C++ ImageAttributes::SetWrapMode方法代码示例

本文整理汇总了C++中ImageAttributes::SetWrapMode方法的典型用法代码示例。如果您正苦于以下问题：C++ ImageAttributes::SetWrapMode方法的具体用法？C++ ImageAttributes::SetWrapMode怎么用？C++ ImageAttributes::SetWrapMode使用的例子？那么, 这里精选的方法代码示例或许可以为您提供帮助。您也可以进一步了解该方法所在类ImageAttributes的用法示例。

在下文中一共展示了ImageAttributes::SetWrapMode方法的9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，您的评价将有助于系统推荐出更棒的C++代码示例。

示例1: RenderPage

bool ImagesEngine::RenderPage(HDC hDC, RectI screenRect, int pageNo, float zoom, int rotation, RectD *pageRect, RenderTarget target, AbortCookie **cookie_out)
{
    Bitmap *bmp = LoadImage(pageNo);
    if (!bmp)
        return false;

    RectD pageRc = pageRect ? *pageRect : PageMediabox(pageNo);
    RectI screen = Transform(pageRc, pageNo, zoom, rotation).Round();

    Graphics g(hDC);
    g.SetCompositingQuality(CompositingQualityHighQuality);
    g.SetSmoothingMode(SmoothingModeAntiAlias);
    g.SetPageUnit(UnitPixel);

    Color white(0xFF, 0xFF, 0xFF);
    Rect screenR(screenRect.x, screenRect.y, screenRect.dx, screenRect.dy);
    g.SetClip(screenR);
    g.FillRectangle(&SolidBrush(white), screenR);

    Matrix m;
    GetTransform(m, pageNo, zoom, rotation);
    m.Translate((REAL)(screenRect.x - screen.x), (REAL)(screenRect.y - screen.y), MatrixOrderAppend);
    g.SetTransform(&m);

    RectI pageRcI = PageMediabox(pageNo).Round();
    ImageAttributes imgAttrs;
    imgAttrs.SetWrapMode(WrapModeTileFlipXY);
    Status ok = g.DrawImage(bmp, Rect(0, 0, pageRcI.dx, pageRcI.dy), 0, 0, pageRcI.dx, pageRcI.dy, UnitPixel, &imgAttrs);
    return ok == Ok;
}

开发者ID:Livit，项目名称:moonpdf，代码行数:30，代码来源:ImagesEngine.cpp

示例2: OnPaint

void CEnteringRoomDlg::OnPaint()
{
	CPaintDC dc(this); // device context for painting
	// TODO: 在此处添加消息处理程序代码
	// 不为绘图消息调用 CDialog::OnPaint()
	
	//中间
	CRect rcClient ;
	GetClientRect( &rcClient ) ;
	Graphics    graphics(dc);

	ImageAttributes imgAtt;
	imgAtt.SetWrapMode(WrapModeTileFlipXY);//GDI+在位伸图片时会自动加上渐变效果。但此处不需要，所以得加上此属性

	//去掉边框
	//左上、上中、右上
	graphics.DrawImage(m_imgTopLeft,Rect(0, 0, m_imgTopLeft->GetWidth(), m_imgTopLeft->GetHeight()), 
		                            0, 0, m_imgTopLeft->GetWidth(),  m_imgTopLeft->GetHeight(),UnitPixel,&imgAtt);//没拉抻

	graphics.DrawImage(m_imgTopMid, Rect(m_imgTopLeft->GetWidth(), 0, rcClient.Width() - m_imgTopLeft->GetWidth() * 2, m_imgTopMid->GetHeight()), 
		                            0, 0, rcClient.Width() - m_imgTopLeft->GetWidth() * 2, m_imgTopMid->GetHeight(), UnitPixel,&imgAtt);

	graphics.DrawImage(m_imgTopRight, Rect(rcClient.right - m_imgTopRight->GetWidth() - 1, 0, m_imgTopRight->GetWidth(), m_imgTopRight->GetHeight()), 
		                             0, 0, m_imgTopRight->GetWidth(), m_imgTopRight->GetHeight(), UnitPixel,&imgAtt);

