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;
 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
 117     if (!dont_render) {
 118         int w, h;
 119         m_DC -> GetSize(&w, &h);
 120         float overallScale = (float)(w/(float)m_MaxWidth) / m_Scale;
 121         m_DC -> SetUserScale(overallScale, overallScale);
 122
 123         m_DC -> SetBrush(*wxWHITE_BRUSH);
 124
 125         m_DC -> SetClippingRegion(x * m_Scale, y * m_Scale, m_Width, m_Height);
 126         m_Cells -> Draw(*m_DC,
 127                         x * m_Scale, (y - from) * m_Scale,
 128                         y * m_Scale, pbreak + (y - from) * m_Scale);
 129         m_DC -> DestroyClippingRegion();
 130     }
 131
 132     if (pbreak < m_Cells -> GetHeight()) return (int)(pbreak / m_Scale);
 133     else return GetTotalHeight();
 134 }
 135
 136
 137
 138 int wxHtmlDCRenderer::GetTotalHeight()
 139 {
 140     if (m_Cells) return (int)(m_Cells -> GetHeight() / m_Scale);
 141     else return 0;
 142 }
 143
 144
 145
 146
 147
 148
 149
 150
 151
 152
 153
 154
 155
 156
 157
 158
 159 //--------------------------------------------------------------------------------
 160 // wxHtmlPrintout
 161 //--------------------------------------------------------------------------------
 162
 163
 164
 165 wxHtmlPrintout::wxHtmlPrintout(const wxString& title) : wxPrintout(title)
 166 {
 167     m_Renderer = new wxHtmlDCRenderer;
 168     m_RendererHdr = new wxHtmlDCRenderer;
 169     m_NumPages = wxHTML_PRINT_MAX_PAGES;
 170     m_Document = m_BasePath = wxEmptyString; m_BasePathIsDir = TRUE;
 171     m_Headers[0] = m_Headers[1] = wxEmptyString;
 172     m_Footers[0] = m_Footers[1] = wxEmptyString;
 173     m_HeaderHeight = m_FooterHeight = 0;
 174     SetMargins(); // to default values
 175 }
 176
 177
 178
 179 wxHtmlPrintout::~wxHtmlPrintout()
 180 {
 181     delete m_Renderer;
 182     delete m_RendererHdr;
 183 }
 184
 185
 186
 187 bool wxHtmlPrintout::OnBeginDocument(int startPage, int endPage)
 188 {
 189     int pageWidth, pageHeight, mm_w, mm_h;
 190     float ppmm_h, ppmm_v;
 191
 192     if (!wxPrintout::OnBeginDocument(startPage, endPage)) return FALSE;
 193
 194     GetPageSizePixels(&pageWidth, &pageHeight);
 195     GetPageSizeMM(&mm_w, &mm_h);
 196     ppmm_h = (float)pageWidth / mm_w;
 197     ppmm_v = (float)pageHeight / mm_h;
 198
 199     /* prepare headers/footers renderer: */
 200
 201     m_RendererHdr -> SetDC(GetDC(), pageWidth);
 202     m_RendererHdr -> SetSize(ppmm_h * (mm_w - m_MarginLeft - m_MarginTop),
 203                           ppmm_v * (mm_h - m_MarginTop - m_MarginBottom));
 204     if (m_Headers[0] != wxEmptyString) {
 205         m_RendererHdr -> SetHtmlText(TranslateHeader(m_Headers[0], 1));
 206         m_HeaderHeight = m_RendererHdr -> GetTotalHeight();
 207     }
 208     else if (m_Headers[1] != wxEmptyString) {
 209         m_RendererHdr -> SetHtmlText(TranslateHeader(m_Headers[1], 1));
 210         m_HeaderHeight = m_RendererHdr -> GetTotalHeight();
 211     }
 212     if (m_Footers[0] != wxEmptyString) {
 213         m_RendererHdr -> SetHtmlText(TranslateHeader(m_Footers[0], 1));
 214         m_FooterHeight = m_RendererHdr -> GetTotalHeight();
 215     }
 216     else if (m_Footers[1] != wxEmptyString) {
 217         m_RendererHdr -> SetHtmlText(TranslateHeader(m_Footers[1], 1));
 218         m_FooterHeight = m_RendererHdr -> GetTotalHeight();
 219     }
 220
 221     /* prepare main renderer: */
 222     m_Renderer -> SetDC(GetDC(), pageWidth);
 223     m_Renderer -> SetSize(ppmm_h * (mm_w - m_MarginLeft - m_MarginTop),
 224                           ppmm_v * (mm_h - m_MarginTop - m_MarginBottom) -
