src/html/htmprint.cpp

   1
   2 /////////////////////////////////////////////////////////////////////////////
   3 // Name:        htmprint.cpp
   4 // Purpose:     html printing classes
   5 // Author:      Vaclav Slavik
   6 // Created:     25/09/99
   7 // RCS-ID:      $Id$
   8 // Copyright:   (c) Vaclav Slavik, 1999
   9 // Licence:     wxWindows licence
  10 /////////////////////////////////////////////////////////////////////////////
  11
  12
  13 #ifdef __GNUG__
  14 #pragma implementation
  15 #endif
  16
  17 // For compilers that support precompilation, includes "wx/wx.h".
  18 #include "wx/wxprec.h"
  19
  20 #include "wx/defs.h"
  21
  22 #ifdef __BORLANDC__
  23 #pragma hdrstop
  24 #endif
  25
  26 #ifndef WX_PRECOMP
  27 #include "wx/wx.h"
  28 #endif
  29
  30 #if wxUSE_HTML & wxUSE_PRINTING_ARCHITECTURE
  31
  32 #include "wx/print.h"
  33 #include "wx/printdlg.h"
  34 #include "wx/html/htmprint.h"
  35 #include "wx/wxhtml.h"
  36 #include "wx/wfstream.h"
  37
  38
  39 //--------------------------------------------------------------------------------
  40 // wxHtmlDCRenderer
  41 //--------------------------------------------------------------------------------
  42
  43
  44 wxHtmlDCRenderer::wxHtmlDCRenderer() : wxObject()
  45 {
  46     m_DC = NULL;
  47     m_Width = m_Height = 0;
  48     m_Cells = NULL;
  49     m_Parser = new wxHtmlWinParser(NULL);
  50     m_FS = new wxFileSystem();
  51     m_Parser -> SetFS(m_FS);
  52     m_Scale = 1.0;
  53 }
  54
  55
  56
  57 wxHtmlDCRenderer::~wxHtmlDCRenderer()
  58 {
  59     if (m_Cells) delete m_Cells;
  60     if (m_Parser) delete m_Parser;
  61     if (m_FS) delete m_FS;
  62 }
  63
  64
  65
  66 void wxHtmlDCRenderer::SetDC(wxDC *dc, int maxwidth)
  67 {
  68     int dx, dy;
  69
  70     wxDisplaySize(&dx, &dy);
  71     m_MaxWidth = maxwidth;
  72 #if 0
  73     m_Scale = (float)dx * 2 / 3 / (float)maxwidth;
  74             // let the width of A4 is approximately 2/3 the screen width
  75 #endif
  76     m_Scale = (float)800 / (float)maxwidth;
  77             // for now, assume screen width = 800 => good results
  78
  79     m_DC = dc;
  80     m_Parser -> SetDC(dc);
  81 }
  82
  83
  84
  85 void wxHtmlDCRenderer::SetSize(int width, int height)
  86 {
  87     m_Width = (int)(width * m_Scale);
  88     m_Height = (int)(height * m_Scale);
  89 }
  90
  91
  92
  93 void wxHtmlDCRenderer::SetHtmlText(const wxString& html, const wxString& basepath, bool isdir)
  94 {
  95     if (m_DC == NULL) return;
  96
  97     if (m_Cells != NULL) delete m_Cells;
  98
  99     m_FS -> ChangePathTo(basepath, isdir);
 100     m_DC -> SetUserScale(1.0, 1.0);
 101     m_Cells = (wxHtmlContainerCell*) m_Parser -> Parse(html);
 102     m_Cells -> SetIndent(0, wxHTML_INDENT_ALL, wxHTML_UNITS_PIXELS);
 103     m_Cells -> Layout(m_Width);
 104 }
 105
 106
 107
 108 int wxHtmlDCRenderer::Render(int x, int y, int from, int dont_render)
 109 {
 110     int pbreak, hght;
 111
 112     if (m_Cells == NULL || m_DC == NULL) return 0;
 113
 114     pbreak = (int)(from * m_Scale + m_Height);
 115     while (m_Cells -> AdjustPagebreak(&pbreak)) {}
 116     hght = pbreak - (int)(from * m_Scale);
 117
 118     if (!dont_render) {
 119         int w, h;
 120         m_DC -> GetSize(&w, &h);
 121         float overallScale = (float)(w/(float)m_MaxWidth) / m_Scale;
 122         m_DC -> SetUserScale(overallScale, overallScale);
 123
 124         m_DC -> SetBrush(*wxWHITE_BRUSH);
 125
