| -rw-r--r-- | libopie2/opiemm/oimagescrollview.cpp | 107 | ||||
| -rw-r--r-- | libopie2/opiemm/oimagescrollview.h | 16 |
2 files changed, 123 insertions, 0 deletions
diff --git a/libopie2/opiemm/oimagescrollview.cpp b/libopie2/opiemm/oimagescrollview.cpp index 37a1ad5..58a9748 100644 --- a/libopie2/opiemm/oimagescrollview.cpp +++ b/libopie2/opiemm/oimagescrollview.cpp @@ -1,240 +1,247 @@ #include "oimagescrollview.h" #include <opie2/oimagezoomer.h> #include <opie2/odebug.h> #include <opie2/oapplication.h> #include <opie2/owait.h> #include <opie2/opieexif.h> #include <qimage.h> #include <qlayout.h> /* for usage with the bitset */ #define AUTO_SCALE 0 #define AUTO_ROTATE 1 #define SHOW_ZOOMER 2 #define FIRST_RESIZE_DONE 3 #define IMAGE_IS_JPEG 4 #define IMAGE_SCALED_LOADED 5 #define SCROLLVIEW_BITSET_SIZE 6 namespace Opie { namespace MM { OImageScrollView::OImageScrollView( QWidget* parent, const char* name, WFlags f ) :QScrollView(parent,name,f|Qt::WRepaintNoErase ),_image_data(),_original_data(), m_states(SCROLLVIEW_BITSET_SIZE),m_lastName("") { _zoomer = 0; m_states[AUTO_SCALE]=true; m_states[AUTO_ROTATE]=true; m_states[FIRST_RESIZE_DONE]=false; m_states[IMAGE_IS_JPEG]=false; m_states[IMAGE_SCALED_LOADED]=false; m_states[SHOW_ZOOMER]=true; + _newImage = true; init(); } OImageScrollView::OImageScrollView (const QImage&img, QWidget * parent, const char * name, WFlags f,bool always_scale,bool rfit) :QScrollView(parent,name,f|Qt::WRepaintNoErase),_image_data(),_original_data(img), m_states(SCROLLVIEW_BITSET_SIZE),m_lastName("") { _zoomer = 0; m_states[AUTO_SCALE]=always_scale; m_states[AUTO_ROTATE]=rfit; m_states[FIRST_RESIZE_DONE]=false; m_states[IMAGE_IS_JPEG]=false; m_states[IMAGE_SCALED_LOADED]=false; m_states[SHOW_ZOOMER]=true; _original_data.convertDepth(QPixmap::defaultDepth()); _original_data.setAlphaBuffer(false); + _newImage = true; init(); } OImageScrollView::OImageScrollView (const QString&img, QWidget * parent, const char * name, WFlags f,bool always_scale,bool rfit) :QScrollView(parent,name,f|Qt::WRepaintNoErase),_image_data(),_original_data(),m_states(SCROLLVIEW_BITSET_SIZE),m_lastName("") { _zoomer = 0; m_states.resize(SCROLLVIEW_BITSET_SIZE); m_states[AUTO_SCALE]=always_scale; m_states[AUTO_ROTATE]=rfit; m_states[FIRST_RESIZE_DONE]=false; m_states[IMAGE_IS_JPEG]=false; m_states[IMAGE_SCALED_LOADED]=false; m_states[SHOW_ZOOMER]=true; + _newImage = true; init(); setImage(img); } void OImageScrollView::setImage(const QImage&img) { _image_data = QImage(); _original_data=img; _original_data.convertDepth(QPixmap::defaultDepth()); _original_data.setAlphaBuffer(false); m_lastName = ""; setImageIsJpeg(false); setImageScaledLoaded(false); + _newImage = true; if (FirstResizeDone()) { generateImage(); } } void OImageScrollView::loadJpeg(bool interncall) { if (m_lastName.isEmpty()) return; QImageIO iio( m_lastName, 0l ); QString param; bool real_load = false; + _newImage = true; if (AutoScale()) { if (!interncall) { ExifData xf; bool scanned = xf.scan(m_lastName); int wid, hei; wid = QApplication::desktop()->width(); hei = QApplication::desktop()->height(); if (hei>wid) { wid = hei; } else { hei = wid; } if ( (scanned && (wid<xf.getWidth()||hei<xf.getHeight()))||!scanned ) { param = QString( "Fast Shrink( 3 ) Scale( %1, %2, ScaleMin)" ).arg( wid ).arg( hei ); odebug << "Load jpeg scaled \"" << param << "\"" << oendl; iio.setParameters(param.latin1()); setImageScaledLoaded(true); } real_load = true; } } else { if (ImageScaledLoaded()||!interncall) { odebug << "Load jpeg unscaled" << oendl; real_load = true; } setImageScaledLoaded(false); } if (real_load) { _original_data = iio.read() ? iio.image() : QImage(); } } void OImageScrollView::setImage( const QString& path ) { odebug << "load new image " << oendl; if (m_lastName == path) return; m_lastName = path; + _newImage = true; _original_data = QImage(); QString itype = QImage::imageFormat(m_lastName); odebug << "Image type = " << itype << oendl; if (itype == "JPEG") { setImageIsJpeg(true); loadJpeg(); } else { setImageIsJpeg(false); _original_data.load(path); _original_data.convertDepth(QPixmap::defaultDepth()); _original_data.setAlphaBuffer(false); } _image_data = QImage(); if (FirstResizeDone()) { generateImage(); if (isVisible()) viewport()->repaint(true); } } /* should be called every time the QImage changed it content */ void OImageScrollView::init() { odebug << "init " << oendl; /* * create the zoomer * and connect ther various signals */ _zoomer = new Opie::MM::OImageZoomer( this, "The Zoomer" ); connect(_zoomer, SIGNAL( zoomAreaRel(int,int)), this, SLOT(scrollBy(int,int)) ); connect(_zoomer, SIGNAL( zoomArea(int,int)), this, SLOT(center(int,int)) ); connect(this,SIGNAL(contentsMoving(int,int)), _zoomer, (SLOT(setVisiblePoint(int,int))) ); connect(this,SIGNAL(imageSizeChanged(const QSize&)), _zoomer, SLOT(setImageSize(const QSize&)) ); connect(this,SIGNAL(viewportSizeChanged(const QSize&)), _zoomer, SLOT(setViewPortSize(const QSize&)) ); setBackgroundColor(white); setFocusPolicy(QWidget::StrongFocus); setImageScaledLoaded(false); setImageIsJpeg(false); if (FirstResizeDone()) { m_last_rot = Rotate0; generateImage(); } else if (_original_data.size().isValid()) { if (image_fit_into(_original_data.size()) || !ShowZoomer()) _zoomer->hide(); resizeContents(_original_data.width(),_original_data.height()); } + _intensity = 0; } void OImageScrollView::setAutoRotate(bool how) { /* to avoid double repaints */ if (AutoRotate() != how) { m_states.setBit(AUTO_ROTATE,how); _image_data = QImage(); generateImage(); } } bool OImageScrollView::AutoRotate()const { return m_states.testBit(AUTO_ROTATE); } void OImageScrollView::setAutoScaleRotate(bool scale, bool rotate) { m_states.setBit(AUTO_ROTATE,rotate); setAutoScale(scale); } void OImageScrollView::setAutoScale(bool how) { m_states.setBit(AUTO_SCALE,how); _image_data = QImage(); if (ImageIsJpeg() && how == false && ImageScaledLoaded()==true) { loadJpeg(true); } generateImage(); } bool OImageScrollView::AutoScale()const { return m_states.testBit(AUTO_SCALE); } OImageScrollView::~OImageScrollView() { } void OImageScrollView::rescaleImage(int w, int h) { if (_image_data.width()==w && _image_data.height()==h) { return; } double hs = (double)h / (double)_image_data.height() ; double ws = (double)w / (double)_image_data.width() ; double scaleFactor = (hs > ws) ? ws : hs; int smoothW = (int)(scaleFactor * _image_data.width()); int smoothH = (int)(scaleFactor * _image_data.height()); _image_data = _image_data.smoothScale(smoothW,smoothH); } void OImageScrollView::rotate_into_data(Rotation r) { /* realy - we must do this that way, 'cause when acting direct on _image_data the app will segfault :( */ QImage dest; int x, y; if ( _original_data.depth() > 8 ) { unsigned int *srcData, *destData; @@ -279,165 +286,265 @@ void OImageScrollView::rotate_into_data(Rotation r) break; } } else { unsigned char *srcData, *destData; unsigned int *srcTable, *destTable; switch ( r ) { case Rotate90: dest.create(_original_data.height(), _original_data.width(), _original_data.depth()); dest.setNumColors(_original_data.numColors()); srcTable = (unsigned int *)_original_data.colorTable(); destTable = (unsigned int *)dest.colorTable(); for ( x=0; x < _original_data.numColors(); ++x ) destTable[x] = srcTable[x]; for ( y=0; y < _original_data.height(); ++y ) { srcData = (unsigned char *)_original_data.scanLine(y); for ( x=0; x < _original_data.width(); ++x ) { destData = (unsigned char *)dest.scanLine(x); destData[_original_data.height()-y-1] = srcData[x]; } } break; case Rotate180: dest.create(_original_data.width(), _original_data.height(), _original_data.depth()); dest.setNumColors(_original_data.numColors()); srcTable = (unsigned int *)_original_data.colorTable(); destTable = (unsigned int *)dest.colorTable(); for ( x=0; x < _original_data.numColors(); ++x ) destTable[x] = srcTable[x]; for ( y=0; y < _original_data.height(); ++y ) { srcData = (unsigned char *)_original_data.scanLine(y); destData = (unsigned char *)dest.scanLine(_original_data.height()-y-1); for ( x=0; x < _original_data.width(); ++x ) destData[_original_data.width()-x-1] = srcData[x]; } break; case Rotate270: dest.create(_original_data.height(), _original_data.width(), _original_data.depth()); dest.setNumColors(_original_data.numColors()); srcTable = (unsigned int *)_original_data.colorTable(); destTable = (unsigned int *)dest.colorTable(); for ( x=0; x < _original_data.numColors(); ++x ) destTable[x] = srcTable[x]; for ( y=0; y < _original_data.height(); ++y ) { srcData = (unsigned char *)_original_data.scanLine(y); for ( x=0; x < _original_data.width(); ++x ) { destData = (unsigned char *)dest.scanLine(_original_data.width()-x-1); destData[y] = srcData[x]; } } break; default: dest = _original_data; break; } } + _newImage = true; _image_data = dest; } +void OImageScrollView::apply_gamma(int aValue) +{ + if (!_image_data.size().isValid()) return; + float percent = ((float)aValue/100); + odebug << "Apply gamma " << percent << oendl; + int pixels = _image_data.depth()>8?_image_data.width()*_image_data.height() : _image_data.numColors(); + int segColors = _image_data.depth() > 8 ? 256 : _image_data.numColors(); + unsigned char *segTbl = new unsigned char[segColors]; + bool brighten = (percent >= 0); + if ( percent < 0 ) + percent = -percent; + + unsigned int *data = _image_data.depth() > 8 ? (unsigned int *)_image_data.bits() : + (unsigned int *)_image_data.colorTable(); + + + if (brighten) { + for ( int i=0; i < segColors; ++i ) + { + int tmp = (int)(i*percent); + if ( tmp > 255 ) + tmp = 255; + segTbl[i] = tmp; + } + } else { + for ( int i=0; i < segColors; ++i ) + { + int tmp = (int)(i*percent); + if ( tmp < 0 ) + tmp = 0; + segTbl[i] = tmp; + } + } + if (brighten) { + for ( int i=0; i < pixels; ++i ) + { + int r = qRed(data[i]); + int g = qGreen(data[i]); + int b = qBlue(data[i]); + int a = qAlpha(data[i]); + r = r + segTbl[r] > 255 ? 255 : r + segTbl[r]; + g = g + segTbl[g] > 255 ? 255 : g + segTbl[g]; + b = b + segTbl[b] > 255 ? 255 : b + segTbl[b]; + data[i] = qRgba(r, g, b,a); + } + } else { + for ( int i=0; i < pixels; ++i ) + { + int r = qRed(data[i]); + int g = qGreen(data[i]); + int b = qBlue(data[i]); + int a = qAlpha(data[i]); + r = r - segTbl[r] < 0 ? 0 : r - segTbl[r]; + g = g - segTbl[g] < 0 ? 0 : g - segTbl[g]; + b = b - segTbl[b] < 0 ? 0 : b - segTbl[b]; + data[i] = qRgba(r, g, b, a); + } + } + delete [] segTbl; +} + +const int OImageScrollView::Intensity()const +{ + return _intensity; +} + +int OImageScrollView::setIntensity(int value,bool reload) +{ + int oldi = _intensity; + _intensity = value; + if (!