	//左中、右中
	graphics.DrawImage(m_imgMidLeft, Rect(0, m_imgTopMid->GetHeight(), m_imgMidLeft->GetWidth(), rcClient.Height() - m_imgTopMid->GetHeight() * 2), 
		                             0, 0, m_imgMidLeft->GetWidth(), rcClient.Height() - m_imgTopMid->GetHeight() * 2, UnitPixel,&imgAtt);

	graphics.DrawImage(m_imgMidRight, Rect(rcClient.right - m_imgMidRight->GetWidth() - 1, m_imgTopMid->GetHeight(), m_imgMidRight->GetWidth(), rcClient.Height() - m_imgTopMid->GetHeight() * 2), 
		                              0, 0,  m_imgMidRight->GetWidth(), rcClient.Height() - m_imgTopMid->GetHeight() * 2,UnitPixel,&imgAtt);

	//左下、下中、右下
	graphics.DrawImage(m_imgBottomLeft,Rect(0, rcClient.bottom - m_imgBottomLeft->GetHeight() - 1, m_imgBottomLeft->GetWidth(), m_imgBottomLeft->GetHeight()), 
		                               0, 0, m_imgBottomLeft->GetWidth(), m_imgBottomLeft->GetHeight(), UnitPixel,&imgAtt);

	graphics.DrawImage(m_imgBottomMid, Rect(m_imgMidLeft->GetWidth(), rcClient.bottom - m_imgBottomMid->GetHeight() - 1, rcClient.Width() - m_imgMidLeft->GetWidth() * 2, m_imgBottomMid->GetHeight()), 
		                               0, 0,rcClient.Width() - m_imgMidLeft->GetWidth() * 2, m_imgBottomMid->GetHeight(), UnitPixel,&imgAtt);

	graphics.DrawImage(m_imgBottomRight,Rect(rcClient.right - m_imgBottomRight->GetWidth() - 1, rcClient.bottom - m_imgBottomRight->GetHeight() - 1, m_imgBottomRight->GetWidth(), m_imgBottomRight->GetHeight()),
		                                0, 0, m_imgBottomRight->GetWidth(), m_imgBottomRight->GetHeight(), UnitPixel,&imgAtt);
	//中间
	graphics.DrawImage( m_pPic->GetCurImage() ,Rect(m_imgMidLeft->GetWidth(), m_imgTopMid->GetHeight(), rcClient.Width() - m_imgMidLeft->GetWidth() * 2 - 1 , rcClient.Height() - m_imgTopMid->GetHeight() * 2 - 1),
		                        0, 0,  rcClient.Width() - m_imgMidLeft->GetWidth() * 2 - 1 , rcClient.Height() - m_imgTopMid->GetHeight() * 2 - 1,UnitPixel,&imgAtt) ;
	/*graphics.DrawImage( m_pPic->GetCurImage() ,Rect(0, 0, rcClient.Width(), rcClient.Height()),
		0, 0,  rcClient.Width(), rcClient.Height(),UnitPixel,&imgAtt) ;*/
}

开发者ID:mengskysama，项目名称:V8，代码行数:47，代码来源:EnteringRoomDlg.cpp

示例3: ResizeBitmap

//输入原图片指针的指针，及新图片的新宽高
//示例：ResizeBitmap(&m_pOrignImageS,width,height);
BOOL CExampleDemoDlg::ResizeBitmap(Bitmap **ppImg, int m_NewWidth, int m_NewHeight)
{
	if (ppImg == NULL || *ppImg == NULL)
	{
		return FALSE;
	}

	Bitmap *m_NewImage = new Bitmap(m_NewWidth, m_NewHeight);

	ColorMatrix colorMatrix = {
		1.0f, 0.0f, 0.0f, 0.0f, 0.0f,
		0.0f, 1.0f, 0.0f, 0.0f, 0.0f,
		0.0f, 0.0f, 1.0f, 0.0f, 0.0f,
		0.0f, 0.0f, 0.0f, 1.0f, 0.0f,
		0.0f, 0.0f, 0.0f, 0.0f, 1.0f };

	ImageAttributes imageAtt;
	imageAtt.SetColorMatrix(&colorMatrix);
	imageAtt.SetWrapMode(WrapModeTileFlipXY);