 126         m_DC -> SetClippingRegion(x * m_Scale, y * m_Scale, m_Width, hght);
 127         m_Cells -> Draw(*m_DC,
 128                         x * m_Scale, (y - from) * m_Scale,
 129                         y * m_Scale, pbreak + (y /*- from*/) * m_Scale);
 130         m_DC -> DestroyClippingRegion();
 131     }
 132
 133     if (pbreak < m_Cells -> GetHeight()) return (int)(pbreak / m_Scale);
 134     else return GetTotalHeight();
 135 }
 136
 137
 138
 139 int wxHtmlDCRenderer::GetTotalHeight()
 140 {
 141     if (m_Cells) return (int)(m_Cells -> GetHeight() / m_Scale);
 142     else return 0;
 143 }
 144
 145
 146
 147
 148
 149
 150
 151
 152
 153
 154
 155
 156
 157
 158
 159
 160 //--------------------------------------------------------------------------------
 161 // wxHtmlPrintout
 162 //--------------------------------------------------------------------------------
 163
 164
 165
 166 wxHtmlPrintout::wxHtmlPrintout(const wxString& title) : wxPrintout(title)
 167 {
 168     m_Renderer = new wxHtmlDCRenderer;
 169     m_RendererHdr = new wxHtmlDCRenderer;
 170     m_NumPages = wxHTML_PRINT_MAX_PAGES;
 171     m_Document = m_BasePath = wxEmptyString; m_BasePathIsDir = TRUE;
 172     m_Headers[0] = m_Headers[1] = wxEmptyString;
 173     m_Footers[0] = m_Footers[1] = wxEmptyString;
 174     m_HeaderHeight = m_FooterHeight = 0;
 175     SetMargins(); // to default values
 176 }
 177
 178
 179
 180 wxHtmlPrintout::~wxHtmlPrintout()
 181 {
 182     delete m_Renderer;
 183     delete m_RendererHdr;
 184 }
 185
 186
 187
 188 bool wxHtmlPrintout::OnBeginDocument(int startPage, int endPage)
 189 {
 190     int pageWidth, pageHeight, mm_w, mm_h;
 191     float ppmm_h, ppmm_v;
 192
 193     if (!wxPrintout::OnBeginDocument(startPage, endPage)) return FALSE;
 194
 195     GetPageSizePixels(&pageWidth, &pageHeight);
 196     GetPageSizeMM(&mm_w, &mm_h);
 197     ppmm_h = (float)pageWidth / mm_w;
 198     ppmm_v = (float)pageHeight / mm_h;
 199
 200     /* prepare headers/footers renderer: */
 201
 202     m_RendererHdr -> SetDC(GetDC(), pageWidth);
 203     m_RendererHdr -> SetSize(ppmm_h * (mm_w - m_MarginLeft - m_MarginTop),
 204                           ppmm_v * (mm_h - m_MarginTop - m_MarginBottom));
 205     if (m_Headers[0] != wxEmptyString) {
 206         m_RendererHdr -> SetHtmlText(TranslateHeader(m_Headers[0], 1));
 207         m_HeaderHeight = m_RendererHdr -> GetTotalHeight();
 208     }
 209     else if (m_Headers[1] != wxEmptyString) {
 210         m_RendererHdr -> SetHtmlText(TranslateHeader(m_Headers[1], 1));
 211         m_HeaderHeight = m_RendererHdr -> GetTotalHeight();
 212     }
 213     if (m_Footers[0] != wxEmptyString) {
 214         m_RendererHdr -> SetHtmlText(TranslateHeader(m_Footers[0], 1));
 215         m_FooterHeight = m_RendererHdr -> GetTotalHeight();
 216     }
 217     else if (m_Footers[1] != wxEmptyString) {
 218         m_RendererHdr -> SetHtmlText(TranslateHeader(m_Footers[1], 1));
 219         m_FooterHeight = m_RendererHdr -> GetTotalHeight();
 220     }
 221
 222     /* prepare main renderer: */
 223     m_Renderer -> SetDC(GetDC(), pageWidth);
 224     m_Renderer -> SetSize(ppmm_h * (mm_w - m_MarginLeft - m_MarginTop),
 225                           ppmm_v * (mm_h - m_MarginTop - m_MarginBottom) -
 226                           m_FooterHeight - m_HeaderHeight -
 227                           ((m_HeaderHeight == 0) ? 0 : m_MarginSpace * ppmm_v) -
 228                           ((m_FooterHeight == 0) ? 0 : m_MarginSpace * ppmm_v)
 229                           );
