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C++ GetBValue函数代码示例

原作者: [db:作者] 来自: [db:来源] 收藏 邀请

本文整理汇总了C++中GetBValue函数的典型用法代码示例。如果您正苦于以下问题:C++ GetBValue函数的具体用法?C++ GetBValue怎么用?C++ GetBValue使用的例子?那么恭喜您, 这里精选的函数代码示例或许可以为您提供帮助。



在下文中一共展示了GetBValue函数的20个代码示例,这些例子默认根据受欢迎程度排序。您可以为喜欢或者感觉有用的代码点赞,您的评价将有助于我们的系统推荐出更棒的C++代码示例。

示例1: main

int main(int argc, char** argv)
{
	std::cout<<"*    ___  ____ _  _ _  _ "<<std::endl;
	std::cout<<"*    |__] |    |\\ |  \\/  "<<std::endl;
	std::cout<<"*    |    |___ | \\| _/\\_  "<<std::endl;
	std::cout<<"-----------------------------"<<std::endl;	
	std::cout<<"leetlights v0.1"<<std::endl;

	CROCCAT_Talk roccat;
	roccat.RestoreLEDRGB();
	const int bins = 15;
	int nScreenWidth = GetSystemMetrics(SM_CXSCREEN);
	int nScreenHeight = GetSystemMetrics(SM_CYSCREEN);
	const int miniScreenY = nScreenHeight/10;
	const int miniScreenX = nScreenWidth/10;
	
	HWND hDesktopWnd = GetDesktopWindow();
	HDC hDesktopDC = GetDC(hDesktopWnd);
	HDC hCaptureDC = CreateCompatibleDC(hDesktopDC);
	HBITMAP hCaptureBitmap =CreateCompatibleBitmap(hDesktopDC, miniScreenX, miniScreenY);
	SelectObject(hCaptureDC,hCaptureBitmap); 
	SetStretchBltMode(hCaptureDC,HALFTONE);
	int histogram[bins+1][bins+1][bins+1];
		COLORREF* pixel = new COLORREF [ miniScreenX * miniScreenY ];
	
		int lR=0;
		int lG=0;
		int lB=0;
	DWORD start = GetTickCount();
	DWORD diff;
	DWORD lastTime = start+1;
	DWORD time;
	while(true)
	{
		time = GetTickCount();
		diff= start-time ;
		lastTime = time ;
		if(!StretchBlt(hCaptureDC,0,0,miniScreenX,miniScreenY,hDesktopDC,0,0,nScreenWidth,nScreenHeight,SRCCOPY))
		{
			std::cout<<"Capturing failed, skipping iteration"<<std::endl;
			Sleep(100);
			continue;
		}

		BITMAPINFO MyBMInfo = {0};


		BITMAPINFO bmpInfo;
		bmpInfo.bmiHeader.biSize = sizeof(BITMAPINFOHEADER);
		bmpInfo.bmiHeader.biWidth = miniScreenX;
		bmpInfo.bmiHeader.biHeight = miniScreenY;
		bmpInfo.bmiHeader.biPlanes = 1;
		bmpInfo.bmiHeader.biBitCount = 32;
		bmpInfo.bmiHeader.biCompression = BI_RGB;        
		bmpInfo.bmiHeader.biSizeImage = 0;        
		bmpInfo.bmiHeader.biClrUsed = 0;    
		bmpInfo.bmiHeader.biClrImportant = 0;

		if(0 == GetDIBits(hCaptureDC, hCaptureBitmap, 0,(UINT)miniScreenY, pixel,  (BITMAPINFO *)&bmpInfo, DIB_RGB_COLORS))
		{
			std::cout<<"Receiving Data failed, skipping interation"<<std::endl;
			Sleep(100);
			continue;
		}

		int r,g,b;
		int rB,gB,bB;
		int max1 =0;
		int maxR1=0;
		int maxG1=0;
		int maxB1=0;
		int max2 =0;
		int maxR2=0;
		int maxG2=0;
		int maxB2=0;
		int max3 =0;
		int maxR3=0;
		int maxG3=0;
		int maxB3=0;
		int max4 =0;
		int maxR4=0;
		int maxG4=0;
		int maxB4=0;
		int lastColorIntensity =0;

		memset(histogram,0,sizeof(histogram[0][0][0])*bins*bins*bins);

		for (int i=0; i<miniScreenX*miniScreenY; i++)
		{

			r =GetBValue(pixel[i]);
			g =GetGValue(pixel[i]);
			b =GetRValue(pixel[i]);
			
			rB = (int)(r/255.f*(bins));
			gB = (int)(g/255.f*(bins));
			bB = (int)(b/255.f*(bins));
	
			histogram[rB][gB][bB] ++;
			if(histogram[rB][gB][bB] >=max4)
//.........这里部分代码省略.........
开发者ID:newyork167,项目名称:leetlights,代码行数:101,代码来源:main.cpp


示例2: ShowMessage

//上传图片
void CDlgCustomFace::OnBnClickedUpload()
{
	if ( m_Image.IsNull() )
	{
		ShowMessage(TEXT("请选择图片!"));
		return ;
	}

	//设置状态
	m_enOperateStatus = enOperateStatus_Upload;

	//链接网络
	if ( ConnectServer() == false )
	{
		//设置状态
		m_enOperateStatus = enOperateStatus_NULL;
		return;
	}

	//获取DC
	CDC *pDC = GetDC();

	LONG lBmpSize = LARGE_FACE_HEIGHT * (LARGE_FACE_WIDTH*3+LARGE_FACE_WIDTH%4) ;
	BYTE *pByteBmpData = (BYTE *)VirtualAlloc(NULL,lBmpSize, MEM_RESERVE | MEM_COMMIT, PAGE_READWRITE);

	//构造位图
	BITMAPFILEHEADER bfh;
	BITMAPINFOHEADER bih;

	bfh.bfOffBits=sizeof(BITMAPFILEHEADER)+sizeof(BITMAPINFOHEADER);
	bfh.bfReserved1=0;
	bfh.bfReserved2=0;
	bfh.bfType = 0x4D42;
	bfh.bfSize=lBmpSize+sizeof(BITMAPFILEHEADER)+sizeof(BITMAPINFOHEADER) ;

	bih.biBitCount=24;
	bih.biClrImportant=0;
	bih.biClrUsed=0;
	bih.biCompression=BI_RGB;
	bih.biHeight=LARGE_FACE_HEIGHT;
	bih.biPlanes=1;
	bih.biSize=sizeof(bih);
	bih.biSizeImage=0;
	bih.biWidth=LARGE_FACE_WIDTH;
	bih.biXPelsPerMeter=0;
	bih.biYPelsPerMeter=0;	

