101 lines
2.5 KiB
C#
101 lines
2.5 KiB
C#
using System;
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using System.Drawing;
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using System.IO;
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using System.Windows.Forms;
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namespace DesktopTools.BaseControls
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{
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/// <summary>
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/// Контрол, предоставляющий работу с изображением
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/// </summary>
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public partial class BaseControlImage : AbstractBaseControl
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{
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/// <summary>
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/// Конструктор
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/// </summary>
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/// <param name="propertyName"></param>
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/// <param name="mustFilling"></param>
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/// <param name="readOnly"></param>
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/// <param name="width"></param>
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/// <param name="height"></param>
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public BaseControlImage(string propertyName, bool mustFilling, bool readOnly, int? width, int? height) : base(propertyName, mustFilling, readOnly)
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{
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InitializeComponent();
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if (width.HasValue)
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{
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Width = width.Value;
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}
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if (height.HasValue)
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{
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Height = height.Value;
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}
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buttonLoad.Click += (object sender, EventArgs e) =>
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{
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var dialog = new OpenFileDialog();
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if (dialog.ShowDialog() == DialogResult.OK)
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{
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try
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{
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pictureBox.ClientSize = new Size(150, 150);
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pictureBox.Image = new Bitmap(dialog.FileName);
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CallOnValueChangeEvent();
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}
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catch (Exception ex)
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{
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MessageBox.Show(ex.Message, "Ошибка при загрузке файла", MessageBoxButtons.OK, MessageBoxIcon.Error);
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}
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}
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};
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panelControl.Controls.Add(pictureBox);
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}
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protected override void SetDefaultValue() => _originalValue = null;
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protected override void SetValueToControl(object value)
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{
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if (value != null)
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{
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using MemoryStream mStream = new(value as byte[]);
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pictureBox.Image = Image.FromStream(mStream);
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}
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else if (!_mustFilling)
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{
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pictureBox.Image = null;
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}
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}
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public override void DropValue()
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{
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if (_originalValue != null)
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{
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using MemoryStream mStream = new(_originalValue as byte[]);
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pictureBox.Image = Image.FromStream(mStream);
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}
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else if (!_mustFilling)
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{
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pictureBox.Image = null;
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}
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}
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public override bool CheckValue()
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{
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if (_mustFilling && pictureBox.Image == null)
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{
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BackColor = Color.OrangeRed;
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return false;
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}
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return true;
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}
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protected override object GetValueFromControl()
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{
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if (_mustFilling && pictureBox.Image == null)
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{
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throw new ArgumentNullException($"Поле свойства '{labelTitle.Text}' должно быть заполнено");
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}
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var converter = new ImageConverter();
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return (byte[])converter.ConvertTo(pictureBox.Image, typeof(byte[]));
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}
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}
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} |