]> git.lyx.org Git - lyx.git/blobdiff - src/frontends/screen.C
bug 1341
[lyx.git] / src / frontends / screen.C
index 9262d4bb79bf6085a2beb4b97a4966c512d573c4..8134d61ea23b2dc7657fa78af84d74a4d9bba81e 100644 (file)
-/* This file is part of
-* ======================================================
-*
-*           LyX, The Document Processor
-*
-*          Copyright 1995 Matthias Ettrich
-*           Copyright 1995-1998 The LyX Team
-*
-* ====================================================== */
+/**
+ * \file screen.C
+ * This file is part of LyX, the document processor.
+ * Licence details can be found in the file COPYING.
+ *
+ * \author John Levon
+ *
+ * Full author contact details are available in file CREDITS.
+ *
+ * Splash screen code added by Angus Leeming
+ */
 
 #include <config.h>
 
-#ifdef __GNUG__
-#pragma implementation
-#endif
-
-#include <algorithm>
-
 #include "screen.h"
+
 #include "lyxtext.h"
+#include "lyxrc.h"
 #include "lyxrow.h"
-#include "frontends/Painter.h"
-#include "frontends/WorkArea.h"
-#include "buffer.h"
 #include "BufferView.h"
+#include "buffer.h"
+#include "WorkArea.h"
+#include "Painter.h"
 #include "font_metrics.h"
-#include "insets/insettext.h"
-#include "frontends/xforms/ColorHandler.h"
 #include "language.h"
+#include "debug.h"
+#include "rowpainter.h"
+#include "insets/updatableinset.h"
+#include "lyx_gui.h"
+#include "metricsinfo.h"
 
-using std::max;
-using std::min;
-
-namespace {
-
-GC createGC()
-{
-       XGCValues val;
-       val.foreground = BlackPixel(fl_get_display(),
-                                   DefaultScreen(fl_get_display()));
-
-       val.function = GXcopy;
-       val.graphics_exposures = false;
-       val.line_style = LineSolid;
-       val.line_width = 0;
-       return XCreateGC(fl_get_display(), RootWindow(fl_get_display(), 0),
-                        GCForeground | GCFunction | GCGraphicsExposures
-                        | GCLineWidth | GCLineStyle , &val);
-}
+// Splash screen-specific stuff
+#include "lyxfont.h"
+#include "version.h"
 
-} // namespace anon
+#include "graphics/GraphicsLoader.h"
+#include "graphics/GraphicsImage.h"
 
+#include "support/filetools.h" // LibFileSearch
 
-// Constructor
-LScreen::LScreen(WorkArea & o)
-       : owner(o), force_clear(true)
-{
-       // the cursor isnt yet visible
-       cursor_visible = false;
-       cursor_pixmap = 0;
-       cursor_pixmap_x = 0;
-       cursor_pixmap_y = 0;
-       cursor_pixmap_w = 0;
-       cursor_pixmap_h = 0;
-
-       // We need this GC
-       gc_copy = createGC();
-}
+#include <boost/utility.hpp>
+#include <boost/bind.hpp>
+#include <boost/signals/trackable.hpp>
 
+using namespace lyx::support;
 
-LScreen::~LScreen()
-{
-       XFreeGC(fl_get_display(), gc_copy);
-}
+using std::min;
+using std::max;
+using std::endl;
 
+namespace {
 
-void LScreen::reset()
-{
-       XFreeGC(fl_get_display(), gc_copy);
-       // the cursor isnt yet visible
-       cursor_visible = false;
-       cursor_pixmap = 0;
-       cursor_pixmap_x = 0;
-       cursor_pixmap_y = 0;
-       cursor_pixmap_w = 0;
-       cursor_pixmap_h = 0;
-
-       // We need this GC
-       gc_copy = createGC();
-}
-void LScreen::setCursorColor()
-{
-       if (!lyxColorHandler.get()) return;
+class SplashScreen : boost::noncopyable, boost::signals::trackable {
+public:
+       /// This is a singleton class. Get the instance.
+       static SplashScreen const & get();
+       ///
+       lyx::graphics::Image const * image() const { return loader_.image(); }
+       ///
+       string const & text() const { return text_; }
+       ///
+       LyXFont const & font() const { return font_; }
+       ///
+       void connect(lyx::graphics::Loader::slot_type const & slot) const {
+               loader_.connect(slot);
+       }
+       ///
+       void startLoading() const {
+               if (loader_.status() == lyx::graphics::WaitingToLoad)
+                       loader_.startLoading();
+       }
 
