IGN:Working standalone Cover Flow

.bzrignore

@@ -1,7 +1,7 @@
 *_ui.py
 moc_*.cpp
 src/calibre/plugins
-src/calibre/gui2/pictureflow/.build/
+src/calibre/gui2/pictureflow/*.so*
 src/calibre/gui2/pictureflow/PyQt/.build/
 src/calibre/gui2/pictureflow/Makefile
 src/calibre.egg-info/

Makefile

@@ -25,7 +25,7 @@ manual:
 
 pictureflow :
 	mkdir -p src/calibre/plugins && rm -f src/calibre/plugins/*pictureflow* && \
-	cd src/calibre/gui2/pictureflow && rm *.o && \
+	cd src/calibre/gui2/pictureflow && rm -f *.o *.so* && \
 	mkdir -p .build && cd .build && rm -f * && \
 	qmake ../pictureflow-lib.pro && make && \
 	cd ../PyQt && \
@@ -33,7 +33,7 @@ pictureflow :
 	cd .build && rm -f * && \
 	python ../configure.py && make && \
 	cd ../../../../../.. && \
-	cp src/calibre/gui2/pictureflow/.build/libpictureflow.so.?.?.? src/calibre/gui2/pictureflow/PyQt/.build/pictureflow.so src/calibre/plugins/ && \
+	cp src/calibre/gui2/pictureflow/libpictureflow.so.?.?.? src/calibre/gui2/pictureflow/PyQt/.build/pictureflow.so src/calibre/plugins/ && \
 	python -c "import os, glob; lp = glob.glob('src/calibre/plugins/libpictureflow.so.*')[0]; os.rename(lp, lp[:-4])"
 
 

osx_installer.py

@@ -178,7 +178,7 @@ _check_symlinks_prescript()
             print 'Building pictureflow'
             os.chdir('src/calibre/gui2/pictureflow')
             for f in glob.glob('*.o'): os.unlink(f)
-            subprocess.check_call([qmake, 'pictureflow-lib.pro'])
+            subprocess.check_call([qmake, 'pictureflow.pro'])
             subprocess.check_call(['make'])
             files.append((os.path.abspath(os.path.realpath('libpictureflow.dylib')), 'libpictureflow.dylib'))
             os.chdir('PyQt/.build')

