示例#1
0
        /// <summary>
        /// 
        /// </summary>
        /// <param name="page"></param>
        private static void DrawWatermarkOverPageContent(PdfPage page)
        {
            PdfBrush redBrush = new PdfBrush(new PdfRgbColor(192, 0, 0));
            PdfStandardFont helvetica = new PdfStandardFont(PdfStandardFontFace.HelveticaBold, 32);

            // The page graphics is located by default on top of existing page content.
            //page.SetGraphicsPosition(PdfPageGraphicsPosition.OverExistingPageContent);

            // Draw the watermark over page content.
            // Page content under the watermark will be masked.
            page.Graphics.DrawString("Sample watermark over page content", helvetica, redBrush, 20, 335);

            page.Graphics.SaveGraphicsState();

            // Draw the watermark over page content but using the Multiply blend mode.
            // The watermak will appear as if drawn under the page content, useful when watermarking scanned documents.
            // If the watermark is drawn under page content for scanned documents, it will not be visible because the scanned image will block it.
            PdfExtendedGraphicState gs1 = new PdfExtendedGraphicState();
            gs1.BlendMode = PdfBlendMode.Multiply;
            page.Graphics.SetExtendedGraphicState(gs1);
            page.Graphics.DrawString("Sample watermark over page content", helvetica, redBrush, 20, 385);

            // Draw the watermark over page content but using the Luminosity blend mode.
            // Both the page content and the watermark will be visible.
            PdfExtendedGraphicState gs2 = new PdfExtendedGraphicState();
            gs2.BlendMode = PdfBlendMode.Luminosity;
            page.Graphics.SetExtendedGraphicState(gs2);
            page.Graphics.DrawString("Sample watermark over page content", helvetica, redBrush, 20, 435);

            page.Graphics.RestoreGraphicsState();
        }
示例#2
0
        /// <summary>
        ///
        /// </summary>
        /// <param name="page"></param>
        private static void DrawWatermarkOverPageContent(PdfPage page)
        {
            PdfBrush        redBrush  = new PdfBrush(new PdfRgbColor(192, 0, 0));
            PdfStandardFont helvetica = new PdfStandardFont(PdfStandardFontFace.HelveticaBold, 32);

            // The page graphics is located by default on top of existing page content.
            //page.SetGraphicsPosition(PdfPageGraphicsPosition.OverExistingPageContent);

            // Draw the watermark over page content.
            // Page content under the watermark will be masked.
            page.Graphics.DrawString("Sample watermark over page content", helvetica, redBrush, 20, 335);

            page.Graphics.SaveGraphicsState();

            // Draw the watermark over page content but using the Multiply blend mode.
            // The watermak will appear as if drawn under the page content, useful when watermarking scanned documents.
            // If the watermark is drawn under page content for scanned documents, it will not be visible because the scanned image will block it.
            PdfExtendedGraphicState gs1 = new PdfExtendedGraphicState();

            gs1.BlendMode = PdfBlendMode.Multiply;
            page.Graphics.SetExtendedGraphicState(gs1);
            page.Graphics.DrawString("Sample watermark over page content", helvetica, redBrush, 20, 385);

            // Draw the watermark over page content but using the Luminosity blend mode.
            // Both the page content and the watermark will be visible.
            PdfExtendedGraphicState gs2 = new PdfExtendedGraphicState();

            gs2.BlendMode = PdfBlendMode.Luminosity;
            page.Graphics.SetExtendedGraphicState(gs2);
            page.Graphics.DrawString("Sample watermark over page content", helvetica, redBrush, 20, 435);

            page.Graphics.RestoreGraphicsState();
        }
示例#3
0
        /// <summary>
        ///
        /// </summary>
        /// <param name="page"></param>
        private static void DrawWatermarkWithTransparency(PdfPage page)
        {
            PdfBrush        redBrush  = new PdfBrush(new PdfRgbColor(192, 0, 0));
            PdfStandardFont helvetica = new PdfStandardFont(PdfStandardFontFace.HelveticaBold, 36);

            // The page graphics is located by default on top of existing page content.
            //page.SetGraphicsPosition(PdfPageGraphicsPosition.OverExistingPageContent);

            page.Graphics.SaveGraphicsState();

            PdfStringAppearanceOptions sao = new PdfStringAppearanceOptions();

            sao.Brush = redBrush;
            sao.Font  = helvetica;
            PdfStringLayoutOptions slo = new PdfStringLayoutOptions();

            slo.X        = 130;
            slo.Y        = 670;
            slo.Rotation = 60;

            // Draw the watermark over page content but setting the transparency to a value lower than 1.
            // The page content will be partially visible through the watermark.
            PdfExtendedGraphicState gs1 = new PdfExtendedGraphicState();

            gs1.FillAlpha = 0.3;
            page.Graphics.SetExtendedGraphicState(gs1);
            page.Graphics.DrawString("Sample watermark over page content", sao, slo);

            page.Graphics.RestoreGraphicsState();
        }
示例#4
0
        /// <summary>
        /// 
        /// </summary>
        /// <param name="page"></param>
        private static void DrawWatermarkWithTransparency(PdfPage page)
        {
            PdfBrush redBrush = new PdfBrush(new PdfRgbColor(192, 0, 0));
            PdfStandardFont helvetica = new PdfStandardFont(PdfStandardFontFace.HelveticaBold, 36);

            // The page graphics is located by default on top of existing page content.
            //page.SetGraphicsPosition(PdfPageGraphicsPosition.OverExistingPageContent);

            page.Graphics.SaveGraphicsState();

            PdfStringAppearanceOptions sao = new PdfStringAppearanceOptions();
            sao.Brush = redBrush;
            sao.Font = helvetica;
            PdfStringLayoutOptions slo = new PdfStringLayoutOptions();
            slo.X = 130;
            slo.Y = 670;
            slo.Rotation = 60;

            // Draw the watermark over page content but setting the transparency to a value lower than 1.
            // The page content will be partially visible through the watermark.
            PdfExtendedGraphicState gs1 = new PdfExtendedGraphicState();
            gs1.FillAlpha = 0.3;
            page.Graphics.SetExtendedGraphicState(gs1);
            page.Graphics.DrawString("Sample watermark over page content", sao, slo);

            page.Graphics.RestoreGraphicsState();
        }