-       GC gc = lyxColorHandler->getGCForeground(LColor::cursor);
+private:
+       /** Make the c-tor private so we can control how many objects
+        *  are instantiated.
+        */
+       SplashScreen();
 
-       XGCValues val;
-       XGetGCValues(fl_get_display(),
-                    gc, GCForeground, &val);
-       XChangeGC(fl_get_display(), gc_copy, GCForeground, &val);
-}
+       ///
+       lyx::graphics::Loader loader_;
+       /// The text to be written on top of the pixmap
+       string const text_;
+       /// in this font...
+       LyXFont font_;
+};
 
 
-void LScreen::redraw(LyXText * text, BufferView * bv)
+SplashScreen const & SplashScreen::get()
 {
-       drawFromTo(text, bv, 0, owner.height(), 0, 0, text == bv->text);
-       expose(0, 0, owner.workWidth(), owner.height());
-       if (cursor_visible) {
-               cursor_visible = false;
-               bv->showCursor();
-       }
+       static SplashScreen singleton;
+       return singleton;
 }
 
 
-void LScreen::expose(int x, int y, int exp_width, int exp_height)
+SplashScreen::SplashScreen()
+       : text_(lyx_version ? lyx_version : "unknown")
 {
-       XCopyArea(fl_get_display(),
-                 owner.getPixmap(),
-                 owner.getWin(),
-                 gc_copy,
-                 x, y,
-                 exp_width, exp_height,
-                 x + owner.xpos(),
-                 y + owner.ypos());
-}
+       if (!lyxrc.show_banner)
+               return;
 
+       string const file = LibFileSearch("images", "banner", "ppm");
+       if (file.empty())
+               return;
 
-void LScreen::drawFromTo(LyXText * text, BufferView * bv,
-                          int y1, int y2, int y_offset, int x_offset,
-                          bool internal)
-{
-       int y_text = text->first_y + y1;
-
-       // get the first needed row
-       Row * row = text->getRowNearY(y_text);
-       // y_text is now the real beginning of the row
-
-       int y = y_text - text->first_y;
-       // y1 is now the real beginning of row on the screen
-
-       while (row != 0 && y < y2) {
-               LyXText::text_status st = text->status();
-               text->getVisibleRow(bv, y + y_offset,
-                                   x_offset, row, y + text->first_y);
-               internal = internal && (st != LyXText::CHANGED_IN_DRAW);
-               while (internal && text->status() == LyXText::CHANGED_IN_DRAW) {
-                       text->fullRebreak(bv);
-                       st = LyXText::NEED_MORE_REFRESH;
-                       text->setCursor(bv, text->cursor.par(),
-                                       text->cursor.pos());
-                       text->status(bv, st);
-                       // we should be sure our row-pointer is still valid, so it's
-                       // better to recompute it.
-                       y_text = y + text->first_y;
-                       row = text->getRowNearY(y_text);
-                       y = y_text - text->first_y;
-                       text->getVisibleRow(bv, y + y_offset,
-                                           x_offset, row, y + text->first_y);
-               }
-               y += row->height();
-               row = row->next();
-       }
-       force_clear = false;
+       // The font used to display the version info
+       font_.setFamily(LyXFont::SANS_FAMILY);
+       font_.setSeries(LyXFont::BOLD_SERIES);
+       font_.setSize(LyXFont::SIZE_NORMAL);
+       font_.setColor(LColor::yellow);
 