src/calibre/gui2/cover_flow.py

@@ -0,0 +1,131 @@
+#!/usr/bin/env  python
+__license__   = 'GPL v3'
+__copyright__ = '2008, Kovid Goyal kovid@kovidgoyal.net'
+__docformat__ = 'restructuredtext en'
+
+'''
+Module to implement the Cover Flow feature
+'''
+
+import sys, os
+from collections import deque
+
+from PyQt4.QtGui import QImage
+from PyQt4.QtCore import Qt, QSize, QTimer, SIGNAL
+
+from calibre import pictureflow
+
+if pictureflow is not None:
+    class FileSystemImages(pictureflow.FlowImages):
+        
+        def __init__(self, dirpath):
+            pictureflow.FlowImages.__init__(self)
+            self.images = []
+            self.captions = []
+            for f in os.listdir(dirpath):
+                f = os.path.join(dirpath, f)
+                img = QImage(f)
+                if not img.isNull():
+                    self.images.append(img)
+                    self.captions.append(os.path.basename(f))
+                
+        def count(self):
+            return len(self.images)
+        
+        def image(self, index):
+            return self.images[index]
+        
+        def caption(self, index):
+            return self.captions[index]
+        
+        def currentChanged(self, index):
+            print 'current changed:', index
+        
+    class DatabaseImages(pictureflow.FlowImages):
+        
+        def __init__(self, model, buffer=20):
+            pictureflow.FlowImages.__init__(self)
+            self.model = model
+            self.default_image = QImage(':/images/book.svg')
+            self.buffer_size = buffer
+            self.timer = QTimer()
+            self.connect(self.timer, SIGNAL('timeout()'), self.load)
+            self.timer.start(50)
+            self.clear()
+            
+        def count(self):
+            return self.model.rowCount(None)
+        
+        def caption(self, index):
+            return self.model.title(index)
+        
+        def clear(self):
+            self.buffer = {}
+            self.load_queue = deque()
+            
+        def load(self):
+            if self.load_queue:
+                index = self.load_queue.popleft()
+                if self.buffer.has_key(index):
+                    return
+                img = QImage()
+                img.loadFromData(self.model.cover(index))
+                if img.isNull():
+                    img = self.default_image
+                self.buffer[index] = img
+        
+        def image(self, index):
+            img = self.buffer.get(index)
+            if img is None:
+                img = QImage() 
+                img.loadFromData(self.model.cover(index))
+                if img.isNull():
+                    img = self.default_image
+            self.buffer[index] = img
+            return img
+        
+        def currentChanged(self, index):
+            for key in self.buffer.keys():
+                if abs(key - index) > self.buffer_size:
+                    self.buffer.pop(key)
+            for i in range(max(0, index-self.buffer_size), min(self.count(), index+self.buffer_size)):
+                if not self.buffer.has_key(i):
+                    self.load_queue.append(i)
+            
+    class CoverFlow(pictureflow.PictureFlow):
+        
+        def __init__(self, height=300, parent=None):
+            pictureflow.PictureFlow.__init__(self, parent)
+            self.setSlideSize(QSize(int(2/3. * height), height))
+            self.setMinimumSize(QSize(int(2.35*0.67*height), (5/3.)*height))
+else:
+    CoverFlow = None
+
+def main(args=sys.argv):
+    return 0
+
+if __name__ == '__main__':
+    from PyQt4.QtGui import QApplication, QMainWindow
+    app = QApplication([])
+    w = QMainWindow()
+    cf = CoverFlow()
+    cf.resize(cf.minimumSize())
+    w.resize(cf.minimumSize()+QSize(30, 20))
+    path = sys.argv[1]
+    if path.endswith('.db'):
+        from calibre.library.database import LibraryDatabase
+        from calibre.gui2.library import BooksModel
+        from calibre.gui2 import images_rc
+        bm = BooksModel()
+        bm.set_database(LibraryDatabase(path))
+        bm.sort(1, Qt.AscendingOrder)
+        model = DatabaseImages(bm)
+    else:
+        model = FileSystemImages(sys.argv[1])
+    cf.setImages(model)
+    cf.connect(cf, SIGNAL('currentChanged(int)'), model.currentChanged)
+    w.setCentralWidget(cf)
+    
+    w.show()
+    cf.setFocus(Qt.OtherFocusReason)
+    sys.exit(app.exec_())

src/calibre/gui2/library.py

@@ -92,7 +92,7 @@ class BooksModel(QAbstractTableModel):
                 num -= d
         return ''.join(result)
 
-    def __init__(self, parent):
+    def __init__(self, parent=None):
         QAbstractTableModel.__init__(self, parent)
         self.db = None
         self.cols = ['title', 'authors', 'size', 'date', 'rating', 'publisher', 'tags', 'series']
@@ -292,6 +292,12 @@ class BooksModel(QAbstractTableModel):
     def id(self, row):
         return self.db.id(row.row())
     
+    def title(self, row_number):
+        return self.db.title(row_number)
+    
+    def cover(self, row_number):
+        return self.db.cover(row_number)
+    
     def data(self, index, role):
         if role == Qt.DisplayRole or role == Qt.EditRole:      
             row, col = index.row(), index.column()

src/calibre/gui2/main.py

@@ -8,7 +8,8 @@ from PyQt4.QtGui import QPixmap, QColor, QPainter, QMenu, QIcon, QMessageBox, \
                         QToolButton, QDialog
 from PyQt4.QtSvg import QSvgRenderer
 
