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[lyx.git] / src / frontends / qt4 / GuiViewSource.cpp
index 991877bea773f3118ad32525cff8f44a0631b369..b2df874437206bde096e139e8559bd5bab06ac1b 100644 (file)
 #include "LaTeXHighlighter.h"
 #include "qt_helpers.h"
 
-#include "BufferView.h"
 #include "Buffer.h"
+#include "BufferParams.h"
+#include "BufferView.h"
 #include "Cursor.h"
+#include "Format.h"
 #include "Paragraph.h"
 #include "TexRow.h"
 
-#include "support/Debug.h"
+#include "support/debug.h"
 #include "support/lassert.h"
 #include "support/docstream.h"
 #include "support/gettext.h"
 
+#include <boost/crc.hpp>
+
+#include <QBoxLayout>
 #include <QSettings>
 #include <QTextCursor>
 #include <QTextDocument>
@@ -40,16 +45,23 @@ namespace frontend {
 
 ViewSourceWidget::ViewSourceWidget()
        :       bv_(0), document_(new QTextDocument(this)),
-               highlighter_(new LaTeXHighlighter(document_))
+               highlighter_(new LaTeXHighlighter(document_)),
+               force_getcontent_(true)
 {
        setupUi(this);
 
-       connect(viewFullSourceCB, SIGNAL(clicked()),
-               this, SLOT(updateView()));
+       connect(contentsCO, SIGNAL(activated(int)),
+               this, SLOT(contentsChanged()));
        connect(autoUpdateCB, SIGNAL(toggled(bool)),
                updatePB, SLOT(setDisabled(bool)));
+       connect(autoUpdateCB, SIGNAL(toggled(bool)),
+               this, SLOT(updateView()));
+       connect(masterPerspectiveCB, SIGNAL(toggled(bool)),
+               this, SLOT(updateView()));
        connect(updatePB, SIGNAL(clicked()),
                this, SLOT(updateView()));
+       connect(outputFormatCO, SIGNAL(activated(int)),
+               this, SLOT(setViewFormat()));
 
        // setting a document at this point trigger an assertion in Qt
        // so we disable the signals here:
@@ -69,10 +81,21 @@ ViewSourceWidget::ViewSourceWidget()
 }
 
 
+static size_t crcCheck(docstring const & s)
+{
+       boost::crc_32_type crc;
+       crc.process_bytes(&s[0], sizeof(char_type) * s.size());
+       return crc.checksum();
+}
+
+
 /** get the source code of selected paragraphs, or the whole document
        \param fullSource get full source code
+       \return true if the content has changed since last call.
  */
-static QString getContent(BufferView const * view, bool fullSource)
+static bool getContent(BufferView const * view, Buffer::OutputWhat output,
+                      QString & qstr, string const format, bool force_getcontent,
+                      bool master)
 {
        // get the *top* level paragraphs that contain the cursor,
        // or the selected text
@@ -89,14 +112,43 @@ static QString getContent(BufferView const * view, bool fullSource)
        if (par_begin > par_end)
                swap(par_begin, par_end);
        odocstringstream ostr;
-       view->buffer().getSourceCode(ostr, par_begin, par_end + 1, fullSource);
-       return toqstr(ostr.str());
+       view->buffer().getSourceCode(ostr, format, par_begin, par_end + 1,
+                                    output, master);
+       docstring s = ostr.str();
+       // FIXME THREAD
+       // Could this be private to this particular dialog? We could have
+       // more than one of these, in different windows.
+       static size_t crc = 0;
+       size_t newcrc = crcCheck(s);
+       if (newcrc == crc && !force_getcontent)
+               return false;
+       crc = newcrc;
+       qstr = toqstr(s);
+       return true;
 }
 
 
 void ViewSourceWidget::setBufferView(BufferView const * bv)
 {
+       if (bv_ != bv)
+               force_getcontent_ = true;
        bv_ = bv;
+       setEnabled(bv ?  true : false);
+}
+
+
+void ViewSourceWidget::contentsChanged()
+{
+       if (autoUpdateCB->isChecked())
+               updateView();
+}
+
+
+void ViewSourceWidget::setViewFormat()
+{
+       view_format_ = outputFormatCO->itemData(
+             outputFormatCO->currentIndex()).toString();
+       updateView();
 }
 
 
@@ -108,7 +160,22 @@ void ViewSourceWidget::updateView()
                return;
        }
 
-       document_->setPlainText(getContent(bv_, viewFullSourceCB->isChecked()));
+       setEnabled(true);
+
+       string const format = fromqstr(view_format_);
+
+       QString content;
+       Buffer::OutputWhat output = Buffer::CurrentParagraph;
+       if (contentsCO->currentIndex() == 1)
+               output = Buffer::FullSource;
+       else if (contentsCO->currentIndex() == 2)
+               output = Buffer::OnlyPreamble;
+       else if (contentsCO->currentIndex() == 3)
+               output = Buffer::OnlyBody;
+
+       if (getContent(bv_, output, content, format,
+                     force_getcontent_, masterPerspectiveCB->isChecked()))
+               document_->setPlainText(content);
 
