Duilib实现类似电脑管家扫描目录效果

2023-08-09 09:14:16

实现原理:

1.后台开线程遍历目录，遍历出一个文件路径在界面上更新显示(通过发消息通知主界面)

2.需要扩展一下Duilib控件，在此我扩展了CLabelUI，重写了PaintText函数

扩展控件的.h文件

 /*************************************************************************************************

 *

 * File Name    : UILabelEx.h

 *

 * Created      : 2016/11/11

 *

 * Author       : http://www.cnblogs.com/chechen/

 *

 * Model        :

 *

 * Description  : [[CN]] 扩展Label控件 [[CN]]

 *

 **************************************************************************************************/

 #ifndef _UILABELEX_H_

 #define _UILABELEX_H_

 class CLabelExUI : public CLabelUI

 {

 public:

     CLabelExUI(void);

     ~CLabelExUI(void);

     LPCTSTR GetClass() const;

     LPVOID GetInterface(LPCTSTR pstrName);

     void PaintText(HDC hDC);

     void SetPos(RECT rc);  

 private:

     Color _MakeRGB(int a, Color cl);

     Color _MakeRGB(int r, int g, int b);

 };

 #endif//_UILABELEX_H_

.cpp

 #include "StdAfx.h"

 #include "UILabelEx.h"

 CLabelExUI::CLabelExUI(void)

 {

 }

 CLabelExUI::~CLabelExUI(void)

 {

 }

 LPCTSTR CLabelExUI::GetClass() const

 {

     return TEXT("LabelExUI");

 }

 LPVOID CLabelExUI::GetInterface(LPCTSTR pstrName)

 {

     if( _tcscmp(pstrName, TEXT("LabelEx")) ==  ) return static_cast<CLabelExUI*>(this);

     return CLabelUI::GetInterface(pstrName);

 }

 Color CLabelExUI::_MakeRGB(int a, Color cl)

 {

     return Color(a, cl.GetR(), cl.GetG(), cl.GetB());

 }  

 Color CLabelExUI::_MakeRGB(int r, int g, int b)

 {

     return Color(, r, g, b);

 }  

 void CLabelExUI::SetPos(RECT rc)

 {

     __super::SetPos(rc);

 }  

 void CLabelExUI::PaintText(HDC hDC)

 {

     if( m_dwTextColor ==  ) m_dwTextColor = m_pManager->GetDefaultFontColor();

     if( m_dwDisabledTextColor ==  ) m_dwDisabledTextColor = m_pManager->GetDefaultDisabledColor();  

     RECT rc = m_rcItem;

     rc.left += m_rcTextPadding.left;

     rc.right -= m_rcTextPadding.right;

     rc.top += m_rcTextPadding.top;

     rc.bottom -= m_rcTextPadding.bottom;  

     if(!GetEnabledEffect())

     {

         if( m_sText.IsEmpty() ) return;

         int nLinks = ;

         if( IsEnabled() ) {

             if( m_bShowHtml )

                 CRenderEngine::DrawHtmlText(hDC, m_pManager, rc, m_sText, m_dwTextColor,

                 NULL, NULL, nLinks, DT_SINGLELINE | m_uTextStyle);

             else

             {

                  ASSERT(::GetObjectType(hDC)==OBJ_DC || ::GetObjectType(hDC)==OBJ_MEMDC);

                 ::SetBkMode(hDC, TRANSPARENT);

                 ::SetTextColor(hDC, RGB(GetBValue(m_dwTextColor), GetGValue(m_dwTextColor), GetRValue(m_dwTextColor)));

                 HFONT hOldFont = (HFONT)::SelectObject(hDC, m_pManager->GetFont(m_iFont));

                 SIZE size;

                 ::GetTextExtentPoint32(hDC,m_sText.GetData(),m_sText.GetLength(),&size);

                 UINT uStyle = ;

                 if(size.cx > rc.right - rc.left)

                 {

                     uStyle = DT_PATH_ELLIPSIS|DT_WORD_ELLIPSIS|DT_END_ELLIPSIS;

                 }

                 else

                 {

                     uStyle = DT_CENTER | DT_VCENTER | DT_SINGLELINE;

                 }

                 ::DrawText(hDC, m_sText, -, &rc, uStyle | DT_NOPREFIX);

                 ::SelectObject(hDC, hOldFont);

             }

         }

         else {

             if( m_bShowHtml )

