diff options
Diffstat (limited to 'kcoloredit/kxycolorselector.cpp')
| -rw-r--r-- | kcoloredit/kxycolorselector.cpp | 186 |
1 files changed, 186 insertions, 0 deletions
diff --git a/kcoloredit/kxycolorselector.cpp b/kcoloredit/kxycolorselector.cpp new file mode 100644 index 00000000..e12f7987 --- /dev/null +++ b/kcoloredit/kxycolorselector.cpp @@ -0,0 +1,186 @@ +/*************************************************************************** + kxycolorselector.cpp - description + ------------------- + begin : Fri Jul 7 2000 + copyright : (C) 2000 by Artur Rataj + email : art@zeus.polsl.gliwice.pl + ***************************************************************************/ + +/*************************************************************************** + * * + * 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 <qpainter.h> +#include <qpixmap.h> +#include <qimage.h> +#include <kimageeffect.h> +#include <kpalette.h> + +#include "kxycolorselector.h" + +KXYColorSelector::KXYColorSelector(QWidget *parent, const char *name) : KXYSelector(parent,name) { + setBackgroundMode(NoBackground); + setRange(0, 0, COMPONENT_SELECTION_RESOLUTION - 1, COMPONENT_SELECTION_RESOLUTION - 1); + setType(TYPE_NONE); + setGlobalComponent(0); + setMinimumSize(RGB_MAX_COMPONENT_VALUE/2 + 4, RGB_MAX_COMPONENT_VALUE/2 + 4); + setMaximumSize(512, 512); + updateContents(); +} +KXYColorSelector::~KXYColorSelector() { + +} + +void KXYColorSelector::setType(const int type) { + this->type = type; +} + +void KXYColorSelector::updateContents() { + drawPalette(&pixmap); + repaint(); +} + +void KXYColorSelector::resizeEvent(QResizeEvent*) { + setValues(xValue(), yValue()); + updateContents(); +} + +void KXYColorSelector::drawContents(QPainter* painter) { + painter->drawPixmap(contentsRect().x(), contentsRect().y(), pixmap); +} + +void KXYColorSelector::drawCursor(QPainter* painter, int x, int y) { + QColor color; + int colorX = x - contentsRect().x(); + int colorY = y - contentsRect().y(); + if(colorX < 0) + colorX = 0; + if(colorY < 0) + colorY = 0; + if(colorX > contentsRect().width() - 1) + colorX = contentsRect().width() - 1; + if(colorY > contentsRect().height() - 1) + colorY = contentsRect().height() - 1; + setColor(&color, colorX, colorY); + QColor cursorColor; + if(( 2*color.red() + 4*color.green() + 1*color.blue() )*1.0/ + ( 2*255 + 4*255 + 1*255 ) > 0.65) + cursorColor = Qt::black; + else + cursorColor = Qt::white; + painter->setPen(QPen( cursorColor )); + const int lineBegin = 2; + const int lineEnd = 6; + painter->drawLine(x + lineBegin, y - lineBegin, x + lineEnd, y - lineEnd); + painter->drawLine(x + lineBegin, y + lineBegin, x + lineEnd, y + lineEnd); + painter->drawLine(x - lineBegin, y + lineBegin, x - lineEnd, y + lineEnd); + painter->drawLine(x - lineBegin, y - lineBegin, x - lineEnd, y - lineEnd); +} + +void KXYColorSelector::setGlobalComponent(const int component) { + m_globalComponent = component; +} + +int KXYColorSelector::globalComponent() const{ + return m_globalComponent; +} + +void KXYColorSelector::setColor(QColor* const color, const int x, const int y) { + int xSize = contentsRect().width(); + int ySize = contentsRect().height(); + switch(type) { + case TYPE_HS: + color->setHsv(360*x/xSize, 256*( ySize - 1 - y )/ySize, + globalComponent()); + break; + + case TYPE_VS: + color->setHsv(globalComponent(), 256*( ySize - 1 - y )/ySize, + 256*x/xSize); + break; + + case TYPE_HV: + color->setHsv(360*x/xSize, globalComponent(), + 256*( ySize - 1 - y )/ySize); + break; + + case TYPE_RG: + color->setRgb(x/xSize, 256*( ySize - 1 - y )/ySize, + globalComponent()); + break; + + case TYPE_GB: + color->setRgb(globalComponent(), 256*x/xSize, + 256*( ySize - 1 - y )/ySize); + break; + + case TYPE_BR: + color->setRgb(256*( ySize - 1 - y )/ySize, globalComponent(), + 256*x/xSize); + break; + + case TYPE_NONE: + color->setRgb(192, 192, 192); + break; + + } +} + +QColor* KXYColorSelector::standardColorsPalette() { + QColor* palette = new QColor[STANDARD_PALETTE_SIZE]; + int i = 0; + palette[i++] = Qt::red; + palette[i++] = Qt::green; + palette[i++] = Qt::blue; + palette[i++] = Qt::cyan; + palette[i++] = Qt::magenta; + palette[i++] = Qt::yellow; + palette[i++] = Qt::darkRed; + palette[i++] = Qt::darkGreen; + palette[i++] = Qt::darkBlue; + palette[i++] = Qt::darkCyan; + palette[i++] = Qt::darkMagenta; + palette[i++] = Qt::darkYellow; + palette[i++] = Qt::white; + palette[i++] = Qt::lightGray; + palette[i++] = Qt::gray; + palette[i++] = Qt::darkGray; + palette[i++] = Qt::black; + return palette; +} + +void KXYColorSelector::drawPalette(QPixmap* pixmap) { + int xSize = contentsRect().width(); + int ySize = contentsRect().height(); + QImage image(xSize, ySize, 32); + QColor color; + int x; + int y; + + if(type != TYPE_NONE) { + for (y = 0; y < ySize; ++y) + { + unsigned int* p = (unsigned int*)image.scanLine(y); + for(x = 0; x < xSize; ++x) + { + setColor(&color, x, y); + *p = color.rgb(); + ++p; + } + } + if (QColor::numBitPlanes() <= 8) + { + QColor* standardPalette = standardColorsPalette(); + KImageEffect::dither(image, standardPalette, STANDARD_PALETTE_SIZE); + delete[] standardPalette; + } + } + pixmap->convertFromImage(image); +} + +#include "kxycolorselector.moc" |