	Graphics gs(m_NewImage);
	gs.SetSmoothingMode(SmoothingModeAntiAlias);
	gs.SetInterpolationMode(InterpolationModeHighQuality);
	gs.DrawImage(
		(*ppImg),
		Rect(0, 0, m_NewWidth, m_NewHeight),  // Destination rectangle
		0,								   // Source rectangle temp->x 
		0,								   // Source rectangle temp->y
		(*ppImg)->GetWidth(),     // Source rectangle width
		(*ppImg)->GetHeight(),    // Source rectangle height
		UnitPixel,
		&imageAtt);

	//交换指针
	delete (*ppImg);
	(*ppImg) = m_NewImage;
	return TRUE;
}

开发者ID:hjimce，项目名称:EyeLabelDemo，代码行数:40，代码来源:ExampleDemoDlg.cpp

示例4: InitImageAttributes

// ***************************************************************
//		InitImageAttributes()
// ***************************************************************
void TilesDrawer::InitImageAttributes(TileManager* manager, ImageAttributes& attr)
{
	attr.SetWrapMode(WrapModeTileFlipXY);

	if (!manager->IsBackground())
	{
		Gdiplus::ColorMatrix m = ImageHelper::CreateMatrix(manager->contrast,
			manager->brightness,
			manager->saturation,
			manager->hue,
			0.0f, RGB(255, 255, 255), false, manager->get_Alpha() / 255.0f);

		attr.SetColorMatrix(&m);

		if (manager->useTransparentColor)
		{
			Gdiplus::Color color(GetRValue(manager->transparentColor),
								 GetGValue(manager->transparentColor),
								 GetBValue(manager->transparentColor));

			attr.SetColorKey(color, color);
		}
	}
}

开发者ID:liuzhumei，项目名称:MapWinGIS，代码行数:27，代码来源:TilesDrawer.cpp

示例5: Draw

/*
** Draws the meter on the double buffer
**
*/
bool MeterImage::Draw(Gfx::Canvas& canvas)
{
	if (!Meter::Draw(canvas)) return false;

	if (m_Image.IsLoaded())
	{
		// Copy the image over the doublebuffer
		Bitmap* drawBitmap = m_Image.GetImage();

		int imageW = drawBitmap->GetWidth();
		int imageH = drawBitmap->GetHeight();

		if (imageW == 0 || imageH == 0 || m_W == 0 || m_H == 0) return true;

		int x = GetX();
		int y = GetY();

		int drawW = m_W;
		int drawH = m_H;

		if (drawW == imageW && drawH == imageH &&
			m_ScaleMargins.left == 0 && m_ScaleMargins.top == 0 && m_ScaleMargins.right == 0 && m_ScaleMargins.bottom == 0)
		{
			canvas.DrawBitmap(drawBitmap, Rect(x, y, drawW, drawH), Rect(0, 0, imageW, imageH));
		}
		else if (m_DrawMode == DRAWMODE_TILE)
		{
			Gdiplus::Graphics& graphics = canvas.BeginGdiplusContext();

			ImageAttributes imgAttr;
			imgAttr.SetWrapMode(WrapModeTile);

			Rect r(x, y, drawW, drawH);
			graphics.DrawImage(drawBitmap, r, 0, 0, drawW, drawH, UnitPixel, &imgAttr);

			canvas.EndGdiplusContext();
		}
		else if (m_DrawMode == DRAWMODE_KEEPRATIO || m_DrawMode == DRAWMODE_KEEPRATIOANDCROP)
		{
			int cropX = 0;
			int cropY = 0;
			int cropW = imageW;
			int cropH = imageH;

			if (m_WDefined && m_HDefined)
			{
				REAL imageRatio = imageW / (REAL)imageH;
				REAL meterRatio = m_W / (REAL)m_H;

				if (imageRatio != meterRatio)
				{
					if (m_DrawMode == DRAWMODE_KEEPRATIO)
					{
						if (imageRatio > meterRatio)
						{
							drawH = m_W * imageH / imageW;
							y += (m_H - drawH) / 2;
						}
						else
						{
							drawW = m_H * imageW / imageH;
							x += (m_W - drawW) / 2;
						}
					}
					else
					{
						if (imageRatio > meterRatio)
						{
							cropW = (int)(imageH * meterRatio);
							cropX = (imageW - cropW) / 2;
						}
						else
						{
							cropH = (int)(imageW / meterRatio);
							cropY = (imageH - cropH) / 2;
						}
					}
				}
			}

			Rect r(x, y, drawW, drawH);
			canvas.DrawBitmap(drawBitmap, r, Rect(cropX, cropY, cropW, cropH));
		}
		else
		{
			const RECT& m = m_ScaleMargins;

			if (m.top > 0)
			{
				if (m.left > 0)
				{
					// Top-Left
					Rect r(x, y, m.left, m.top);
					canvas.DrawBitmap(drawBitmap, r, Rect(0, 0, m.left, m.top));
				}

//.........这里部分代码省略.........

