window截图

Qt实现对选中区域屏幕截图和窗⼝图像保存

//.cpp

#include"paintscreenshot.h"

#include

#include

#include

#include

#include"screenshot.h"

PaintScreenshot::PaintScreenshot(QWidget*parent)

:QWidget(p百二秦关 arent)

,m_bIsMouPress(fal)

{

initWindow();

loadBackgroundPixmap();

}

PaintScreenshot::~PaintScreenshot()

{

}

voidPaintScreenshot::initWindow()

{

this->tMouTracking(true);

this->tWindowFlags(Qt::FramelessWindowHint);

tWindowState(Qt::WindowActive|Qt::WindowFullScreen);

}

voidPaintScreenshot::loadBackgroundPixmap()

{

m_loadPixmap=QPixmap::grabWindow(QApplication::desktop()->winId());//衣服海报 抓取当前屏幕的图⽚;

m_n幼儿安全教育教案 Screenwidth=m_();

m_nScreenhei正处级干部 ght=m_();

}

voidPaintScreenshot::mouPressEvent(QMouEvent*event)

{

if(event->button()==Qt::LeftButton)

{

m_bIsMouPress=true;

m_beginPoint=event->pos();

}

returnQWidget::mouPressEvent(event);

}

voidPaintScreenshot::mouMoveEvent(QMouEvent*event)

{

if(m_bIsMouPress)

{

m_endPoint=event->pos();

update();

}

returnQWidget::mouMoveEvent(event);

}

voidPaintScreenshot::mouReleaEvent(QMouEvent*event)

{

m_endPoint=event->pos();

m_bIsMouPress=fal;

if(nullptr!=m_pScreenshotWindow)

{

m_pScreenshotWindow->SendImageSaveAndShow(m_capturePixmap);

}

clo();

returnQWidget::mouReleaEvent(event);

}

voidPaintScreenshot::paintEvent(QPaintEvent*event)

{

m_(this);//进⾏重绘;

QColormShadowColor=QColor(0,0,0,100);//阴影颜⾊设置;

m_(QPen(Qt::blue,1,Qt::SolidLine,Qt::FlatCap));//设置画笔;

m_xmap(0,0,m_loadPixmap);//将背景图⽚画到窗体上;

m_ct(m_(),mShadowColor);//画影罩效果;

if(m_bIsMouPress)

{

QRectmSe产后能吃阿胶吗 lectedRect=getRect(m_beginPoint,m_endPoint);

m_capturePixmap=m_(mSelectedRect);

m_xmap(t(),m_capturePixmap);

m_ct(mSelectedRect);

}

m_();//重绘结束;

returnQWidget::paintEvent(event);

}

voidPaintScreenshot::keyPressEvent(QKeyEvent*event)

{

////Esc键退出截图;

//if(event->key()==Qt::Key_Escape)

//{

//clo();

//}

//Eeter键完成截图;

//if(event->key()==Qt::Key_Return||event->key()==Qt::Key_Enter)

//{

//emitsignalCompleteCature(m_capturePixmap);

//clo();

//}

returnQWidget::keyPressEvent(event);

}

QRectPaintScreenshot::getRect(constQPoint&beginPoint,constQPoint&endPoint)

{

intx,y,nWidth,nHeight;

nWidth=qAbs(beginPoint.x()-endPoint.x());

nHeight=qAbs(beginPoint.y()-e嘎达汤 ndPoint.y());

x=beginPoint.x()

y=beginPoint.y()

QRectmSelectedRect=QRect(x,y,nWidth,nHeight);

//避免宽或⾼为零时拷贝截图有误;

//可以看QQ截图，当选取截图宽或⾼为零时默认为2;

if(()==0)

{

th(1);

}

if(()==0)

{

ght(1);

}

returnmSelectedRect;

}

voidPaintScreenshot::SendScreenshotWindowPoint(Sc腹泻草 reenshot*mScreenshotWindowPoint)

{

if(nullptr!=mScreenshotWindowPoint)

{

m_pScreenshotWindow=mScreenshotWindowPoint;

}

}

//.h

#ifndefPAINTSCREENSHOT_H

#definePAINTSCREENSHOT_H

#include

#include

#include

classScreenshot;

classPaintScreenshot:publicQWidget

{

public:

PaintScreenshot(QWidget*parent=0);

~PaintScreenshot();

voidSendScreenshotWindowPoint(Screenshot*);

private:

voidinitWindow();

voidloadBackgroundPixmap();

QRectgetRect(constQPoint&mBeginPoint,constQPoint&mEndPoint);

voidmouPressEvent(QMouEven数学童话故事 t*event);

voidmouMoveEvent(QMouEvent*event);

voidmouReleaEvent(QMouEvent*event);

voidkeyPressEvent(QKeyEvent*event);

voidpaintEvent(QPaintEvent*event);

private:

boolm_bIsMouPress;

QPixmapm_loadPixmap,m_capturePixmap;

intm_nScreenwidth;

intm_nScreenheight;

QPointm_beginPoint,m_endPoint;

QPainterm_painter;

Screenshot*m_pScreenshotWindow;//接收截图窗⼝的指针地址

};

#endif//PAINTSCREENSHOT_H