CompressJpegUserControl.cs

using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.Drawing;
using System.Data;
using System.Text;
using System.Windows.Forms;
using be.gaudry.photobrol.model.image;
using System.IO;
using System.Drawing.Imaging;
using be.gaudry.model.drawing;
using be.gaudry.model;
 
namespace be.gaudry.photobrol.view.controls
{
    public partial class CompressJpegUserControl : UserControl
    {
        private MemoryStream liveBitmap;
        private ImageCodecInfo encoderInfo;
        private System.Drawing.Imaging.Encoder encoder = System.Drawing.Imaging.Encoder.Quality;
        private BrolImage brolImage;
        public CompressJpegUserControl()
        {
            InitializeComponent();
            encoderInfo = PhotoBrolImage.GetEncoderInfo("image/jpeg");
        }
        [
        DefaultValue(typeof(int), "50"),
        Browsable(true)
        ]
        public int Compression
        {
            get { return 100 - compressionTrkB.Value; }
            set
            {
                int i = value;
                if (i > 100) i = 100;
                if (i < 0) i = 0;
                compressionTrkB.Value = 100 - i;
                setCompressInfos();
            }
        }
        [Browsable(true)]
        public BrolImage ImageToCompress
        {
            get { return brolImage; }
            set
            {
                if (value != null)
                {
                    brolImage = value;
                    inputPB.Image = value.Image;
                    Bitmap bmpDest = new Bitmap(inputPB.Image, inputPB.Image.PhysicalDimension.ToSize());
                    outputPB.Image = (Image)bmpDest;
 
                    inputImageWeightLbl.Text = String.Format("Image de départ : {0}", brolImage.Weight);
                    /*try
                    {
                        liveBitmap = new MemoryStream();
                        inputPB.Image.Save(liveBitmap, inputPB.Image.RawFormat);
                        inputImageWeightLbl.Text = String.Format("Image de départ : {0}", Units.getLengthString(liveBitmap.Length));
                    }
                    catch(ArgumentNullException)
                    {
                        //save a modified bitmap
                        //ArgumentNullException because the rawformat contains no encoder
                        inputImageWeightLbl.Text = String.Format("Image en mémoire : {0}", BrolFile.getWeightString(inputPB.Image));
                    }*/
                    setCompressInfos();
                }
            }
        }
        [Browsable(false)]
        public Bitmap ImageCompressed
        {
            get { return (Bitmap)outputPB.Image; }
        }
        private void compress_Scroll(object sender, EventArgs e)
        {
            if (inputPB.Image != null)
            {
                setCompressInfos();
            }
        }
        private void setCompressInfos()
        {
            compressionLbl.Text = String.Format("{0}%", compressionTrkB.Value);
            if (inputPB.Image == null)
                return;
            try
            {
                EncoderParameter ep = new EncoderParameter(encoder, Compression);
                EncoderParameters eps = new EncoderParameters(1);
                eps.Param[0] = ep;
                liveBitmap = new MemoryStream();
                inputPB.Image.Save(liveBitmap, encoderInfo, eps);
                outputPB.Image = System.Drawing.Image.FromStream(liveBitmap);
                outputImageLbl.Text = String.Format("Image à sauver : {0}", Units.getLengthString(liveBitmap.Length));
            }
            catch (Exception e)
            {
                MessageBox.Show(e.ToString());
            }
        }
    }
}