-       // maybe we have to clear the screen at the bottom
-       if ((y < y2) && text->bv_owner) {
-               owner.getPainter().fillRectangle(0, y,
-                                                owner.workWidth(),
-                                                y2 - y,
-                                              LColor::bottomarea);
-       }
+       // Load up the graphics file
+       loader_.reset(file);
 }
 
-
-void LScreen::drawOneRow(LyXText * text, BufferView * bv, Row * row,
-                          int y_text, int y_offset, int x_offset)
-{
-       int const y = y_text - text->first_y + y_offset;
-
-       if (((y + row->height()) > 0) &&
-           ((y - row->height()) <= static_cast<int>(owner.height()))) {
-               // ok there is something visible
-               text->getVisibleRow(bv, y, x_offset, row, y + text->first_y);
-       }
-       force_clear = false;
-}
+} // namespace anon
 
 
-/* draws the screen, starting with textposition y. uses as much already
- * printed pixels as possible */
-void LScreen::draw(LyXText * text, BufferView * bv, unsigned int y)
+LyXScreen::LyXScreen()
+       : cursor_visible_(false), greyed_out_(true)
 {
-       if (cursor_visible) hideCursor();
-
-       int const old_first = text->first_y;
-       bool internal = (text == bv->text);
-       text->first_y = y;
-
-       // is any optimiziation possible?
-       if ((y - old_first) < owner.height()
-           && (old_first - y) < owner.height())
-       {
-               if (text->first_y < old_first) {
-                       drawFromTo(text, bv, 0,
-                                  old_first - text->first_y, 0, 0, internal);
-                       XCopyArea (fl_get_display(),
-                                  owner.getWin(),
-                                  owner.getWin(),
-                                  gc_copy,
-                                  owner.xpos(),
-                                  owner.ypos(),
-                                  owner.workWidth(),
-                                  owner.height() - old_first + text->first_y,
-                                  owner.xpos(),
-                                  owner.ypos() + old_first - text->first_y
-                               );
-                       // expose the area drawn
-                       expose(0, 0,
-                              owner.workWidth(),
-                              old_first - text->first_y);
-               } else  {
-                       drawFromTo(text, bv,
-                                  owner.height() + old_first - text->first_y,
-                                  owner.height(), 0, 0, internal);
-                       XCopyArea (fl_get_display(),
-                                  owner.getWin(),
-                                  owner.getWin(),
-                                  gc_copy,
-                                  owner.xpos(),
-                                  owner.ypos() + text->first_y - old_first,
-                                  owner.workWidth(),
-                                  owner.height() + old_first - text->first_y,
-                                  owner.xpos(),
-                                  owner.ypos());
-                       // expose the area drawn
-                       expose(0, owner.height() + old_first - text->first_y,
-                              owner.workWidth(), text->first_y - old_first);
-               }
-       } else {
-               // make a dumb new-draw
-               drawFromTo(text, bv, 0, owner.height(), 0, 0, internal);
-               expose(0, 0, owner.workWidth(), owner.height());
+       // Start loading the pixmap as soon as possible
+       if (lyxrc.show_banner) {
+               SplashScreen const & splash = SplashScreen::get();
+               splash.connect(boost::bind(&LyXScreen::greyOut, this));
+               splash.startLoading();
        }
 }
 
 
-void LScreen::showCursor(LyXText const * text, BufferView const * bv)
+LyXScreen::~LyXScreen()
 {
-       if (!cursor_visible) {
-               Cursor_Shape shape = BAR_SHAPE;
-               if (text->real_current_font.language() !=
-                   bv->buffer()->params.language
-                   || text->real_current_font.isVisibleRightToLeft()
-                   != bv->buffer()->params.language->RightToLeft())
-                       shape = (text->real_current_font.isVisibleRightToLeft())
-                               ? REVERSED_L_SHAPE : L_SHAPE;
-               showManualCursor(text, text->cursor.x(), text->cursor.y(),
-                                font_metrics::maxAscent(text->real_current_font),
-                                font_metrics::maxDescent(text->real_current_font),
-                                shape);
-       }
 }
 
