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/assert.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         if (autoUpdateCB->isChecked())
  72                 update(viewFullSourceCB->isChecked());
  73
  74         GuiViewSource::Row row = controller_.getRows();
  75         QTextCursor c = QTextCursor(viewSourceTV->document());
  76         c.movePosition(QTextCursor::NextBlock, QTextCursor::MoveAnchor, row.begin);
  77         c.select(QTextCursor::BlockUnderCursor);
  78         c.movePosition(QTextCursor::NextBlock, QTextCursor::KeepAnchor,
  79                 row.end - row.begin + 1);
  80         viewSourceTV->setTextCursor(c);
  81 }
  82
  83
  84 void ViewSourceWidget::update(bool full_source)
  85 {
  86         document_->setPlainText(controller_.getContent(full_source));
  87 }
  88
  89
  90 GuiViewSource::GuiViewSource(GuiView & parent,
  91                 Qt::DockWidgetArea area, Qt::WindowFlags flags)
  92         : DockView(parent, "view-source", qt_("LaTeX Source"), area, flags)
  93 {
  94         widget_ = new ViewSourceWidget(*this);
  95         setWidget(widget_);
  96 }
  97
  98
  99 GuiViewSource::~GuiViewSource()
 100 {
 101         delete widget_;
 102 }
 103
 104
 105 void GuiViewSource::updateView()
 106 {
 107         widget_->updateView();
 108 }
 109
 110
 111 bool GuiViewSource::initialiseParams(string const & /*source*/)
 112 {
 113         setWindowTitle(title());
 114         return true;
 115 }
 116
 117
 118 QString GuiViewSource::getContent(bool fullSource)
 119 {
 120         // get the *top* level paragraphs that contain the cursor,
 121         // or the selected text
 122         pit_type par_begin;
 123         pit_type par_end;
 124
 125         BufferView * view = bufferview();
 126         if (!view->cursor().selection()) {
 127                 par_begin = view->cursor().bottom().pit();
 128                 par_end = par_begin;
 129         } else {
 130                 par_begin = view->cursor().selectionBegin().bottom().pit();
 131                 par_end = view->cursor().selectionEnd().bottom().pit();
 132         }
 133         if (par_begin > par_end)
 134                 swap(par_begin, par_end);
 135         odocstringstream ostr;
 136         view->buffer().getSourceCode(ostr, par_begin, par_end + 1, fullSource);
 137         return toqstr(ostr.str());
 138 }
 139
 140
 141 GuiViewSource::Row GuiViewSource::getRows() const
 142 {
 143         BufferView const * view = bufferview();
 144         CursorSlice beg = view->cursor().selectionBegin().bottom();
 145         CursorSlice end = view->cursor().selectionEnd().bottom();
 146
 147         int begrow = view->buffer().texrow().
 148                 getRowFromIdPos(beg.paragraph().id(), beg.pos());
 149         int endrow = view->buffer().texrow().
 150                 getRowFromIdPos(end.paragraph().id(), end.pos());
 151         int nextendrow = view->buffer().texrow().
 152                 getRowFromIdPos(end.paragraph().id(), end.pos() + 1);
 153         Row row;
 154         row.begin = begrow;
 155         row.end = endrow == nextendrow ? endrow : (nextendrow - 1);
 156         return row;
 157 }
 158
 159
 160 QString GuiViewSource::title() const
 161 {
 162         switch (docType()) {
 163                 case LATEX:
 164                         return qt_("LaTeX Source");
 165                 case DOCBOOK:
 166                         return qt_("DocBook Source");
 167                 case LITERATE:
 168                         return qt_("Literate Source");
 169         }
 170         LASSERT(false, /**/);
 171         return QString();
 172 }
 173
 174
 175 Dialog * createGuiViewSource(GuiView & lv)
 176 {
 177         return new GuiViewSource(lv);
 178 }
 179
 180
 181 } // namespace frontend
 182 } // namespace lyx
 183
 184 #include "GuiViewSource_moc.cpp"