Long live Qt for S60!

1 files changed, 1434 insertions, 0 deletions

diff --git a/demos/embedded/fluidlauncher/pictureflow.cpp b/demos/embedded/fluidlauncher/pictureflow.cpp
new file mode 100644
index 0000000..e2f8284
--- /dev/null
+++ b/demos/embedded/fluidlauncher/pictureflow.cpp
@@ -0,0 +1,1434 @@
+/****************************************************************************
+**
+* Copyright (C) 2009 Nokia Corporation and/or its subsidiary(-ies)
+* This is version of the Pictureflow animated image show widget modified by Nokia.
+*
+*  $QT_BEGIN_LICENSE:LGPL$
+*  No Commercial Usage
+*  This file contains pre-release code and may not be distributed.
+*  You may use this file in accordance with the terms and conditions
+*  contained in the either Technology Preview License Agreement or the
+*  Beta Release License Agreement.
+* 
+*  GNU Lesser General Public License Usage
+*  Alternatively, this file may be used under the terms of the GNU Lesser
+*  General Public License version 2.1 as published by the Free Software
+*  Foundation and appearing in the file LICENSE.LGPL included in the
+*  packaging of this file.  Please review the following information to
+*  ensure the GNU Lesser General Public License version 2.1 requirements
+*  will be met: http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html.
+* 
+*  In addition, as a special exception, Nokia gives you certain
+*  additional rights. These rights are described in the Nokia Qt LGPL
+*  Exception version 1.0, included in the file LGPL_EXCEPTION.txt in this
+*  package.
+* 
+*  GNU General Public License Usage
+*  Alternatively, this file may be used under the terms of the GNU
+*  General Public License version 3.0 as published by the Free Software
+*  Foundation and appearing in the file LICENSE.GPL included in the
+*  packaging of this file.  Please review the following information to
+*  ensure the GNU General Public License version 3.0 requirements will be
+*  met: http://www.gnu.org/copyleft/gpl.html.
+* 
+*  If you are unsure which license is appropriate for your use, please
+*  contact the sales department at qt-sales@nokia.com.
+*  $QT_END_LICENSE$
+*
+*
+* Redistribution and use in source and binary forms, with or without
+* modification, are permitted provided that the following conditions are met:
+*     * Redistributions of source code must retain the above copyright
+*       notice, this list of conditions and the following disclaimer.
+*     * Redistributions in binary form must reproduce the above copyright
+*       notice, this list of conditions and the following disclaimer in the
+*       documentation and/or other materials provided with the distribution.
+*     * Neither the name of the <organization> nor the
+*       names of its contributors may be used to endorse or promote products
+*       derived from this software without specific prior written permission.
+*
+* THIS SOFTWARE IS PROVIDED BY TROLLTECH ASA ``AS IS'' AND ANY
+* EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
+* WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
+* DISCLAIMED. IN NO EVENT SHALL <copyright holder> BE LIABLE FOR ANY
+* DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
+* (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
+* LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
+* ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
+* SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+
+****************************************************************************/
+
+/* 
+  ORIGINAL COPYRIGHT HEADER
+  PictureFlow - animated image show widget
+  http://pictureflow.googlecode.com
+
+  Copyright (C) 2007 Ariya Hidayat (ariya@kde.org)
+
+  Permission is hereby granted, free of charge, to any person obtaining a copy
+  of this software and associated documentation files (the "Software"), to deal
+  in the Software without restriction, including without limitation the rights
+  to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+  copies of the Software, and to permit persons to whom the Software is
+  furnished to do so, subject to the following conditions:
+
+  The above copyright notice and this permission notice shall be included in
+  all copies or substantial portions of the Software.
+
+  THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+  IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+  FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+  AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+  LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+  OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+  THE SOFTWARE.
+*/
+
+#include "pictureflow.h"
+
+#include <QBasicTimer>
+#include <QCache>
+#include <QImage>
+#include <QKeyEvent>
+#include <QPainter>
+#include <QPixmap>
+#include <QTimer>
+#include <QVector>
+#include <QWidget>
+#include <QTime>
+
+#ifdef Q_WS_QWS
+#include <QScreen>
+#endif
+
+#include <QDebug>
+
+static const int captionFontSize =
+#ifdef Q_WS_S60
+    8;
+#else
+    14;
+#endif
+
+
+// uncomment this to enable bilinear filtering for texture mapping
+// gives much better rendering, at the cost of memory space
+// #define PICTUREFLOW_BILINEAR_FILTER
+
+// for fixed-point arithmetic, we need minimum 32-bit long
+// long long (64-bit) might be useful for multiplication and division
+typedef long PFreal;
+
+typedef unsigned short QRgb565;
+
+#define RGB565_RED_MASK 0xF800
+#define RGB565_GREEN_MASK 0x07E0
+#define RGB565_BLUE_MASK 0x001F
+
+#define RGB565_RED(col) ((col&RGB565_RED_MASK)>>11)
+#define RGB565_GREEN(col) ((col&RGB565_GREEN_MASK)>>5)
+#define RGB565_BLUE(col) (col&RGB565_BLUE_MASK)
+
+#define PFREAL_SHIFT 10
+#define PFREAL_FACTOR (1 << PFREAL_SHIFT)
+#define PFREAL_ONE (1 << PFREAL_SHIFT)
+#define PFREAL_HALF (PFREAL_ONE >> 1)
+
+inline PFreal fmul(PFreal a, PFreal b)
+{
+  return ((long long)(a))*((long long)(b)) >> PFREAL_SHIFT;
+}
+
+inline PFreal fdiv(PFreal num, PFreal den)
+{
+  long long p = (long long)(num) << (PFREAL_SHIFT*2);
+  long long q = p / (long long)den;
+  long long r = q >> PFREAL_SHIFT;
+
+  return r;
+}
+
+inline float fixedToFloat(PFreal val)
+{
+  return ((float)val) / (float)PFREAL_ONE;
+}
+
+inline PFreal floatToFixed(float val)
+{
+  return (PFreal)(val*PFREAL_ONE);
+}
+
+#define IANGLE_MAX 1024
+#define IANGLE_MASK 1023
+
+// warning: regenerate the table if IANGLE_MAX and PFREAL_SHIFT are changed!
