Copy the KDE 3.5 branch to branches/trinity for new KDE 3.5 features.

BUG:215923


git-svn-id: svn://anonsvn.kde.org/home/kde/branches/trinity/kdegraphics@1054174 283d02a7-25f6-0310-bc7c-ecb5cbfe19da

1 files changed, 764 insertions, 0 deletions

diff --git a/kviewshell/documentWidget.cpp b/kviewshell/documentWidget.cpp
new file mode 100644
index 00000000..95b6f771
--- /dev/null
+++ b/kviewshell/documentWidget.cpp
@@ -0,0 +1,764 @@
+//
+// Class: DocumentWidget
+//
+// Widget for displaying TeX DVI files.
+// Part of KDVI- A previewer for TeX DVI files.
+//
+// (C) 2001 Stefan Kebekus
+// Copyright (C) 2004-2005 Wilfried Huss <[email protected]>
+// Distributed under the GPL
+//
+
+#include <config.h>
+
+#include <kaction.h>
+#include <kapplication.h>
+#include <kdebug.h>
+#include <kglobalsettings.h>
+#include <kiconloader.h>
+#include <klocale.h>
+#include <qclipboard.h>
+#include <qcursor.h>
+#include <qimage.h>
+#include <qpainter.h>
+#include <qpixmap.h>
+
+#include "documentWidget.h"
+#include "pageView.h"
+#include "documentPageCache.h"
+#include "hyperlink.h"
+#include "renderedDocumentPagePixmap.h"
+#include "textBox.h"
+
+#include "kvsprefs.h"
+
+//#define DEBUG_DOCUMENTWIDGET
+
+const int DocumentWidget::bottom_right_corner[16] =
+  { 61, 71, 85, 95,
+    71, 78, 89, 96,
+    85, 89, 95, 98,
+    95, 97, 98, 99 };
+
+const int DocumentWidget::bottom_left_corner[16] =
+  { 95, 85, 71, 61,
+    97, 89, 78, 71,
+    98, 95, 89, 85,
+    99, 98, 96, 95 };
+
+const int DocumentWidget::shadow_strip[4] =
+  { 56, 67, 83, 94 };
+
+QColor DocumentWidget::backgroundColorForCorners;
+
+namespace {
+
+/** Holds the icon used as a overlay on pages which are not drawn yet. */
+QPixmap* busyIcon = 0;
+
+/** Internal storages used in the shadow drawing routines in the
+    drawContents method.*/
+QPixmap* URShadow = 0;
+QPixmap* BRShadow = 0;
+QPixmap* BLShadow = 0;
+
+} // namespace anon
+
+
+DocumentWidget::DocumentWidget(QWidget *parent, PageView *sv, DocumentPageCache *cache, const char *name )
+  : QWidget( parent, name ), indexOfUnderlinedLink(-1)
+{
+  moveTool = true;
+
+  selectionNeedsUpdating = false;
+
+  // Variables used in animation.
+  animationCounter = 0;
+  timerIdent       = 0;
+  documentCache    = cache;
+  scrollView       = sv;
+
+  pixmapRequested = false;
+
+  scrollGuide = -1;
+
+  setMouseTracking(true);
+  setFocusPolicy(QWidget::ClickFocus);
+
+  connect(&clearStatusBarTimer, SIGNAL(timeout()), this, SLOT(clearStatusBar()));
+  setBackgroundMode(Qt::NoBackground);
+
+  if (!busyIcon)
+  {
+    busyIcon = new QPixmap(KGlobal::iconLoader()->loadIcon("gear", KIcon::NoGroup, KIcon::SizeMedium));
+
+    URShadow = new QPixmap();
+    BRShadow = new QPixmap();
+    BLShadow = new QPixmap();
+
+    URShadow->resize(4,4);
+    BRShadow->resize(4,4);
+    BLShadow->resize(4,4);
+  }
+}
+
+
+void DocumentWidget::setPageNumber(Q_UINT16 nr)
+{
+  pageNr = nr;
+
+  selectionNeedsUpdating = true;
+
+  // We have to reset this, because otherwise we might crash in the mouseMoveEvent
+  // After switching pages in SinglePageMode or OverviewMode.
