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Diffstat (limited to 'kstars/kstars/conbridlg.cpp')
| -rw-r--r-- | kstars/kstars/conbridlg.cpp | 239 |
1 files changed, 239 insertions, 0 deletions
diff --git a/kstars/kstars/conbridlg.cpp b/kstars/kstars/conbridlg.cpp new file mode 100644 index 00000000..57bb84c7 --- /dev/null +++ b/kstars/kstars/conbridlg.cpp @@ -0,0 +1,239 @@ +/*************************************************************************** + conbridlg.h - Contrast/Brightness Dialog + ------------------- + begin : Fri Feb 6th 2004 + copyright : (C) 2004 by Jasem Mutlaq + email : mutlaqja@ikarustech.com + ***************************************************************************/ + +/*************************************************************************** + * * + * This program is free software; you can redistribute it and/or modify * + * it under the terms of the GNU General Public License as published by * + * the Free Software Foundation; either version 2 of the License, or * + * (at your option) any later version. * + * * + * * + ***************************************************************************/ + + #include <klocale.h> + #include <kimageeffect.h> + #include <kdebug.h> + + #include <qslider.h> + #include <qimage.h> + #include <qdatetime.h> + #include <knuminput.h> + + #include <stdlib.h> + + #include "contrastbrightnessgui.h" + #include "conbridlg.h" + #include "fitsviewer.h" + #include "fitsimage.h" + + #define REFRESH 500 + +//TODO find a better and faster way to implement this, this operation can be memory and CPU intensive. + +ContrastBrightnessDlg::ContrastBrightnessDlg(QWidget *parent) : + KDialogBase(KDialogBase::Plain, i18n( "Brightness/Contrast" ), Ok|Cancel, Ok, parent ) +{ + + float pixdiff, datadiff; + contrast = brightness = 0; + viewer = (FITSViewer *) parent; + displayImage = viewer->image->displayImage; + tempImage = new QImage(displayImage->copy()); + width = displayImage->width(); + height = displayImage->height(); + + datadiff = 255; + pixdiff = viewer->stats.max - viewer->stats.min; + offs = - (viewer->stats.min * datadiff / pixdiff); + scale = datadiff / pixdiff; + + ConBriDlg = new ConBriForm(this); + if (!ConBriDlg) return; + + localImgBuffer = (float *) malloc (width * height * sizeof(float)); + if (!localImgBuffer) + { + kdDebug() << "Not enough memory for local image buffer" << endl; + return; + } + + memcpy(localImgBuffer, viewer->imgBuffer, width * height * sizeof(float)); + + setMainWidget(ConBriDlg); + show(); + + connect(ConBriDlg->conSlider, SIGNAL( valueChanged(int)), this, SLOT (setContrast(int ))); + connect(ConBriDlg->briSlider, SIGNAL( valueChanged(int)), this, SLOT (setBrightness(int))); + +} + +ContrastBrightnessDlg::~ContrastBrightnessDlg() +{ + delete (tempImage); +} + +void ContrastBrightnessDlg::range(int min, int max, int & num) +{ + if (num < min) num = min; + else if (num > max) num = max; +} + +void ContrastBrightnessDlg::range(float min, float max, float & num) +{ + if (num < min) num = min; + else if (num > max) num = max; +} + + +#include <math.h> + +void ContrastBrightnessDlg::setContrast(int contrastValue) +{ + int val = 0, index=0, totalPix = width * height; + int min = (int) viewer->imgBuffer[0], max = 0; + if (!viewer) return; + QColor myCol; + contrast = contrastValue; + + + // Apply Contrast and brightness + for (int i=0 ; i < height ; i++) + for (int j=0; j < width; j++) + { + val = (int) *(viewer->image->templateImage->scanLine(i) + j); + + if (contrast) + { + if (val < 128) + { + val -= contrast; + range(0, 127, val); + } + else + { + val += contrast; + range(128, 255, val); + } + } + if (brightness) + { + myCol.setRgb(val,val,val); + if ( brightness < 0 ) + val += brightness; + else + { + myCol = myCol.light(100+(brightness)); + val = myCol.red(); + } + + range(0, 255, val); + } + + localImgBuffer[(height - i - 1) * width + j] = (val - offs) / scale; + } + + + + for (int i=0; i < totalPix; i++) + { + if (localImgBuffer[i] < min) min = (int) localImgBuffer[i]; + else if (localImgBuffer[i] > max) max = (int) localImgBuffer[i]; + } + + float pixdiff_b = max - min; + float offs_b = - (min * 255 / pixdiff_b); + float scale_b = 255 / pixdiff_b; + + for (int i=0; i < height; i++) + for (int j=0; j < width; j++) + { + index = i * width + j; + val = (int) (localImgBuffer[index] * scale_b + offs_b); + range(0, 255, val); + displayImage->setPixel(j, height - i - 1, val); + } + + viewer->image->zoomToCurrent(); +} + +void ContrastBrightnessDlg::setBrightness(int brightnessValue) +{ + int val = 0, index=0, totalPix = width * height; + int min = (int) viewer->imgBuffer[0], max = 0; + if (!viewer) return; + QColor myCol; + brightness = brightnessValue; + + // Apply Contrast and brightness + for (int i=0 ; i < height ; i++) + for (int j=0; j < width; j++) + { + val = (int) *(viewer->image->templateImage->scanLine(i) + j); + + if (contrast) + { + if (val < 128) + { + val -= contrast; + range(0, 127, val); + } + else + { + val += contrast; + range(128, 255, val); + } + } + if (brightness) + { + myCol.setRgb(val,val,val); + if ( brightness < 0 ) + val += brightness; + else + { + myCol = myCol.light(100+(brightness)); + val = myCol.red(); + } + + range(0, 255, val); + } + + localImgBuffer[(height - i - 1) * width + j] = (val - offs) / scale; + + + } + + for (int i=0; i < totalPix; i++) + { + if (localImgBuffer[i] < min) min = (int) localImgBuffer[i]; + else if (localImgBuffer[i] > max) max = (int) localImgBuffer[i]; + } + + float pixdiff_b = max - min; + float offs_b = - (min * 255 / pixdiff_b); + float scale_b = 255 / pixdiff_b; + + for (int i=0; i < height; i++) + for (int j=0; j < width; j++) + { + index = i * width + j; + val = (int) (localImgBuffer[index] * scale_b + offs_b); + range(0, 255, val); + displayImage->setPixel(j, height - i - 1, val); + } + + viewer->image->zoomToCurrent(); + +} + +QSize ContrastBrightnessDlg::sizeHint() const +{ + return QSize(400,130); +} + +#include "conbridlg.moc" |