Duilib实现GroupBox控件

转载:http://blog.csdn.net/asd313346541/article/details/47055113

原作者的源码上说：右边线和下边线显示不出来：

后来经过调试研究测试猜测应该是没有给控件设置borderround属性，后来设置后出来效果：

最后放上源码(稍微做了修改)：

.h文件

#ifndef _UIGROUPBOX_H_
#define _UIGROUPBOX_H_

#define  GROUPBOX_TEXT_OFFSET        40        //定义GroupBox中的Text相对于左边的偏移

class CGroupBoxUI :public CContainerUI
{
public:
    CGroupBoxUI();

    ~CGroupBoxUI();

    virtual LPCTSTR GetClass() const;

    virtual LPVOID GetInterface(LPCTSTR pstrName);

    virtual void SetAttribute(LPCTSTR pstrName, LPCTSTR pstrValue);

    void PaintText(HDC hDC);

    void PaintBorder(HDC hDC);

    void SetTextColor(DWORD dwTextColor);

    void SetFont(int iFont);

    void SetShowHtml(bool bShowHtml);

private:
    DWORD    m_dwTextColor;        ///字休颜色
    int        m_iFont;            ///字体号，大小
    bool    m_bShowHtml;        ///是否显示HTML代码
    int        m_iTextWidth;        ///Text文字宽
    int        m_iTextHeigh;        ///Text文字高
};

#endif//_UIGROUPBOX_H_

.cpp文件

#include "stdafx.h"
#include "UIGroupBox.h"

CGroupBoxUI::CGroupBoxUI() :m_iFont(-1), m_bShowHtml(false)
{

}


CGroupBoxUI::~CGroupBoxUI()
{
}

///    @return LPCTSTR 返回控件类名
///    @note    本函数返回控件类，格式为LPCTSTR
LPCTSTR CGroupBoxUI::GetClass() const
{
    return TEXT("GroupBoxUI");
}


/// @return LPVOID类型
///    @note 获取接口
LPVOID CGroupBoxUI::GetInterface(LPCTSTR pstrName)
{
    if (_tcscmp(pstrName, TEXT("GroupBox")) == 0)
    {
        return static_cast<CGroupBoxUI*>(this);
    }
    
    return CContainerUI::GetInterface(pstrName);
}


///    设置控件属性
/// @param pstrname        欲设置的属性名称，LPCTSTR类型
/// @param pstrValue    欲设置的属性值，LPCTSTR类型
/// @see                CControlUI::SetAttribute()
/// @note                重载基类，增加部分基类没有的属性
void CGroupBoxUI::SetAttribute(LPCTSTR pstrName, LPCTSTR pstrValue)
{
    if (_tcscmp(pstrName, _T("font")) == 0) SetFont(_ttoi(pstrValue));
    else if (_tcscmp(pstrName, _T("textcolor")) == 0) 
    {
        if (*pstrValue == _T('#')) pstrValue = ::CharNext(pstrValue);
        LPTSTR pstr = NULL;
        DWORD clrColor = _tcstoul(pstrValue, &pstr, 16);
        SetTextColor(clrColor);
    }
    else if (_tcscmp(pstrName, _T("showhtml")) == 0) 
        SetShowHtml(_tcscmp(pstrValue, _T("true")) == 0);

    else CControlUI::SetAttribute(pstrName, pstrValue);
}

/// 设置控件文字颜色
/// @param    dwTextColor        欲设置的文字颜色
/// @note    设置文字颜色，并立即刷新
void CGroupBoxUI::SetTextColor(DWORD dwTextColor)
{
    m_dwTextColor = dwTextColor;
    Invalidate();
}


/// 设置控件字体
/// @param    iFont        欲设置的字体号
/// @note    设置字体，并立即刷新
void CGroupBoxUI::SetFont(int iFont)
{
    m_iFont = iFont;
    Invalidate();
}


void CGroupBoxUI::SetShowHtml(bool bShowHtml)
{
    if (m_bShowHtml == bShowHtml) return;

    m_bShowHtml = bShowHtml;
    Invalidate();
}


/// 关键部分
void CGroupBoxUI::PaintText(HDC hDC)
{
    //如果没有设置字体颜色，则用默认设置
    if (m_dwTextColor == 0)
    {
        m_dwTextColor = m_pManager->GetDefaultFontColor();
    }


    RECT rc;        //文字输出位置
    rc = GetPos();

    rc.left = rc.left + m_cxyBorderRound.cx + GROUPBOX_TEXT_OFFSET;    //这个地方采用了硬编码的方式，不知道怎么计算文字应该放的位置
        
    HFONT hOldFont = (HFONT)::SelectObject(hDC, m_pManager->GetFont(m_iFont));
    Gdiplus::Graphics graphics(hDC);
    Gdiplus::Font font(hDC);
    graphics.SetTextRenderingHint(Gdiplus::TextRenderingHintSystemDefault);
    graphics.SetSmoothingMode(Gdiplus::SmoothingModeHighQuality);
    graphics.SetInterpolationMode(Gdiplus::InterpolationModeHighQualityBicubic);
    Gdiplus::RectF rectF((Gdiplus::REAL)rc.left, (Gdiplus::REAL)rc.top, (Gdiplus::REAL)(rc.right - rc.left), (Gdiplus::REAL)(rc.bottom - rc.top));
    Gdiplus::SolidBrush brush(Gdiplus::Color(254, GetBValue(m_dwTextColor), GetGValue(m_dwTextColor), GetRValue(m_dwTextColor)));

    Gdiplus::StringFormat stringFormat = Gdiplus::StringFormat::GenericTypographic();
    Gdiplus::RectF bounds;
    graphics.MeasureString(m_sText, -1, &font, rectF, &stringFormat, &bounds);
    