+static const PFreal sinTable[IANGLE_MAX] = {
+     3,      9,     15,     21,     28,     34,     40,     47, 
+    53,     59,     65,     72,     78,     84,     90,     97, 
+   103,    109,    115,    122,    128,    134,    140,    147, 
+   153,    159,    165,    171,    178,    184,    190,    196, 
+   202,    209,    215,    221,    227,    233,    239,    245, 
+   251,    257,    264,    270,    276,    282,    288,    294, 
+   300,    306,    312,    318,    324,    330,    336,    342, 
+   347,    353,    359,    365,    371,    377,    383,    388, 
+   394,    400,    406,    412,    417,    423,    429,    434, 
+   440,    446,    451,    457,    463,    468,    474,    479, 
+   485,    491,    496,    501,    507,    512,    518,    523, 
+   529,    534,    539,    545,    550,    555,    561,    566, 
+   571,    576,    581,    587,    592,    597,    602,    607, 
+   612,    617,    622,    627,    632,    637,    642,    647, 
+   652,    656,    661,    666,    671,    675,    680,    685, 
+   690,    694,    699,    703,    708,    712,    717,    721, 
+   726,    730,    735,    739,    743,    748,    752,    756, 
+   760,    765,    769,    773,    777,    781,    785,    789, 
+   793,    797,    801,    805,    809,    813,    816,    820, 
+   824,    828,    831,    835,    839,    842,    846,    849, 
+   853,    856,    860,    863,    866,    870,    873,    876, 
+   879,    883,    886,    889,    892,    895,    898,    901, 
+   904,    907,    910,    913,    916,    918,    921,    924, 
+   927,    929,    932,    934,    937,    939,    942,    944, 
+   947,    949,    951,    954,    956,    958,    960,    963, 
+   965,    967,    969,    971,    973,    975,    977,    978, 
+   980,    982,    984,    986,    987,    989,    990,    992, 
+   994,    995,    997,    998,    999,   1001,   1002,   1003, 
+  1004,   1006,   1007,   1008,   1009,   1010,   1011,   1012, 
+  1013,   1014,   1015,   1015,   1016,   1017,   1018,   1018, 
+  1019,   1019,   1020,   1020,   1021,   1021,   1022,   1022, 
+  1022,   1023,   1023,   1023,   1023,   1023,   1023,   1023, 
+  1023,   1023,   1023,   1023,   1023,   1023,   1023,   1022, 
+  1022,   1022,   1021,   1021,   1020,   1020,   1019,   1019, 
+  1018,   1018,   1017,   1016,   1015,   1015,   1014,   1013, 
+  1012,   1011,   1010,   1009,   1008,   1007,   1006,   1004, 
+  1003,   1002,   1001,    999,    998,    997,    995,    994, 
+   992,    990,    989,    987,    986,    984,    982,    980, 
+   978,    977,    975,    973,    971,    969,    967,    965, 
+   963,    960,    958,    956,    954,    951,    949,    947, 
+   944,    942,    939,    937,    934,    932,    929,    927, 
+   924,    921,    918,    916,    913,    910,    907,    904, 
+   901,    898,    895,    892,    889,    886,    883,    879, 
+   876,    873,    870,    866,    863,    860,    856,    853, 
+   849,    846,    842,    839,    835,    831,    828,    824, 
+   820,    816,    813,    809,    805,    801,    797,    793, 
+   789,    785,    781,    777,    773,    769,    765,    760, 
+   756,    752,    748,    743,    739,    735,    730,    726, 
+   721,    717,    712,    708,    703,    699,    694,    690, 
+   685,    680,    675,    671,    666,    661,    656,    652, 
+   647,    642,    637,    632,    627,    622,    617,    612, 
+   607,    602,    597,    592,    587,    581,    576,    571, 
+   566,    561,    555,    550,    545,    539,    534,    529, 
+   523,    518,    512,    507,    501,    496,    491,    485, 
+   479,    474,    468,    463,    457,    451,    446,    440, 
+   434,    429,    423,    417,    412,    406,    400,    394, 
+   388,    383,    377,    371,    365,    359,    353,    347, 
+   342,    336,    330,    324,    318,    312,    306,    300, 
+   294,    288,    282,    276,    270,    264,    257,    251, 
+   245,    239,    233,    227,    221,    215,    209,    202, 
+   196,    190,    184,    178,    171,    165,    159,    153, 
+   147,    140,    134,    128,    122,    115,    109,    103, 
+    97,     90,     84,     78,     72,     65,     59,     53, 
+    47,     40,     34,     28,     21,     15,      9,      3, 
+    -4,    -10,    -16,    -22,    -29,    -35,    -41,    -48, 
+   -54,    -60,    -66,    -73,    -79,    -85,    -91,    -98, 
+  -104,   -110,   -116,   -123,   -129,   -135,   -141,   -148, 
+  -154,   -160,   -166,   -172,   -179,   -185,   -191,   -197, 
+  -203,   -210,   -216,   -222,   -228,   -234,   -240,   -246, 
+  -252,   -258,   -265,   -271,   -277,   -283,   -289,   -295, 
+  -301,   -307,   -313,   -319,   -325,   -331,   -337,   -343, 
+  -348,   -354,   -360,   -366,   -372,   -378,   -384,   -389, 
+  -395,   -401,   -407,   -413,   -418,   -424,   -430,   -435, 
+  -441,   -447,   -452,   -458,   -464,   -469,   -475,   -480, 
+  -486,   -492,   -497,   -502,   -508,   -513,   -519,   -524, 
+  -530,   -535,   -540,   -546,   -551,   -556,   -562,   -567, 
+  -572,   -577,   -582,   -588,   -593,   -598,   -603,   -608, 
+  -613,   -618,   -623,   -628,   -633,   -638,   -643,   -648, 
+  -653,   -657,   -662,   -667,   -672,   -676,   -681,   -686, 
+  -691,   -695,   -700,   -704,   -709,   -713,   -718,   -722, 
