src/msw/printwin.cpp

   1 /////////////////////////////////////////////////////////////////////////////
   2 // Name:        printwin.cpp
   3 // Purpose:     wxWindowsPrinter framework
   4 // Author:      Julian Smart
   5 // Modified by:
   6 // Created:     04/01/98
   7 // RCS-ID:      $Id$
   8 // Copyright:   (c) Julian Smart and Markus Holzem
   9 // Licence:     wxWindows license
  10 /////////////////////////////////////////////////////////////////////////////
  11
  12 // ===========================================================================
  13 // declarations
  14 // ===========================================================================
  15
  16 // ---------------------------------------------------------------------------
  17 // headers
  18 // ---------------------------------------------------------------------------
  19
  20 #ifdef __GNUG__
  21     #pragma implementation "printwin.h"
  22 #endif
  23
  24 // For compilers that support precompilation, includes "wx.h".
  25 #include "wx/wxprec.h"
  26
  27 #ifdef __BORLANDC__
  28     #pragma hdrstop
  29 #endif
  30
  31 #include "wx/defs.h"
  32
  33 #ifndef WX_PRECOMP
  34     #include "wx/window.h"
  35     #include "wx/msw/private.h"
  36     #include "wx/utils.h"
  37     #include "wx/dc.h"
  38     #include "wx/app.h"
  39     #include "wx/msgdlg.h"
  40     #include "wx/intl.h"
  41 #endif
  42
  43 #include "wx/msw/printwin.h"
  44 #include "wx/dcprint.h"
  45 #include "wx/printdlg.h"
  46 #include "wx/log.h"
  47 #include "wx/msw/private.h"
  48
  49 #include <stdlib.h>
  50
  51 #include "wx/msw/private.h"
  52
  53 #include <commdlg.h>
  54
  55 #ifndef __WIN32__
  56     #include <print.h>
  57 #endif
  58
  59 // ---------------------------------------------------------------------------
  60 // private functions
  61 // ---------------------------------------------------------------------------
  62
  63 LONG APIENTRY _EXPORT wxAbortProc(HDC hPr, int Code);
  64
  65 // ---------------------------------------------------------------------------
  66 // wxWin macros
  67 // ---------------------------------------------------------------------------
  68
  69 #if !USE_SHARED_LIBRARY
  70     IMPLEMENT_DYNAMIC_CLASS(wxWindowsPrinter, wxPrinterBase)
  71     IMPLEMENT_CLASS(wxWindowsPrintPreview, wxPrintPreviewBase)
  72 #endif
  73
  74 // ===========================================================================
  75 // implementation
  76 // ===========================================================================
  77
  78 // ---------------------------------------------------------------------------
  79 // Printer
  80 // ---------------------------------------------------------------------------
  81
  82 wxWindowsPrinter::wxWindowsPrinter(wxPrintDialogData *data)
  83                 : wxPrinterBase(data)
  84 {
  85     m_lpAbortProc = (WXFARPROC) MakeProcInstance((FARPROC) wxAbortProc, wxGetInstance());
  86 }
  87
  88 wxWindowsPrinter::~wxWindowsPrinter()
  89 {
  90     FreeProcInstance((FARPROC) m_lpAbortProc);
  91 }
  92
  93 bool wxWindowsPrinter::Print(wxWindow *parent, wxPrintout *printout, bool prompt)
  94 {
  95     sm_abortIt = FALSE;
  96     sm_abortWindow = NULL;
  97
  98     if (!printout)
  99         return FALSE;
 100
 101     printout->SetIsPreview(FALSE);
 102
 103     // 4/9/99, JACS: this is a silly place to allow preparation, considering
 104     // the DC and no parameters have been set in the printout object.
 105     // Moved further down.