-from calibre import __version__, __appname__, islinux, sanitize_file_name, launch, Settings
+from calibre import __version__, __appname__, islinux, sanitize_file_name, launch, \
+                    Settings, pictureflowerror, iswindows, isosx
 from calibre.ptempfile import PersistentTemporaryFile
 from calibre.ebooks.metadata.meta import get_metadata, get_filename_pat, set_filename_pat
 from calibre.devices.errors import FreeSpaceError
@@ -18,7 +19,7 @@ from calibre.gui2 import APP_UID, warning_dialog, choose_files, error_dialog, \
                            pixmap_to_data, choose_dir, ORG_NAME, \
                            qstring_to_unicode, set_sidebar_directories, \
                            SingleApplication, Application
-from calibre import iswindows, isosx
+from calibre.gui2.cover_flow import CoverFlow
 from calibre.library.database import LibraryDatabase
 from calibre.gui2.update import CheckForUpdates
 from calibre.gui2.main_window import MainWindow

src/calibre/gui2/pictureflow/PyQt/configure.py

@@ -30,7 +30,7 @@ makefile = pyqtconfig.QtGuiModuleMakefile (
 # Add the library we are wrapping.  The name doesn't include any platform
 # specific prefixes or extensions (e.g. the "lib" prefix on UNIX, or the
 # ".dll" extension on Windows).
-makefile.extra_lib_dirs = ['../../.build', '..\\..\\release', '../../']
+makefile.extra_lib_dirs = ['../..', '..\\..\\release']
 makefile.extra_libs = ['pictureflow0' if 'win' in sys.platform and 'darwin' not in sys.platform else "pictureflow"]
 makefile.extra_cflags = ['-arch i386', '-arch ppc'] if 'darwin' in sys.platform else []
 makefile.extra_cxxflags = makefile.extra_cflags

src/calibre/gui2/pictureflow/PyQt/pictureflow.sip

@@ -6,48 +6,18 @@
 %Import QtCore/QtCoremod.sip
 %Import QtGui/QtGuimod.sip
 
-class AbstractDelayedImage {
+class FlowImages : QObject {
 
 %TypeHeaderCode
 #include "../../pictureflow.h"
 %End
 
 public:
-  AbstractDelayedImage();
-  virtual bool load();
-  virtual void unload();
-  virtual void free();
-  virtual bool isLoaded();
-  virtual QImage* image();
-
+  virtual int count();
+  virtual QImage image(int index);
+  virtual QString caption(int index);
 };
 
-class FileDelayedImage : AbstractDelayedImage
-{
-
-%TypeHeaderCode
-#include "../../pictureflow.h"
-%End
-
-public:
-  FileDelayedImage(QString path);
-  bool load();
-};
-
-class PreLoadedImage : AbstractDelayedImage
-{
-
-%TypeHeaderCode
-#include "../../pictureflow.h"
-%End
-
-public:
-
-  PreLoadedImage(const QImage& image); 
-  PreLoadedImage(const QPixmap& image);
-  bool load();
-  void free();
-};
 
 class PictureFlow : QWidget  {
 
@@ -58,102 +28,50 @@ class PictureFlow : QWidget  {
 
 public :
     
-  PictureFlow(QWidget *parent /TransferThis/ = 0, int loadBuffer = 10);
+  PictureFlow(QWidget *parent /TransferThis/ = 0);
 
-  /*!
-    Returns the background color.
-  */
-  QColor backgroundColor() const;
-
-  /*!
-    Sets the background color. By default it is black.
-  */
-  void setBackgroundColor(const QColor& c);
-
-  /*!
-    Returns the dimension of each slide (in pixels).
-  */
+  void setImages(FlowImages *images);
+  
   QSize slideSize() const;
 
-  /*!
-    Sets the dimension of each slide (in pixels).
-  */
   void setSlideSize(QSize size);
 
-  /*!
-    Returns the total number of slides.
-  */
-  int slideCount() const;
+  void setZoomFactor(int zoom);
 
-  /*!
-    Returns AbstractDelayedImage of specified slide.
-  */
-  AbstractDelayedImage slide(int index) const;
+  int zoomFactor() const;
 
-  /*!
-    Returns the index of slide currently shown in the middle of the viewport.
-  */
-  int centerIndex() const;
+  void clearCaches();
 
-  public slots:
+  virtual QImage slide(int index) const;
 
-  /*!
-    Adds a new slide.
-  */
-  void addSlide(AbstractDelayedImage *image);
+  int currentSlide() const;
 
