112 lines
4.8 KiB
C#
112 lines
4.8 KiB
C#
using System.Threading.Tasks;
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using Elwig.Windows;
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using System.Diagnostics;
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using System;
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using System.IO;
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using System.Collections.Generic;
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using System.Windows;
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using System.Text.RegularExpressions;
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using System.Linq;
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using System.Net.Sockets;
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using PdfiumViewer;
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using System.Drawing.Printing;
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namespace Elwig.Helpers.Printing {
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public static class Pdf {
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private static readonly string WinziPrint = new string[] { App.ExePath }
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.Union(Environment.GetEnvironmentVariable("PATH")?.Split(';') ?? [])
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.Select(x => Path.Combine(x, "WinziPrint.exe"))
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.Where(File.Exists)
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.FirstOrDefault() ?? throw new FileNotFoundException("WiniPrint executable not found");
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private static Process? WinziPrintProc;
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public static bool IsReady => WinziPrintProc != null;
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public static async Task Init(Action? evtHandler = null) {
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// NOTE: If the WinziPrint daemon is already running this will succeed, but the process will fail.
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// Should be no problem, as long as the daemon is not closed
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var p = new Process() { StartInfo = new() {
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FileName = WinziPrint,
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CreateNoWindow = true,
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UseShellExecute = false,
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RedirectStandardOutput = true,
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} };
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p.StartInfo.ArgumentList.Add("-D");
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p.StartInfo.ArgumentList.Add("-d");
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p.StartInfo.ArgumentList.Add(App.TempPath);
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p.Start();
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await p.StandardOutput.ReadLineAsync();
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WinziPrintProc = p;
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evtHandler?.Invoke();
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}
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public static Task Cleanup() {
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WinziPrintProc?.Kill(true);
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WinziPrintProc?.Close();
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return Task.CompletedTask;
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}
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public static async Task<(int Pages, IEnumerable<int> PerDoc)> Convert(string htmlPath, string pdfPath, bool doublePaged = false, IProgress<double>? progress = null) {
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return await Convert([htmlPath], pdfPath, doublePaged, progress);
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}
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public static async Task<(int Pages, IEnumerable<int> PerDoc)> Convert(IEnumerable<string> htmlPath, string pdfPath, bool doublePaged = false, IProgress<double>? progress = null) {
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if (WinziPrintProc == null) throw new InvalidOperationException("The WinziPrint process has not been initialized yet");
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progress?.Report(0.0);
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using var client = new TcpClient("127.0.0.1", 30983);
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using var stream = client.GetStream();
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await stream.WriteAsync(Utils.UTF8.GetBytes(
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"-e utf-8;-p;" + (doublePaged ? "-2;" : "") +
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$"{string.Join(';', htmlPath)};{pdfPath}" +
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"\r\n"));
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using var reader = new StreamReader(stream);
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while (true) {
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var line = await reader.ReadLineAsync() ?? throw new IOException("Invalid response from WinziPrint");
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if (line.StartsWith("error:")) {
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throw new IOException($"WinziPrint: {line[6..].Trim()}");
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} else if (line.StartsWith("progress:")) {
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var parts = line[9..].Trim().Split('/').Select(int.Parse).ToArray();
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progress?.Report(100.0 * parts[0] / parts[1]);
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} else if (line.StartsWith("success:")) {
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var m = Regex.Match(line, @"([0-9]+) pages \(([0-9, ]+)\)");
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return (int.Parse(m.Groups[1].Value), m.Groups[2].Value.Split(", ").Select(int.Parse).ToList());
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}
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}
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}
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public static void Show(TempFile file, string title) {
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App.MainDispatcher.BeginInvoke(() => {
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var w = new DocumentViewerWindow(title, file);
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w.Show();
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});
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}
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public static void Show(string path, string title) {
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App.MainDispatcher.BeginInvoke(() => {
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var w = new DocumentViewerWindow(title, path);
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w.Show();
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});
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}
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public static async Task Print(string path, int copies = 1, bool doublePaged = false) {
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await Print(path, new() {
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Copies = (short)copies,
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Collate = true,
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Duplex = doublePaged ? Duplex.Vertical : Duplex.Simplex,
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});
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}
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public static Task Print(string path, PrinterSettings settings) {
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try {
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using var doc = PdfDocument.Load(path);
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using var printDoc = doc.CreatePrintDocument(PdfPrintMode.CutMargin);
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printDoc.PrinterSettings = settings;
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printDoc.Print();
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} catch (Exception e) {
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MessageBox.Show("Beim Drucken ist ein Fehler aufgetreten:\n\n" + e.Message, "Fehler beim Drucken", MessageBoxButton.OK, MessageBoxImage.Error);
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}
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return Task.CompletedTask;
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}
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}
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}
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