Ejemplo n.º 1
0
        private static void DrawShadings(PdfPage page, PdfFont titleFont, PdfFont sectionFont)
        {
            PdfBrush brush    = new PdfBrush();
            PdfPen   blackPen = new PdfPen(PdfRgbColor.Black, 1);

            PdfRgbColor randomPenColor   = new PdfRgbColor();
            PdfPen      randomPen        = new PdfPen(randomPenColor, 1);
            PdfRgbColor randomBrushColor = new PdfRgbColor();
            PdfBrush    randomBrush      = new PdfBrush(randomBrushColor);

            page.Graphics.DrawString("Shadings", titleFont, brush, 20, 50);

            page.Graphics.DrawString("Horizontal", sectionFont, brush, 25, 70);

            PdfAxialShading horizontalShading = new PdfAxialShading();

            horizontalShading.StartColor = new PdfRgbColor(255, 0, 0);
            horizontalShading.EndColor   = new PdfRgbColor(0, 0, 255);
            horizontalShading.StartPoint = new PdfPoint(25, 90);
            horizontalShading.EndPoint   = new PdfPoint(175, 90);

            // Clip the shading to desired area.
            PdfPath hsArea = new PdfPath();

            hsArea.AddRectangle(25, 90, 150, 150);
            page.Graphics.SaveGraphicsState();
            page.Graphics.SetClip(hsArea);
            page.Graphics.DrawShading(horizontalShading);
            page.Graphics.RestoreGraphicsState();

            page.Graphics.DrawString("Vertical", sectionFont, brush, 225, 70);

            PdfAxialShading verticalShading = new PdfAxialShading();

            verticalShading.StartColor = new PdfRgbColor(255, 0, 0);
            verticalShading.EndColor   = new PdfRgbColor(0, 0, 255);
            verticalShading.StartPoint = new PdfPoint(225, 90);
            verticalShading.EndPoint   = new PdfPoint(225, 240);

            // Clip the shading to desired area.
            PdfPath vsArea = new PdfPath();

            vsArea.AddRectangle(225, 90, 150, 150);
            page.Graphics.SaveGraphicsState();
            page.Graphics.SetClip(vsArea);
            page.Graphics.DrawShading(verticalShading);
            page.Graphics.RestoreGraphicsState();

            page.Graphics.DrawString("Diagonal", sectionFont, brush, 425, 70);

            PdfAxialShading diagonalShading = new PdfAxialShading();

            diagonalShading.StartColor = new PdfRgbColor(255, 0, 0);
            diagonalShading.EndColor   = new PdfRgbColor(0, 0, 255);
            diagonalShading.StartPoint = new PdfPoint(425, 90);
            diagonalShading.EndPoint   = new PdfPoint(575, 240);

            // Clip the shading to desired area.
            PdfPath dsArea = new PdfPath();

            dsArea.AddRectangle(425, 90, 150, 150);
            page.Graphics.SaveGraphicsState();
            page.Graphics.SetClip(dsArea);
            page.Graphics.DrawShading(diagonalShading);
            page.Graphics.RestoreGraphicsState();

            page.Graphics.DrawString("Extended shading", sectionFont, brush, 25, 260);

            PdfAxialShading extendedShading = new PdfAxialShading();

            extendedShading.StartColor  = new PdfRgbColor(255, 0, 0);
            extendedShading.EndColor    = new PdfRgbColor(0, 0, 255);
            extendedShading.StartPoint  = new PdfPoint(225, 280);
            extendedShading.EndPoint    = new PdfPoint(375, 280);
            extendedShading.ExtendStart = true;
            extendedShading.ExtendEnd   = true;

            // Clip the shading to desired area.
            PdfPath esArea = new PdfPath();

            esArea.AddRectangle(25, 280, 550, 30);
            page.Graphics.SaveGraphicsState();
            page.Graphics.SetClip(esArea);
            page.Graphics.DrawShading(extendedShading);
            page.Graphics.RestoreGraphicsState();
            page.Graphics.DrawPath(blackPen, esArea);

            page.Graphics.DrawString("Limited shading", sectionFont, brush, 25, 330);