+  indexOfUnderlinedLink = -1;
+
+  // Resize Widget if the size of the new page is different than the size of the old page.
+  QSize _pageSize = documentCache->sizeOfPageInPixel(pageNr);
+  if (_pageSize != pageSize())
+  {
+    setPageSize(_pageSize);
+  }
+  update();
+}
+
+QRect DocumentWidget::linkFlashRect()
+{
+  int width = pageSize().width()/(11 - animationCounter);
+  int height = pageSize().height()/(60 - 4 * animationCounter);
+  return QRect((pageSize().width()-width)/2, flashOffset - height/2, width, height);
+}
+
+void DocumentWidget::timerEvent( QTimerEvent *e )
+{
+  if (animationCounter == 0) {
+    killTimer(e->timerId());
+    timerIdent = startTimer(50); // Proceed with the animation in 1/10s intervals
+  }
+
+  animationCounter++;
+
+  QRect flashRect = linkFlashRect();
+  flashRect.addCoords(-1, -1, 1, 1);
+
+  if (animationCounter >= 10) {
+    killTimer(e->timerId());
+    timerIdent       = 0;
+    animationCounter = 0;
+  }
+
+  repaint(flashRect, false);
+}
+
+
+void DocumentWidget::flash(int fo)
+{
+  if (timerIdent != 0)
+  {
+    killTimer(timerIdent);
+    // Delete old flash rectangle
+    animationCounter = 10;
+    QRect flashRect = linkFlashRect();
+    flashRect.addCoords(-1, -1, 1, 1);
+    repaint(flashRect, false);
+  }
+  animationCounter = 0;
+  flashOffset      = fo;
+  timerIdent       = startTimer(50); // Start the animation. The animation proceeds in 1/10s intervals
+}
+
+
+void DocumentWidget::paintEvent(QPaintEvent *e)
+{
+#ifdef DEBUG_DOCUMENTWIDGET
+  kdDebug(1223) << "DocumentWidget::paintEvent() called" << endl;
+#endif
+
+  // Check if this widget is really visible to the user. If not, there
+  // is nothing to do. Remark: if we don't do this, then under QT
+  // 3.2.3 the following happens: when the user changes the zoom
+  // value, all those widgets are updated which the user has EVER
+  // seen, not just those that are visible at the moment. If the
+  // document contains several thousand pages, it is easily possible
+  // that this means that a few hundred of these are re-painted (which
+  // takes substantial time) although perhaps only three widgets are
+  // visible and *should* be updated. I believe this is some error in
+  // QT, but I am not positive about that ---Stefan Kebekus.
+  if (!isVisible())
+  {
+    //kdDebug() << "widget of page " << pageNr << " is not visible. Abort rendering" << endl;
+    kapp->processEvents();
+    return;
+  }
+
+  QPainter p(this);
+  p.setClipRegion(e->region());
+
+  // Paint a black border around the widget
+  p.setRasterOp(Qt::CopyROP);
+  p.setBrush(NoBrush);
+  p.setPen(Qt::black);
+  QRect outlineRect = pageRect();
+  outlineRect.addCoords(-1, -1, 1, 1);
+  p.drawRect(outlineRect);
+
+  // Paint page shadow
+  QColor backgroundColor = colorGroup().mid();
+
+  // (Re-)generate the Pixmaps for the shadow corners, if necessary
+  if (backgroundColor != backgroundColorForCorners)
+  {
+    backgroundColorForCorners = backgroundColor;
+    QImage tmp(4, 4, 32);
+    for(int x=0; x<4; x++)
+      for(int y=0; y<4; y++)
+        tmp.setPixel(x, y, backgroundColor.light(bottom_right_corner[x+4*y]).rgb() );
