* kpdf page rotate options

* kdvi options dialog enhancements
* djvu plugin for kviewshell

git-svn-id: svn://anonsvn.kde.org/home/kde/branches/trinity/kdegraphics@1062216 283d02a7-25f6-0310-bc7c-ecb5cbfe19da

9 files changed, 111 insertions, 24 deletions

diff --git a/kpdf/core/generator.h b/kpdf/core/generator.h
index ca0ea015..e0c892fd 100644
--- a/kpdf/core/generator.h
+++ b/kpdf/core/generator.h
@@ -92,8 +92,8 @@ class Generator : public QObject
  */
 struct PixmapRequest
 {
-    PixmapRequest( int rId, int n, int w, int h, int p, bool a = false )
-        : id( rId ), pageNumber( n ), width( w ), height( h ),
+    PixmapRequest( int rId, int n, int w, int h, int p, bool a = false, int r = 0 )
+        : id( rId ), pageNumber( n ), width( w ), height( h ), rotation( r ),
         priority( p ), async( a ), page( 0 )  {};
 
     // observer id
@@ -102,6 +102,7 @@ struct PixmapRequest
     int pageNumber;
     int width;
     int height;
+    int rotation;
     // asyncronous request priority (less is better, 0 is max)
     int priority;
     // generate the pixmap in a thread and notify observer when done
diff --git a/kpdf/core/generator_pdf/generator_pdf.cpp b/kpdf/core/generator_pdf/generator_pdf.cpp
index 7ad34152..35020e56 100644
--- a/kpdf/core/generator_pdf/generator_pdf.cpp
+++ b/kpdf/core/generator_pdf/generator_pdf.cpp
@@ -316,7 +316,8 @@ void PDFGenerator::generatePixmap( PixmapRequest * request )
     // 1. Set OutputDev parameters and Generate contents
     // note: thread safety is set on 'false' for the GUI (this) thread
     kpdfOutputDev->setParams( request->width, request->height, genObjectRects, genObjectRects, false );
-    pdfdoc->displayPage( kpdfOutputDev, page->number() + 1, fakeDpiX, fakeDpiY, 0, false, true, false );
+    pdfdoc->displayPage( kpdfOutputDev, page->number() + 1, fakeDpiX, fakeDpiY, request->rotation,
+                         false, true, false );
     if ( genObjectRects )
         pdfdoc->processLinks( kpdfOutputDev, page->number() + 1 );
 
@@ -1225,7 +1226,7 @@ void PDFPixmapGeneratorThread::run()
     d->generator->kpdfOutputDev->setParams( width, height, 
                                             genObjectRects, genObjectRects, TRUE /*thread safety*/ );
     d->generator->pdfdoc->displayPage( d->generator->kpdfOutputDev, page->number() + 1,
-                                       fakeDpiX, fakeDpiY, 0, false, true, false );
+                                       fakeDpiX, fakeDpiY, d->currentRequest->rotation, false, true, false );
     if ( genObjectRects )
         d->generator->pdfdoc->processLinks( d->generator->kpdfOutputDev, page->number() + 1 );
 
diff --git a/kpdf/core/page.cpp b/kpdf/core/page.cpp
index e6a847a8..70bc71bc 100644
--- a/kpdf/core/page.cpp
+++ b/kpdf/core/page.cpp
@@ -27,10 +27,40 @@ KPDFPage::KPDFPage( uint page, float w, float h, int r )
     : m_number( page ), m_rotation( r ), m_width( w ), m_height( h ),
     m_bookmarked( false ), m_text( 0 ), m_transition( 0 )
 {
+    setRotation( r );
+}
+
+KPDFPage::~KPDFPage()
+{
+    deletePixmapsAndRects();
+    deleteHighlights();
+    delete m_text;
+    delete m_transition;
+}
+
+void KPDFPage::rotate90degrees()
+    {
+        float w = m_width;
+        m_width = m_height;
+        m_height = w;
+
+        // avoid Division-By-Zero problems in the program
+
+        if ( m_width <= 0 )
+        m_width = 1;
+        if ( m_height <= 0 )
+        m_height = 1;
+
+        deletePixmapsAndRects();
+    }
+
+void KPDFPage::setRotation( int r )
+{
     // if landscape swap width <-> height (rotate 90deg CCW)
     if ( r == 90 || r == 270 )
     {
-        m_width = h;
+        float w = m_width;
+        m_width = m_height;
         m_height = w;
     }
     // avoid Division-By-Zero problems in the program
@@ -38,17 +68,10 @@ KPDFPage::KPDFPage( uint page, float w, float h, int r )
         m_width = 1;
     if ( m_height <= 0 )
         m_height = 1;
-}
 
-KPDFPage::~KPDFPage()
-{
     deletePixmapsAndRects();
-    deleteHighlights();
-    delete m_text;
-    delete m_transition;
 }
 
