vinfo_file)));
110  msg->setHtml (msg_text);
111  }
112 }
113 
114 bool
115 webinfo::set_info_path (const QString& info_path)
116 {
117  if (_parser.set_info_path (info_path))
118  {
119  load_node ("Top");
120  return true;
121  }
122  else
123  return false;
124 }
125 
126 void
127 webinfo::load_node (const QString& node_name)
128 {
129  // no XREF in the tabs
130  QString tab_text = node_name;
131  tab_text.replace("XREF","");
132 
133  //Check if node has been already opened.
134  for (int i = 0; i < _tab_bar->count (); i++)
135  {
136  if (tab_text == _tab_bar->tabText (i))
137  {
138  _tab_bar->setCurrentIndex (i);
139  return;
140  }
141  }
142 
143  QString text = _parser.search_node (node_name);
144  int i = _parser.is_ref (node_name);
145  _text_browser = addNewTab (tab_text);
146  _text_browser->setHtml (_parser.node_text_to_html (text, i - 1, "anchor"));
147 
148  if (i != -1)
149  {
150  _text_browser->scrollToAnchor ("anchor");
151  }
152 }
153 
154 void
155 webinfo::link_clicked (const QUrl & link)
156 {
157  QString node = link.toString ();
158  if (node.at (0) != '#')
159  load_node (node);
160  else
161  _text_browser->scrollToAnchor (node);
162 }
163 
164 void
165 webinfo::current_tab_changed (int index)
166 {
167  QVariant tab_data = _tab_bar->tabData (index);
168  _text_browser = static_cast<QTextBrowser*> (tab_data.value<void*> ());
169 
170  _stacked_widget->setCurrentIndex (_stacked_widget->indexOf (_text_browser));
171 
172  if (_text_browser->font () != _font_web)
173  {
174  _text_browser->setFont (_font_web);
175  }
176 }
177 
178 QTextBrowser *
179 webinfo::addNewTab (const QString& name)
180 {
181  _text_browser = new QTextBrowser (this);
182  _text_browser->setOpenLinks (false);
183  _text_browser->show ();
184 
185  connect (_text_browser, SIGNAL (anchorClicked (const QUrl &)), this,
186  SLOT (link_clicked (const QUrl &)));
187  disconnect(_tab_bar, SIGNAL (currentChanged(int)), this,
188  SLOT (current_tab_changed (int)));
189 
190  int ns = _stacked_widget->addWidget (_text_browser);
191  _stacked_widget->setCurrentIndex (ns);
192 
193  int nt = _tab_bar->addTab (name);
194  _tab_bar->setCurrentIndex (nt);
195  QVariant tab_data;
196  tab_data.setValue (static_cast<void*> (_text_browser));
197  _tab_bar->setTabData (nt, tab_data);
198 
199  connect (_tab_bar, SIGNAL (currentChanged (int)), this,
200  SLOT (current_tab_changed (int)));
201 
202  if (_text_browser->font () != _font_web)
203  {
204  _text_browser->setFont (_font_web);
205  }
206  return _text_browser;
207 }
208 
209 void
210 webinfo::close_tab (int index)
211 {
212  if (_tab_bar->count () > 1)
213  {
214  QVariant tab_data = _tab_bar->tabData (index);
215  QWidget *w = static_cast<QWidget*> (tab_data.value<void*> ());
216  _stacked_widget->removeWidget (w);
217  delete w;
218 
219  _tab_bar->removeTab (index);
220  }
221 }
222 
223 void
224 webinfo::load_ref (const QString &ref_name)
225 {
226  QString text = _parser.find_ref (ref_name);
227  if (text.length () > 0)
228  {
229  load_node (text);
230  }
231  else
232  {
233  // not found
234  load_node("Top");
235  }
236 
237  if (_text_browser)
238  _text_browser->setFocus();
239 }
240 
241 void
242 webinfo::search ()
243 {
244  if (_search_check_box->isChecked ())
245  {
246  // Global search
247  QString results = _parser.global_search (_search_line_edit->text (), 5);
248  _text_browser=addNewTab ("Results for: " + _search_line_edit->text ());
249  _text_browser->setHtml (results);
250  }
251  else
252  {
253  // Local search
254  _text_browser->find (_search_line_edit->text ());
255  }
256 }
257 
258 void
259 webinfo::zoom_in ()
260 {
261  _font_web.setPointSize (_font_web.pointSize() + 1);
262  _text_browser->setFont (_font_web);
263 }
264 
265 void
266 webinfo::zoom_out ()
267 {
268  _font_web.setPointSize (_font_web.pointSize() - 1);