+    BRShadow->convertFromImage(tmp);
+
+    for(int x=0; x<4; x++)
+      for(int y=0; y<4; y++)
+        tmp.setPixel(x, y, backgroundColor.light(bottom_left_corner[x+4*y]).rgb() );
+    BLShadow->convertFromImage(tmp);
+
+    URShadow->convertFromImage(tmp.mirror(true, true));
+  }
+
+  // Draw right and bottom shadows
+  for(int i=0; i<4; i++)
+  {
+    p.setPen(backgroundColor.light(shadow_strip[i]));
+    // Right shadow
+    p.drawLine(pageSize().width()+i+2, 8, pageSize().width()+i+2, pageSize().height()+2);
+    // Bottom shadow
+    p.drawLine(8, pageSize().height()+i+2, pageSize().width()+2, pageSize().height()+i+2);
+  }
+  // Draw shadow corners
+  p.drawPixmap(pageSize().width()+2, pageSize().height()+2, *BRShadow);
+  p.drawPixmap(4, pageSize().height()+2, *BLShadow);
+  p.drawPixmap(pageSize().width()+2, 4, *URShadow);
+
+  // Draw corners
+  p.fillRect(0, pageSize().height()+2, 4, 4, backgroundColor);
+  p.fillRect(pageSize().width()+2, 0, 4, 4, backgroundColor);
+
+  if (!documentCache->isPageCached(pageNr, pageSize()))
+  {
+    QRect destRect = e->rect().intersect(pageRect());
+    if (KVSPrefs::changeColors() && KVSPrefs::renderMode() == KVSPrefs::EnumRenderMode::Paper)
+      p.fillRect(destRect, KVSPrefs::paperColor());
+    else
+      p.fillRect(destRect, Qt::white);
+
+    // Draw busy indicator.
+    // Im not really sure if this is a good idea.
+    // While it is nice to see an indication that something is happening for pages which
+    // take long to redraw, it gets quite annoing for fast redraws.
+    // TODO: Disable or find something less distractiong.
+    p.drawPixmap(10, 10, *busyIcon);
+
+    if (!pixmapRequested)
+    {
+      // Request page pixmap.
+      pixmapRequested = true;
+      QTimer::singleShot(50, this, SLOT(delayedRequestPage()));
+    }
+    return;
+  }
+
+  RenderedDocumentPagePixmap *pageData = documentCache->getPage(pageNr);
+  if (pageData == 0) {
+#ifdef DEBUG_DOCUMENTWIDGET
+    kdDebug(1223) << "DocumentWidget::paintEvent: no documentPage generated" << endl;
+#endif
+    return;
+  }
+
+  QMemArray<QRect> damagedRects = e->region().rects();
+  for (unsigned int i = 0; i < damagedRects.count(); i++)
+  {
+    // Paint the page where it intersects with the damaged area.
+    QRect destRect = damagedRects[i].intersect(pageRect());
+
+    // The actual page starts at point (1,1) because of the outline.
+    // Therefore we need to shift the destination rectangle.
+    QRect pixmapRect = destRect;
+    pixmapRect.moveBy(-1,-1);
+
+    if (KVSPrefs::changeColors() && KVSPrefs::renderMode() != KVSPrefs::EnumRenderMode::Paper)
+    {
+      // Paint widget contents with accessibility changes.
+      bitBlt ( this, destRect.topLeft(), &pageData->accessiblePixmap(), pixmapRect, CopyROP);
+    }
+    else
+    {
+      // Paint widget contents
+      bitBlt ( this, destRect.topLeft(), pageData, pixmapRect, CopyROP);
+    }
+  }
+  // Underline hyperlinks
+  if (KVSPrefs::underlineLinks() == KVSPrefs::EnumUnderlineLinks::Enabled ||
+      KVSPrefs::underlineLinks() == KVSPrefs::EnumUnderlineLinks::OnlyOnHover)
+  {
+    int h = 2; // Height of line.