-  /*!
-    Sets an image for specified slide. If the slide already exists,
-    it will be replaced.
-  */
-  void setSlide(int index, AbstractDelayedImage *image);
+public slots:
 
-  /*!
-    Sets slide to be shown in the middle of the viewport. No animation
-    effect will be produced, unlike using showSlide.
-  */
-  void setCenterIndex(int index);
+  void setCurrentSlide(int index);
 
-  /*!
-    Clears all slides.
-  */
-  void clear();
-
-  /*!
-    Shows previous slide using animation effect.
-  */
-  void showPrevious();
-
-  /*!
-    Shows next slide using animation effect.
-  */
-  void showNext();
-
-  /*!
-    Go to specified slide using animation effect.
-  */
-  void showSlide(int index);
-
-  /*!
-    Rerender the widget. Normally this function will be automatically invoked
-    whenever necessary, e.g. during the transition animation.
-  */
   void render();
 
-  /*!
-    Schedules a rendering update. Unlike render(), this function does not cause
-    immediate rendering.
-  */
-  void triggerRender();
+  void showPrevious();
+
+  void showNext();
+
+  void showSlide(int index);
+  
+  void dataChanged();
 
 signals:
-  void centerIndexChanged(int index);
+  void itemActivated(int index);
+  void inputReceived();
+  void currentChanged(int index);
 
 protected:
   void paintEvent(QPaintEvent *event);
   void keyPressEvent(QKeyEvent* event);
+  void mouseMoveEvent(QMouseEvent* event);
   void mousePressEvent(QMouseEvent* event);
+  void mouseReleaseEvent(QMouseEvent* event);
   void resizeEvent(QResizeEvent* event);
-
+  void timerEvent(QTimerEvent* event);
 };
 

