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, 413 insertions, 0 deletions

diff --git a/kooka/kookaimage.cpp b/kooka/kookaimage.cpp
new file mode 100644
index 00000000..4db87728
--- /dev/null
+++ b/kooka/kookaimage.cpp
@@ -0,0 +1,413 @@
+/***************************************************************************
+                          kookaimage.cpp  - Kooka's Image
+                             -------------------
+    begin                : Thu Nov 20 2001
+    copyright            : (C) 1999 by Klaas Freitag
+    email                : [email protected]
+ ***************************************************************************/
+
+/***************************************************************************
+ *                                                                         *
+ *  This file may be distributed and/or modified under the terms of the    *
+ *  GNU General Public License version 2 as published by the Free Software *
+ *  Foundation and appearing in the file COPYING included in the           *
+ *  packaging of this file.                                                *
+ *
+ *  As a special exception, permission is given to link this program       *
+ *  with any version of the KADMOS ocr/icr engine of reRecognition GmbH,   *
+ *  Kreuzlingen and distribute the resulting executable without            *
+ *  including the source code for KADMOS in the source distribution.       *
+ *
+ *  As a special exception, permission is given to link this program       *
+ *  with any edition of Qt, and distribute the resulting executable,       *
+ *  without including the source code for Qt in the source distribution.   *
+ *                                                                         *
+ ***************************************************************************/
+
+#include <kdebug.h>
+#include <kurl.h>
+#include <kfileitem.h>
+
+#include "kookaimage.h"
+#include "config.h"
+#ifdef HAVE_LIBTIFF
+#include <tiffio.h>
+#include <tiff.h>
+#endif
+/**
+  *@author Klaas Freitag
+  */
+
+
+KookaImage::KookaImage( )
+   : QImage(),
+     m_subImages(-1),
+     m_subNo(0),
+     m_parent(0),
+     m_fileBound(false),
+     m_tileCols(0)
+{
+
+}
+
+/* constructor for subimages */
+KookaImage::KookaImage( int subNo, KookaImage *p )
+   : QImage(),
+     m_subImages(-1),
+     m_subNo(subNo),
+     m_parent( p ),
+     m_fileItem(0L),
+     m_fileBound(false),
+     m_tileCols(0)
+{
+   kdDebug(28000) << "Setting subimageNo to " << subNo << endl;
+}
+
+KookaImage& KookaImage::operator=(const KookaImage& img)
+{
+    QImage::operator=(img);
+
+    m_subImages = img.subImagesCount();
+    m_subNo     = img.m_subNo;
+    m_parent    = img.m_parent;
+    m_url       = img.m_url;
+    m_fileItem  = img.m_fileItem;
+    
+    return *this;
+}
+
+KookaImage& KookaImage::operator=(const QImage& img)
+{
+    QImage::operator=(img);
+    return *this;
+}
+
+KFileItem* KookaImage::fileItem() const
+{
+    return m_fileItem;
+}
+
+void KookaImage::setFileItem( KFileItem* it )
+{
+    m_fileItem = it;
+}
+
+const KFileMetaInfo KookaImage::fileMetaInfo( )
+{
+    QString filename = localFileName( );
+    if( ! filename.isEmpty() )
+    {
+        kdDebug(28000) << "Fetching metainfo for " << filename << endl;
+        const KFileMetaInfo info( filename );
+        return info;
+    }
+    else
+        return KFileMetaInfo();
+}
+
+QString KookaImage::localFileName( ) const
+{
+
+    if( ! m_url.isEmpty() )
