[SOLVED]How to draw a filled rectangle on QGraphicsScene using QPainter
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Isn't there something like scene->addFilledRect(......)
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You can add a QGraphicsRectItem to the scene .
something like
@#include <QtGui>
int main(int argc,char ** argv)
{
QApplication app(argc,argv);QGraphicsScene scene;
QGraphicsView view(&scene);
QGraphicsRectItem* item1 = new QGraphicsRectItem(0,0,100,100);
QGraphicsRectItem* item2 = new QGraphicsRectItem(0,100,100,100);
QGraphicsRectItem* item3 = new QGraphicsRectItem(100,0,100,100);
QGraphicsRectItem* item4 = new QGraphicsRectItem(100,100,100,100);item1->setBrush(QBrush(Qt::red));
item2->setBrush(QBrush(Qt::green));
item3->setBrush(QBrush(Qt::blue));
item4->setBrush(QBrush(Qt::yellow));scene.addItem(item1);
scene.addItem(item2);
scene.addItem(item3);
scene.addItem(item4);view.setFixedSize(250,250);
view.setWindowTitle("QGraphicsRectItem Color Example");
view.show();return app.exec();
}@
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Thanks a lot! such a good piece of code!
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Is it possible to draw the above rectangles with gradient effects like, light in middle and dark at top and bottom, to give a 3D effect.
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Yes for the gradients you can check "QLinearGradient Class":http://doc.qt.nokia.com/4.7-snapshot/qlineargradient.html#details
for eg
@QLinearGradient grad1(0, 20, 0, 110);
grad1.setColorAt(0.1, Qt::red);
grad1.setColorAt(0.5, Qt::yellow);
grad1.setColorAt(0.9, Qt::red);QLinearGradient grad2(0, 20, 0, 110);
grad2.setColorAt(0.1, Qt::green);
grad2.setColorAt(0.5, Qt::white);
grad2.setColorAt(0.9, Qt::green);QLinearGradient grad3(0, 20, 0, 110);
grad3.setColorAt(0.1, Qt::blue);
grad3.setColorAt(0.5, Qt::white);
grad3.setColorAt(0.9, Qt::blue);QLinearGradient grad4(0, 20, 0, 110);
grad4.setColorAt(0.1, Qt::yellow);
grad4.setColorAt(0.5, Qt::red);
grad4.setColorAt(0.9, Qt::yellow);item1->setBrush(grad1);
item2->setBrush(grad2);
item3->setBrush(grad3);
item4->setBrush(grad4);@Which displays as
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Thanks for your reply!
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Glad to be of some help. You are welcome :)
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good work sam....!
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