开发者ID:BIGDROP，项目名称:rainmeter，代码行数:101，代码来源:MeterImage.cpp

示例6: DrawSudoku

void DrawSudoku(Image * pImage, Graphics * pGraphics, RectF& rcDraw
	, UINT nLeft, UINT nTop, UINT nRight, UINT nBottom )
{
	if (pGraphics == NULL) return;
	if (pImage == NULL) return;

	UINT cx = pImage->GetWidth();
	UINT cy = pImage->GetHeight();

	if ( nLeft + nRight > cx )
	{
		nLeft = nRight = 0;
	}
	if ( nTop + nBottom > cy )
	{
		nTop = nBottom = 0;
	}

	//左上角
	if (nLeft > 0 && nTop > 0 && nTop < cy && nLeft < cx)
	{
		pGraphics->DrawImage( pImage
			, rcDraw.GetLeft(), rcDraw.GetTop()
			, 0.0f, 0.0f, (float)nLeft, (float)nTop
			, Gdiplus:: UnitPixel );
	}
	//右上角
	if (nRight > 0 && nTop > 0 && nTop < cy && nRight < cx)
	{
		pGraphics->DrawImage( pImage
			, rcDraw.GetRight() - (float)nRight, rcDraw.GetTop() 
			, (float)cx - (float)nRight, 0.0f, (float)nRight, (float)nTop
			, Gdiplus:: UnitPixel );
	}
	//右下角
	if (nRight > 0 && nBottom > 0 && nBottom < cy && nRight < cx)
	{
		pGraphics->DrawImage( pImage
			, rcDraw.GetRight() - (float)nRight, rcDraw.GetBottom() - (float)nBottom
			, (float)cx - (float)nRight, (float)cy - (float)nBottom, (float)nRight, (float)nBottom
			, Gdiplus:: UnitPixel );
	}
	//左下角
	if (nLeft > 0 && nBottom > 0 && nBottom < cy && nLeft < cx)
	{
		pGraphics->DrawImage( pImage
			, rcDraw.GetLeft(), rcDraw.GetBottom() - (float)nBottom
			, 0.0f, (float)cy - (float)nBottom , (float)nLeft, (float)nBottom
			, Gdiplus:: UnitPixel );
	}
	
	ImageAttributes ImgAtt;
	ImgAtt.SetWrapMode(WrapModeTileFlipXY);

	//左边
	if (nLeft > 0 && cy - nTop - nBottom > 0)
	{
		RectF rc(rcDraw.GetLeft(), rcDraw.GetTop() + (float)nTop
			, (float)nLeft, rcDraw.Height - (float)nTop - (float)nBottom );
		pGraphics->DrawImage( pImage
			, rc
			, 0.0f, (float)nTop, (float)nLeft, (float)cy - (float)nTop - (float)nBottom
			, UnitPixel, &ImgAtt );
	}
	//上边
	if (nTop > 0 && cx - nLeft - nRight > 0)
	{
		RectF rc(rcDraw.GetLeft() + (float)nLeft, rcDraw.GetTop()
			, rcDraw.Width - (float)nLeft - (float)nRight, (float)nTop );
		pGraphics->DrawImage( pImage
			, rc
			, (float)nLeft, 0.0f, (float)cx - (float)nLeft - (float)nRight, (float)nTop
			, UnitPixel, &ImgAtt );
	}
	//右边
	if (nRight > 0 && cy - nTop - nBottom > 0)
	{
		RectF rc(rcDraw.GetRight() - (float)nRight, rcDraw.GetTop() + (float)nTop
			, (float)nRight, rcDraw.Height - (float)nTop - (float)nBottom );
		pGraphics->DrawImage( pImage
			, rc
			, (float)cx - (float)nRight, (float)nTop, (float)nRight, (float)cy - (float)nTop - (float)nBottom
			, UnitPixel, &ImgAtt );
	}
	//下边
	if (nBottom > 0 && cx - nLeft - nRight > 0)
	{
		RectF rc(rcDraw.GetLeft() + (float)nLeft, rcDraw.GetBottom() - (float)nBottom
			, rcDraw.Width - (float)nLeft - (float)nRight, (float)nBottom );
		pGraphics->DrawImage( pImage
			, rc
			, (float)nLeft, (float)cy - (float)nBottom, (float)cx - (float)nLeft - (float)nRight, (float)nBottom
			, UnitPixel, &ImgAtt );