            PdfAxialShading limitedShading = new PdfAxialShading();

            limitedShading.StartColor  = new PdfRgbColor(255, 0, 0);
            limitedShading.EndColor    = new PdfRgbColor(0, 0, 255);
            limitedShading.StartPoint  = new PdfPoint(225, 350);
            limitedShading.EndPoint    = new PdfPoint(375, 350);
            limitedShading.ExtendStart = false;
            limitedShading.ExtendEnd   = false;

            // Clip the shading to desired area.
            PdfPath lsArea = new PdfPath();

            lsArea.AddRectangle(25, 350, 550, 30);
            page.Graphics.SaveGraphicsState();
            page.Graphics.SetClip(lsArea);
            page.Graphics.DrawShading(limitedShading);
            page.Graphics.RestoreGraphicsState();
            page.Graphics.DrawPath(blackPen, lsArea);

            page.Graphics.DrawString("Multi-stop shading", sectionFont, brush, 25, 400);
            // Multi-stop shadings use a stitching function to combine the functions that define each gradient part.
            // Function for red to blue shading.
            PdfExponentialFunction redToBlueFunc = new PdfExponentialFunction();

            // Linear function
            redToBlueFunc.Exponent = 1;
            redToBlueFunc.Domain   = new double[] { 0, 1 };
            // Red color for start
            redToBlueFunc.C0 = new double[] { 1, 0, 0 };
            // Blue color for start
            redToBlueFunc.C1 = new double[] { 0, 0, 1 };
            // Function for blue to green shading.
            PdfExponentialFunction blueToGreenFunc = new PdfExponentialFunction();

            // Linear function
            blueToGreenFunc.Exponent = 1;
            blueToGreenFunc.Domain   = new double[] { 0, 1 };
            // Blue color for start
            blueToGreenFunc.C0 = new double[] { 0, 0, 1 };
            // Green color for start
            blueToGreenFunc.C1 = new double[] { 0, 1, 0 };

            //Stitching function for the shading.
            PdfStitchingFunction shadingFunction = new PdfStitchingFunction();

            shadingFunction.Functions.Add(redToBlueFunc);
            shadingFunction.Functions.Add(blueToGreenFunc);
            shadingFunction.Domain = new double[] { 0, 1 };
            shadingFunction.Encode = new double[] { 0, 1, 0, 1 };

            // Entire shading goes from 0 to 1 (100%).
            // We set the first shading (red->blue) to cover 30% (0 - 0.3) and
            // the second shading to cover 70% (0.3 - 1).
            shadingFunction.Bounds = new double[] { 0.3 };
            // The multistop shading
            PdfAxialShading multiStopShading = new PdfAxialShading();

            multiStopShading.StartPoint = new PdfPoint(25, 420);
            multiStopShading.EndPoint   = new PdfPoint(575, 420);
            // The colorspace must match the colors specified in C0 & C1
            multiStopShading.ColorSpace = new PdfRgbColorSpace();
            multiStopShading.Function   = shadingFunction;

            // Clip the shading to desired area.
            PdfPath mssArea = new PdfPath();

            mssArea.AddRectangle(25, 420, 550, 30);
            page.Graphics.SaveGraphicsState();
            page.Graphics.SetClip(mssArea);
            page.Graphics.DrawShading(multiStopShading);
            page.Graphics.RestoreGraphicsState();
            page.Graphics.DrawPath(blackPen, lsArea);

            page.Graphics.DrawString("Radial shading", sectionFont, brush, 25, 470);

            PdfRadialShading rs1 = new PdfRadialShading();

            rs1.StartColor        = new PdfRgbColor(0, 255, 0);
            rs1.EndColor          = new PdfRgbColor(255, 0, 255);
            rs1.StartCircleCenter = new PdfPoint(50, 500);
            rs1.StartCircleRadius = 10;
            rs1.EndCircleCenter   = new PdfPoint(500, 570);
            rs1.EndCircleRadius   = 100;

            page.Graphics.DrawShading(rs1);

            PdfRadialShading rs2 = new PdfRadialShading();

            rs2.StartColor        = new PdfRgbColor(0, 255, 0);
            rs2.EndColor          = new PdfRgbColor(255, 0, 255);
            rs2.StartCircleCenter = new PdfPoint(80, 600);
            rs2.StartCircleRadius = 10;
            rs2.EndCircleCenter   = new PdfPoint(110, 690);
            rs2.EndCircleRadius   = 100;

            page.Graphics.DrawShading(rs2);

            page.Graphics.CompressAndClose();
        }
Ejemplo n.º 2
0
        private static void DrawShadings(PdfPage page, PdfFont titleFont, PdfFont sectionFont)
        {
            PdfBrush brush = new PdfBrush();
            PdfPen blackPen = new PdfPen(PdfRgbColor.Black, 1);

