source: trunk/src/gui/dialogs/qprintpreviewdialog.cpp@ 221

Last change on this file since 221 was 2, checked in by Dmitry A. Kuminov, 16 years ago

Initially imported qt-all-opensource-src-4.5.1 from Trolltech.
File size: 26.7 KB
Line 
1/****************************************************************************
2**
3** Copyright (C) 2009 Nokia Corporation and/or its subsidiary(-ies).
4** Contact: Qt Software Information (qt-info@nokia.com)
5**
6** This file is part of the QtGui module of the Qt Toolkit.
7**
8** $QT_BEGIN_LICENSE:LGPL$
9** Commercial Usage
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11** accordance with the Qt Commercial License Agreement provided with the
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13** a written agreement between you and Nokia.
14**
15** GNU Lesser General Public License Usage
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19** packaging of this file. Please review the following information to
20** ensure the GNU Lesser General Public License version 2.1 requirements
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28** GNU General Public License Usage
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40****************************************************************************/
41
42#include "qprintpreviewdialog.h"
43#include "qprintpreviewwidget.h"
44#include <private/qprinter_p.h>
45
46#include <QtGui/qaction.h>
47#include <QtGui/qboxlayout.h>
48#include <QtGui/qcombobox.h>
49#include <QtGui/qlabel.h>
50#include <QtGui/qlineedit.h>
51#include <QtGui/qpagesetupdialog.h>
52#include <QtGui/qprinter.h>
53#include <QtGui/qstyle.h>
54#include <QtGui/qtoolbutton.h>
55#include <QtGui/qvalidator.h>
56#include <QtGui/qfiledialog.h>
57#include <QtCore/QCoreApplication>
58
59#include <math.h>
60
61#ifndef QT_NO_PRINTPREVIEWDIALOG
62
63QT_BEGIN_NAMESPACE
64
65namespace {
66class ZoomFactorValidator : public QDoubleValidator
67{
68public:
69 ZoomFactorValidator(QObject* parent)
70 : QDoubleValidator(parent) {}
71 ZoomFactorValidator(qreal bottom, qreal top, int decimals, QObject *parent)
72 : QDoubleValidator(bottom, top, decimals, parent) {}
73
74 State validate(QString &input, int &pos) const
75 {
76 bool replacePercent = false;
77 if (input.endsWith(QLatin1Char('%'))) {
78 input = input.left(input.length() - 1);
79 replacePercent = true;
80 }
81 State state = QDoubleValidator::validate(input, pos);
82 if (replacePercent)
83 input += QLatin1Char('%');
84 const int num_size = 4;
85 if (state == Intermediate) {
86 int i = input.indexOf(QLocale::system().decimalPoint());
87 if ((i == -1 && input.size() > num_size)
88 || (i != -1 && i > num_size))
89 return Invalid;
90 }
91 return state;
92 }
93};
94
95class LineEdit : public QLineEdit
96{
97 Q_OBJECT
98public:
99 LineEdit(QWidget* parent = 0)
100 : QLineEdit(parent)
101 {
102 setContextMenuPolicy(Qt::NoContextMenu);
103 connect(this, SIGNAL(returnPressed()), SLOT(handleReturnPressed()));
104 }
105
106protected:
107 void focusInEvent(QFocusEvent *e)
108 {
109 origText = text();
110 QLineEdit::focusInEvent(e);
111 }
112
113 void focusOutEvent(QFocusEvent *e)
114 {
115 if (isModified() && !hasAcceptableInput())
116 setText(origText);
117 QLineEdit::focusOutEvent(e);
118 }
119
120private slots:
121 void handleReturnPressed()
122 {
123 origText = text();
124 }
125
126private:
127 QString origText;
128};
129} // anonymous namespace
130
131class QPrintPreviewDialogPrivate
132{
133 Q_DECLARE_PUBLIC(QPrintPreviewDialog)
134public:
135 QPrintPreviewDialogPrivate(QPrintPreviewDialog *q)
136 : q_ptr(q), printDialog(0), ownPrinter(false),
137 initialized(false) {}
138
139 // private slots
140 void _q_fit(QAction *action);
141 void _q_zoomIn();
