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 #ifdef __BORLANDC__
  20 #pragma hdrstop
  21 #endif
  22
  23 #ifndef WX_PRECOMP
  24 #include "wx/wx.h"
  25 #endif
  26
  27 #if wxUSE_PRINTING_ARCHITECTURE
  28
  29 #include "wx/print.h"
  30 #include "wx/printdlg.h"
  31 #include "wx/html/htmprint.h"
  32 #include "wx/wxhtml.h"
  33 #include "wx/wfstream.h"
  34
  35
  36 //--------------------------------------------------------------------------------
  37 // wxHtmlDCRenderer
  38 //--------------------------------------------------------------------------------
  39
  40
  41 wxHtmlDCRenderer::wxHtmlDCRenderer() : wxObject()
  42 {
  43     m_DC = NULL;
  44     m_Width = m_Height = 0;
  45     m_Cells = NULL;
  46     m_Parser = new wxHtmlWinParser(NULL);
  47     m_FS = new wxFileSystem();
  48     m_Parser -> SetFS(m_FS);
  49     m_Scale = 1.0;
  50 }
  51
  52
  53
  54 wxHtmlDCRenderer::~wxHtmlDCRenderer()
  55 {
  56     if (m_Cells) delete m_Cells;
  57     if (m_Parser) delete m_Parser;
  58     if (m_FS) delete m_FS;
  59 }
  60
  61
  62
  63 void wxHtmlDCRenderer::SetDC(wxDC *dc, int maxwidth)
  64 {
  65     int dx, dy;
  66
  67     wxDisplaySize(&dx, &dy);
  68     m_MaxWidth = maxwidth;
  69 #if 0
  70     m_Scale = (float)dx * 2 / 3 / (float)maxwidth;
  71             // let the width of A4 is approximately 2/3 the screen width
  72 #endif
  73     m_Scale = (float)800 / (float)maxwidth;
  74             // for now, assume screen width = 800 => good results
  75
  76     m_DC = dc;
  77     m_Parser -> SetDC(dc);
  78 }
  79
  80
  81
  82 void wxHtmlDCRenderer::SetSize(int width, int height)
  83 {
  84     m_Width = (int)(width * m_Scale);
  85     m_Height = (int)(height * m_Scale);
  86 }
  87
  88
  89
  90 void wxHtmlDCRenderer::SetHtmlText(const wxString& html, const wxString& basepath, bool isdir)
  91 {
  92     if (m_DC == NULL) return;
  93
  94     if (m_Cells != NULL) delete m_Cells;
  95
  96     m_FS -> ChangePathTo(basepath, isdir);
  97     m_DC -> SetUserScale(1.0, 1.0);
  98     m_Cells = (wxHtmlContainerCell*) m_Parser -> Parse(html);
  99     m_Cells -> SetIndent(0, HTML_INDENT_ALL, HTML_UNITS_PIXELS);
 100     m_Cells -> Layout(m_Width);
 101 }
 102
 103
 104
 105 int wxHtmlDCRenderer::Render(int x, int y, int from, int dont_render)
 106 {
 107     int pbreak;
 108
 109     if (m_Cells == NULL || m_DC == NULL) return 0;
 110
 111     pbreak = (int)(from * m_Scale + m_Height);
 112     while (m_Cells -> AdjustPagebreak(&pbreak)) {}
 113
 114     if (!dont_render) {
 115         int w, h;
 116         m_DC -> GetSize(&w, &h);
 117         float overallScale = (float)(w/(float)m_MaxWidth) / m_Scale;
 118         m_DC -> SetUserScale(overallScale, overallScale);
 119
 120         m_DC -> SetBrush(*wxWHITE_BRUSH);
 121
 122         m_DC -> SetClippingRegion(x * m_Scale, y * m_Scale, m_Width, m_Height);
 123         m_Cells -> Draw(*m_DC,
 124                         x * m_Scale, (y - from) * m_Scale,
 125                         y * m_Scale, pbreak + (y - from) * m_Scale);
 126         m_DC -> DestroyClippingRegion();
 127     }
 128
 129     if (pbreak < m_Cells -> GetHeight()) return (int)(pbreak / m_Scale);
 130     else return GetTotalHeight();
 131 }
 132
 133
 134
 135 int wxHtmlDCRenderer::GetTotalHeight()
 136 {
 137     if (m_Cells) return (int)(m_Cells -> GetHeight() / m_Scale);
 138     else return 0;
 139 }
 140
 141
 142
 143
 144
 145
 146
 147
 148
 149
 150
 151
 152
 153
 154
 155
 156 //--------------------------------------------------------------------------------
 157 // wxHtmlPrintout
 158 //--------------------------------------------------------------------------------
 159
 160
 161
 162 wxHtmlPrintout::wxHtmlPrintout(const wxString& title) : wxPrintout(title)
 163 {
 164     m_Renderer = new wxHtmlDCRenderer;
 165     m_RendererHdr = new wxHtmlDCRenderer;
 166     m_NumPages = HTML_PRINT_MAX_PAGES;
 167     m_Document = m_BasePath = wxEmptyString; m_BasePathIsDir = TRUE;
 168     m_Headers[0] = m_Headers[1] = wxEmptyString;
 169     m_Footers[0] = m_Footers[1] = wxEmptyString;
 170     m_HeaderHeight = m_FooterHeight = 0;
 171     SetMargins(); // to default values
 172 }
 173
 174
 175
 176 wxHtmlPrintout::~wxHtmlPrintout()