 
-/* returns true if first has changed, otherwise false */
-bool LScreen::fitManualCursor(LyXText * text, BufferView * bv,
-                               int /*x*/, int y, int asc, int desc)
+void LyXScreen::showCursor(BufferView & bv)
 {
-       int newtop = text->first_y;
+       // this is needed to make sure we copy back the right
+       // pixmap on the hide for the Qt frontend
+       lyx_gui::sync_events();
 
-       if (y + desc - text->first_y >= static_cast<int>(owner.height()))
-               newtop = y - 3 * owner.height() / 4;  // the scroll region must be so big!!
-       else if (y - asc < text->first_y
-               && text->first_y > 0) {
-               newtop = y - owner.height() / 4;
-       }
-
-       newtop = max(newtop, 0); // can newtop ever be < 0? (Lgb)
-
-       if (newtop != text->first_y) {
-               draw(text, bv, newtop);
-               text->first_y = newtop;
-               return true;
-       }
-       return false;
-}
+       if (cursor_visible_)
+               return;
 
+       if (!bv.available())
+               return;
 
-void LScreen::showManualCursor(LyXText const * text, int x, int y,
-                                int asc, int desc, Cursor_Shape shape)
-{
-       // Update the cursor color.
-       setCursorColor();
+       Cursor_Shape shape = BAR_SHAPE;
 
-       int const y1 = max(y - text->first_y - asc, 0);
-       int const y_tmp = min(y - text->first_y + desc,
-                             static_cast<int>(owner.height()));
+       LyXText const & text = *bv.getLyXText();
+       LyXFont const & realfont = text.real_current_font;
+       BufferParams const & bp = bv.buffer()->params;
+       bool const samelang = realfont.language() == bp.language;
+       bool const isrtl = realfont.isVisibleRightToLeft();
 
-       // Secure against very strange situations
-       int const y2 = max(y_tmp, y1);
+       if (!samelang || isrtl != bp.language->RightToLeft()) {
+               shape = L_SHAPE;
+               if (isrtl)
+                       shape = REVERSED_L_SHAPE;
+       }
 
-       if (cursor_pixmap) {
-               XFreePixmap(fl_get_display(), cursor_pixmap);
-               cursor_pixmap = 0;
+       // The ERT language hack needs fixing up
+       if (realfont.language() == latex_language)
+               shape = BAR_SHAPE;
+
+       int ascent = font_metrics::maxAscent(realfont);
+       int descent = font_metrics::maxDescent(realfont);
+       int h = ascent + descent;
+       int x = 0;
+       int y = 0;
+       int const top_y = bv.top_y();
+
+       if (bv.theLockingInset()) {
+               // Would be nice to clean this up to make some understandable sense...
+               UpdatableInset * inset = bv.theLockingInset();
+               inset->getCursor(bv, x, y);
+
+               // Non-obvious. The reason we have to have these
+               // extra checks is that the ->getCursor() calls rely
+               // on the inset's own knowledge of its screen position.
+               // If we scroll up or down in a big enough increment, the
+               // inset->draw() is not called: this doesn't update
+               // inset.top_baseline, so getCursor() returns an old value.
+               // Ugly as you like.
+               int bx, by;
+               inset->getCursorPos(&bv, bx, by);
+               by += inset->insetInInsetY() + bv.text->cursor.iy();
+               if (by < top_y)
+                       return;
+               if (by > top_y + workarea().workHeight())
+                       return;
+       } else {
+               x = bv.text->cursor.x();
+               y = bv.text->cursor.y();
+               y -= top_y;
        }
 
-       if (y2 > 0 && y1 < int(owner.height())) {
-               cursor_pixmap_h = y2 - y1 + 1;
-               cursor_pixmap_y = y1;
-
-               switch (shape) {
-               case BAR_SHAPE:
-                       cursor_pixmap_w = 1;
-                       cursor_pixmap_x = x;
-                       break;
-               case L_SHAPE:
-                       cursor_pixmap_w = cursor_pixmap_h/3;
-                       cursor_pixmap_x = x;
-                       break;
-               case REVERSED_L_SHAPE:
-                       cursor_pixmap_w = cursor_pixmap_h/3;
-                       cursor_pixmap_x = x - cursor_pixmap_w + 1;
-                       break;
-               }
+       y -= ascent;
 