		CString str;
		str.Format("下边:%0.4f", rc.GetTop());
		OutputDebugString(str);
	}
	//中间
	{
//.........这里部分代码省略.........

开发者ID:cugxiangzhenwei，项目名称:WorkPlatForm，代码行数:101，代码来源:GDIPlusInit.cpp

示例7: WndProc

LRESULT CALLBACK WndProc(HWND hWnd, UINT message, WPARAM wParam, LPARAM lParam)
{
     PAINTSTRUCT ps;
     HDC hdc, hCompatibleDC;
     HANDLE hOldBitmap, hBitmap;
     BITMAP Bitmap;
     RECT rect;
     int i=0;
     
     GetClientRect(hWnd, &rect);
     int j, k;


     TCHAR greeting[] = _T("Elaborat de studentul Ghelas Marc, TI-141.");
     hBitmap = (HBITMAP)LoadImage(NULL, _T("E:\\example.BMP"), IMAGE_BITMAP, 0, 0, LR_LOADFROMFILE);

     //hLocalDC = CreateCompatibleDC(NULL);
     switch (message)
     {
     case WM_PAINT:
     {
                       GetClientRect(hWnd, &rect);
                       hdc = BeginPaint(hWnd, &ps);
                       HBRUSH hBrush;
                       
                            Graphics graphics(hdc);
                            ImageAttributes IAttr;
                            
                            RectF destination(45, 85, rect.right - 85, rect.bottom - 170);
                            Color colorRGB(0, 0, 0);
                            
                            IAttr.SetWrapMode(WrapModeClamp, colorRGB);
                            Image image(L"E:\\example.BMP");
                            
                            graphics.TranslateTransform(pos.x+45, pos.y+85);
                            graphics.RotateTransform(rotate.x);
                            graphics.TranslateTransform(-45.0f, -85.0f);
                            graphics.ScaleTransform(stretch.x, stretch.y);
                            graphics.DrawImage(&image, destination, 0, 0, 290, 450, UnitPixel, &IAttr);
                           
                            
                            
                            

                       //Graphics graphics(hdc);
                       //
                       //Pen pen(Color(255, 0, 0, 255));
                       //
                       //Matrix matrix;
                       //matrix.Translate(250.0f, 200.0f);
                       //matrix.RotateAt(rotate.x, PointF(250.0f, 200.0f), MatrixOrderAppend);
                       //
                       //graphics.SetTransform(&matrix);
                       //graphics.DrawRectangle(&pen, -40, -20, 80, 40);
                          

                       //GetObject(hBitmap, sizeof(BITMAP), &Bitmap);
                       //hCompatibleDC = CreateCompatibleDC(hdc);
                       //hOldBitmap = SelectObject(hCompatibleDC, hBitmap);
                       //if (hCompatibleDC){
                       //
                       //     StretchBlt(hdc, pos.x + 45, pos.y + 85, stretch.x - 85, stretch.y - 170,
                       //          hCompatibleDC, 0, 0, Bitmap.bmWidth,
                       //          Bitmap.bmHeight, SRCCOPY);
                       //
                       //
                       //}
                       //
                       //SelectObject(hCompatibleDC, hOldBitmap);
                       //DeleteObject(hBitmap);
                       //DeleteDC(hCompatibleDC);
                       EndPaint(hWnd, &ps);
                       break;
     }
     case WM_KEYDOWN:
     
