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_HTML & 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, wxHTML_INDENT_ALL, wxHTML_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 = wxHTML_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 void wxHtmlPrintout::OnBeginPrinting()
 185 {
 186     int pageWidth, pageHeight, mm_w, mm_h;
 187     float ppmm_h, ppmm_v;
 188
 189     wxPrintout::OnBeginPrinting();
 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
 230
 231 bool wxHtmlPrintout::OnPrintPage(int page)
 232 {
 233     wxDC *dc = GetDC();
 234     if (dc) {
 235         if (HasPage(page))
 236             RenderPage(dc, page);
 237         return TRUE;
 238     } else
 239         return FALSE;
 240 }
 241
 242
 243 void wxHtmlPrintout::GetPageInfo(int *minPage, int *maxPage, int *selPageFrom, int *selPageTo)
 244 {
 245     *minPage = 1;
 246     *maxPage = wxHTML_PRINT_MAX_PAGES;
 247     *selPageFrom = 1;
 248     *selPageTo = wxHTML_PRINT_MAX_PAGES;
 249 }
 250
 251
 252
 253 bool wxHtmlPrintout::HasPage(int pageNum)
 254 {
 255     return (pageNum >= 1 && pageNum <= m_NumPages);
 256 }
 257
 258
 259
 260 void wxHtmlPrintout::SetHtmlText(const wxString& html, const wxString &basepath, bool isdir)
 261 {
 262     m_Document = html;
 263     m_BasePath = basepath;
 264     m_BasePathIsDir = isdir;
 265 }
 266
 267
 268
 269 void wxHtmlPrintout::SetHtmlFile(const wxString& htmlfile)
 270 {
 271     wxFileSystem fs;
 272     wxFSFile *ff = fs.OpenFile(htmlfile);
 273     wxInputStream *st = ff -> GetStream();
 274     char *t = new char[st -> GetSize() + 1];
 275     st -> Read(t, st -> GetSize());
 276     t[st -> GetSize()] = 0;
 277
 278     wxString doc = wxString(t);
 279     delete t;
 280     delete ff;
 281
 282     SetHtmlText(doc, htmlfile, FALSE);
 283 }
 284
 285
 286
 287 void wxHtmlPrintout::SetHeader(const wxString& header, int pg)
 288 {
 289     if (pg == wxPAGE_ALL || pg == wxPAGE_EVEN)
 290         m_Headers[0] = header;
 291     if (pg == wxPAGE_ALL || pg == wxPAGE_ODD)
 292         m_Headers[1] = header;
 293 }
 294
 295
 296
 297 void wxHtmlPrintout::SetFooter(const wxString& footer, int pg)
 298 {
 299     if (pg == wxPAGE_ALL || pg == wxPAGE_EVEN)
 300         m_Footers[0] = footer;
 301     if (pg == wxPAGE_ALL || pg == wxPAGE_ODD)
 302         m_Footers[1] = footer;
 303 }
 304
 305
 306
 307 void wxHtmlPrintout::CountPages()
 308 {
 309     wxBusyCursor wait;
 310     int pageWidth, pageHeight, mm_w, mm_h;
 311     float ppmm_h, ppmm_v;
 312
 313     GetPageSizePixels(&pageWidth, &pageHeight);
 314     GetPageSizeMM(&mm_w, &mm_h);
 315     ppmm_h = (float)pageWidth / mm_w;
 316     ppmm_v = (float)pageHeight / mm_h;
 317
 318     int pos = 0;
 319
 320     m_NumPages = 0;
 321
 322     m_PageBreaks[0] = 0;
 323     do {
 324         pos = m_Renderer -> Render(ppmm_h * m_MarginLeft,
 325                                    ppmm_v * (m_MarginTop + (m_HeaderHeight == 0 ? 0 : m_MarginSpace)) + m_HeaderHeight,
 326                                    pos, TRUE);
 327         m_PageBreaks[++m_NumPages] = pos;
 328     } while (pos < m_Renderer -> GetTotalHeight());
 329 }
 330
 331
 332
 333 void wxHtmlPrintout::RenderPage(wxDC *dc, int page)
 334 {
 335     wxBusyCursor wait;
 336
 337     int pageWidth, pageHeight, mm_w, mm_h;
 338     float ppmm_h, ppmm_v;
 339
 340     GetPageSizePixels(&pageWidth, &pageHeight);
 341     GetPageSizeMM(&mm_w, &mm_h);
 342     ppmm_h = (float)pageWidth / mm_w;
 343     ppmm_v = (float)pageHeight / mm_h;
 344
 345     m_Renderer -> SetDC(dc, pageWidth);
 346
 347     dc -> SetBackgroundMode(wxTRANSPARENT);
 348
 349     m_Renderer -> Render(ppmm_h * m_MarginLeft,