+    for(int i = 0; i < (int)pageData->hyperLinkList.size(); i++) 
+    {
+      if (KVSPrefs::underlineLinks() == KVSPrefs::EnumUnderlineLinks::OnlyOnHover && 
+          i != indexOfUnderlinedLink)
+        continue;
+      int x = pageData->hyperLinkList[i].box.left();
+      int w = pageData->hyperLinkList[i].box.width();
+      int y = pageData->hyperLinkList[i].baseline;
+
+      QRect hyperLinkRect(x, y, w, h);
+      if (hyperLinkRect.intersects(e->rect()))
+      {
+#ifdef DEBUG_DOCUMENTWIDGET
+        kdDebug(1223) << "Underline hyperlink \"" << pageData->hyperLinkList[i].linkText << "\"" << endl;
+#endif
+        p.fillRect(x, y, w, h, KGlobalSettings::linkColor());
+      }
+    }
+  }
+
+  // Paint flashing frame, if appropriate
+  if (animationCounter > 0 && animationCounter < 10)
+  {
+    int gbChannel = 255 - (9-animationCounter)*28;
+    p.setPen(QPen(QColor(255, gbChannel, gbChannel), 3));
+    p.drawRect(linkFlashRect());
+  }
+
+  // Mark selected text.
+  TextSelection selection = documentCache->selectedText();
+  if ((selection.getPageNumber() != 0) && (selection.getPageNumber() == pageNr))
+  {
+    if (selectionNeedsUpdating)
+    {
+      //The zoom value has changed, therefore we need to recalculate
+      //the selected region.
+      selectedRegion = pageData->selectedRegion(selection);
+      selectionNeedsUpdating = false;
+    }
+
+    p.setPen(NoPen);
+    p.setBrush(white);
+    p.setRasterOp(Qt::XorROP);
+
+    QMemArray<QRect> selectionRects = selectedRegion.rects();
+
+    for (unsigned int i = 0; i < selectionRects.count(); i++)
+      p.drawRect(selectionRects[i]);
+  }
+
+  // Draw scroll Guide
+  if (scrollGuide >= 0)
+  {
+    // Don't draw over the page shadow
+    p.setClipRegion(e->region().intersect(pageRect()));
+    p.setRasterOp(Qt::CopyROP);
+    p.setPen(Qt::red);
+    p.drawLine(1, scrollGuide, pageSize().width(), scrollGuide);
+  }
+}
+
+void DocumentWidget::drawScrollGuide(int ycoord)
+{
+  //kdDebug() << "draw scroll guide for page " << pageNr << " at y = " << ycoord << endl;
+  scrollGuide = ycoord;
+  update(QRect(1, scrollGuide, pageSize().width(), 1));
+  QTimer::singleShot(1000, this, SLOT(clearScrollGuide()));
+}
+
+void DocumentWidget::clearScrollGuide()
+{
+  //kdDebug() << "clear scroll guide for page " << pageNr << " at y = " << scrollGuide << endl;
+  int temp = scrollGuide;
+  scrollGuide = -1;
+  update(QRect(1, temp, pageSize().width(), 1));
+}
+
+void DocumentWidget::select(const TextSelection& newSelection)
+{
+  // Get a pointer to the page contents
+  RenderedDocumentPage *pageData = documentCache->getPage(pageNr);
+  if (pageData == 0) {
+    kdDebug(1223) << "DocumentWidget::select() pageData for page #" << pageNr << " is empty" << endl;
+    return;
+  }
+
+  documentCache->selectText(newSelection);
+
+  selectedRegion = pageData->selectedRegion(documentCache->selectedText());
+  selectionNeedsUpdating = false;
+
+  update();
+}
+
+void DocumentWidget::selectAll()
+{
+  // pageNr == 0 indicated an invalid page (e.g. page number not yet
+  // set)
+  if (pageNr == 0)
+    return;
+
+  // Get a pointer to the page contents
+  RenderedDocumentPage *pageData = documentCache->getPage(pageNr);
+  if (pageData == 0) {
+    kdDebug(1223) << "DocumentWidget::selectAll() pageData for page #" << pageNr << " is empty" << endl;
+    return;
+  }
+
+  TextSelection selection;
+  // mark everything as selected
+  QString selectedText("");
+  for(unsigned int i = 0; i < pageData->textBoxList.size(); i++) {
+    selectedText += pageData->textBoxList[i].text;