 230     m_Renderer -> SetHtmlText(m_Document, m_BasePath, m_BasePathIsDir);
 231     CountPages();
 232     return TRUE;
 233 }
 234
 235
 236 bool wxHtmlPrintout::OnPrintPage(int page)
 237 {
 238     wxDC *dc = GetDC();
 239     if (dc) {
 240         if (HasPage(page))
 241             RenderPage(dc, page);
 242         return TRUE;
 243     } else
 244         return FALSE;
 245 }
 246
 247
 248 void wxHtmlPrintout::GetPageInfo(int *minPage, int *maxPage, int *selPageFrom, int *selPageTo)
 249 {
 250     *minPage = 1;
 251     *maxPage = wxHTML_PRINT_MAX_PAGES;
 252     *selPageFrom = 1;
 253     *selPageTo = wxHTML_PRINT_MAX_PAGES;
 254 }
 255
 256
 257
 258 bool wxHtmlPrintout::HasPage(int pageNum)
 259 {
 260     return (pageNum >= 1 && pageNum <= m_NumPages);
 261 }
 262
 263
 264
 265 void wxHtmlPrintout::SetHtmlText(const wxString& html, const wxString &basepath, bool isdir)
 266 {
 267     m_Document = html;
 268     m_BasePath = basepath;
 269     m_BasePathIsDir = isdir;
 270 }
 271
 272
 273
 274 void wxHtmlPrintout::SetHtmlFile(const wxString& htmlfile)
 275 {
 276     wxFileSystem fs;
 277     wxFSFile *ff = fs.OpenFile(htmlfile);
 278     wxInputStream *st = ff -> GetStream();
 279     char *t = new char[st -> GetSize() + 1];
 280     st -> Read(t, st -> GetSize());
 281     t[st -> GetSize()] = 0;
 282
 283     wxString doc = wxString(t);
 284     delete t;
 285     delete ff;
 286
 287     SetHtmlText(doc, htmlfile, FALSE);
 288 }
 289
 290
 291
 292 void wxHtmlPrintout::SetHeader(const wxString& header, int pg)
 293 {
 294     if (pg == wxPAGE_ALL || pg == wxPAGE_EVEN)
 295         m_Headers[0] = header;
 296     if (pg == wxPAGE_ALL || pg == wxPAGE_ODD)
 297         m_Headers[1] = header;
 298 }
 299
 300
 301
 302 void wxHtmlPrintout::SetFooter(const wxString& footer, int pg)
 303 {
 304     if (pg == wxPAGE_ALL || pg == wxPAGE_EVEN)
 305         m_Footers[0] = footer;
 306     if (pg == wxPAGE_ALL || pg == wxPAGE_ODD)
 307         m_Footers[1] = footer;
 308 }
 309
 310
 311
 312 void wxHtmlPrintout::CountPages()
 313 {
 314     wxBusyCursor wait;
 315     int pageWidth, pageHeight, mm_w, mm_h;
 316     float ppmm_h, ppmm_v;
 317
 318     GetPageSizePixels(&pageWidth, &pageHeight);
 319     GetPageSizeMM(&mm_w, &mm_h);
 320     ppmm_h = (float)pageWidth / mm_w;
 321     ppmm_v = (float)pageHeight / mm_h;
 322
 323     int pos = 0;
 324
 325     m_NumPages = 0;
 326
 327     m_PageBreaks[0] = 0;
 328     do {
 329         pos = m_Renderer -> Render(ppmm_h * m_MarginLeft,
 330                                    ppmm_v * (m_MarginTop + (m_HeaderHeight == 0 ? 0 : m_MarginSpace)) + m_HeaderHeight,
 331                                    pos, TRUE);
 332         m_PageBreaks[++m_NumPages] = pos;
 333     } while (pos < m_Renderer -> GetTotalHeight());
 334 }
 335
 336
 337
 338 void wxHtmlPrintout::RenderPage(wxDC *dc, int page)
 339 {
 340     wxBusyCursor wait;
 341
 342     int pageWidth, pageHeight, mm_w, mm_h;
 343     float ppmm_h, ppmm_v;
 344
 345     GetPageSizePixels(&pageWidth, &pageHeight);
 346     GetPageSizeMM(&mm_w, &mm_h);
 347     ppmm_h = (float)pageWidth / mm_w;
 348     ppmm_v = (float)pageHeight / mm_h;
 349
 350     m_Renderer -> SetDC(dc, pageWidth);
 351
 352     dc -> SetBackgroundMode(wxTRANSPARENT);
 353
 354     m_Renderer -> Render(ppmm_h * m_MarginLeft,
 355                          ppmm_v * (m_MarginTop + (m_HeaderHeight == 0 ? 0 : m_MarginSpace)) + m_HeaderHeight,
 356                          m_PageBreaks[page-1]);
