src/html/htmprint.cpp

   1 /////////////////////////////////////////////////////////////////////////////
   2 // Name:        htmprint.cpp
   3 // Purpose:     html printing classes
   4 // Author:      Vaclav Slavik
   5 // Created:     25/09/99
   6 // RCS-ID:      $Id$
   7 // Copyright:   (c) Vaclav Slavik, 1999
   8 // Licence:     wxWindows licence
   9 /////////////////////////////////////////////////////////////////////////////
  10
  11
  12 #ifdef __GNUG__
  13 #pragma implementation
  14 #endif
  15
  16 // For compilers that support precompilation, includes "wx/wx.h".
  17 #include "wx/wxprec.h"
  18
  19 #include "wx/defs.h"
  20
  21 #ifdef __BORLANDC__
  22 #pragma hdrstop
  23 #endif
  24
  25 #ifndef WX_PRECOMP
  26 #include "wx/wx.h"
  27 #endif
  28
  29 #if wxUSE_HTML & wxUSE_PRINTING_ARCHITECTURE
  30
  31 #include "wx/print.h"
  32 #include "wx/printdlg.h"
  33 #include "wx/html/htmprint.h"
  34 #include "wx/wxhtml.h"
  35 #include "wx/wfstream.h"
  36
  37
  38 //--------------------------------------------------------------------------------
  39 // wxHtmlDCRenderer
  40 //--------------------------------------------------------------------------------
  41
  42
  43 wxHtmlDCRenderer::wxHtmlDCRenderer() : wxObject()
  44 {
  45     m_DC = NULL;
  46     m_Width = m_Height = 0;
  47     m_Cells = NULL;
  48     m_Parser = new wxHtmlWinParser(NULL);
  49     m_FS = new wxFileSystem();
  50     m_Parser -> SetFS(m_FS);
  51     m_Scale = 1.0;
  52 }
  53
  54
  55
  56 wxHtmlDCRenderer::~wxHtmlDCRenderer()
  57 {
  58     if (m_Cells) delete m_Cells;
  59     if (m_Parser) delete m_Parser;
  60     if (m_FS) delete m_FS;
  61 }
  62
  63
  64
  65 void wxHtmlDCRenderer::SetDC(wxDC *dc, int maxwidth)
  66 {
  67     int dx, dy;
  68
  69     wxDisplaySize(&dx, &dy);
  70     m_MaxWidth = maxwidth;
  71 #if 0
  72     m_Scale = (float)dx * 2 / 3 / (float)maxwidth;
  73             // let the width of A4 is approximately 2/3 the screen width
  74 #endif
  75     m_Scale = (float)800 / (float)maxwidth;
  76             // for now, assume screen width = 800 => good results
  77
  78     m_DC = dc;
  79     m_Parser -> SetDC(dc);
  80 }
  81
  82
  83
  84 void wxHtmlDCRenderer::SetSize(int width, int height)
  85 {
  86     m_Width = (int)(width * m_Scale);
  87     m_Height = (int)(height * m_Scale);
  88 }
  89
  90
  91
  92 void wxHtmlDCRenderer::SetHtmlText(const wxString& html, const wxString& basepath, bool isdir)
  93 {
  94     if (m_DC == NULL) return;
  95
  96     if (m_Cells != NULL) delete m_Cells;
  97
  98     m_FS -> ChangePathTo(basepath, isdir);
  99     m_DC -> SetUserScale(1.0, 1.0);
 100     m_Cells = (wxHtmlContainerCell*) m_Parser -> Parse(html);
 101     m_Cells -> SetIndent(0, wxHTML_INDENT_ALL, wxHTML_UNITS_PIXELS);
 102     m_Cells -> Layout(m_Width);
 103 }
 104
 105
 106
 107 int wxHtmlDCRenderer::Render(int x, int y, int from, int dont_render)
 108 {
 109     int pbreak;
 110
 111     if (m_Cells == NULL || m_DC == NULL) return 0;
 112
 113     pbreak = (int)(from * m_Scale + m_Height);
 114     while (m_Cells -> AdjustPagebreak(&pbreak)) {}
 115
 116     if (!dont_render) {
 117         int w, h;
 118         m_DC -> GetSize(&w, &h);
 119         float overallScale = (float)(w/(float)m_MaxWidth) / m_Scale;
 120         m_DC -> SetUserScale(overallScale, overallScale);
 121
 122         m_DC -> SetBrush(*wxWHITE_BRUSH);
 123
 124         m_DC -> SetClippingRegion(x * m_Scale, y * m_Scale, m_Width, m_Height);