142 void _q_zoomOut();
143 void _q_navigate(QAction *action);
144 void _q_setMode(QAction *action);
145 void _q_pageNumEdited();
146 void _q_print();
147 void _q_pageSetup();
148 void _q_previewChanged();
149 void _q_zoomFactorChanged();
150
151 void init(QPrinter *printer = 0);
152 void populateScene();
153 void layoutPages();
154 void setupActions();
155 void updateNavActions();
156 void setFitting(bool on);
157 bool isFitting();
158 void updatePageNumLabel();
159 void updateZoomFactor();
160
161 QPrintPreviewDialog *q_ptr;
162 QPrintDialog *printDialog;
163 QPrintPreviewWidget *preview;
164 QPrinter *printer;
165 bool ownPrinter;
166 bool initialized;
167
168 // widgets:
169 QLineEdit *pageNumEdit;
170 QLabel *pageNumLabel;
171 QComboBox *zoomFactor;
172
173 // actions:
174 QActionGroup* navGroup;
175 QAction *nextPageAction;
176 QAction *prevPageAction;
177 QAction *firstPageAction;
178 QAction *lastPageAction;
179
180 QActionGroup* fitGroup;
181 QAction *fitWidthAction;
182 QAction *fitPageAction;
183
184 QActionGroup* zoomGroup;
185 QAction *zoomInAction;
186 QAction *zoomOutAction;
187
188 QActionGroup* orientationGroup;
189 QAction *portraitAction;
190 QAction *landscapeAction;
191
192 QActionGroup* modeGroup;
193 QAction *singleModeAction;
194 QAction *facingModeAction;
195 QAction *overviewModeAction;
196
197 QActionGroup *printerGroup;
198 QAction *printAction;
199 QAction *pageSetupAction;
200 QAction *closeAction;
201
202 QPointer<QObject> receiverToDisconnectOnClose;
203 QByteArray memberToDisconnectOnClose;
204};
205
206void QPrintPreviewDialogPrivate::init(QPrinter *_printer)
207{
208 Q_Q(QPrintPreviewDialog);
209
210 if (_printer) {
211 preview = new QPrintPreviewWidget(_printer, q);
212 printer = _printer;
213 } else {
214 ownPrinter = true;
215 printer = new QPrinter;
216 preview = new QPrintPreviewWidget(printer, q);
217 }
218 QObject::connect(preview, SIGNAL(paintRequested(QPrinter *)), q, SIGNAL(paintRequested(QPrinter *)));
219 QObject::connect(preview, SIGNAL(previewChanged()), q, SLOT(_q_previewChanged()));
220 setupActions();
221
222 // Navigation
223 QToolButton* nextPageButton = new QToolButton;
224 nextPageButton->setDefaultAction(nextPageAction);
225 QToolButton* prevPageButton = new QToolButton;
226 prevPageButton->setDefaultAction(prevPageAction);
227 QToolButton* firstPageButton = new QToolButton;
228 firstPageButton->setDefaultAction(firstPageAction);
229 QToolButton* lastPageButton = new QToolButton;
230 lastPageButton->setDefaultAction(lastPageAction);
231
232 pageNumEdit = new LineEdit;
233 pageNumEdit->setAlignment(Qt::AlignRight);
234 pageNumEdit->setSizePolicy(QSizePolicy(QSizePolicy::Fixed, QSizePolicy::MinimumExpanding));
235 pageNumLabel = new QLabel;
236 QObject::connect(pageNumEdit, SIGNAL(editingFinished()), q, SLOT(_q_pageNumEdited()));
237
238 QToolButton* fitWidthButton = new QToolButton;
239 fitWidthButton->setDefaultAction(fitWidthAction);
240 QToolButton* fitPageButton = new QToolButton;
241 fitPageButton->setDefaultAction(fitPageAction);
242
243 zoomFactor = new QComboBox;
244 zoomFactor->setEditable(true);
245 zoomFactor->setMinimumContentsLength(7);
246 zoomFactor->setInsertPolicy(QComboBox::NoInsert);
247 LineEdit *zoomEditor = new LineEdit;
248 zoomEditor->setValidator(new ZoomFactorValidator(1, 1000, 1, zoomEditor));
249 zoomFactor->setLineEdit(zoomEditor);
250 static const short factorsX2[] = { 25, 50, 100, 200, 250, 300, 400, 800, 1600 };
251 for (int i = 0; i < int(sizeof(factorsX2) / sizeof(factorsX2[0])); ++i)
252 zoomFactor->addItem(QPrintPreviewDialog::tr("%1%").arg(factorsX2[i] / 2.0));
253 QObject::connect(zoomFactor->lineEdit(), SIGNAL(editingFinished()),
254 q, SLOT(_q_zoomFactorChanged()));
