/* palette.cc */

#include "palette.h"
#include "prop.h" // BoolField, ...

#include <QApplication>
#include <QMouseEvent>
#include <QPixmap>
#include <QBitmap>
#include <QPainter>

#if QT_VERSION >= 0x040600
   #define QT_4_6
#endif

/* ---------------------------------------------------------------------- */

void MyPalette::addPage (QString name, MyPalettePage * page)
{
   addTab (page, name);
}

/* ---------------------------------------------------------------------- */

void MyPalettePage::addItem (QString name, MyPaletteItem * item)
{
   if (name != "")
      item->setText (name);
   addWidget (item);
}

/* ---------------------------------------------------------------------- */

/*
void MyPaletteItem::mousePressEvent (QMouseEvent * event)
{
   if (event->button() == Qt::LeftButton)
      dragStartPosition = event->pos ();
}

void MyPaletteItem::mouseMoveEvent (QMouseEvent * event)
{
   if (event->button() == Qt::LeftButton ) &&
      (event->pos() - dragStartPosition).manhattanLength() >= QApplication::startDragDistance())
   {
      QDrag * drag = new QDrag (this);
      QMimeData * mimeData = new QMimeData;

      // mimeData->setData (mimeType, data);
      mimeData->setText ("hello");
      drag->setMimeData (mimeData);

      Qt::DropAction dropAction = drag->exec (Qt::CopyAction | Qt::MoveAction);
   }
}
*/

void MyPaletteItem::mousePressEvent (QMouseEvent * event)
{
   if (event->button() == Qt::LeftButton )
   {
      QDrag * drag = new QDrag (this);

      QMimeData * mimeData = new QMimeData;
      setupMimeData (mimeData);
      drag->setMimeData (mimeData);

      setupPixmap (drag);

      Qt::DropAction dropAction = drag->exec (Qt::MoveAction | Qt::CopyAction | Qt::LinkAction);
   }
}

/* ---------------------------------------------------------------------- */

ColorPaletteItem::ColorPaletteItem (QString s)
{
   setText (s);
   setToolTip (s);
   setColor (QColor (s));
}

void ColorPaletteItem::setup ()
{
   QPalette p = palette ();
   p.setColor (QPalette::ButtonText, value);
   setPalette (p);

   QPixmap pixmap (12, 12);
   pixmap.fill (Qt::transparent);

   QPainter painter (&pixmap);
   painter.setPen (Qt::NoPen);
   painter.setBrush (QBrush (value));
   painter.drawEllipse (0, 0, 12, 12);
   painter.end ();

   setIcon (pixmap);
}

void ColorPaletteItem::setupMimeData (QMimeData * data)
{
    data->setColorData (value);
}

void ColorPaletteItem::setupPixmap (QDrag * drag)
{
   QPixmap pixmap (12, 12);
   pixmap.fill (Qt::transparent);

   QPainter painter (&pixmap);
   // painter.translate (15, 15);
   // painter.setRenderHint (QPainter::Antialiasing);
   painter.setPen (Qt::NoPen);
   painter.setBrush (QBrush (value));
   painter.drawEllipse (0, 0, 12, 12);
   painter.end ();

   // pixmap.setMask (pixmap.createHeuristicMask());
   drag->setPixmap (pixmap);

   drag->setHotSpot (QPoint (6, 6));
}

/* ---------------------------------------------------------------------- */

void AreaPaletteItem::setupMimeData (QMimeData * data)
{
    data->setData ("application/x-qview-area", QByteArray ());
}

void ShapePaletteItem::setupMimeData (QMimeData * data)
{
    data->setData ("application/x-qview-shape", QByteArray ());
}

void FieldPaletteItem::setupMimeData (QMimeData * data)
{
    data->setData ("application/x-qview-field", QByteArray ());
}

/* ---------------------------------------------------------------------- */

MyPalette::MyPalette (QWidget* parent)
   : QTabWidget (parent)
{
    MyPalettePage * page1 = new MyPalettePage;
    page1->addItem ("area", new AreaPaletteTemplate <Area>);
    page1->addAction ("sub area");

    MyPalettePage * page2 = new MyPalettePage;
    page2->addAction ("source");
    page2->addAction ("target");

    MyPalettePage * page3 = new MyPalettePage;
    page3->addItem ("bool", new FieldPaletteTemplate <BoolField>);
    page3->addAction ("enum");
    page3->addAction ("int");
    page3->addAction ("long");
    page3->addAction ("float");
    page3->addAction ("double");
    page3->addAction ("string");

    MyPalettePage * page4 = new MyPalettePage;
    page4->addAction ("triangle");
    page4->addAction ("ellipse");

    MyPalettePage * page5 = new MyPalettePage;
    page5->addItem ("red",  new ColorPaletteItem ("red"));
    page5->addItem ("blue",  new ColorPaletteItem ("blue"));
    page5->addItem ("green", new ColorPaletteItem ("green"));
    page5->addItem ("yellow", new ColorPaletteItem ("yellow"));
    page5->addItem ("orange", new ColorPaletteItem ("orange"));

    this->addPage ("components", page1);
    this->addPage ("ports", page2);
    this->addPage ("fields", page3);
    this->addPage ("shapes", page4);
    this->addPage ("colors", page5);
}

/* ---------------------------------------------------------------------- */