 125         m_Cells -> Draw(*m_DC,
 126                         x * m_Scale, (y - from) * m_Scale,
 127                         y * m_Scale, pbreak + (y - from) * m_Scale);
 128         m_DC -> DestroyClippingRegion();
 129     }
 130
 131     if (pbreak < m_Cells -> GetHeight()) return (int)(pbreak / m_Scale);
 132     else return GetTotalHeight();
 133 }
 134
 135
 136
 137 int wxHtmlDCRenderer::GetTotalHeight()
 138 {
 139     if (m_Cells) return (int)(m_Cells -> GetHeight() / m_Scale);
 140     else return 0;
 141 }
 142
 143
 144
 145
 146
 147
 148
 149
 150
 151
 152
 153
 154
 155
 156
 157
 158 //--------------------------------------------------------------------------------
 159 // wxHtmlPrintout
 160 //--------------------------------------------------------------------------------
 161
 162
 163
 164 wxHtmlPrintout::wxHtmlPrintout(const wxString& title) : wxPrintout(title)
 165 {
 166     m_Renderer = new wxHtmlDCRenderer;
 167     m_RendererHdr = new wxHtmlDCRenderer;
 168     m_NumPages = wxHTML_PRINT_MAX_PAGES;
 169     m_Document = m_BasePath = wxEmptyString; m_BasePathIsDir = TRUE;
 170     m_Headers[0] = m_Headers[1] = wxEmptyString;
 171     m_Footers[0] = m_Footers[1] = wxEmptyString;
 172     m_HeaderHeight = m_FooterHeight = 0;
 173     SetMargins(); // to default values
 174 }
 175
 176
 177
 178 wxHtmlPrintout::~wxHtmlPrintout()
 179 {
 180     delete m_Renderer;
 181     delete m_RendererHdr;
 182 }
 183
 184
 185
 186 void wxHtmlPrintout::OnBeginPrinting()
 187 {
 188     int pageWidth, pageHeight, mm_w, mm_h;
 189     float ppmm_h, ppmm_v;
 190
 191     wxPrintout::OnBeginPrinting();
 192
 193     GetPageSizePixels(&pageWidth, &pageHeight);
 194     GetPageSizeMM(&mm_w, &mm_h);
 195     ppmm_h = (float)pageWidth / mm_w;
 196     ppmm_v = (float)pageHeight / mm_h;
 197
 198     /* prepare headers/footers renderer: */
 199
 200     m_RendererHdr -> SetDC(GetDC(), pageWidth);
 201     m_RendererHdr -> SetSize(ppmm_h * (mm_w - m_MarginLeft - m_MarginTop),
 202                           ppmm_v * (mm_h - m_MarginTop - m_MarginBottom));
 203     if (m_Headers[0] != wxEmptyString) {
 204         m_RendererHdr -> SetHtmlText(TranslateHeader(m_Headers[0], 1));
 205         m_HeaderHeight = m_RendererHdr -> GetTotalHeight();
 206     }
 207     else if (m_Headers[1] != wxEmptyString) {
 208         m_RendererHdr -> SetHtmlText(TranslateHeader(m_Headers[1], 1));
 209         m_HeaderHeight = m_RendererHdr -> GetTotalHeight();
 210     }
 211     if (m_Footers[0] != wxEmptyString) {
 212         m_RendererHdr -> SetHtmlText(TranslateHeader(m_Footers[0], 1));
 213         m_FooterHeight = m_RendererHdr -> GetTotalHeight();
 214     }
 215     else if (m_Footers[1] != wxEmptyString) {
 216         m_RendererHdr -> SetHtmlText(TranslateHeader(m_Footers[1], 1));
 217         m_FooterHeight = m_RendererHdr -> GetTotalHeight();
 218     }
 219
 220     /* prepare main renderer: */
 221     m_Renderer -> SetDC(GetDC(), pageWidth);
 222     m_Renderer -> SetSize(ppmm_h * (mm_w - m_MarginLeft - m_MarginTop),
 223                           ppmm_v * (mm_h - m_MarginTop - m_MarginBottom) -
 224                           m_FooterHeight - m_HeaderHeight -
 225                           ((m_HeaderHeight == 0) ? 0 : m_MarginSpace * ppmm_v) -
 226                           ((m_FooterHeight == 0) ? 0 : m_MarginSpace * ppmm_v)
 227                           );