-               cursor_pixmap =
-                       XCreatePixmap (fl_get_display(),
-                                      fl_root,
-                                      cursor_pixmap_w,
-                                      cursor_pixmap_h,
-                                      fl_get_visual_depth());
-               XCopyArea (fl_get_display(),
-                          owner.getWin(),
-                          cursor_pixmap,
-                          gc_copy,
-                          owner.xpos() + cursor_pixmap_x,
-                          owner.ypos() + cursor_pixmap_y,
-                          cursor_pixmap_w,
-                          cursor_pixmap_h,
-                          0, 0);
-               XDrawLine(fl_get_display(),
-                         owner.getWin(),
-                         gc_copy,
-                         x + owner.xpos(),
-                         y1 + owner.ypos(),
-                         x + owner.xpos(),
-                         y2 + owner.ypos());
-               switch (shape) {
-               case BAR_SHAPE:
-                       break;
-               case L_SHAPE:
-               case REVERSED_L_SHAPE:
-                       int const rectangle_h = (cursor_pixmap_h + 10) / 20;
-                       XFillRectangle(fl_get_display(),
-                                      owner.getWin(),
-                                      gc_copy,
-                                      cursor_pixmap_x + owner.xpos(),
-                                      y2 - rectangle_h + 1 + owner.ypos(),
-                                      cursor_pixmap_w - 1, rectangle_h);
-                       break;
-               }
+       // if it doesn't fit entirely on the screen, don't try to show it
+       if (y < 0 || y + h > workarea().workHeight())
+               return;
 
-       }
-       cursor_visible = true;
+       cursor_visible_ = true;
+       showCursor(x, y, h, shape);
 }
 
 
-void LScreen::hideCursor()
+void LyXScreen::hideCursor()
 {
-       if (!cursor_visible) return;
-
-       if (cursor_pixmap) {
-               XCopyArea (fl_get_display(),
-                          cursor_pixmap,
-                          owner.getWin(),
-                          gc_copy,
-                          0, 0,
-                          cursor_pixmap_w, cursor_pixmap_h,
-                          cursor_pixmap_x + owner.xpos(),
-                          cursor_pixmap_y + owner.ypos());
-       }
-       cursor_visible = false;
+       if (!cursor_visible_)
+               return;
+
+       cursor_visible_ = false;
+       removeCursor();
 }
 
 
-void LScreen::cursorToggle(BufferView * bv) const
+void LyXScreen::toggleCursor(BufferView & bv)
 {
-       if (cursor_visible)
-               bv->hideCursor();
+       if (cursor_visible_)
+               hideCursor();
        else
-               bv->showCursor();
+               showCursor(bv);
 }
 
 
-/* returns a new top so that the cursor is visible */
-unsigned int LScreen::topCursorVisible(LyXText const * text)
+bool LyXScreen::fitManualCursor(BufferView * bv, LyXText * text,
+       int /*x*/, int y, int asc, int desc)
 {
-       int newtop = text->first_y;
+       int const vheight = workarea().workHeight();
+       int const topy = bv->top_y();
+       int newtop = topy;
+       
+       
+       if (y + desc - topy >= vheight)
+               newtop = y - 3 * vheight / 4;  // the scroll region must be so big!!
+       else if (y - asc < topy && topy > 0)
+               newtop = y - vheight / 4;
+
+       newtop = max(newtop, 0); // can newtop ever be < 0? (Lgb)
+
+       if (newtop == topy)
+               return false;
+
+       bv->top_y(newtop);
+       return true;
+}
+
 
-       Row * row = text->cursor.row();
+unsigned int LyXScreen::topCursorVisible(LyXText * text)
+{
+       LyXCursor const & cursor = text->cursor;
+       int top_y = text->bv()->top_y();
+       int newtop = top_y;
+       int const vheight = workarea().workHeight();
 
