HistogramUserControl.cs
Description du code
HistogramUserControl.cs est un fichier du projet PhotoBrol.Ce fichier est situé dans /var/www/bin/sniplets/bibliobrol/photobrol/.
Projet PhotoBrol :
Editeur d'images en CSharp.
Code source ou contenu du fichier
Code c# (HistogramUserControl.cs) (196 lignes)
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 be.gaudry.photobrol.view.controls.histogram; using be.gaudry.model.config; namespace be.gaudry.photobrol.view.controls { public partial class HistogramUserControl : UserControl { private int currentImageHash = 0; private static Color[] colors; private ImageStatistics stat; private be.gaudry.model.math.Histogram activeHistogram; public HistogramUserControl() { Color.FromArgb(192, 0, 0), Color.FromArgb(0, 192, 0), Color.FromArgb(0, 0, 192), Color.FromArgb(128, 128, 128), }; activeHistogram = null; InitializeComponent(); "Histogrammes", this.Name, "http://www.cst.fr/IMG/pdf/Les_mesures_sur_les_images_numeriques.pdf", "Informations sur les histogrammes" ) ); } // Gather image statistics public void GatherStatistics(Bitmap image) { // avoid calculation in the case of the same image if (image != null) { if (currentImageHash == image.GetHashCode()) return; currentImageHash = image.GetHashCode(); } if (image != null) System.Diagnostics.Debug.WriteLine("=== Gathering histogram"); // busy Capture = true; Cursor = Cursors.WaitCursor; // get statistics // free Cursor = Cursors.Arrow; Capture = false; // clean combo channelCombo.Items.Clear(); channelCombo.Enabled = false; if (stat != null) { if (!stat.IsGrayscale) { // RGB picture channelCombo.Enabled = true; } else { // grayscale picture channelCombo.Items.Add("Gris"); } channelCombo.SelectedIndex = 0; } else { histogram.Values = null; meanLabel.Text = String.Empty; stdDevLabel.Text = String.Empty; medianLabel.Text = String.Empty; minLabel.Text = String.Empty; maxLabel.Text = String.Empty; levelLabel.Text = String.Empty; countLabel.Text = String.Empty; percentileLabel.Text = String.Empty; } } // selection changed in channels combo private void channelCombo_SelectedIndexChanged(object sender, System.EventArgs e) { if (stat != null) { SwitchChannel((stat.IsGrayscale) ? 3 : channelCombo.SelectedIndex); } } // Switch channel public void SwitchChannel(int channel) { if ((channel >= 0) && (channel <= 2)) { if (!stat.IsGrayscale) { histogram.Color = colors[channel]; activeHistogram = (channel == 0) ? stat.Red : (channel == 1) ? stat.Green : stat.Blue; } } else if (channel == 3) { if (stat.IsGrayscale) { histogram.Color = colors[3]; activeHistogram = stat.Gray; } } if (activeHistogram != null) { histogram.Values = activeHistogram.Values; meanLabel.Text = activeHistogram.Mean.ToString("F2"); stdDevLabel.Text = activeHistogram.StdDev.ToString("F2"); medianLabel.Text = activeHistogram.Median.ToString(); minLabel.Text = activeHistogram.Min.ToString(); maxLabel.Text = activeHistogram.Max.ToString(); } } // Cursor position changed over the histogram private void histogram_PositionChanged(object sender, HistogramEventArgs e) { int pos = e.Position; if (pos != -1) { levelLabel.Text = pos.ToString(); if(pos<activeHistogram.Values.Length) countLabel.Text = activeHistogram.Values[pos].ToString(); percentileLabel.Text = ((float)activeHistogram.Values[pos] * 100 / stat.PixelsCount).ToString("F2"); } else { levelLabel.Text = ""; countLabel.Text = ""; percentileLabel.Text = ""; } } // Selection changed in the histogram private void histogram_SelectionChanged(object sender, HistogramEventArgs e) { int min = e.Min; int max = e.Max; int count = 0; levelLabel.Text = min.ToString() + "..." + max.ToString(); // count pixels for (int i = min; i <= max; i++) { count += activeHistogram.Values[i]; } countLabel.Text = count.ToString(); percentileLabel.Text = ((float)count * 100 / stat.PixelsCount).ToString("F2"); } // On "Log" check - switch mode private void logCheck_CheckedChanged(object sender, System.EventArgs e) { } private void histogram_MouseEnter(object sender, EventArgs e) { mouseOverInfoLbl.Visible = false; } private void histogram_MouseLeave(object sender, EventArgs e) { mouseOverInfoLbl.Visible = true; } } }
Structure et Fichiers du projet
Afficher/masquer...Icône | Nom | Taille | Modification |
Icône | Nom | Taille | Modification |
| _ | Répertoire parent | 0 octets | 1732282110 22/11/2024 14:28:30 |
| _ | histogram | 0 octets | 1541007196 31/10/2018 18:33:16 |
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English translation
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Document created the 30/10/2009, last modified the 26/10/2018
Source of the printed document:https://www.gaudry.be/en/cs-photobrol-source-rf-view/controls//HistogramUserControl.cs.html
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