	//设置像素
	WORD wWidth = (LARGE_FACE_WIDTH*3+LARGE_FACE_WIDTH%4);
	for ( int nCol = 0, nRealCol = LARGE_FACE_HEIGHT-1; nCol < LARGE_FACE_HEIGHT; ++nCol, --nRealCol )
		for ( WORD wRow = 0, wByteIdex = 0; wRow < LARGE_FACE_WIDTH; wRow++, wByteIdex+=3)
		{
			COLORREF clr = pDC->GetPixel(LARGE_FRAME_LEFT+wRow, LARGE_FRAME_TOP+nCol);
			pByteBmpData[nRealCol*wWidth+wByteIdex] = GetBValue(clr);
			pByteBmpData[nRealCol*wWidth+wByteIdex+1] = GetGValue(clr);
			pByteBmpData[nRealCol*wWidth+wByteIdex+2] = GetRValue(clr);
		}

	//创建目录
	CString strDirName = CString(g_GlobalUnits.GetWorkDirectory()) + TEXT("\\CustomFace");
	CreateDirectory(strDirName, NULL) ;
	CString strFileName;
	strFileName = TEXT("\\MyFace.bmp");

	//写入文件
	CFile fileMyFace;
	try
	{
		if ( fileMyFace.Open(strDirName + strFileName, CFile::modeCreate|CFile::modeWrite|CFile::typeBinary) )
		{
			//写入位图
			fileMyFace.Write(&bfh, sizeof(bfh));
			fileMyFace.Write(&bih, sizeof(bih));
			fileMyFace.Write(pByteBmpData, lBmpSize);

			//关闭文件
			fileMyFace.Close();
		}

		//压缩文件
		CZip oZip( strDirName + strFileName );
		oZip.SwapSize( strDirName+TEXT("\\MyFace.zip") );
	}
	catch(...){}			

	//释放资源
	ReleaseDC(pDC);
	VirtualFree(pByteBmpData, lBmpSize , MEM_DECOMMIT) ;

	//更新控件
	UpdateControls();
}
开发者ID:vsanth,项目名称:kkj,代码行数:93,代码来源:DlgCustomFace.cpp


示例3: Log_CreateRtfHeader

char* Log_CreateRtfHeader(MODULEINFO *mi)
{
	int i;

	// guesstimate amount of memory for the RTF header
	size_t bufferEnd = 0, bufferAlloced = 4096;
	char *buffer = (char *)mir_realloc(mi->pszHeader, bufferAlloced);
	buffer[0] = '\0';

	// get the number of pixels per logical inch
	HDC hdc = GetDC(NULL);
	chatApi.logPixelSY = GetDeviceCaps(hdc, LOGPIXELSY);
	chatApi.logPixelSX = GetDeviceCaps(hdc, LOGPIXELSX);
	ReleaseDC(NULL, hdc);

	// ### RTF HEADER

	// font table
	Log_Append(buffer, bufferEnd, bufferAlloced, "{\\rtf1\\ansi\\deff0{\\fonttbl");
	for (i = 0; i < OPTIONS_FONTCOUNT; i++)
		Log_Append(buffer, bufferEnd, bufferAlloced, "{\\f%u\\fnil\\fcharset%u%S;}", i, chatApi.aFonts[i].lf.lfCharSet, chatApi.aFonts[i].lf.lfFaceName);

	// colour table
	Log_Append(buffer, bufferEnd, bufferAlloced, "}{\\colortbl ;");

	for (i = 0; i < OPTIONS_FONTCOUNT; i++)
		Log_Append(buffer, bufferEnd, bufferAlloced, "\\red%u\\green%u\\blue%u;", GetRValue(chatApi.aFonts[i].color), GetGValue(chatApi.aFonts[i].color), GetBValue(chatApi.aFonts[i].color));

	for (i = 0; i < mi->nColorCount; i++)
		Log_Append(buffer, bufferEnd, bufferAlloced, "\\red%u\\green%u\\blue%u;", GetRValue(mi->crColors[i]), GetGValue(mi->crColors[i]), GetBValue(mi->crColors[i]));

	// new paragraph
	Log_Append(buffer, bufferEnd, bufferAlloced, "}\\pard");

	// set tabs and indents
	int iIndent = 0;

	if (g_Settings->dwIconFlags) {
		iIndent += (14 * 1440) / chatApi.logPixelSX;
		Log_Append(buffer, bufferEnd, bufferAlloced, "\\tx%u", iIndent);
	}
	if (g_Settings->bShowTime) {
		int iSize = (g_Settings->LogTextIndent * 1440) / chatApi.logPixelSX;
		Log_Append(buffer, bufferEnd, bufferAlloced, "\\tx%u", iIndent + iSize);
		if (g_Settings->bLogIndentEnabled)
			iIndent += iSize;
	}

	Log_Append(buffer, bufferEnd, bufferAlloced, "\\fi-%u\\li%u", iIndent, iIndent);
	return buffer;
}
开发者ID:Seldom,项目名称:miranda-ng,代码行数:51,代码来源:chat_log.cpp


示例4: Assert

//-----------------------------------------------------------------------------
// Purpose: 
// Input  : *pDC - 
//			bounds - 
//-----------------------------------------------------------------------------
void Box3D::RenderTool2D(CRender2D *pRender)
{
	Vector mins = bmins;
	Vector maxs = bmaxs;
	CMapView2D *pView = (CMapView2D*)pRender->GetView();

	Assert( pRender );

	if ( IsTranslating() )
	{
		TranslateBox( mins, maxs );
	}
	else if ( IsEmpty() )
	{
		return;
	}


	if ( m_dwDrawFlags & boundstext)
	{
		DrawBoundsText(pRender, mins, maxs, DBT_TOP | DBT_LEFT);
	}

	if ( IsTranslating() )
	{
	    pRender->PushRenderMode( RENDER_MODE_DOTTED );
		pRender->SetDrawColor( GetRValue(Options.colors.clrToolDrag), GetGValue(Options.colors.clrToolDrag), GetBValue(Options.colors.clrToolDrag) );
	}
	else if (!(m_dwDrawFlags & thicklines))
	{
		pRender->PushRenderMode( RENDER_MODE_DOTTED );
		pRender->SetDrawColor( GetRValue(m_clrBox), GetGValue(m_clrBox), GetBValue(m_clrBox) );
	}
	else
	{
		pRender->PushRenderMode( RENDER_MODE_FLAT_NOZ );
		pRender->SetDrawColor( GetRValue(m_clrBox), GetGValue(m_clrBox), GetBValue(m_clrBox) );
	}