269  _text_browser->setFont (_font_web);
270 }
271 
272 void
273 webinfo::copyClipboard ()
274 {
275  if (_search_line_edit->hasFocus () && _search_line_edit->hasSelectedText ())
276  {
277  QClipboard *clipboard = QApplication::clipboard ();
278 
279  clipboard->setText (_search_line_edit->selectedText ());
280  }
281  if (_text_browser->hasFocus ())
282  {
283  _text_browser->copy ();
284  }
285 }
286 
287 void
288 webinfo::selectAll ()
289 {
290  if (_search_line_edit->hasFocus ())
291  {
292  _search_line_edit->selectAll ();
293  }
294  if (_text_browser->hasFocus ())
295  {
296  _text_browser->selectAll ();
297  }
298 }
299 
300 
301 void
302 webinfo::pasteClipboard ()
303 {
304  if (_search_line_edit->hasFocus ())
305  {
306  QClipboard *clipboard = QApplication::clipboard ();
307  QString str = clipboard->text ();
308  if (str.length () > 0)
309  _search_line_edit->insert (str);
310  }
311 }
312 
webinfo::selectAll
void selectAll()
Definition: webinfo.cc:288
webinfo::_tab_bar
QTabBar * _tab_bar
Definition: webinfo.h:60
Vinfo_file
std::string Vinfo_file
Definition: help.cc:82
webinfo::load_ref
void load_ref(const QString &ref_name)
Definition: webinfo.cc:224
webinfo::zoom_out
void zoom_out()
Definition: webinfo.cc:266
webinfo::_search_check_box
QCheckBox * _search_check_box
Definition: webinfo.h:63
parser::global_search
QString global_search(const QString &text, int maxFounds)
Definition: parser.cc:582
webinfo::addNewTab
QTextBrowser * addNewTab(const QString &name)
Definition: webinfo.cc:179
webinfo::pasteClipboard
void pasteClipboard()
Definition: webinfo.cc:302
QtHandles::Utils::fromStdString
QString fromStdString(const std::string &s)
Definition: QtHandlesUtils.cc:49
webinfo::set_info_path
bool set_info_path(const QString &info_path)
Definition: webinfo.cc:115
webinfo::link_clicked
void link_clicked(const QUrl &link)
Definition: webinfo.cc:155
webinfo::_text_browser
QTextBrowser * _text_browser
Definition: webinfo.h:59
webinfo::_font_web
QFont _font_web
Definition: webinfo.h:68
webinfo::_stacked_widget
QStackedWidget * _stacked_widget
Definition: webinfo.h:61
link
static octave_idx_type link(octave_idx_type s, octave_idx_type t, octave_idx_type *pp)
Definition: colamd.cc:104
webinfo::_zoom_out_button
QToolButton * _zoom_out_button
Definition: webinfo.h:65
webinfo::zoom_in
void zoom_in()
Definition: webinfo.cc:259
Faddeeva::w
std::complex< double > w(std::complex< double > z, double relerr=0)
webinfo::copyClipboard
void copyClipboard()
Definition: webinfo.cc:273
arg
double arg(double x)
Definition: lo-mappers.h:37
webinfo::_search_line_edit
QLineEdit * _search_line_edit
Definition: webinfo.h:62
parser::node_text_to_html
QString node_text_to_html(const QString &text, int anchorPos=-1, const QString &anchor=QString())
Translates text of node to Html.
Definition: parser.cc:389
webinfo::load_node
void load_node(const QString &node_name)
Definition: webinfo.cc:127
webinfo::current_tab_changed
void current_tab_changed(int index)
Definition: webinfo.cc:165
parser::is_ref
int is_ref(const QString &node)
Checks if this node is reference.
Definition: parser.cc:134
webinfo::search
void search()
Definition: webinfo.cc:242
webinfo::close_tab
void close_tab(int index)
Definition: webinfo.cc:210
parser::set_info_path
bool set_info_path(const QString &_info_path)
Definition: parser.cc:51
webinfo::_parser
parser _parser
Definition: webinfo.h:67
resource_manager::icon
static QIcon icon(const QString &icon_name, bool fallback=true)
Definition: resource-manager.h:49
parser::find_ref
QString find_ref(const QString &name)
Definition: parser.cc:671
parser::search_node
QString search_node(const QString &node)
Definition: parser.cc:150
webinfo::webinfo
webinfo(QWidget *parent=0)
Definition: webinfo.cc:43
webinfo::_zoom_in_button
QToolButton * _zoom_in_button
Definition: webinfo.h:64
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