Rename 'digikam' folder to 'src'

Signed-off-by: Michele Calgaro <michele.calgaro@yahoo.it>

1 files changed, 263 insertions, 0 deletions

diff --git a/src/imageplugins/freerotation/freerotation.cpp b/src/imageplugins/freerotation/freerotation.cpp
new file mode 100644
index 00000000..3f8803d5
--- /dev/null
+++ b/src/imageplugins/freerotation/freerotation.cpp
@@ -0,0 +1,263 @@
+/* ============================================================
+ *
+ * This file is a part of digiKam project
+ * http://www.digikam.org
+ *
+ * Date        : 2005-07-18
+ * Description : Free rotation threaded image filter.
+ * 
+ * Copyright (C) 2004-2007 by Gilles Caulier <caulier dot gilles at gmail dot com>
+ * 
+ * This program is free software; you can redistribute it
+ * and/or modify it under the terms of the GNU General
+ * Public License as published by the Free Software Foundation;
+ * either version 2, or (at your option)
+ * any later version.
+ * 
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ * 
+ * ============================================================ */
+
+// Degrees to radian convertion coeff (PI/180). To optimize computation.
+#define DEG2RAD 0.017453292519943
+
+// C++ includes.
+
+#include <cmath>
+#include <cstdlib>
+
+// Local includes.
+
+#include "dimg.h"
+#include "dimgimagefilters.h"
+#include "freerotation.h"
+
+namespace DigikamFreeRotationImagesPlugin
+{
+
+FreeRotation::FreeRotation(Digikam::DImg *orgImage, TQObject *parent, double angle, bool antialiasing,
+                           int autoCrop, TQColor backgroundColor, int orgW, int orgH)
+            : Digikam::DImgThreadedFilter(orgImage, parent, "FreeRotation")
+{ 
+    m_angle           = angle;
+    m_orgW            = orgW;
+    m_orgH            = orgH;
+    m_antiAlias       = antialiasing;
+    m_autoCrop        = autoCrop;
+    m_backgroundColor = backgroundColor;
+        
+    initFilter();
+}
+
+void FreeRotation::filterImage(void)
+{
+    int          progress;
+    int w, h, nw, nh, j, i = 0;
+    int          nNewHeight, nNewWidth;
+    int          nhdx, nhdy, nhsx, nhsy;
+    double       lfSin, lfCos, lfx, lfy;
+    
+    int nWidth  = m_orgImage.width();
+    int nHeight = m_orgImage.height();
+    
+    uchar *pBits            = m_orgImage.bits();
+    unsigned short *pBits16 = (unsigned short*)m_orgImage.bits();
+    
+    // first of all, we need to calcule the sin and cos of the given angle
+    
+    lfSin = sin (m_angle * -DEG2RAD);
+    lfCos = cos (m_angle * -DEG2RAD);
+
+    // now, we have to calc the new size for the destination image
+    
+    if ((lfSin * lfCos) < 0)
+    {
+        nNewWidth  = ROUND (fabs (nWidth * lfCos - nHeight * lfSin));
+        nNewHeight = ROUND (fabs (nWidth * lfSin - nHeight * lfCos));
+    }
+    else
+    {
+        nNewWidth  = ROUND (fabs (nWidth * lfCos + nHeight * lfSin));
+        nNewHeight = ROUND (fabs (nWidth * lfSin + nHeight * lfCos));
+    }
+
+    // getting the destination's center position
+    
+    nhdx =  nNewWidth / 2;
+    nhdy = nNewHeight / 2;
+
+    // getting the source's center position
+    
+    nhsx =  nWidth / 2;
+    nhsy = nHeight / 2;
+
+    // now, we have to alloc a new image
+    
+    bool sixteenBit = m_orgImage.sixteenBit();
+    
+    m_destImage = Digikam::DImg(nNewWidth, nNewHeight, sixteenBit, m_orgImage.hasAlpha());
+    m_destImage.fill( Digikam::DColor(m_backgroundColor.rgb(), sixteenBit) );
+
+    uchar *pResBits            = m_destImage.bits();
+    unsigned short *pResBits16 = (unsigned short *)m_destImage.bits();
+
+    Digikam::DImgImageFilters filters;
+    
+    // main loop
+    
+    for (h = 0; !m_cancel && (h < nNewHeight); h++)
+    {
+        nh = h - nhdy;
+
+        for (w = 0; !m_cancel && (w < nNewWidth); w++)
+        {
+            nw = w - nhdx;
+
+            i = setPosition (nNewWidth, w, h);
+            
+            lfx = (double)nw * lfCos - (double)nh * lfSin + nhsx;
+            lfy = (double)nw * lfSin + (double)nh * lfCos + nhsy;
+
+            if (isInside (nWidth, nHeight, (int)lfx, (int)lfy))
+            {
+                if (m_antiAlias)
+                {
+                    if (!sixteenBit)
+                        filters.pixelAntiAliasing(pBits, nWidth, nHeight, lfx, lfy,
+                                                  &pResBits[i+3], &pResBits[i+2],
+                                                  &pResBits[i+1], &pResBits[i]);
+                    else
+                        filters.pixelAntiAliasing16(pBits16, nWidth, nHeight, lfx, lfy,
+                                                    &pResBits16[i+3], &pResBits16[i+2],
+                                                    &pResBits16[i+1], &pResBits16[i]);
+                }
+                else
+                {
+                    j = setPosition (nWidth, (int)lfx, (int)lfy);