 350                          ppmm_v * (m_MarginTop + (m_HeaderHeight == 0 ? 0 : m_MarginSpace)) + m_HeaderHeight,
 351                          m_PageBreaks[page-1]);
 352
 353     m_RendererHdr -> SetDC(dc, pageWidth);
 354     if (m_Headers[page % 2] != wxEmptyString) {
 355         m_RendererHdr -> SetHtmlText(TranslateHeader(m_Headers[page % 2], page));
 356         m_RendererHdr -> Render(ppmm_h * m_MarginLeft, ppmm_v * m_MarginTop);
 357     }
 358     if (m_Footers[page % 2] != wxEmptyString) {
 359         m_RendererHdr -> SetHtmlText(TranslateHeader(m_Footers[page % 2], page));
 360         m_RendererHdr -> Render(ppmm_h * m_MarginLeft, pageHeight - ppmm_v * m_MarginBottom - m_FooterHeight);
 361     }
 362 }
 363
 364
 365
 366 wxString wxHtmlPrintout::TranslateHeader(const wxString& instr, int page)
 367 {
 368     wxString r = instr;
 369     wxString num;
 370
 371     num.Printf("%i", page);
 372     r.Replace("@PAGENUM@", num);
 373
 374     num.Printf("%i", m_NumPages);
 375     r.Replace("@PAGESCNT@", num);
 376
 377     return r;
 378 }
 379
 380
 381
 382 void wxHtmlPrintout::SetMargins(float top, float bottom, float left, float right, float spaces)
 383 {
 384     m_MarginTop = top;
 385     m_MarginBottom = bottom;
 386     m_MarginLeft = left;
 387     m_MarginRight = right;
 388     m_MarginSpace = spaces;
 389 }
 390
 391
 392
 393
 394
 395
 396 //--------------------------------------------------------------------------------
 397 // wxHtmlEasyPrinting
 398 //--------------------------------------------------------------------------------
 399
 400
 401 wxHtmlEasyPrinting::wxHtmlEasyPrinting(const wxString& name, wxFrame *parent_frame)
 402 {
 403     m_Frame = parent_frame;
 404     m_Name = name;
 405     m_PrintData = new wxPrintData;
 406     m_PageSetupData = new wxPageSetupDialogData;
 407     m_Headers[0] = m_Headers[1] = m_Footers[0] = m_Footers[1] = wxEmptyString;
 408
 409     m_PageSetupData -> EnableMargins(TRUE);
 410     m_PageSetupData -> SetMarginTopLeft(wxPoint(25, 25));
 411     m_PageSetupData -> SetMarginBottomRight(wxPoint(25, 25));
 412
 413 #if defined(__WXGTK__) || defined(__WXMOTIF__)
 414     m_PrintData -> SetPrinterCommand("lpr");
 415 #endif
 416 }
 417
 418
 419
 420 wxHtmlEasyPrinting::~wxHtmlEasyPrinting()
 421 {
 422     delete m_PrintData;
 423     delete m_PageSetupData;
 424 }
 425
 426
 427
 428 void wxHtmlEasyPrinting::PreviewFile(const wxString &htmlfile)
 429 {
 430     wxHtmlPrintout *p1 = CreatePrintout();
 431     p1 -> SetHtmlFile(htmlfile);
 432     wxHtmlPrintout *p2 = CreatePrintout();
 433     p2 -> SetHtmlFile(htmlfile);
 434     DoPreview(p1, p2);
 435 }
 436
 437
 438
 439 void wxHtmlEasyPrinting::PreviewText(const wxString &htmltext, const wxString &basepath)
 440 {
 441     wxHtmlPrintout *p1 = CreatePrintout();
 442     p1 -> SetHtmlText(htmltext, basepath, TRUE);
 443     wxHtmlPrintout *p2 = CreatePrintout();
 444     p2 -> SetHtmlText(htmltext, basepath, TRUE);
 445     DoPreview(p1, p2);
 446 }
 447
 448
 449
 450 void wxHtmlEasyPrinting::PrintFile(const wxString &htmlfile)
 451 {
 452     wxHtmlPrintout *p = CreatePrintout();
 453     p -> SetHtmlFile(htmlfile);
 454     DoPrint(p);
 455 }
 456
 457
 458
 459 void wxHtmlEasyPrinting::PrintText(const wxString &htmltext, const wxString &basepath)
 460 {
 461     wxHtmlPrintout *p = CreatePrintout();
 462     p -> SetHtmlText(htmltext, basepath, TRUE);
 463     DoPrint(p);
 464 }
 465
 466
 467
 468 void wxHtmlEasyPrinting::DoPreview(wxHtmlPrintout *printout1, wxHtmlPrintout *printout2)
 469 {
 470     // Pass two printout objects: for preview, and possible printing.
