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Diffstat (limited to 'kstars/kstars/starpixmap.cpp')
| -rw-r--r-- | kstars/kstars/starpixmap.cpp | 138 |
1 files changed, 138 insertions, 0 deletions
diff --git a/kstars/kstars/starpixmap.cpp b/kstars/kstars/starpixmap.cpp new file mode 100644 index 00000000..1c1e9269 --- /dev/null +++ b/kstars/kstars/starpixmap.cpp @@ -0,0 +1,138 @@ +/*************************************************************************** + starpixmap.cpp - K Desktop Planetarium + ------------------- + begin : Wed Sep 19 2001 + copyright : (C) 2001 by Thomas Kabelmann + email : tk78@gmx.de + ***************************************************************************/ + +/*************************************************************************** + * * + * 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 "starpixmap.h" + +#include <kimageeffect.h> +#include <qbitmap.h> +#include <qimage.h> +#include <qpainter.h> + +#define STARSIZE 24 + +StarPixmap::StarPixmap (int starColorMode, int starColorIntensity) + : colorMode (starColorMode), colorIntensity (starColorIntensity) +{ + loadPixmaps (starColorMode, starColorIntensity); +} + +QPixmap* StarPixmap::getPixmap (QChar *color, int size) { + int c; +// the colors from blue to red +, O, B, A, F, G, K, M, N, P +// if *color is '+' use white star + switch (*color) { + case 'O' : c = 1; break; + case 'B' : c = 2; break; + case 'A' : c = 3; break; + case 'F' : c = 4; break; + case 'G' : c = 5; break; + case 'K' : c = 6; break; + case 'M' : c = 7; break; + case 'N' : c = 8; break; + case 'P' : c = 9; break; + default : c = 0; + } + // don't overflow the array + if (size > 25) size = 25; + return &starPixmaps[c][size]; +} + +void StarPixmap::setColorMode( int newMode ) { + colorMode = newMode; + loadPixmaps ( colorMode, colorIntensity ); +} + +void StarPixmap::setIntensity ( int newIntensity ) { + colorIntensity = newIntensity; + loadPixmaps ( colorMode, colorIntensity ); +} + +void StarPixmap::loadPixmaps (int newColorMode, int newColorIntensity) { + colorMode = newColorMode; + colorIntensity = newColorIntensity; + + if (colorIntensity < 0) colorIntensity = 0; // min + + QPixmap pix (STARSIZE, STARSIZE); + QBitmap mask (STARSIZE, STARSIZE); + QImage image; + QPainter p; + QMemArray<QColor> starColor; + starColor.resize( 8 ); + image.setAlphaBuffer(true); + + starColor[0] = QColor( 255, 255, 255 ); //default to white + starColor[1] = QColor( 0, 0, 255 ); //type O + starColor[2] = QColor( 0, 200, 255 ); //type B + starColor[3] = QColor( 0, 255, 255 ); //type A + starColor[4] = QColor( 200, 255, 100 ); //type F + starColor[5] = QColor( 255, 255, 0 ); //type G + starColor[6] = QColor( 255, 100, 0 ); //type K + starColor[7] = QColor( 255, 0, 0 ); //type M + +// background of the star + if ( colorMode==1 ) // night colors (fill red, no temperature colors) + pix.fill (Qt::red); + else if ( colorMode==2 ) //star chart colors (fill black, no temperature colors) + pix.fill (Qt::black); + else + pix.fill (Qt::white); // default (white) + + for (int color = 0; color < 10; color ++) { + int ic = color; + if ( color > 7 ) ic = 7; + + if (colorMode==0) { + p.begin (&pix); + p.setPen (QPen (starColor[ic], colorIntensity)); // the intensity of color determines the width of the pen + p.drawEllipse (0, 0, STARSIZE, STARSIZE); + p.end(); + } + + mask.fill (Qt::color0); + + p.begin (&mask); + p.setPen (QPen ( Qt::color1, 1)); + p.setBrush( QBrush( Qt::color1 ) ); + p.drawEllipse(0, 0, STARSIZE, STARSIZE); + p.end(); + + //BLUR!! ugliness-- requires temporary conversion to pixmap, then back again. + // if we defer the blur until the end, we lose the transparency. Bleh. + QImage tmp = pix.convertToImage(); + pix.convertFromImage( KImageEffect::blur( tmp, 100.0 ) ); + + pix.setMask (mask); // set the mask + image = pix.convertToImage(); // create the image for smoothScale() + + for (int i = 0; i < 26; i++) + { + tmp = image.smoothScale( STARSIZE*(i+1)/26, STARSIZE*(i+1)/26 ); +/* if (i < 6) + tmp = image.smoothScale (1+ i, 1+ i); // size: 1x1 .. 6x6 + else if (i < 12) + tmp = image.smoothScale (int((1+ i)*1.25), int((1+ i)*1.25)); // size: 8x8 ... 16x16 + else if (i < 18) + tmp = image.smoothScale (int((1+ i)*1.5), int((1+ i)*1.5)); // size: 19x19 .. 27x27 + else + tmp = image.smoothScale ((1+ i)*2, (1+ i)*2); // size: 38 .. 52x52 +*/ + starPixmaps[color][i].convertFromImage( tmp ); // fill the array of pixmaps + } + } +} |