255 QObject::connect(zoomFactor, SIGNAL(currentIndexChanged(int)),
256 q, SLOT(_q_zoomFactorChanged()));
257
258 QToolButton* zoomInButton = new QToolButton;
259 zoomInButton->setDefaultAction(zoomInAction);
260 zoomInButton->setAutoRepeat(true);
261 zoomInButton->setAutoRepeatInterval(200);
262 zoomInButton->setAutoRepeatDelay(200);
263
264 QToolButton* zoomOutButton = new QToolButton;
265 zoomOutButton->setDefaultAction(zoomOutAction);
266 zoomOutButton->setAutoRepeat(true);
267 zoomOutButton->setAutoRepeatInterval(200);
268 zoomOutButton->setAutoRepeatDelay(200);
269
270 //Cannot use the actions' triggered signal here, since it doesnt autorepeat
271 QObject::connect(zoomInButton, SIGNAL(clicked()), q, SLOT(_q_zoomIn()));
272 QObject::connect(zoomOutButton, SIGNAL(clicked()), q, SLOT(_q_zoomOut()));
273
274 QToolButton* portraitButton = new QToolButton;
275 portraitButton->setDefaultAction(portraitAction);
276 QToolButton* landscapeButton = new QToolButton;
277 landscapeButton->setDefaultAction(landscapeAction);
278
279 QToolButton* singleModeButton = new QToolButton;
280 singleModeButton->setDefaultAction(singleModeAction);
281 QToolButton* facingModeButton = new QToolButton;
282 facingModeButton->setDefaultAction(facingModeAction);
283 QToolButton* overviewModeButton = new QToolButton;
284 overviewModeButton->setDefaultAction(overviewModeAction);
285
286 QToolButton *printButton = new QToolButton;
287 printButton->setDefaultAction(printAction);
288 QToolButton *pageSetupButton = new QToolButton;
289 pageSetupButton->setDefaultAction(pageSetupAction);
290 QToolButton *closeButton = new QToolButton;
291 closeButton->setDefaultAction(closeAction);
292
293 QHBoxLayout* modeLayout = new QHBoxLayout;
294 modeLayout->setSpacing(0);
295 modeLayout->addWidget(singleModeButton);
296 modeLayout->addWidget(facingModeButton);
297 modeLayout->addWidget(overviewModeButton);
298
299 QHBoxLayout *barLayout = new QHBoxLayout;
300 barLayout->addWidget(fitWidthButton);
301 barLayout->addWidget(fitPageButton);
302 barLayout->addWidget(zoomFactor);
303 barLayout->addWidget(zoomOutButton);
304 barLayout->addWidget(zoomInButton);
305 barLayout->addWidget(portraitButton);
306 barLayout->addWidget(landscapeButton);
307 barLayout->addStretch();
308 barLayout->addWidget(firstPageButton);
309 barLayout->addWidget(prevPageButton);
310 barLayout->addWidget(pageNumEdit);
311 barLayout->addWidget(pageNumLabel);
312 barLayout->addWidget(nextPageButton);
313 barLayout->addWidget(lastPageButton);
314 barLayout->addStretch();
315 barLayout->addLayout(modeLayout);
316 barLayout->addStretch();
317 barLayout->addWidget(pageSetupButton);
318 barLayout->addWidget(printButton);
319 barLayout->addWidget(closeButton);
320
321 QWidget* buttonBar = new QWidget;
322 buttonBar->setSizePolicy(QSizePolicy(QSizePolicy::Expanding, QSizePolicy::Maximum));
323 barLayout->setMargin(0);
324 buttonBar->setLayout(barLayout);
325
326 QVBoxLayout *topLayout = new QVBoxLayout;
327 topLayout->addWidget(buttonBar);
328 topLayout->addWidget(preview);
329 q->setLayout(topLayout);
330
331 QString caption = QCoreApplication::translate("QPrintPreviewDialog", "Print Preview");
332 if (!printer->docName().isEmpty())
333 caption += QString::fromLatin1(": ") + printer->docName();
334 q->setWindowTitle(caption);
335
336 if (!printer->isValid()
337#if defined(Q_WS_WIN) || defined(Q_WS_MAC)
338 || printer->outputFormat() != QPrinter::NativeFormat
339#endif
340 )
341 pageSetupButton->setEnabled(false);
342}
343
344static inline void qt_setupActionIcon(QAction *action, const QLatin1String &name)
345{
346 QLatin1String imagePrefix(":/trolltech/dialogs/qprintpreviewdialog/images/");
347 QIcon icon;