 228     m_Renderer -> SetHtmlText(m_Document, m_BasePath, m_BasePathIsDir);
 229     CountPages();
 230 }
 231
 232
 233 bool wxHtmlPrintout::OnPrintPage(int page)
 234 {
 235     wxDC *dc = GetDC();
 236     if (dc) {
 237         if (HasPage(page))
 238             RenderPage(dc, page);
 239         return TRUE;
 240     } else
 241         return FALSE;
 242 }
 243
 244
 245 void wxHtmlPrintout::GetPageInfo(int *minPage, int *maxPage, int *selPageFrom, int *selPageTo)
 246 {
 247     *minPage = 1;
 248     *maxPage = wxHTML_PRINT_MAX_PAGES;
 249     *selPageFrom = 1;
 250     *selPageTo = wxHTML_PRINT_MAX_PAGES;
 251 }
 252
 253
 254
 255 bool wxHtmlPrintout::HasPage(int pageNum)
 256 {
 257     return (pageNum >= 1 && pageNum <= m_NumPages);
 258 }
 259
 260
 261
 262 void wxHtmlPrintout::SetHtmlText(const wxString& html, const wxString &basepath, bool isdir)
 263 {
 264     m_Document = html;
 265     m_BasePath = basepath;
 266     m_BasePathIsDir = isdir;
 267 }
 268
 269
 270
 271 void wxHtmlPrintout::SetHtmlFile(const wxString& htmlfile)
 272 {
 273     wxFileSystem fs;
 274     wxFSFile *ff = fs.OpenFile(htmlfile);
 275     wxInputStream *st = ff -> GetStream();
 276     char *t = new char[st -> GetSize() + 1];
 277     st -> Read(t, st -> GetSize());
 278     t[st -> GetSize()] = 0;
 279
 280     wxString doc = wxString(t);
 281     delete t;
 282     delete ff;
 283
 284     SetHtmlText(doc, htmlfile, FALSE);
 285 }
 286
 287
 288
 289 void wxHtmlPrintout::SetHeader(const wxString& header, int pg)
 290 {
 291     if (pg == wxPAGE_ALL || pg == wxPAGE_EVEN)
 292         m_Headers[0] = header;
 293     if (pg == wxPAGE_ALL || pg == wxPAGE_ODD)
 294         m_Headers[1] = header;
 295 }
 296
 297
 298
 299 void wxHtmlPrintout::SetFooter(const wxString& footer, int pg)
 300 {
 301     if (pg == wxPAGE_ALL || pg == wxPAGE_EVEN)
 302         m_Footers[0] = footer;
 303     if (pg == wxPAGE_ALL || pg == wxPAGE_ODD)
 304         m_Footers[1] = footer;
 305 }
 306
 307
 308
 309 void wxHtmlPrintout::CountPages()
 310 {
 311     wxBusyCursor wait;
 312     int pageWidth, pageHeight, mm_w, mm_h;
 313     float ppmm_h, ppmm_v;
 314
 315     GetPageSizePixels(&pageWidth, &pageHeight);
 316     GetPageSizeMM(&mm_w, &mm_h);
 317     ppmm_h = (float)pageWidth / mm_w;
 318     ppmm_v = (float)pageHeight / mm_h;
 319
 320     int pos = 0;
 321
 322     m_NumPages = 0;
 323
 324     m_PageBreaks[0] = 0;
 325     do {
 326         pos = m_Renderer -> Render(ppmm_h * m_MarginLeft,
 327                                    ppmm_v * (m_MarginTop + (m_HeaderHeight == 0 ? 0 : m_MarginSpace)) + m_HeaderHeight,
 328                                    pos, TRUE);
 329         m_PageBreaks[++m_NumPages] = pos;
 330     } while (pos < m_Renderer -> GetTotalHeight());
 331 }
 332
 333
 334
 335 void wxHtmlPrintout::RenderPage(wxDC *dc, int page)
 336 {
 337     wxBusyCursor wait;
 338
 339     int pageWidth, pageHeight, mm_w, mm_h;
 340     float ppmm_h, ppmm_v;
 341
 342     GetPageSizePixels(&pageWidth, &pageHeight);
 343     GetPageSizeMM(&mm_w, &mm_h);
 344     ppmm_h = (float)pageWidth / mm_w;
 345     ppmm_v = (float)pageHeight / mm_h;
 346
 347     m_Renderer -> SetDC(dc, pageWidth);
 348
 349     dc -> SetBackgroundMode(wxTRANSPARENT);
 350
 351     m_Renderer -> Render(ppmm_h * m_MarginLeft,
 352                          ppmm_v * (m_MarginTop + (m_HeaderHeight == 0 ? 0 : m_MarginSpace)) + m_HeaderHeight,
 353                          m_PageBreaks[page-1]);
 354