 225                           m_FooterHeight - m_HeaderHeight -
 226                           ((m_HeaderHeight == 0) ? 0 : m_MarginSpace * ppmm_v) -
 227                           ((m_FooterHeight == 0) ? 0 : m_MarginSpace * ppmm_v)
 228                           );
 229     m_Renderer -> SetHtmlText(m_Document, m_BasePath, m_BasePathIsDir);
 230     CountPages();
 231     return TRUE;
 232 }
 233
 234
 235 bool wxHtmlPrintout::OnPrintPage(int page)
 236 {
 237     wxDC *dc = GetDC();
 238     if (dc) {
 239         if (HasPage(page))
 240             RenderPage(dc, page);
 241         return TRUE;
 242     } else
 243         return FALSE;
 244 }
 245
 246
 247 void wxHtmlPrintout::GetPageInfo(int *minPage, int *maxPage, int *selPageFrom, int *selPageTo)
 248 {
 249     *minPage = 1;
 250     *maxPage = wxHTML_PRINT_MAX_PAGES;
 251     *selPageFrom = 1;
 252     *selPageTo = wxHTML_PRINT_MAX_PAGES;
 253 }
 254
 255
 256
 257 bool wxHtmlPrintout::HasPage(int pageNum)
 258 {
 259     return (pageNum >= 1 && pageNum <= m_NumPages);
 260 }
 261
 262
 263
 264 void wxHtmlPrintout::SetHtmlText(const wxString& html, const wxString &basepath, bool isdir)
 265 {
 266     m_Document = html;
 267     m_BasePath = basepath;
 268     m_BasePathIsDir = isdir;
 269 }
 270
 271
 272
 273 void wxHtmlPrintout::SetHtmlFile(const wxString& htmlfile)
 274 {
 275     wxFileSystem fs;
 276     wxFSFile *ff = fs.OpenFile(htmlfile);
 277     wxInputStream *st = ff -> GetStream();
 278     char *t = new char[st -> GetSize() + 1];
 279     st -> Read(t, st -> GetSize());
 280     t[st -> GetSize()] = 0;
 281
 282     wxString doc = wxString(t);
 283     delete t;
 284     delete ff;
 285
 286     SetHtmlText(doc, htmlfile, FALSE);
 287 }
 288
 289
 290
 291 void wxHtmlPrintout::SetHeader(const wxString& header, int pg)
 292 {
 293     if (pg == wxPAGE_ALL || pg == wxPAGE_EVEN)
 294         m_Headers[0] = header;
 295     if (pg == wxPAGE_ALL || pg == wxPAGE_ODD)
 296         m_Headers[1] = header;
 297 }
 298
 299
 300
 301 void wxHtmlPrintout::SetFooter(const wxString& footer, int pg)
 302 {
 303     if (pg == wxPAGE_ALL || pg == wxPAGE_EVEN)
 304         m_Footers[0] = footer;
 305     if (pg == wxPAGE_ALL || pg == wxPAGE_ODD)
 306         m_Footers[1] = footer;
 307 }
 308
 309
 310
 311 void wxHtmlPrintout::CountPages()
 312 {
 313     wxBusyCursor wait;
 314     int pageWidth, pageHeight, mm_w, mm_h;
 315     float ppmm_h, ppmm_v;
 316
 317     GetPageSizePixels(&pageWidth, &pageHeight);
 318     GetPageSizeMM(&mm_w, &mm_h);
 319     ppmm_h = (float)pageWidth / mm_w;
 320     ppmm_v = (float)pageHeight / mm_h;
 321
 322     int pos = 0;
 323
 324     m_NumPages = 0;
 325
 326     m_PageBreaks[0] = 0;
 327     do {
 328         pos = m_Renderer -> Render(ppmm_h * m_MarginLeft,
 329                                    ppmm_v * (m_MarginTop + (m_HeaderHeight == 0 ? 0 : m_MarginSpace)) + m_HeaderHeight,
 330                                    pos, TRUE);
 331         m_PageBreaks[++m_NumPages] = pos;
 332     } while (pos < m_Renderer -> GetTotalHeight());
 333 }
 334
 335
 336
 337 void wxHtmlPrintout::RenderPage(wxDC *dc, int page)
 338 {
 339     wxBusyCursor wait;
 340
 341     int pageWidth, pageHeight, mm_w, mm_h;
 342     float ppmm_h, ppmm_v;
 343
 344     GetPageSizePixels(&pageWidth, &pageHeight);
 345     GetPageSizeMM(&mm_w, &mm_h);
 346     ppmm_h = (float)pageWidth / mm_w;
 347     ppmm_v = (float)pageHeight / mm_h;
 348
 349     m_Renderer -> SetDC(dc, pageWidth);
 350
 351     dc -> SetBackgroundMode(wxTRANSPARENT);
 352
 353     m_Renderer -> Render(ppmm_h * m_MarginLeft,