+  -727,   -731,   -736,   -740,   -744,   -749,   -753,   -757, 
+  -761,   -766,   -770,   -774,   -778,   -782,   -786,   -790, 
+  -794,   -798,   -802,   -806,   -810,   -814,   -817,   -821, 
+  -825,   -829,   -832,   -836,   -840,   -843,   -847,   -850, 
+  -854,   -857,   -861,   -864,   -867,   -871,   -874,   -877, 
+  -880,   -884,   -887,   -890,   -893,   -896,   -899,   -902, 
+  -905,   -908,   -911,   -914,   -917,   -919,   -922,   -925, 
+  -928,   -930,   -933,   -935,   -938,   -940,   -943,   -945, 
+  -948,   -950,   -952,   -955,   -957,   -959,   -961,   -964, 
+  -966,   -968,   -970,   -972,   -974,   -976,   -978,   -979, 
+  -981,   -983,   -985,   -987,   -988,   -990,   -991,   -993, 
+  -995,   -996,   -998,   -999,  -1000,  -1002,  -1003,  -1004, 
+ -1005,  -1007,  -1008,  -1009,  -1010,  -1011,  -1012,  -1013, 
+ -1014,  -1015,  -1016,  -1016,  -1017,  -1018,  -1019,  -1019, 
+ -1020,  -1020,  -1021,  -1021,  -1022,  -1022,  -1023,  -1023, 
+ -1023,  -1024,  -1024,  -1024,  -1024,  -1024,  -1024,  -1024, 
+ -1024,  -1024,  -1024,  -1024,  -1024,  -1024,  -1024,  -1023, 
+ -1023,  -1023,  -1022,  -1022,  -1021,  -1021,  -1020,  -1020, 
+ -1019,  -1019,  -1018,  -1017,  -1016,  -1016,  -1015,  -1014, 
+ -1013,  -1012,  -1011,  -1010,  -1009,  -1008,  -1007,  -1005, 
+ -1004,  -1003,  -1002,  -1000,   -999,   -998,   -996,   -995, 
+  -993,   -991,   -990,   -988,   -987,   -985,   -983,   -981, 
+  -979,   -978,   -976,   -974,   -972,   -970,   -968,   -966, 
+  -964,   -961,   -959,   -957,   -955,   -952,   -950,   -948, 
+  -945,   -943,   -940,   -938,   -935,   -933,   -930,   -928, 
+  -925,   -922,   -919,   -917,   -914,   -911,   -908,   -905, 
+  -902,   -899,   -896,   -893,   -890,   -887,   -884,   -880, 
+  -877,   -874,   -871,   -867,   -864,   -861,   -857,   -854, 
+  -850,   -847,   -843,   -840,   -836,   -832,   -829,   -825, 
+  -821,   -817,   -814,   -810,   -806,   -802,   -798,   -794, 
+  -790,   -786,   -782,   -778,   -774,   -770,   -766,   -761, 
+  -757,   -753,   -749,   -744,   -740,   -736,   -731,   -727, 
+  -722,   -718,   -713,   -709,   -704,   -700,   -695,   -691, 
+  -686,   -681,   -676,   -672,   -667,   -662,   -657,   -653, 
+  -648,   -643,   -638,   -633,   -628,   -623,   -618,   -613, 
+  -608,   -603,   -598,   -593,   -588,   -582,   -577,   -572, 
+  -567,   -562,   -556,   -551,   -546,   -540,   -535,   -530, 
+  -524,   -519,   -513,   -508,   -502,   -497,   -492,   -486, 
+  -480,   -475,   -469,   -464,   -458,   -452,   -447,   -441, 
+  -435,   -430,   -424,   -418,   -413,   -407,   -401,   -395, 
+  -389,   -384,   -378,   -372,   -366,   -360,   -354,   -348, 
+  -343,   -337,   -331,   -325,   -319,   -313,   -307,   -301, 
+  -295,   -289,   -283,   -277,   -271,   -265,   -258,   -252, 
+  -246,   -240,   -234,   -228,   -222,   -216,   -210,   -203, 
+  -197,   -191,   -185,   -179,   -172,   -166,   -160,   -154, 
+  -148,   -141,   -135,   -129,   -123,   -116,   -110,   -104, 
+   -98,    -91,    -85,    -79,    -73,    -66,    -60,    -54, 
+   -48,    -41,    -35,    -29,    -22,    -16,    -10,     -4 
+};
+
+// this is the program the generate the above table
+#if 0
+#include <stdio.h>
+#include <math.h>
+
+#ifndef M_PI
+#define M_PI 3.14159265358979323846
+#endif
+
+#define PFREAL_ONE 1024
+#define IANGLE_MAX 1024
+
+int main(int, char**)
+{
+  FILE*f = fopen("table.c","wt");
+  fprintf(f,"PFreal sinTable[] = {\n");
+  for(int i = 0; i < 128; i++)
+  {
+    for(int j = 0; j < 8; j++)
+    {
+      int iang = j+i*8;
+      double ii = (double)iang + 0.5;
+      double angle = ii * 2 * M_PI / IANGLE_MAX;
+      double sinAngle = sin(angle);
+      fprintf(f,"%6d, ", (int)(floor(PFREAL_ONE*sinAngle)));
+    }
+    fprintf(f,"\n");
+  }
+  fprintf(f,"};\n");
+  fclose(f);
+
+  return 0;
+}
+#endif
+
+inline PFreal fsin(int iangle)
+{
+  while(iangle < 0)
+    iangle += IANGLE_MAX;
+  return sinTable[iangle & IANGLE_MASK];
+}  
+
+inline PFreal fcos(int iangle)
+{
+  // quarter phase shift
+  return fsin(iangle + (IANGLE_MAX >> 2));
+}
+
+struct SlideInfo
+{
+  int slideIndex;
+  int angle;
+  PFreal cx;
+  PFreal cy;
+};
+
+class PictureFlowPrivate
+{
+public:
+  PictureFlowPrivate(PictureFlow* widget);
+
+  int slideCount() const;
+  void setSlideCount(int count);
+
+  QSize slideSize() const;
+  void setSlideSize(QSize size);
+
+  int zoomFactor() const;
+  void setZoomFactor(int z);
+
+  QImage slide(int index) const;
+  void setSlide(int index, const QImage& image);
+
+  int currentSlide() const;
+  void setCurrentSlide(int index);
+
+  int getTarget() const;
+
+  void showPrevious();
+  void showNext();
+  void showSlide(int index);
+
+  void resize(int w, int h);
+
+  void render();
+  void startAnimation();
+  void updateAnimation();
+
+  void clearSurfaceCache();
+
+  QImage buffer;
+  QBasicTimer animateTimer;
+
+  bool   singlePress;
+  int    singlePressThreshold;
+  QPoint firstPress;
+  QPoint previousPos;
+  QTime  previousPosTimestamp;
+  int    pixelDistanceMoved;
+  int    pixelsToMovePerSlide;
+
+  QVector<QString> captions;
+
+private:
+  PictureFlow* widget;
+
+  int slideWidth;
+  int slideHeight;
+  int zoom;
+
+  QVector<QImage> slideImages;
+  int centerIndex;
+  SlideInfo centerSlide;
