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koffice/lib/kopainter/ko_cmyk_widget.cc

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/*
* This file is part of KOffice
*
* Copyright (c) 1999 Matthias Elter (me@kde.org)
* Copyright (c) 2001-2002 Igor Jansen (rm@kde.org)
* Copyright (c) 2005 Tim Beaulen (tbscope@gmail.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.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
*/
#include "ko_cmyk_widget.h"
#include <qlayout.h>
#include <qhbox.h>
#include <qlabel.h>
#include <qspinbox.h>
#include <qtooltip.h>
#include <qcolor.h>
#include <kdebug.h>
#include <kglobal.h>
#include <klocale.h>
#include <koFrameButton.h>
#include <koColorSlider.h>
#include <kcolordialog.h>
#include <kdualcolorbutton.h>
KoCMYKWidget::KoCMYKWidget(QWidget *parent, const char *name) : super(parent, name)
{
m_ColorButton = new KDualColorButton(this);
m_ColorButton -> setFixedSize(m_ColorButton->sizeHint());
QGridLayout *mGrid = new QGridLayout(this, 4, 5, 5, 2);
/* setup color sliders */
mCSlider = new KoColorSlider(this);
mCSlider->setMaximumHeight(20);
mCSlider->slotSetRange(0, 255);
mCSlider->setFocusPolicy( QWidget::ClickFocus );
mMSlider = new KoColorSlider(this);
mMSlider->setMaximumHeight(20);
mMSlider->slotSetRange(0, 255);
mMSlider->setFocusPolicy( QWidget::ClickFocus );
mYSlider = new KoColorSlider(this);
mYSlider->setMaximumHeight(20);
mYSlider->slotSetRange(0, 255);
mYSlider->setFocusPolicy( QWidget::ClickFocus );
mKSlider = new KoColorSlider(this);
mKSlider->setMaximumHeight(20);
mKSlider->slotSetRange(0, 255);
mKSlider->setFocusPolicy( QWidget::ClickFocus );
/* setup slider labels */
mCLabel = new QLabel("C", this);
mCLabel->setFixedWidth(12);
mCLabel->setFixedHeight(20);
mMLabel = new QLabel("M", this);
mMLabel->setFixedWidth(12);
mMLabel->setFixedHeight(20);
mYLabel = new QLabel("Y", this);
mYLabel->setFixedWidth(12);
mYLabel->setFixedHeight(20);
mKLabel = new QLabel("K", this);
mKLabel->setFixedWidth(12);
mKLabel->setFixedHeight(20);
/* setup spin box */
mCIn = new QSpinBox(0, 255, 1, this);
mCIn->setFixedWidth(50);
mCIn->setFixedHeight(20);
mCIn->setFocusPolicy( QWidget::ClickFocus );
QToolTip::add( mCIn, i18n( "Cyan" ) );
mMIn = new QSpinBox(0, 255, 1, this);
mMIn->setFixedWidth(50);
mMIn->setFixedHeight(20);
mMIn->setFocusPolicy( QWidget::ClickFocus );
QToolTip::add( mMIn, i18n( "Magenta" ) );
mYIn = new QSpinBox(0, 255, 1, this);
mYIn->setFixedWidth(50);
mYIn->setFixedHeight(20);
mYIn->setFocusPolicy( QWidget::ClickFocus );
QToolTip::add( mYIn, i18n( "Yellow" ) );
mKIn = new QSpinBox(0, 255, 1, this);
mKIn->setFixedWidth(50);
mKIn->setFixedHeight(20);
mKIn->setFocusPolicy( QWidget::ClickFocus );
QToolTip::add( mKIn, i18n( "Black" ) );