348 icon.addFile(imagePrefix + name + QLatin1String("-24.png"), QSize(24, 24));
349 icon.addFile(imagePrefix + name + QLatin1String("-32.png"), QSize(32, 32));
350 action->setIcon(icon);
351}
352
353void QPrintPreviewDialogPrivate::setupActions()
354{
355 Q_Q(QPrintPreviewDialog);
356
357 // Navigation
358 navGroup = new QActionGroup(q);
359 navGroup->setExclusive(false);
360 nextPageAction = navGroup->addAction(QCoreApplication::translate("QPrintPreviewDialog", "Next page"));
361 prevPageAction = navGroup->addAction(QCoreApplication::translate("QPrintPreviewDialog", "Previous page"));
362 firstPageAction = navGroup->addAction(QCoreApplication::translate("QPrintPreviewDialog", "First page"));
363 lastPageAction = navGroup->addAction(QCoreApplication::translate("QPrintPreviewDialog", "Last page"));
364 qt_setupActionIcon(nextPageAction, QLatin1String("go-next"));
365 qt_setupActionIcon(prevPageAction, QLatin1String("go-previous"));
366 qt_setupActionIcon(firstPageAction, QLatin1String("go-first"));
367 qt_setupActionIcon(lastPageAction, QLatin1String("go-last"));
368 QObject::connect(navGroup, SIGNAL(triggered(QAction*)), q, SLOT(_q_navigate(QAction*)));
369
370
371 fitGroup = new QActionGroup(q);
372 fitWidthAction = fitGroup->addAction(QCoreApplication::translate("QPrintPreviewDialog", "Fit width"));
373 fitPageAction = fitGroup->addAction(QCoreApplication::translate("QPrintPreviewDialog", "Fit page"));
374 fitWidthAction->setObjectName(QLatin1String("fitWidthAction"));
375 fitPageAction->setObjectName(QLatin1String("fitPageAction"));
376 fitWidthAction->setCheckable(true);
377 fitPageAction->setCheckable(true);
378 qt_setupActionIcon(fitWidthAction, QLatin1String("fit-width"));
379 qt_setupActionIcon(fitPageAction, QLatin1String("fit-page"));
380 QObject::connect(fitGroup, SIGNAL(triggered(QAction*)), q, SLOT(_q_fit(QAction*)));
381
382 // Zoom
383 zoomGroup = new QActionGroup(q);
384 zoomInAction = zoomGroup->addAction(QCoreApplication::translate("QPrintPreviewDialog", "Zoom in"));
385 zoomOutAction = zoomGroup->addAction(QCoreApplication::translate("QPrintPreviewDialog", "Zoom out"));
386 qt_setupActionIcon(zoomInAction, QLatin1String("zoom-in"));
387 qt_setupActionIcon(zoomOutAction, QLatin1String("zoom-out"));
388
389 // Portrait/Landscape
390 orientationGroup = new QActionGroup(q);
391 portraitAction = orientationGroup->addAction(QCoreApplication::translate("QPrintPreviewDialog", "Portrait"));
392 landscapeAction = orientationGroup->addAction(QCoreApplication::translate("QPrintPreviewDialog", "Landscape"));
393 portraitAction->setCheckable(true);
394 landscapeAction->setCheckable(true);
395 qt_setupActionIcon(portraitAction, QLatin1String("layout-portrait"));
396 qt_setupActionIcon(landscapeAction, QLatin1String("layout-landscape"));
397 QObject::connect(portraitAction, SIGNAL(triggered(bool)), preview, SLOT(setPortraitOrientation()));
398 QObject::connect(landscapeAction, SIGNAL(triggered(bool)), preview, SLOT(setLandscapeOrientation()));
399
400 // Display mode
401 modeGroup = new QActionGroup(q);
402 singleModeAction = modeGroup->addAction(QCoreApplication::translate("QPrintPreviewDialog", "Show single page"));
403 facingModeAction = modeGroup->addAction(QCoreApplication::translate("QPrintPreviewDialog", "Show facing pages"));
404 overviewModeAction = modeGroup->addAction(QCoreApplication::translate("QPrintPreviewDialog", "Show overview of all pages"));
405 qt_setupActionIcon(singleModeAction, QLatin1String("view-page-one"));
406 qt_setupActionIcon(facingModeAction, QLatin1String("view-page-sided"));
407 qt_setupActionIcon(overviewModeAction, QLatin1String("view-page-multi"));
408 singleModeAction->setObjectName(QLatin1String("singleModeAction"));
