#include "minidisplay.h"

 #include <QPainter>

 MiniDisplay::MiniDisplay(QQuickItem *parent):

     QQuickItem(parent)

 {

     // By default, QQuickItem does not draw anything. If you subclass

     // QQuickItem to create a visual item, you will need to uncomment the

     // following line and re-implement updatePaintNode()

     // setFlag(ItemHasContents, true);

     //

     //qDebug() << "New MiniDisplay";

 }

 MiniDisplay::~MiniDisplay()

 {

     //qDebug() << "Delete MiniDisplay";

 }

 void MiniDisplay::open()

 {

     if (iDisplay.Open())

     {

         emit opened();

         emit statusChanged();

     }

     else

     {

         emit openError();

     }

 }

 void MiniDisplay::close()

 {

     iDisplay.Close();

     emit closed();

     emit statusChanged();

 }

 bool MiniDisplay::isOpen()

 {

     return iDisplay.IsOpen();

 }

 void MiniDisplay::clear()

 {

     if (!iDisplay.IsOpen()) return;

     //

     iDisplay.Clear();

 }

 void MiniDisplay::fill()

 {

     if (!iDisplay.IsOpen()) return;

     //

     iDisplay.SetAllPixels(0xFF);

 }

 void MiniDisplay::swapBuffers()

 {

     if (!iDisplay.IsOpen()) return;

     //

     iDisplay.SwapBuffers();

 }

 /**

  * @brief setFont

  * @param aFont

  */

 void MiniDisplay::setFont(const QFont& aFont)

 {

     iFont=aFont;

     iFont.setStyleStrategy(QFont::NoAntialias);

     QString strDemo="0123456789ABCDEF";

     QFontMetrics metrics(iFont);

     int w=metrics.width(strDemo);

     int h=metrics.height();

     QSize size(w,h);

     QImage image(size,QImage::Format_Mono);

     image.fill(0xFFFFFFFF);

     //Draw some text into our image

     {

         QPainter painter(&image);

         //painter.begin(&image);

         painter.setPen(0xFF000000);

         painter.setFont(iFont);

         painter.drawText(0,metrics.ascent(),strDemo);

     }

     //Save image as PNG for validation

     image.save("font.png");

     //

     //int sizeInBytes=image.byteCount();

     int pixelCount=w*h;

     BitArray bits(pixelCount);

     for (int i=0;i<w;i++)

         {

         for (int j=0;j<h;j++)

             {

             QRgb color=image.pixel(i,j);

             if (color!=0xffffffff)

                 {

                 bits.SetBit(i*h+j);

                 }

             }

         }

     iDisplay.Clear();

     iDisplay.BitBlit(bits,w,h,0,0);

     iDisplay.SwapBuffers();

     //

 }