�added plugin: color: quant

src/colors/colors.pro

@@ -1,2 +1,2 @@
 TEMPLATE = subdirs
-SUBDIRS = grayscale-local invert kuwahara stretch-histogram tone-mapping unalpha
+SUBDIRS = grayscale-local invert kuwahara stretch-histogram tone-mapping unalpha quant

src/colors/quant/quant.cpp

@@ -0,0 +1,105 @@
+#include "quant.h"
+#include <QLabel>
+#include <QDialogButtonBox>
+#include <QGridLayout>
+
+#define PLUGIN_NAME "Quant"
+#define PLUGIN_MENU "Filters/Color/Quant"
+#define PLUGIN_VERSION "1.0"
+
+// first parameter is name of plugin, usually same as the library file name
+Q_EXPORT_PLUGIN2(quant, FilterPlugin);
+
+// ********************** Quant Simple *********************
+// clamp an integer in 0-255 range
+#define Clamp(a) ( (a)&(~0xff) ? (uchar)((~a)>>31) : (a) )
+
+void Quant(QImage &img, int red, int green, int blue)
+{
+	int y, x, clr;
+	int r, g, b;
+    int imgW = img.width();
+    int imgH = img.height();
+	red = (red < 2) ? 2 : red;
+	green = (green < 2) ? 2 : green;
+	blue = (blue < 2) ? 2 : blue;
+    for (y = 0; y < imgH; y++)
+    {
+        QRgb *row = (QRgb*)img.constScanLine(y);
+        for (x = 0; x < imgW; x++)
+		{
+            clr = row[x];
+            r = qRed(clr);
+            g = qGreen(clr);
+            b = qBlue(clr);
+			r = (int)((float)r * red * 0.00390625);
+			g = (int)((float)g * green * 0.00390625);
+			b = (int)((float)b * blue * 0.00390625);
+			r = (int)((float)r * 255.0 / (float)(red - 1.0));
+			g = (int)((float)g * 255.0 / (float)(green - 1.0));
+			b = (int)((float)b * 255.0 / (float)(blue - 1.0));
+			r = Clamp(r);
+			g = Clamp(g);
+			b = Clamp(b);
+            row[x] = qRgba(r, g, b, qAlpha(clr));
+        }
+    }
+}
+
+// **************** Bimodal Threshold Dialog ******************
+QuantDialog:: QuantDialog(QWidget *parent) : QDialog(parent)
+{
+    this->setWindowTitle(PLUGIN_NAME);
+    this->resize(320, 158);
+
+    QGridLayout *gridLayout = new QGridLayout(this);
+
+    QLabel *redLabel = new QLabel("Red :", this);
+    gridLayout->addWidget(redLabel, 0, 0, 1, 1);
+    redSpin = new QSpinBox(this);
+    redSpin->setAlignment(Qt::AlignCenter);
+    redSpin->setRange(2, 256);
+    redSpin->setValue(8);
+    gridLayout->addWidget(redSpin, 0, 1, 1, 1);
+
+    QLabel *greenLabel = new QLabel("Green :", this);
+    gridLayout->addWidget(greenLabel, 1, 0, 1, 1);
+    greenSpin = new QSpinBox(this);
+    greenSpin->setAlignment(Qt::AlignCenter);
+    greenSpin->setRange(2,256);
+    greenSpin->setValue(8);
+    gridLayout->addWidget(greenSpin, 1, 1, 1, 1);
+
+    QLabel *blueLabel = new QLabel("Blue :", this);
+    gridLayout->addWidget(blueLabel, 2, 0, 1, 1);
+    blueSpin = new QSpinBox(this);
+    blueSpin->setAlignment(Qt::AlignCenter);
+    blueSpin->setRange(2,256);
+    blueSpin->setValue(8);
+    gridLayout->addWidget(blueSpin, 2, 1, 1, 1);
+
+
+    QDialogButtonBox *buttonBox = new QDialogButtonBox(Qt::Horizontal, this);
+    buttonBox->setStandardButtons(QDialogButtonBox::Cancel|QDialogButtonBox::Ok);
+    gridLayout->addWidget(buttonBox, 3, 0, 1, 2);
+
+    connect(buttonBox, SIGNAL(accepted()), this, SLOT(accept()));
+    connect(buttonBox, SIGNAL(rejected()), this, SLOT(reject()));
+}
+
+QString FilterPlugin:: menuItem()
+{
+    return QString(PLUGIN_MENU);
+}
+
+void FilterPlugin:: onMenuClick()
+{
+    QuantDialog *dlg = new QuantDialog(data->window);
+    if (dlg->exec()==QDialog::Accepted) {
+        int red = dlg->redSpin->value();
+        int green = dlg->greenSpin->value();
+        int blue = dlg->blueSpin->value();
+        Quant(data->image, red, green, blue);
+        emit imageChanged();
+    }
+}

src/colors/quant/quant.h

@@ -0,0 +1,33 @@
+#pragma once
+#include "plugin.h"
+#include <QDialog>
+#include <QSpinBox>
+#include <QCheckBox>
+
+class FilterPlugin : public QObject, Plugin
+{
+    Q_OBJECT
+    Q_INTERFACES(Plugin)
+
+public:
+    QString menuItem();
+
+public slots:
+    void onMenuClick();
+
+signals:
+    void imageChanged();
+    void optimumSizeRequested();
+    void sendNotification(QString title, QString message);
+};
+
+
+class QuantDialog : public QDialog
+{
+public:
+    QSpinBox *redSpin;
+    QSpinBox *greenSpin;
+    QSpinBox *blueSpin;
+
+    QuantDialog(QWidget *parent);
+};

src/colors/quant/quant.pro

@@ -0,0 +1,22 @@
+HEADERS = quant.h
+SOURCES = quant.cpp
+
+TARGET  = $$qtLibraryTarget(quant)
+DESTDIR = ../..
+INCLUDEPATH += $$DESTDIR
+
+TEMPLATE        = lib
+CONFIG         += plugin
+QMAKE_CXXFLAGS  = -std=c++11 -fopenmp
+QMAKE_LFLAGS   += -s
+LIBS           += -lgomp
+
+MOC_DIR =     $$DESTDIR/build
+OBJECTS_DIR = $$DESTDIR/build
+
+unix {
+    INSTALLS += target
+    target.path = /usr/local/share/photoquick/plugins
+}
+
+CONFIG -= debug_and_release