 357
 358     m_RendererHdr -> SetDC(dc, pageWidth);
 359     if (m_Headers[page % 2] != wxEmptyString) {
 360         m_RendererHdr -> SetHtmlText(TranslateHeader(m_Headers[page % 2], page));
 361         m_RendererHdr -> Render(ppmm_h * m_MarginLeft, ppmm_v * m_MarginTop);
 362     }
 363     if (m_Footers[page % 2] != wxEmptyString) {
 364         m_RendererHdr -> SetHtmlText(TranslateHeader(m_Footers[page % 2], page));
 365         m_RendererHdr -> Render(ppmm_h * m_MarginLeft, pageHeight - ppmm_v * m_MarginBottom - m_FooterHeight);
 366     }
 367 }
 368
 369
 370
 371 wxString wxHtmlPrintout::TranslateHeader(const wxString& instr, int page)
 372 {
 373     wxString r = instr;
 374     wxString num;
 375
 376     num.Printf(wxT("%i"), page);
 377     r.Replace(wxT("@PAGENUM@"), num);
 378
 379     num.Printf(wxT("%i"), m_NumPages);
 380     r.Replace(wxT("@PAGESCNT@"), num);
 381
 382     return r;
 383 }
 384
 385
 386
 387 void wxHtmlPrintout::SetMargins(float top, float bottom, float left, float right, float spaces)
 388 {
 389     m_MarginTop = top;
 390     m_MarginBottom = bottom;
 391     m_MarginLeft = left;
 392     m_MarginRight = right;
 393     m_MarginSpace = spaces;
 394 }
 395
 396
 397
 398
 399
 400
 401 //--------------------------------------------------------------------------------
 402 // wxHtmlEasyPrinting
 403 //--------------------------------------------------------------------------------
 404
 405
 406 wxHtmlEasyPrinting::wxHtmlEasyPrinting(const wxString& name, wxFrame *parent_frame)
 407 {
 408     m_Frame = parent_frame;
 409     m_Name = name;
 410     m_PrintData = new wxPrintData;
 411 #if (defined __WXGTK__) || (defined __WXMOTIF__)
 412     (*m_PrintData) = (*wxThePrintSetupData);
 413 #endif
 414     m_PageSetupData = new wxPageSetupDialogData;
 415     m_Headers[0] = m_Headers[1] = m_Footers[0] = m_Footers[1] = wxEmptyString;
 416
 417     m_PageSetupData -> EnableMargins(TRUE);
 418     m_PageSetupData -> SetMarginTopLeft(wxPoint(25, 25));
 419     m_PageSetupData -> SetMarginBottomRight(wxPoint(25, 25));
 420 }
 421
 422
 423
 424 wxHtmlEasyPrinting::~wxHtmlEasyPrinting()
 425 {
 426     delete m_PrintData;
 427     delete m_PageSetupData;
 428 }
 429
 430
 431
 432 void wxHtmlEasyPrinting::PreviewFile(const wxString &htmlfile)
 433 {
 434     wxHtmlPrintout *p1 = CreatePrintout();
 435     p1 -> SetHtmlFile(htmlfile);
 436     wxHtmlPrintout *p2 = CreatePrintout();
 437     p2 -> SetHtmlFile(htmlfile);
 438     DoPreview(p1, p2);
 439 }
 440
 441
 442
 443 void wxHtmlEasyPrinting::PreviewText(const wxString &htmltext, const wxString &basepath)
 444 {
 445     wxHtmlPrintout *p1 = CreatePrintout();
 446     p1 -> SetHtmlText(htmltext, basepath, TRUE);
 447     wxHtmlPrintout *p2 = CreatePrintout();
 448     p2 -> SetHtmlText(htmltext, basepath, TRUE);
 449     DoPreview(p1, p2);
 450 }
 451
 452
 453
 454 void wxHtmlEasyPrinting::PrintFile(const wxString &htmlfile)
 455 {
 456     wxHtmlPrintout *p = CreatePrintout();
 457     p -> SetHtmlFile(htmlfile);
 458     DoPrint(p);
 459 }
 460
 461
 462
 463 void wxHtmlEasyPrinting::PrintText(const wxString &htmltext, const wxString &basepath)
 464 {
 465     wxHtmlPrintout *p = CreatePrintout();
 466     p -> SetHtmlText(htmltext, basepath, TRUE);
 467     DoPrint(p);
 468 }
 469
 470
 471
 472 void wxHtmlEasyPrinting::DoPreview(wxHtmlPrintout *printout1, wxHtmlPrintout *printout2)
 473 {
 474     // Pass two printout objects: for preview, and possible printing.
