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/*
* Copyright (c) 2004 Boudewijn Rempt
* (c) 2005 Bart Coppens <kde@bartcoppens.be>
*
* 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 <qpainter.h>
#include <qpixmap.h>
#include <qlabel.h>
#include <qcombobox.h>
#include <qbuttongroup.h>
#include <qpushbutton.h>
#include <qscrollbar.h>
#include <qtooltip.h>
#include <kdebug.h>
#include "kis_channelinfo.h"
#include "kis_histogram_view.h"
#include "kis_histogram_widget.h"
#include "kis_histogram.h"
#include "kis_global.h"
#include "kis_types.h"
#include "kis_layer.h"
#include "kis_paint_device.h"
#include "kis_colorspace.h"
KisHistogramWidget::KisHistogramWidget(QWidget *parent, const char *name)
: super(parent, name)
{
m_from = 0.0;
m_width = 0.0;
}
KisHistogramWidget::~KisHistogramWidget()
{
}
void KisHistogramWidget::setPaintDevice(KisPaintDeviceSP dev)
{
grpType->disconnect(this);
cmbChannel->disconnect(this);
m_histogramView->setPaintDevice(dev);
setActiveChannel(0); // So we have the colored one if there are colors
// The channels
cmbChannel->clear();
cmbChannel->insertStringList(m_histogramView->channelStrings());
cmbChannel->setCurrentItem(0);
// View display
currentView->setMinValue(0);
currentView->setMaxValue(100);
updateEnabled();
m_from = m_histogramView->currentProducer()->viewFrom();
m_width = m_histogramView->currentProducer()->viewWidth();
connect(grpType, SIGNAL(clicked(int)), this, SLOT(slotTypeSwitched(int)));
connect(cmbChannel, SIGNAL(activated(int)), this, SLOT(setActiveChannel(int)));
connect(zoomIn, SIGNAL(clicked()), this, SLOT(slotZoomIn()));
connect(zoomOut, SIGNAL(clicked()), this, SLOT(slotZoomOut()));
connect(currentView, SIGNAL(valueChanged(int)), this, SLOT(slide(int)));
}
void KisHistogramWidget::setActiveChannel(int channel)
{
m_histogramView->setActiveChannel(channel);
updateEnabled();
}
void KisHistogramWidget::slotTypeSwitched(int id)
{
if (id == LINEAR)
m_histogramView->setHistogramType(LINEAR);
else if (id == LOGARITHMIC)
m_histogramView->setHistogramType(LOGARITHMIC);
}
void KisHistogramWidget::setView(double from, double size)
{
m_from = from;
m_width = size;
if (m_from + m_width > 1.0)
m_from = 1.0 - m_width;
m_histogramView->setView(m_from, m_width);
updateEnabled();
}
void KisHistogramWidget::slotZoomIn() {
if ((m_width / 2) >= m_histogramView->currentProducer()->maximalZoom()) {
setView(m_from, m_width / 2);
}
}
void KisHistogramWidget::slotZoomOut() {
if (m_width * 2 <= 1.0) {
setView(m_from, m_width * 2);
}
}
void KisHistogramWidget::slide(int val) {
// Beware: at the END (e.g. 100), we want to still view m_width:
setView((static_cast<double>(val) / 100.0) * (1.0 - m_width), m_width);
}
void KisHistogramWidget::updateEnabled() {
if (m_histogramView->currentProducer()->maximalZoom() < 1.0) {
if ((m_width / 2) >= m_histogramView->currentProducer()->maximalZoom()) {
zoomIn->setEnabled(true);
} else {
zoomIn->setEnabled(false);
}
if (m_width * 2 <= 1.0) {
zoomOut->setEnabled(true);
} else {
zoomOut->setEnabled(false);
}
if (m_width < 1.0)
currentView->setEnabled(true);
else
currentView->setEnabled(false);
} else {
zoomIn->setEnabled(false);
zoomOut->setEnabled(false);
currentView->setEnabled(false);
}
}
#include "kis_histogram_widget.moc"
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