Ejemplo n.º 1
0
        public void DrawImageAlpha(float alpha, AbstractImage image, RectangleF targetRect)
        {
            if (alpha <= 0)
            {
                return;
            }
            if (alpha >= 1)
            {
                DrawImage(image, targetRect.X, targetRect.Y, targetRect.Width, targetRect.Height);
                return;
            }

            Image gdiImage = image.Image;

            lock (gdiImage)
            {
                ColorMatrix matrix = new ColorMatrix();
                matrix.Matrix00 = matrix.Matrix11 = matrix.Matrix22 = 1;
                matrix.Matrix33 = alpha;

                ImageAttributes attr = new ImageAttributes();
                attr.SetColorMatrix(matrix);

                PointF[] dest = new PointF[]
                {
                    new PointF(targetRect.Left, targetRect.Top),
                    new PointF(targetRect.Right, targetRect.Top),
                    new PointF(targetRect.Left, targetRect.Bottom)
                };

                g.DrawImage(gdiImage, dest, new RectangleF(0, 0, gdiImage.Width, gdiImage.Height), GraphicsUnit.Pixel, attr);
            }
        }
Ejemplo n.º 2
0
        public void DrawImage(AbstractImage image, float x, float y, float width, float height)
        {
            var e = Append(new Element(ElementNames.IMAGE));

            e.Set("x", x);
            e.Set("y", y);
            e.Set("width", width);
            e.Set("height", height);
            e.Set("xlink:href", image.Url);
        }
Ejemplo n.º 3
0
        public void DrawImageAlpha(float alpha, AbstractImage image, RectangleF targetRect)
        {
            var e = Append(new Element(ElementNames.IMAGE));

            e.Set("x", targetRect.X);
            e.Set("y", targetRect.Y);
            e.Set("width", targetRect.Width);
            e.Set("height", targetRect.Height);
            e.Set("opacity", alpha);
            e.Set("xlink:href", image.Url);
        }
Ejemplo n.º 4
0
 public void DrawImage(AbstractImage image, float x, float y, float width, float height)
 {
     g.DrawImage(image.Image, x, y, width, height);
 }
Ejemplo n.º 5
0
        public void DrawImageAlpha(float alpha, AbstractImage mimage, RectangleF targetRect)
        {
            // Clamp and Quantize
            alpha = Util.Clamp(alpha, 0f, 1f);
            alpha = (float)Math.Round(alpha * 16f) / 16f;
            if (alpha <= 0f)
            {
                return;
            }
            if (alpha >= 1f)
            {
                g.DrawImage(mimage.XImage, targetRect);
                return;
            }

            int key = (int)Math.Round(alpha * 16);

            Image  image = mimage.Image;
            XImage ximage;
            int    w, h;

            lock (image)
            {
                w = image.Width;
                h = image.Height;

                if (image.Tag == null || !(image.Tag is Dictionary <int, XImage>))
                {
                    image.Tag = new Dictionary <int, XImage>();
                }

                Dictionary <int, XImage> dict = image.Tag as Dictionary <int, XImage>;
                if (dict.ContainsKey(key))
                {
                    ximage = dict[key];
                }
                else
                {
                    // Need to construct a new image (PdfSharp can't alpha-render images)
                    // Memoize these in the image itself, since most requests will be from
                    // a small set

                    Bitmap scratchBitmap = new Bitmap(w, h, PixelFormat.Format32bppArgb);
                    using (var scratchGraphics = Graphics.FromImage(scratchBitmap))
                    {
                        ColorMatrix matrix = new ColorMatrix();
                        matrix.Matrix00 = matrix.Matrix11 = matrix.Matrix22 = 1;
                        matrix.Matrix33 = alpha;

                        ImageAttributes attr = new ImageAttributes();
                        attr.SetColorMatrix(matrix);

                        scratchGraphics.DrawImage(image, new Rectangle(0, 0, w, h), 0, 0, w, h, GraphicsUnit.Pixel, attr);
                    }

                    ximage    = XImage.FromGdiPlusImage(scratchBitmap);
                    dict[key] = ximage;
                }
            }

            lock (ximage)
            {
                g.DrawImage(ximage, targetRect);
            }
        }