 354                          ppmm_v * (m_MarginTop + (m_HeaderHeight == 0 ? 0 : m_MarginSpace)) + m_HeaderHeight,
 355                          m_PageBreaks[page-1]);
 356
 357     m_RendererHdr -> SetDC(dc, pageWidth);
 358     if (m_Headers[page % 2] != wxEmptyString) {
 359         m_RendererHdr -> SetHtmlText(TranslateHeader(m_Headers[page % 2], page));
 360         m_RendererHdr -> Render(ppmm_h * m_MarginLeft, ppmm_v * m_MarginTop);
 361     }
 362     if (m_Footers[page % 2] != wxEmptyString) {
 363         m_RendererHdr -> SetHtmlText(TranslateHeader(m_Footers[page % 2], page));
 364         m_RendererHdr -> Render(ppmm_h * m_MarginLeft, pageHeight - ppmm_v * m_MarginBottom - m_FooterHeight);
 365     }
 366 }
 367
 368
 369
 370 wxString wxHtmlPrintout::TranslateHeader(const wxString& instr, int page)
 371 {
 372     wxString r = instr;
 373     wxString num;
 374
 375     num.Printf(wxT("%i"), page);
 376     r.Replace(wxT("@PAGENUM@"), num);
 377
 378     num.Printf(wxT("%i"), m_NumPages);
 379     r.Replace(wxT("@PAGESCNT@"), num);
 380
 381     return r;
 382 }
 383
 384
 385
 386 void wxHtmlPrintout::SetMargins(float top, float bottom, float left, float right, float spaces)
 387 {
 388     m_MarginTop = top;
 389     m_MarginBottom = bottom;
 390     m_MarginLeft = left;
 391     m_MarginRight = right;
 392     m_MarginSpace = spaces;
 393 }
 394
 395
 396
 397
 398
 399
 400 //--------------------------------------------------------------------------------
 401 // wxHtmlEasyPrinting
 402 //--------------------------------------------------------------------------------
 403
 404
 405 wxHtmlEasyPrinting::wxHtmlEasyPrinting(const wxString& name, wxFrame *parent_frame)
 406 {
 407     m_Frame = parent_frame;
 408     m_Name = name;
 409     m_PrintData = new wxPrintData;
 410 #if (defined __WXGTK__) || (defined __WXMOTIF__)
 411     (*m_PrintData) = (*wxThePrintSetupData);
 412 #endif
 413     m_PageSetupData = new wxPageSetupDialogData;
 414     m_Headers[0] = m_Headers[1] = m_Footers[0] = m_Footers[1] = wxEmptyString;
 415
 416     m_PageSetupData -> EnableMargins(TRUE);
 417     m_PageSetupData -> SetMarginTopLeft(wxPoint(25, 25));
 418     m_PageSetupData -> SetMarginBottomRight(wxPoint(25, 25));
 419 }
 420
 421
 422
 423 wxHtmlEasyPrinting::~wxHtmlEasyPrinting()
 424 {
 425     delete m_PrintData;
 426     delete m_PageSetupData;
 427 }
 428
 429
 430
 431 void wxHtmlEasyPrinting::PreviewFile(const wxString &htmlfile)
 432 {
 433     wxHtmlPrintout *p1 = CreatePrintout();
 434     p1 -> SetHtmlFile(htmlfile);
 435     wxHtmlPrintout *p2 = CreatePrintout();
 436     p2 -> SetHtmlFile(htmlfile);
 437     DoPreview(p1, p2);
 438 }
 439
 440
 441
 442 void wxHtmlEasyPrinting::PreviewText(const wxString &htmltext, const wxString &basepath)
 443 {
 444     wxHtmlPrintout *p1 = CreatePrintout();
 445     p1 -> SetHtmlText(htmltext, basepath, TRUE);
 446     wxHtmlPrintout *p2 = CreatePrintout();
 447     p2 -> SetHtmlText(htmltext, basepath, TRUE);
 448     DoPreview(p1, p2);
 449 }
 450
 451
 452
 453 void wxHtmlEasyPrinting::PrintFile(const wxString &htmlfile)
 454 {
 455     wxHtmlPrintout *p = CreatePrintout();
 456     p -> SetHtmlFile(htmlfile);
 457     DoPrint(p);
 458 }
 459
 460
 461
 462 void wxHtmlEasyPrinting::PrintText(const wxString &htmltext, const wxString &basepath)
 463 {
 464     wxHtmlPrintout *p = CreatePrintout();
 465     p -> SetHtmlText(htmltext, basepath, TRUE);
 466     DoPrint(p);
 467 }
 468
 469
 470
 471 void wxHtmlEasyPrinting::DoPreview(wxHtmlPrintout *printout1, wxHtmlPrintout *printout2)
 472 {
 473     // Pass two printout objects: for preview, and possible printing.