 355     m_RendererHdr -> SetDC(dc, pageWidth);
 356     if (m_Headers[page % 2] != wxEmptyString) {
 357         m_RendererHdr -> SetHtmlText(TranslateHeader(m_Headers[page % 2], page));
 358         m_RendererHdr -> Render(ppmm_h * m_MarginLeft, ppmm_v * m_MarginTop);
 359     }
 360     if (m_Footers[page % 2] != wxEmptyString) {
 361         m_RendererHdr -> SetHtmlText(TranslateHeader(m_Footers[page % 2], page));
 362         m_RendererHdr -> Render(ppmm_h * m_MarginLeft, pageHeight - ppmm_v * m_MarginBottom - m_FooterHeight);
 363     }
 364 }
 365
 366
 367
 368 wxString wxHtmlPrintout::TranslateHeader(const wxString& instr, int page)
 369 {
 370     wxString r = instr;
 371     wxString num;
 372
 373     num.Printf("%i", page);
 374     r.Replace("@PAGENUM@", num);
 375
 376     num.Printf("%i", m_NumPages);
 377     r.Replace("@PAGESCNT@", num);
 378
 379     return r;
 380 }
 381
 382
 383
 384 void wxHtmlPrintout::SetMargins(float top, float bottom, float left, float right, float spaces)
 385 {
 386     m_MarginTop = top;
 387     m_MarginBottom = bottom;
 388     m_MarginLeft = left;
 389     m_MarginRight = right;
 390     m_MarginSpace = spaces;
 391 }
 392
 393
 394
 395
 396
 397
 398 //--------------------------------------------------------------------------------
 399 // wxHtmlEasyPrinting
 400 //--------------------------------------------------------------------------------
 401
 402
 403 wxHtmlEasyPrinting::wxHtmlEasyPrinting(const wxString& name, wxFrame *parent_frame)
 404 {
 405     m_Frame = parent_frame;
 406     m_Name = name;
 407     m_PrintData = new wxPrintData;
 408 #if (defined __WXGTK__) || (defined __WXMOTIF__)
 409     (*m_PrintData) = (*wxThePrintSetupData);
 410 #endif
 411     m_PageSetupData = new wxPageSetupDialogData;
 412     m_Headers[0] = m_Headers[1] = m_Footers[0] = m_Footers[1] = wxEmptyString;
 413
 414     m_PageSetupData -> EnableMargins(TRUE);
 415     m_PageSetupData -> SetMarginTopLeft(wxPoint(25, 25));
 416     m_PageSetupData -> SetMarginBottomRight(wxPoint(25, 25));
 417 }
 418
 419
 420
 421 wxHtmlEasyPrinting::~wxHtmlEasyPrinting()
 422 {
 423     delete m_PrintData;
 424     delete m_PageSetupData;
 425 }
 426
 427
 428
 429 void wxHtmlEasyPrinting::PreviewFile(const wxString &htmlfile)
 430 {
 431     wxHtmlPrintout *p1 = CreatePrintout();
 432     p1 -> SetHtmlFile(htmlfile);
 433     wxHtmlPrintout *p2 = CreatePrintout();
 434     p2 -> SetHtmlFile(htmlfile);
 435     DoPreview(p1, p2);
 436 }
 437
 438
 439
 440 void wxHtmlEasyPrinting::PreviewText(const wxString &htmltext, const wxString &basepath)
 441 {
 442     wxHtmlPrintout *p1 = CreatePrintout();
 443     p1 -> SetHtmlText(htmltext, basepath, TRUE);
 444     wxHtmlPrintout *p2 = CreatePrintout();
 445     p2 -> SetHtmlText(htmltext, basepath, TRUE);
 446     DoPreview(p1, p2);
 447 }
 448
 449
 450
 451 void wxHtmlEasyPrinting::PrintFile(const wxString &htmlfile)
 452 {
 453     wxHtmlPrintout *p = CreatePrintout();
 454     p -> SetHtmlFile(htmlfile);
 455     DoPrint(p);
 456 }
 457
 458
 459
 460 void wxHtmlEasyPrinting::PrintText(const wxString &htmltext, const wxString &basepath)
 461 {
 462     wxHtmlPrintout *p = CreatePrintout();
 463     p -> SetHtmlText(htmltext, basepath, TRUE);
 464     DoPrint(p);
 465 }
 466
 467
 468
 469 void wxHtmlEasyPrinting::DoPreview(wxHtmlPrintout *printout1, wxHtmlPrintout *printout2)
 470 {
 471     // Pass two printout objects: for preview, and possible printing.
