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Add net5.0-windows build on x86 apps for now.
This commit is contained in:
Eugene Wang
421
samples/Sample.Net5Winform/TestForm.cs
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421
samples/Sample.Net5Winform/TestForm.cs
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using NTwain;
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using NTwain.Data;
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using System;
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using System.Diagnostics;
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using System.Drawing;
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using System.Drawing.Imaging;
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using System.Linq;
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using System.Reflection;
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using System.Threading;
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using System.Windows.Forms;
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namespace Sample.Net5Winform
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{
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public 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 (NTwain.PlatformInfo.Current.IsApp64Bit)
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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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}
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protected override void OnHandleCreated(EventArgs e)
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{
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base.OnHandleCreated(e);
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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 (_twain != null)
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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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}
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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 appId = TWIdentity.CreateFromAssembly(DataGroups.Image, Assembly.GetEntryAssembly());
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_twain = new TwainSession(appId);
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_twain.StateChanged += (s, e) =>
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{
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PlatformInfo.Current.Log.Info("State changed to " + _twain.State + " on thread " + Thread.CurrentThread.ManagedThreadId);
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};
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_twain.TransferError += (s, e) =>
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{
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PlatformInfo.Current.Log.Info("Got xfer error on thread " + Thread.CurrentThread.ManagedThreadId);
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};
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_twain.DataTransferred += (s, e) =>
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{
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PlatformInfo.Current.Log.Info("Transferred data event on thread " + Thread.CurrentThread.ManagedThreadId);
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// example on getting ext image info
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var infos = e.GetExtImageInfo(ExtendedImageInfo.Camera).Where(it => it.ReturnCode == ReturnCode.Success);
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foreach (var it in infos)
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{
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var values = it.ReadValues();
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PlatformInfo.Current.Log.Info(string.Format("{0} = {1}", it.InfoID, values.FirstOrDefault()));
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break;
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}
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// handle image data
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Image img = null;
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if (e.NativeData != IntPtr.Zero)
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{
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var stream = e.GetNativeImageStream();
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if (stream != null)
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{
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img = Image.FromStream(stream);
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}
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}
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else if (!string.IsNullOrEmpty(e.FileDataPath))
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{
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img = new Bitmap(e.FileDataPath);
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}
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if (img != null)
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{
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this.BeginInvoke(new Action(() =>
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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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pictureBox1.Image = img;
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}));
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}
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};
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_twain.SourceDisabled += (s, e) =>
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{
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PlatformInfo.Current.Log.Info("Source disabled event on thread " + Thread.CurrentThread.ManagedThreadId);
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this.BeginInvoke(new Action(() =>
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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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};
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_twain.TransferReady += (s, e) =>
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{
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PlatformInfo.Current.Log.Info("Transferr ready event on thread " + Thread.CurrentThread.ManagedThreadId);
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e.CancelAll = _stopScan;
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};
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// either set sync context and don't worry about threads during events,
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// or don't and use control.invoke during the events yourself
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PlatformInfo.Current.Log.Info("Setup thread = " + Thread.CurrentThread.ManagedThreadId);
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_twain.SynchronizationContext = SynchronizationContext.Current;
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if (_twain.State < 3)
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{
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// use this for internal msg loop
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_twain.Open();
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// use this to hook into current app loop
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//_twain.Open(new WindowsFormsMessageLoopHook(this.Handle));
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}
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}
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private void CleanupTwain()
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{
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if (_twain.State == 4)
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{
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_twain.CurrentSource.Close();
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}
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if (_twain.State == 3)
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{
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_twain.Close();
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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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private void ReloadSourceList()
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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)
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{
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var srcBtn = new ToolStripMenuItem(src.Name);
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srcBtn.Tag = src;
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srcBtn.Click += SourceMenuItem_Click;
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srcBtn.Checked = _twain.CurrentSource != null && _twain.CurrentSource.Name == src.Name;
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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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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.CurrentSource.Close(); }
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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 DataSource;
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if (src.Open() == 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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//_twain.CurrentSource.CapXferCount.Set(4);
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_stopScan = false;
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if (_twain.CurrentSource.Capabilities.CapUIControllable.IsSupported)//.SupportedCaps.Contains(CapabilityId.CapUIControllable))
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{
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// hide scanner ui if possible
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if (_twain.CurrentSource.Enable(SourceEnableMode.NoUI, false, this.Handle) == 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.CurrentSource.Enable(SourceEnableMode.ShowUI, true, this.Handle) == 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 cap control
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private void LoadSourceCaps()
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{
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var src = _twain.CurrentSource;
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_loadingCaps = true;
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//var test = src.SupportedCaps;
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if (groupDepth.Enabled = src.Capabilities.ICapPixelType.IsSupported)
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{
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LoadDepth(src.Capabilities.ICapPixelType);
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}
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if (groupDPI.Enabled = src.Capabilities.ICapXResolution.IsSupported && src.Capabilities.ICapYResolution.IsSupported)
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{
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LoadDPI(src.Capabilities.ICapXResolution);
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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 = src.Capabilities.CapDuplexEnabled.IsSupported)
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{
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LoadDuplex(src.Capabilities.CapDuplexEnabled);
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}
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if (groupSize.Enabled = src.Capabilities.ICapSupportedSizes.IsSupported)
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{
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LoadPaperSize(src.Capabilities.ICapSupportedSizes);
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}
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btnAllSettings.Enabled = src.Capabilities.CapEnableDSUIOnly.IsSupported;
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_loadingCaps = false;
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}
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private void LoadPaperSize(ICapWrapper<SupportedSize> cap)
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{
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var list = cap.GetValues().ToList();
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comboSize.DataSource = list;
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var cur = cap.GetCurrent();
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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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var labelTest = cap.GetLabel();
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if (!string.IsNullOrEmpty(labelTest))
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{
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groupSize.Text = labelTest;
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}
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}
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private void LoadDuplex(ICapWrapper<BoolType> cap)
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{
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ckDuplex.Checked = cap.GetCurrent() == BoolType.True;
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}
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private void LoadDPI(ICapWrapper<TWFix32> cap)
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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 = cap.GetValues().Where(dpi => (dpi % 50) == 0).ToList();
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comboDPI.DataSource = list;
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var cur = cap.GetCurrent();
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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(ICapWrapper<PixelType> cap)
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{
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var list = cap.GetValues().ToList();
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comboDepth.DataSource = list;
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var cur = cap.GetCurrent();
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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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var labelTest = cap.GetLabel();
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if (!string.IsNullOrEmpty(labelTest))
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{
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groupDepth.Text = labelTest;
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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.CurrentSource.Capabilities.ICapSupportedSizes.SetValue(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.CurrentSource.Capabilities.ICapPixelType.SetValue(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 = (TWFix32)comboDPI.SelectedItem;
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_twain.CurrentSource.Capabilities.ICapXResolution.SetValue(sel);
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_twain.CurrentSource.Capabilities.ICapYResolution.SetValue(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.CurrentSource.Capabilities.CapDuplexEnabled.SetValue(ckDuplex.Checked ? BoolType.True : BoolType.False);
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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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_twain.CurrentSource.Enable(SourceEnableMode.ShowUIOnly, true, this.Handle);
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}
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#endregion
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}
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}
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Reference in New Issue
Block a user