-       // Is this a hack? Yes, probably... (Lgb)
-       if (!row)
-               return max(newtop, 0);
+       RowList::iterator row = text->cursorRow();
 
-       if (text->cursor.y() - row->baseline() + row->height()
-           - text->first_y >= owner.height()) {
-               if (row->height() < owner.height()
-                   && row->height() > owner.height() / 4) {
-                       newtop = text->cursor.y()
+       if (int(cursor.y() - row->baseline() + row->height() - top_y) >= vheight) {
+               if (row->height() < vheight
+                   && row->height() > vheight / 4) {
+                       newtop = cursor.y()
                                + row->height()
-                               - row->baseline() - owner.height();
+                               - row->baseline() - vheight;
                } else {
-                       // scroll down
-                       newtop = text->cursor.y()
-                               - owner.height() / 2;   /* the scroll region must be so big!! */
+                       // scroll down, the scroll region must be so big!!
+                       newtop = cursor.y() - vheight / 2;
                }
 
-       } else if (static_cast<int>((text->cursor.y()) - row->baseline()) <
-                  text->first_y && text->first_y > 0) {
-               if (row->height() < owner.height()
-                   && row->height() > owner.height() / 4) {
-                       newtop = text->cursor.y() - row->baseline();
+       } else if (int(cursor.y() - row->baseline()) < top_y && top_y > 0) {
+               if (row->height() < vheight && row->height() > vheight / 4) {
+                       newtop = cursor.y() - row->baseline();
                } else {
                        // scroll up
-                       newtop = text->cursor.y() - owner.height() / 2;
-                       newtop = min(newtop, text->first_y);
+                       newtop = cursor.y() - vheight / 2;
+                       newtop = min(newtop, top_y);
                }
        }
 
-       newtop = max(newtop, 0);
-
-       return newtop;
+       return max(newtop, 0);
 }
 
 
-/* scrolls the screen so that the cursor is visible, if necessary.
-* returns true if a change was made, otherwise false */
-bool LScreen::fitCursor(LyXText * text, BufferView * bv)
+bool LyXScreen::fitCursor(LyXText * text, BufferView * bv)
 {
        // Is a change necessary?
        int const newtop = topCursorVisible(text);
-       bool const result = (newtop != text->first_y);
-       if (result)
-               draw(text, bv, newtop);
+       bool const result = (newtop != bv->top_y());
+       bv->top_y(newtop);
        return result;
 }
 
 
-void LScreen::update(LyXText * text, BufferView * bv,
-                      int y_offset, int x_offset)
+void LyXScreen::redraw(BufferView & bv)
 {
-       switch (text->status()) {
-       case LyXText::NEED_MORE_REFRESH:
-       {
-               int const y = max(int(text->refresh_y - text->first_y), 0);
-               drawFromTo(text, bv, y, owner.height(), y_offset, x_offset);
-               text->refresh_y = 0;
-               // otherwise this is called ONLY from BufferView_pimpl(update)
-               // or we should see to set this flag accordingly
-               if (text != bv->text)
-                       text->status(bv, LyXText::UNCHANGED);
-               expose(0, y, owner.workWidth(), owner.height() - y);
-       }
-       break;
-       case LyXText::NEED_VERY_LITTLE_REFRESH:
-       {
-               // ok I will update the current cursor row
-               drawOneRow(text, bv, text->refresh_row, text->refresh_y,
-                          y_offset, x_offset);
-               // this because if we had a major update the refresh_row could
-               // have been set to 0!
-               if (text->refresh_row) {
-                       // otherwise this is called ONLY from BufferView_pimpl(update)
-                       // or we should see to set this flag accordingly
-                       if (text != bv->text)
-                               text->status(bv, LyXText::UNCHANGED);
-                       expose(0, text->refresh_y - text->first_y + y_offset,
-                                  owner.workWidth(), text->refresh_row->height());
-               }
+       greyed_out_ = !bv.text;
+
+       if (greyed_out_) {
+               greyOut();
+               return;
        }
-       break;
-       case LyXText::CHANGED_IN_DRAW: // just to remove the warning
-       case LyXText::UNCHANGED:
-               // Nothing needs done
-               break;
+
+       workarea().getPainter().start();
+
+       hideCursor();
+
+       int const y = paintText(bv);
+
+       // maybe we have to clear the screen at the bottom
+       int const y2 = workarea().workHeight();
+       if (y < y2 && !bv.text->isInInset()) {
+               workarea().getPainter().fillRectangle(0, y,
+                       workarea().workWidth(), y2 - y,
+                       LColor::bottomarea);
        }
-}
 
