DuiLib::CLabelUI 的继承类_duilib lableui

需求 :  要弹出一个文本提示对话框，替代 ::MessageBox

思路 :  用DuiDesigner画一个对话框，带上一张背景图, 放上按钮和Label, Label上显示文本信息.

效果:  发现文本不能换行, 只能显示一行.

纠正 :

  去DuiLib中看到，实际最后画文本的时候，都加了单行类型, 就是说, 最后只能以单行方式画文本.

  去网上看了下，cppblog的一个人，直接在CLabelUI中改了人家代码. 虽然简单，但是这库，别人就没法用了.

  我做了最小化修改, 从CLabelUI继承了一个类CLabelUIEx，重载 PaintText,

  这样，我自己用时, 从CLabelUIEx继承控件.

  别人用时, 还从CLabelUI继承, 和原来的库一样效果.

  因为 CDialogBuilder 负责创建控件, 修改了CDialogBuilder， 使其生成新的控件类型 LabelEx.

  最后能换行了, 但是只能从给定矩形的左上角开始, 就不修改了.

  修改后的类，用于显示一些活动的文本。比较固定的文本，用图片直接显示.

  毕竟由专业美工作出的图，比自己写的字，效果要好的多.

 如果是固定的字符串比较多，需要加很多图片的话，也可以考虑用此类显示提示信息.

  权衡显示效果和程序的体积.

 

  只修改了DuiLib.

  DuiDesigner没改, 在编辑xml时，将LabelEx改成Label, 修改完后, 再改回来, 打成skin.zip包.

 

  本来不该改界面库的, 被迫的.

 

///
//END消息映射宏定义
 
 
//BEGIN控件名称宏定义//
///
 
#define  DUI_CTR_EDIT                            (_T("Edit"))
#define  DUI_CTR_LIST                            (_T("List"))
#define  DUI_CTR_TEXT                            (_T("Text"))
 
#define  DUI_CTR_COMBO                           (_T("Combo"))
#define  DUI_CTR_LABEL                           (_T("Label"))
#define  DUI_CTR_LABEL_EX                        (_T("LabelEx")) ///< @todo
#define  DUI_CTR_FLASH							(_T("Flash"))

CControlUI* CDialogBuilder::_Parse(CMarkupNode* pRoot, CControlUI* pParent, CPaintManagerUI* pManager)
{
    IContainerUI* pContainer = NULL;
    CControlUI* pReturn = NULL;

...

            case 6:
                if( _tcscmp(pstrClass, DUI_CTR_BUTTON) == 0 )                 pControl = new CButtonUI;
                else if( _tcscmp(pstrClass, DUI_CTR_OPTION) == 0 )            pControl = new COptionUI;
                else if( _tcscmp(pstrClass, DUI_CTR_SLIDER) == 0 )            pControl = new CSliderUI;
                break;
            case 7:
                if( _tcscmp(pstrClass, DUI_CTR_CONTROL) == 0 )                pControl = new CControlUI;
                else if( _tcscmp(pstrClass, DUI_CTR_ACTIVEX) == 0 )           pControl = new CActiveXUI;
                else if (0 == _tcscmp(pstrClass, DUI_CTR_LABEL_EX)) ///< @todo
                {
                    pControl = new CLabelUIEx;
                }
                break;
            case 8:

/// @file       UILabelEx.h
/// @brief      支持自动换行的LabelUI, 
/// 修改了 DuiLib::CLabelUI::PaintText 为虚函数, LabelUIEx继承自CLabelUI
/// 重载了 virtual void PaintText(HDC hDC);
 
#ifndef __UI_LABEL_EX_H__
#define __UI_LABEL_EX_H__
 
namespace DuiLib
{
    class UILIB_API CLabelUIEx :
        public DuiLib::CLabelUI
    {
    public:
        CLabelUIEx(void);
        virtual ~CLabelUIEx(void);
 
        virtual void PaintText(HDC hDC);
        virtual void SetPos(RECT rc);
 
    private:
        Color _MakeRGB(int a, Color cl);
        Color _MakeRGB(int r, int g, int b);
    };
}
 
#endif

#include "StdAfx.h"
#include "UILabelEx.h"
 
namespace DuiLib
{
 
    CLabelUIEx::CLabelUIEx(void)
    {
    }
 
 
    CLabelUIEx::~CLabelUIEx(void)
    {
    }
 
    Color CLabelUIEx::_MakeRGB(int a, Color cl)
    {
        return Color(a, cl.GetR(), cl.GetG(), cl.GetB());
    }
 
    Color CLabelUIEx::_MakeRGB(int r, int g, int b)
    {
        return Color(255, r, g, b);
    }
 
    void CLabelUIEx::SetPos(RECT rc)
    {
        __super::SetPos(rc);
    }
 
    void CLabelUIEx::PaintText(HDC hDC)
    {
        UINT uStyle = GetTextStyle();
        if( m_dwTextColor == 0 ) m_dwTextColor = m_pManager->GetDefaultFontColor();
        if( m_dwDisabledTextColor == 0 ) 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 = 0;
            if( IsEnabled() ) {
                if( m_bShowHtml )
                    CRenderEngine::DrawHtmlText(hDC, m_pManager, rc, m_sText, m_dwTextColor, \
                    NULL, NULL, nLinks, DT_SINGLELINE | m_uTextStyle);
                else
                    CRenderEngine::DrawText(hDC, m_pManager, rc, m_sText, m_dwTextColor, \
                    m_iFont, /* DT_SINGLELINE | */m_uTextStyle); ///< @todo
            }
            else {
                if( m_bShowHtml )
                    CRenderEngine::DrawHtmlText(hDC, m_pManager, rc, m_sText, m_dwDisabledTextColor, \
                    NULL, NULL, nLinks, DT_SINGLELINE | m_uTextStyle);
                else
                    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 == 0)
                nGradientLength = (rc.bottom-rc.top);
 
