我要评论本文实例为大家分享了qt实现苹果状态切换按钮的具体代码，供大家参考，具体内容如下
代码如下
#include "button.h"
#include <qdebug>
button::button(qwidget *parent) :
qpushbutton(parent)
{
status = 0;
span_length = 0;
rl_flag = false;
release_flag =true;
timeline = new qtimeline;
connect(timeline,signal(framechanged(int)),this,slot(timeout(int)));
}
void button::paintevent(qpaintevent *e)
{
qpainter painter(this);
painter.setrenderhint(qpainter::antialiasing, true);
qpen pen;
pen.setwidth(2);
pen.setcolor(qcolor(219,219,219));
painter.setpen(pen);
painter.setbrush(qt::green);
painter.drawroundedrect(1,1,this->width()-2,this->height()-2,30,30);
painter.setbrush(qt::white);
painter.setpen(pen);
if(!rl_flag){
switch(status)
{
case 0:painter.drawellipse(1,1,this->height()-3,this->height()-3);break;
case 1:painter.drawroundedrect(1,1,span_length,this->height()-2,30,30);break;
case 2:painter.drawellipse(this->width()+3-this->height(),1,this->height()-3,this->height()-3);rl_flag=true;status=0;break;
}
}else{
switch(status)
{
case 0:painter.drawellipse(this->width()+3-this->height(),1,this->height()-3,this->height()-3);break;
case 1:painter.drawroundedrect(this->width()-1-span_length,1,span_length,this->height()-2,30,30);break;
case 2:painter.drawellipse(1,1,this->height()-3,this->height()-3);rl_flag=false;status=0;break;
}
}
}
void button::drawspan(qpainter painter,int s)
{
}
void button::mousepressevent(qmouseevent *e)
{
timeline->setduration(400);
span_length = 0;
status=1;
if(!rl_flag){
int r1 = this->height()-3;
int r2 = (this->width()/4*3)>r1?(this->width()/4*3):r1;
timeline->setframerange(r1,r2);
}else{
int r1 = this->height()-3;
int r2 = (this->width()/4*3)>r1?(this->width()/4*3):r1;//(this->width()/4*1)>r1?(this->width()/4*1):r1;
timeline->setframerange(r1,r2);
}
timeline->start();
}
void button::mousemoveevent(qmouseevent *e)
{
}
void button::mousereleaseevent(qmouseevent *e)
{
timeline->stop();
status = 2;
update();
}
void button::timeout(int x)
{
status = 1;
span_length = x;
update();
}
以上就是本文的全部内容，希望对大家的学习有所帮助，也希望大家多多支持移动技术网。
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