-
 bool KPDFPage::hasPixmap( int id, int width, int height ) const
 {
     if ( !m_pixmaps.contains( id ) )
diff --git a/kpdf/core/page.h b/kpdf/core/page.h
index ebd6e522..4a8be71d 100644
--- a/kpdf/core/page.h
+++ b/kpdf/core/page.h
@@ -120,6 +120,9 @@ class KPDFPage
         void deletePixmapsAndRects();
         void deleteHighlights( int s_id = -1 );
 
+        void setRotation( int r );
+        void rotate90degrees();
+
     private:
         friend class PagePainter;
         int m_number, m_rotation;
diff --git a/kpdf/part.rc b/kpdf/part.rc
index aa7409c8..194e94ac 100644
--- a/kpdf/part.rc
+++ b/kpdf/part.rc
@@ -1,5 +1,5 @@
 <!DOCTYPE kpartgui SYSTEM "kpartgui.dtd">
-<kpartgui name="kpdf_part" version="18">
+<kpartgui name="kpdf_part" version="19">
 <MenuBar>
   <Menu name="file"><text>&amp;File</text>
     <Action name="save" group="file_save"/>
@@ -19,6 +19,8 @@
     <Action name="zoom_fit_width"/>
     <Action name="zoom_fit_page"/>
     <Action name="zoom_fit_rect"/>
+    <Action name="rotate_right"/>
+    <Action name="rotate_left"/>
     <Separator/>
     <Action name="view_continuous"/>
     <Action name="view_twopages"/>
@@ -53,6 +55,8 @@
   <Action name="zoom_in"/>
   <Action name="zoom_to" />
   <Action name="zoom_out"/>
+  <Action name="rotate_left"/>
+  <Action name="rotate_right"/>
   <Separator/>
   <Action name="zoom_fit_width"/>
   <Action name="zoom_fit_page"/>
diff --git a/kpdf/shell/kpdf.desktop b/kpdf/shell/kpdf.desktop
index a276611d..6cde8a92 100644
--- a/kpdf/shell/kpdf.desktop
+++ b/kpdf/shell/kpdf.desktop
@@ -78,5 +78,5 @@ Icon=kpdf
 Type=Application
 DocPath=kpdf/index.html
 InitialPreference=7
-Categories=Qt;KDE;Graphics;Viewer;
+Categories=Qt;KDE;Office;Viewer;
 
diff --git a/kpdf/ui/pageview.cpp b/kpdf/ui/pageview.cpp
index 247f1b1b..866b8d66 100644
--- a/kpdf/ui/pageview.cpp
+++ b/kpdf/ui/pageview.cpp
@@ -71,6 +71,7 @@ public:
     // view layout (columns and continuous in Settings), zoom and mouse
     PageView::ZoomMode zoomMode;
     float zoomFactor;
+    int rotation;
     PageView::MouseMode mouseMode;
     QPoint mouseGrabPos;
     QPoint mousePressPos;
@@ -185,6 +186,7 @@ PageView::PageView( QWidget *parent, KPDFDocument *document )
     d->document = document;
     d->zoomMode = (PageView::ZoomMode)KpdfSettings::zoomMode();
     d->zoomFactor = KpdfSettings::zoomFactor();
+    d->rotation = 0;
     d->mouseMode = MouseNormal;
     d->mouseMidStartY = -1;
     d->mouseOnRect = false;
@@ -263,6 +265,14 @@ void PageView::setupActions( KActionCollection * ac )
     d->aZoomFitText = new KToggleAction( i18n("Fit to &Text"), "viewmagfit", 0, ac, "zoom_fit_text" );
     connect( d->aZoomFitText, SIGNAL( toggled( bool ) ), SLOT( slotFitToTextToggled( bool ) ) );
 
+    // rotate actions
+    KAction *action;
+    action = new KAction( i18n("Rotate Right"), "rotate_cw", KShortcut( "Ctrl+Shift++" ),
+                          this, SLOT( slotRotateRight() ), ac, "rotate_right" );
+
+    action = new KAction( i18n("Rotate Left"), "rotate_ccw", KShortcut( "Ctrl+Shift+-" ),
+                          this, SLOT( slotRotateLeft() ), ac, "rotate_left" );
+
     // View-Layout actions
     d->aViewTwoPages = new KToggleAction( i18n("&Two Pages"), "view_left_right", 0, ac, "view_twopages" );
     connect( d->aViewTwoPages, SIGNAL( toggled( bool ) ), SLOT( slotTwoPagesToggled( bool ) ) );
@@ -1867,7 +1877,7 @@ void PageView::slotRequestVisiblePixmaps( int newLeft, int newTop )
         if ( !i->page()->hasPixmap( PAGEVIEW_ID, i->width(), i->height() ) )
         {
             PixmapRequest * p = new PixmapRequest(
-                    PAGEVIEW_ID, i->pageNumber(), i->width(), i->height(), PAGEVIEW_PRIO, true );
+                    PAGEVIEW_ID, i->pageNumber(), i->width(), i->height(), PAGEVIEW_PRIO, true, d->rotation );
             requestedPixmaps.push_back( p );
         }
 
