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 ViewSourceWidget::ViewSourceWidget(GuiViewSource & 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 ViewSourceWidget::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 }
  81
  82
  83 void ViewSourceWidget::update(bool full_source)
  84 {
  85         document_->setPlainText(controller_.getContent(full_source));
  86 }
  87
  88
  89 GuiViewSource::GuiViewSource(GuiViewBase & parent, Qt::DockWidgetArea area, Qt::WindowFlags flags)
  90         : DockView(parent, "view-source", area, flags)
  91 {
  92         widget_ = new ViewSourceWidget(*this);
  93         setWidget(widget_);
  94         setWindowTitle(widget_->windowTitle());
  95 }
  96
  97
  98 GuiViewSource::~GuiViewSource()
  99 {
 100         delete widget_;
 101 }
 102
 103
 104 void GuiViewSource::updateView()
 105 {
 106         widget_->updateView();
 107 }
 108
 109
 110 bool GuiViewSource::initialiseParams(string const & /*source*/)
 111 {
 112         setWindowTitle(title());
 113         return true;
 114 }
 115
 116
 117 QString GuiViewSource::getContent(bool fullSource)
 118 {
 119         // get the *top* level paragraphs that contain the cursor,
 120         // or the selected text
 121         pit_type par_begin;
 122         pit_type par_end;
 123
 124         BufferView * view = bufferview();
 125         if (!view->cursor().selection()) {
 126                 par_begin = view->cursor().bottom().pit();
 127                 par_end = par_begin;
 128         } else {
 129                 par_begin = view->cursor().selectionBegin().bottom().pit();
 130                 par_end = view->cursor().selectionEnd().bottom().pit();
 131         }
 132         if (par_begin > par_end)
 133                 std::swap(par_begin, par_end);
 134         odocstringstream ostr;
 135         view->buffer().getSourceCode(ostr, par_begin, par_end + 1, fullSource);
 136         return toqstr(ostr.str());
 137 }
 138
 139
 140 std::pair<int, int> GuiViewSource::getRows() const
 141 {
 142         BufferView const * view = bufferview();
 143         CursorSlice beg = view->cursor().selectionBegin().bottom();
 144         CursorSlice end = view->cursor().selectionEnd().bottom();
 145
 146         int begrow = view->buffer().texrow().
 147                 getRowFromIdPos(beg.paragraph().id(), beg.pos());
 148         int endrow = view->buffer().texrow().
 149                 getRowFromIdPos(end.paragraph().id(), end.pos());
 150         int nextendrow = view->buffer().texrow().
 151                 getRowFromIdPos(end.paragraph().id(), end.pos() + 1);
 152         return std::make_pair(begrow, endrow == nextendrow ? endrow : (nextendrow - 1));
 153 }
 154
 155
 156 QString GuiViewSource::title() const
 157 {
 158         switch (docType()) {
 159                 case LATEX:
 160                         return qt_("LaTeX Source");
 161                 case DOCBOOK:
 162                         return qt_("DocBook Source");
 163                 case LITERATE:
 164                         return qt_("Literate Source");
 165         }
 166         BOOST_ASSERT(false);
 167         return QString();
 168 }
 169
 170
 171 Dialog * createGuiViewSource(LyXView & lv)
 172 {
 173         return new GuiViewSource(static_cast<GuiViewBase &>(lv));
 174 }
 175
 176
 177 } // namespace frontend
 178 } // namespace lyx
 179
 180 #include "GuiViewSource_moc.cpp"