+       expose(0, 0, workarea().workWidth(), workarea().workHeight());
 
-void LScreen::toggleSelection(LyXText * text, BufferView * bv,
-                               bool kill_selection,
-                               int y_offset, int x_offset)
-{
-       // only if there is a selection
-       if (!text->selection.set()) return;
-
-       int const bottom = min(
-               max(static_cast<int>(text->selection.end.y()
-                                    - text->selection.end.row()->baseline()
-                                    + text->selection.end.row()->height()),
-                   text->first_y),
-               static_cast<int>(text->first_y + owner.height()));
-       int const top = min(
-               max(static_cast<int>(text->selection.start.y() -
-                                    text->selection.start.row()->baseline()),
-                   text->first_y),
-               static_cast<int>(text->first_y + owner.height()));
-
-       if (kill_selection)
-               text->selection.set(false);
-       drawFromTo(text, bv, top - text->first_y, bottom - text->first_y,
-                  y_offset, x_offset);
-       expose(0, top - text->first_y,
-              owner.workWidth(),
-              bottom - text->first_y - (top - text->first_y));
+       workarea().getPainter().end();
 }
 
 
-void LScreen::toggleToggle(LyXText * text, BufferView * bv,
-                            int y_offset, int x_offset)
+void LyXScreen::greyOut()
 {
-       if (text->toggle_cursor.par() == text->toggle_end_cursor.par()
-           && text->toggle_cursor.pos() == text->toggle_end_cursor.pos())
+       if (!greyed_out_)
                return;
 
-       int const top_tmp = text->toggle_cursor.y()
-               - text->toggle_cursor.row()->baseline();
-       int const bottom_tmp = text->toggle_end_cursor.y()
-               - text->toggle_end_cursor.row()->baseline()
-               + text->toggle_end_cursor.row()->height();
-
-       int const offset = y_offset < 0 ? y_offset : 0;
-       int const bottom = min(max(bottom_tmp, text->first_y),
-                    static_cast<int>(text->first_y + owner.height()))-offset;
-       int const top = min(max(top_tmp, text->first_y),
-                 static_cast<int>(text->first_y + owner.height()))-offset;
-
-       drawFromTo(text, bv, top - text->first_y,
-                  bottom - text->first_y, y_offset,
-                  x_offset);
-       expose(0, top - text->first_y, owner.workWidth(),
-              bottom - text->first_y - (top - text->first_y));
+       workarea().getPainter().start();
+
+       workarea().getPainter().fillRectangle(0, 0,
+               workarea().workWidth(),
+               workarea().workHeight(),
+               LColor::bottomarea);
+
+       // Add a splash screen to the centre of the work area
+       SplashScreen const & splash = SplashScreen::get();
+       lyx::graphics::Image const * const splash_image = splash.image();
+       if (splash_image) {
+               int const w = splash_image->getWidth();
+               int const h = splash_image->getHeight();
+
+               int x = (workarea().workWidth() - w) / 2;
+               int y = (workarea().workHeight() - h) / 2;
+
+               workarea().getPainter().image(x, y, w, h, *splash_image);
+
+               x += 260;
+               y += 265;
+
+               workarea().getPainter().text(x, y, splash.text(), splash.font());
+       }
+       expose(0, 0, workarea().workWidth(), workarea().workHeight());
+       workarea().getPainter().end();
 }