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Initial move from old twain-in-dotnet.
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soukoku
372
Tests/Tester.Winform/TestForm.cs
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372
Tests/Tester.Winform/TestForm.cs
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using System;
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using System.Windows.Forms;
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using System.Linq;
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using NTwain.Data;
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using NTwain.Values;
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using NTwain.Triplets;
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using NTwain;
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using System.Diagnostics;
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using System.IO;
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using System.Drawing.Imaging;
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using System.Drawing;
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using System.Runtime.InteropServices;
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using NTwain.Values.Cap;
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using System.Collections.Generic;
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using System.Reflection;
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using CommonWin32;
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namespace Tester.Winform
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{
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sealed partial class TestForm : Form
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{
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ImageCodecInfo _tiffCodecInfo;
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TwainSession _twain;
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bool _stopScan;
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bool _loadingCaps;
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#region setup & cleanup
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public TestForm()
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{
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InitializeComponent();
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if (IntPtr.Size == 8)
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{
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Text = Text + " (64bit)";
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}
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else
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{
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Text = Text + " (32bit)";
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}
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foreach (var enc in ImageCodecInfo.GetImageEncoders())
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{
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if (enc.MimeType == "image/tiff") { _tiffCodecInfo = enc; break; }
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}
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SetupTwain();
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}
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protected override void OnFormClosing(FormClosingEventArgs e)
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{
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if (e.CloseReason == CloseReason.UserClosing && _twain.State > 4)
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{
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e.Cancel = true;
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}
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else
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{
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CleanupTwain();
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}
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base.OnFormClosing(e);
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}
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private void SetupTwain()
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{
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var appVer = FileVersionInfo.GetVersionInfo(Assembly.GetEntryAssembly().Location);
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TWIdentity appId = TWIdentity.Create(DataGroups.Image, new Version(appVer.ProductMajorPart, appVer.ProductMinorPart),
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"My Company", "Test Family", "Tester", "A TWAIN testing app.");
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_twain = new TwainSession(appId);
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_twain.DataTransferred += (s, e) =>
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{
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if (pictureBox1.Image != null)
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{
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pictureBox1.Image.Dispose();
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pictureBox1.Image = null;
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}
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if (e.Data != IntPtr.Zero)
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{
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//_ptrTest = e.Data;
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var img = e.Data.GetDrawingBitmap();
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if (img != null)
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pictureBox1.Image = img;
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}
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else if (!string.IsNullOrEmpty(e.FilePath))
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{
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var img = new Bitmap(e.FilePath);
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pictureBox1.Image = img;
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}
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};
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_twain.SourceDisabled += (s, e) =>
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{
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btnStopScan.Enabled = false;
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btnStartCapture.Enabled = true;
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panelOptions.Enabled = true;
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LoadSourceCaps();
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};
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_twain.TransferReady += (s, e) =>
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{
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e.CancelAll = _stopScan;
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};
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Application.AddMessageFilter(_twain);
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}
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private void CleanupTwain()
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{
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Application.RemoveMessageFilter(_twain);
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if (_twain.State == 4)
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{
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_twain.CloseSource();
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}
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if (_twain.State == 3)
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{
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_twain.CloseManager();
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}
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if (_twain.State > 2)
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{
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// normal close down didn't work, do hard kill
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_twain.ForceStepDown(2);
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}
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}
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#endregion
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#region toolbar
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private void btnSources_DropDownOpening(object sender, EventArgs e)
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{
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if (btnSources.DropDownItems.Count == 2)
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{
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ReloadSourceList();
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}
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}
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private void reloadSourcesListToolStripMenuItem_Click(object sender, EventArgs e)
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{
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ReloadSourceList();
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}
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void SourceMenuItem_Click(object sender, EventArgs e)
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{
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// do nothing if source is enabled
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if (_twain.State > 4) { return; }
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if (_twain.State == 4) { _twain.CloseSource(); }
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foreach (var btn in btnSources.DropDownItems)
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{
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var srcBtn = btn as ToolStripMenuItem;
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if (srcBtn != null) { srcBtn.Checked = false; }
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}
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var curBtn = (sender as ToolStripMenuItem);
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var src = curBtn.Tag as TWIdentity;
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if (_twain.OpenSource(src) == ReturnCode.Success)
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{
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curBtn.Checked = true;
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btnStartCapture.Enabled = true;
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LoadSourceCaps();
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}
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}
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private void btnStartCapture_Click(object sender, EventArgs e)
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{
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if (_twain.State == 4)
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{
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var hand = new HandleRef(this, this.Handle);
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_stopScan = false;
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if (_twain.SupportedCaps.Contains(CapabilityId.CapUIControllable))
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{
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// hide scanner ui if possible
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if (_twain.EnableSource(SourceEnableMode.NoUI, false, hand) == ReturnCode.Success)
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{
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btnStopScan.Enabled = true;
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btnStartCapture.Enabled = false;
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panelOptions.Enabled = false;
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}
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}
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else
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{
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if (_twain.EnableSource(SourceEnableMode.ShowUI, false, hand) == ReturnCode.Success)
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{
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btnStopScan.Enabled = true;
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btnStartCapture.Enabled = false;
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panelOptions.Enabled = false;
