using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.Drawing;
using System.Data;
using System.Linq;
using System.Text;
using System.Windows.Forms;
using System.IO;

namespace ICSSoft.Frame.APP
{
    public partial class PDFviewerControl : UserControl
    {
        public PDFviewerControl()
        {
            InitializeComponent();
        }

        private void btnRotateLeft_Click(object sender, EventArgs e)
        {
            pdfViewer1.Renderer.RotateLeft();
        }

        private void btnRotateRight_Click(object sender, EventArgs e)
        {
            pdfViewer1.Renderer.RotateRight();
        }

        /// <summary>
        /// 加载pdf文件
        /// </summary>
        /// <param name="fullfilename">文件绝对路径</param>
        public void LoadFile(string fullfilename)
        {
            if (pdfViewer1.Document != null)
            {
                pdfViewer1.Document.Dispose();
            }
            pdfViewer1.Document = OpenDocument(fullfilename);
        }

        private PdfiumViewer.PdfDocument OpenDocument(string fileName)
        {
            try
            {
                MemoryStream ms = new MemoryStream();
                using (FileStream fs = new FileStream(fileName, FileMode.Open))
                {
                    fs.CopyTo(ms);
                    fs.Close();
                }
                PdfiumViewer.PdfDocument doc = PdfiumViewer.PdfDocument.Load(ms);
                return doc;
            }
            catch (Exception ex)
            {
                MessageBox.Show(this, ex.Message, Text, MessageBoxButtons.OK, MessageBoxIcon.Error);
                return null;
            }
        }

        public void Close()
        {
            if (pdfViewer1.Document != null)
            {
                pdfViewer1.Document.Dispose();
            }
            pdfViewer1.Dispose();
            this.Dispose();
        }

        private void btnPre_Click(object sender, EventArgs e)
        {
            pdfViewer1.Renderer.Page--;
        }

        private void btnNext_Click(object sender, EventArgs e)
        {
            pdfViewer1.Renderer.Page++;
        }

    }
}