+  QVector<SlideInfo> leftSlides;
+  QVector<SlideInfo> rightSlides;
+
+  QVector<PFreal> rays;
+  int itilt;
+  int spacing;
+  PFreal offsetX;
+  PFreal offsetY;
+
+  QImage blankSurface;
+  QCache<int, QImage> surfaceCache;
+  QTimer triggerTimer;
+
+  int slideFrame;
+  int step;
+  int target;
+  int fade;
+
+  void recalc(int w, int h);
+  QRect renderSlide(const SlideInfo &slide, int alpha=256, int col1=-1, int col=-1);
+  QImage* surface(int slideIndex);
+  void triggerRender();
+  void resetSlides();
+};
+
+PictureFlowPrivate::PictureFlowPrivate(PictureFlow* w)
+{
+  widget = w;
+
+  slideWidth = 200;
+  slideHeight = 200;
+  zoom = 100;
+
+  centerIndex = 0;
+
+  slideFrame = 0;
+  step = 0;
+  target = 0;
+  fade = 256;
+
+  triggerTimer.setSingleShot(true);
+  triggerTimer.setInterval(0);
+  QObject::connect(&triggerTimer, SIGNAL(timeout()), widget, SLOT(render()));
+  
+  recalc(200, 200);
+  resetSlides();
+}
+
+int PictureFlowPrivate::slideCount() const
+{
+  return slideImages.count();
+}
+
+void PictureFlowPrivate::setSlideCount(int count)
+{
+  slideImages.resize(count);
+  captions.resize(count);
+  surfaceCache.clear();
+  resetSlides();
+  triggerRender();
+}
+
+QSize PictureFlowPrivate::slideSize() const
+{
+  return QSize(slideWidth, slideHeight);
+}
+
+void PictureFlowPrivate::setSlideSize(QSize size)
+{
+  slideWidth = size.width();
+  slideHeight = size.height();
+  recalc(buffer.width(), buffer.height());
+  triggerRender();
+}
+
+int PictureFlowPrivate::zoomFactor() const
+{
+  return zoom;
+}
+
+void PictureFlowPrivate::setZoomFactor(int z)
+{
+  if(z <= 0)
+    return;
+
+  zoom = z;
+  recalc(buffer.width(), buffer.height());
+  triggerRender();
+}
+
+QImage PictureFlowPrivate::slide(int index) const
+{
+  return slideImages[index];
+}
+
+void PictureFlowPrivate::setSlide(int index, const QImage& image)
+{
+  if((index >= 0) && (index < slideImages.count()))
+  {
+    slideImages[index] = image;
+    surfaceCache.remove(index);
+    triggerRender();
+  }  
+}
+
+int PictureFlowPrivate::getTarget() const
+{
+  return target;
+}
+
+int PictureFlowPrivate::currentSlide() const
+{
+  return centerIndex;
+} 
+
+void PictureFlowPrivate::setCurrentSlide(int index)
+{
+  step = 0;
+  centerIndex = qBound(index, 0, slideImages.count()-1);
+  target = centerIndex;
+  slideFrame = index << 16;
+  resetSlides();
+  triggerRender();
+}
+
+void PictureFlowPrivate::showPrevious()
+{
+  if(step >= 0)
+  {
+    if(centerIndex > 0)
+    {
+      target--;
+      startAnimation();
+    }
+  }
+  else
+  {
+    target = qMax(0, centerIndex - 2);
+  }
+}
+
+void PictureFlowPrivate::showNext()
+{
+  if(step <= 0)
+  {
+    if(centerIndex < slideImages.count()-1)
+    {
+      target++;
+      startAnimation();
+    }
+  }
+  else
+  {
+    target = qMin(centerIndex + 2, slideImages.count()-1);
+  }
+}
+
+void PictureFlowPrivate::showSlide(int index)
+{
+  index = qMax(index, 0);
+  index = qMin(slideImages.count()-1, index);
+  if(index == centerSlide.slideIndex)
+    return;
+
+  target = index;
+  startAnimation();
+}
+
+void PictureFlowPrivate::resize(int w, int h)
+{
+  recalc(w, h);
+  resetSlides();
+  triggerRender();
+}
+
+
+// adjust slides so that they are in "steady state" position
+void PictureFlowPrivate::resetSlides()
+{
+  centerSlide.angle = 0;
+  centerSlide.cx = 0;
+  centerSlide.cy = 0;
+  centerSlide.slideIndex = centerIndex;
+
+  leftSlides.clear();
+  leftSlides.resize(3);
+  for(int i = 0; i < leftSlides.count(); i++)
+  {
+    SlideInfo& si = leftSlides[i];
+    si.angle = itilt;
+    si.cx = -(offsetX + spacing*i*PFREAL_ONE);
+    si.cy = offsetY;
+    si.slideIndex = centerIndex-1-i;
+    //qDebug() << "Left[" << i << "] x=" << fixedToFloat(si.cx) << ", y=" << fixedToFloat(si.cy) ;
+  }
+
+  rightSlides.clear();
+  rightSlides.resize(3);
+  for(int i = 0; i < rightSlides.count(); i++)
+  {
+    SlideInfo& si = rightSlides[i];
+    si.angle = -itilt;
+    si.cx = offsetX + spacing*i*PFREAL_ONE;
+    si.cy = offsetY;
+    si.slideIndex = centerIndex+1+i;
+    //qDebug() << "Right[" << i << "] x=" << fixedToFloat(si.cx) << ", y=" << fixedToFloat(si.cy) ;
+  }
+}
+
+#define BILINEAR_STRETCH_HOR 4
+#define BILINEAR_STRETCH_VER 4
+
+static QImage prepareSurface(QImage img, int w, int h)
+{
+  Qt::TransformationMode mode = Qt::SmoothTransformation;
+  img = img.scaled(w, h, Qt::IgnoreAspectRatio, mode);
+
+  // slightly larger, to accomodate for the reflection
+  int hs = h * 2;
+  int hofs = h / 3;
+
+  // offscreen buffer: black is sweet
+  QImage result(hs, w, QImage::Format_RGB16);  
+  result.fill(0);
+
+  // transpose the image, this is to speed-up the rendering
+  // because we process one column at a time
+  // (and much better and faster to work row-wise, i.e in one scanline)
+  for(int x = 0; x < w; x++)
+    for(int y = 0; y < h; y++)
+      result.setPixel(hofs + y, x, img.pixel(x, y));
+
+  // create the reflection
+  int ht = hs - h - hofs;
+  int hte = ht;
+  for(int x = 0; x < w; x++)
+    for(int y = 0; y < ht; y++)
+    {
+      QRgb color = img.pixel(x, img.height()-y-1);
+      //QRgb565 color = img.scanLine(img.height()-y-1) + x*sizeof(QRgb565); //img.pixel(x, img.height()-y-1);
+      int a = qAlpha(color);
+      int r = qRed(color)   * a / 256 * (hte - y) / hte * 3/5;