 475     wxPrintDialogData printDialogData(*m_PrintData);
 476     wxPrintPreview *preview = new wxPrintPreview(printout1, printout2, &printDialogData);
 477     if (!preview -> Ok()) {
 478         delete preview;
 479         wxMessageBox(_("There was a problem previewing.\nPerhaps your current printer is not set correctly?"), _("Previewing"), wxOK);
 480     }
 481
 482     else {
 483         wxPreviewFrame *frame = new wxPreviewFrame(preview, m_Frame,
 484                                                    m_Name + _(" Preview"),
 485                                                    wxPoint(100, 100), wxSize(650, 500));
 486         frame -> Centre(wxBOTH);
 487         frame -> Initialize();
 488         frame -> Show(TRUE);
 489     }
 490 }
 491
 492
 493
 494 void wxHtmlEasyPrinting::DoPrint(wxHtmlPrintout *printout)
 495 {
 496     wxPrintDialogData printDialogData(*m_PrintData);
 497     wxPrinter printer(&printDialogData);
 498
 499     if (!printer.Print(m_Frame, printout, TRUE))
 500         wxMessageBox(_("There was a problem printing.\nPerhaps your current printer is not set correctly?"), _("Printing"), wxOK);
 501     else
 502         (*m_PrintData) = printer.GetPrintDialogData().GetPrintData();
 503 }
 504
 505
 506
 507 void wxHtmlEasyPrinting::PrinterSetup()
 508 {
 509     wxPrintDialogData printDialogData(*m_PrintData);
 510     wxPrintDialog printerDialog(m_Frame, &printDialogData);
 511
 512     printerDialog.GetPrintDialogData().SetSetupDialog(TRUE);
 513
 514     if (printerDialog.ShowModal() == wxID_OK)
 515         (*m_PrintData) = printerDialog.GetPrintDialogData().GetPrintData();
 516 }
 517
 518
 519
 520 void wxHtmlEasyPrinting::PageSetup()
 521 {
 522     m_PageSetupData -> SetPrintData(*m_PrintData);
 523     wxPageSetupDialog pageSetupDialog(m_Frame, m_PageSetupData);
 524
 525     if (pageSetupDialog.ShowModal() == wxID_OK) {
 526         (*m_PrintData) = pageSetupDialog.GetPageSetupData().GetPrintData();
 527         (*m_PageSetupData) = pageSetupDialog.GetPageSetupData();
 528     }
 529 }
 530
 531
 532
 533 void wxHtmlEasyPrinting::SetHeader(const wxString& header, int pg)
 534 {
 535     if (pg == wxPAGE_ALL || pg == wxPAGE_EVEN)
 536         m_Headers[0] = header;
 537     if (pg == wxPAGE_ALL || pg == wxPAGE_ODD)
 538         m_Headers[1] = header;
 539 }
 540
 541
 542
 543 void wxHtmlEasyPrinting::SetFooter(const wxString& footer, int pg)
 544 {
 545     if (pg == wxPAGE_ALL || pg == wxPAGE_EVEN)
 546         m_Footers[0] = footer;
 547     if (pg == wxPAGE_ALL || pg == wxPAGE_ODD)
 548         m_Footers[1] = footer;
 549 }
 550
 551
 552
 553 wxHtmlPrintout *wxHtmlEasyPrinting::CreatePrintout()
 554 {
 555     wxHtmlPrintout *p = new wxHtmlPrintout(m_Name);
 556
 557     p -> SetHeader(m_Headers[0], wxPAGE_EVEN);
 558     p -> SetHeader(m_Headers[1], wxPAGE_ODD);
 559     p -> SetFooter(m_Footers[0], wxPAGE_EVEN);
 560     p -> SetFooter(m_Footers[1], wxPAGE_ODD);
 561
 562     p -> SetMargins(m_PageSetupData -> GetMarginTopLeft().y,
 563                     m_PageSetupData -> GetMarginBottomRight().y,
 564                     m_PageSetupData -> GetMarginTopLeft().x,
 565                     m_PageSetupData -> GetMarginBottomRight().x);
 566
 567     return p;
 568 }
 569
 570
 571
 572 #endif // wxUSE_HTML & wxUSE_PRINTING_ARCHITECTURE