WPF/FooEditEngine/FooPrintText.cs

   1 /*
   2  * Copyright (C) 2013 FooProject
   3  * * This program is free software; you can redistribute it and/or modify it under the terms of the GNU General Public License as published by
   4  * the Free Software Foundation; either version 3 of the License, or (at your option) any later version.
   5
   6  * This program is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even the implied warranty of
   7  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for more details.
   8
   9 You should have received a copy of the GNU General Public License along with this program. If not, see <http://www.gnu.org/licenses/>.
  10  */
  11 using System;
  12 using System.Threading.Tasks;
  13 using System.Printing;
  14 using System.Windows;
  15 using System.Windows.Xps;
  16 using Shapes = System.Windows.Shapes;
  17 using System.Collections.Generic;
  18 using System.Windows.Controls;
  19 using System.Windows.Documents;
  20 using System.Windows.Documents.Serialization;
  21 using System.Windows.Media;
  22
  23 namespace FooEditEngine.WPF
  24 {
  25     /// <summary>
  26     /// イベントデータ
  27     /// </summary>
  28     public sealed class ParseCommandEventArgs
  29     {
  30         /// <summary>
  31         /// 印刷中のページ番号
  32         /// </summary>
  33         public int PageNumber;
  34         /// <summary>
  35         /// ページ範囲内で許容されている最大の番号
  36         /// </summary>
  37         public int MaxPageNumber;
  38         /// <summary>
  39         /// 処理前の文字列
  40         /// </summary>
  41         public string Original;
  42         /// <summary>
  43         /// コンストラクター
  44         /// </summary>
  45         /// <param name="nowPage">印刷中のページ番号</param>
  46         /// <param name="maxPage">印刷すべき最大のページ番号</param>
  47         /// <param name="org">処理前の文字列</param>
  48         public ParseCommandEventArgs(int nowPage,int maxPage,string org)
  49         {
  50             this.PageNumber = nowPage;
  51             this.MaxPageNumber = maxPage;
  52             this.Original = org;
  53         }
  54     }
  55
  56     /// <summary>
  57     /// コマンド処理用デリゲート
  58     /// </summary>
  59     /// <param name="sender">送信元のクラス</param>
  60     /// <param name="e">イベントデータ</param>
  61     /// <returns>処理後の文字列</returns>
  62     public delegate string ParseCommandHandler(object sender,ParseCommandEventArgs e);
  63
  64     /// <summary>
  65     /// 印刷用のクラス
  66     /// </summary>
  67     public class FooPrintText
  68     {
  69         /// <summary>
  70         /// コンストラクター
  71         /// </summary>
  72         public FooPrintText()
  73         {
  74             this.ParseHF = new ParseCommandHandler((s, e) => { return e.Original; });
  75         }
  76
  77         /// <summary>
  78         /// 印刷する最小のページ番号
  79         /// </summary>
  80         public int StartPage
  81         {
  82             get;
  83             set;
  84         }
  85
  86         /// <summary>
  87         /// 印刷する最大のページ番号
  88         /// </summary>
  89         public int EndPage
  90         {
  91             get;
  92             set;
  93         }
  94
  95         /// <summary>
  96         /// 印刷する領域の大きさ
  97         /// </summary>
  98         public System.Windows.Rect PageRect
  99         {
 100             get;
 101             set;
 102         }
 103
 104         /// <summary>
 105         /// 対象となるドキュメント
 106         /// </summary>
 107         public Document Document
 108         {
 109             get;
 110             set;
 111         }
 112
 113         /// <summary>
 114         /// レタリング時のフロー方向を示す
 115         /// </summary>
 116         public FlowDirection FlowDirection
 117         {
 118             get;
 119             set;
 120         }
 121
 122         /// <summary>
 123         /// 行番号を表示するかどうか
 124         /// </summary>
 125         public bool DrawLineNumber
 126         {
 127             get;
 128             set;
 129         }
 130
 131         /// <summary>
 132         /// ハイパーリンクに下線を引くなら真
 133         /// </summary>
 134         public bool MarkURL
 135         {
 136             get;
 137             set;
 138         }
 139
 140         /// <summary>
 141         /// デフォルトの文字ブラシ
 142         /// </summary>
 143         public System.Windows.Media.Color Foreground
 144         {
 145             get;
 146             set;
 147         }
 148
 149         /// <summary>
 150         /// URLを表すブラシ
 151         /// </summary>
 152         public System.Windows.Media.Color URL
 153         {
 154             get;
 155             set;
 156         }
 157
 158         /// <summary>
 159         /// キーワード１を表すブラシ
 160         /// </summary>
 161         public System.Windows.Media.Color Keyword1
 162         {
 163             get;
 164             set;
 165         }
 166
 167         /// <summary>
 168         /// キーワード２を表すブラシ
 169         /// </summary>
 170         public System.Windows.Media.Color Keyword2
 171         {
 172             get;
 173             set;
 174         }
 175
 176         /// <summary>
 177         /// コメントを表すブラシ
 178         /// </summary>
 179         public System.Windows.Media.Color Comment
 180         {
 181             get;
 182             set;
 183         }
 184
 185         /// <summary>
 186         /// 文字リテラルを表すブラシ
 187         /// </summary>
 188         public System.Windows.Media.Color Litral
 189         {
 190             get;
 191             set;
 192         }
 193
 194         /// <summary>
 195         /// 印刷に使用するフォント
 196         /// </summary>
 197         public FontFamily Font
 198         {
 199             get;
 200             set;
 201         }
 202
 203         /// <summary>
 204         /// フォントサイズ
 205         /// </summary>
 206         public double FontSize
 207         {
 208             get;
 209             set;
 210         }
 211
