Qt网络编程电子白板

#include "shapes.h" int Shapes::m_idBase = 0; int Shapes::generateLocalId() { return ++m_idBase; } //SLine SLine::SLine():Shapes(tt_Line),m_rcBounding(0,0,0,0) { } void SLine::setStartPoit(const QPointF &pos) { setPos(pos); m_startPosScene = pos; } void SLine::setEndPoint(const QPointF &pos) { m_endPosScene = pos; qreal endx = m_endPosScene.x(); qreal endy = m_endPosScene.y(); qreal startx = m_startPosScene.x(); qreal starty = m_startPosScene.y(); m_rcBounding.setWidth(qAbs(endx-startx)); m_rcBounding.setHeight(qAbs(endy-starty)); QPointF startPoint; QPointF endPoint; if(endx < startx) { startx = endx; startPoint.setX(m_rcBounding.width()); endPoint.setX(0); } else { startPoint.setX(0); endPoint.setX(m_rcBounding.width()); } if(endy < starty) { starty = endy; startPoint.setY(m_rcBounding.height()); endPoint.setY(0); } else { startPoint.setY(0); endPoint.setY(m_rcBounding.height()); } m_line.setPoints(startPoint,endPoint); setPos(startx,starty); } void SLine::setStrokeWidth(float w) { m_strokeWidth = w; m_pen.setWidthF(w); } void SLine::setStrokeColor(const QColor &color) { m_strokeColor = color; m_pen.setColor(color); } QRectF SLine::boundingRect() const { return m_rcBounding; } void SLine::paint(QPainter *painter, const QStyleOptionGraphicsItem *option, QWidget *widget) { painter->save(); painter->setPen(m_pen); painter->drawLine(m_line); painter->restore(); } bool SLine::isValid() { return !m_line.isNull(); } void SLine::serialize(QJsonObject &obj) { obj.insert("type",QJsonValue("line")); QJsonObject data; data.insert("color",QJsonValue((qint64)(m_strokeColor.rgba()))); data.insert("line_width",QJsonValue(m_strokeWidth)); data.insert("fill_color",QJsonValue((qint64)(m_fillColor.rgba()))); QJsonArray points; points.append(QJsonValue(m_startPosScene.x())); points.append(QJsonValue(m_startPosScene.y())); points.append(QJsonValue(m_endPosScene.x())); points.append(QJsonValue(m_endPosScene.y())); data.insert("points",QJsonValue(points)); obj.insert("data",QJsonValue(data)); } SRectangle::SRectangle(int type) :Shapes(type),m_rcBounding(0,0,0,0) { } void SRectangle::setStartPoit(const QPointF &pos) { setPos(pos); m_startPosScene = pos; } void SRectangle::setEndPoint(const QPointF &pos) { m_endPosScene = pos; qreal endx = m_endPosScene.x(); qreal endy = m_endPosScene.y(); qreal startx = m_startPosScene.x(); qreal starty = m_startPosScene.y(); m_rcBounding.setWidth(qAbs(endx-startx)); m_rcBounding.setHeight(qAbs(endy-starty)); if(endx <startx) { startx = endx; } if (endy < starty) { starty = endy; } setPos(startx,starty); } void SRectangle::setStrokeWidth(float w) { m_strokeWidth = w; m_pen.setWidthF(w); } void SRectangle::setStrokeColor(const QColor &color) { m_strokeColor = color; m_pen.setColor(color); } void SRectangle::setFillColor(const QColor &color) { m_fillColor = color; } QRectF SRectangle::boundingRect() const { return m_rcBounding; } void SRectangle::paint(QPainter *painter, const QStyleOptionGraphicsItem *option, QWidget *widget) { painter->save(); if(m_strokeWidth > 0.1) painter->setPen(m_pen); else painter->setPen(Qt::NoPen); if(m_fillColor == Qt::transparent) painter->setBrush(Qt::NoBrush); else painter->setBrush(m_fillColor); painter->drawRect(m_rcBounding); painter->restore(); } bool SRectangle::isValid() { return m_rcBounding.width() >= 1 && m_rcBounding.height() >= 