409 facingModeAction->setObjectName(QLatin1String("facingModeAction"));
410 overviewModeAction->setObjectName(QLatin1String("overviewModeAction"));
411
412 singleModeAction->setCheckable(true);
413 facingModeAction->setCheckable(true);
414 overviewModeAction->setCheckable(true);
415 QObject::connect(modeGroup, SIGNAL(triggered(QAction*)), q, SLOT(_q_setMode(QAction*)));
416
417 // Print
418 printerGroup = new QActionGroup(q);
419 printAction = printerGroup->addAction(QCoreApplication::translate("QPrintPreviewDialog", "Print"));
420 pageSetupAction = printerGroup->addAction(QCoreApplication::translate("QPrintPreviewDialog", "Page setup"));
421 closeAction = printerGroup->addAction(QCoreApplication::translate("QPrintPreviewDialog", "Close"));
422 qt_setupActionIcon(printAction, QLatin1String("print"));
423 qt_setupActionIcon(pageSetupAction, QLatin1String("page-setup"));
424 QObject::connect(printAction, SIGNAL(triggered(bool)), q, SLOT(_q_print()));
425 QObject::connect(pageSetupAction, SIGNAL(triggered(bool)), q, SLOT(_q_pageSetup()));
426 QObject::connect(closeAction, SIGNAL(triggered(bool)), q, SLOT(reject()));
427
428 // Initial state:
429 fitPageAction->setChecked(true);
430 singleModeAction->setChecked(true);
431 if (preview->orientation() == QPrinter::Portrait)
432 portraitAction->setChecked(true);
433 else
434 landscapeAction->setChecked(true);
435}
436
437
438bool QPrintPreviewDialogPrivate::isFitting()
439{
440 return (fitGroup->isExclusive()
441 && (fitWidthAction->isChecked() || fitPageAction->isChecked()));
442}
443
444
445void QPrintPreviewDialogPrivate::setFitting(bool on)
446{
447 if (isFitting() == on)
448 return;
449 fitGroup->setExclusive(on);
450 if (on) {
451 QAction* action = fitWidthAction->isChecked() ? fitWidthAction : fitPageAction;
452 action->setChecked(true);
453 if (fitGroup->checkedAction() != action) {
454 // work around exclusitivity problem
455 fitGroup->removeAction(action);
456 fitGroup->addAction(action);
457 }
458 } else {
459 fitWidthAction->setChecked(false);
460 fitPageAction->setChecked(false);
461 }
462}
463
464void QPrintPreviewDialogPrivate::updateNavActions()
465{
466 int curPage = preview->currentPage();
467 int numPages = preview->numPages();
468 nextPageAction->setEnabled(curPage < numPages);
469 prevPageAction->setEnabled(curPage > 1);
470 firstPageAction->setEnabled(curPage > 1);
471 lastPageAction->setEnabled(curPage < numPages);
472 pageNumEdit->setText(QString::number(curPage));
473}
474
475void QPrintPreviewDialogPrivate::updatePageNumLabel()
476{
477 Q_Q(QPrintPreviewDialog);
478
479 int numPages = preview->numPages();
480 int maxChars = QString::number(numPages).length();
481 pageNumLabel->setText(QString(QLatin1String("/ %1")).arg(numPages));
482 int cyphersWidth = q->fontMetrics().width(QString().fill(QLatin1Char('8'), maxChars));
483 int maxWidth = pageNumEdit->minimumSizeHint().width() + cyphersWidth;
484 pageNumEdit->setMinimumWidth(maxWidth);
485 pageNumEdit->setMaximumWidth(maxWidth);
486 pageNumEdit->setValidator(new QIntValidator(1, numPages, pageNumEdit));
487 // any old one will be deleted later along with its parent pageNumEdit
488}
489
490void QPrintPreviewDialogPrivate::updateZoomFactor()
491{
492 zoomFactor->lineEdit()->setText(QString().sprintf("%.1f%%", preview->zoomFactor()*100));
493}
494
495void QPrintPreviewDialogPrivate::_q_fit(QAction* action)
496{
497 setFitting(true);
498 if (action == fitPageAction)
499 preview->fitInView();
500 else
501 preview->fitToWidth();
502}
503
504void QPrintPreviewDialogPrivate::_q_zoomIn()
505{
506 setFitting(false);
507 preview->zoomIn();
508 updateZoomFactor();
509}
510
511void QPrintPreviewDialogPrivate::_q_zoomOut()
512{
513 setFitting(false);
