112 lines
4.2 KiB
C#
Executable File
112 lines
4.2 KiB
C#
Executable File
using System;
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using System.Drawing;
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using System.Drawing.Drawing2D;
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using System.Drawing.Imaging;
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using System.IO;
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using System.Windows.Forms;
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namespace oscardata
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{
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public class Imagehandler
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{
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// Save the file with a specific compression level.
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private void SaveJpg(Image image, string file_name, long compression)
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{
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try
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{
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EncoderParameters encoder_params = new EncoderParameters(1);
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encoder_params.Param[0] = new EncoderParameter(System.Drawing.Imaging.Encoder.Quality, compression);
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ImageCodecInfo image_codec_info = GetEncoderInfo("image/jpeg");
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statics.FileDelete(file_name);
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image.Save(file_name, image_codec_info, encoder_params);
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}
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catch (Exception ex)
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{
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MessageBox.Show("Error saving file '" + file_name +
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"'\nTry a different file name.\n" + ex.Message,
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"Save Error", MessageBoxButtons.OK,
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MessageBoxIcon.Error);
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}
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}
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// Return an ImageCodecInfo object for this mime type.
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private ImageCodecInfo GetEncoderInfo(string mime_type)
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{
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ImageCodecInfo[] encoders = ImageCodecInfo.GetImageEncoders();
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for (int i = 0; i <= encoders.Length; i++)
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{
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if (encoders[i].MimeType == mime_type) return encoders[i];
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}
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return null;
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}
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// Save the file with the indicated maximum file size.
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// Return the compression level used.
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public int SaveJpgAtFileSize(Image image, string file_name, long max_size)
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{
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for (int level = 100; level > 5; level -= 5)
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{
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// Try saving at this compression level.
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SaveJpg(image, file_name, level);
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// If the file is small enough, we're done.
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if (statics.GetFileSize(file_name) <= max_size)
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return level;
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}
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return 5;
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}
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public Bitmap ResizeImage(Image image, int width, int height, String callsign, String info)
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{
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// get original size of img
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int x = image.Width;
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int y = image.Height;
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// scale the greater size to the destination size
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double relx = (double)width / (double)x;
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double rely = (double)height / (double)y;
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int nw = (int)((double)x * relx);
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int nh = (int)((double)y * relx);
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if (rely < relx)
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{
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nw = (int)((double)x * rely);
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nh = (int)((double)y * rely);
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}
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Bitmap destImage = new Bitmap(nw, nh);
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using (Graphics g = Graphics.FromImage(destImage))
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{
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g.DrawImage(image, 0, 0, nw, nh);
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if (callsign != "")
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{
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using (var fnt = new Font("Verdana", 15.0f))
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{
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var size = g.MeasureString(callsign, fnt);
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var rect = new RectangleF(5, 5, size.Width, size.Height);
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SolidBrush opaqueBrush = new SolidBrush(Color.FromArgb(128, 255, 255, 255));
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g.FillRectangle(opaqueBrush, rect);
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g.DrawString(callsign, fnt, Brushes.Blue, 5, 5);
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}
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}
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if (info != "")
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{
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using (var fnt = new Font("Verdana", 11.0f))
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{
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int ypos = nh - 30;
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var size = g.MeasureString(info, fnt);
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var rect = new RectangleF(5, ypos, size.Width, size.Height);
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SolidBrush opaqueBrush = new SolidBrush(Color.FromArgb(128, 255, 255, 255));
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g.FillRectangle(opaqueBrush, rect);
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g.DrawString(info, fnt, Brushes.Blue, 5, ypos);
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}
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}
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}
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return destImage;
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}
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}
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}
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