+    selectedText += "\n";
+  }
+  selection.set(pageNr, 0, pageData->textBoxList.size()-1, selectedText);
+
+  selectedRegion = pageData->selectedRegion(selection);
+
+  documentCache->selectText(selection);
+
+  // Re-paint
+  update();
+}
+
+
+void DocumentWidget::mousePressEvent ( QMouseEvent * e )
+{
+#ifdef DEBUG_DOCUMENTWIDGET
+  kdDebug(1223) << "DocumentWidget::mousePressEvent(...) called" << endl;
+#endif
+  
+  // Make sure the event is passed on to the higher-level widget;
+  // otherwise QT gets the coordinated in the mouse move events wrong
+  e->ignore();
+
+  // pageNr == 0 indicated an invalid page (e.g. page number not yet
+  // set)
+  if (pageNr == 0)
+    return;
+
+  // Get a pointer to the page contents
+  RenderedDocumentPage *pageData = documentCache->getPage(pageNr);
+  if (pageData == 0) {
+    kdDebug(1223) << "DocumentWidget::selectAll() pageData for page #" << pageNr << " is empty" << endl;
+    return;
+  }
+
+  // Check if the mouse is pressed on a regular hyperlink
+  if (e->button() == LeftButton) {
+    if (pageData->hyperLinkList.size() > 0)
+      for(unsigned int i = 0; i < pageData->hyperLinkList.size(); i++) {
+        if (pageData->hyperLinkList[i].box.contains(e->pos())) {
+          emit(localLink(pageData->hyperLinkList[i].linkText));
+          return;
+        }
+      }
+    if (moveTool)
+      setCursor(Qt::SizeAllCursor);
+    else
+      setCursor(Qt::IbeamCursor);
+  }
+
+  if (e->button() == RightButton || (!moveTool && e->button() == LeftButton))
+  {
+    setCursor(Qt::IbeamCursor);
+    // If Shift is not pressed clear the current selection,
+    // otherwise modify the existing selection.
+    if (!(e->state() & ShiftButton))
+    {
+      firstSelectedPoint = e->pos();
+      selectedRectangle = QRect();
+      selectedRegion = QRegion();
+      emit clearSelection();
+    }
+  }
+}
+
+
+void DocumentWidget::mouseReleaseEvent ( QMouseEvent *e )
+{
+  // Make sure the event is passed on to the higher-level widget;
+  // otherwise the mouse cursor in the centeringScrollview is wrong
+  e->ignore();
+
+  if (e->button() == RightButton || (!moveTool && e->button() == LeftButton))
+  {
+    // If the selectedRectangle is empty then there was only a single right click.
+    if (firstSelectedPoint == e->pos())
+    {
+      if (pageNr == 0)
+        return;
+
+      // Get a pointer to the page contents
+      RenderedDocumentPage* pageData = documentCache->getPage(pageNr);
+      if (pageData == 0) 
+      {
+        kdDebug(1223) << "DocumentWidget::mouseReleaseEvent() pageData for page #" << pageNr << " is empty" << endl;
+        return;
+      }
+
+      TextSelection newTextSelection = pageData->select(firstSelectedPoint);
+      updateSelection(newTextSelection);
+    }
+  }
+
+  //Reset the cursor to the usual arrow if we use the move tool, and
+  // The textselection cursor if we use the selection tool.
+  setStandardCursor();
+}
+
+
+void DocumentWidget::mouseMoveEvent ( QMouseEvent * e )
+{
+#ifdef DEBUG_DOCUMENTWIDGET
+  kdDebug(1223) << "DocumentWidget::mouseMoveEvent(...) called" << endl;
+#endif
+
+
+  // pageNr == 0 indicated an invalid page (e.g. page number not yet
+  // set)
+  if (pageNr == 0)
+    return;
+
+  // Get a pointer to the page contents
+  RenderedDocumentPage *pageData = documentCache->getPage(pageNr);
+  if (pageData == 0) {
+    kdDebug(1223) << "DocumentWidget::selectAll() pageData for page #" << pageNr << " is empty" << endl;
+    return;
+  }
+
+  // If no mouse button pressed
+  if (e->state() == 0) {
+    // Remember the index of the underlined link.