src/calibre/gui2/pictureflow/main.cpp

@@ -1,185 +0,0 @@
-/*
-  PictureFlow - animated image show widget
-  http://pictureflow.googlecode.com
-
-  Copyright (C) 2008 Ariya Hidayat (ariya@kde.org)
-  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 <qapplication.h>
-#include <qdir.h>
-#include <qevent.h>
-#include <qfileinfo.h>
-#include <qimage.h>
-
-#if QT_VERSION >= 0x040000
-#include <QTime>
-#endif
-
-#include "pictureflow.h"
-
-QStringList findFiles(const QString& path = QString())
-{
-  QStringList files;
-
-  QDir dir = QDir::current();
-  if(!path.isEmpty())
-    dir = QDir(path);
-
-  dir.setFilter(QDir::Files | QDir::Hidden | QDir::NoSymLinks);
-#if QT_VERSION >= 0x040000
-  QFileInfoList list = dir.entryInfoList();
-  for (int i = 0; i < list.size(); ++i)
-  {
-    QFileInfo fileInfo = list.at(i);
-    files.append(dir.absoluteFilePath(fileInfo.fileName()));
-  }
-#else
-  const QFileInfoList* list = dir.entryInfoList();
-  if(list)
-  {
-    QFileInfoListIterator it( *list );
-    QFileInfo * fi;
-    while( (fi=it.current()) != 0 )
-    {
-      ++it;
-      files.append(dir.absFilePath(fi->fileName()));
-    }
-  }
-#endif
-
-  return files;
-}
-
-#if QT_VERSION < 0x040000
-#define modifiers state
-#define AltModifier AltButton
-#define setWindowTitle setCaption
-#endif
-
-#if QT_VERSION < 0x030000
-#define flush flushX
-#endif
-
-class Browser: public PictureFlow
-{
-public:
-  Browser(): PictureFlow()
-  {
-    setWindowTitle("PictureFlow");
-  }
-
-  void keyPressEvent(QKeyEvent* event)
-  {
-    if(event->key() == Qt::Key_Escape || event->key() == Qt::Key_Enter ||
-      event->key() == Qt::Key_Return)
-      {
-        event->accept();
-        close();
-      }
-
-    // checking the speed of rendering
-    if(event->key() == Qt::Key_F10)
-    if(event->modifiers() == Qt::AltModifier)
-    {
-      qDebug("benchmarking.... please wait");
-      const int blit_count = 10;
-
-      QTime stopwatch;
-      stopwatch.start();
-      for(int i = 0; i < blit_count; i++)
-      {
-        render(); repaint(); QApplication::flush(); QApplication::syncX();
-        render(); repaint(); QApplication::flush(); QApplication::syncX();
-        render(); repaint(); QApplication::flush(); QApplication::syncX();
-        render(); repaint(); QApplication::flush(); QApplication::syncX();
-        render(); repaint(); QApplication::flush(); QApplication::syncX();
-        render(); repaint(); QApplication::flush(); QApplication::syncX();
-        render(); repaint(); QApplication::flush(); QApplication::syncX();
-        render(); repaint(); QApplication::flush(); QApplication::syncX();
-        render(); repaint(); QApplication::flush(); QApplication::syncX();
-        render(); repaint(); QApplication::flush(); QApplication::syncX();
-      }
-      QString msg;
-      int elapsed = stopwatch.elapsed();
-      if( elapsed > 0 )
-        msg = QString("FPS: %1").arg( blit_count*10*1000.0/elapsed );
-      else
-        msg = QString("Too fast. Increase blit_count");
-      setWindowTitle( msg );
-      event->accept();
-      return;
-    }
-
-    // for debugging only: Alt+F11 cycles the reflection effect
-    if(event->key() == Qt::Key_F11)
-    if(event->modifiers() == Qt::AltModifier)
-    {
-      qDebug("changing reflection effect...");
-      switch(reflectionEffect())
-      {
-        //case NoReflection:      setReflectionEffect(PlainReflection); break;
-        case PlainReflection:   setReflectionEffect(BlurredReflection); break;
-        case BlurredReflection: setReflectionEffect(PlainReflection); break;
-        default:                setReflectionEffect(PlainReflection); break;
-      }
-      event->accept();
-      return;
-    }
-
-    PictureFlow::keyPressEvent(event);
-  }
-};
-
-int main( int argc, char ** argv )
-{
-  QApplication* app = new QApplication( argc, argv );
-  Browser* w = new Browser;
-
-#if defined(_WS_QWS) || defined(Q_WS_QWS)
-  w->showFullScreen();
-  int ww = w->width();
-  int wh = w->height();
-  int dim = (ww > wh) ? wh : ww;
-  dim = dim * 3 / 4;
-  w->setSlideSize(QSize(3*dim/5, dim));
-#else
-  w->setSlideSize(QSize(3*80, 5*80));
-  w->resize(750, 470);
-#endif
-
-  QStringList files = (argc > 1) ? findFiles(QString(argv[1])) : findFiles();
-
-  for(int i = 0; i < (int)files.count(); i++)
-    w->addSlide(new FileDelayedImage(files[i]));
-
-  w->setCenterIndex(w->slideCount()/2);
-  w->setBackgroundColor(Qt::white);
-  w->show();
-
-  app->connect( app, SIGNAL(lastWindowClosed()), app, SLOT(quit()) );
-  int result = app->exec();
-
-  delete w;
-  delete app;
-
-  return result;
-}

src/calibre/gui2/pictureflow/pictureflow-lib.pro

@@ -1,6 +0,0 @@
-TARGET = pictureflow
-TEMPLATE = lib
-HEADERS = pictureflow.h
-SOURCES = pictureflow.cpp 
-VERSION = 0.2.0
-CONFIG += x86 ppc

src/calibre/gui2/pictureflow/pictureflow.h

@@ -1,8 +1,39 @@
+/****************************************************************************
+**
+* (C) Copyright 2007 Trolltech ASA  
+*  All rights reserved.
+**
+* This is version of the Pictureflow animated image show widget modified by Trolltech ASA.
+*
+*
+* 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) 2008 Ariya Hidayat (ariya@kde.org)
   Copyright (C) 2007 Ariya Hidayat (ariya@kde.org)
 
