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 "GuiApplication.h"
  16 #include "GuiViewSource.h"
  17 #include "LaTeXHighlighter.h"
  18 #include "qt_helpers.h"
  19
  20 #include "BufferView.h"
  21 #include "Buffer.h"
  22 #include "Cursor.h"
  23 #include "Paragraph.h"
  24 #include "TexRow.h"
  25
  26 #include "support/lassert.h"
  27 #include "support/docstream.h"
  28 #include "support/gettext.h"
  29
  30 #include <QTextCursor>
  31 #include <QTextDocument>
  32
  33 using namespace std;
  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
  44         connect(viewFullSourceCB, SIGNAL(clicked()),
  45                 this, SLOT(updateView()));
  46         connect(autoUpdateCB, SIGNAL(toggled(bool)),
  47                 updatePB, SLOT(setDisabled(bool)));
  48         connect(updatePB, SIGNAL(clicked()),
  49                 this, SLOT(updateView()));
  50
  51         // setting a document at this point trigger an assertion in Qt
  52         // so we disable the signals here:
  53         document_->blockSignals(true);
  54         viewSourceTV->setDocument(document_);
  55         document_->blockSignals(false);
  56         viewSourceTV->setReadOnly(true);
  57         ///dialog_->viewSourceTV->setAcceptRichText(false);
  58         // this is personal. I think source code should be in fixed-size font
  59         QFont font(guiApp->typewriterFontName());
  60         font.setKerning(false);
  61         font.setFixedPitch(true);
  62         font.setStyleHint(QFont::TypeWriter);
  63         viewSourceTV->setFont(font);
  64         // again, personal taste
  65         viewSourceTV->setWordWrapMode(QTextOption::NoWrap);
  66 }
  67
  68
  69 void ViewSourceWidget::updateView()
  70 {
  71         BufferView * view = controller_.bufferview();
  72         if (!view) {
  73                 document_->setPlainText(QString());
  74                 setEnabled(false);
  75                 return;
  76         }
  77         if (autoUpdateCB->isChecked())
  78                 document_->setPlainText(controller_.getContent(
  79                         viewFullSourceCB->isChecked()));
  80
  81         GuiViewSource::Row row = controller_.getRows();
  82         QTextCursor c = QTextCursor(viewSourceTV->document());
  83         c.movePosition(QTextCursor::NextBlock, QTextCursor::MoveAnchor, row.begin);
  84         c.select(QTextCursor::BlockUnderCursor);
  85         c.movePosition(QTextCursor::NextBlock, QTextCursor::KeepAnchor,
  86                 row.end - row.begin + 1);
  87         viewSourceTV->setTextCursor(c);
  88 }
  89
  90
  91 GuiViewSource::GuiViewSource(GuiView & parent,
  92                 Qt::DockWidgetArea area, Qt::WindowFlags flags)
  93         : DockView(parent, "view-source", qt_("LaTeX Source"), area, flags)
  94 {
  95         widget_ = new ViewSourceWidget(*this);
  96         setWidget(widget_);
  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 void GuiViewSource::enableView(bool enable)
 113 {
 114         if (!enable)
 115                 // In the opposite case, updateView() will be called anyway.
 116                 widget_->updateView();
 117         widget_->setEnabled(enable);
 118 }
 119
 120
 121 bool GuiViewSource::initialiseParams(string const & /*source*/)
 122 {
 123         setWindowTitle(title());
 124         return true;
 125 }
 126
 127
 128 QString GuiViewSource::getContent(bool fullSource)
 129 {
 130         // get the *top* level paragraphs that contain the cursor,
 131         // or the selected text
 132         pit_type par_begin;
 133         pit_type par_end;
 134
 135         BufferView * view = bufferview();
 136         if (!view->cursor().selection()) {
 137                 par_begin = view->cursor().bottom().pit();
 138                 par_end = par_begin;
 139         } else {
 140                 par_begin = view->cursor().selectionBegin().bottom().pit();
 141                 par_end = view->cursor().selectionEnd().bottom().pit();
 142         }
 143         if (par_begin > par_end)
 144                 swap(par_begin, par_end);
 145         odocstringstream ostr;
 146         view->buffer().getSourceCode(ostr, par_begin, par_end + 1, fullSource);
 147         return toqstr(ostr.str());
 148 }
 149
 150
 151 GuiViewSource::Row GuiViewSource::getRows() const
 152 {
 153         BufferView const * view = bufferview();
 154         CursorSlice beg = view->cursor().selectionBegin().bottom();
 155         CursorSlice end = view->cursor().selectionEnd().bottom();
 156
 157         int begrow = view->buffer().texrow().
 158                 getRowFromIdPos(beg.paragraph().id(), beg.pos());
 159         int endrow = view->buffer().texrow().
 160                 getRowFromIdPos(end.paragraph().id(), end.pos());
 161         int nextendrow = view->buffer().texrow().
 162                 getRowFromIdPos(end.paragraph().id(), end.pos() + 1);
 163         Row row;
 164         row.begin = begrow;
 165         row.end = endrow == nextendrow ? endrow : (nextendrow - 1);
 166         return row;
 167 }
 168
 169
 170 QString GuiViewSource::title() const
 171 {
 172         switch (docType()) {
 173                 case LATEX:
 174                         return qt_("LaTeX Source");
 175                 case DOCBOOK:
 176                         return qt_("DocBook Source");
 177                 case LITERATE:
 178                         return qt_("Literate Source");
 179         }
 180         LASSERT(false, /**/);
 181         return QString();
 182 }
 183
 184
 185 Dialog * createGuiViewSource(GuiView & lv)
 186 {
 187         return new GuiViewSource(lv);
 188 }
 189
 190
 191 } // namespace frontend
 192 } // namespace lyx
 193
 194 #include "GuiViewSource_moc.cpp"