                         switch (wParam)
                         {
                         case VK_RIGHT:
                              pos.x+=5;
                              InvalidateRect(hWnd, NULL, TRUE);
                              break;         
                         case VK_LEFT:       
                              pos.x-=5;       
                              i++;
                              InvalidateRect(hWnd, NULL, TRUE);
                              break;        
                         case VK_UP:        
                              pos.y-=5;      
                              InvalidateRect(hWnd, NULL, TRUE);
                              break;         
                         case VK_DOWN:       
                              pos.y+=5;       
                              InvalidateRect(hWnd, NULL, TRUE);
                              break;
                         case 0x41:
                              stretch.x+=0.1f;
                              InvalidateRect(hWnd, NULL, TRUE);
                              break;
                         case 0x5A:
//.........这里部分代码省略.........

开发者ID:Erdboden，项目名称:PWLabs，代码行数:101，代码来源:Source.cpp

示例8: Draw

/*
** Draws the meter on the double buffer
**
*/
bool CMeterImage::Draw(Graphics& graphics)
{
	if (!CMeter::Draw(graphics)) return false;

	if (m_Image.IsLoaded())
	{
		// Copy the image over the doublebuffer
		Bitmap* drawBitmap = m_Image.GetImage();

		int imageW = drawBitmap->GetWidth();
		int imageH = drawBitmap->GetHeight();

		if (imageW == 0 || imageH == 0 || m_W == 0 || m_H == 0) return true;

		int x = GetX();
		int y = GetY();

		int drawW = m_W;
		int drawH = m_H;

		if (drawW == imageW && drawH == imageH &&
			m_ScaleMargins.left == 0 && m_ScaleMargins.top == 0 && m_ScaleMargins.right == 0 && m_ScaleMargins.bottom == 0)
		{
			Rect r(x, y, drawW, drawH);
			graphics.DrawImage(drawBitmap, r, 0, 0, imageW, imageH, UnitPixel);
		}
		else if (m_Tile)
		{
			ImageAttributes imgAttr;
			imgAttr.SetWrapMode(WrapModeTile);

			Rect r(x, y, drawW, drawH);
			graphics.DrawImage(drawBitmap, r, 0, 0, drawW, drawH, UnitPixel, &imgAttr);
		}
		else if (m_PreserveAspectRatio)
		{
			if (m_WDefined && m_HDefined)
			{
				REAL imageRatio = imageW / (REAL)imageH;
				REAL meterRatio = m_W / (REAL)m_H;

				if (imageRatio >= meterRatio)
				{
					drawW = m_W;
					drawH = m_W * imageH / imageW;
				}
				else
				{
					drawW = m_H * imageW / imageH;
					drawH = m_H;
				}

				// Centering
				x += (m_W - drawW) / 2;
				y += (m_H - drawH) / 2;
			}

			Rect r(x, y, drawW, drawH);
			graphics.DrawImage(drawBitmap, r, 0, 0, imageW, imageH, UnitPixel);
		}
		else
		{
			const RECT m = m_ScaleMargins;

			if (m.top > 0)
			{
				if (m.left > 0)
				{
					// Top-Left
					Rect r(x, y, m.left, m.top);
					graphics.DrawImage(drawBitmap, r, 0, 0, m.left, m.top, UnitPixel);
				}

				// Top
				Rect r(x + m.left, y, drawW - m.left - m.right, m.top);
				graphics.DrawImage(drawBitmap, r, m.left, 0, imageW - m.left - m.right, m.top, UnitPixel);

				if (m.right > 0)
				{
					// Top-Right
					Rect r(x + drawW - m.right, y, m.right, m.top);
					graphics.DrawImage(drawBitmap, r, imageW - m.right, 0, m.right, m.top, UnitPixel);
				}
			}

			if (m.left > 0)
			{
				// Left
				Rect r(x, y + m.top, m.left, drawH - m.top - m.bottom);
				graphics.DrawImage(drawBitmap, r, 0, m.top, m.left, imageH - m.top - m.bottom, UnitPixel);
			}

			// Center
			Rect r(x + m.left, y + m.top, drawW - m.left - m.right, drawH - m.top - m.bottom);
			graphics.DrawImage(drawBitmap, r, m.left, m.top, imageW - m.left - m.right, imageH - m.top - m.bottom, UnitPixel);

//.........这里部分代码省略.........