 472     wxPrintDialogData printDialogData(*m_PrintData);
 473     wxPrintPreview *preview = new wxPrintPreview(printout1, printout2, &printDialogData);
 474     if (!preview -> Ok()) {
 475         delete preview;
 476         wxMessageBox(_("There was a problem previewing.\nPerhaps your current printer is not set correctly?"), _("Previewing"), wxOK);
 477     }
 478
 479     else {
 480         wxPreviewFrame *frame = new wxPreviewFrame(preview, m_Frame,
 481                                                    m_Name + _(" Preview"),
 482                                                    wxPoint(100, 100), wxSize(650, 500));
 483         frame -> Centre(wxBOTH);
 484         frame -> Initialize();
 485         frame -> Show(TRUE);
 486     }
 487 }
 488
 489
 490
 491 void wxHtmlEasyPrinting::DoPrint(wxHtmlPrintout *printout)
 492 {
 493     wxPrintDialogData printDialogData(*m_PrintData);
 494     wxPrinter printer(&printDialogData);
 495
 496     if (!printer.Print(m_Frame, printout, TRUE))
 497         wxMessageBox(_("There was a problem printing.\nPerhaps your current printer is not set correctly?"), _("Printing"), wxOK);
 498     else
 499         (*m_PrintData) = printer.GetPrintDialogData().GetPrintData();
 500 }
 501
 502
 503
 504 void wxHtmlEasyPrinting::PrinterSetup()
 505 {
 506     wxPrintDialogData printDialogData(*m_PrintData);
 507     wxPrintDialog printerDialog(m_Frame, &printDialogData);
 508
 509     printerDialog.GetPrintDialogData().SetSetupDialog(TRUE);
 510
 511     if (printerDialog.ShowModal() == wxID_OK)
 512         (*m_PrintData) = printerDialog.GetPrintDialogData().GetPrintData();
 513 }
 514
 515
 516
 517 void wxHtmlEasyPrinting::PageSetup()
 518 {
 519     m_PageSetupData -> SetPrintData(*m_PrintData);
 520     wxPageSetupDialog pageSetupDialog(m_Frame, m_PageSetupData);
 521
 522     if (pageSetupDialog.ShowModal() == wxID_OK) {
 523         (*m_PrintData) = pageSetupDialog.GetPageSetupData().GetPrintData();
 524         (*m_PageSetupData) = pageSetupDialog.GetPageSetupData();
 525     }
 526 }
 527
 528
 529
 530 void wxHtmlEasyPrinting::SetHeader(const wxString& header, int pg)
 531 {
 532     if (pg == wxPAGE_ALL || pg == wxPAGE_EVEN)
 533         m_Headers[0] = header;
 534     if (pg == wxPAGE_ALL || pg == wxPAGE_ODD)
 535         m_Headers[1] = header;
 536 }
 537
 538
 539
 540 void wxHtmlEasyPrinting::SetFooter(const wxString& footer, int pg)
 541 {
 542     if (pg == wxPAGE_ALL || pg == wxPAGE_EVEN)
 543         m_Footers[0] = footer;
 544     if (pg == wxPAGE_ALL || pg == wxPAGE_ODD)
 545         m_Footers[1] = footer;
 546 }
 547
 548
 549
 550 wxHtmlPrintout *wxHtmlEasyPrinting::CreatePrintout()
 551 {
 552     wxHtmlPrintout *p = new wxHtmlPrintout(m_Name);
 553
 554     p -> SetHeader(m_Headers[0], wxPAGE_EVEN);
 555     p -> SetHeader(m_Headers[1], wxPAGE_ODD);
 556     p -> SetFooter(m_Footers[0], wxPAGE_EVEN);
 557     p -> SetFooter(m_Footers[1], wxPAGE_ODD);
 558
 559     p -> SetMargins(m_PageSetupData -> GetMarginTopLeft().y,
 560                     m_PageSetupData -> GetMarginBottomRight().y,
 561                     m_PageSetupData -> GetMarginTopLeft().x,
 562                     m_PageSetupData -> GetMarginBottomRight().x);
 563
 564     return p;
 565 }
 566
 567
 568
 569 #endif // wxUSE_HTML & wxUSE_PRINTING_ARCHITECTURE