@@ -1907,7 +1917,7 @@ void PageView::slotRequestVisiblePixmaps( int newLeft, int newTop )
             // request the pixmap if not already present
             if ( !i->page()->hasPixmap( PAGEVIEW_ID, i->width(), i->height() ) && i->width() > 0 )
                 requestedPixmaps.push_back( new PixmapRequest(
-                        PAGEVIEW_ID, i->pageNumber(), i->width(), i->height(), PAGEVIEW_PRELOAD_PRIO, true ) );
+                        PAGEVIEW_ID, i->pageNumber(), i->width(), i->height(), PAGEVIEW_PRELOAD_PRIO, true, d->rotation ) );
         }
 
         // add the page before the 'visible series' in preload
@@ -1918,7 +1928,7 @@ void PageView::slotRequestVisiblePixmaps( int newLeft, int newTop )
             // request the pixmap if not already present
             if ( !i->page()->hasPixmap( PAGEVIEW_ID, i->width(), i->height() ) && i->width() > 0 )
                 requestedPixmaps.push_back( new PixmapRequest(
-                        PAGEVIEW_ID, i->pageNumber(), i->width(), i->height(), PAGEVIEW_PRELOAD_PRIO, true ) );
+                        PAGEVIEW_ID, i->pageNumber(), i->width(), i->height(), PAGEVIEW_PRELOAD_PRIO, true, d->rotation ) );
         }
     }
 
@@ -2044,6 +2054,52 @@ void PageView::slotFitToTextToggled( bool on )
     if ( on ) updateZoom( ZoomFitText );
 }
 
+void PageView::slotRotateRight()
+{
+    d->rotation = ( d->rotation + 90 ) % 360;
+
+    QValueVector< PageViewItem * >::iterator iIt = d->items.begin(), iEnd = d->items.end();
+    for ( ; iIt != iEnd; ++iIt )
+    {
+        int r = const_cast<KPDFPage*>((*iIt)->page())->rotation();
+        r = ( r + 90 ) % 360;
+
+        const_cast<KPDFPage*>((*iIt)->page())->rotate90degrees();
+    }
+
+    // be sure to block updates to document's viewport
+    bool prevState = d->blockViewport;
+    d->blockViewport = true;
+    slotRelayoutPages();
+    d->blockViewport = prevState;
+    // request pixmaps
+    slotRequestVisiblePixmaps();
+}
+
+void PageView::slotRotateLeft()
+{
+    d->rotation -= 90;
+    if ( d->rotation < 0 ) d->rotation += 360;
+
+    QValueVector< PageViewItem * >::iterator iIt = d->items.begin(), iEnd = d->items.end();
+    for ( ; iIt != iEnd; ++iIt )
+    {
+        int r = const_cast<KPDFPage*>((*iIt)->page())->rotation();
+        r -= 90;
+        if ( r < 0 ) r += 360;
+
+        const_cast<KPDFPage*>((*iIt)->page())->rotate90degrees();
+    }
+
+    // be sure to block updates to document's viewport
+    bool prevState = d->blockViewport;
+    d->blockViewport = true;
+    slotRelayoutPages();
+    d->blockViewport = prevState;
+    // request pixmaps
+    slotRequestVisiblePixmaps();
+}
+
 void PageView::slotTwoPagesToggled( bool on )
 {
     uint newColumns = on ? 2 : 1;
diff --git a/kpdf/ui/pageview.h b/kpdf/ui/pageview.h
index f6e40991..be082bd4 100644
--- a/kpdf/ui/pageview.h
+++ b/kpdf/ui/pageview.h
@@ -135,6 +135,8 @@ class PageView : public QScrollView, public DocumentObserver
         void slotFitToWidthToggled( bool );
         void slotFitToPageToggled( bool );
         void slotFitToTextToggled( bool );
+        void slotRotateRight();
+        void slotRotateLeft();
         void slotTwoPagesToggled( bool );
         void slotContinuousToggled( bool );
         void slotSetMouseNormal();
diff --git a/kpdf/xpdf/xpdf/Stream.cc b/kpdf/xpdf/xpdf/Stream.cc
index ab630241..20219522 100644
--- a/kpdf/xpdf/xpdf/Stream.cc
+++ b/kpdf/xpdf/xpdf/Stream.cc
@@ -410,15 +410,12 @@ StreamPredictor::StreamPredictor(Stream *strA, int predictorA,
   ok = gFalse;
 
   nVals = width * nComps;
-  if (width <= 0 || nComps <= 0 || nBits <= 0 ||
-      nComps > gfxColorMaxComps || nBits > 16 ||
-      width >= INT_MAX / nComps ||
-      nVals >= (INT_MAX - 7) / nBits) {
-    return;
-  }
   pixBytes = (nComps * nBits + 7) >> 3;
   rowBytes = ((nVals * nBits + 7) >> 3) + pixBytes;
-  if (rowBytes <= 0) {
+  if (width <= 0 || nComps <= 0 || nBits <= 0 ||
+      nComps > gfxColorMaxComps || nBits > 16 ||
+      width >= INT_MAX / nComps ||      // check for overflow in nVals
+      nVals >= (INT_MAX - 7) / nBits) { // check for overflow in rowBytes
     return;
   }
   predLine = (Guchar *)gmalloc(rowBytes);