82 lines
1.7 KiB
C++
82 lines
1.7 KiB
C++
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#include "VideoFrameDisplay.h"
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#include <QPainter>
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VideoFrameDisplay::VideoFrameDisplay(QWidget *parent) :
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QWidget(parent)
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{
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m_nRotateDegree=0;
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this->setMouseTracking(true);
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}
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VideoFrameDisplay::~VideoFrameDisplay()
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{
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}
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void VideoFrameDisplay::Set_Rotate(int Rotate)
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{
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m_nRotateDegree=Rotate;
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}
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void VideoFrameDisplay::paintEvent(QPaintEvent *event)
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{
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QPainter painter(this);
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painter.setRenderHint(QPainter::Antialiasing);
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painter.setRenderHint(QPainter::TextAntialiasing);
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painter.setRenderHint(QPainter::SmoothPixmapTransform);
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//painter.setRenderHint(QPainter::HighQualityAntialiasing);
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//painter.setBrush(Qt::black);
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//painter.drawRect(0,0,this->width(),this->height()); //先画成黑色
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if (mImage.size().width() <= 0) return;
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//将图像按比例缩放成和窗口一样大小
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QImage img = mImage.scaled(this->size(), Qt::KeepAspectRatio, Qt::SmoothTransformation);
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//画面旋转
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if(m_nRotateDegree > 0)
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{
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QTransform matrix;
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matrix.rotate(m_nRotateDegree);
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img = img.transformed(matrix, Qt::SmoothTransformation);
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}
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int x = this->width() - img.width();
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int y = this->height() - img.height();
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x /= 2;
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y /= 2;
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painter.drawImage(QPoint(x,y),img); //画出图像
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}
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void VideoFrameDisplay::slotSetOneFrame(QImage img)
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{
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// Bmp2Png(img);
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src_mImage =mImage = img;
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//mImage.save("d:/1.png");
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update(); //调用update将执行 paintEvent函数
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}
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/*
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功能: 获取原图数据
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*/
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QImage VideoFrameDisplay::GetImage()
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{
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return src_mImage.copy();
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}
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/*
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功能: 鼠标双击事件
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*/
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//void VideoFrameDisplay::mouseDoubleClickEvent(QMouseEvent *e)
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//{
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// emit s_VideoWidgetEvent(1);
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//}
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