src/printsupport/dialogs/qprintdialog_win.cpp

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  41
  42 #ifndef QT_NO_PRINTDIALOG
  43
  44 #include "qprintdialog.h"
  45
  46 #include <qwidget.h>
  47 #include <qapplication.h>
  48 #include <qmessagebox.h>
  49 #include <private/qapplication_p.h>
  50
  51 #include "qabstractprintdialog_p.h"
  52 #include "../kernel/qprintengine_win_p.h"
  53 #include "../kernel/qprinter_p.h"
  54
  55 #if !defined(PD_NOCURRENTPAGE)
  56 #define PD_NOCURRENTPAGE    0x00800000
  57 #define PD_RESULT_PRINT 1
  58 #define PD_RESULT_APPLY 2
  59 #define START_PAGE_GENERAL  0XFFFFFFFF
  60 #endif
  61
  62 QT_BEGIN_NAMESPACE
  63
  64 //extern void qt_win_eatMouseMove();
  65
  66 class QPrintDialogPrivate : public QAbstractPrintDialogPrivate
  67 {
  68     Q_DECLARE_PUBLIC(QPrintDialog)
  69 public:
  70     QPrintDialogPrivate()
  71         : ep(0)
  72     {
  73     }
  74
  75     int openWindowsPrintDialogModally();
  76
  77     QWin32PrintEnginePrivate *ep;
  78 };
  79
  80 static void qt_win_setup_PRINTDLGEX(PRINTDLGEX *pd, QWidget *parent,
  81                                     QPrintDialog *pdlg,
  82                                     QPrintDialogPrivate *d, HGLOBAL *tempDevNames)
  83 {
  84     DEVMODE *devMode = d->ep->devMode;
  85
  86     if (devMode) {
  87         int size = sizeof(DEVMODE) + devMode->dmDriverExtra;
  88         pd->hDevMode = GlobalAlloc(GHND, size);
  89         {
  90             void *dest = GlobalLock(pd->hDevMode);
  91             memcpy(dest, devMode, size);
  92             GlobalUnlock(pd->hDevMode);
  93         }
  94     } else {
  95         pd->hDevMode = NULL;
  96     }
  97     pd->hDevNames  = tempDevNames;
  98
  99     pd->Flags = PD_RETURNDC;
 100     pd->Flags |= PD_USEDEVMODECOPIESANDCOLLATE;
 101
 102     if (!pdlg->isOptionEnabled(QPrintDialog::PrintSelection))
 103         pd->Flags |= PD_NOSELECTION;
 104     if (pdlg->isOptionEnabled(QPrintDialog::PrintPageRange)) {
 105         pd->nMinPage = pdlg->minPage();
 106         pd->nMaxPage = pdlg->maxPage();
 107     }
 108
 109     if(!pdlg->isOptionEnabled(QPrintDialog::PrintToFile))
 110         pd->Flags |= PD_DISABLEPRINTTOFILE;
 111
 112     if (pdlg->printRange() == QPrintDialog::Selection)
 113         pd->Flags |= PD_SELECTION;
 114     else if (pdlg->printRange() == QPrintDialog::PageRange)
 115         pd->Flags |= PD_PAGENUMS;
 116     else
 117         pd->Flags |= PD_ALLPAGES;
 118
 119     // As stated by MSDN, to enable collate option when minpage==maxpage==0
 120     // set the PD_NOPAGENUMS flag
 121     if (pd->nMinPage==0 && pd->nMaxPage==0)
 122         pd->Flags |= PD_NOPAGENUMS;
 123
 124     // Disable Current Page option if not required as default is Enabled
 125     if (!pdlg->isOptionEnabled(QPrintDialog::PrintCurrentPage))
 126         pd->Flags |= PD_NOCURRENTPAGE;
 127
 128     // Default to showing the General tab first
 129     pd->nStartPage = START_PAGE_GENERAL;
 130
 131     // We don't support more than one page range in the QPrinter API yet.
 132     pd->nPageRanges = 1;
 133     pd->nMaxPageRanges = 1;
 134
 135     if (d->ep->printToFile)
 136         pd->Flags |= PD_PRINTTOFILE;
 137     Q_ASSERT(parent);
 138     QWindow *parentWindow = parent->windowHandle();
 139     pd->hwndOwner = parentWindow ? (HWND)QGuiApplication::platformNativeInterface()->nativeResourceForWindow("handle", parentWindow) : 0;
 140     pd->lpPageRanges[0].nFromPage = qMax(pdlg->fromPage(), pdlg->minPage());
 141     pd->lpPageRanges[0].nToPage   = (pdlg->toPage() > 0) ? qMin(pdlg->toPage(), pdlg->maxPage()) : 1;
 142     pd->nCopies = d->ep->num_copies;
 143 }
 144
 145 static void qt_win_read_back_PRINTDLGEX(PRINTDLGEX *pd, QPrintDialog *pdlg, QPrintDialogPrivate *d)
 146 {
 147     if (pd->Flags & PD_SELECTION) {
 148         pdlg->setPrintRange(QPrintDialog::Selection);
 149         pdlg->setFromTo(0, 0);
 150     } else if (pd->Flags & PD_PAGENUMS) {
 151         pdlg->setPrintRange(QPrintDialog::PageRange);
 152         pdlg->setFromTo(pd->lpPageRanges[0].nFromPage, pd->lpPageRanges[0].nToPage);
 153     } else if (pd->Flags & PD_CURRENTPAGE) {
 154         pdlg->setPrintRange(QPrintDialog::CurrentPage);
 155         pdlg->setFromTo(0, 0);
 156     } else { // PD_ALLPAGES
 157         pdlg->setPrintRange(QPrintDialog::AllPages);
 158         pdlg->setFromTo(0, 0);
 159     }
 160
 161     d->ep->printToFile = (pd->Flags & PD_PRINTTOFILE) != 0;
 162
 163     d->ep->readDevnames(pd->hDevNames);