+      int g = qGreen(color) * a / 256 * (hte - y) / hte * 3/5;
+      int b = qBlue(color)  * a / 256 * (hte - y) / hte * 3/5;
+      result.setPixel(h+hofs+y, x, qRgb(r, g, b));
+    }
+
+#ifdef PICTUREFLOW_BILINEAR_FILTER
+  int hh = BILINEAR_STRETCH_VER*hs;
+  int ww = BILINEAR_STRETCH_HOR*w;
+  result = result.scaled(hh, ww, Qt::IgnoreAspectRatio, Qt::SmoothTransformation);
+#endif
+
+  return result;
+}
+
+
+// get transformed image for specified slide
+// if it does not exist, create it and place it in the cache
+QImage* PictureFlowPrivate::surface(int slideIndex)
+{
+  if(slideIndex < 0)
+    return 0;
+  if(slideIndex >= slideImages.count())
+    return 0;
+
+  if(surfaceCache.contains(slideIndex))
+    return surfaceCache[slideIndex];
+
+  QImage img = widget->slide(slideIndex);
+  if(img.isNull())
+  {
+    if(blankSurface.isNull())
+    {
+      blankSurface = QImage(slideWidth, slideHeight, QImage::Format_RGB16);
+
+      QPainter painter(&blankSurface);
+      QPoint p1(slideWidth*4/10, 0);
+      QPoint p2(slideWidth*6/10, slideHeight);
+      QLinearGradient linearGrad(p1, p2);
+      linearGrad.setColorAt(0, Qt::black);
+      linearGrad.setColorAt(1, Qt::white); 
+      painter.setBrush(linearGrad);
+      painter.fillRect(0, 0, slideWidth, slideHeight, QBrush(linearGrad));
+
+      painter.setPen(QPen(QColor(64,64,64), 4));
+      painter.setBrush(QBrush());
+      painter.drawRect(2, 2, slideWidth-3, slideHeight-3);
+      painter.end();
+      blankSurface = prepareSurface(blankSurface, slideWidth, slideHeight);
+    }
+    return &blankSurface;
+  }
+
+  surfaceCache.insert(slideIndex, new QImage(prepareSurface(img, slideWidth, slideHeight)));
+  return surfaceCache[slideIndex];
+}
+
+
+// Schedules rendering the slides. Call this function to avoid immediate 
+// render and thus cause less flicker.
+void PictureFlowPrivate::triggerRender()
+{
+  triggerTimer.start();
+}
+
+// Render the slides. Updates only the offscreen buffer.
+void PictureFlowPrivate::render()
+{
+  buffer.fill(0);
+
+  int nleft = leftSlides.count();
+  int nright = rightSlides.count();
+
+  QRect r = renderSlide(centerSlide);
+  int c1 = r.left();
+  int c2 = r.right();
+
+  if(step == 0)
+  {
+    // no animation, boring plain rendering
+    for(int index = 0; index < nleft-1; index++)
+    {
+      int alpha = (index < nleft-2) ? 256 : 128;
+      QRect rs = renderSlide(leftSlides[index], alpha, 0, c1-1);
+      if(!rs.isEmpty())
+        c1 = rs.left();
+    }  
+    for(int index = 0; index < nright-1; index++)
+    {
+      int alpha = (index < nright-2) ? 256 : 128;
+      QRect rs = renderSlide(rightSlides[index], alpha, c2+1, buffer.width());
+      if(!rs.isEmpty())
+        c2 = rs.right();
+    }
+
+    QPainter painter;
+    painter.begin(&buffer);
+
+    QFont font("Arial", captionFontSize);
+    font.setBold(true);
+    painter.setFont(font);
+    painter.setPen(Qt::white);
+    //painter.setPen(QColor(255,255,255,127));
+
+    if (!captions.isEmpty())
+        painter.drawText( QRect(0,0, buffer.width(), (buffer.height() - slideSize().height())/4),
+        Qt::AlignCenter, captions[centerIndex]);
+
+    painter.end();
+
+  }
+  else
+  {
+    // the first and last slide must fade in/fade out
+    for(int index = 0; index < nleft; index++)
+    {
+      int alpha = 256;
+      if(index == nleft-1)
+        alpha = (step > 0) ? 0 : 128-fade/2;
+      if(index == nleft-2)
+        alpha = (step > 0) ? 128-fade/2 : 256-fade/2;
+      if(index == nleft-3)
+        alpha = (step > 0) ? 256-fade/2 : 256;
+      QRect rs = renderSlide(leftSlides[index], alpha, 0, c1-1);
+      if(!rs.isEmpty())
+        c1 = rs.left();
+
+      alpha = (step > 0) ? 256-fade/2 : 256;
+    }  
+    for(int index = 0; index < nright; index++)
+    {
+      int alpha = (index < nright-2) ? 256 : 128;
+      if(index == nright-1)
+        alpha = (step > 0) ? fade/2 : 0;
+      if(index == nright-2)
+        alpha = (step > 0) ? 128+fade/2 : fade/2;
+      if(index == nright-3)
+        alpha = (step > 0) ? 256 : 128+fade/2;
+      QRect rs = renderSlide(rightSlides[index], alpha, c2+1, buffer.width());
+      if(!rs.isEmpty())
+        c2 = rs.right();
+    }
+
+
+
+    QPainter painter;
+    painter.begin(&buffer);
+
+    QFont font("Arial", captionFontSize);
+    font.setBold(true);
+    painter.setFont(font);
+
+    int leftTextIndex = (step>0) ? centerIndex : centerIndex-1;
+
+    painter.setPen(QColor(255,255,255, (255-fade) ));
+    painter.drawText( QRect(0,0, buffer.width(), (buffer.height() - slideSize().height())/4),
+                      Qt::AlignCenter, captions[leftTextIndex]);
+
+    painter.setPen(QColor(255,255,255, fade));
+    painter.drawText( QRect(0,0, buffer.width(), (buffer.height() - slideSize().height())/4),
+                      Qt::AlignCenter, captions[leftTextIndex+1]);
+
+
+    painter.end();
+  }
+}
+
+
+static inline uint BYTE_MUL_RGB16(uint x, uint a) {
+    a += 1;
+    uint t = (((x & 0x07e0)*a) >> 8) & 0x07e0;
+    t |= (((x & 0xf81f)*(a>>2)) >> 6) & 0xf81f;
+    return t;
+}
+
+static inline uint BYTE_MUL_RGB16_32(uint x, uint a) {
+    uint t = (((x & 0xf81f07e0) >> 5)*a) & 0xf81f07e0;
+    t |= (((x & 0x07e0f81f)*a) >> 5) & 0x07e0f81f;
+    return t;
+}
+
+
+// Renders a slide to offscreen buffer. Returns a rect of the rendered area.