开发者ID:VladimirKhomenko，项目名称:rainmeter，代码行数:101，代码来源:MeterImage.cpp

示例9: Draw

/*
** Draws the meter on the double buffer
**
*/
bool MeterImage::Draw(Gfx::Canvas& canvas)
{
	if (!Meter::Draw(canvas)) return false;

	if (m_Image.IsLoaded())
	{
		// Copy the image over the doublebuffer
		Bitmap* drawBitmap = m_Image.GetImage();

		int imageW = drawBitmap->GetWidth();
		int imageH = drawBitmap->GetHeight();
		
		if (imageW == 0 || imageH == 0 || m_W == 0 || m_H == 0) return true;

		Gdiplus::Rect meterRect = GetMeterRectPadding();

		int drawW = meterRect.Width;
		int drawH = meterRect.Height;

		bool hasMask = (m_Skin->GetUseD2D() && m_MaskImage.IsLoaded());
		if (hasMask)
		{
			Bitmap* maskBitmap = m_MaskImage.GetImage();

			imageW = maskBitmap->GetWidth();
			imageH = maskBitmap->GetHeight();
			int imageMW = drawBitmap->GetWidth();
			int imageMH = drawBitmap->GetHeight();

			int cropX = 0;
			int cropY = 0;
			int cropW = imageMW;
			int cropH = imageMH;

			REAL imageratio = imageMW / (REAL)imageMH;
			REAL meterRatio = meterRect.Width / (REAL)meterRect.Height;

			if (imageratio != meterRatio)
			{
				if (imageratio > meterRatio)
				{
					cropW = (int)(imageMH * meterRatio);
					cropX = (imageMW - cropW) / 2;
				}
				else
				{
					cropH = (int)(imageMW / meterRatio);
					cropY = (imageMH - cropH) / 2;
				}
			}

			canvas.DrawMaskedBitmap(drawBitmap, maskBitmap, meterRect, Rect(0, 0, imageW, imageH), Gdiplus::Rect(cropX, cropY, cropW, cropH));
		}

		else if (drawW == imageW && drawH == imageH &&
			m_ScaleMargins.left == 0 && m_ScaleMargins.top == 0 && m_ScaleMargins.right == 0 && m_ScaleMargins.bottom == 0)
		{
			canvas.DrawBitmap(drawBitmap, Rect(meterRect.X, meterRect.Y, drawW, drawH), Rect(0, 0, imageW, imageH));
		}
		else if (m_DrawMode == DRAWMODE_TILE)
		{
			Gdiplus::Graphics& graphics = canvas.BeginGdiplusContext();

			ImageAttributes imgAttr;
			imgAttr.SetWrapMode(WrapModeTile);

			Rect r(meterRect.X, meterRect.Y, drawW, drawH);
			graphics.DrawImage(drawBitmap, r, 0, 0, drawW, drawH, UnitPixel, &imgAttr);

			canvas.EndGdiplusContext();
		}
		else if (m_DrawMode == DRAWMODE_KEEPRATIO || m_DrawMode == DRAWMODE_KEEPRATIOANDCROP)
		{
			int cropX = 0;
			int cropY = 0;
			int cropW = imageW;
			int cropH = imageH;

			if (m_WDefined && m_HDefined)
			{
				REAL imageRatio = imageW / (REAL)imageH;
				REAL meterRatio = meterRect.Width / (REAL)meterRect.Height;

				if (imageRatio != meterRatio)
				{
					if (m_DrawMode == DRAWMODE_KEEPRATIO)
					{
						if (imageRatio > meterRatio)
						{
							drawH = meterRect.Width * imageH / imageW;
							meterRect.Y += (meterRect.Height - drawH) / 2;
						}
						else
						{
							drawW = meterRect.Height * imageW / imageH;
							meterRect.X += (meterRect.Width - drawW) / 2;
//.........这里部分代码省略.........

开发者ID:babaozhouy5，项目名称:rainmeter，代码行数:101，代码来源:MeterImage.cpp

注：本文中的ImageAttributes::SetWrapMode方法示例由纯净天空整理自Github/MSDocs等开源代码及文档管理平台，相关代码片段筛选自各路编程大神贡献的开源项目，源码版权归原作者所有，传播和使用请参考对应项目的License；未经允许，请勿转载。