 164     d->ep->readDevmode(pd->hDevMode);
 165     d->ep->updateCustomPaperSize();
 166
 167     if (d->ep->printToFile && d->ep->fileName.isEmpty())
 168         d->ep->fileName = d->ep->port;
 169     else if (!d->ep->printToFile && d->ep->fileName == QLatin1String("FILE:"))
 170         d->ep->fileName.clear();
 171 }
 172
 173 static bool warnIfNotNative(QPrinter *printer)
 174 {
 175     if (printer->outputFormat() != QPrinter::NativeFormat) {
 176         qWarning("QPrintDialog: Cannot be used on non-native printers");
 177         return false;
 178     }
 179     return true;
 180 }
 181
 182 QPrintDialog::QPrintDialog(QPrinter *printer, QWidget *parent)
 183     : QAbstractPrintDialog( *(new QPrintDialogPrivate), printer, parent)
 184 {
 185     Q_D(QPrintDialog);
 186     if (!warnIfNotNative(d->printer))
 187         return;
 188     d->ep = static_cast<QWin32PrintEngine *>(d->printer->paintEngine())->d_func();
 189     setAttribute(Qt::WA_DontShowOnScreen);
 190 }
 191
 192 QPrintDialog::QPrintDialog(QWidget *parent)
 193     : QAbstractPrintDialog( *(new QPrintDialogPrivate), 0, parent)
 194 {
 195     Q_D(QPrintDialog);
 196     if (!warnIfNotNative(d->printer))
 197         return;
 198     d->ep = static_cast<QWin32PrintEngine *>(d->printer->paintEngine())->d_func();
 199     setAttribute(Qt::WA_DontShowOnScreen);
 200 }
 201
 202 QPrintDialog::~QPrintDialog()
 203 {
 204 }
 205
 206 int QPrintDialog::exec()
 207 {
 208     if (!warnIfNotNative(printer()))
 209         return 0;
 210
 211     Q_D(QPrintDialog);
 212     return d->openWindowsPrintDialogModally();
 213 }
 214
 215 int QPrintDialogPrivate::openWindowsPrintDialogModally()
 216 {
 217     Q_Q(QPrintDialog);
 218     QWidget *parent = q->parentWidget();
 219     if (parent)
 220         parent = parent->window();
 221     else
 222         parent = QApplication::activeWindow();
 223
 224     // If there is no window, fall back to the print dialog itself
 225     if (parent == 0)
 226         parent = q;
 227
 228     q->QDialog::setVisible(true);
 229
 230     HGLOBAL *tempDevNames = ep->createDevNames();
 231
 232     bool done;
 233     bool result;
 234     bool doPrinting;
 235
 236     PRINTPAGERANGE pageRange;
 237     PRINTDLGEX pd;
 238     memset(&pd, 0, sizeof(PRINTDLGEX));
 239     pd.lStructSize = sizeof(PRINTDLGEX);
 240     pd.lpPageRanges = &pageRange;
 241     qt_win_setup_PRINTDLGEX(&pd, parent, q, this, tempDevNames);
 242
 243     do {
 244         done = true;
 245         doPrinting = false;
 246         result = (PrintDlgEx(&pd) == S_OK);
 247         if (result && (pd.dwResultAction == PD_RESULT_PRINT
 248                        || pd.dwResultAction == PD_RESULT_APPLY))
 249         {
 250             doPrinting = (pd.dwResultAction == PD_RESULT_PRINT);
 251             if ((pd.Flags & PD_PAGENUMS)
 252                 && (pd.lpPageRanges[0].nFromPage > pd.lpPageRanges[0].nToPage))
 253             {
 254                 pd.lpPageRanges[0].nFromPage = 1;
 255                 pd.lpPageRanges[0].nToPage = 1;
 256                 done = false;
 257             }
 258             if (pd.hDC == 0)
 259                 result = false;
 260         }
 261
 262         if (!done) {
 263             QMessageBox::warning(0, QPrintDialog::tr("Print"),
 264                                  QPrintDialog::tr("The 'From' value cannot be greater than the 'To' value."),
 265                                  QPrintDialog::tr("OK"));
 266         }
 267     } while (!done);
 268
 269     q->QDialog::setVisible(false);
 270
 271 //    qt_win_eatMouseMove();
 272
 273     // write values back...
 274     if (result && (pd.dwResultAction == PD_RESULT_PRINT
 275                    || pd.dwResultAction == PD_RESULT_APPLY))
 276     {
 277         qt_win_read_back_PRINTDLGEX(&pd, q, this);
 278         // update printer validity
 279         printer->d_func()->validPrinter = !ep->name.isEmpty();
 280     }
 281
 282     // Cleanup...
 283     GlobalFree(tempDevNames);
 284
 285     q->done(result && doPrinting);
 286
 287     return result && doPrinting;
 288 }
 289
 290 void QPrintDialog::setVisible(bool visible)
 291 {
 292     Q_D(QPrintDialog);
 293
 294     // its always modal, so we cannot hide a native print dialog
 295     if (!visible)
 296         return;
 297
 298     if (!warnIfNotNative(d->printer))
 299         return;
 300
 301     (void)d->openWindowsPrintDialogModally();
 302     return;
 303 }
 304
 305 QT_END_NAMESPACE
 306
 307 #include "moc_qprintdialog.cpp"
 308
 309 #endif // QT_NO_PRINTDIALOG