Hal Canary | c7a4665 | 2016-10-17 11:52:40 -0400 | [diff] [blame] | 1 | /* |
| 2 | * Copyright 2016 Google Inc. |
| 3 | * |
| 4 | * Use of this source code is governed by a BSD-style license that can be |
| 5 | * found in the LICENSE file. |
| 6 | */ |
| 7 | |
| 8 | /* |
| 9 | Compile with: |
| 10 | |
| 11 | "...../csc" \ |
| 12 | /lib:"....." \ |
| 13 | /reference:"ReachFramework.dll" \ |
| 14 | /reference:"WindowsBase.dll" \ |
| 15 | /reference:"PresentationCore.dll" \ |
| 16 | /reference:"PresentationFramework.dll" \ |
| 17 | xps_to_png.cs |
| 18 | |
| 19 | */ |
| 20 | // logic inspired by this example: https://goo.gl/nCxrjQ |
| 21 | class Program { |
| 22 | static int ceil(double x) { return (int)System.Math.Ceiling(x); } |
| 23 | static void convert(double dpi, string path, string out_path) { |
| 24 | double scale = dpi / 96.0; |
| 25 | System.Windows.Xps.Packaging.XpsDocument xpsDoc = |
| 26 | new System.Windows.Xps.Packaging.XpsDocument( |
| 27 | path, System.IO.FileAccess.Read); |
| 28 | if (xpsDoc == null) { |
| 29 | throw new System.Exception("XpsDocumentfailed"); |
| 30 | } |
| 31 | System.Windows.Documents.FixedDocumentSequence docSeq = |
| 32 | xpsDoc.GetFixedDocumentSequence(); |
| 33 | if (docSeq == null) { |
| 34 | throw new System.Exception("GetFixedDocumentSequence failed"); |
| 35 | } |
| 36 | System.Windows.Documents.DocumentReferenceCollection drc = docSeq.References; |
| 37 | int index = 0; |
| 38 | foreach (System.Windows.Documents.DocumentReference dr in drc) { |
| 39 | System.Windows.Documents.FixedDocument dp = dr.GetDocument(false); |
| 40 | foreach (System.Windows.Documents.PageContent pc in dp.Pages) { |
| 41 | System.Windows.Documents.FixedPage fixedPage = pc.GetPageRoot(false); |
| 42 | double width = fixedPage.Width; |
| 43 | double height = fixedPage.Height; |
| 44 | System.Windows.Size sz = new System.Windows.Size(width, height); |
| 45 | fixedPage.Measure(sz); |
| 46 | fixedPage.Arrange( |
| 47 | new System.Windows.Rect(new System.Windows.Point(), sz)); |
| 48 | fixedPage.UpdateLayout(); |
| 49 | System.Windows.Media.Imaging.BitmapImage bitmap = |
| 50 | new System.Windows.Media.Imaging.BitmapImage(); |
| 51 | System.Windows.Media.Imaging.RenderTargetBitmap renderTarget = |
| 52 | new System.Windows.Media.Imaging.RenderTargetBitmap( |
| 53 | ceil(scale * width), ceil(scale * height), dpi, dpi, |
| 54 | System.Windows.Media.PixelFormats.Default); |
| 55 | renderTarget.Render(fixedPage); |
| 56 | System.Windows.Media.Imaging.BitmapEncoder encoder = |
| 57 | new System.Windows.Media.Imaging.PngBitmapEncoder(); |
| 58 | encoder.Frames.Add( |
| 59 | System.Windows.Media.Imaging.BitmapFrame.Create(renderTarget)); |
| 60 | string filename = string.Format("{0}_{1}.png", out_path, index); |
| 61 | System.IO.FileStream pageOutStream = new System.IO.FileStream( |
| 62 | filename, System.IO.FileMode.Create, System.IO.FileAccess.Write); |
| 63 | encoder.Save(pageOutStream); |
| 64 | pageOutStream.Close(); |
| 65 | System.Console.WriteLine(filename); |
| 66 | ++index; |
| 67 | } |
| 68 | } |
| 69 | } |
| 70 | // Executes convert, catching thrown exceptions, and printing them |
| 71 | // to stdout, and exiting immediately. |
| 72 | static void try_convert(double dpi, string path, string out_path) { |
| 73 | try { |
| 74 | convert(dpi, path, out_path); |
| 75 | } catch (System.Exception e) { |
| 76 | System.Console.WriteLine(e); |
| 77 | System.Environment.Exit(1); |
| 78 | } |
| 79 | } |
| 80 | // For each command line argument, convert xps to sequence of pngs. |
| 81 | static void Main(string[] args) { |
Hal Canary | c6ca951 | 2016-11-14 10:36:24 -0500 | [diff] [blame] | 82 | double dpi = 72.0; |
Hal Canary | c7a4665 | 2016-10-17 11:52:40 -0400 | [diff] [blame] | 83 | if (args.Length == 0) { |
Hal Canary | c6ca951 | 2016-11-14 10:36:24 -0500 | [diff] [blame] | 84 | System.Console.WriteLine("usage:\n\txps_to_png [-dDPI] [XPS_FILES]\n\n"); |
Hal Canary | c7a4665 | 2016-10-17 11:52:40 -0400 | [diff] [blame] | 85 | System.Environment.Exit(1); |
| 86 | } |
Hal Canary | c6ca951 | 2016-11-14 10:36:24 -0500 | [diff] [blame] | 87 | System.Collections.Generic.List<string> xpsFiles = |
| 88 | new System.Collections.Generic.List<string>(); |
Hal Canary | c7a4665 | 2016-10-17 11:52:40 -0400 | [diff] [blame] | 89 | foreach (string arg in args) { |
Hal Canary | c6ca951 | 2016-11-14 10:36:24 -0500 | [diff] [blame] | 90 | string flag = "-d"; |
| 91 | if (arg.StartsWith(flag)) { |
| 92 | dpi = System.Convert.ToDouble(arg.Remove(0, flag.Length)); |
| 93 | } else if (System.IO.File.Exists(arg)) { |
| 94 | xpsFiles.Add(arg); |
| 95 | } else { |
| 96 | System.Console.WriteLine("file missing: '" + arg + "'\n\n"); |
| 97 | System.Environment.Exit(1); |
| 98 | } |
| 99 | } |
| 100 | foreach (string file in xpsFiles) { |
Hal Canary | c7a4665 | 2016-10-17 11:52:40 -0400 | [diff] [blame] | 101 | System.Threading.Thread t = new System.Threading.Thread( |
Hal Canary | c6ca951 | 2016-11-14 10:36:24 -0500 | [diff] [blame] | 102 | () => try_convert(dpi, file, file)); |
Hal Canary | c7a4665 | 2016-10-17 11:52:40 -0400 | [diff] [blame] | 103 | t.SetApartmentState(System.Threading.ApartmentState.STA); |
| 104 | t.Start(); |
| 105 | } |
| 106 | } |
| 107 | } |