 106     // printout->OnPreparePrinting();
 107
 108     // Get some parameters from the printout, if defined
 109     int fromPage, toPage;
 110     int minPage, maxPage;
 111     printout->GetPageInfo(&minPage, &maxPage, &fromPage, &toPage);
 112
 113     if (maxPage == 0)
 114         return FALSE;
 115
 116     m_printDialogData.SetMinPage(minPage);
 117     m_printDialogData.SetMaxPage(maxPage);
 118     if (fromPage != 0)
 119         m_printDialogData.SetFromPage(fromPage);
 120     if (toPage != 0)
 121         m_printDialogData.SetToPage(toPage);
 122
 123     if (minPage != 0)
 124     {
 125         m_printDialogData.EnablePageNumbers(TRUE);
 126         if (m_printDialogData.GetFromPage() < m_printDialogData.GetMinPage())
 127             m_printDialogData.SetFromPage(m_printDialogData.GetMinPage());
 128         else if (m_printDialogData.GetFromPage() > m_printDialogData.GetMaxPage())
 129             m_printDialogData.SetFromPage(m_printDialogData.GetMaxPage());
 130         if (m_printDialogData.GetToPage() > m_printDialogData.GetMaxPage())
 131             m_printDialogData.SetToPage(m_printDialogData.GetMaxPage());
 132         else if (m_printDialogData.GetToPage() < m_printDialogData.GetMinPage())
 133             m_printDialogData.SetToPage(m_printDialogData.GetMinPage());
 134     }
 135     else
 136         m_printDialogData.EnablePageNumbers(FALSE);
 137
 138     // Create a suitable device context
 139     wxDC *dc = NULL;
 140     if (prompt)
 141     {
 142         dc = PrintDialog(parent);
 143         if (!dc)
 144             return FALSE;
 145     }
 146     else
 147     {
 148         //      dc = new wxPrinterDC("", "", "", FALSE, m_printData.GetOrientation());
 149         dc = new wxPrinterDC(m_printDialogData.GetPrintData());
 150     }
 151
 152     // May have pressed cancel.
 153     if (!dc || !dc->Ok())
 154     {
 155         if (dc) delete dc;
 156         return FALSE;
 157     }
 158
 159     int logPPIScreenX = 0;
 160     int logPPIScreenY = 0;
 161     int logPPIPrinterX = 0;
 162     int logPPIPrinterY = 0;
 163
 164     HDC hdc = ::GetDC(NULL);
 165     logPPIScreenX = ::GetDeviceCaps(hdc, LOGPIXELSX);
 166     logPPIScreenY = ::GetDeviceCaps(hdc, LOGPIXELSY);
 167     ::ReleaseDC(NULL, hdc);
 168
 169     logPPIPrinterX = ::GetDeviceCaps((HDC) dc->GetHDC(), LOGPIXELSX);
 170     logPPIPrinterY = ::GetDeviceCaps((HDC) dc->GetHDC(), LOGPIXELSY);
 171     if (logPPIPrinterX == 0 || logPPIPrinterY == 0)
 172     {
 173         delete dc;
 174         return FALSE;
 175     }
 176
 177     printout->SetPPIScreen(logPPIScreenX, logPPIScreenY);
 178     printout->SetPPIPrinter(logPPIPrinterX, logPPIPrinterY);
 179
 180     // Set printout parameters
 181     printout->SetDC(dc);
 182
 183     int w, h;
 184     dc->GetSize(&w, &h);
 185     printout->SetPageSizePixels((int)w, (int)h);
 186
 187     dc->GetSizeMM(&w, &h);
 188     printout->SetPageSizeMM((int)w, (int)h);
 189
 190     // Create an abort window
 191     wxBeginBusyCursor();
 192
 193     printout->OnPreparePrinting();
 194
 195     wxWindow *win = CreateAbortWindow(parent, printout);
 196     wxYield();
 197
 198 #if defined(__BORLANDC__) || defined(__GNUWIN32__) || defined(__SALFORDC__) || !defined(__WIN32__)
 199 #ifdef STRICT
 200     ::SetAbortProc((HDC) dc->GetHDC(), (ABORTPROC) m_lpAbortProc);
 201 #else
 202     ::SetAbortProc((HDC) dc->GetHDC(), (FARPROC) m_lpAbortProc);
 203 #endif
 204 #else
 205     ::SetAbortProc((HDC) dc->GetHDC(), (int (_stdcall *)
