src/frontends/qt4/GuiViewSource.cpp

   1 /**
   2  * \file GuiViewSource.cpp
   3  * This file is part of LyX, the document processor.
   4  * Licence details can be found in the file COPYING.
   5  *
   6  * \author John Levon
   7  * \author Bo Peng
   8  * \author Abdelrazak Younes
   9  *
  10  * Full author contact details are available in file CREDITS.
  11  */
  12
  13 #include <config.h>
  14
  15 #include "GuiViewSource.h"
  16 #include "LaTeXHighlighter.h"
  17 #include "qt_helpers.h"
  18
  19 #include "Application.h"
  20 #include "BufferView.h"
  21 #include "Buffer.h"
  22 #include "Cursor.h"
  23 #include "gettext.h"
  24 #include "Paragraph.h"
  25 #include "TexRow.h"
  26
  27 #include <QTextCursor>
  28 #include <QTextDocument>
  29 #include <boost/tuple/tuple.hpp>
  30
  31 using std::string;
  32
  33 namespace lyx {
  34 namespace frontend {
  35
  36 GuiViewSourceDialog::GuiViewSourceDialog(ControlViewSource & controller)
  37         :       controller_(controller), document_(new QTextDocument(this)),
  38                 highlighter_(new LaTeXHighlighter(document_))
  39 {
  40         setupUi(this);
  41         setWindowTitle(qt_("LaTeX Source"));
  42
  43         connect(viewFullSourceCB, SIGNAL(clicked()),
  44                 this, SLOT(updateView()));
  45         connect(autoUpdateCB, SIGNAL(toggled(bool)),
  46                 updatePB, SLOT(setDisabled(bool)));
  47         connect(updatePB, SIGNAL(clicked()),
  48                 this, SLOT(updateView()));
  49
  50         // setting a document at this point trigger an assertion in Qt
  51         // so we disable the signals here:
  52         document()->blockSignals(true);
  53         viewSourceTV->setDocument(document());
  54         document()->blockSignals(false);
  55         viewSourceTV->setReadOnly(true);
  56         ///dialog_->viewSourceTV->setAcceptRichText(false);
  57         // this is personal. I think source code should be in fixed-size font
  58         QFont font(toqstr(theApp()->typewriterFontName()));
  59         font.setKerning(false);
  60         font.setFixedPitch(true);
  61         font.setStyleHint(QFont::TypeWriter);
  62         viewSourceTV->setFont(font);
  63         // again, personal taste
  64         viewSourceTV->setWordWrapMode(QTextOption::NoWrap);
  65 }
  66
  67
  68 void GuiViewSourceDialog::updateView()
  69 {
  70         if (autoUpdateCB->isChecked())
  71                 update(viewFullSourceCB->isChecked());
  72
  73         int beg, end;
  74         boost::tie(beg, end) = controller_.getRows();
  75         QTextCursor c = QTextCursor(viewSourceTV->document());
  76         c.movePosition(QTextCursor::NextBlock, QTextCursor::MoveAnchor, beg);
  77         c.select(QTextCursor::BlockUnderCursor);
  78         c.movePosition(QTextCursor::NextBlock, QTextCursor::KeepAnchor, end - beg + 1);
  79         viewSourceTV->setTextCursor(c);
  80         QWidget::update();
  81 }
  82
  83
  84 void GuiViewSourceDialog::update(bool full_source)
  85 {
  86         document_->setPlainText(toqstr(controller_.updateContent(full_source)));
  87 }
  88
  89
  90 ControlViewSource::ControlViewSource(Dialog & parent)
  91         : Controller(parent)
  92 {}
  93
  94
  95 bool ControlViewSource::initialiseParams(string const & /*source*/)
  96 {
  97         return true;
  98 }
  99
 100
 101 docstring const ControlViewSource::updateContent(bool fullSource)
 102 {
 103         // get the *top* level paragraphs that contain the cursor,
 104         // or the selected text
 105         pit_type par_begin;
 106         pit_type par_end;
 107
 108         BufferView * view = bufferview();
 109         if (!view->cursor().selection()) {
 110                 par_begin = view->cursor().bottom().pit();
 111                 par_end = par_begin;
 112         } else {
 113                 par_begin = view->cursor().selectionBegin().bottom().pit();
 114                 par_end = view->cursor().selectionEnd().bottom().pit();
 115         }
 116         if (par_begin > par_end)
 117                 std::swap(par_begin, par_end);
 118         odocstringstream ostr;
 119         view->buffer().getSourceCode(ostr, par_begin, par_end + 1, fullSource);
 120         return ostr.str();
 121 }
 122
 123
 124 std::pair<int, int> ControlViewSource::getRows() const
 125 {
 126         BufferView const * view = bufferview();
 127         CursorSlice beg = view->cursor().selectionBegin().bottom();
 128         CursorSlice end = view->cursor().selectionEnd().bottom();
 129
 130         int begrow = view->buffer().texrow().
 131                 getRowFromIdPos(beg.paragraph().id(), beg.pos());
 132         int endrow = view->buffer().texrow().
 133                 getRowFromIdPos(end.paragraph().id(), end.pos());
 134         int nextendrow = view->buffer().texrow().
 135                 getRowFromIdPos(end.paragraph().id(), end.pos() + 1);
 136         return std::make_pair(begrow, endrow == nextendrow ? endrow : (nextendrow - 1));
 137 }
 138
 139
 140 docstring const ControlViewSource::title() const
 141 {
 142         switch (docType()) {
 143                 case LATEX:
 144                         return _("LaTeX Source");
 145                 case DOCBOOK:
 146                         return _("DocBook Source");
 147                 case LITERATE:
 148                         return _("Literate Source");
 149                 default:
 150                         BOOST_ASSERT(false);
 151                         return docstring();
 152         }
 153 }
 154
 155
 156 Dialog * createGuiViewSource(LyXView & lv)
 157 {
 158         return new GuiViewSource(static_cast<GuiViewBase &>(lv));
 159 }
 160
 161
 162 } // namespace frontend
 163 } // namespace lyx
 164
 165 #include "GuiViewSource_moc.cpp"