+// alpha=256 means normal, alpha=0 is fully black, alpha=128 half transparent
+// col1 and col2 limit the column for rendering.
+QRect PictureFlowPrivate::renderSlide(const SlideInfo &slide, int alpha, 
+int col1, int col2)
+{
+  QImage* src = surface(slide.slideIndex);
+  if(!src)
+    return QRect();
+
+  QRect rect(0, 0, 0, 0);  
+  
+#ifdef PICTUREFLOW_BILINEAR_FILTER
+  int sw = src->height() / BILINEAR_STRETCH_HOR;
+  int sh = src->width() / BILINEAR_STRETCH_VER;
+#else
+  int sw = src->height();
+  int sh = src->width();
+#endif
+  int h = buffer.height();
+  int w = buffer.width();
+
+  if(col1 > col2)
+  {
+    int c = col2;
+    col2 = col1;
+    col1 = c;
+  }
+
+  col1 = (col1 >= 0) ? col1 : 0;
+  col2 = (col2 >= 0) ? col2 : w-1;
+  col1 = qMin(col1, w-1);
+  col2 = qMin(col2, w-1);
+
+  int distance = h * 100 / zoom;
+  PFreal sdx = fcos(slide.angle);
+  PFreal sdy = fsin(slide.angle);
+  PFreal xs = slide.cx - slideWidth * sdx/2;
+  PFreal ys = slide.cy - slideWidth * sdy/2;
+  PFreal dist = distance * PFREAL_ONE;
+
+  int xi = qMax((PFreal)0, ((w*PFREAL_ONE/2) + fdiv(xs*h, dist+ys)) >> PFREAL_SHIFT);
+  if(xi >= w)
+    return rect;
+
+  bool flag = false;
+  rect.setLeft(xi);
+  for(int x = qMax(xi, col1); x <= col2; x++)
+  {
+    PFreal hity = 0;
+    PFreal fk = rays[x];
+    if(sdy)
+    {
+      fk = fk - fdiv(sdx,sdy);
+      hity = -fdiv((rays[x]*distance - slide.cx + slide.cy*sdx/sdy), fk);
+    }
+
+    dist = distance*PFREAL_ONE + hity;
+    if(dist < 0)
+      continue;
+
+    PFreal hitx = fmul(dist, rays[x]);
+    PFreal hitdist = fdiv(hitx - slide.cx, sdx);
+
+#ifdef PICTUREFLOW_BILINEAR_FILTER
+    int column = sw*BILINEAR_STRETCH_HOR/2 + (hitdist*BILINEAR_STRETCH_HOR >> PFREAL_SHIFT);
+    if(column >= sw*BILINEAR_STRETCH_HOR)
+      break;
+#else
+    int column = sw/2 + (hitdist >> PFREAL_SHIFT);
+    if(column >= sw)
+      break;
+#endif
+    if(column < 0)
+      continue;
+
+    rect.setRight(x);  
+    if(!flag)
+      rect.setLeft(x);
+    flag = true;  
+
+    int y1 = h/2;
+    int y2 = y1+ 1;
+    QRgb565* pixel1 = (QRgb565*)(buffer.scanLine(y1)) + x;
+    QRgb565* pixel2 = (QRgb565*)(buffer.scanLine(y2)) + x;
+    int pixelstep = pixel2 - pixel1;
+
+#ifdef PICTUREFLOW_BILINEAR_FILTER
+    int center = (sh*BILINEAR_STRETCH_VER/2);
+    int dy = dist*BILINEAR_STRETCH_VER / h;
+#else
+    int center = (sh/2);
+    int dy = dist / h;
+#endif
+    int p1 = center*PFREAL_ONE - dy/2;
+    int p2 = center*PFREAL_ONE + dy/2;
+
+    const QRgb565 *ptr = (const QRgb565*)(src->scanLine(column));
+    if(alpha == 256)
+      while((y1 >= 0) && (y2 < h) && (p1 >= 0))
+      {
+        *pixel1 = ptr[p1 >> PFREAL_SHIFT];
+        *pixel2 = ptr[p2 >> PFREAL_SHIFT];
+        p1 -= dy;
+        p2 += dy;
+        y1--;
+        y2++;
+        pixel1 -= pixelstep;
+        pixel2 += pixelstep;
+      }  
+    else
+      while((y1 >= 0) && (y2 < h) && (p1 >= 0))
+      {
+        QRgb565 c1 = ptr[p1 >> PFREAL_SHIFT];
+        QRgb565 c2 = ptr[p2 >> PFREAL_SHIFT];
+
+        *pixel1 = BYTE_MUL_RGB16(c1, alpha);
+        *pixel2 = BYTE_MUL_RGB16(c2, alpha);
+
+/*
+        int r1 = qRed(c1) * alpha/256;
+        int g1 = qGreen(c1) * alpha/256;
+        int b1 = qBlue(c1) * alpha/256;
+        int r2 = qRed(c2) * alpha/256;
+        int g2 = qGreen(c2) * alpha/256;
+        int b2 = qBlue(c2) * alpha/256;
+        *pixel1 = qRgb(r1, g1, b1);
+        *pixel2 = qRgb(r2, g2, b2);
+*/
+        p1 -= dy;
+        p2 += dy;
+        y1--;
+        y2++;
+        pixel1 -= pixelstep;
+        pixel2 += pixelstep;
+     }  
+   }  
+
+   rect.setTop(0);
+   rect.setBottom(h-1);
+   return rect;
+}
+
+// Updates look-up table and other stuff necessary for the rendering.
+// Call this when the viewport size or slide dimension is changed.