 206         // cast it to right type only if required
 207         // FIXME it's really cdecl and we're casting it to stdcall - either there is
 208         //       something I don't understand or it will crash at first usage
 209 #ifdef STRICT
 210         (HDC, int)
 211 #else
 212         ()
 213 #endif
 214         )m_lpAbortProc);
 215 #endif
 216
 217     if (!win)
 218     {
 219         wxEndBusyCursor();
 220         wxLogDebug(wxT("Could not create an abort dialog."));
 221
 222         delete dc;
 223     }
 224     sm_abortWindow = win;
 225     sm_abortWindow->Show(TRUE);
 226     wxSafeYield();
 227
 228     printout->OnBeginPrinting();
 229
 230     bool keepGoing = TRUE;
 231
 232     int copyCount;
 233     for (copyCount = 1; copyCount <= m_printDialogData.GetNoCopies(); copyCount ++)
 234     {
 235         if (!printout->OnBeginDocument(m_printDialogData.GetFromPage(), m_printDialogData.GetToPage()))
 236         {
 237             wxEndBusyCursor();
 238             wxLogError(_("Could not start printing."));
 239             break;
 240         }
 241         if (sm_abortIt)
 242             break;
 243
 244         int pn;
 245         for (pn = m_printDialogData.GetFromPage(); keepGoing && (pn <= m_printDialogData.GetToPage()) && printout->HasPage(pn);
 246         pn++)
 247         {
 248             if (sm_abortIt)
 249             {
 250                 keepGoing = FALSE;
 251                 break;
 252             }
 253             else
 254             {
 255                 dc->StartPage();
 256                 printout->OnPrintPage(pn);
 257                 dc->EndPage();
 258             }
 259         }
 260         printout->OnEndDocument();
 261     }
 262
 263     printout->OnEndPrinting();
 264
 265     if (sm_abortWindow)
 266     {
 267         sm_abortWindow->Show(FALSE);
 268         delete sm_abortWindow;
 269         sm_abortWindow = NULL;
 270     }
 271
 272     wxEndBusyCursor();
 273
 274     delete dc;
 275
 276     return TRUE;
 277 }
 278
 279 wxDC* wxWindowsPrinter::PrintDialog(wxWindow *parent)
 280 {
 281     wxDC* dc = (wxDC*) NULL;
 282
 283     wxPrintDialog dialog(parent, & m_printDialogData);
 284     int ret = dialog.ShowModal();
 285
 286     if (ret == wxID_OK)
 287     {
 288         dc = dialog.GetPrintDC();
 289         m_printDialogData = dialog.GetPrintDialogData();
 290     }
 291
 292     return dc;
 293 }
 294
 295 bool wxWindowsPrinter::Setup(wxWindow *parent)
 296 {
 297     wxPrintDialog dialog(parent, & m_printDialogData);
 298     dialog.GetPrintDialogData().SetSetupDialog(TRUE);
 299
 300     int ret = dialog.ShowModal();
 301
 302     if (ret == wxID_OK)
 303     {
 304         m_printDialogData = dialog.GetPrintDialogData();
 305     }
 306
 307     return (ret == wxID_OK);
 308 }
 309
 310 /*
 311 * Print preview
 312 */
 313
 314 wxWindowsPrintPreview::wxWindowsPrintPreview(wxPrintout *printout,
 315                                              wxPrintout *printoutForPrinting,
 316                                              wxPrintDialogData *data)
 317                      : wxPrintPreviewBase(printout, printoutForPrinting, data)
 318 {
 319     DetermineScaling();
 320 }
 321
 322 wxWindowsPrintPreview::wxWindowsPrintPreview(wxPrintout *printout,
 323                                              wxPrintout *printoutForPrinting,
 324                                              wxPrintData *data)
 325                      : wxPrintPreviewBase(printout, printoutForPrinting, data)