_pdata.size().isValid()) { + return _intensity; + } + + if (!reload) { + _image_data = _pdata.convertToImage(); + apply_gamma(_intensity-oldi); + _pdata.convertFromImage(_image_data); + /* + * invalidate + */ + _image_data=QImage(); + if (isVisible()) { + updateContents(contentsX(),contentsY(),width(),height()); + } + } else { + _newImage = true; + generateImage(); + } + return _intensity; +} + void OImageScrollView::generateImage() { Rotation r = Rotate0; _pdata = QPixmap(); if (_original_data.isNull()) { emit imageSizeChanged( _image_data.size() ); if (_zoomer) _zoomer->setImage( _image_data ); return; } if (width()>height()&&_original_data.width()<_original_data.height() || width()<height()&&_original_data.width()>_original_data.height()) { if (AutoRotate()) r = Rotate90; } int twidth,theight; odebug << " r = " << r << oendl; if (AutoScale() && (_original_data.width()>width() || _original_data.height() > height()) ) { if (!_image_data.size().isValid()||width()>_image_data.width()||height()>_image_data.height()) { odebug << "Rescaling data" << oendl; if (r==Rotate0) { _image_data = _original_data; } else { rotate_into_data(r); } + _newImage = true; } rescaleImage(width(),height()); } else if (!FirstResizeDone()||r!=m_last_rot||_image_data.width()==0) { if (r==Rotate0) { _image_data = _original_data; } else { rotate_into_data(r); } m_last_rot = r; } + + if (_newImage) { + apply_gamma(_intensity); + _newImage = false; + } + _pdata.convertFromImage(_image_data); twidth = _image_data.width(); theight = _image_data.height(); /* * update the zoomer */ check_zoomer(); emit imageSizeChanged( _image_data.size() ); rescaleImage( 128, 128 ); resizeContents(twidth,theight); /* * move scrollbar */ if (_zoomer) { _zoomer->setGeometry( viewport()->width()-_image_data.width()/2, viewport()->height()-_image_data.height()/2, _image_data.width()/2, _image_data.height()/2 ); _zoomer->setImage( _image_data ); } /* * invalidate */ _image_data=QImage(); if (isVisible()) { updateContents(contentsX(),contentsY(),width(),height()); } } void OImageScrollView::resizeEvent(QResizeEvent * e) { odebug << "OImageScrollView resizeEvent (" << e->size() << " - " << e->oldSize() << oendl; QScrollView::resizeEvent(e); if (e->oldSize()==e->size()||!isUpdatesEnabled ()) return; generateImage(); setFirstResizeDone(true); emit viewportSizeChanged( viewport()->size() ); } void OImageScrollView::keyPressEvent(QKeyEvent * e) { if (!e) return; int dx = horizontalScrollBar()->lineStep(); int dy = verticalScrollBar()->lineStep(); if (e->key()==Qt::Key_Right) { scrollBy(dx,0); e->accept(); } else if (e->key()==Qt::Key_Left) { scrollBy(0-dx,0); e->accept(); } else if (e->key()==Qt::Key_Up) { scrollBy(0,0-dy); e->accept(); } else if (e->key()==Qt::Key_Down) { scrollBy(0,dy); e->accept(); } else { e->ignore(); } QScrollView::keyPressEvent(e); } void OImageScrollView::drawContents(QPainter * p, int clipx, int clipy, int clipw, int cliph) { diff --git a/libopie2/opiemm/oimagescrollview.h b/libopie2/opiemm/oimagescrollview.h index 01a2d56..11964fd 100644 --- a/libopie2/opiemm/oimagescrollview.h +++ b/libopie2/opiemm/oimagescrollview.h @@ -60,134 +60,150 @@ public: * @param fl widget flags. The flag Qt::WRepaintNoErase will be always set. * @param always_scale if the image should be scaled into the display * @param rfit the image will be rotated to fit */ OImageScrollView (const QString&aFile, QWidget * parent=0, const char * name=0, WFlags f=0,bool always_scale=false,bool rfit=false ); virtual ~OImageScrollView(); /** * sets the WDestructiveClose flag to the view */ virtual void setDestructiveClose(); /** * set if the image should be rotate to best fit * and repaint it if set to a new value. * * Be carefull - autorating real large images cost time! * @param how if true then autorotate otherwise not */ virtual void setAutoRotate(bool how); /** * set if the image should be scaled to the size of the viewport if larger(!) * * if autoscaling is set when loading a jpeg image, it will use a feature of * jpeg lib to load the image scaled to display size. If switch of later the * image will reloaded. * * @param how true - display image scaled down otherwise not */ virtual void setAutoScale(bool how); /** * set if the image should be scaled to the size of the viewport if larger(!) * and/or rotate to best fit. You avoid double repainting when you want to switch * booth values. * * if autoscaling is set when loading a jpeg image, it will use a feature of * jpeg lib to load the image scaled to display size. If switch of later the * image will reloaded. * * @param scale true - display image scaled down otherwise not * @param rotate true - the image will rotate for best fit */ virtual void setAutoScaleRotate(bool scale, bool rotate); /** * set if there should be displayed a small zoomer widget at the right bottom of * the view when the image is larger than the viewport. * * @param how true - display zoomer */ virtual void setShowZoomer(bool how); /** * return the current value of the autorotate flag. */ virtual bool AutoRotate()const; /** * return the current value of the autoscale flag. */ virtual bool AutoScale()const; /** * return the current value of the show zoomer flag. */ virtual bool ShowZoomer()const; + /** + * set a display intensity + * @param value the intensity value, will calcuated to a percent value (value/100) + * @param reload should the real image recalculated complete or just work on current display. + * @return the new intensity + */ + virtual int setIntensity(int value,bool reload=false); + /** + * return the current display intensity + */ + virtual const int Intensity()const; + + public slots: /** * Displays a new image, calculations will made immediately. * * @param aImage the image to display */ virtual void setImage(const QImage&aImage); /** * Displays a new image, calculations will made immediately. * * @param path the image to display */ virtual void setImage( const QString& path ); signals: /** * emitted when the display image size has changed. */ void imageSizeChanged( const QSize& ); /** * emitted when the size of the viewport has changed, eg. in resizeEvent of * the view. * * @see QWidget::resizeEvent */ void viewportSizeChanged( const QSize& ); protected: virtual void drawContents ( QPainter * p, int clipx, int clipy, int clipw, int cliph ); void init(); Opie::MM::OImageZoomer *_zoomer; QImage _image_data; QImage _original_data; QPixmap _pdata; + int _intensity; + bool _newImage; int _mouseStartPosX,_mouseStartPosY; QBitArray m_states; Rotation m_last_rot; QString m_lastName; virtual void rescaleImage(int w, int h); virtual void rotate_into_data(Rotation r); virtual void generateImage(); virtual void loadJpeg(bool interncall = false); bool image_fit_into(const QSize&s); void check_zoomer(); /* internal bitset manipulation */ virtual bool ImageIsJpeg()const; virtual void setImageIsJpeg(bool how); virtual bool ImageScaledLoaded()const; virtual void setImageScaledLoaded(bool how); virtual bool FirstResizeDone()const; virtual void setFirstResizeDone(bool how); + virtual void apply_gamma(int aValue); protected slots: virtual void viewportMouseMoveEvent(QMouseEvent* e); virtual void contentsMousePressEvent ( QMouseEvent * e); virtual void resizeEvent(QResizeEvent * e); virtual void keyPressEvent(QKeyEvent * e); }; } } #endif |