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Glep FingermanNov. 20, 2017, 3:20 p.m.
QGraphicsItem конструктор с параметрами
Здравствуйте, как передать параметры в конструкторе QGraphicsItem так, чтобы они были применены, т.к. в моем коде вроде все корректно, но передаваемые параметры не применяются для управления отрисовкой в процедуре paint();
#include <QGraphicsItem> #include <QObject> #include <QWidget> #include <QPainter> // #include "pixelitem.h" //---------------------------------------------------------- // PixelItem::PixelItem(int x, int y, bool bitState) { int x_c = x; int y_c = y; bool BitState = bitState; // QRectF rect = boundingRect(); setFlag(ItemIsMovable); } //---------------------------------------------------------- // PixelItem::~PixelItem() { } //---------------------------------------------------------- // QRectF PixelItem::boundingRect() const { // outer most edges return QRectF(0,0,10,10); } //---------------------------------------------------------- // void PixelItem::paint(QPainter *painter, const QStyleOptionGraphicsItem *option, QWidget *widget) { QPen pen(Qt::black, 1); QBrush br(Qt::SolidPattern); painter->setPen(pen); if(BitState == true) painter->setBrush(br); painter->drawRect(this->x_c, this->y_c, 10, 10); Q_UNUSED(option); Q_UNUSED(widget); } //---------------------------------------------------------- // void PixelItem::mousePressEvent(QGraphicsSceneMouseEvent *event) { //Pressed = true; update(); QGraphicsItem::mousePressEvent(event); } //---------------------------------------------------------- // void PixelItem::mouseReleaseEvent(QGraphicsSceneMouseEvent *event) { //Pressed = false; update(); QGraphicsItem::mouseReleaseEvent(event); } #ifndef PIXELITEM_H #define PIXELITEM_H #include <QObject> #include <QWidget> #include <QPainter> #include <QGraphicsItem> class PixelItem : public QGraphicsItem { public: PixelItem(int x, int y, bool bitState); ~PixelItem(); int x_c = 0; int y_c = 0; bool BitState = false; QRectF boundingRect() const; // overriding paint() void paint(QPainter * painter, const QStyleOptionGraphicsItem * option, QWidget * widget); protected: // overriding mouse events void mousePressEvent(QGraphicsSceneMouseEvent *event); void mouseReleaseEvent(QGraphicsSceneMouseEvent *event); }; #endif // PIXELITEM_H
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Игорь МаксимовOct. 3, 2024, 4:05 a.m.
За что именно отвечают x_c , y_c ?
Тогда лучше не в методе paint их применять, а через метод setPos(x, y)