mGrid->addMultiCellWidget(m_ColorButton, 0, 4, 0, 0, Qt::AlignTop);
mGrid->addWidget(mCLabel, 0, 1);
mGrid->addWidget(mMLabel, 1, 1);
mGrid->addWidget(mYLabel, 2, 1);
mGrid->addWidget(mKLabel, 3, 1);
mGrid->addMultiCellWidget(mCSlider, 0, 0, 2, 3);
mGrid->addMultiCellWidget(mMSlider, 1, 1, 2, 3);
mGrid->addMultiCellWidget(mYSlider, 2, 2, 2, 3);
mGrid->addMultiCellWidget(mKSlider, 3, 3, 2, 3);
mGrid->addWidget(mCIn, 0, 4);
mGrid->addWidget(mMIn, 1, 4);
mGrid->addWidget(mYIn, 2, 4);
mGrid->addWidget(mKIn, 3, 4);
connect(m_ColorButton, SIGNAL(fgChanged(const QColor &)), this, SLOT(slotFGColorSelected(const QColor &)));
connect(m_ColorButton, SIGNAL(bgChanged(const QColor &)), this, SLOT(slotBGColorSelected(const QColor &)));
/* connect color sliders */
connect(mCSlider, SIGNAL(valueChanged(int)), this, SLOT(slotCChanged(int)));
connect(mMSlider, SIGNAL(valueChanged(int)), this, SLOT(slotMChanged(int)));
connect(mYSlider, SIGNAL(valueChanged(int)), this, SLOT(slotYChanged(int)));
connect(mKSlider, SIGNAL(valueChanged(int)), this, SLOT(slotKChanged(int)));
/* connect spin box */
connect(mCIn, SIGNAL(valueChanged(int)), this, SLOT(slotCChanged(int)));
connect(mMIn, SIGNAL(valueChanged(int)), this, SLOT(slotMChanged(int)));
connect(mYIn, SIGNAL(valueChanged(int)), this, SLOT(slotYChanged(int)));
connect(mKIn, SIGNAL(valueChanged(int)), this, SLOT(slotKChanged(int)));
}
void KoCMYKWidget::slotCChanged(int c)
{
if (m_ColorButton->current() == KDualColorButton::Foreground){
CMYKColor col = RgbToCmyk(m_fgColor);
col.C = c / 255.0;
m_fgColor = CmykToRgb(col);
m_ColorButton->setCurrent(KDualColorButton::Foreground);
emit sigFgColorChanged(m_fgColor);
}
else{
CMYKColor col = RgbToCmyk(m_bgColor);
col.C = c / 255.0;
m_bgColor = CmykToRgb(col);
m_ColorButton->setCurrent(KDualColorButton::Background);
emit sigBgColorChanged(m_bgColor);
}
}
void KoCMYKWidget::slotMChanged(int m)
{
if (m_ColorButton->current() == KDualColorButton::Foreground){
CMYKColor col = RgbToCmyk(m_fgColor);
col.M = m / 255.0;
m_fgColor = CmykToRgb(col);
m_ColorButton->setCurrent(KDualColorButton::Foreground);
emit sigFgColorChanged(m_fgColor);
}
else{
CMYKColor col = RgbToCmyk(m_bgColor);
col.M = m / 255.0;
m_bgColor = CmykToRgb(col);
m_ColorButton->setCurrent(KDualColorButton::Background);
emit sigBgColorChanged(m_bgColor);
}
}
void KoCMYKWidget::slotYChanged(int y)
{
if (m_ColorButton->current() == KDualColorButton::Foreground){
CMYKColor col = RgbToCmyk(m_fgColor);
col.Y = y / 255.0;
m_fgColor = CmykToRgb(col);
m_ColorButton->setCurrent(KDualColorButton::Foreground);
emit sigFgColorChanged(m_fgColor);
}
else{
CMYKColor col = RgbToCmyk(m_bgColor);
col.Y = y / 255.0;
m_bgColor = CmykToRgb(col);
m_ColorButton->setCurrent(KDualColorButton::Background);
emit sigBgColorChanged(m_bgColor);
}
}