1; } void SRectangle::serialize(QJsonObject &obj) { switch (m_type) { case tt_Rectangle: obj.insert("type",QJsonValue("rect")); break; case tt_Oval: obj.insert("type",QJsonValue("oval")); break; case tt_Triangle: obj.insert("type",QJsonValue("triangle")); break; default: return; } QJsonObject data; data.insert("color",QJsonValue((qint64)m_strokeColor.rgba())); data.insert("line_width",QJsonValue(m_strokeWidth)); data.insert("fill_color",QJsonValue((qint64)m_fillColor.rgba())); QJsonArray points; points.append(QJsonValue(m_startPosScene.x())); points.append(QJsonValue(m_startPosScene.y())); points.append(QJsonValue(m_endPosScene.x())); points.append(QJsonValue(m_endPosScene.y())); data.insert("points",QJsonValue(points)); obj.insert("data",QJsonValue(data)); } SOval::SOval() :SRectangle(tt_Oval) { } void SOval::paint(QPainter *painter, const QStyleOptionGraphicsItem *option, QWidget *widget) { painter->save(); if(m_strokeWidth > 0.1) painter->setPen(m_pen); else painter->setPen(Qt::NoPen); if(m_fillColor == Qt::transparent) painter->setBrush(Qt::NoBrush); else painter->setBrush(m_fillColor); painter->drawEllipse(m_rcBounding); painter->restore(); } STriangle::STriangle():SRectangle(tt_Triangle) { } void STriangle::paint(QPainter *painter, const QStyleOptionGraphicsItem *option, QWidget *widget) { painter->save(); if(m_strokeWidth > 0.1) painter->setPen(m_pen); else painter->setPen(Qt::NoPen); if(m_fillColor == Qt::transparent) painter->setBrush(Qt::NoBrush); else painter->setBrush(m_fillColor); QPointF points[3] = { m_rcBounding.bottomLeft(), m_rcBounding.bottomRight(), QPointF(m_rcBounding.width() / 2,0) }; painter->drawPolygon(points,3); painter->restore(); } SGraffiti::SGraffiti() :Shapes(tt_Graffiti),m_rcBounding(0,0,0,0) { } void SGraffiti::setStartPoit(const QPointF &pos) { setPos(pos); m_startPosScene = pos; m_path.moveTo(pos); } void SGraffiti::setEndPoint(const QPointF &pos) { m_path.lineTo(pos); m_rcBounding = m_path.boundingRect(); m_topLeftInScene = m_rcBounding.topLeft(); setPos(m_topLeftInScene); m_rcBounding.moveTo(0,0); } void SGraffiti::setStrokeWidth(float w) { m_strokeWidth = w; m_pen.setWidth(w); } void SGraffiti::setStrokeColor(const QColor &color) { m_strokeColor = color; m_pen.setColor(color); } QRectF SGraffiti::boundingRect() const { return m_rcBounding; } void SGraffiti::paint(QPainter *painter, const QStyleOptionGraphicsItem *option, QWidget *widget){ painter->save(); painter->setPen(m_pen); QPainterPath path = m_path.translated(-m_topLeftInScene); painter->drawPath(path); painter->restore(); } void SGraffiti::setPath(QPainterPath &path) { m_path = path; m_rcBounding = m_path.boundingRect(); m_topLeftInScene = m_rcBounding.topLeft(); setPos(m_topLeftInScene); m_rcBounding.moveTo(0,0); } bool SGraffiti::isValid() { return !m_path.isEmpty(); } void SGraffiti::serialize(QJsonObject &obj) { obj.insert("type",QJsonValue("graffiti")); QJsonObject data; data.insert("color",QJsonValue((qint64)m_strokeColor.rgba())); data.insert("line_width",QJsonValue(m_strokeWidth)); QJsonArray points; int ptCount = m_path.elementCount(); QPainterPath::Element e; for(int i= 0;i < ptCount; i++) { e = m_path.elementAt(i); points.append(QJsonValue(e.x)); points.append(QJsonValue(e.y)); } data.insert("points",QJsonValue(points)); obj.insert("data",QJsonValue(data)); }