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 "support/docstream.h"
  28
  29 #include <QTextCursor>
  30 #include <QTextDocument>
  31 #include <boost/tuple/tuple.hpp>
  32
  33 using std::string;
  34
  35 namespace lyx {
  36 namespace frontend {
  37
  38 ViewSourceWidget::ViewSourceWidget(GuiViewSource & controller)
  39         :       controller_(controller), document_(new QTextDocument(this)),
  40                 highlighter_(new LaTeXHighlighter(document_))
  41 {
  42         setupUi(this);
  43         setWindowTitle(qt_("LaTeX Source"));
  44
  45         connect(viewFullSourceCB, SIGNAL(clicked()),
  46                 this, SLOT(updateView()));
  47         connect(autoUpdateCB, SIGNAL(toggled(bool)),
  48                 updatePB, SLOT(setDisabled(bool)));
  49         connect(updatePB, SIGNAL(clicked()),
  50                 this, SLOT(updateView()));
  51
  52         // setting a document at this point trigger an assertion in Qt
  53         // so we disable the signals here:
  54         document_->blockSignals(true);
  55         viewSourceTV->setDocument(document_);
  56         document_->blockSignals(false);
  57         viewSourceTV->setReadOnly(true);
  58         ///dialog_->viewSourceTV->setAcceptRichText(false);
  59         // this is personal. I think source code should be in fixed-size font
  60         QFont font(toqstr(theApp()->typewriterFontName()));
  61         font.setKerning(false);
  62         font.setFixedPitch(true);
  63         font.setStyleHint(QFont::TypeWriter);
  64         viewSourceTV->setFont(font);
  65         // again, personal taste
  66         viewSourceTV->setWordWrapMode(QTextOption::NoWrap);
  67 }
  68
  69
  70 void ViewSourceWidget::updateView()
  71 {
  72         if (autoUpdateCB->isChecked())
  73                 update(viewFullSourceCB->isChecked());
  74
  75         int beg, end;
  76         boost::tie(beg, end) = controller_.getRows();
  77         QTextCursor c = QTextCursor(viewSourceTV->document());
  78         c.movePosition(QTextCursor::NextBlock, QTextCursor::MoveAnchor, beg);
  79         c.select(QTextCursor::BlockUnderCursor);
  80         c.movePosition(QTextCursor::NextBlock, QTextCursor::KeepAnchor, end - beg + 1);
  81         viewSourceTV->setTextCursor(c);
  82 }
  83
  84
  85 void ViewSourceWidget::update(bool full_source)
  86 {
  87         document_->setPlainText(controller_.getContent(full_source));
  88 }
  89
  90
  91 GuiViewSource::GuiViewSource(GuiViewBase & parent, Qt::DockWidgetArea area, Qt::WindowFlags flags)
  92         : DockView(parent, "view-source", area, flags)
  93 {
  94         widget_ = new ViewSourceWidget(*this);
  95         setWidget(widget_);
  96         setWindowTitle(widget_->windowTitle());
  97 }
  98
  99
 100 GuiViewSource::~GuiViewSource()
 101 {
 102         delete widget_;
 103 }
 104
 105
 106 void GuiViewSource::updateView()
 107 {
 108         widget_->updateView();
 109 }
 110
 111
 112 bool GuiViewSource::initialiseParams(string const & /*source*/)
 113 {
 114         setWindowTitle(title());
 115         return true;
 116 }
 117
 118
 119 QString GuiViewSource::getContent(bool fullSource)
 120 {
 121         // get the *top* level paragraphs that contain the cursor,
 122         // or the selected text
 123         pit_type par_begin;
 124         pit_type par_end;
 125
 126         BufferView * view = bufferview();
 127         if (!view->cursor().selection()) {
 128                 par_begin = view->cursor().bottom().pit();
 129                 par_end = par_begin;
 130         } else {
 131                 par_begin = view->cursor().selectionBegin().bottom().pit();
 132                 par_end = view->cursor().selectionEnd().bottom().pit();
 133         }
 134         if (par_begin > par_end)
 135                 std::swap(par_begin, par_end);
 136         odocstringstream ostr;
 137         view->buffer().getSourceCode(ostr, par_begin, par_end + 1, fullSource);
 138         return toqstr(ostr.str());
 139 }
 140
 141
 142 std::pair<int, int> GuiViewSource::getRows() const
 143 {
 144         BufferView const * view = bufferview();
 145         CursorSlice beg = view->cursor().selectionBegin().bottom();
 146         CursorSlice end = view->cursor().selectionEnd().bottom();
 147
 148         int begrow = view->buffer().texrow().
 149                 getRowFromIdPos(beg.paragraph().id(), beg.pos());
 150         int endrow = view->buffer().texrow().
 151                 getRowFromIdPos(end.paragraph().id(), end.pos());
 152         int nextendrow = view->buffer().texrow().
 153                 getRowFromIdPos(end.paragraph().id(), end.pos() + 1);
 154         return std::make_pair(begrow, endrow == nextendrow ? endrow : (nextendrow - 1));
 155 }
 156
 157
 158 QString GuiViewSource::title() const
 159 {
 160         switch (docType()) {
 161                 case LATEX:
 162                         return qt_("LaTeX Source");
 163                 case DOCBOOK:
 164                         return qt_("DocBook Source");
 165                 case LITERATE:
 166                         return qt_("Literate Source");
 167         }
 168         BOOST_ASSERT(false);
 169         return QString();
 170 }
 171
 172
 173 Dialog * createGuiViewSource(LyXView & lv)
 174 {
 175         return new GuiViewSource(static_cast<GuiViewBase &>(lv));
 176 }
 177
 178
 179 } // namespace frontend
 180 } // namespace lyx
 181
 182 #include "GuiViewSource_moc.cpp"