[MFC] 梳理一个简单的图片处理桌面软件中用到的MFC控件技巧

 1 void CDonutDlg::OnBnClickedButtonRead()
 2 {
 3     BOOL isOpen = TRUE;     //是否打开(否则为保存)  
 4     CString defaultDir = "E:\\FileTest";   //默认打开的文件路径  
 5     CString fileName = "";         //默认打开的文件名  
 6     CString filter = "文件 (*.png; *.jpg; *.bmp)|*.png;*.jpg;*.bmp||";   //文件过虑的类型  
 7     CFileDialog openFileDlg(isOpen, defaultDir, fileName, OFN_HIDEREADONLY | OFN_READONLY, filter, NULL);
 8     openFileDlg.GetOFN().lpstrInitialDir = "E:\\FileTest\\donut.jpg";
 9     INT_PTR result = openFileDlg.DoModal();
10     CString filePath = defaultDir + "\\donut.jpg";
11     if (result == IDOK) {
12         filePath = openFileDlg.GetPathName();
13         LoadPicture(filePath);//加载图片保存在全局变量m_image中
14         UpdatePicture();//显示图片
15     }
16     //CWnd::SetDlgItemTextW(IDC_EDIT_SRC, filePath);
17     // TODO:  在此添加控件通知处理程序代码
18 }

 1 void CDonutDlg::OnBnClickedButtonSave()
 2 {
 3     BOOL isOpen = FALSE;        //是否打开(否则为保存)  
 4     CString defaultDir = "E:\\FileTest";   //默认打开的文件路径  
 5     CString fileName = "donut.jpg";         //默认打开的文件名  
 6     CString filter = "文件 (*.png; *.jpg; *.bmp)|*.png;*.jpg;*.bmp||";   //文件过虑的类型  
 7     CFileDialog openFileDlg(isOpen, defaultDir, fileName, OFN_HIDEREADONLY | OFN_OVERWRITEPROMPT, filter, NULL);
 8     openFileDlg.GetOFN().lpstrInitialDir = "E:\\FileTest\\donut.jpg";
 9     INT_PTR result = openFileDlg.DoModal();
10     CString filePath = defaultDir + "\\" + fileName;
11     if (result == IDOK) {
12         filePath = openFileDlg.GetPathName();
13         SavePicture(filePath);
14     }
15     //CWnd::SetDlgItemTextW(IDC_EDIT_DEST, filePath);
16     // TODO:  在此添加控件通知处理程序代码
17 }

 1 void CDonutDlg::OnNMCustomdrawSliderSmooth(NMHDR *pNMHDR, LRESULT *pResult)
 2 {
 3     LPNMCUSTOMDRAW pNMCD = reinterpret_cast<LPNMCUSTOMDRAW>(pNMHDR);
 4     // TODO:  在此添加控件通知处理程序代码
 5     int nPos = m_SliderSmooth.GetPos(); //获得滑块的当前位置
 6     //另外做一个编辑框 显示所调节的数据；
 7     CString str = ""; m_SliderSmoothValue = 1;//1-31整数
 8     m_SliderSmoothValue = (int)floor(nPos / 6.25) * 2 + 1;
 9     if (m_SliderSmoothValue == 33)m_SliderSmoothValue = 31;
10     str.Format("%2d", m_SliderSmoothValue);
11     SetDlgItemText(IDC_EDIT_SMOOTH, str);
12     *pResult = 0;
13 }

1 void CDonutDlg::OnNMReleasedcaptureSliderSmooth(NMHDR *pNMHDR, LRESULT *pResult)
2 {
3     // TODO:  在此添加控件通知处理程序代码
4     UpdatePicture();
5     *pResult = 0;
6 }

 1 #include "CvvImage.h"
 2 void CDonutDlg::UpdatePicture()
 3 {
 4     double t = 0;
 5     CString str;
 6 
 7     if (fb.setImage(m_SourceImage) == false)//这个一定要
 8     {
 9         return;
10     }
11 
12     //6个参数在全局定义DonutDlg.h中
13     //在DonutDlg的构造函数中初始化
14     //int m_SliderSmoothValue;//1-31整数
15     //double m_SliderEyeSizeValue;//0.8-1
16     //double m_SliderSharpenValue;//0-2
17     //double m_SliderRValue;//0.5-1.5
18     //double m_SliderGValue;//0.5-1.5
19     //double m_SliderBValue;//0.5-1.5
20     t = (double)cvGetTickCount();//用来计算算法执行时间
21 
22     XXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXX;  
23     XXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXX;  
24     XXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXX;
25     m_image = fb.getResult();
26 
27     t = (double)cvGetTickCount() - t;//相减为算法执行的时间
28     str.Format("%lf", t/((double)cvGetTickFrequency()*1000));
29     m_ListBox.InsertString(m_ListBox.GetCount(), "美颜时间...");
30     m_ListBox.InsertString(m_ListBox.GetCount(), str);
31 
32 
33     CDC* pDC = GetDlgItem(IDC_STATIC_PIC)->GetDC();
34     HDC hDC = pDC->GetSafeHdc();
35     IplImage img = m_image;
36     CvvImage cimg;
37     cimg.CopyOf(&img);//上面几步是将Mat转换为CvvImage,但是opencv2无CvvImage需要从网上下载CvvImage源码加入工程
38     CRect rect;
39 
40     CStatic* pStatic = (CStatic*)GetDlgItem(IDC_STATIC_PIC);
41     pStatic->GetClientRect(&rect);
42     pStatic->GetDC()->FillSolidRect(rect.left, rect.top, rect.Width(), rect.Height(), RGB(192, 192, 192));//刷一张背景（否则每次会出现重叠现象）
43 
44 
45     if (BST_UNCHECKED == ((CButton*)GetDlgItem(IDC_CHECK_FILL))->GetCheck())
46     {
47         if ((rect.Height()*1.0 / rect.Width() - m_image.rows*1.0 / m_image.cols)>0)
48         {
49             double new_width = rect.Width();
50             double new_height = rect.Height()*1.0*m_image.rows / m_image.cols;
51             double extern_height = (rect.Height() - new_height) / 2;//为了居中，整个左上角的贴图向下平移的距离
52             rect.SetRect(0, extern_height, new_width, extern_height + new_height);//cols列--高，cows行--宽
53         }
54         else
55         {
56             double new_width = rect.Width()*1.0*m_image.cols / m_image.rows;
57             double new_height = rect.Height();
58             double extern_width = (rect.Width() - new_width) / 2;
59             rect.SetRect(extern_width, 0, new_width + extern_width, new_height);
60         }
61     }
62     cimg.DrawToHDC(hDC, &rect);
63     ReleaseDC(pDC);
64 
65 #ifdef SHOW_IMAGE
66     if (BST_CHECKED == ((CButton*)GetDlgItem(IDC_CHECK_SHOW_CONSOLE))->GetCheck())
67     {
68         do{
69             namedWindow("show the source imag!");
70             imshow("show the source imag!", m_image);
71         } while (0);
72     }
73 #endif
74 }