KisThresholdConfigWidget Class Reference

#include <threshold.h>

Inheritance diagram for KisThresholdConfigWidget:

Public Member Functions
KisPropertiesConfigurationSP	configuration () const override
	KisThresholdConfigWidget (QWidget *parent, KisPaintDeviceSP dev)
void	setConfiguration (const KisPropertiesConfigurationSP config) override
	~KisThresholdConfigWidget () override
Public Member Functions inherited from KisConfigWidget
virtual KoCanvasResourcesInterfaceSP	canvasResourcesInterface () const
virtual void	setCanvasResourcesInterface (KoCanvasResourcesInterfaceSP canvasResourcesInterface)
virtual void	setView (KisViewManager *view)
	~KisConfigWidget () override

Public Attributes
Ui::WdgThreshold	m_page

Protected Attributes
bool	m_histlog
QScopedPointer< KisHistogram >	m_histogram

Private Slots
void	slotDrawHistogram (bool logarithmic=false)
void	slotSetThreshold (int)

Additional Inherited Members
Signals inherited from KisConfigWidget
void	sigConfigurationItemChanged ()
void	sigConfigurationUpdated ()
void	sigDropLockedConfig (KisPropertiesConfigurationSP p)
void	sigSaveLockedConfig (KisPropertiesConfigurationSP p)
Protected Member Functions inherited from KisConfigWidget
	KisConfigWidget (QWidget *parent=0, Qt::WindowFlags f=Qt::WindowFlags(), int delay=200)

Detailed Description

Definition at line 55 of file threshold.h.

Constructor & Destructor Documentation

KisThresholdConfigWidget()

KisThresholdConfigWidget::KisThresholdConfigWidget	(	QWidget *	parent,
		KisPaintDeviceSP	dev )

Definition at line 107 of file threshold.cpp.

    : KisConfigWidget(parent)
{
    Q_ASSERT(dev);
    m_page.setupUi(this);
 
    m_page.thresholdGradient->setThreshold(0.5);
    m_page.intThreshold->setValue(128);
 
    connect(m_page.intThreshold, SIGNAL(valueChanged(int)), SIGNAL(sigConfigurationItemChanged()));
    connect(m_page.intThreshold, QOverload<int>::of(&QSpinBox::valueChanged),
        [this](int value)
        {
            KisSignalsBlocker blocker(m_page.thresholdGradient);
            m_page.thresholdGradient->setThreshold(static_cast<qreal>(value) / 255.0);
        }
    );
    connect(m_page.thresholdGradient, SIGNAL(thresholdChanged(qreal)), SIGNAL(sigConfigurationItemChanged()));
    connect(m_page.thresholdGradient, &KisThresholdSlider::thresholdChanged,
        [this](qreal value)
        {
            KisSignalsBlocker blocker(m_page.intThreshold);
            m_page.intThreshold->setValue(static_cast<int>(qRound(value * 255.0)));
        }
    );
 
    connect((QObject*)(m_page.chkLogarithmic), SIGNAL(toggled(bool)), this, SLOT(slotDrawHistogram(bool)));
 
    KoHistogramProducer *producer = new KoGenericLabHistogramProducer();
    m_histogram.reset( new KisHistogram(dev, dev->exactBounds(), producer, LINEAR) );
    m_histlog = false;
    m_page.histview->resize(288,100);
    slotDrawHistogram();
 
}

References connect(), KisPaintDevice::exactBounds(), LINEAR, m_histlog, m_histogram, m_page, KisConfigWidget::sigConfigurationItemChanged(), slotDrawHistogram(), KisThresholdSlider::thresholdChanged(), and value().

~KisThresholdConfigWidget()

KisThresholdConfigWidget::~KisThresholdConfigWidget ( )

override

Definition at line 143 of file threshold.cpp.

{
}

Member Function Documentation

configuration()

KisPropertiesConfigurationSP KisThresholdConfigWidget::configuration ( ) const

overridevirtual

Returns

the configuration

Implements KisConfigWidget.