+void PictureFlowPrivate::recalc(int ww, int wh)
+{
+  int w = (ww+1)/2;
+  int h = (wh+1)/2;
+  buffer = QImage(ww, wh, QImage::Format_RGB16);
+  buffer.fill(0);
+
+  rays.resize(w*2);
+
+  for(int i = 0; i < w; i++)
+  {
+    PFreal gg = (PFREAL_HALF + i * PFREAL_ONE) / (2*h);
+    rays[w-i-1] = -gg;
+    rays[w+i] = gg;
+  }
+
+  // pointer must move more than 1/15 of the window to enter drag mode
+  singlePressThreshold = ww / 15;
+//  qDebug() << "singlePressThreshold now set to " << singlePressThreshold;
+
+  pixelsToMovePerSlide = ww / 3;
+//  qDebug() << "pixelsToMovePerSlide now set to " << pixelsToMovePerSlide;
+
+  itilt = 80 * IANGLE_MAX / 360;  // approx. 80 degrees tilted
+
+  offsetY = slideWidth/2 * fsin(itilt);
+  offsetY += slideWidth * PFREAL_ONE / 4;
+
+//  offsetX = slideWidth/2 * (PFREAL_ONE-fcos(itilt));
+//  offsetX += slideWidth * PFREAL_ONE;
+
+  //         center slide             +         side slide
+  offsetX = slideWidth*PFREAL_ONE;
+//  offsetX = 150*PFREAL_ONE;//(slideWidth/2)*PFREAL_ONE + ( slideWidth*fcos(itilt) )/2;
+//  qDebug() << "center width = " << slideWidth;
+//  qDebug() << "side width = " << fixedToFloat(slideWidth/2 * (PFREAL_ONE-fcos(itilt)));
+//  qDebug() << "offsetX now " << fixedToFloat(offsetX);
+
+  spacing = slideWidth/5;
+
+  surfaceCache.clear();
+  blankSurface = QImage();
+}
+
+void PictureFlowPrivate::startAnimation()
+{
+  if(!animateTimer.isActive())
+  {
+    step = (target < centerSlide.slideIndex) ? -1 : 1;
+    animateTimer.start(30, widget);
+  }
+}
+
+// Updates the animation effect. Call this periodically from a timer.
+void PictureFlowPrivate::updateAnimation()
+{
+  if(!animateTimer.isActive())
+    return;
+  if(step == 0)
+    return;
+
+  int speed = 16384;
+
+  // deaccelerate when approaching the target
+  if(true)
+  {
+    const int max = 2 * 65536;
+
+    int fi = slideFrame;
+    fi -= (target << 16);  
+    if(fi < 0)
+      fi = -fi;
+    fi = qMin(fi, max);
+
+    int ia = IANGLE_MAX * (fi-max/2) / (max*2);
+    speed = 512 + 16384 * (PFREAL_ONE+fsin(ia))/PFREAL_ONE;
+  }
+
+  slideFrame += speed*step;
+
+  int index = slideFrame >> 16;
+  int pos = slideFrame & 0xffff;
+  int neg = 65536 - pos;
+  int tick = (step < 0) ? neg : pos;
+  PFreal ftick = (tick * PFREAL_ONE) >> 16;  
+
+  // the leftmost and rightmost slide must fade away
+  fade = pos / 256;
+
+  if(step < 0)
+    index++;
+  if(centerIndex != index)
+  {
+    centerIndex = index;
+    slideFrame = index << 16;
+    centerSlide.slideIndex = centerIndex;
+    for(int i = 0; i < leftSlides.count(); i++)
+      leftSlides[i].slideIndex = centerIndex-1-i;
+    for(int i = 0; i < rightSlides.count(); i++)
+      rightSlides[i].slideIndex = centerIndex+1+i;
+  }
+
+  centerSlide.angle = (step * tick * itilt) >> 16;
+  centerSlide.cx = -step * fmul(offsetX, ftick);
+  centerSlide.cy = fmul(offsetY, ftick);
+
+  if(centerIndex == target)
+  {
+    resetSlides();
+    animateTimer.stop();
+    triggerRender();
+    step = 0;
+    fade = 256;
+    return;
+  }  
+
+  for(int i = 0; i < leftSlides.count(); i++)
+  {
+    SlideInfo& si = leftSlides[i];
+    si.angle = itilt;
+    si.cx = -(offsetX + spacing*i*PFREAL_ONE + step*spacing*ftick);
+    si.cy = offsetY;
+  }
+
+  for(int i = 0; i < rightSlides.count(); i++)
+  {
+    SlideInfo& si = rightSlides[i];
+    si.angle = -itilt;
+    si.cx = offsetX + spacing*i*PFREAL_ONE - step*spacing*ftick;
+    si.cy = offsetY;
+  }
+
+  if(step > 0)
+  {
+    PFreal ftick = (neg * PFREAL_ONE) >> 16;
+    rightSlides[0].angle = -(neg * itilt) >> 16;
+    rightSlides[0].cx = fmul(offsetX, ftick);
+    rightSlides[0].cy = fmul(offsetY, ftick);
+  }
+  else
+  {
+    PFreal ftick = (pos * PFREAL_ONE) >> 16;
+    leftSlides[0].angle = (pos * itilt) >> 16;
+    leftSlides[0].cx = -fmul(offsetX, ftick);
+    leftSlides[0].cy = fmul(offsetY, ftick);
+  } 
+
+  // must change direction ?
+  if(target < index) if(step > 0)
+    step = -1;
+  if(target > index) if(step < 0)
+    step = 1;
+
+  triggerRender();
+}
+
+
+void PictureFlowPrivate::clearSurfaceCache()
+{
+  surfaceCache.clear();
+}
+
+// -----------------------------------------
+
+PictureFlow::PictureFlow(QWidget* parent): QWidget(parent)
+{
+  d = new PictureFlowPrivate(this);
+
+  setAttribute(Qt::WA_StaticContents, true);
+  setAttribute(Qt::WA_OpaquePaintEvent, true);
+  setAttribute(Qt::WA_NoSystemBackground, true);
+
+#ifdef Q_WS_QWS
+  if (QScreen::instance()->pixelFormat() != QImage::Format_Invalid)
+    setAttribute(Qt::WA_PaintOnScreen, true);
+#endif
+}
+
+PictureFlow::~PictureFlow()
+{
+  delete d;
+}  
+
+int PictureFlow::slideCount() const
+{
+  return d->slideCount();
+}
+
+void PictureFlow::setSlideCount(int count)
+{
+  d->setSlideCount(count);
+}
+
+QSize PictureFlow::slideSize() const
+{
+  return d->slideSize();
+}
+
+void PictureFlow::setSlideSize(QSize size)
+{
+  d->setSlideSize(size);
+}
+
+int PictureFlow::zoomFactor() const
+{
+  return d->zoomFactor();
+}
+
+void PictureFlow::setZoomFactor(int z)
+{
+  d->setZoomFactor(z);
+}
+
+QImage PictureFlow::slide(int index) const
+{
+  return d->slide(index);
+}
+
+void PictureFlow::setSlide(int index, const QImage& image)
+{
+  d->setSlide(index, image);
+}
+
+void PictureFlow::setSlide(int index, const QPixmap& pixmap)
+{
