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/Debug.h"
  27 #include "support/lassert.h"
  28 #include "support/docstream.h"
  29 #include "support/gettext.h"
  30
  31 #include <QSettings>
  32 #include <QTextCursor>
  33 #include <QTextDocument>
  34 #include <QVariant>
  35
  36 using namespace std;
  37
  38 namespace lyx {
  39 namespace frontend {
  40
  41 ViewSourceWidget::ViewSourceWidget()
  42         :       bv_(0), document_(new QTextDocument(this)),
  43                 highlighter_(new LaTeXHighlighter(document_))
  44 {
  45         setupUi(this);
  46
  47         connect(viewFullSourceCB, SIGNAL(clicked()),
  48                 this, SLOT(updateView()));
  49         connect(autoUpdateCB, SIGNAL(toggled(bool)),
  50                 updatePB, SLOT(setDisabled(bool)));
  51         connect(updatePB, SIGNAL(clicked()),
  52                 this, SLOT(updateView()));
  53
  54         // setting a document at this point trigger an assertion in Qt
  55         // so we disable the signals here:
  56         document_->blockSignals(true);
  57         viewSourceTV->setDocument(document_);
  58         document_->blockSignals(false);
  59         viewSourceTV->setReadOnly(true);
  60         ///dialog_->viewSourceTV->setAcceptRichText(false);
  61         // this is personal. I think source code should be in fixed-size font
  62         QFont font(guiApp->typewriterFontName());
  63         font.setKerning(false);
  64         font.setFixedPitch(true);
  65         font.setStyleHint(QFont::TypeWriter);
  66         viewSourceTV->setFont(font);
  67         // again, personal taste
  68         viewSourceTV->setWordWrapMode(QTextOption::NoWrap);
  69 }
  70
  71
  72 /** get the source code of selected paragraphs, or the whole document
  73         \param fullSource get full source code
  74  */
  75 static QString getContent(BufferView const * view, bool fullSource)
  76 {
  77         // get the *top* level paragraphs that contain the cursor,
  78         // or the selected text
  79         pit_type par_begin;
  80         pit_type par_end;
  81
  82         if (!view->cursor().selection()) {
  83                 par_begin = view->cursor().bottom().pit();
  84                 par_end = par_begin;
  85         } else {
  86                 par_begin = view->cursor().selectionBegin().bottom().pit();
  87                 par_end = view->cursor().selectionEnd().bottom().pit();
  88         }
  89         if (par_begin > par_end)
  90                 swap(par_begin, par_end);
  91         odocstringstream ostr;
  92         view->buffer().getSourceCode(ostr, par_begin, par_end + 1, fullSource);
  93         return toqstr(ostr.str());
  94 }
  95
  96
  97 void ViewSourceWidget::setBufferView(BufferView const * bv)
  98 {
  99         bv_ = bv;
 100 }
 101
 102
 103 void ViewSourceWidget::updateView()
 104 {
 105         if (!bv_) {
 106                 document_->setPlainText(QString());
 107                 setEnabled(false);
 108                 return;
 109         }
 110
 111         document_->setPlainText(getContent(bv_, viewFullSourceCB->isChecked()));
 112
 113         CursorSlice beg = bv_->cursor().selectionBegin().bottom();
 114         CursorSlice end = bv_->cursor().selectionEnd().bottom();
 115         int const begrow = bv_->buffer().texrow().
 116                 getRowFromIdPos(beg.paragraph().id(), beg.pos());
 117         int endrow = bv_->buffer().texrow().
 118                 getRowFromIdPos(end.paragraph().id(), end.pos());
 119         int const nextendrow = bv_->buffer().texrow().
 120                 getRowFromIdPos(end.paragraph().id(), end.pos() + 1);
 121         if (endrow != nextendrow)
 122                 endrow = nextendrow - 1;
 123
 124         QTextCursor c = QTextCursor(viewSourceTV->document());
 125         c.movePosition(QTextCursor::NextBlock, QTextCursor::MoveAnchor, begrow);
 126         c.select(QTextCursor::BlockUnderCursor);
 127         c.movePosition(QTextCursor::NextBlock, QTextCursor::KeepAnchor,
 128                 endrow - begrow + 1);
 129         viewSourceTV->setTextCursor(c);
 130 }
 131
 132
 133 GuiViewSource::GuiViewSource(GuiView & parent,
 134                 Qt::DockWidgetArea area, Qt::WindowFlags flags)
 135         : DockView(parent, "view-source", qt_("LaTeX Source"), area, flags)
 136 {
 137         widget_ = new ViewSourceWidget();
 138         setWidget(widget_);
 139 }
 140
 141
 142 GuiViewSource::~GuiViewSource()
 143 {
 144         delete widget_;
 145 }
 146
 147
 148 void GuiViewSource::updateView()
 149 {
 150         if (widget_->autoUpdateCB->isChecked()) {
 151                 widget_->setBufferView(bufferview());
 152                 widget_->updateView();
 153         }
 154 }
 155
 156
 157 void GuiViewSource::enableView(bool enable)
 158 {
 159         if (!enable) {
 160                 // In the opposite case, updateView() will be called anyway.
 161                 widget_->setBufferView(bufferview());
 162                 widget_->updateView();
 163         }
 164         widget_->setEnabled(enable);
 165 }
 166
 167
 168 bool GuiViewSource::initialiseParams(string const & /*source*/)
 169 {
 170         setWindowTitle(title());
 171         return true;
 172 }
 173
 174
 175 QString GuiViewSource::title() const
 176 {
 177         switch (docType()) {
 178                 case LATEX:
 179                         return qt_("LaTeX Source");
 180                 case DOCBOOK:
 181                         return qt_("DocBook Source");
 182                 case LITERATE:
 183                         return qt_("Literate Source");
 184         }
 185         LASSERT(false, /**/);
 186         return QString();
 187 }
 188
 189
 190 void GuiViewSource::saveSession() const
 191 {
 192         Dialog::saveSession();
 193         QSettings settings;
 194         settings.setValue(
 195                 sessionKey() + "/fullsource", widget_->viewFullSourceCB->isChecked());
 196         settings.setValue(
 197                 sessionKey() + "/autoupdate", widget_->autoUpdateCB->isChecked());
 198 }
 199
 200
 201 void GuiViewSource::restoreSession()
 202 {
 203         DockView::restoreSession();
 204         // FIXME: Full source updating is too slow to be done at startup.
 205         //widget_->viewFullSourceCB->setChecked(
 206         //      settings.value(sessionKey() + "/fullsource", false).toBool());
 207         widget_->viewFullSourceCB->setChecked(false);
 208         QSettings settings;
 209         widget_->autoUpdateCB->setChecked(
 210                 settings.value(sessionKey() + "/autoupdate", true).toBool());
 211 }
 212
 213
 214 Dialog * createGuiViewSource(GuiView & lv)
 215 {
 216         return new GuiViewSource(lv);
 217 }
 218
 219
 220 } // namespace frontend
 221 } // namespace lyx
 222
 223 #include "GuiViewSource_moc.cpp"