BOOL CXXXDlg::ShowMat(Mat image)
{
if (image.empty()) return FALSE;
CRect rect;
int width, height;
BITMAPINFO bitmapInfo;
BITMAPINFOHEADER* bmiHeader;
width = image.cols;
height = image.rows;
if (width % 4)
width = (width + 3) / 4 * 4;
cv::Size winSize(width, height);
cv::Mat cvImgTmp(winSize, CV_8UC3);
if (image.size() != winSize)
cv::resize(image, cvImgTmp, winSize);
else
cvImgTmp = image.clone();
if (cvImgTmp.channels()==1)
cvtColor(cvImgTmp, cvImgTmp, CV_GRAY2BGR);
GetDlgItem(IDC_STATIC_SHOW_MODE)->GetClientRect(&rect);
bmiHeader = &bitmapInfo.bmiHeader;
bmiHeader->biSize = sizeof(BITMAPINFOHEADER);
bmiHeader->biWidth = cvImgTmp.cols;
bmiHeader->biHeight = -cvImgTmp.rows;
bmiHeader->biPlanes = 1;
bmiHeader->biBitCount = 24;
bmiHeader->biCompression = BI_RGB;
bitmapInfo.bmiHeader.biSizeImage = 0;
bmiHeader->biXPelsPerMeter = GetSystemMetrics(SM_CXSCREEN);
bmiHeader->biYPelsPerMeter = GetSystemMetrics(SM_CYSCREEN);
bmiHeader->biClrUsed = 0;
bmiHeader->biClrImportant = 0;
/*使图片在控件中居中全部显示*/
int nWindowW = rect.Width(); //获取窗口宽度
int nWindowH = rect.Height(); //获取窗口高度
int nImageW = cvImgTmp.cols; //获取图片宽度
int nImageH = cvImgTmp.rows; //获取图片高度
float fRatioW = (float)nWindowW / nImageW;
float fRatioH = (float)nWindowH / nImageH;
int nBeginW , nBeginH, nWeight, nHeight;
if (fRatioW < fRatioH)
{
nBeginW = 0;
nBeginH = (int)(nWindowH - (nImageH*fRatioW)) / 2;
nWeight = nWindowW;
nHeight = (int)(nImageH * fRatioW);
}
else
{
nBeginW = (int)(nWindowW - (nImageW*fRatioH)) / 2;
nBeginH = 0;
nWeight = (int)(nImageW * fRatioH);
nHeight = nWindowH;
}
GetDlgItem(IDC_STATIC_SHOW_MODE)->GetDC()->FillSolidRect(0, 0, nWindowW, nWindowH, COLORREF(0));
GetDlgItem(IDC_STATIC_SHOW_MODE)->GetDC()->SetStretchBltMode(COLORONCOLOR);
StretchDIBits(GetDlgItem(IDC_STATIC_SHOW_MODE)->GetDC()->GetSafeHdc()
, nBeginW, nBeginH, nWeight, nHeight
, 0, 0, nImageW, nImageH,
cvImgTmp.data, &bitmapInfo, DIB_RGB_COLORS, SRCCOPY);
return TRUE;
}
