// GradientStatic.cpp : ±¸Çö ÆÄÀÏÀÔ´Ï´Ù.
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//
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#include "stdafx.h"
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#include "GradientStatic.h"
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// CGradientStatic
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IMPLEMENT_DYNAMIC(CGradientStatic, CStatic)
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CGradientStatic::CGradientStatic()
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{
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m_bVertical = FALSE;
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m_iLeftSpacing = 10;
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clLeft = GetSysColor(COLOR_ACTIVECAPTION);
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clRight = GetSysColor(COLOR_BTNFACE);
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clText = GetSysColor(COLOR_CAPTIONTEXT);
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m_iAlign = 0;
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hinst_msimg32 = LoadLibrary( _T("msimg32.dll") );
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m_bCanDoGradientFill = FALSE;
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if(hinst_msimg32)
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{
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m_bCanDoGradientFill = TRUE;
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dllfunc_GradientFill = ((LPFNDLLFUNC1) GetProcAddress( hinst_msimg32, "GradientFill" ));
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}
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m_sTEXT = _T("");
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}
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CGradientStatic::~CGradientStatic()
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{
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FreeLibrary( hinst_msimg32 );
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}
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BEGIN_MESSAGE_MAP(CGradientStatic, CStatic)
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ON_WM_PAINT()
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END_MESSAGE_MAP()
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// CGradientStatic ¸Þ½ÃÁö 󸮱âÀÔ´Ï´Ù
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//this function will be used only if msimg32.dll library is not available
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void CGradientStatic::DrawGradRect(CDC *pDC, CRect r, COLORREF cLeft, COLORREF cRight, BOOL a_bVertical)
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{
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CRect stepR; // rectangle for color's band
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COLORREF color; // color for the bands
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float fStep;
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if(a_bVertical)
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fStep = ((float)r.Height())/255.0f;
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else
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fStep = ((float)r.Width())/255.0f; // width of color's band
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for (int iOnBand = 0; iOnBand < 255; iOnBand++)
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{
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// set current band
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if(a_bVertical)
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{
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SetRect(&stepR,
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r.left,
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r.top+(int)(iOnBand * fStep),
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r.right,
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r.top+(int)((iOnBand+1)* fStep));
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}
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else
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{
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SetRect(&stepR,
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r.left+(int)(iOnBand * fStep),
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r.top,
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r.left+(int)((iOnBand+1)* fStep),
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r.bottom);
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}
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// set current color
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color = RGB((GetRValue(cRight)-GetRValue(cLeft))*((float)iOnBand)/255.0f+GetRValue(cLeft),
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(GetGValue(cRight)-GetGValue(cLeft))*((float)iOnBand)/255.0f+GetGValue(cLeft),
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(GetBValue(cRight)-GetBValue(cLeft))*((float)iOnBand)/255.0f+GetBValue(cLeft));
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// fill current band
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pDC->FillSolidRect(stepR,color);
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}
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}
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void CGradientStatic::OnPaint()
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{
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CPaintDC dc(this); // device context for painting
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CRect rect;
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GetClientRect(&rect);
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if(m_bCanDoGradientFill) //msimg32.dll library is loaded
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{
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TRIVERTEX rcVertex[2];
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rcVertex[0].x=rect.left;
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rcVertex[0].y=rect.top;
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rcVertex[0].Red=GetRValue(clLeft)<<8; // color values from 0x0000 to 0xff00 !!!!
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rcVertex[0].Green=GetGValue(clLeft)<<8;
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rcVertex[0].Blue=GetBValue(clLeft)<<8;
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rcVertex[0].Alpha=0x0000;
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rcVertex[1].x=rect.right;
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rcVertex[1].y=rect.bottom;
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rcVertex[1].Red=GetRValue(clRight)<<8;
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rcVertex[1].Green=GetGValue(clRight)<<8;
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rcVertex[1].Blue=GetBValue(clRight)<<8;
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rcVertex[1].Alpha=0;
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GRADIENT_RECT rect;
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rect.UpperLeft=0;
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rect.LowerRight=1;
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// fill the area
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dllfunc_GradientFill( dc,rcVertex,2,&rect,1, m_bVertical ? GRADIENT_FILL_RECT_V : GRADIENT_FILL_RECT_H);
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}
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else
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{
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//msimg32.dll is not available. Let's use our own code to display gradient background.
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//This code is very simple and produces worse gradient that function from the library - but works!
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DrawGradRect(&dc,rect,clLeft,clRight,m_bVertical);
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}
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//let's set color defined by user
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::SetTextColor(dc,clText);
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HFONT hfontOld;
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CFont font;
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VERIFY(font.CreateFont(
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20, // nHeight
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0, // nWidth
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0, // nEscapement
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0, // nOrientation
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FW_BLACK, // nWeight
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FALSE, // bItalic
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FALSE, // bUnderline
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0, // cStrikeOut
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ANSI_CHARSET, // nCharSet
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OUT_DEFAULT_PRECIS, // nOutPrecision
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CLIP_DEFAULT_PRECIS, // nClipPrecision
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DEFAULT_QUALITY, // nQuality
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DEFAULT_PITCH | FF_SWISS, // nPitchAndFamily
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_T("MS Sans Serif"))); // lpszFacename
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hfontOld = (HFONT)SelectObject(dc.m_hDC, font.m_hObject);
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::SetBkMode(dc, TRANSPARENT);
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GetClientRect(&rect);
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if(m_iAlign == 1) // center
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::DrawText(dc, m_sTEXT, -1, &rect, DT_SINGLELINE|DT_VCENTER|DT_CENTER);
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else if(m_iAlign == 0) // left
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{
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rect.left+=m_iLeftSpacing;
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::DrawText(dc, m_sTEXT, -1, &rect, DT_SINGLELINE|DT_VCENTER|DT_LEFT);
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}
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else //right
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{
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rect.right-=m_iLeftSpacing;
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::DrawText(dc, m_sTEXT, -1, &rect, DT_SINGLELINE|DT_VCENTER|DT_RIGHT);
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}
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::SelectObject(dc.m_hDC, hfontOld);
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}
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void CGradientStatic::SetReverseGradient()
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{
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COLORREF cTemp = clLeft;
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clLeft = clRight;
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clRight = cTemp;
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}
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void CGradientStatic::SetWindowText(LPCTSTR a_lpstr)
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{
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// CStatic::SetWindowText(a_lpstr);
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m_sTEXT = a_lpstr;
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Invalidate(TRUE);
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}
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