Definition at line 198 of file threshold.cpp.

{
    KisFilterConfigurationSP config = new KisFilterConfiguration("threshold", 1, KisGlobalResourcesInterface::instance());
    config->setProperty("threshold", m_page.intThreshold->value());
    return config;
}

References KisGlobalResourcesInterface::instance(), and m_page.

setConfiguration()

void KisThresholdConfigWidget::setConfiguration ( const KisPropertiesConfigurationSP config )

overridevirtual

Parameters

config

the configuration for this configuration widget.

Implements KisConfigWidget.

Definition at line 205 of file threshold.cpp.

{
    QVariant value;
    if (config->getProperty("threshold", value)) {
        KisSignalsBlocker blocker(m_page.intThreshold, m_page.thresholdGradient);
        m_page.intThreshold->setValue(value.toUInt());
        m_page.thresholdGradient->setThreshold(static_cast<qreal>(value.toUInt()) / 255.0);
    }
    Q_EMIT sigConfigurationItemChanged();
}

References m_page, KisConfigWidget::sigConfigurationItemChanged(), and value().

slotDrawHistogram

void KisThresholdConfigWidget::slotDrawHistogram ( bool logarithmic = false )

privateslot

Definition at line 147 of file threshold.cpp.

{
    int wHeight = m_page.histview->height();
    int wHeightMinusOne = wHeight - 1;
    int wWidth = m_page.histview->width();
 
    if (m_histlog != logarithmic) {
        // Update the m_histogram
        if (logarithmic)
            m_histogram->setHistogramType(LOGARITHMIC);
        else
            m_histogram->setHistogramType(LINEAR);
        m_histlog = logarithmic;
    }
 
    QPalette appPalette = QApplication::palette();
    QPixmap pix(wWidth-100, wHeight);
 
    pix.fill(QColor(appPalette.color(QPalette::Base)));
    QPainter p(&pix);
 
    p.setPen(QPen(Qt::gray, 1, Qt::SolidLine));
 
    double highest = (double)m_histogram->calculations().getHighest();
    qint32 bins = m_histogram->producer()->numberOfBins();
 
    // use nearest neighbour interpolation
    if (m_histogram->getHistogramType() == LINEAR) {
        double factor = (double)(wHeight - wHeight / 5.0) / highest;
        for (int i = 0; i < wWidth; i++) {
            int binNo = qRound((double)i / wWidth * (bins - 1));
            if ((int)m_histogram->getValue(binNo) != 0)
                p.drawLine(i, wHeightMinusOne, i, wHeightMinusOne - (int)m_histogram->getValue(binNo) * factor);
        }
    } else {
        double factor = (double)(wHeight - wHeight / 5.0) / (double)log(highest);
        for (int i = 0; i < wWidth; i++) {
            int binNo = qRound((double)i / wWidth * (bins - 1)) ;
            if ((int)m_histogram->getValue(binNo) != 0)
                p.drawLine(i, wHeightMinusOne, i, wHeightMinusOne - log((double)m_histogram->getValue(binNo)) * factor);
        }
    }
 
    m_page.histview->setPixmap(pix);
}

References LINEAR, LOGARITHMIC, m_histlog, m_histogram, m_page, and p.

slotSetThreshold

void KisThresholdConfigWidget::slotSetThreshold ( int limit )

privateslot

Definition at line 193 of file threshold.cpp.

{
    m_page.intThreshold->setMaximum(limit - 1);
}

References m_page.

Member Data Documentation

m_histlog

bool KisThresholdConfigWidget::m_histlog

protected

Definition at line 74 of file threshold.h.

m_histogram

QScopedPointer<KisHistogram> KisThresholdConfigWidget::m_histogram

protected

Definition at line 73 of file threshold.h.

m_page

Ui::WdgThreshold KisThresholdConfigWidget::m_page

Definition at line 64 of file threshold.h.

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The documentation for this class was generated from the following files:

• plugins/filters/threshold/threshold.h
• plugins/filters/threshold/threshold.cpp