    // MeasureString存在计算误差，这里加一像素
    rc.bottom = rc.top + (long)bounds.Height + 1;        //这两句是从UIRender.cpp中DrawText()中拷出来的，不知道意义何在
    rc.right = rc.left + (long)bounds.Width + 1;
    
    m_iTextWidth = (int)bounds.Width;
    m_iTextHeigh = (int)bounds.Height;
    
    graphics.DrawString(m_sText, -1, &font, rectF, &stringFormat, &brush);

    ::SelectObject(hDC, hOldFont);
}


void CGroupBoxUI::PaintBorder(HDC hDC)
{
    RECT rc = GetPos();        //画框框时的位置

    rc.top += (m_iTextHeigh * 1) / 2;        //最顶部的线移到Text的中下部

    int nSize = m_nBorderSize;
    //DWORD dwPenColor = m_dwBorderColor;
    Gdiplus::Graphics graphics(hDC);

    //消除锯齿
    graphics.SetSmoothingMode(SmoothingModeHighQuality);   
    //const Gdiplus::Pen pen(Gdiplus::Color::Red, 1.0f);

    DWORD dwPenColor = GetAdjustColor(m_dwBorderColor);
    ASSERT(::GetObjectType(hDC) == OBJ_DC || ::GetObjectType(hDC) == OBJ_MEMDC);
    HPEN hPen = ::CreatePen(PS_SOLID | PS_INSIDEFRAME, nSize, RGB(GetBValue(dwPenColor), GetGValue(dwPenColor), GetRValue(dwPenColor)));
    HPEN hOldPen = (HPEN)::SelectObject(hDC, hPen);
    ::SelectObject(hDC, ::GetStockObject(HOLLOW_BRUSH));

    //定位四个圆角的位置
    RECT rcTopLeftCorner = { rc.left, rc.top, rc.left + 2 * m_cxyBorderRound.cx, rc.top + 2 * m_cxyBorderRound.cy };
    RECT rcTopRightCorner = { rc.right - 2 * m_cxyBorderRound.cx, rc.top, rc.right, rc.top + 2 * m_cxyBorderRound.cy };
    RECT rcBottomLeftCorner = { rc.left, rc.bottom - 2 * m_cxyBorderRound.cy, rc.left + 2 * m_cxyBorderRound.cx, rc.bottom };
    RECT rcBottomRightCorner = { rc.right - 2 * m_cxyBorderRound.cx, rc.bottom - 2 * m_cxyBorderRound.cy, rc.right, rc.bottom };

    //画四个圆角
    const Gdiplus::Pen pen(Gdiplus::Color(GetBValue(dwPenColor), GetGValue(dwPenColor), GetRValue(dwPenColor)), (float)m_nBorderSize);
    graphics.DrawArc(&pen, rcTopLeftCorner.left, rcTopLeftCorner.top, rcTopLeftCorner.right - rcTopLeftCorner.left, rcTopLeftCorner.bottom - rcTopLeftCorner.top, 180.0f, 90.0f);//左上角
    graphics.DrawArc(&pen, rcTopRightCorner.left, rcTopRightCorner.top, rcTopRightCorner.right - rcTopRightCorner.left, rcTopRightCorner.bottom - rcTopRightCorner.top, 270.0f,90.0f);//右上角
    graphics.DrawArc(&pen, rcBottomLeftCorner.left, rcBottomLeftCorner.top, rcBottomLeftCorner.right - rcBottomLeftCorner.left, rcBottomLeftCorner.bottom - rcBottomLeftCorner.top, 90.0f, 90.0f);//左下角
    graphics.DrawArc(&pen, rcBottomRightCorner.left, rcBottomRightCorner.top, rcBottomRightCorner.right - rcBottomRightCorner.left-1, rcBottomRightCorner.bottom - rcBottomRightCorner.top-1, 0.0f, 90.0f);//右下角


    //画线----GDI
    MoveToEx(hDC, rc.left, rc.top + m_cxyBorderRound.cy, NULL);            //左边线
    LineTo(hDC, rc.left, rc.bottom - m_cxyBorderRound.cy);

    MoveToEx(hDC, rc.left + m_cxyBorderRound.cx, rc.top, NULL);            //上第一条线
    LineTo(hDC, rc.left + m_cxyBorderRound.cx + GROUPBOX_TEXT_OFFSET - 5, rc.top);        //-5 是为了给Text增加左边间距

    MoveToEx(hDC, rc.left + m_cxyBorderRound.cx + GROUPBOX_TEXT_OFFSET + m_iTextWidth + 5, rc.top, NULL);        //上第二条线，+5是为了给Text增加右边间距
    LineTo(hDC, rc.right - m_cxyBorderRound.cx, rc.top);

    MoveToEx(hDC, rc.right, rc.top + m_cxyBorderRound.cy, NULL);        //右边线
    LineTo(hDC, rc.right, rc.bottom - m_cxyBorderRound.cy);

    MoveToEx(hDC, rc.left + m_cxyBorderRound.cx, rc.bottom, NULL);     //下边线
    LineTo(hDC, rc.right - m_cxyBorderRound.cx, rc.bottom);


    ::SelectObject(hDC, hOldPen);
    ::DeleteObject(hPen);    
}

xml布局:

<GroupBox text="测试"  textcolor="#FF989898"  float="true" pos="125,55,0,0" width="256" height="80" bordercolor="#FF989898" bordersize="1"  borderround="4,4" font="1"/>

在窗口中自定义控件：

CControlUI* CFrameWnd::CreateControl(LPCTSTR pstrClass)
{
    if (_tcscmp(pstrClass,_T("GroupBox")) == 0)
    {
        return new CGroupBoxUI;
    }
    return NULL;
}

源码demo:GroupBox控件