	// render bounds
	if ( !IsTranslating() || m_TranslateMode == modeScale || m_TranslateMode == modeMove )
	{
		// draw simple rectangle
		pRender->DrawRectangle( mins, maxs, false, 0 );
	}
	else
	{
		// during rotation or shearing, draw transformed bounding box

		Vector v[4];
		
		// init all points to center
		v[0] = v[1] = v[2] = v[3] = (bmins+bmaxs) / 2;

		int axis = pView->axHorz;

		v[0][axis] = v[1][axis] = bmins[axis];
		v[2][axis] = v[3][axis] = bmaxs[axis];

		axis = pView->axVert;

		v[1][axis] = v[2][axis] = bmins[axis];
		v[0][axis] = v[3][axis] = bmaxs[axis];

		for ( int i=0; i<4; i++)
		{
			TranslatePoint( v[i] );
		}
		
		pRender->DrawLine( v[0], v[1] );
		pRender->DrawLine( v[1], v[2] );
		pRender->DrawLine( v[2], v[3] );
		pRender->DrawLine( v[3], v[0] );
	}

	pRender->PopRenderMode();

	// draw a cross for translation origin in move or rotation mode
	if ( IsTranslating() )
	{
		if ( m_TranslateMode == modeMove || m_TranslateMode == modeRotate )
		{
			Vector vec = m_vTranslationFixPoint;

			if ( m_TranslateMode == modeMove  )
 			{
				TranslatePoint( vec );
			}

			// draw 'X'
			pRender->SetHandleStyle( 7, CRender::HANDLE_CROSS );
			pRender->SetHandleColor( GetRValue(Options.colors.clrToolDrag), GetGValue(Options.colors.clrToolDrag), GetBValue(Options.colors.clrToolDrag) );
			pRender->DrawHandle( vec );
			
		}
//.........这里部分代码省略.........
开发者ID:DeadZoneLuna,项目名称:SourceEngine2007,代码行数:101,代码来源:box3d.cpp


示例5: GetNumTokens

void CPolyDlg::OnEnterKey( UINT ctlID )
{
	CString csMsg, csEditstr, csItemNum, newitmstr ;
	int itemnum ;
	CComboBox& combo = m_Combo_Corner ; //convenience

	//Get editbox string
	CWnd* pWnd = (combo.GetWindow(GW_CHILD)) ;
	CWnd* pEditWnd = (pWnd->GetNextWindow()); //pointer to editbox window
	pEditWnd->GetWindowText( csEditstr );
	csEditstr.TrimLeft() ; csEditstr.TrimRight() ;

	int numtokens = GetNumTokens( csEditstr ) ;
	int numitems = combo.GetCount() ;

	//check for too few or too many tokens in the entry string
	if( numtokens < 2 )
	{
		csMsg = "Each entry must have at least X & Y positions " ;
		AfxMessageBox( csMsg + "\n" + csEditstr ) ;
		return ;
	}

	else if( numtokens > 7 )
	{
		csMsg = "Each line can have no more than seven items" ;
		AfxMessageBox( csMsg + "\n" + csEditstr ) ;
		return ;
	}

	//OK, 2 or 3 tokens: get valid X/Y pos
	Vector3D vcrnr = GetCnrVector( csEditstr ) ;

	//3 tokens are considered to be [X Position] [Y Position] [Z Position]
	if( numtokens == 3 )
	{
		//prepend item num & add to end
		itemnum = numitems + 1 ;
		FormatNumStr( csItemNum, itemnum ) ;
		newitmstr.Format( m_csCoordFmtStr, vcrnr.x, vcrnr.y, vcrnr.z, 0, 0, 0 ) ;
		csEditstr = csItemNum + newitmstr ;
		combo.AddString( csEditstr ) ;
		itemnum = GetItemNum( csEditstr ) ;
	}

	// 6 tokens are assumed to be [X Position] [Y Position] [Z Position] [R] [G] [B]
	else if( numtokens == 6 )
	{
		COLORREF col = GetCnrColor( csEditstr ) ;
		int R = GetRValue( col ) ;
		int G = GetGValue( col ) ;
		int B = GetBValue( col ) ;

		//prepend item num & add to end
		itemnum = numitems + 1 ;
		FormatNumStr( csItemNum, itemnum ) ;
		newitmstr.Format( m_csCoordFmtStr, vcrnr.x, vcrnr.y, vcrnr.z, R, G, B ) ;
		csEditstr = csItemNum + newitmstr ;
		combo.AddString( csEditstr ) ;
		itemnum = GetItemNum( csEditstr ) ;
	}

	//otherwise we assume  [Item #] [X Position] [Y Position] [Z Position] [R] [G] [B]
	else
	{
		itemnum = GetItemNum( csEditstr ) ;
		COLORREF col = GetCnrColor( csEditstr ) ;
		int R = GetRValue( col ) ;
		int G = GetGValue( col ) ;
		int B = GetBValue( col ) ;

		//insert at item number or add to end
		if( itemnum > numitems )
		{
			//prepend correct item num & add to end
			itemnum = numitems + 1 ;
			FormatNumStr( csItemNum, itemnum ) ;
			newitmstr.Format( m_csCoordFmtStr, vcrnr.x, vcrnr.y, vcrnr.z, R, G, B ) ;
			csEditstr = csItemNum + newitmstr ;
			combo.AddString( csEditstr ) ;

		}
		else if( itemnum < numitems )
		{
			combo.DeleteString( itemnum - 1 ) ;
			FormatNumStr( csItemNum, itemnum ) ;
			newitmstr.Format( m_csCoordFmtStr, vcrnr.x, vcrnr.y, vcrnr.z, R, G, B ) ;
			csEditstr = csItemNum + newitmstr ;
			combo.InsertString( itemnum - 1, csEditstr ) ;
		}
		else //itemnum points to last string
		{
			combo.DeleteString( itemnum - 1 ) ;
			FormatNumStr( csItemNum, itemnum ) ;
			newitmstr.Format( m_csCoordFmtStr, vcrnr.x, vcrnr.y, vcrnr.z, R, G, B ) ;
			csEditstr = csItemNum + newitmstr ;
			combo.AddString( csEditstr ) ;
		}
	}