 471     wxPrintDialogData printDialogData(*m_PrintData);
 472     wxPrintPreview *preview = new wxPrintPreview(printout1, printout2, &printDialogData);
 473     if (!preview -> Ok()) {
 474         delete preview;
 475         wxMessageBox(_("There was a problem previewing.\nPerhaps your current printer is not set correctly?"), _("Previewing"), wxOK);
 476     }
 477
 478     else {
 479         wxPreviewFrame *frame = new wxPreviewFrame(preview, m_Frame,
 480                                                    m_Name + _(" Preview"),
 481                                                    wxPoint(100, 100), wxSize(650, 500));
 482         frame -> Centre(wxBOTH);
 483         frame -> Initialize();
 484         frame -> Show(TRUE);
 485     }
 486 }
 487
 488
 489
 490 void wxHtmlEasyPrinting::DoPrint(wxHtmlPrintout *printout)
 491 {
 492     wxPrintDialogData printDialogData(*m_PrintData);
 493     wxPrinter printer(&printDialogData);
 494
 495     if (!printer.Print(m_Frame, printout, TRUE))
 496         wxMessageBox(_("There was a problem printing.\nPerhaps your current printer is not set correctly?"), _("Printing"), wxOK);
 497     else
 498         (*m_PrintData) = printer.GetPrintDialogData().GetPrintData();
 499 }
 500
 501
 502
 503 void wxHtmlEasyPrinting::PrinterSetup()
 504 {
 505     wxPrintDialogData printDialogData(*m_PrintData);
 506     wxPrintDialog printerDialog(m_Frame, &printDialogData);
 507
 508     printerDialog.GetPrintDialogData().SetSetupDialog(TRUE);
 509
 510     if (printerDialog.ShowModal() == wxID_OK)
 511         (*m_PrintData) = printerDialog.GetPrintDialogData().GetPrintData();
 512 }
 513
 514
 515
 516 void wxHtmlEasyPrinting::PageSetup()
 517 {
 518     m_PageSetupData -> SetPrintData(*m_PrintData);
 519     wxPageSetupDialog pageSetupDialog(m_Frame, m_PageSetupData);
 520
 521     if (pageSetupDialog.ShowModal() == wxID_OK) {
 522         (*m_PrintData) = pageSetupDialog.GetPageSetupData().GetPrintData();
 523         (*m_PageSetupData) = pageSetupDialog.GetPageSetupData();
 524     }
 525 }
 526
 527
 528
 529 void wxHtmlEasyPrinting::SetHeader(const wxString& header, int pg)
 530 {
 531     if (pg == wxPAGE_ALL || pg == wxPAGE_EVEN)
 532         m_Headers[0] = header;
 533     if (pg == wxPAGE_ALL || pg == wxPAGE_ODD)
 534         m_Headers[1] = header;
 535 }
 536
 537
 538
 539 void wxHtmlEasyPrinting::SetFooter(const wxString& footer, int pg)
 540 {
 541     if (pg == wxPAGE_ALL || pg == wxPAGE_EVEN)
 542         m_Footers[0] = footer;
 543     if (pg == wxPAGE_ALL || pg == wxPAGE_ODD)
 544         m_Footers[1] = footer;
 545 }
 546
 547
 548
 549 wxHtmlPrintout *wxHtmlEasyPrinting::CreatePrintout()
 550 {
 551     wxHtmlPrintout *p = new wxHtmlPrintout(m_Name);
 552
 553     p -> SetHeader(m_Headers[0], wxPAGE_EVEN);
 554     p -> SetHeader(m_Headers[1], wxPAGE_ODD);
 555     p -> SetFooter(m_Footers[0], wxPAGE_EVEN);
 556     p -> SetFooter(m_Footers[1], wxPAGE_ODD);
 557
 558     p -> SetMargins(m_PageSetupData -> GetMarginTopLeft().y,
 559                     m_PageSetupData -> GetMarginBottomRight().y,
 560                     m_PageSetupData -> GetMarginTopLeft().x,
 561                     m_PageSetupData -> GetMarginBottomRight().x);
 562
 563     return p;
 564 }
 565
 566
 567
 568 #endif // wxUSE_HTML & wxUSE_PRINTING_ARCHITECTURE