 177 {
 178     delete m_Renderer;
 179     delete m_RendererHdr;
 180 }
 181
 182
 183
 184 bool wxHtmlPrintout::OnBeginDocument(int start, int end)
 185 {
 186     int pageWidth, pageHeight, mm_w, mm_h;
 187     float ppmm_h, ppmm_v;
 188
 189     if (!wxPrintout::OnBeginDocument(start, end)) return FALSE;
 190
 191     GetPageSizePixels(&pageWidth, &pageHeight);
 192     GetPageSizeMM(&mm_w, &mm_h);
 193     ppmm_h = (float)pageWidth / mm_w;
 194     ppmm_v = (float)pageHeight / mm_h;
 195
 196     /* prepare headers/footers renderer: */
 197
 198     m_RendererHdr -> SetDC(GetDC(), pageWidth);
 199     m_RendererHdr -> SetSize(ppmm_h * (mm_w - m_MarginLeft - m_MarginTop),
 200                           ppmm_v * (mm_h - m_MarginTop - m_MarginBottom));
 201     if (m_Headers[0] != wxEmptyString) {
 202         m_RendererHdr -> SetHtmlText(TranslateHeader(m_Headers[0], 1));
 203         m_HeaderHeight = m_RendererHdr -> GetTotalHeight();
 204     }
 205     else if (m_Headers[1] != wxEmptyString) {
 206         m_RendererHdr -> SetHtmlText(TranslateHeader(m_Headers[1], 1));
 207         m_HeaderHeight = m_RendererHdr -> GetTotalHeight();
 208     }
 209     if (m_Footers[0] != wxEmptyString) {
 210         m_RendererHdr -> SetHtmlText(TranslateHeader(m_Footers[0], 1));
 211         m_FooterHeight = m_RendererHdr -> GetTotalHeight();
 212     }
 213     else if (m_Footers[1] != wxEmptyString) {
 214         m_RendererHdr -> SetHtmlText(TranslateHeader(m_Footers[1], 1));
 215         m_FooterHeight = m_RendererHdr -> GetTotalHeight();
 216     }
 217
 218     /* prepare main renderer: */
 219     m_Renderer -> SetDC(GetDC(), pageWidth);
 220     m_Renderer -> SetSize(ppmm_h * (mm_w - m_MarginLeft - m_MarginTop),
 221                           ppmm_v * (mm_h - m_MarginTop - m_MarginBottom) -
 222                           m_FooterHeight - m_HeaderHeight -
 223                           ((m_HeaderHeight == 0) ? 0 : m_MarginSpace * ppmm_v) -
 224                           ((m_FooterHeight == 0) ? 0 : m_MarginSpace * ppmm_v)
 225                           );
 226     m_Renderer -> SetHtmlText(m_Document, m_BasePath, m_BasePathIsDir);
 227     CountPages();
 228
 229     return TRUE;
 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 = HTML_PRINT_MAX_PAGES;
 249     *selPageFrom = 1;
 250     *selPageTo = 1;
 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     m_PageSetupData = new wxPageSetupDialogData;
 409     m_Headers[0] = m_Headers[1] = m_Footers[0] = m_Footers[1] = wxEmptyString;
 410
 411     m_PageSetupData -> EnableMargins(TRUE);
 412     m_PageSetupData -> SetMarginTopLeft(wxPoint(25, 25));
 413     m_PageSetupData -> SetMarginBottomRight(wxPoint(25, 25));
 414
 415 #if defined(__WXGTK__) || defined(__WXMOTIF__)
 416     m_PrintData -> SetPrinterCommand("lpr");
 417 #endif
 418 }
 419
 420
 421
 422 wxHtmlEasyPrinting::~wxHtmlEasyPrinting()
 423 {
 424     delete m_PrintData;
 425     delete m_PageSetupData;
 426 }
 427
 428
 429
 430 void wxHtmlEasyPrinting::PreviewFile(const wxString &htmlfile)
 431 {
 432     wxHtmlPrintout *p1 = CreatePrintout();
 433     p1 -> SetHtmlFile(htmlfile);
 434     wxHtmlPrintout *p2 = CreatePrintout();
 435     p2 -> SetHtmlFile(htmlfile);
 436     DoPreview(p1, p2);
 437 }
 438
 439
 440
 441 void wxHtmlEasyPrinting::PreviewText(const wxString &htmltext, const wxString &basepath)
 442 {
 443     wxHtmlPrintout *p1 = CreatePrintout();
 444     p1 -> SetHtmlText(htmltext, basepath, TRUE);
 445     wxHtmlPrintout *p2 = CreatePrintout();
 446     p2 -> SetHtmlText(htmltext, basepath, TRUE);
 447     DoPreview(p1, p2);
 448 }
 449
 450
 451
 452 void wxHtmlEasyPrinting::PrintFile(const wxString &htmlfile)
 453 {
 454     wxHtmlPrintout *p = CreatePrintout();
 455     p -> SetHtmlFile(htmlfile);
 456     DoPrint(p);
 457 }
 458
 459
 460
 461 void wxHtmlEasyPrinting::PrintText(const wxString &htmltext, const wxString &basepath)
 462 {
 463     wxHtmlPrintout *p = CreatePrintout();
 464     p -> SetHtmlText(htmltext, basepath, TRUE);
 465     DoPrint(p);
 466 }
 467
 468
 469
 470 void wxHtmlEasyPrinting::DoPreview(wxHtmlPrintout *printout1, wxHtmlPrintout *printout2)
 471 {
 472     // Pass two printout objects: for preview, and possible printing.