            LinearGradientBrush nLineGrBrushA(Point(GetGradientAngle(), 0),Point(0,nGradientLength),_MakeRGB(GetTransShadow(),GetTextShadowColorA()),_MakeRGB(GetTransShadow1(),GetTextShadowColorB() == -1?GetTextShadowColorA():GetTextShadowColorB()));
            LinearGradientBrush nLineGrBrushB(Point(GetGradientAngle(), 0),Point(0,nGradientLength),_MakeRGB(GetTransText(),GetTextColor()),_MakeRGB(GetTransText1(),GetTextColor1() == -1?GetTextColor():GetTextColor1()));
 
            if(GetEnabledStroke() && GetStrokeColor() > 0)
            {
                LinearGradientBrush nLineGrBrushStroke(Point(GetGradientAngle(),0),Point(0,rc.bottom-rc.top+2),_MakeRGB(GetTransStroke(),GetStrokeColor()),_MakeRGB(GetTransStroke(),GetStrokeColor()));
 
#ifdef _UNICODE
                nRc.Offset(-1,0);
                nGraphics.DrawString(m_TextValue,m_TextValue.GetLength(),&nFont,nRc,&format,&nLineGrBrushStroke);
                nRc.Offset(2,0);
                nGraphics.DrawString(m_TextValue,m_TextValue.GetLength(),&nFont,nRc,&format,&nLineGrBrushStroke);
                nRc.Offset(-1,-1);
                nGraphics.DrawString(m_TextValue,m_TextValue.GetLength(),&nFont,nRc,&format,&nLineGrBrushStroke);
                nRc.Offset(0,2);
                nGraphics.DrawString(m_TextValue,m_TextValue.GetLength(),&nFont,nRc,&format,&nLineGrBrushStroke);
                nRc.Offset(0,-1);
#else
                USES_CONVERSION;
                wstring mTextValue = A2W(m_TextValue.GetData());
 
                nRc.Offset(-1,0);
                nGraphics.DrawString(mTextValue.c_str(),mTextValue.length(),&nFont,nRc,&format,&nLineGrBrushStroke);
                nRc.Offset(2,0);
                nGraphics.DrawString(mTextValue.c_str(),mTextValue.length(),&nFont,nRc,&format,&nLineGrBrushStroke);
                nRc.Offset(-1,-1);
                nGraphics.DrawString(mTextValue.c_str(),mTextValue.length(),&nFont,nRc,&format,&nLineGrBrushStroke);
                nRc.Offset(0,2);
                nGraphics.DrawString(mTextValue.c_str(),mTextValue.length(),&nFont,nRc,&format,&nLineGrBrushStroke);
                nRc.Offset(0,-1);
#endif
 
            }
#ifdef _UNICODE
            if(GetEnabledShadow() && (GetTextShadowColorA() > 0 || GetTextShadowColorB() > 0))
                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() > 0 || GetTextShadowColorB() > 0))
                nGraphics.DrawString(mTextValue.c_str(),mTextValue.length(),&nFont,nShadowRc,&format,&nLineGrBrushA);
 
            nGraphics.DrawString(mTextValue.c_str(),mTextValue.length(),&nFont,nRc,&format,&nLineGrBrushB);
#endif
 
        }
    }
}

调用示例

void CTextMsgDlg::UiInit()
{
    UINT    uStyle = 0;
    m_pLabelMsg = static_cast<CLabelUIEx *>(m_PaintManager.FindControl(ELEMENT_TEXT_DLG_LABEL_MSG));
    if (NULL != m_pLabelMsg)
    {
        m_pLabelMsg->SetText(m_strMsg.c_str());
        uStyle = m_pLabelMsg->GetTextStyle();
        uStyle |= DT_WORDBREAK;
        uStyle &= (~DT_CENTER);
        m_pLabelMsg->SetTextStyle(uStyle /*DT_CENTER | DT_VCENTER | DT_WORDBREAK | DT_WORD_ELLIPSIS */);
    }
}

2017-0121

yiluanlie9944@csdn问起有没有这个类的实现工程,我上传的Demo中应该都有吧.
找了一个已经上传的Demo, 里面有这个类的实现.
http://download.csdn.net/download/lostspeed/9042237
<<srcbk_2015_0824_1711_prj_dlg_show_list_ui_use_massive_amounts_of_data.zip>>


PS: 找资料的方法, 如果人家在这篇文章之后,写的同系列的Demo, 很有可能有这篇文章的内容.
先下载作者在这篇文章之后的Demo翻翻,看看有没有这篇文章描述的内容:)