   Permission is hereby granted, free of charge, to any person obtaining a copy
@@ -27,87 +58,47 @@
 #ifndef PICTUREFLOW_H
 #define PICTUREFLOW_H
 
-#include <QImage>
-#include <QPixmap>
 #include <QWidget>
 
-class AbstractDelayedImage
+class FlowImages : public QObject
 {
+Q_OBJECT
+
 public:
-  AbstractDelayedImage() : imageptr(0) {};
-  virtual ~AbstractDelayedImage() { free(); }
+	virtual int count();
+	virtual QImage image(int index);
+	virtual QString caption(int index);
 
-  virtual bool load();
-  virtual void unload();
-  virtual void free();
-  virtual bool isLoaded();
-  virtual QImage* image();
-
-protected:
-  QImage *imageptr;
+signals:
+	void dataChanged();
 
 };
 
-class FileDelayedImage : public AbstractDelayedImage
-{
-public:
-  FileDelayedImage(QString path) : file_path(path) { imageptr = 0; }
-
-  bool load();
-
-private:
-  QString file_path;
-};
-
-class PreLoadedImage : public AbstractDelayedImage
-{
-public:
-  PreLoadedImage(const QImage& image);  
-  PreLoadedImage(const QPixmap& image);
-
-  bool load();
-  void free();
-
-
-private:
-  QImage *memory;
-};
-
-
 class PictureFlowPrivate;
 
 /*!
-  Class PictureFlow implements an image show widget with animation effect
-  like Apple's CoverFlow (in iTunes and iPod). Images are arranged in form
-  of slides, one main slide is shown at the center with few slides on
-  the left and right sides of the center slide. When the next or previous
-  slide is brought to the front, the whole slides flow to the right or
-  the right with smooth animation effect; until the new slide is finally
+  Class PictureFlow implements an image show widget with animation effect 
+  like Apple's CoverFlow (in iTunes and iPod). Images are arranged in form 
+  of slides, one main slide is shown at the center with few slides on 
+  the left and right sides of the center slide. When the next or previous 
+  slide is brought to the front, the whole slides flow to the right or 
+  the right with smooth animation effect; until the new slide is finally 
   placed at the center.
 
- */
+ */ 
 class PictureFlow : public QWidget
 {
 Q_OBJECT
 
-  Q_PROPERTY(QColor backgroundColor READ backgroundColor WRITE setBackgroundColor)
+  Q_PROPERTY(int currentSlide READ currentSlide WRITE setCurrentSlide)
   Q_PROPERTY(QSize slideSize READ slideSize WRITE setSlideSize)
-  Q_PROPERTY(int slideCount READ slideCount)
-  Q_PROPERTY(int centerIndex READ centerIndex WRITE setCenterIndex)
+  Q_PROPERTY(int zoomFactor READ zoomFactor WRITE setZoomFactor)
 
 public:
-
-  enum ReflectionEffect
-  {
-    NoReflection,
-    PlainReflection,
-    BlurredReflection
-  };
-
   /*!
     Creates a new PictureFlow widget.
-  */
-  PictureFlow(QWidget* parent = 0, int loadBuffer = 10);
+  */  
+  PictureFlow(QWidget* parent = 0);
 
   /*!
     Destroys the widget.
@@ -115,74 +106,60 @@ public:
   ~PictureFlow();
 
   /*!
-    Returns the background color.
+    Set the images to be displayed by this widget.
   */
-  QColor backgroundColor() const;
-
-  /*!
-    Sets the background color. By default it is black.
-  */
-  void setBackgroundColor(const QColor& c);
-
+  void setImages(FlowImages *images);
+  
   /*!
     Returns the dimension of each slide (in pixels).
-  */
+  */  
   QSize slideSize() const;
 
   /*!
     Sets the dimension of each slide (in pixels).
-  */
+  */  
   void setSlideSize(QSize size);
 
   /*!
-    Returns the total number of slides.
-  */
-  int slideCount() const;
+    Sets the zoom factor (in percent).
+  */ 
+  void setZoomFactor(int zoom);
 
