contactphoto.cpp

   1
   2 #include "contactphoto.h"
   3 #include <QPixmap>
   4 #include <QPainter>
   5 #include <QGraphicsSceneEvent>
   6 #include <QImage>
   7 #include <math.h>
   8 #include <QDebug>
   9
  10 static const double pi = 3.14159265359;
  11
  12
  13 ContactPhoto::ContactPhoto(QGraphicsWidget *parent,
  14                            QGraphicsScene *scene): QGraphicsWidget( parent ),
  15                                                    grabbed( false ),
  16                                                    photo( 0 ), source( 0 ),
  17                                                    shadow( 0 ), result( 0 )
  18 {
  19     QRectF tmp;
  20     if (parent)
  21         tmp = QRectF(10, 10, parent->geometry().width()/3,
  22                      parent->geometry().height()/3);
  23     else
  24             tmp = QRectF(10, 10, 100, 200);
  25
  26     setGeometry(tmp);
  27
  28     setAcceptsHoverEvents(true);
  29     setFlag(ItemIgnoresParentOpacity);
  30
  31 }
  32
  33 void ContactPhoto::setPhoto(const QString &pixPath)
  34 {
  35     if ( !source )
  36         source = new QImage;
  37     source->load( pixPath );
  38
  39     if ( photo )
  40         delete photo;
  41     photo = new QPixmap( QPixmap::fromImage( *source ) );
  42
  43 }
  44
  45 ContactPhoto::~ContactPhoto()
  46 {
  47
  48     delete photo;
  49     delete source;
  50     delete shadow;
  51     delete result;
  52
  53     qDebug() << "contactphoto result: " << result << "\n";
  54 }
  55
  56 void ContactPhoto::setShadow(const QString &pixPath)
  57 {
  58     QSize size(110, 110);
  59
  60     if ( !shadow )
  61         shadow = new QImage;
  62     shadow->load( pixPath );
  63
  64     qDebug() << "contactphoto  result: " << result;
  65     if ( !result )
  66         result = new QImage( size, QImage::Format_ARGB32_Premultiplied );
  67     qDebug() << "contactphoto result: " << result;
  68
  69     createShadow();
  70 }
  71
  72 void ContactPhoto::createShadow()
  73 {
  74
  75     QPainter painter( result );
  76     painter.setCompositionMode(QPainter::CompositionMode_Source);
  77     painter.fillRect(result->rect(), Qt::transparent);
  78     painter.setCompositionMode(QPainter::CompositionMode_SourceOver);
  79     painter.drawImage(-10, -10, *shadow);
  80     painter.setCompositionMode(QPainter::CompositionMode_SourceOver);
  81     painter.drawImage(0, 0, *source);
  82     painter.setCompositionMode(QPainter::CompositionMode_DestinationOver);
  83     painter.fillRect(result->rect(), Qt::transparent);
  84     painter.end();
  85
  86     if ( photo )
  87         delete photo;
  88     photo = new QPixmap( QPixmap::fromImage( *result ) );
  89
  90 }
  91 void ContactPhoto::paint(QPainter *painter, const QStyleOptionGraphicsItem *option,
  92            QWidget *widget)
  93 {
  94         Q_UNUSED(widget);
  95         Q_UNUSED(option);
  96         painter->drawPixmap(QPoint(10, 10), *photo);
  97         /* TODO: make a round image */
  98 }
  99
 100 QRectF ContactPhoto::boundingRect() const
 101 {
 102     return QRectF(-100, -100, 200, 200);
 103 }
 104
 105
 106 /* TODO: cleanup this mess! */
 107 /***************************************************************************/
 108 static qreal lengthForPos(const QPointF &pos)
 109 {
 110     return ::sqrt(pos.x() * pos.x() + pos.y() * pos.y());
 111 }
 112
 113 static qreal angleForPos(const QPointF &pos)
 114 {
 115     qreal angle = ::acos(pos.x() / lengthForPos(pos));
 116     if (pos.y() > 0)
 117         angle = pi * 2.0 - angle;
 118     return angle;
 119 }
 120
 121 void ContactPhoto::mousePressEvent(QGraphicsSceneMouseEvent *event)
 122 {
 123     return QGraphicsItem::mousePressEvent(event);
 124 }
 125
 126 void ContactPhoto::mouseMoveEvent(QGraphicsSceneMouseEvent *event)
 127 {
 128     if (!grabbed)
 129         return QGraphicsItem::mouseMoveEvent(event);
 130
 131     /* TODO: use it for something useful */
 132     QPointF buttonDownPos = mapFromScene(event->buttonDownScenePos(Qt::LeftButton));
 133
 134 }
 135
 136 void ContactPhoto::mouseReleaseEvent(QGraphicsSceneMouseEvent *event)
 137 {
 138     if (!grabbed)
 139         return QGraphicsItem::mouseReleaseEvent(event);
 140
 141     grabbed = false;
 142     update();
 143 }
 144
 145
 146 void ContactPhoto::setHover(qreal value)
 147 {
 148     hover = value;
 149     update();
 150 }