//.........这里部分代码省略.........
开发者ID:pvaut,项目名称:Z-Flux,代码行数:101,代码来源:PolyDlg.cpp


示例6: RGBtoHSL

// This function extracts the hue, saturation, and luminance from "color" 
// and places these values in h, s, and l respectively.
void RGBtoHSL(unsigned int color,unsigned int& h, unsigned int& s, unsigned int& l)
{
	unsigned int r = (unsigned int)GetRValue(color);
	unsigned int g = (unsigned int)GetGValue(color);
	unsigned int b = (unsigned int)GetBValue(color);

	float r_percent = ((float)r)/255;
	float g_percent = ((float)g)/255;
	float b_percent = ((float)b)/255;

	float max_color = 0;
	if((r_percent >= g_percent) && (r_percent >= b_percent))
	{
		max_color = r_percent;
	}
	if((g_percent >= r_percent) && (g_percent >= b_percent))
		max_color = g_percent;
	if((b_percent >= r_percent) && (b_percent >= g_percent))
		max_color = b_percent;

	float min_color = 0;
	if((r_percent <= g_percent) && (r_percent <= b_percent))
		min_color = r_percent;
	if((g_percent <= r_percent) && (g_percent <= b_percent))
		min_color = g_percent;
	if((b_percent <= r_percent) && (b_percent <= g_percent))
		min_color = b_percent;

	float L = 0;
	float S = 0;
	float H = 0;

	L = (max_color + min_color)/2;

	if(max_color == min_color)
	{
		S = 0;
		H = 0;
	}
	else
	{
		if(L < .50)
		{
			S = (max_color - min_color)/(max_color + min_color);
		}
		else
		{
			S = (max_color - min_color)/(2 - max_color - min_color);
		}
		if(max_color == r_percent)
		{
			H = (g_percent - b_percent)/(max_color - min_color);
		}
		if(max_color == g_percent)
		{
			H = 2 + (b_percent - r_percent)/(max_color - min_color);
		}
		if(max_color == b_percent)
		{
			H = 4 + (r_percent - g_percent)/(max_color - min_color);
		}
	}
	s = (unsigned int)(S*100);
	l = (unsigned int)(L*100);
	H = H*60;
	if(H < 0)
		H += 360;
	h = (unsigned int)H;
}
开发者ID:AnwarMohamed,项目名称:EmoAnalyzer,代码行数:71,代码来源:HSL2RGB.cpp


示例7: if

void CChangeBackgroudWnd::Notify(TNotifyUI& msg)
{
	if (msg.sType == _T("click"))
	{
		if (msg.pSender == m_pOptSwitch)
		{
			if ( m_pOptSwitch->IsSelected())
			{
				m_pSlider->SetVisible(false);
			}
			else
			{
				m_pSlider->SetVisible(true);
			}
		}
		if (msg.pSender == m_PaintManager.FindControl(_T("bnt_bgimage")))
		{
			m_pTab->SelectItem(0);
		}
		else if (msg.pSender == m_PaintManager.FindControl(_T("btn_color")))
		{
			m_pTab->SelectItem(1);
		}
		else if (_tcsstr(msg.pSender->GetName(), _T("colour_")) != 0)
		{
			CSliderUI* AdjustColorSliderR = static_cast<CSliderUI*>(m_PaintManager.FindControl(kAdjustColorSliderRControlName));
			CSliderUI* AdjustColorSliderG = static_cast<CSliderUI*>(m_PaintManager.FindControl(kAdjustColorSliderGControlName));
			CSliderUI* AdjustColorSliderB = static_cast<CSliderUI*>(m_PaintManager.FindControl(kAdjustColorSliderBControlName));
			if ((AdjustColorSliderR != NULL) && (AdjustColorSliderG != NULL) && (AdjustColorSliderB != NULL))
			{
				DWORD dwColor = msg.pSender->GetBkColor();
				AdjustColorSliderR->SetValue(static_cast<BYTE>(GetRValue(dwColor)));
				AdjustColorSliderG->SetValue(static_cast<BYTE>(GetGValue(dwColor)));
				AdjustColorSliderB->SetValue(static_cast<BYTE>(GetBValue(dwColor)));

				static_cast<CPlayerWnd*>(m_pParent)->SetBkColor(dwColor);
			}
		}
	}
	else if (msg.sType == _T("valuechanged"))
	{
		CSliderUI* AdjustColorSliderR = static_cast<CSliderUI*>(m_PaintManager.FindControl(kAdjustColorSliderRControlName));
		CSliderUI* AdjustColorSliderG = static_cast<CSliderUI*>(m_PaintManager.FindControl(kAdjustColorSliderGControlName));
		CSliderUI* AdjustColorSliderB = static_cast<CSliderUI*>(m_PaintManager.FindControl(kAdjustColorSliderBControlName));
		if ((AdjustColorSliderR != NULL) && (AdjustColorSliderG != NULL) && (AdjustColorSliderB != NULL))
		{
			BYTE red = AdjustColorSliderR->GetValue();
			BYTE green = AdjustColorSliderG->GetValue();
			BYTE blue = AdjustColorSliderB->GetValue();
			COLORREF crColor = RGB(red, green, blue);
			TCHAR szBuf[MAX_PATH] = {0};
#if defined(UNDER_CE)
			_stprintf(szBuf, _T("FF%02X%02X%02X"), GetRValue(crColor), GetGValue(crColor), GetBValue(crColor));
#else
			_stprintf_s(szBuf, MAX_PATH - 1, _T("FF%02X%02X%02X"), GetRValue(crColor), GetGValue(crColor), GetBValue(crColor));
#endif
			LPTSTR pstr = NULL;
			DWORD dwColor = _tcstoul(szBuf, &pstr, 16);
			m_pParent->SetBkColor(dwColor);

		}
	}
}
开发者ID:yuechuanbingzhi163,项目名称:Player,代码行数:63,代码来源:ChangeBgWnd.cpp


示例8: GetPos


//.........这里部分代码省略.........
			clrRange clr;
			clr = colorList[loop];
			
			// Get the good values. If not set, then entire range is good
			int lval = clr.lval;
			int hval = clr.hval;
			if((lval < min) || (lval > max)) lval = min;
			if((hval > max) || (hval < min)) hval = max;

			if(lval == min)
			{
				gotStartColor = TRUE;
				startColor = clr.strColor;
			}
			if(hval == max)
			{
				gotEndColor = TRUE;
				endColor = clr.endColor;
			}

			int minVal = lval - min;	// offset into bitmap for this color
			minVal = int(double(minVal)/scale);

			// width (or height for vertical slider) inside bitmap for this color
			int widthVal = hval - lval;
			widthVal = int((double(widthVal)/scale) + 1.0);			
			
			// For drawing a gradient, we need to know the individual RGB values
			int sR,eR,sG,eG,sB,eB;	// start and end R, G, and B values
			sR = GetRValue(clr.strColor);
			eR = GetRValue(clr.endColor);
			sG = GetGValue(clr.strColor);
			eG = GetGValue(clr.endColor);
			sB = GetBValue(clr.strColor);
			eB = GetBValue(clr.endColor);

			if(GradientFill != NULL)
			{
				TRIVERTEX vert[2];	// for specifying range to gradient fill
				GRADIENT_RECT gRect;