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}
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}
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}
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}
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private void btnStopScan_Click(object sender, EventArgs e)
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{
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_stopScan = true;
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}
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private void btnSaveImage_Click(object sender, EventArgs e)
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{
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var img = pictureBox1.Image;
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if (img != null)
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{
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switch (img.PixelFormat)
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{
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case PixelFormat.Format1bppIndexed:
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saveFileDialog1.Filter = "tiff files|*.tif";
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break;
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default:
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saveFileDialog1.Filter = "png files|*.png";
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break;
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}
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if (saveFileDialog1.ShowDialog() == System.Windows.Forms.DialogResult.OK)
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{
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if (saveFileDialog1.FileName.EndsWith(".tif", StringComparison.OrdinalIgnoreCase))
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{
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EncoderParameters tiffParam = new EncoderParameters(1);
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tiffParam.Param[0] = new EncoderParameter(Encoder.Compression, (long)EncoderValue.CompressionCCITT4);
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pictureBox1.Image.Save(saveFileDialog1.FileName, _tiffCodecInfo, tiffParam);
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}
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else
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{
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pictureBox1.Image.Save(saveFileDialog1.FileName, ImageFormat.Png);
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}
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}
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}
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}
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#endregion
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#region real work
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private void ReloadSourceList()
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{
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if (_twain.State < 3)
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{
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_twain.OpenManager(new HandleRef(this, this.Handle));
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}
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if (_twain.State >= 3)
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{
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while (btnSources.DropDownItems.IndexOf(sepSourceList) > 0)
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{
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var first = btnSources.DropDownItems[0];
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first.Click -= SourceMenuItem_Click;
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btnSources.DropDownItems.Remove(first);
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}
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foreach (var src in _twain.GetSources())
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{
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var srcBtn = new ToolStripMenuItem(src.ProductName);
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srcBtn.Tag = src;
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srcBtn.Click += SourceMenuItem_Click;
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srcBtn.Checked = _twain.SourceId != null && _twain.SourceId.Id == src.Id;
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btnSources.DropDownItems.Insert(0, srcBtn);
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}
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}
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}
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#region cap control
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private void LoadSourceCaps()
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{
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var caps = _twain.SupportedCaps;
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_loadingCaps = true;
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if (groupDepth.Enabled = caps.Contains(CapabilityId.ICapPixelType))
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{
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LoadDepth();
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}
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if (groupDPI.Enabled = caps.Contains(CapabilityId.ICapXResolution) && caps.Contains(CapabilityId.ICapYResolution))
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{
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LoadDPI();
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}
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// TODO: find out if this is how duplex works or also needs the other option
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if (groupDuplex.Enabled = caps.Contains(CapabilityId.CapDuplexEnabled))
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{
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LoadDuplex();
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}
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if (groupSize.Enabled = caps.Contains(CapabilityId.ICapSupportedSizes))
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{
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LoadPaperSize();
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}
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btnAllSettings.Enabled = caps.Contains(CapabilityId.CapEnableDSUIOnly);
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_loadingCaps = false;
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}
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private void LoadPaperSize()
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{
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var list = _twain.CapGetSupportedSizes();
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comboSize.DataSource = list;
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var cur = _twain.GetCurrentCap<SupportedSize>(CapabilityId.ICapSupportedSizes);
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if (list.Contains(cur))
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{
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comboSize.SelectedItem = cur;
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}
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}
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private void LoadDuplex()
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{
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ckDuplex.Checked = _twain.GetCurrentCap<uint>(CapabilityId.CapDuplexEnabled) != 0;
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}
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private void LoadDPI()
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{
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// only allow dpi of certain values for those source that lists everything
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var list = _twain.CapGetDPIs().Where(dpi => (dpi % 50) == 0).ToList();
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comboDPI.DataSource = list;
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var cur = _twain.GetCurrentCap<int>(CapabilityId.ICapXResolution);
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if (list.Contains(cur))
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{
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comboDPI.SelectedItem = cur;
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}
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}
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private void LoadDepth()
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{
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var list = _twain.CapGetPixelTypes();
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comboDepth.DataSource = list;
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var cur = _twain.GetCurrentCap<PixelType>(CapabilityId.ICapPixelType);
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if (list.Contains(cur))
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{
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comboDepth.SelectedItem = cur;
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}
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}
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private void comboSize_SelectedIndexChanged(object sender, EventArgs e)
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{
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if (!_loadingCaps && _twain.State == 4)
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{
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var sel = (SupportedSize)comboSize.SelectedItem;
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_twain.CapSetSupportedSize(sel);
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}
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}
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private void comboDepth_SelectedIndexChanged(object sender, EventArgs e)
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{
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if (!_loadingCaps && _twain.State == 4)
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{
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var sel = (PixelType)comboDepth.SelectedItem;
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_twain.CapSetPixelType(sel);
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}
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}
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private void comboDPI_SelectedIndexChanged(object sender, EventArgs e)
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{
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if (!_loadingCaps && _twain.State == 4)
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{
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var sel = (int)comboDPI.SelectedItem;
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_twain.CapSetDPI(sel);
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}
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}
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private void ckDuplex_CheckedChanged(object sender, EventArgs e)
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{
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if (!_loadingCaps && _twain.State == 4)
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{
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_twain.CapSetDuplex(ckDuplex.Checked);
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}
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}
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private void btnAllSettings_Click(object sender, EventArgs e)
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{
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var hand = new HandleRef(this, this.Handle);
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_twain.EnableSource(SourceEnableMode.ShowUIOnly, true, hand);
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}
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#endregion
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#endregion
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}
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}
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