TnbFlatnessDrawer.h

[詳解]

#pragma once
#include "TnbDrawable.h"
 
 
 
//TNB Library
namespace TNB 
{
 
 
 
class CFlatnessDrawer : public CNullDrawer
{
    DEFSUPER(CNullDrawer);
    COLORREF    m_color1;   
    COLORREF    m_color2;   
    COLORREF    m_back;     
    COLORREF    m_base;     
    COLORREF    m_work;     
public:
 
    CFlatnessDrawer(COLORREF color1, COLORREF color2, COLORREF back = CLR_AUTOSELECT, COLORREF base = CLR_AUTOSELECT, COLORREF work = RGB(255, 255, 255))
        : m_color1(color1), m_color2(color2), m_back(back), m_base(base), m_work(work)
    {
    }
 
    virtual IDrawable* Clone(void) const
    {
        return new CFlatnessDrawer(m_color1, m_color2, m_back, m_base, m_work);
    }
 
    virtual void Draw(HDC dc, int x = 0, int y = 0) const
    {
        COLORREF base = m_base;
        COLORREF back = m_back;
        if ( base == CLR_AUTOSELECT )
        {
            base = ::GetPixel(dc, x, y + m_size.cy - 1);
        }
        if ( ! IS_RGBVALUE(back) )
        {
            back = base;
        }
        const DWORD CP_ROP = 0xE20746;
        HBITMAP hBmp = ::CreateBitmap(m_size.cx, m_size.cy, 1, 1, NULL);
        HDC maskDC = ::CreateCompatibleDC(dc);
        HGDIOBJ oldBmp = ::SelectObject(maskDC, hBmp);
        {
            COLORREF oldColor = ::SetBkColor(dc, base);
            ::BitBlt(maskDC, 0, 0, m_size.cx, m_size.cy, dc, x, y, SRCCOPY);
            ::SetBkColor(dc, m_work);
            ::BitBlt(maskDC, 0, 0, m_size.cx, m_size.cy, dc, x, y, NOTSRCERASE);
            //
            RECT rc = { x, y, x + m_size.cx, y + m_size.cy };
            HBRUSH hr = ::CreateSolidBrush(back);
            ::FillRect(dc, &rc, hr);
            _DeleteObject(hr);
            //
            HBRUSH brush1 = ::CreateSolidBrush(m_color1);
            HGDIOBJ oldBrush = ::SelectObject(dc, brush1);
            ::BitBlt(dc, x, y, m_size.cx, m_size.cy, maskDC, 0, 0, CP_ROP);
            ::SelectObject(dc, oldBrush);
            _DeleteObject(brush1);
            if ( m_color2 != CLR_INVALID )
            {
                HBRUSH brush2 = ::CreateSolidBrush(m_color2);
                HGDIOBJ oldBrush = ::SelectObject(dc, brush2);
                ::BitBlt(dc, x - 1, y - 1, m_size.cx, m_size.cy, maskDC, 0, 0, CP_ROP);
                ::SelectObject(dc, oldBrush);
                _DeleteObject(brush2);
            }
            ::SetBkColor(dc, oldColor);
        }
        ::SelectObject(maskDC, oldBmp);
        _DeleteObject(maskDC);
        _DeleteObject(hBmp);
    }
 
    static CFlatnessDrawer* CreateSelectedType(COLORREF base = CLR_AUTOSELECT, COLORREF work = RGB(255, 255, 255))
    {
        return new CFlatnessDrawer(::GetSysColor(COLOR_HIGHLIGHTTEXT), CLR_INVALID, ::GetSysColor(COLOR_HIGHLIGHT), base, work);
    }
 
    static CFlatnessDrawer* CreateNaSelectedType(COLORREF base = CLR_AUTOSELECT, COLORREF work = RGB(255, 255, 255))
    {
        return new CFlatnessDrawer(::GetSysColor(COLOR_WINDOWTEXT), CLR_INVALID, ::GetSysColor(COLOR_BTNFACE), base, work);
    }
};
 
 
 
};  // TNB