// Warning C4244: conversion from 'int' to 'unsigned short', possible loss of data
#pragma warning (push)
#pragma warning (disable : 4244)
				vert[0].Red   = sR<<8;	// expects 16-bit color values!
				vert[0].Green = sG<<8;
				vert[0].Blue  = sB<<8;
				vert[0].Alpha = 0;		// no fading/transparency
				
				vert[1].Red   = eR<<8;
				vert[1].Green = eG<<8;
				vert[1].Blue  = eB<<8;
				vert[1].Alpha = 0;
#pragma warning (pop)

				gRect.UpperLeft = 0;
				gRect.LowerRight = 1;
				
				BOOL retval;
				if(IsVertical)	// vertically oriented?
				{
					vert[0].x = 0;
					vert[0].y = Offset + minVal;
					vert[1].x = iWidth;
					vert[1].y = Offset + minVal + widthVal;
					retval = GradientFill(memDC,vert,2,&gRect,1,GRADIENT_FILL_RECT_V);
开发者ID:zekoman,项目名称:tibiaauto,代码行数:67,代码来源:SliderCtrlEx.cpp


示例9: memset

// draw the item
bool wxOwnerDrawn::OnDrawItem(
  wxDC&                             rDC
, const wxRect&                     rRect
, wxODAction                        eAction
, wxODStatus                        eStatus
)
{
    //
    // We do nothing on focus change
    //
    if (eAction == wxODFocusChanged )
        return TRUE;

    //
    // Select the font and draw the text
    // ---------------------------------
    //

    CHARBUNDLE                      vCbnd;
    HPS                             hPS= rDC.GetHPS();
    wxColour                        vColBack;
    wxColour                        vColText;
    COLORREF                        vRef;
    RECTL                           vRect = {rRect.x + 4, rRect.y + 1, rRect.x + (rRect.width - 2), rRect.y + rRect.height};

    memset(&vCbnd, 0, sizeof(CHARBUNDLE));

    //
    // Use default font if no font set
    //
    if (m_font.Ok())
    {
        m_font.RealizeResource();
    }
    else
    {
        ::GpiSetCharSet(hPS, LCID_DEFAULT);
    }

    //
    // Based on the status of the menu item, pick the right colors
    //
    if (eStatus & wxODSelected)
    {
        wxColour                        vCol2(wxT("WHITE"));
        vColBack.Set( (unsigned char)0
                     ,(unsigned char)0
                     ,(unsigned char)160
                    ); // no dark blue in color table
        vColText = vCol2;
    }
    else if (eStatus & wxODDisabled)
    {
        vRef = (ULONG)::WinQuerySysColor( HWND_DESKTOP
                                         ,SYSCLR_MENU // Light gray
                                         ,0L
                                        );
        vColBack.Set( GetRValue(vRef)
                     ,GetGValue(vRef)
                     ,GetBValue(vRef)
                    );
        vRef = (ULONG)::WinQuerySysColor( HWND_DESKTOP
                                         ,SYSCLR_MENUDISABLEDTEXT // dark gray
                                         ,0L
                                        );
        vColText.Set( GetRValue(vRef)
                     ,GetGValue(vRef)
                     ,GetBValue(vRef)
                    );
    }
    else
    {
        //
        // Fall back to default colors if none explicitly specified
        //
        vRef = ::WinQuerySysColor( HWND_DESKTOP
                                  ,SYSCLR_MENU  // we are using gray for all our window backgrounds in wxWidgets
                                  ,0L
                                 );
        vColBack.Set( GetRValue(vRef)
                     ,GetGValue(vRef)
                     ,GetBValue(vRef)
                    );
        vRef = ::WinQuerySysColor( HWND_DESKTOP
                                  ,SYSCLR_WINDOWTEXT // Black
                                  ,0L
                                 );
        vColText.Set( GetRValue(vRef)
                     ,GetGValue(vRef)
                     ,GetBValue(vRef)
                    );
    }

    rDC.SetTextBackground(vColBack);
    rDC.SetTextForeground(vColText);
    rDC.SetBackgroundMode(wxTRANSPARENT);
    vCbnd.lColor     = vColText.GetPixel();
    vCbnd.lBackColor = vColBack.GetPixel();
    ::GpiSetAttrs( hPS
//.........这里部分代码省略.........
开发者ID:gitrider,项目名称:wxsj2,代码行数:101,代码来源:ownerdrw.cpp


示例10: GetSysColor

Color RenderThemeWinCE::platformInactiveSelectionBackgroundColor() const
{
    COLORREF color = GetSysColor(COLOR_GRAYTEXT);
    return Color(GetRValue(color), GetGValue(color), GetBValue(color), 255);
}
开发者ID:13W,项目名称:phantomjs,代码行数:5,代码来源:RenderThemeWinCE.cpp


示例11: GetLowColor

// Draw the tiles
//
void CTileCastleFlag::Draw( CDC* pDC, int x, int y, int x2, int x3, int y2, int y3, int y4, int DrawingLevel)
{
	// Compute polyline around tiles
	POINT	Points1[4];
	int		NbPoint1 = 4;
	int		TilePos = 0;

	double LowColor = GetLowColor( DrawingLevel );

	Points1[0].x=x+x2;
	Points1[0].y=y-y2;
	Points1[1].x=x+x3;
	Points1[1].y=y;
	Points1[2].x=(int) (x+x3-x2/4.0);
	Points1[2].y=(int) (y+y2/4.0);
	Points1[3].x=x+x2;
	Points1[3].y=(int) (y-y2/2.0);

	double cosa;
	double sina;
	switch( m_CurrentRotation )
	{
	case 0:
		break;
	case 1:
		cosa = cos(60/180.0*PI);
		sina = sin(60/180.0*PI);
		break;
	case 2:
		cosa = cos(120/180.0*PI);
		sina = sin(120/180.0*PI);
		break;
	case 3:
		cosa = cos(180/180.0*PI);
		sina = sin(180/180.0*PI);
		break;
	case 4:
		cosa = cos(240/180.0*PI);
		sina = sin(240/180.0*PI);
		break;
	case 5:
		cosa = cos(300/180.0*PI);
		sina = sin(300/180.0*PI);
		break;
	}

	if( m_CurrentRotation!=0 )
	{
		for( int i=0; i<NbPoint1; i++ )
		{
			double x1,y1;

			x1 = cosa*(Points1[i].x-x-x2)-sina*(Points1[i].y-y-(y3-y2)/2.0);
			y1 = sina*(Points1[i].x-x-x2)+cosa*(Points1[i].y-y-(y3-y2)/2.0);
			Points1[i].x = (int) (x+x2+x1);
			Points1[i].y = (int) (y+(y3-y2)/2.0+y1);
		}
	}