                 CRenderEngine::DrawHtmlText(hDC, m_pManager, rc, m_sText, m_dwDisabledTextColor,

                 NULL, NULL, nLinks, DT_SINGLELINE | m_uTextStyle);

             else  {

                  ASSERT(::GetObjectType(hDC)==OBJ_DC || ::GetObjectType(hDC)==OBJ_MEMDC);

                 ::SetBkMode(hDC, TRANSPARENT);

                 ::SetTextColor(hDC, RGB(GetBValue(m_dwTextColor), GetGValue(m_dwTextColor), GetRValue(m_dwTextColor)));

                 HFONT hOldFont = (HFONT)::SelectObject(hDC, m_pManager->GetFont(m_iFont));

                 SIZE size;

                 ::GetTextExtentPoint32(hDC,m_sText.GetData(),m_sText.GetLength(),&size);

                 UINT uStyle = ;

                 if(size.cx > rc.right - rc.left)

                 {

                     uStyle = DT_PATH_ELLIPSIS|DT_WORD_ELLIPSIS|DT_END_ELLIPSIS;

                 }

                 else

                 {

                     uStyle = DT_CENTER | DT_VCENTER | DT_SINGLELINE;

                 }

                 ::DrawText(hDC, m_sText, -, &rc, uStyle | DT_NOPREFIX);

                 ::SelectObject(hDC, hOldFont);

                 //CRenderEngine::DrawText(hDC, m_pManager, rc, m_sText, m_dwDisabledTextColor,

                 //m_iFont, /* DT_SINGLELINE | */m_uTextStyle); ///< @todo

             }

         }

     }

     else

     {

         Font    nFont(hDC,m_pManager->GetFont(GetFont()));  

         Graphics nGraphics(hDC);

         nGraphics.SetTextRenderingHint(m_TextRenderingHintAntiAlias);  

         StringFormat format;

         format.SetAlignment((StringAlignment)m_hAlign);

         format.SetLineAlignment((StringAlignment)m_vAlign);  

         RectF nRc((float)rc.left,(float)rc.top,(float)rc.right-rc.left,(float)rc.bottom-rc.top);

         RectF nShadowRc = nRc;

         nShadowRc.X += m_ShadowOffset.X;

         nShadowRc.Y += m_ShadowOffset.Y;  

         int nGradientLength = GetGradientLength();  

         if(nGradientLength == )

             nGradientLength = (rc.bottom-rc.top);  

         LinearGradientBrush nLineGrBrushA(Point(GetGradientAngle(), ),Point(,nGradientLength),_MakeRGB(GetTransShadow(),GetTextShadowColorA()),_MakeRGB(GetTransShadow1(),GetTextShadowColorB() == -?GetTextShadowColorA():GetTextShadowColorB()));

         LinearGradientBrush nLineGrBrushB(Point(GetGradientAngle(), ),Point(,nGradientLength),_MakeRGB(GetTransText(),GetTextColor()),_MakeRGB(GetTransText1(),GetTextColor1() == -?GetTextColor():GetTextColor1()));  

         if(GetEnabledStroke() && GetStrokeColor() > )

         {

             LinearGradientBrush nLineGrBrushStroke(Point(GetGradientAngle(),),Point(,rc.bottom-rc.top+),_MakeRGB(GetTransStroke(),GetStrokeColor()),_MakeRGB(GetTransStroke(),GetStrokeColor()));  

 #ifdef _UNICODE

             nRc.Offset(-,);

             nGraphics.DrawString(m_TextValue,m_TextValue.GetLength(),&nFont,nRc,&format,&nLineGrBrushStroke);

             nRc.Offset(,);

             nGraphics.DrawString(m_TextValue,m_TextValue.GetLength(),&nFont,nRc,&format,&nLineGrBrushStroke);

             nRc.Offset(-,-);

             nGraphics.DrawString(m_TextValue,m_TextValue.GetLength(),&nFont,nRc,&format,&nLineGrBrushStroke);

             nRc.Offset(,);

             nGraphics.DrawString(m_TextValue,m_TextValue.GetLength(),&nFont,nRc,&format,&nLineGrBrushStroke);

             nRc.Offset(,-);

 #else

             USES_CONVERSION;

             wstring mTextValue = A2W(m_TextValue.GetData());  

             nRc.Offset(-,);

             nGraphics.DrawString(mTextValue.c_str(),mTextValue.length(),&nFont,nRc,&format,&nLineGrBrushStroke);

             nRc.Offset(,);

             nGraphics.DrawString(mTextValue.c_str(),mTextValue.length(),&nFont,nRc,&format,&nLineGrBrushStroke);

             nRc.Offset(-,-);

             nGraphics.DrawString(mTextValue.c_str(),mTextValue.length(),&nFont,nRc,&format,&nLineGrBrushStroke);

             nRc.Offset(,);

             nGraphics.DrawString(mTextValue.c_str(),mTextValue.length(),&nFont,nRc,&format,&nLineGrBrushStroke);

             nRc.Offset(,-);