+        return( m_url.directory() + "/" + m_url.fileName());
+    else
+        return QString();
+}
+
+bool KookaImage::loadFromUrl( const KURL& url )
+{
+   bool ret = true;
+   m_url = url;
+   QString filename = localFileName( );
+   QString format ( imageFormat( filename ));
+
+   /* if the format was not recogniseable, check the extension, if it is tif, try to read it by
+    * tifflib */
+   if( format.isNull() )
+   {
+      if( filename.endsWith( "tif" ) || filename.endsWith( "tiff" ) ||
+	  filename.endsWith( "TIF" ) || filename.endsWith( "TIFF" ) )
+      {
+	 format = "tif";
+	 kdDebug(28000) << "Setting format to tif by extension" << endl;
+      }
+   }
+
+   kdDebug(28000) << "Image format to load: <" << format << "> from file <" << filename << ">" << endl;
+   bool haveTiff = false;
+
+   if( !m_url.isLocalFile() )
+   {
+      kdDebug(28000)<<"ERROR: Can not laod non-local images -> not yet implemented!" << endl;
+      return false;
+   }
+
+#ifdef HAVE_LIBTIFF
+   TIFF* tif = 0;
+   m_subImages = 0;
+
+   if( format == "tif" ||
+       format == "TIF" ||
+       format == "TIFF" ||
+       format == "tiff" )
+   {
+      /* if it is tiff, check with Tifflib if it is multiple sided */
+      kdDebug(28000) << "Trying to load TIFF!" << endl;
+      tif = TIFFOpen(filename.latin1(), "r");
+      if (tif)
+      {
+	 do {
+	    m_subImages++;
+	 } while (TIFFReadDirectory(tif));
+	 kdDebug(28000) << m_subImages << " TIFF-directories found" << endl;
+
+	 haveTiff = true;
+      }
+   }
+#endif
+   if( !haveTiff )
+   {
+      /* Qt can only read one image */
+      ret = load(filename);
+      if( ret )
+      {
+	 m_subImages = 0;
+	 m_subNo = 0;
+      }
+   }
+#ifdef HAVE_LIBTIFF
+   else
+   {
+      loadTiffDir( filename, 0);
+      /* its a tiff, read by tifflib directly */
+      // Find the width and height of the image
+   }
+#endif
+
+   m_fileBound = ret;
+   return( ret );
+}
+
+
+KookaImage::KookaImage( const QImage& img )
+   : QImage( img )
+   /* m_subImages( 1 ) */
+{
+   m_subImages = 0;
+
+   /* Load one QImage, can not be Tiff yet. */
+   kdDebug(28000) << "constructor from other image here " << endl;
+}
+
+
+/* loads the number stored in m_subNo */
+void KookaImage::extractNow()
+{
+   kdDebug(28000) << "extracting a subimage number " << m_subNo << endl;
+
+   KookaImage *parent = parentImage();
+
+   if( parent )
+   {
+      loadTiffDir( parent->localFileName(), m_subNo );
+   }
+   else
+   {
+      kdDebug(28000) << "ERR: No parent defined - can not laod subimage" << endl;
+   }
+}
+
+KURL KookaImage::url() const
+{
+   return m_url;
+}
+
+bool KookaImage::loadTiffDir( const QString& filename, int no )
+{
+#ifdef HAVE_LIBTIFF
+   int imgWidth, imgHeight;
+   TIFF* tif = 0;
+   /* if it is tiff, check with Tifflib if it is multiple sided */
+   kdDebug(28000) << "Trying to load TIFF, subimage number "<< no  << endl;
+   tif = TIFFOpen(filename.latin1(), "r");
+   if (!tif)
+      return false;
+
+   if( ! TIFFSetDirectory( tif, no ) )
+   {
+      kdDebug(28000) << "ERR: could not set Directory " << no << endl;
+      TIFFClose(tif);
+      return false;
+   }
+   
+   TIFFGetField(tif, TIFFTAG_IMAGEWIDTH,  &imgWidth);
+   TIFFGetField(tif, TIFFTAG_IMAGELENGTH, &imgHeight);
+
+   
+   /* TODO: load bw-image correctly only 2 bit */
+   // KookaImage tmpImg;
+   create( imgWidth, imgHeight, 32 );
+   if (TIFFReadRGBAImage(tif, imgWidth, imgHeight, (uint32*) bits(),0))
+   {
+      // successfully read. now convert.