	CPen Pen;
	Pen.CreatePen(PS_NULL,0,RGB(0,0,0));
	CPen* pOldPen = pDC->SelectObject( &Pen );

	CBrush Brush;
	if( m_IsSelected )
		Brush.CreateSolidBrush( RGB(255,255*LowColor,255*LowColor) );
	else
		Brush.CreateSolidBrush( RGB(min(255,GetRValue(m_TileColor)+(255-GetRValue(m_TileColor))*LowColor),min(255,GetGValue(m_TileColor)+(255-GetGValue(m_TileColor))*LowColor),min(255,GetBValue(m_TileColor)+(255-GetBValue(m_TileColor))*LowColor)) );
	CBrush* pOldBrush = pDC->SelectObject( &Brush );

	pDC->Polygon( Points1, NbPoint1 );

	// Draw points
	CBrush BlackBrush;
	BlackBrush.CreateSolidBrush( RGB(min(255,255*LowColor),min(255,255*LowColor),min(255,255*LowColor)) );
	pDC->SelectObject( &BlackBrush );

	double xe1 = (Points1[3].x+Points1[0].x)*.5;
	double ye1 = (Points1[3].y+Points1[0].y)*.5;
	double xe2 = (Points1[2].x+Points1[1].x)*.5;
	double ye2 = (Points1[2].y+Points1[1].y)*.5;
	int xe3 = (int) ((xe1+xe2)*.5);
	int ye3 = (int) ((ye1+ye2)*.5);
	int diameter = (int) (x2/10.0);

	pDC->Ellipse( xe3-diameter, ye3-diameter, xe3+diameter, ye3+diameter );

	pDC->SelectObject( pOldBrush );
	pDC->SelectObject( pOldPen );

	DrawExtend( pDC, x, y, x2, x3, y2, y3, y4, DrawingLevel);
}
开发者ID:dkniffin,项目名称:virtualscape,代码行数:94,代码来源:TileCastleFlag.cpp


示例12: glEnable

void Renderer::drawCovers(bool showTarget){
#ifdef COVER_ALPHA
	glEnable(GL_BLEND);
	glBlendFunc(GL_SRC_ALPHA, GL_ONE_MINUS_SRC_ALPHA);
	glEnable(GL_ALPHA_TEST);
	glAlphaFunc(GL_GREATER,0.1f);
#endif
	
	if (cfgHighlightWidth == 0)
		showTarget = false;

	if (appInstance->albumCollection->getCount() == 0)
		return;

	float centerOffset = displayPos->getCenteredOffset();
	CollectionPos centerCover = displayPos->getCenteredPos();
	CollectionPos firstCover = displayPos->getOffsetPos(coverPos.getFirstCover() + 1);
	CollectionPos lastCover = displayPos->getOffsetPos(coverPos.getLastCover());
	lastCover++; // getOffsetPos does not return the end() element
	CollectionPos targetCover = appInstance->albumCollection->getTargetPos();

	int offset = appInstance->albumCollection->rank(firstCover) - appInstance->albumCollection->rank(centerCover);
	
	for (CollectionPos p = firstCover; p != lastCover; ++p, ++offset){
		float co = -centerOffset + offset;

		shared_ptr<ImgTexture> tex = texLoader->getLoadedImgTexture(p);
		tex->glBind();
		glPolygonMode(GL_FRONT_AND_BACK, GL_FILL);

		// calculate darkening
		float g = 1-(min(1.0f,(abs(co)-2)/5))*0.5f;
		if (abs(co) < 2)
			g = 1;
		/*float g = 1 - (abs(co)-2)*0.2f;
		g = 1 - abs(co)*0.1f;
		g = 1 - abs(zRot)/80;
		g= 1;
		if (g < 0) g = 0;*/
		glColor3f( g, g, g);
		glVectord origin(0, 0.5, 0);

		glQuad coverQuad = coverPos.getCoverQuad(co, tex->getAspect());
		
		glPushName(SELECTION_CENTER + offset);

		glBegin(GL_QUADS);
		if (glFogCoordf) glFogCoordf((GLfloat)coverPos.distanceToMirror(coverQuad.topLeft));
			glTexCoord2f(0.0f, 1.0f); // top left
			glVertex3fv((GLfloat*)&(coverQuad.topLeft.x));

			if (glFogCoordf) glFogCoordf((GLfloat)coverPos.distanceToMirror(coverQuad.topRight));
			glTexCoord2f(1.0f, 1.0f); // top right
			glVertex3fv((GLfloat*)&(coverQuad.topRight.x));

			if (glFogCoordf) glFogCoordf((GLfloat)coverPos.distanceToMirror(coverQuad.bottomRight));
			glTexCoord2f(1.0f, 0.0f); // bottom right
			glVertex3fv((GLfloat*)&(coverQuad.bottomRight.x));

			if (glFogCoordf) glFogCoordf((GLfloat)coverPos.distanceToMirror(coverQuad.bottomLeft));
			glTexCoord2f(0.0f, 0.0f); // bottom left
			glVertex3fv((GLfloat*)&(coverQuad.bottomLeft.x));
		glEnd();
		glPopName();

		if (showTarget){
			if (p == targetCover){
				bool clipPlane = false;
				if (glIsEnabled(GL_CLIP_PLANE0)){
					glDisable(GL_CLIP_PLANE0);
					clipPlane = true;
				}

				showTarget = false;
				
				glColor3f(GetRValue(cfgTitleColor) / 255.0f, GetGValue(cfgTitleColor) / 255.0f, GetBValue(cfgTitleColor) / 255.0f);

				glPolygonMode(GL_FRONT_AND_BACK,GL_LINE);
				glDisable(GL_TEXTURE_2D);

				glLineWidth((GLfloat)cfgHighlightWidth);
				glPolygonOffset(-1.0f, -1.0f);
				glEnable(GL_POLYGON_OFFSET_LINE);

				glEnable(GL_VERTEX_ARRAY);
				glVertexPointer(3, GL_FLOAT, 0, (void*) &coverQuad);
				glDrawArrays(GL_QUADS, 0, 4);

				glDisable(GL_POLYGON_OFFSET_LINE);

				glEnable(GL_TEXTURE_2D);


				if (clipPlane)
					glEnable(GL_CLIP_PLANE0);
			}
		}
	}

#ifdef COVER_ALPHA
//.........这里部分代码省略.........
开发者ID:qq2377654,项目名称:foo_chronflow,代码行数:101,代码来源:Renderer.cpp


