| -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 @@ -32,6 +32,7 @@ OImageScrollView::OImageScrollView( QWidget* parent, const char* name, WFlags f m_states[IMAGE_IS_JPEG]=false; m_states[IMAGE_SCALED_LOADED]=false; m_states[SHOW_ZOOMER]=true; + _newImage = true; init(); } @@ -48,6 +49,7 @@ OImageScrollView::OImageScrollView (const QImage&img, QWidget * parent, const ch m_states[SHOW_ZOOMER]=true; _original_data.convertDepth(QPixmap::defaultDepth()); _original_data.setAlphaBuffer(false); + _newImage = true; init(); } @@ -62,6 +64,7 @@ OImageScrollView::OImageScrollView (const QString&img, QWidget * parent, const c m_states[IMAGE_IS_JPEG]=false; m_states[IMAGE_SCALED_LOADED]=false; m_states[SHOW_ZOOMER]=true; + _newImage = true; init(); setImage(img); } @@ -75,6 +78,7 @@ void OImageScrollView::setImage(const QImage&img) m_lastName = ""; setImageIsJpeg(false); setImageScaledLoaded(false); + _newImage = true; if (FirstResizeDone()) { generateImage(); } @@ -86,6 +90,7 @@ void OImageScrollView::loadJpeg(bool interncall) QImageIO iio( m_lastName, 0l ); QString param; bool real_load = false; + _newImage = true; if (AutoScale()) { if (!interncall) { ExifData xf; @@ -123,6 +128,7 @@ 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; @@ -174,6 +180,7 @@ void OImageScrollView::init() if (image_fit_into(_original_data.size()) || !ShowZoomer()) _zoomer->hide(); resizeContents(_original_data.width(),_original_data.height()); } + _intensity = 0; } void OImageScrollView::setAutoRotate(bool how) @@ -340,9 +347,102 @@ void OImageScrollView::rotate_into_data(Rotation r) } } + _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; @@ -367,6 +467,7 @@ void OImageScrollView::generateImage() } else { rotate_into_data(r); } + _newImage = true; } rescaleImage(width(),height()); } else if (!FirstResizeDone()||r!=m_last_rot||_image_data.width()==0) { @@ -377,6 +478,12 @@ void OImageScrollView::generateImage() } m_last_rot = r; } + + if (_newImage) { + apply_gamma(_intensity); + _newImage = false; + } + _pdata.convertFromImage(_image_data); twidth = _image_data.width(); theight = _image_data.height(); 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 @@ -121,6 +121,19 @@ public: */ 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. @@ -157,6 +170,8 @@ protected: QImage _image_data; QImage _original_data; QPixmap _pdata; + int _intensity; + bool _newImage; int _mouseStartPosX,_mouseStartPosY; @@ -179,6 +194,7 @@ protected: 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); |