+      // reverse red and blue
+      uint32 *data;
+      data = (uint32 *)bits();
+      for( unsigned i = 0; i < unsigned(imgWidth * imgHeight); ++i )
+      {
+	 uint32 red = ( 0x00FF0000 & data[i] ) >> 16;
+	 uint32 blue = ( 0x000000FF & data[i] ) << 16;
+	 data[i] &= 0xFF00FF00;
+	 data[i] += red + blue;
+      }
+
+      // reverse image (it's upside down)
+      unsigned h = unsigned(imgHeight);
+      for( unsigned ctr = 0; ctr < h>>1; )
+      {
+	 unsigned *line1 = (unsigned *)scanLine( ctr );
+	 unsigned *line2 = (unsigned *)scanLine( imgHeight
+						       - ( ++ctr ) );
+
+	 unsigned w = unsigned(imgWidth);
+	 for( unsigned x = 0; x < w; x++ )
+	 {
+	    int temp = *line1;
+	    *line1 = *line2;
+	    *line2 = temp;
+	    line1++;
+	    line2++;
+	 }
+      }
+   }
+
+   /* fetch the x- and y-resolutions to adjust images */
+   float xReso, yReso;
+   bool resosFound;
+   resosFound  = TIFFGetField(tif, TIFFTAG_XRESOLUTION, &xReso );
+   resosFound &= TIFFGetField(tif, TIFFTAG_YRESOLUTION, &yReso );
+   kdDebug(28000)<< "Tiff image: X-Resol.: " << xReso << " and Y-Resol.: " << yReso << endl;
+
+   TIFFClose(tif);
+
+   /* Check now if resolution in x- and y-direction differ. If so, stretch the image
+    * accordingly.
+    */
+   if( resosFound && xReso != yReso )
+   {
+       if( xReso > yReso )
+       {
+	   float yScalefactor = xReso / yReso;
+	   kdDebug(28000) << "Different resolution x/y, rescaling with factor " << yScalefactor << endl;
+	   /* rescale the image */
+	   *this = smoothScale( imgWidth, int(imgHeight*yScalefactor), QImage::ScaleFree );
+       }
+       else
+       {
+	   /* yReso > xReso */
+	   float scalefactor = yReso / xReso;
+	   kdDebug(28000) << "Different resolution x/y, rescaling x with factor " << scalefactor << endl;
+	   /* rescale the image */
+	   *this = smoothScale( int(imgWidth*scalefactor), imgHeight, QImage::ScaleFree );
+	   
+       }
+   }
+   
+#endif
+   return true;
+}
+
+
+int KookaImage::subImagesCount() const
+{
+   return( m_subImages );
+}
+
+KookaImage::~KookaImage()
+{
+
+}
+
+KookaImage* KookaImage::parentImage() const
+{
+   return( m_parent );
+}
+
+bool KookaImage::isSubImage() const
+{
+   return( subImagesCount() );
+}
+
+/*
+ * tiling
+ */
+int KookaImage::cutToTiles( const QSize maxSize, int& rows, int& cols, TileMode  )
+{
+    QSize imgSize = size();
+
+    int w = imgSize.width();
+    if( w > maxSize.width() )
+    {
+        // image is wider than paper
+        w = maxSize.width();
+    }
+    int h = imgSize.height();
+    if( h > maxSize.height() )
+    {
+        // image is wider than paper
+        h = maxSize.height();
+    }
+
+    int absX = 0;  // absolute x position from where to start print
+    int absY = 0;  // on the image, left top corner of the part to print
+    rows = 0;
+
+    while( h )  // Loop over height, cut in vertical direction
+    {
+        rows++;
+        cols = 0;
+        while( w ) // Loop over width, cut in horizontal direction
+        {
+            cols++;
+            m_tileVector.append( QRect( absX, absY, w, h ));
+
+            absX += w+1;
+            w = imgSize.width() - absX;
+
+            // if w < 0, this was the last loop, set w to zero to stop loop
+            if( w < 0 ) w = 0;
+
+            // if > 0 here, a new page is required
+            if( w > 0 )
+            {
+                if( w > maxSize.width() ) w = maxSize.width();
+            }
+        }
+        // Reset the X-values to start on the left border again
+        absX = 0;
+        // start with full width again
+        w = imgSize.width();
+        if( w > maxSize.width() )
+            w = maxSize.width();
+
+        absY += h+1;
+        h = imgSize.height() - absY;
+
+        if( h < 0 ) h = 0;  // be sure to meet the break condition
+        if( h > maxSize.height()) h = maxSize.height();  // limit to page height
+    }
+    m_tileCols = cols;
+
+    return m_tileVector.count();
+}
+
+
+
+QRect KookaImage::getTileRect( int rowPos, int colPos ) const
+{
+    int indx = rowPos*m_tileCols+colPos;
+    kdDebug(28000) << "Tile Index: " << indx << endl;
+    const QRect r = m_tileVector[(rowPos)*m_tileCols + colPos];
+
+    return r;
+}