示例13: glClearColor

void Renderer::drawBg(){
	glClearColor(GetRValue(cfgPanelBg)/255.0f, GetGValue(cfgPanelBg)/255.0f, GetBValue(cfgPanelBg)/255.0f, 0);
	glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT);
}
开发者ID:qq2377654,项目名称:foo_chronflow,代码行数:4,代码来源:Renderer.cpp


示例14: GetSubItemRect

//***************************************************************
void CMyColorList::DrawItem(LPDRAWITEMSTRUCT lpDrawItemStruct) 
{
    if (!lpDrawItemStruct) return;
	CDC*		pDC			= CDC::FromHandle(lpDrawItemStruct->hDC);
	int m=GetHeaderCtrl()->GetItemCount();
	for(int i=0;i<m;i++)
	{
		CString str;
		CRect rcItem;
		GetSubItemRect(lpDrawItemStruct->itemID,i,LVIR_LABEL,rcItem);
		str=GetItemText(lpDrawItemStruct->itemID,i);
		CMyColor *col=(CMyColor *)m_ArrayCol.GetAt(lpDrawItemStruct->itemID);
		pDC->SetBkMode(TRANSPARENT);
		CBrush brush;
		brush.CreateSolidBrush(col->colBack);
		pDC->FillRect(rcItem,&brush);
		pDC->SetTextColor(col->colText);
		LV_ITEM lvi;
		lvi.mask = LVIF_IMAGE | LVIF_STATE;
		lvi.iItem = lpDrawItemStruct->itemID;
		lvi.iSubItem = 0;
		lvi.stateMask = 0xFFFF;		// get all state flags
		GetItem(&lvi);
		if((lvi.state & LVIS_SELECTED)||(lvi.state & LVIS_FOCUSED))
		{
			if(m_blnSelect)
			{
				int r1=GetRValue(col->colSelect);
				int g1=GetGValue(col->colSelect);
				int b1=GetBValue(col->colSelect);
				for(int i=rcItem.Height()/2;i>0;i--)
				{
					r1=(r1+5)>255?255:(r1+5);
					g1=(g1+5)>255?255:(g1+5);
					b1=(b1+5)>255?255:(b1+5);
					CPen pen(PS_SOLID, 1, RGB(r1, g1, b1));
					CPen *old = pDC->SelectObject(&pen);
					pDC->MoveTo(rcItem.left,rcItem.top+i);
					pDC->LineTo(rcItem.right,rcItem.top+i);
					pDC->MoveTo(rcItem.left,rcItem.bottom-i);
					pDC->LineTo(rcItem.right,rcItem.bottom-i);
					pDC->SelectObject(old);
				}
			}
		}
		int nAlign=atoi(m_ArrayHeaderAlign.GetAt(i));
		if(i==0&&GetImageList(LVSIL_SMALL)!=NULL)
		{		
			CPoint ptImage;
			ptImage.x=rcItem.left;
			ptImage.y=rcItem.top;
			GetImageList(LVSIL_SMALL)->Draw(pDC,lvi.iImage,ptImage,ILD_TRANSPARENT);
			pDC->SetBkMode(TRANSPARENT);
			rcItem.left=rcItem.left+16;
			if(nAlign==LVCFMT_LEFT)
				rcItem.left=rcItem.left+8;
		}

		switch(nAlign)
		{
		case LVCFMT_LEFT:
			pDC->DrawText(str,rcItem,DT_LEFT);
			break;
		case LVCFMT_CENTER:
			pDC->DrawText(str,rcItem,DT_CENTER);
			break;
		case LVCFMT_RIGHT:
			pDC->DrawText(str,rcItem,DT_RIGHT);	
			break;
		default:
			pDC->DrawText(str,rcItem,DT_CENTER);
			break;
		}

	}
}
开发者ID:likebeta,项目名称:code-snippets,代码行数:77,代码来源:MyColorList.cpp


示例15: OleTranslateColor

/******************************************************************************
 *		OleTranslateColor	[OLEAUT32.421]
 *
 * Convert an OLE_COLOR to a COLORREF.
 *
 * PARAMS
 *  clr       [I] Color to convert
 *  hpal      [I] Handle to a palette for the conversion
 *  pColorRef [O] Destination for converted color, or NULL to test if the conversion is ok
 *
 * RETURNS
 *  Success: S_OK. The conversion is ok, and pColorRef contains the converted color if non-NULL.
 *  Failure: E_INVALIDARG, if any argument is invalid.
 *
 * FIXME
 *  Document the conversion rules.
 */
HRESULT WINAPI OleTranslateColor(
  OLE_COLOR clr,
  HPALETTE  hpal,
  COLORREF* pColorRef)
{
  COLORREF colorref;
  BYTE b = HIBYTE(HIWORD(clr));

  TRACE("(%08lx, %p, %p)\n", clr, hpal, pColorRef);

  /*
   * In case pColorRef is NULL, provide our own to simplify the code.
   */
  if (pColorRef == NULL)
    pColorRef = &colorref;

  switch (b)
  {
    case 0x00:
    {
      if (hpal != 0)
        *pColorRef =  PALETTERGB(GetRValue(clr),
                                 GetGValue(clr),
                                 GetBValue(clr));
      else
        *pColorRef = clr;

      break;
    }

    case 0x01:
    {
      if (hpal != 0)
      {
        PALETTEENTRY pe;
        /*
         * Validate the palette index.
         */
        if (GetPaletteEntries(hpal, LOWORD(clr), 1, &pe) == 0)
          return E_INVALIDARG;
      }

      *pColorRef = clr;

      break;
    }

    case 0x02:
      *pColorRef = clr;
      break;

    case 0x80:
    {
      int index = LOBYTE(LOWORD(clr));

      /*
       * Validate GetSysColor index.
       */
      if ((index < COLOR_SCROLLBAR) || (index > COLOR_MENUBAR))
        return E_INVALIDARG;

      *pColorRef =  GetSysColor(index);

      break;
    }

    default:
      return E_INVALIDARG;
  }

  return S_OK;
}
开发者ID:howard5888,项目名称:wineT,代码行数:89,代码来源:oleaut.c


示例16: GetClientRect

void COptionTreeItemColor::DrawControl(CDC *pDC, const RECT &rcRect)
{
	// Declare variables
	HGDIOBJ hOld;
	HGDIOBJ hOldBrush;
	COLORREF crOld;
	int nOldBack;
	CRect rcText, rcColor, rcClient;
	CString strText;
	CBrush bBrush;
	COLORREF crOldBack;

	// Get window rect
	GetClientRect(rcClient);

	// Select font
	hOld = pDC->SelectObject(m_otOption->GetNormalFont());