+    int lastUnderlinedLink = indexOfUnderlinedLink;
+    // go through hyperlinks
+    for(unsigned int i = 0; i < pageData->hyperLinkList.size(); i++) {
+      if (pageData->hyperLinkList[i].box.contains(e->pos())) {
+        clearStatusBarTimer.stop();
+        setCursor(pointingHandCursor);
+        QString link = pageData->hyperLinkList[i].linkText;
+        if ( link.startsWith("#") )
+          link = link.remove(0,1);
+
+        emit setStatusBarText( i18n("Link to %1").arg(link) );
+
+        indexOfUnderlinedLink = i;
+        if (KVSPrefs::underlineLinks() == KVSPrefs::EnumUnderlineLinks::OnlyOnHover &&
+            indexOfUnderlinedLink != lastUnderlinedLink)
+        {
+          QRect newUnderline = pageData->hyperLinkList[i].box;
+          // Increase Rectangle so that the whole line really lines in it.
+          newUnderline.addCoords(0, 0, 0, 2);
+          // Redraw widget
+          update(newUnderline);
+
+          if (lastUnderlinedLink != -1 && lastUnderlinedLink < pageData->hyperLinkList.size())
+          {
+            // Erase old underline
+            QRect oldUnderline = pageData->hyperLinkList[lastUnderlinedLink].box;
+            oldUnderline.addCoords(0, 0, 0, 2);
+            update(oldUnderline);
+          }
+        }
+        return;
+      }
+    }
+    // Whenever we reach this the mouse hovers no link.
+    indexOfUnderlinedLink = -1;
+    if (KVSPrefs::underlineLinks() == KVSPrefs::EnumUnderlineLinks::OnlyOnHover &&
+        lastUnderlinedLink != -1 && lastUnderlinedLink < pageData->hyperLinkList.size())
+    {
+      // Erase old underline
+      QRect oldUnderline = pageData->hyperLinkList[lastUnderlinedLink].box;
+      // Increase Rectangle so that the whole line really lines in it.
+      oldUnderline.addCoords(0, 0, 0, 2);
+      // Redraw widget
+      update(oldUnderline);
+    }
+    // Cursor not over hyperlink? Then let the cursor be the usual arrow if we use the move tool, and
+    // The textselection cursor if we use the selection tool.
+    setStandardCursor();
+  }
+
+  if (!clearStatusBarTimer.isActive())
+    clearStatusBarTimer.start(200, true); // clear the statusbar after 200 msec.
+
+  // Left mouse button pressed -> Text scroll function
+  if ((e->state() & LeftButton) != 0 && moveTool)
+  {
+    // Pass the mouse event on to the owner of this widget ---under
+    // normal circumstances that is the centeringScrollView which will
+    // then scroll the scrollview contents
+    e->ignore();
+  }
+
+  // Right mouse button pressed -> Text copy function
+  if ((e->state() & RightButton) != 0 || (!moveTool && (e->state() & LeftButton != 0)))
+  {
+    if (selectedRectangle.isEmpty()) {
+      firstSelectedPoint = e->pos();
+      selectedRectangle.setRect(e->pos().x(),e->pos().y(),1,1);
+    } else {
+      int lx = e->pos().x() < firstSelectedPoint.x() ? e->pos().x() : firstSelectedPoint.x();
+      int rx = e->pos().x() > firstSelectedPoint.x() ? e->pos().x() : firstSelectedPoint.x();
+      int ty = e->pos().y() < firstSelectedPoint.y() ? e->pos().y() : firstSelectedPoint.y();
+      int by = e->pos().y() > firstSelectedPoint.y() ? e->pos().y() : firstSelectedPoint.y();
+      selectedRectangle.setCoords(lx,ty,rx,by);
+    }
+
+    // Now that we know the rectangle, we have to find out which words
+    // intersect it!