 473     wxPrintDialogData printDialogData(*m_PrintData);
 474     wxPrintPreview *preview = new wxPrintPreview(printout1, printout2, &printDialogData);
 475     if (!preview -> Ok()) {
 476         delete preview;
 477         wxMessageBox(_("There was a problem previewing.\nPerhaps your current printer is not set correctly?"), _("Previewing"), wxOK);
 478     }
 479
 480     else {
 481         wxPreviewFrame *frame = new wxPreviewFrame(preview, m_Frame,
 482                                                    m_Name + _(" Preview"),
 483                                                    wxPoint(100, 100), wxSize(500, 500));
 484         frame -> Centre(wxBOTH);
 485         frame -> Initialize();
 486         frame -> Show(TRUE);
 487     }
 488 }
 489
 490
 491
 492 void wxHtmlEasyPrinting::DoPrint(wxHtmlPrintout *printout)
 493 {
 494     wxPrintDialogData printDialogData(*m_PrintData);
 495     wxPrinter printer(&printDialogData);
 496
 497     if (!printer.Print(m_Frame, printout, TRUE))
 498         wxMessageBox(_("There was a problem printing.\nPerhaps your current printer is not set correctly?"), _("Printing"), wxOK);
 499     else
 500         (*m_PrintData) = printer.GetPrintDialogData().GetPrintData();
 501 }
 502
 503
 504
 505 void wxHtmlEasyPrinting::PrinterSetup()
 506 {
 507     wxPrintDialogData printDialogData(*m_PrintData);
 508     wxPrintDialog printerDialog(m_Frame, &printDialogData);
 509
 510     printerDialog.GetPrintDialogData().SetSetupDialog(TRUE);
 511
 512     if (printerDialog.ShowModal() == wxID_OK)
 513         (*m_PrintData) = printerDialog.GetPrintDialogData().GetPrintData();
 514 }
 515
 516
 517
 518 void wxHtmlEasyPrinting::PageSetup()
 519 {
 520     m_PageSetupData -> SetPrintData(*m_PrintData);
 521     wxPageSetupDialog pageSetupDialog(m_Frame, m_PageSetupData);
 522
 523     if (pageSetupDialog.ShowModal() == wxID_OK) {
 524         (*m_PrintData) = pageSetupDialog.GetPageSetupData().GetPrintData();
 525         (*m_PageSetupData) = pageSetupDialog.GetPageSetupData();
 526     }
 527 }
 528
 529
 530
 531 void wxHtmlEasyPrinting::SetHeader(const wxString& header, int pg)
 532 {
 533     if (pg == wxPAGE_ALL || pg == wxPAGE_EVEN)
 534         m_Headers[0] = header;
 535     if (pg == wxPAGE_ALL || pg == wxPAGE_ODD)
 536         m_Headers[1] = header;
 537 }
 538
 539
 540
 541 void wxHtmlEasyPrinting::SetFooter(const wxString& footer, int pg)
 542 {
 543     if (pg == wxPAGE_ALL || pg == wxPAGE_EVEN)
 544         m_Footers[0] = footer;
 545     if (pg == wxPAGE_ALL || pg == wxPAGE_ODD)
 546         m_Footers[1] = footer;
 547 }
 548
 549
 550
 551 wxHtmlPrintout *wxHtmlEasyPrinting::CreatePrintout()
 552 {
 553     wxHtmlPrintout *p = new wxHtmlPrintout(m_Name);
 554
 555     p -> SetHeader(m_Headers[0], wxPAGE_EVEN);
 556     p -> SetHeader(m_Headers[1], wxPAGE_ODD);
 557     p -> SetFooter(m_Footers[0], wxPAGE_EVEN);
 558     p -> SetFooter(m_Footers[1], wxPAGE_ODD);
 559
 560     p -> SetMargins(m_PageSetupData -> GetMarginTopLeft().y,
 561                     m_PageSetupData -> GetMarginBottomRight().y,
 562                     m_PageSetupData -> GetMarginTopLeft().x,
 563                     m_PageSetupData -> GetMarginBottomRight().x);
 564
 565     return p;
 566 }
 567
 568
 569
 570 #endif // wxUSE_PRINTING_ARCHITECTURE