	// Create bush
	bBrush.CreateSolidBrush(m_crColor);
	
	// Set text color
	if (IsReadOnly() == TRUE || m_otOption->IsWindowEnabled() == FALSE)
	{
		crOld = pDC->SetTextColor(GetSysColor(COLOR_GRAYTEXT));
	}
	else
	{
		crOld = pDC->SetTextColor(GetTextColor());
	}

	// Set background color
	crOldBack = pDC->SetBkColor(GetBackgroundColor());	

	// Set background mode
	nOldBack = pDC->SetBkMode(TRANSPARENT);

	// Select brush
	hOldBrush = pDC->SelectObject(GetSysColorBrush(COLOR_BTNSHADOW));

	// Get color rectangle
	rcColor.left  = rcRect.left + 1;
	rcColor.right = rcColor.left + (long) OT_COLOR_SIZE;
	rcColor.top = rcRect.top + OT_SPACE - 2;
	rcColor.bottom = rcColor.top + (long) OT_COLOR_SIZE;

	// Draw color border
	rcColor.InflateRect(1, 1, 1, 1);
	pDC->PatBlt(rcColor.left, rcColor.top, rcColor.Width(), rcColor.Height(), PATCOPY);

	// Draw color
	rcColor.DeflateRect(1, 1, 1, 1);
	pDC->FillRect(rcColor, &bBrush);

	// Get text rectangle
	rcText.left  = rcColor.right + OT_SPACE;
	rcText.right = rcRect.right;
	rcText.top = rcRect.top;
	rcText.bottom = rcRect.bottom;

	// Get text
	if (GetOption(OT_COLOR_SHOWHEX) == TRUE)
	{
		strText.Format(_T("#%.6X"), m_crColor);
	}
	else
	{
		strText.Format(_T("RGB (%d, %d, %d)"), GetRValue(m_crColor), GetGValue(m_crColor), GetBValue(m_crColor));
	}

	// Draw text
	pDC->DrawText(strText, rcText, DT_SINGLELINE | DT_VCENTER);
	pDC->DrawText(strText, rcText, DT_SINGLELINE | DT_VCENTER | DT_CALCRECT);
	
	// Delete brush
	if (bBrush.GetSafeHandle() != NULL)
	{
		bBrush.DeleteObject();
	}

	// Restore GDI ojects
	pDC->SelectObject(hOldBrush);
	pDC->SelectObject(hOld);
	pDC->SetTextColor(crOld);
	pDC->SetBkMode(nOldBack);
	pDC->SetBkColor(crOldBack);
}
开发者ID:jjiezheng,项目名称:pap_full,代码行数:87,代码来源:OptionTreeItemColor.cpp


示例17: winToggleGetBgColorAttrib

static char* winToggleGetBgColorAttrib(Ihandle* ih)
{
  /* the most important use of this is to provide
     the correct background for images */
  if (iupwin_comctl32ver6 && ih->data->type==IUP_TOGGLE_IMAGE)
  {
    COLORREF cr;
    if (iupwinDrawGetThemeButtonBgColor(ih->handle, &cr))
      return iupStrReturnStrf("%d %d %d", (int)GetRValue(cr), (int)GetGValue(cr), (int)GetBValue(cr));
  }

  if (ih->data->type == IUP_TOGGLE_TEXT)
    return iupBaseNativeParentGetBgColorAttrib(ih);
  else
    return IupGetGlobal("DLGBGCOLOR");
}
开发者ID:mwoz,项目名称:Hildim.Source,代码行数:16,代码来源:iupwin_toggle.c


示例18: wxColour

//--------------------------------------------------------------------------
//  void wxPLDevDC::PutPixel( short x, short y, PLINT color )
//
//  Draw a pixel in color color @ (x,y).
//--------------------------------------------------------------------------
void wxPLDevDC::PutPixel( short x, short y, PLINT color )
{
    const wxPen oldpen = m_dc->GetPen();
    m_dc->SetPen( *( wxThePenList->FindOrCreatePen( wxColour( GetRValue( color ), GetGValue( color ), GetBValue( color ) ),
                         1, wxSOLID ) ) );
    m_dc->DrawPoint( x, y );
    AddtoClipRegion( x, y, x, y );
    m_dc->SetPen( oldpen );
}
开发者ID:FreeScienceCommunity,项目名称:PLPlot,代码行数:14,代码来源:deprecated_wxwidgets_dc.cpp


示例19: GetRValue

void CProgressCtrlX::DrawGradient(const CDrawInfo& info, const CRect &rcGrad, const CRect &rcClip, COLORREF clrStart, COLORREF clrEnd)
{
    // Split colors to RGB chanels, find chanel with maximum difference
    // between the start and end colors. This distance will determine
    // number of steps of gradient
    int r = (GetRValue(clrEnd) - GetRValue(clrStart));
    int g = (GetGValue(clrEnd) - GetGValue(clrStart));
    int b = (GetBValue(clrEnd) - GetBValue(clrStart));
    int nSteps = max(abs(r), max(abs(g), abs(b)));
    // if number of pixels in gradient less than number of steps -
    // use it as numberof steps
    int nPixels = rcGrad.Width();
    nSteps = min(nPixels, nSteps);
    if(nSteps == 0) nSteps = 1;

    float rStep = (float)r/nSteps;
    float gStep = (float)g/nSteps;
    float bStep = (float)b/nSteps;

    r = GetRValue(clrStart);
    g = GetGValue(clrStart);
    b = GetBValue(clrStart);

    BOOL fLowColor = info.pDC->GetDeviceCaps(RASTERCAPS) & RC_PALETTE;
    if(!fLowColor && nSteps > 1)
        if(info.pDC->GetDeviceCaps(BITSPIXEL)*info.pDC->GetDeviceCaps(PLANES) < 8)
            nSteps = 1; // for 16 colors no gradient

    float nWidthPerStep = (float)rcGrad.Width() / nSteps;
    CRect rcFill(rcGrad);
    CBrush br;
    // Start filling
    for (int i = 0; i < nSteps; i++)
    {
        rcFill.left = rcGrad.left + (int)(nWidthPerStep * i);
        rcFill.right = rcGrad.left + (int)(nWidthPerStep * (i+1));
        if(i == nSteps-1)	//last step (because of problems with float)
            rcFill.right = rcGrad.right;

        if(rcFill.right < rcClip.left)
            continue; // skip - band before cliping rect

        // clip it
        if(rcFill.left < rcClip.left)
            rcFill.left = rcClip.left;
        if(rcFi 

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C++ GetBackgroundColour函数代码示例发布时间:2022-05-30
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C++ GetBGObject函数代码示例发布时间:2022-05-30
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