+
+                    for (int p = 0 ; p < 4 ; p++)
+                    {
+                        if (!sixteenBit)
+                            pResBits[i] = pBits[j];
+                        else
+                            pResBits16[i] = pBits16[j];
+                        
+                        i++;
+                        j++;
+                    }
+                }
+            }
+        }
+
+        // Update the progress bar in dialog.
+        progress = (int)(((double)h * 100.0) / nNewHeight);
+        if (progress%5 == 0)
+            postProgress( progress );        
+    }
+
+    // Compute the rotated destination image size using original image dimensions.
+    int W, H;
+    double absAngle = fabs(m_angle);
+    
+    if (absAngle < 90.0)
+    {      
+        W = (int)(m_orgW * cos(absAngle * DEG2RAD) + m_orgH * sin(absAngle * DEG2RAD));
+        H = (int)(m_orgH * cos(absAngle * DEG2RAD) + m_orgW * sin(absAngle * DEG2RAD));
+    }
+    else 
+    {    
+        H = (int)(m_orgW * cos((absAngle-90.0) * DEG2RAD) + m_orgH * sin((absAngle-90.0) * DEG2RAD));
+        W = (int)(m_orgH * cos((absAngle-90.0) * DEG2RAD) + m_orgW * sin((absAngle-90.0) * DEG2RAD));
+    }
+    
+    // Auto-cropping destination image without black holes around.
+    TQRect autoCrop;
+       
+    switch(m_autoCrop)
+    {
+        case WidestArea:
+        {
+           // 'Widest Area' method (by Renchi Raju).
+           
+           autoCrop.setX( (int)(nHeight * sin(absAngle * DEG2RAD)) );
+           autoCrop.setY( (int)(nWidth  * sin(absAngle * DEG2RAD)) );
+           autoCrop.setWidth(  (int)(nNewWidth  - 2*nHeight * sin(absAngle * DEG2RAD)) );
+           autoCrop.setHeight( (int)(nNewHeight - 2*nWidth  * sin(absAngle * DEG2RAD)) );
+
+           if (!autoCrop.isValid())
+           {
+                m_destImage = Digikam::DImg(m_orgImage.width(), m_orgImage.height(), 
+                               m_orgImage.sixteenBit(), m_orgImage.hasAlpha());
+                m_destImage.fill( Digikam::DColor(m_backgroundColor.rgb(), sixteenBit) );
+                m_newSize = TQSize();
+           }
+           else
+           {
+                m_destImage = m_destImage.copy(autoCrop);
+                m_newSize.setWidth(  (int)(W - 2*m_orgH * sin(absAngle * DEG2RAD)) );
+                m_newSize.setHeight( (int)(H - 2*m_orgW * sin(absAngle * DEG2RAD)) );
+           }
+           break;
+        }
+       
+        case LargestArea:
+        {
+           // 'Largest Area' method (by Gerhard Kulzer).
+           
+           float gamma = atan((float)nHeight / (float)nWidth);
+           
+           if (absAngle < 90.0)
+           {
+                autoCrop.setWidth( (int)((float)nHeight / cos(absAngle*DEG2RAD) /
+                                   ( tan(gamma) + tan(absAngle*DEG2RAD) )) );
+                autoCrop.setHeight( (int)((float)autoCrop.width() * tan(gamma)) );
+           }
+           else
+           {
+                autoCrop.setHeight( (int)((float)nHeight / cos((absAngle-90.0)*DEG2RAD) /
+                                   ( tan(gamma) + tan((absAngle-90.0)*DEG2RAD) )) );
+                autoCrop.setWidth( (int)((float)autoCrop.height() * tan(gamma)) );
+           }
+           
+           autoCrop.moveCenter( TQPoint(nNewWidth/2, nNewHeight/2));
+           
+           if (!autoCrop.isValid())
+           {
+                m_destImage = Digikam::DImg(m_orgImage.width(), m_orgImage.height(), 
+                              m_orgImage.sixteenBit(), m_orgImage.hasAlpha());
+                m_destImage.fill( Digikam::DColor(m_backgroundColor.rgb(), sixteenBit) );
+                m_newSize = TQSize();
+           }
+           else
+           {           
+                m_destImage = m_destImage.copy(autoCrop);
+                gamma = atan((float)m_orgH / (float)m_orgW);
+               
+                if (absAngle < 90.0)
+                {
+                    m_newSize.setWidth( (int)((float)m_orgH / cos(absAngle*DEG2RAD) / 
+                                        ( tan(gamma) + tan(absAngle*DEG2RAD) )) );
+                    m_newSize.setHeight( (int)((float)m_newSize.width() * tan(gamma)) );                     
+                }
+                else
+                {
+                    m_newSize.setHeight( (int)((float)m_orgH / cos((absAngle-90.0)*DEG2RAD) /
+                                        ( tan(gamma) + tan((absAngle-90.0)*DEG2RAD) )) );
+                    m_newSize.setWidth( (int)((float)m_newSize.height() * tan(gamma)) );
+                }
+           }
+           break;
+        }
+        default:   // No auto croping.
+        {
+           m_newSize.setWidth( W );
+           m_newSize.setHeight( H );
+           break;
+        }
+    }
+}
+
+}  // NameSpace DigikamFreeRotationImagesPlugin