PDF Mosaic: How to save and restore graphics state - Two Pilots

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This sample shows how to save and restore graphics state using PDFCanvas.SaveGraphicsState and PdfCanvas.RestoreGraphicsState methods.

Saving and restoring graphics state using PDFCanvas.SaveGraphicsState and PdfCanvas.RestoreGraphicsState methods

C# :

using PDFMosaic;
using System.Drawing;
using System;
 
namespace GraphicsState
{
    class GraphicssState
    {
        static void Main()
        {
            PDFDocument document = new PDFDocument();
            document.Pages.Add(new PDFPage(PDFPaperFormat.A4));
            PDFCanvas canvas = document.Pages[0].Canvas;
 
            canvas.SaveGraphicsState();
            PDFPath path = new PDFPath();
            path.AddCircle(100, 100, 50);
            canvas.SetClip(path);
            canvas.DrawRectangle(new PDFSolidBrush(new PDFColorRGB(0, 255, 0)), 50, 50, 50, 50);
            canvas.RestoreGraphicsState();
            canvas.DrawRectangle(new PDFSolidBrush(new PDFColorRGB(255, 0, 0)), 100, 50, 50, 50);
 
            document.Save(“GraphicsState.pdf”, true);
        }
    }
}

Visial Basic.NET :

Imports PDFMosaic
Imports System.Drawing
Imports System
 
Module GraphicsState
    Sub Main()
        Dim document As PDFDocument = New PDFDocument()
        document.Pages.Add(New PDFPage(PDFPaperFormat.A4))
        Dim canvas As PDFCanvas = document.Pages(0).Canvas
 
        canvas.SaveGraphicsState()
        Dim path As PDFPath = New PDFPath()
        path.AddCircle(100, 100, 50)
        canvas.SetClip(path)
        canvas.DrawRectangle(New PDFSolidBrush(New PDFColorRGB(0, 255, 0)), 50, 50, 50, 50)
        canvas.RestoreGraphicsState()
        canvas.DrawRectangle(New PDFSolidBrush(New PDFColorRGB(255, 0, 0)), 100, 50, 50, 50)
 
        document.Save(“GraphicsState.pdf”, True)
    End Sub
End Module

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