            PdfRgbColor randomPenColor = new PdfRgbColor();
            PdfPen randomPen = new PdfPen(randomPenColor, 1);
            PdfRgbColor randomBrushColor = new PdfRgbColor();
            PdfBrush randomBrush = new PdfBrush(randomBrushColor);

            page.Graphics.DrawString("Shadings", titleFont, brush, 20, 50);

            page.Graphics.DrawString("Horizontal", sectionFont, brush, 25, 70);

            PdfAxialShading horizontalShading = new PdfAxialShading();
            horizontalShading.StartColor = new PdfRgbColor(255, 0, 0);
            horizontalShading.EndColor = new PdfRgbColor(0, 0, 255);
            horizontalShading.StartPoint = new PdfPoint(25, 90);
            horizontalShading.EndPoint = new PdfPoint(175, 90);

            // Clip the shading to desired area.
            PdfPath hsArea = new PdfPath();
            hsArea.AddRectangle(25, 90, 150, 150);
            page.Graphics.SaveGraphicsState();
            page.Graphics.SetClip(hsArea);
            page.Graphics.DrawShading(horizontalShading);
            page.Graphics.RestoreGraphicsState();

            page.Graphics.DrawString("Vertical", sectionFont, brush, 225, 70);

            PdfAxialShading verticalShading = new PdfAxialShading();
            verticalShading.StartColor = new PdfRgbColor(255, 0, 0);
            verticalShading.EndColor = new PdfRgbColor(0, 0, 255);
            verticalShading.StartPoint = new PdfPoint(225, 90);
            verticalShading.EndPoint = new PdfPoint(225, 240);

            // Clip the shading to desired area.
            PdfPath vsArea = new PdfPath();
            vsArea.AddRectangle(225, 90, 150, 150);
            page.Graphics.SaveGraphicsState();
            page.Graphics.SetClip(vsArea);
            page.Graphics.DrawShading(verticalShading);
            page.Graphics.RestoreGraphicsState();

            page.Graphics.DrawString("Diagonal", sectionFont, brush, 425, 70);

            PdfAxialShading diagonalShading = new PdfAxialShading();
            diagonalShading.StartColor = new PdfRgbColor(255, 0, 0);
            diagonalShading.EndColor = new PdfRgbColor(0, 0, 255);
            diagonalShading.StartPoint = new PdfPoint(425, 90);
            diagonalShading.EndPoint = new PdfPoint(575, 240);

            // Clip the shading to desired area.
            PdfPath dsArea = new PdfPath();
            dsArea.AddRectangle(425, 90, 150, 150);
            page.Graphics.SaveGraphicsState();
            page.Graphics.SetClip(dsArea);
            page.Graphics.DrawShading(diagonalShading);
            page.Graphics.RestoreGraphicsState();

            page.Graphics.DrawString("Extended shading", sectionFont, brush, 25, 260);

            PdfAxialShading extendedShading = new PdfAxialShading();
            extendedShading.StartColor = new PdfRgbColor(255, 0, 0);
            extendedShading.EndColor = new PdfRgbColor(0, 0, 255);
            extendedShading.StartPoint = new PdfPoint(225, 280);
            extendedShading.EndPoint = new PdfPoint(375, 280);
            extendedShading.ExtendStart = true;
            extendedShading.ExtendEnd = true;

            // Clip the shading to desired area.
            PdfPath esArea = new PdfPath();
            esArea.AddRectangle(25, 280, 550, 30);
            page.Graphics.SaveGraphicsState();
            page.Graphics.SetClip(esArea);
            page.Graphics.DrawShading(extendedShading);
            page.Graphics.RestoreGraphicsState();
            page.Graphics.DrawPath(blackPen, esArea);

            page.Graphics.DrawString("Limited shading", sectionFont, brush, 25, 330);