+    TextSelection newTextSelection = pageData->select(selectedRectangle);
+
+    updateSelection(newTextSelection);
+  }
+}
+
+void DocumentWidget::updateSelection(const TextSelection& newTextSelection)
+{
+  if (newTextSelection != documentCache->selectedText())
+  {
+    if (newTextSelection.isEmpty())
+    {
+      // Clear selection
+      documentCache->deselectText();
+      selectedRectangle = QRect();
+      selectedRegion = QRegion();
+      update();
+    }
+    else
+    {
+      if (pageNr == 0)
+        return;
+
+      // Get a pointer to the page contents
+      RenderedDocumentPage* pageData = documentCache->getPage(pageNr);
+      if (pageData == 0) 
+      {
+        kdDebug(1223) << "DocumentWidget::mouseReleaseEvent() pageData for page #" << pageNr << " is empty" << endl;
+        return;
+      }
+
+      documentCache->selectText(newTextSelection);
+
+      QRegion newlySelectedRegion = pageData->selectedRegion(documentCache->selectedText());
+
+      // Compute the region that needs to be updated
+      QRegion updateRegion;
+      if(!selectedRegion.isEmpty())
+      {
+        updateRegion = newlySelectedRegion.eor(selectedRegion);
+      }
+      else
+      {
+        updateRegion = newlySelectedRegion;
+      }
+
+      selectedRegion = newlySelectedRegion;
+
+      QMemArray<QRect> rectangles = updateRegion.rects();
+      for (unsigned int i = 0; i < rectangles.count(); i++)
+      {
+        repaint(rectangles[i]);
+      }
+    }
+  }
+}
+
+
+void DocumentWidget::clearStatusBar()
+{
+  emit setStatusBarText( QString::null );
+}
+
+
+void DocumentWidget::delayedRequestPage()
+{
+  if (!isVisible())
+  {
+    // We only want to calculate the page pixmap for widgets that are currently visible.
+    // When we are fast scrolling thru the document many paint events are created, that
+    // are often not needed anymore at the time the eventloop executes them.
+
+    //kdDebug() << "delayedRequest: widget of page " << pageNr << " is not visible. Abort rendering" << endl;
+    pixmapRequested = false;
+    kapp->processEvents();
+    return;
+  }
+
+  documentCache->getPage(pageNr);
+  pixmapRequested = false;
+  update();
+
+  // If more widgets need updateing at the some time, the next line allows them to be
+  // displayed one after another. Widthout it all widgets are updated after all the rendering
+  // is completed. This is especially noticable in overview mode. After the change to a seperate
+  // rendering thread this will probably not be needed anymore.
+  kapp->processEvents();
+}
+
+QSize DocumentWidget::pageSize() const
+{
+  // Substract size of the shadow.
+  return size() - QSize(6, 6);
+}
+
+QRect DocumentWidget::pageRect() const
+{
+  QRect boundingRect = rect();
+  // Substract the shadow.
+  boundingRect.addCoords(1,1,-5,-5);
+  return boundingRect;
+}
+
+void DocumentWidget::setPageSize(const QSize& pageSize)
+{
+  // When the page size changes this means either the paper size
+  // has been changed, or the zoomlevel has been changed.
+  // If the zoomlevel changes we need to recalculate the selected
+  // region. We do this always, just to be on the safe side.
+  selectionNeedsUpdating = true;
+
+  // Add size of the shadow.
+  resize(pageSize + QSize(6,6));
+}
+
+void DocumentWidget::setPageSize(int width, int height)
+{
+  setPageSize(QSize(width, height));
+}
+
+
+void DocumentWidget::slotEnableMoveTool(bool enable)
+{
+  moveTool = enable;
+
+  setStandardCursor();
+}
+
+
+void DocumentWidget::setStandardCursor()
+{
+  if (moveTool)
+  {
+    setCursor(Qt::arrowCursor);
+  }
+  else
+  {
+    setCursor(Qt::IbeamCursor);
+  }
+}
+
+
+bool DocumentWidget::isVisible()
+{
+  QRect visibleRect(scrollView->contentsX(), scrollView->contentsY(), scrollView->visibleWidth(), scrollView->visibleHeight());
+  QRect widgetRect(scrollView->childX(this), scrollView->childY(this), width(), height());
+  return widgetRect.intersects(visibleRect);
+}
+
+#include "documentWidget.moc"