#include "Widget.h"
Widget::Widget(QWidget *parent)
: QWidget(parent)
{
m_testBtn.setParent(this);
m_testBtn.setText("test");
m_testBtn.move(400,300);
m_testBtn.resize(70,30);
resize(500,250);
connect(&m_testBtn,SIGNAL(clicked()),this,SLOT(onTestBtnClicked()));
}
Widget::~Widget()
{
}
void Widget::onTestBtnClicked()
{
DrawParam dp =
{
qrand() % 3,
static_cast<Qt::PenStyle>(qrand() % 5 + 1),
QPoint(qrand() % 400,qrand() % 300),
QPoint(qrand() % 400,qrand() % 300)
};
if(m_list.count() == 5)
{
m_list.clear();
}
m_list.append(dp);
update();
}
void Widget::paintEvent(QPaintEvent *)
{
QPainter painter;
painter.begin(this);
for(int i = 0;i < m_list.count();i++)
{
int x = (m_list[i].begin.x() < m_list[i].end.x()) ?m_list[i].begin.x() :m_list[i].end.x() ;
int y = (m_list[i].begin.y() < m_list[i].end.y()) ?m_list[i].begin.y() :m_list[i].end.y() ;
int w = qAbs(m_list[i].begin.x() - m_list[i].end.x()) + 1;
int h = qAbs(m_list[i].begin.y() - m_list[i].end.y()) + 1;
painter.setPen(m_list[i].pen);
switch(m_list[i].type)
{
case LINE:
painter.drawLine(m_list[i].begin,m_list[i].end);
break;
case RECT:
painter.drawRect(x,y,w,h);
break;
case ELLIPSE:
painter.drawEllipse(x,y,w,h);
break;
default:
break;
}
}
painter.end();
}