 212         /// <summary>
 213         /// 折り返しの方法を指定する
 214         /// </summary>
 215         public LineBreakMethod LineBreakMethod
 216         {
 217             get;
 218             set;
 219         }
 220
 221         /// <summary>
 222         /// 折り返した時の文字数を指定する
 223         /// </summary>
 224         public int LineBreakCharCount
 225         {
 226             get;
 227             set;
 228         }
 229
 230         /// <summary>
 231         /// ヘッダー
 232         /// </summary>
 233         public string Header
 234         {
 235             get;
 236             set;
 237         }
 238
 239         /// <summary>
 240         /// フッター
 241         /// </summary>
 242         public string Footer
 243         {
 244             get;
 245             set;
 246         }
 247
 248         /// <summary>
 249         /// シンタックスハイライター
 250         /// </summary>
 251         public IHilighter Hilighter
 252         {
 253             get;
 254             set;
 255         }
 256
 257         /// <summary>
 258         /// 余白
 259         /// </summary>
 260         public Padding Padding
 261         {
 262             get;
 263             set;
 264         }
 265
 266         /// <summary>
 267         /// ヘッダーやフッターを処理する
 268         /// </summary>
 269         public ParseCommandHandler ParseHF;
 270
 271         /// <summary>
 272         /// 印刷する
 273         /// </summary>
 274         /// <param name="pd">プリントダイアログ</param>
 275         public void Print(PrintDialog pd)
 276         {
 277             if (this.Font == null || this.Document == null)
 278                 throw new InvalidOperationException();
 279
 280             WPFRender render = new WPFRender(this.Font, this.FontSize);
 281             render.Foreground = this.Foreground;
 282             render.Comment = this.Comment;
 283             render.Keyword1 = this.Keyword1;
 284             render.Keyword2 = this.Keyword2;
 285             render.Literal = this.Litral;
 286             render.Url = this.URL;
 287             render.RightToLeft = this.FlowDirection == System.Windows.FlowDirection.RightToLeft;
 288             render.Printing = true;
 289             Document documentSnap = new Document(this.Document);
 290             documentSnap.LayoutLines.Render = render;
 291             PrintableView view = new PrintableView(documentSnap, render,this.Padding);
 292             view.Header = this.Header;
 293             view.Footer = this.Footer;
 294             view.PageBound = this.PageRect;
 295             view.Hilighter = this.Hilighter;
 296             documentSnap.LineBreak = this.LineBreakMethod;
 297             documentSnap.LineBreakCharCount = this.LineBreakCharCount;
 298             documentSnap.DrawLineNumber = this.DrawLineNumber;
 299             documentSnap.UrlMark = this.MarkURL;
 300             documentSnap.PerformLayout(false);
 301
 302             try
 303             {
 304                 FixedDocument fd = new FixedDocument();
 305                 fd.DocumentPaginator.PageSize = this.PageRect.Size;
 306
 307                 int currentPage = 0;
 308
 309                 bool result = false;
 310
 311                 while (!result)
 312                 {
 313                     if (this.EndPage != -1 && currentPage > this.EndPage)
 314                         break;
 315
 316                     if (this.StartPage == -1 || currentPage >= this.StartPage)
 317                     {
 318                         PageContent pc = new PageContent();
 319
 320                         FixedPage fp = new FixedPage();
 321                         fp.Width = this.PageRect.Width;
 322                         fp.Height = this.PageRect.Height;
 323
 324                         pc.Child = fp;
 325
 326                         view.Header = this.ParseHF(this, new ParseCommandEventArgs(currentPage, this.EndPage, this.Header));
 327                         view.Footer = this.ParseHF(this, new ParseCommandEventArgs(currentPage, this.EndPage, this.Footer));
 328
 329                         DrawingVisual dv = new DrawingVisual();
 330
 331                         using (DrawingContext dc = dv.RenderOpen())
 332                         {
 333                             render.SetDrawingContext(dc);
 334                             view.Draw(view.PageBound);
 335                         }
 336
 337                         VisualHost host = new VisualHost();
 338                         host.AddVisual(dv);
 339
 340                         fp.Children.Add(host);
 341
 342                         fd.Pages.Add(pc);
 343                     }
 344                     result = view.TryPageDown();
 345                     currentPage++;
 346                 }
 347
 348                 pd.PrintDocument(fd.DocumentPaginator,"");
 349             }
 350             catch (PrintingCanceledException)
 351             {
 352             }
 353             finally
 354             {
 355                 view.Dispose();
 356             }
 357         }
 358     }
 359
 360     class VisualHost : FrameworkElement
 361     {
 362         private List<Visual> fVisuals;
 363
 364         public VisualHost()
 365         {
 366             fVisuals = new List<Visual>();
 367         }
 368
 369         protected override Visual GetVisualChild(int index)
 370         {
 371             return fVisuals[index];
 372         }
 373
 374         protected override int VisualChildrenCount
 375         {
 376             get { return fVisuals.Count; }
 377         }
 378
 379         public void AddVisual(Visual visual)
 380         {
 381             fVisuals.Add(visual);
 382             base.AddVisualChild(visual);
 383         }
 384
 385         public void RemoveVisual(Visual visual)
 386         {
 387             fVisuals.Remove(visual);
 388             base.RemoveVisualChild(visual);
 389         }
 390     }
 391 }