            PdfAxialShading limitedShading = new PdfAxialShading();
            limitedShading.StartColor = new PdfRgbColor(255, 0, 0);
            limitedShading.EndColor = new PdfRgbColor(0, 0, 255);
            limitedShading.StartPoint = new PdfPoint(225, 350);
            limitedShading.EndPoint = new PdfPoint(375, 350);
            limitedShading.ExtendStart = false;
            limitedShading.ExtendEnd = false;

            // Clip the shading to desired area.
            PdfPath lsArea = new PdfPath();
            lsArea.AddRectangle(25, 350, 550, 30);
            page.Graphics.SaveGraphicsState();
            page.Graphics.SetClip(lsArea);
            page.Graphics.DrawShading(limitedShading);
            page.Graphics.RestoreGraphicsState();
            page.Graphics.DrawPath(blackPen, lsArea);

            page.Graphics.DrawString("Multi-stop shading", sectionFont, brush, 25, 400);
            // Multi-stop shadings use a stitching function to combine the functions that define each gradient part.
            // Function for red to blue shading.
            PdfExponentialFunction redToBlueFunc = new PdfExponentialFunction();
            // Linear function
            redToBlueFunc.Exponent = 1;
            redToBlueFunc.Domain = new double[] { 0, 1 };
            // Red color for start
            redToBlueFunc.C0 = new double[] { 1, 0, 0 };
            // Blue color for start
            redToBlueFunc.C1 = new double[] { 0, 0, 1 };
            // Function for blue to green shading.
            PdfExponentialFunction blueToGreenFunc = new PdfExponentialFunction();
            // Linear function
            blueToGreenFunc.Exponent = 1;
            blueToGreenFunc.Domain = new double[] { 0, 1 };
            // Blue color for start
            blueToGreenFunc.C0 = new double[] { 0, 0, 1 };
            // Green color for start
            blueToGreenFunc.C1 = new double[] { 0, 1, 0 };

            //Stitching function for the shading.
            PdfStitchingFunction shadingFunction = new PdfStitchingFunction();
            shadingFunction.Functions.Add(redToBlueFunc);
            shadingFunction.Functions.Add(blueToGreenFunc);
            shadingFunction.Domain = new double[] { 0, 1 };
            shadingFunction.Encode = new double[] { 0, 1, 0, 1 };

            // Entire shading goes from 0 to 1 (100%).
            // We set the first shading (red->blue) to cover 30% (0 - 0.3) and
            // the second shading to cover 70% (0.3 - 1).
            shadingFunction.Bounds = new double[] { 0.3 };
            // The multistop shading
            PdfAxialShading multiStopShading = new PdfAxialShading();
            multiStopShading.StartPoint = new PdfPoint(25, 420);
            multiStopShading.EndPoint = new PdfPoint(575, 420);
            // The colorspace must match the colors specified in C0 & C1
            multiStopShading.ColorSpace = new PdfRgbColorSpace();
            multiStopShading.Function = shadingFunction;

            // Clip the shading to desired area.
            PdfPath mssArea = new PdfPath();
            mssArea.AddRectangle(25, 420, 550, 30);
            page.Graphics.SaveGraphicsState();
            page.Graphics.SetClip(mssArea);
            page.Graphics.DrawShading(multiStopShading);
            page.Graphics.RestoreGraphicsState();
            page.Graphics.DrawPath(blackPen, lsArea);

            page.Graphics.DrawString("Radial shading", sectionFont, brush, 25, 470);

            PdfRadialShading rs1 = new PdfRadialShading();
            rs1.StartColor = new PdfRgbColor(0, 255, 0);
            rs1.EndColor = new PdfRgbColor(255, 0, 255);
            rs1.StartCircleCenter = new PdfPoint(50, 500);
            rs1.StartCircleRadius = 10;
            rs1.EndCircleCenter = new PdfPoint(500, 570);
            rs1.EndCircleRadius = 100;

            page.Graphics.DrawShading(rs1);

            PdfRadialShading rs2 = new PdfRadialShading();
            rs2.StartColor = new PdfRgbColor(0, 255, 0);
            rs2.EndColor = new PdfRgbColor(255, 0, 255);
            rs2.StartCircleCenter = new PdfPoint(80, 600);
            rs2.StartCircleRadius = 10;
            rs2.EndCircleCenter = new PdfPoint(110, 690);
            rs2.EndCircleRadius = 100;

            page.Graphics.DrawShading(rs2);

            page.Graphics.CompressAndClose();
        }