 #endif  

         }

 #ifdef _UNICODE

         if(GetEnabledShadow() && (GetTextShadowColorA() >  || GetTextShadowColorB() > ))

             nGraphics.DrawString(m_TextValue,m_TextValue.GetLength(),&nFont,nShadowRc,&format,&nLineGrBrushA);  

         nGraphics.DrawString(m_TextValue,m_TextValue.GetLength(),&nFont,nRc,&format,&nLineGrBrushB);

 #else

         USES_CONVERSION;

         wstring mTextValue = A2W(m_TextValue.GetData());  

         if(GetEnabledShadow() && (GetTextShadowColorA() >  || GetTextShadowColorB() > ))

             nGraphics.DrawString(mTextValue.c_str(),mTextValue.length(),&nFont,nShadowRc,&format,&nLineGrBrushA);  

         nGraphics.DrawString(mTextValue.c_str(),mTextValue.length(),&nFont,nRc,&format,&nLineGrBrushB);

 #endif  

     }

 }

转载:http://blog.csdn.net/chenlycly/article/details/24294639

参考QQ的效果，如下所示：

DT_END_ELLIPSIS：对于显示的字符串，如果结束的字符串的范围不在矩形内，它会被截断并以省略号标识。

DT_WORDBREAK：当一行中的字符将会延伸到由lpRect指定的矩形的边框时，此行自动地在字之间换行。

DT_WORD_ELLIPSIS：截短不符合矩形的正文，并增加省略号。

DT_PATH_ELLIPSIS：对于显示的字符串，会用省略号替换字符串中间的字符，以确保结果能在矩形范围内。如果该字符串包含反斜杠（\）字符，它会尽可能的保留最后一个反斜杠之后的正文。

xml文件:

 <?xml version="1.0" encoding="UTF-8"?>

 <Window size="750,500"  caption="0,0,0,60" sizebox="0,0,0,0" roundcorner="4,4">

   <!-- 窗口的初始尺寸(宽500，高350) 标题栏拖拽区域(高32)、可拖拽边框大小(这里添加sizebox后就可以拖拽边框调整大小了) -->

   <Font name="微软雅黑" size="13"/>

   <Font name="微软雅黑" size="16" />

   <Font name="微软雅黑" size="16" bold="true"/>

   <Font name="微软雅黑" size="13" underline="true"/>

   <Font name="宋体" size="13" />

   <Font name="微软雅黑" size="13" />

   <VerticalLayout bkcolor="#FFCCCCCC" bordersize="2" bordercolor="#FFE5DED8" >

     <!-- 整个窗口的背景色 -->

     <!-- 标题栏区 -->

     <HorizontalLayout name="appbar" height="28"  bkcolor="#FF13A8E0">

       <Control width="100"/>

       <HorizontalLayout name="apptitle" >

         <Label text="DuiLibTraverseFolderDemo        http://www.cnblogs.com/chechen/" align="center" textcolor="#FFF5F6F7"/>

       </HorizontalLayout>

       <Button name="minbtn" padding="4,0,0,0" width="24" height="24" tooltip="最小化" normalimage="file='sysbtn/Min.png'" hotimage="file='sysbtn/Min_hot.png'"/>

       <Button name="maxbtn" padding="4,0,0,0" width="24" height="24" tooltip="最大化" normalimage="file='sysbtn/Max.png'" hotimage="file='sysbtn/Max_hot.png'"/>

       <Button name="restorebtn" padding="4,0,0,0" width="24" height="24" tooltip="还原" visible="false" normalimage="file='sysbtn/Restore.png'" hotimage="file='sysbtn/Restore_hot.png'"/>

       <Button name="closebtn" padding="4,0,0,0" width="24" height="24" tooltip="关闭" normalimage="file='sysbtn/Close.png'" hotimage="file='sysbtn/Close_hot.png'"/>

     </HorizontalLayout>

     <HorizontalLayout bkcolor="#FFFFFFFF">

       <Label  text="正在操作,请稍后..."  align="center" font="2"/>

       <LabelEx name="filepath" text="" float="true" pos="225,255,0,0" width="256"  height="20" font="0" />

     </HorizontalLayout>

   </VerticalLayout>

 </Window>

Demo:Duilib实现类似电脑管家扫描目录效果

码农公寓

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