   /*!
-    Returns AbstractDelayedImage of specified slide.
+    Returns the zoom factor (in percent).
   */
-  AbstractDelayedImage slide(int index) const;
+  int zoomFactor() const;
+
+  /*!
+    Clears any caches held to free up memory
+  */
+  void clearCaches();
+
+  /*!
+    Returns QImage of specified slide.
+    This function will be called only whenever necessary, e.g. the 100th slide
+    will not be retrived when only the first few slides are visible.
+  */  
+  virtual QImage slide(int index) const;
 
   /*!
     Returns the index of slide currently shown in the middle of the viewport.
-  */
-  int centerIndex() const;
-
-  /*!
-    Returns the effect applied to the reflection.
-  */
-  ReflectionEffect reflectionEffect() const;
-
-  /*!
-    Sets the effect applied to the reflection. The default is PlainReflection.
-  */
-  void setReflectionEffect(ReflectionEffect effect);
-
+  */  
+  int currentSlide() const;
 
 public slots:
 
   /*!
-    Adds a new slide.
-  */
-  void addSlide(AbstractDelayedImage *image);
-
-  /*!
-    Sets an image for specified slide. If the slide already exists,
-    it will be replaced.
-  */
-  void setSlide(int index, AbstractDelayedImage *image);
-
-  /*!
-    Sets slide to be shown in the middle of the viewport. No animation
+    Sets slide to be shown in the middle of the viewport. No animation 
     effect will be produced, unlike using showSlide.
-  */
-  void setCenterIndex(int index);
+  */  
+  void setCurrentSlide(int index);
 
   /*!
-    Clears all slides.
+    Rerender the widget. Normally this function will be automatically invoked
+    whenever necessary, e.g. during the transition animation.
   */
-  void clear();
+  void render();
 
   /*!
     Shows previous slide using animation effect.
@@ -198,41 +175,30 @@ public slots:
     Go to specified slide using animation effect.
   */
   void showSlide(int index);
-
+  
   /*!
-    Rerender the widget. Normally this function will be automatically invoked
-    whenever necessary, e.g. during the transition animation.
+    Clear all caches and redraw
   */
-  void render();
-
-  /*!
-    Load and images that are in the load buffer. This function is automatically
-    caled peridically.
-  */
-  void load();
-
-  /*!
-    Schedules a rendering update. Unlike render(), this function does not cause
-    immediate rendering.
-  */
-  void triggerRender();
+  void dataChanged();
+  
+  void emitcurrentChanged(int index);
 
 signals:
-  void centerIndexChanged(int index);
+  void itemActivated(int index);
+  void inputReceived();
+  void currentChanged(int index);
 
 protected:
   void paintEvent(QPaintEvent *event);
   void keyPressEvent(QKeyEvent* event);
+  void mouseMoveEvent(QMouseEvent* event);
   void mousePressEvent(QMouseEvent* event);
+  void mouseReleaseEvent(QMouseEvent* event);
   void resizeEvent(QResizeEvent* event);
-
-private slots:
-  void updateAnimation();
+  void timerEvent(QTimerEvent* event);
 
 private:
   PictureFlowPrivate* d;
-  void updateBuffer(int old_center, int new_center);
 };
 
 #endif // PICTUREFLOW_H
-

src/calibre/gui2/pictureflow/pictureflow.pro

@@ -1,5 +1,6 @@
 TARGET = pictureflow
-TEMPLATE = app
+TEMPLATE = lib
 HEADERS = pictureflow.h
-SOURCES = pictureflow.cpp main.cpp
+SOURCES = pictureflow.cpp 
 VERSION = 0.2.0
+CONFIG += x86 ppc

windows_installer.py

@@ -545,7 +545,7 @@ class BuildEXE(build_exe):
                 shutil.rmtree('release')
             if os.path.exists('debug'):
                 shutil.rmtree('debug')
-            subprocess.check_call(['qmake', 'pictureflow-lib.pro'])
+            subprocess.check_call(['qmake', 'pictureflow.pro'])
             subprocess.check_call(['mingw32-make', '-f', 'Makefile.Release'])
             os.chdir('PyQt')
             if not os.path.exists('.build'):