        CursorSlice beg = bv_->cursor().selectionBegin().bottom();
        CursorSlice end = bv_->cursor().selectionEnd().bottom();
@@ -130,11 +197,58 @@ void ViewSourceWidget::updateView()
 }
 
 
+void ViewSourceWidget::updateDefaultFormat()
+{
+       if (!bv_)
+               return;
+
+       outputFormatCO->blockSignals(true);
+       outputFormatCO->clear();
+       outputFormatCO->addItem(qt_("Default"),
+                               QVariant(QString("default")));
+
+       int index = 0;
+       vector<string> tmp = bv_->buffer().params().backends();
+       vector<string>::const_iterator it = tmp.begin();
+       vector<string>::const_iterator en = tmp.end();
+       for (; it != en; ++it) {
+               string const format = *it;
+               Format const * fmt = formats.getFormat(format);
+               if (!fmt) {
+                       LYXERR0("Can't find format for backend " << format << "!");
+                       continue;
+               } 
+
+               QString const pretty = qt_(fmt->prettyname());
+               QString const qformat = toqstr(format);
+               outputFormatCO->addItem(pretty, QVariant(qformat));
+               if (qformat == view_format_)
+                  index = outputFormatCO->count() -1;
+       }
+       outputFormatCO->setCurrentIndex(index);
+
+       outputFormatCO->blockSignals(false);
+}
+
+
+void ViewSourceWidget::resizeEvent (QResizeEvent * event)
+{
+       QSize const & formSize = formLayout->sizeHint();
+       // minimize the size of the part that contains the buttons
+       if (width() * formSize.height() < height() * formSize.width()) {
+               layout_->setDirection(QBoxLayout::TopToBottom);
+       } else {
+               layout_->setDirection(QBoxLayout::LeftToRight);
+       }
+       QWidget::resizeEvent(event);
+}
+
+
 GuiViewSource::GuiViewSource(GuiView & parent,
                Qt::DockWidgetArea area, Qt::WindowFlags flags)
        : DockView(parent, "view-source", qt_("LaTeX Source"), area, flags)
 {
-       widget_ = new ViewSourceWidget();
+       widget_ = new ViewSourceWidget;
        setWidget(widget_);
 }
 
@@ -151,17 +265,17 @@ void GuiViewSource::updateView()
                widget_->setBufferView(bufferview());
                widget_->updateView();
        }
+       widget_->masterPerspectiveCB->setEnabled(buffer().parent());
 }
 
 
 void GuiViewSource::enableView(bool enable)
 {
-       if (!enable) {
+       widget_->setBufferView(bufferview());
+       widget_->updateDefaultFormat();
+       if (!enable)
                // In the opposite case, updateView() will be called anyway.
-               widget_->setBufferView(bufferview());
                widget_->updateView();
-       }
-       widget_->setEnabled(enable);
 }
 
 
@@ -182,7 +296,7 @@ QString GuiViewSource::title() const
                case LITERATE:
                        return qt_("Literate Source");
        }
-       LASSERT(false, /**/);
+       LATTEST(false);
        return QString();
 }
 
@@ -191,8 +305,9 @@ void GuiViewSource::saveSession() const
 {
        Dialog::saveSession();
        QSettings settings;
-       settings.setValue(
-               sessionKey() + "/fullsource", widget_->viewFullSourceCB->isChecked());
+       // see below
+       // settings.setValue(
+       //      sessionKey() + "/output", widget_->contentsCO->currentIndex());
        settings.setValue(
                sessionKey() + "/autoupdate", widget_->autoUpdateCB->isChecked());
 }
@@ -202,12 +317,13 @@ void GuiViewSource::restoreSession()
 {
        DockView::restoreSession();
        // FIXME: Full source updating is too slow to be done at startup.
-       //widget_->viewFullSourceCB->setChecked(
-       //      settings.value(sessionKey() + "/fullsource", false).toBool());
-       widget_->viewFullSourceCB->setChecked(false);
+       //widget_->outputCO-setCurrentIndex(
+       //      settings.value(sessionKey() + "/output", false).toInt());
+       widget_->contentsCO->setCurrentIndex(0);
        QSettings settings;
        widget_->autoUpdateCB->setChecked(
                settings.value(sessionKey() + "/autoupdate", true).toBool());
+       widget_->updateView();
 }
 
 
@@ -220,4 +336,4 @@ Dialog * createGuiViewSource(GuiView & lv)
 } // namespace frontend
 } // namespace lyx
 
-#include "GuiViewSource_moc.cpp"
+#include "moc_GuiViewSource.cpp"