void KoCMYKWidget::slotKChanged(int k)
{
if (m_ColorButton->current() == KDualColorButton::Foreground){
CMYKColor col = RgbToCmyk(m_fgColor);
col.K = k / 255.0;
m_fgColor = CmykToRgb(col);
m_ColorButton->setCurrent(KDualColorButton::Foreground);
emit sigFgColorChanged(m_fgColor);
}
else{
CMYKColor col = RgbToCmyk(m_bgColor);
col.K = k / 255.0;
m_bgColor = CmykToRgb(col);
m_ColorButton->setCurrent(KDualColorButton::Background);
emit sigBgColorChanged(m_bgColor);
}
}
void KoCMYKWidget::setFgColor(const QColor & c)
{
update(c, m_bgColor);
}
void KoCMYKWidget::setBgColor(const QColor & c)
{
update(m_fgColor, c);
}
void KoCMYKWidget::update(const QColor fgColor, const QColor bgColor)
{
m_fgColor = fgColor;
m_bgColor = bgColor;
QColor color = (m_ColorButton->current() == KDualColorButton::Foreground)? m_fgColor : m_bgColor;
CMYKColor col = RgbToCmyk(color);
disconnect(m_ColorButton, SIGNAL(fgChanged(const QColor &)), this, SLOT(slotFGColorSelected(const QColor &)));
disconnect(m_ColorButton, SIGNAL(bgChanged(const QColor &)), this, SLOT(slotBGColorSelected(const QColor &)));
m_ColorButton->setForeground( m_fgColor );
m_ColorButton->setBackground( m_bgColor );
connect(m_ColorButton, SIGNAL(fgChanged(const QColor &)), this, SLOT(slotFGColorSelected(const QColor &)));
connect(m_ColorButton, SIGNAL(bgChanged(const QColor &)), this, SLOT(slotBGColorSelected(const QColor &)));
mCSlider->blockSignals(true);
mCIn->blockSignals(true);
mMSlider->blockSignals(true);
mMIn->blockSignals(true);
mYSlider->blockSignals(true);
mYIn->blockSignals(true);
mKSlider->blockSignals(true);
mKIn->blockSignals(true);
CMYKColor minC = col;
minC.C = 0.0;
CMYKColor maxC = col;
maxC.C = 1.0;
mCSlider->slotSetColor1(CmykToRgb(minC));
mCSlider->slotSetColor2(CmykToRgb(maxC));
mCSlider->slotSetValue(int(col.C * 255));
mCIn->setValue(int(col.C * 255));
CMYKColor minM = col;
minM.M = 0.0;
CMYKColor maxM = col;
maxM.M = 1.0;
mMSlider->slotSetColor1(CmykToRgb(minM));
mMSlider->slotSetColor2(CmykToRgb(maxM));
mMSlider->slotSetValue(int(col.M * 255));
mMIn->setValue(int(col.M * 255));
CMYKColor minY = col;
minY.Y = 0.0;
CMYKColor maxY = col;
maxY.Y = 1.0;
mYSlider->slotSetColor1(CmykToRgb(minY));
mYSlider->slotSetColor2(CmykToRgb(maxY));
mYSlider->slotSetValue(int(col.Y * 255));
mYIn->setValue(int(col.Y * 255));
CMYKColor minK = col;
minK.K = 0.0;
CMYKColor maxK = col;
maxK.K = 1.0;
mKSlider->slotSetColor1(CmykToRgb(minK));
mKSlider->slotSetColor2(CmykToRgb(maxK));
mKSlider->slotSetValue(int(col.K * 255));
mKIn->setValue(int(col.K * 255));
mCSlider->blockSignals(false);
mCIn->blockSignals(false);
mMSlider->blockSignals(false);
mMIn->blockSignals(false);
mYSlider->blockSignals(false);
mYIn->blockSignals(false);
mKSlider->blockSignals(false);
mKIn->blockSignals(false);