+  d->setSlide(index, pixmap.toImage());
+}
+
+void PictureFlow::setSlideCaption(int index, QString caption)
+{
+  d->captions[index] = caption;
+}
+
+
+int PictureFlow::currentSlide() const
+{
+  return d->currentSlide();
+}
+
+void PictureFlow::setCurrentSlide(int index)
+{
+  d->setCurrentSlide(index);
+}
+
+void PictureFlow::clear()
+{
+  d->setSlideCount(0);
+}
+
+void PictureFlow::clearCaches()
+{
+  d->clearSurfaceCache();
+}
+
+void PictureFlow::render()
+{
+  d->render();
+  update();
+}
+
+void PictureFlow::showPrevious()
+{
+  d->showPrevious();
+}
+
+void PictureFlow::showNext()
+{
+  d->showNext();
+}
+
+void PictureFlow::showSlide(int index)
+{
+  d->showSlide(index);
+}
+
+void PictureFlow::keyPressEvent(QKeyEvent* event)
+{
+  if(event->key() == Qt::Key_Left)
+  {
+    if(event->modifiers() == Qt::ControlModifier)
+      showSlide(currentSlide()-10);
+    else  
+      showPrevious();
+    event->accept();
+    return;
+  }
+
+  if(event->key() == Qt::Key_Right)
+  {
+    if(event->modifiers() == Qt::ControlModifier)
+      showSlide(currentSlide()+10);
+    else
+      showNext();
+    event->accept();
+    return;
+  }
+
+  if (event->key() == Qt::Key_Enter || event->key() == Qt::Key_Select) {
+    emit itemActivated(d->getTarget());
+    event->accept();
+    return;
+  }
+
+  event->ignore();
+}
+
+#define SPEED_LOWER_THRESHOLD 10
+#define SPEED_UPPER_LIMIT 40
+
+void PictureFlow::mouseMoveEvent(QMouseEvent* event)
+{
+  int distanceMovedSinceLastEvent = event->pos().x() - d->previousPos.x();
+
+  // Check to see if we need to switch from single press mode to a drag mode
+  if (d->singlePress)
+  {
+    // Increment the distance moved for this event
+    d->pixelDistanceMoved += distanceMovedSinceLastEvent;
+
+    // Check against threshold
+    if (qAbs(d->pixelDistanceMoved) > d->singlePressThreshold)
+    {
+      d->singlePress = false;
+//      qDebug() << "DRAG MODE ON";
+    }
+  }
+
+  if (!d->singlePress)
+  {
+    int speed;
+    // Calculate velocity in a 10th of a window width per second
+    if (d->previousPosTimestamp.elapsed() == 0)
+      speed = SPEED_LOWER_THRESHOLD;
+    else
+    {
+      speed = ((qAbs(event->pos().x()-d->previousPos.x())*1000) / d->previousPosTimestamp.elapsed())
+                    / (d->buffer.width() / 10);
+  
+      if (speed < SPEED_LOWER_THRESHOLD)
+        speed = SPEED_LOWER_THRESHOLD;
+      else if (speed > SPEED_UPPER_LIMIT)
+        speed = SPEED_UPPER_LIMIT;
+      else {
+        speed = SPEED_LOWER_THRESHOLD + (speed / 3);
+//        qDebug() << "ACCELERATION ENABLED Speed = " << speed << ", Distance = " << distanceMovedSinceLastEvent;
+        
+      }
+    }
+  
+
+//    qDebug() << "Speed = " << speed;
+
+//    int incr = ((event->pos().x() - d->previousPos.x())/10) * speed;
+    
+//    qDebug() << "Incremented by " << incr;
+
+    int incr = (distanceMovedSinceLastEvent * speed);
+    
+    //qDebug() << "(distanceMovedSinceLastEvent * speed) = " << incr;
+
+    if (incr > d->pixelsToMovePerSlide*2) {
+      incr = d->pixelsToMovePerSlide*2;
+      //qDebug() << "Limiting incr to " << incr;
+    }
+
+
+    d->pixelDistanceMoved += (distanceMovedSinceLastEvent * speed);
+ //   qDebug() << "distance: " << d->pixelDistanceMoved;
+
+    int slideInc;
+
+    slideInc = d->pixelDistanceMoved / (d->pixelsToMovePerSlide * 10);
+
+    if (slideInc != 0) {
+      int targetSlide = d->getTarget() - slideInc;
+      showSlide(targetSlide);
+//      qDebug() << "TargetSlide = " << targetSlide;
+
+      //qDebug() << "Decrementing pixelDistanceMoved by " << (d->pixelsToMovePerSlide *10) * slideInc;
+
+      d->pixelDistanceMoved -= (d->pixelsToMovePerSlide *10) * slideInc;
+
+/*
+      if ( (targetSlide <= 0) || (targetSlide >= d->slideCount()-1) )
+        d->pixelDistanceMoved = 0;
+*/
+    }
+
+    
+  }
+
+  d->previousPos = event->pos();
+  d->previousPosTimestamp.restart();
+
+  emit inputReceived();
+}
+
+void PictureFlow::mousePressEvent(QMouseEvent* event)
+{
+  d->firstPress = event->pos();
+  d->previousPos = event->pos();
+  d->previousPosTimestamp.start();
+  d->singlePress = true; // Initially assume a single press
+//  d->dragStartSlide = d->getTarget();
+  d->pixelDistanceMoved = 0;
+
+  emit inputReceived();
+}
+
+void PictureFlow::mouseReleaseEvent(QMouseEvent* event)
+{
+  int sideWidth = (d->buffer.width() - slideSize().width()) /2;
+
+  if (d->singlePress)
+  {
+    if (event->x() < sideWidth )
+    {
+      showPrevious();
+    } else if ( event->x() > sideWidth + slideSize().width() ) {
+      showNext();
+    } else {
+      emit itemActivated(d->getTarget());
+    }
+
+    event->accept();
+  }
+
+  emit inputReceived();
+}
+
+
+void PictureFlow::paintEvent(QPaintEvent* event)
+{
+  Q_UNUSED(event);
+  QPainter painter(this);
+  painter.setRenderHint(QPainter::Antialiasing, false);
+  painter.drawImage(QPoint(0,0), d->buffer);
+}
+
+void PictureFlow::resizeEvent(QResizeEvent* event)
+{
+  d->resize(width(), height());
+  QWidget::resizeEvent(event);
+}
+
+void PictureFlow::timerEvent(QTimerEvent* event)
+{
+  if(event->timerId() == d->animateTimer.timerId())
+  {
+//    QTime now = QTime::currentTime();
+    d->updateAnimation();
+//    d->animateTimer.start(qMax(0, 30-now.elapsed() ), this);
+  }
+  else
+    QWidget::timerEvent(event);
+}