 326 {
 327     DetermineScaling();
 328 }
 329
 330 wxWindowsPrintPreview::~wxWindowsPrintPreview()
 331 {
 332 }
 333
 334 bool wxWindowsPrintPreview::Print(bool interactive)
 335 {
 336     if (!m_printPrintout)
 337         return FALSE;
 338     wxWindowsPrinter printer(&m_printDialogData);
 339     return printer.Print(m_previewFrame, m_printPrintout, interactive);
 340 }
 341
 342 void wxWindowsPrintPreview::DetermineScaling()
 343 {
 344     HDC dc = ::GetDC(NULL);
 345     int screenWidth = ::GetDeviceCaps(dc, HORZSIZE);
 346     //    int screenHeight = ::GetDeviceCaps(dc, VERTSIZE);
 347     int screenXRes = ::GetDeviceCaps(dc, HORZRES);
 348     //    int screenYRes = ::GetDeviceCaps(dc, VERTRES);
 349     int logPPIScreenX = ::GetDeviceCaps(dc, LOGPIXELSX);
 350     int logPPIScreenY = ::GetDeviceCaps(dc, LOGPIXELSY);
 351     m_previewPrintout->SetPPIScreen(logPPIScreenX, logPPIScreenY);
 352
 353     ::ReleaseDC(NULL, dc);
 354
 355     // Get a device context for the currently selected printer
 356     wxPrinterDC printerDC(m_printDialogData.GetPrintData());
 357
 358     int printerWidth = 150;
 359     int printerHeight = 250;
 360     int printerXRes = 1500;
 361     int printerYRes = 2500;
 362
 363     if (printerDC.GetHDC())
 364     {
 365         printerWidth = ::GetDeviceCaps((HDC) printerDC.GetHDC(), HORZSIZE);
 366         printerHeight = ::GetDeviceCaps((HDC) printerDC.GetHDC(), VERTSIZE);
 367         printerXRes = ::GetDeviceCaps((HDC) printerDC.GetHDC(), HORZRES);
 368         printerYRes = ::GetDeviceCaps((HDC) printerDC.GetHDC(), VERTRES);
 369
 370         int logPPIPrinterX = ::GetDeviceCaps((HDC) printerDC.GetHDC(), LOGPIXELSX);
 371         int logPPIPrinterY = ::GetDeviceCaps((HDC) printerDC.GetHDC(), LOGPIXELSY);
 372
 373         m_previewPrintout->SetPPIPrinter(logPPIPrinterX, logPPIPrinterY);
 374         m_previewPrintout->SetPageSizeMM(printerWidth, printerHeight);
 375
 376         if (logPPIPrinterX == 0 || logPPIPrinterY == 0 || printerWidth == 0 || printerHeight == 0)
 377             m_isOk = FALSE;
 378     }
 379     else
 380         m_isOk = FALSE;
 381
 382     m_pageWidth = printerXRes;
 383     m_pageHeight = printerYRes;
 384
 385     // At 100%, the page should look about page-size on the screen.
 386     m_previewScale = (float)((float)screenWidth/(float)printerWidth);
 387     m_previewScale = m_previewScale * (float)((float)screenXRes/(float)printerYRes);
 388 }
 389
 390 /****************************************************************************
 391
 392   FUNCTION: wxAbortProc()
 393
 394     PURPOSE:  Processes messages for the Abort Dialog box
 395
 396 ****************************************************************************/
 397
 398 LONG APIENTRY _EXPORT wxAbortProc(HDC WXUNUSED(hPr), int WXUNUSED(Code))
 399 {
 400     MSG msg;
 401
 402     if (!wxPrinterBase::sm_abortWindow)              /* If the abort dialog isn't up yet */
 403         return(TRUE);
 404
 405     /* Process messages intended for the abort dialog box */
 406
 407     while (!wxPrinterBase::sm_abortIt && PeekMessage(&msg, 0, 0, 0, TRUE))
 408         if (!IsDialogMessage((HWND) wxPrinterBase::sm_abortWindow->GetHWND(), &msg)) {
 409             TranslateMessage(&msg);
 410             DispatchMessage(&msg);
 411         }
 412
 413         /* bAbort is TRUE (return is FALSE) if the user has aborted */
 414
 415         return (!wxPrinterBase::sm_abortIt);
 416 }
 417