}
void KoCMYKWidget::slotFGColorSelected(const QColor& c)
{
m_fgColor = QColor(c);
emit sigFgColorChanged(m_fgColor);
}
void KoCMYKWidget::slotBGColorSelected(const QColor& c)
{
m_bgColor = QColor(c);
emit sigBgColorChanged(m_bgColor);
}
CMYKColor KoCMYKWidget::RgbToCmyk(const QColor& col)
{
kdDebug() << "--[ KoCMYKWidget::RgbToCmyk ]--------------------------------------" << endl;
kdDebug() << endl;
// RGB to CMY
float r = col.red() / 255.0;
float g = col.green() / 255.0;
float b = col.blue() / 255.0;
kdDebug() << "float r = col.red() / 255.0;" << endl;
kdDebug() << " r = " << col.red() << " / 255.0 = " << r << endl;
kdDebug() << "float g = col.green() / 255.0;" << endl;
kdDebug() << " g = " << col.green() << " / 255.0 = " << g << endl;
kdDebug() << "float b = col.blue() / 255.0;" << endl;
kdDebug() << " b = " << col.blue() << " / 255.0 = " << b << endl;
kdDebug() << endl;
float ac = 1.0 - r;
float am = 1.0 - g;
float ay = 1.0 - b;
kdDebug() << "float ac = 1.0 - r;" << endl;
kdDebug() << " ac = 1.0 - " << r << " = " << ac << endl;
kdDebug() << "float am = 1.0 - g;" << endl;
kdDebug() << " am = 1.0 - " << g << " = " << am << endl;
kdDebug() << "float ay = 1.0 - b;" << endl;
kdDebug() << " ay = 1.0 - " << b << " = " << ay << endl;
kdDebug() << endl;
// CMY to CMYK
float c = 0.0;
float m = 0.0;
float y = 0.0;
float k = 0.0;
if ((r == 0.0) && (g == 0.0) && (b == 0.0))
{
kdDebug() << "r = g = b = 0.0: Therefor k = 1.0" << endl;
k = 1.0;
}
else
{
kdDebug() << "r = g = b != 0.0: Therefor k = min(ac,am,ay)" << endl;
if (kMin(ac,am) == ac)
k = kMin(ac,ay);
else
k = kMin(am,ay);
c = (ac - k) / (1.0 - k);
m = (am - k) / (1.0 - k);
y = (ay - k) / (1.0 - k);
}
kdDebug() << "float k = " << k << endl;
kdDebug() << endl;
kdDebug() << "float c = (ac - k) / (1.0 - k);" << endl;
kdDebug() << " c = (" << ac << " - " << k << ") / (1.0 - " << k << ") = " << c << endl;
kdDebug() << "float m = (am - k) / (1.0 - k);" << endl;
kdDebug() << " m = (" << am << " - " << k << ") / (1.0 - " << k << ") = " << m << endl;
kdDebug() << "float y = (ay - k) / (1.0 - k);" << endl;
kdDebug() << " y = (" << ay << " - " << k << ") / (1.0 - " << k << ") = " << y << endl;
kdDebug() << endl;
CMYKColor color;
color.C = c;
color.M = m;
color.Y = y;
color.K = k;
kdDebug() << "===================================================================" << endl;
return color;
}
QColor KoCMYKWidget::CmykToRgb(const CMYKColor& c)
{
// CMYK to CMY
float ac = kMin(1.0, c.C * (1.0 - c.K) + c.K);
float am = kMin(1.0, c.M * (1.0 - c.K) + c.K);
float ay = kMin(1.0, c.Y * (1.0 - c.K) + c.K);
// CMY to RGB
int r = int((1.0 - ac) * 255.0);
int g = int((1.0 - am) * 255.0);
int b = int((1.0 - ay) * 255.0);
QColor color;
color.setRgb(r,g,b);
return color;
}
#include "ko_cmyk_widget.moc"