 474     wxPrintDialogData printDialogData(*m_PrintData);
 475     wxPrintPreview *preview = new wxPrintPreview(printout1, printout2, &printDialogData);
 476     if (!preview -> Ok()) {
 477         delete preview;
 478         wxMessageBox(_("There was a problem previewing.\nPerhaps your current printer is not set correctly?"), _("Previewing"), wxOK);
 479     }
 480
 481     else {
 482         wxPreviewFrame *frame = new wxPreviewFrame(preview, m_Frame,
 483                                                    m_Name + _(" Preview"),
 484                                                    wxPoint(100, 100), wxSize(650, 500));
 485         frame -> Centre(wxBOTH);
 486         frame -> Initialize();
 487         frame -> Show(TRUE);
 488     }
 489 }
 490
 491
 492
 493 void wxHtmlEasyPrinting::DoPrint(wxHtmlPrintout *printout)
 494 {
 495     wxPrintDialogData printDialogData(*m_PrintData);
 496     wxPrinter printer(&printDialogData);
 497
 498     if (!printer.Print(m_Frame, printout, TRUE))
 499         wxMessageBox(_("There was a problem printing.\nPerhaps your current printer is not set correctly?"), _("Printing"), wxOK);
 500     else
 501         (*m_PrintData) = printer.GetPrintDialogData().GetPrintData();
 502 }
 503
 504
 505
 506 void wxHtmlEasyPrinting::PrinterSetup()
 507 {
 508     wxPrintDialogData printDialogData(*m_PrintData);
 509     wxPrintDialog printerDialog(m_Frame, &printDialogData);
 510
 511     printerDialog.GetPrintDialogData().SetSetupDialog(TRUE);
 512
 513     if (printerDialog.ShowModal() == wxID_OK)
 514         (*m_PrintData) = printerDialog.GetPrintDialogData().GetPrintData();
 515 }
 516
 517
 518
 519 void wxHtmlEasyPrinting::PageSetup()
 520 {
 521     m_PageSetupData -> SetPrintData(*m_PrintData);
 522     wxPageSetupDialog pageSetupDialog(m_Frame, m_PageSetupData);
 523
 524     if (pageSetupDialog.ShowModal() == wxID_OK) {
 525         (*m_PrintData) = pageSetupDialog.GetPageSetupData().GetPrintData();
 526         (*m_PageSetupData) = pageSetupDialog.GetPageSetupData();
 527     }
 528 }
 529
 530
 531
 532 void wxHtmlEasyPrinting::SetHeader(const wxString& header, int pg)
 533 {
 534     if (pg == wxPAGE_ALL || pg == wxPAGE_EVEN)
 535         m_Headers[0] = header;
 536     if (pg == wxPAGE_ALL || pg == wxPAGE_ODD)
 537         m_Headers[1] = header;
 538 }
 539
 540
 541
 542 void wxHtmlEasyPrinting::SetFooter(const wxString& footer, int pg)
 543 {
 544     if (pg == wxPAGE_ALL || pg == wxPAGE_EVEN)
 545         m_Footers[0] = footer;
 546     if (pg == wxPAGE_ALL || pg == wxPAGE_ODD)
 547         m_Footers[1] = footer;
 548 }
 549
 550
 551
 552 wxHtmlPrintout *wxHtmlEasyPrinting::CreatePrintout()
 553 {
 554     wxHtmlPrintout *p = new wxHtmlPrintout(m_Name);
 555
 556     p -> SetHeader(m_Headers[0], wxPAGE_EVEN);
 557     p -> SetHeader(m_Headers[1], wxPAGE_ODD);
 558     p -> SetFooter(m_Footers[0], wxPAGE_EVEN);
 559     p -> SetFooter(m_Footers[1], wxPAGE_ODD);
 560
 561     p -> SetMargins(m_PageSetupData -> GetMarginTopLeft().y,
 562                     m_PageSetupData -> GetMarginBottomRight().y,
 563                     m_PageSetupData -> GetMarginTopLeft().x,
 564                     m_PageSetupData -> GetMarginBottomRight().x);
 565
 566     return p;
 567 }
 568
 569
 570
 571 #endif // wxUSE_HTML & wxUSE_PRINTING_ARCHITECTURE