DuiLib::CLabelUI 的继承类

来源：互联网发布：sql with cte as 编辑：程序博客网时间：2024/04/26 10:42

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        {            FontnFont(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:)

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