514 preview->zoomOut();
515 updateZoomFactor();
516}
517
518void QPrintPreviewDialogPrivate::_q_pageNumEdited()
519{
520 bool ok = false;
521 int res = pageNumEdit->text().toInt(&ok);
522 if (ok)
523 preview->setCurrentPage(res);
524}
525
526void QPrintPreviewDialogPrivate::_q_navigate(QAction* action)
527{
528 int curPage = preview->currentPage();
529 if (action == prevPageAction)
530 preview->setCurrentPage(curPage - 1);
531 else if (action == nextPageAction)
532 preview->setCurrentPage(curPage + 1);
533 else if (action == firstPageAction)
534 preview->setCurrentPage(1);
535 else if (action == lastPageAction)
536 preview->setCurrentPage(preview->numPages());
537 updateNavActions();
538}
539
540void QPrintPreviewDialogPrivate::_q_setMode(QAction* action)
541{
542 if (action == overviewModeAction) {
543 preview->setViewMode(QPrintPreviewWidget::AllPagesView);
544 setFitting(false);
545 fitGroup->setEnabled(false);
546 navGroup->setEnabled(false);
547 pageNumEdit->setEnabled(false);
548 pageNumLabel->setEnabled(false);
549 } else if (action == facingModeAction) {
550 preview->setViewMode(QPrintPreviewWidget::FacingPagesView);
551 } else {
552 preview->setViewMode(QPrintPreviewWidget::SinglePageView);
553 }
554 if (action == facingModeAction || action == singleModeAction) {
555 fitGroup->setEnabled(true);
556 navGroup->setEnabled(true);
557 pageNumEdit->setEnabled(true);
558 pageNumLabel->setEnabled(true);
559 setFitting(true);
560 }
561}
562
563void QPrintPreviewDialogPrivate::_q_print()
564{
565 Q_Q(QPrintPreviewDialog);
566
567#if defined(Q_WS_WIN) || defined(Q_WS_MAC)
568 if (printer->outputFormat() != QPrinter::NativeFormat) {
569 QString title;
570 QString suffix;
571 if (printer->outputFormat() == QPrinter::PdfFormat) {
572 title = QCoreApplication::translate("QPrintPreviewDialog", "Export to PDF");
573 suffix = QLatin1String(".pdf");
574 } else {
575 title = QCoreApplication::translate("QPrintPreviewDialog", "Export to PostScript");
576 suffix = QLatin1String(".ps");
577 }
578 QString fileName = QFileDialog::getSaveFileName(q, title, printer->outputFileName(),
579 QLatin1String("*") + suffix);
580 if (!fileName.isEmpty()) {
581 if (QFileInfo(fileName).suffix().isEmpty())
582 fileName.append(suffix);
583 printer->setOutputFileName(fileName);
584 }
585 if (!printer->outputFileName().isEmpty())
586 preview->print();
587 q->accept();
588 return;
589 }
590#endif
591
592 if (!printDialog)
593 printDialog = new QPrintDialog(printer, q);
594 if (printDialog->exec() == QDialog::Accepted) {
595 preview->print();
596 q->accept();
597 }
598}
599
600void QPrintPreviewDialogPrivate::_q_pageSetup()
601{
602 Q_Q(QPrintPreviewDialog);
603
604 QPageSetupDialog pageSetup(printer, q);
605 if (pageSetup.exec() == QDialog::Accepted) {
606 // update possible orientation changes
607 if (preview->orientation() == QPrinter::Portrait) {
608 portraitAction->setChecked(true);
609 preview->setPortraitOrientation();
610 }else {
611 landscapeAction->setChecked(true);
612 preview->setLandscapeOrientation();
613 }
614 }
615}
616
617void QPrintPreviewDialogPrivate::_q_previewChanged()
618{
619 updateNavActions();
620 updatePageNumLabel();
621 updateZoomFactor();
622}
623
624void QPrintPreviewDialogPrivate::_q_zoomFactorChanged()
625{
626 QString text = zoomFactor->lineEdit()->text();
627 bool ok;
628 qreal factor = text.remove(QLatin1Char('%')).toFloat(&ok);
629 factor = qMax(qreal(1.0), qMin(qreal(1000.0), factor));
630 if (ok) {
631 preview->setZoomFactor(factor/100.0);
632 zoomFactor->setEditText(QString(QLatin1String("%1%")).arg(factor));
633 setFitting(false);
634 }
635}
636
637///////////////////////////////////////////////////////////////////////////
638
639/*!
640 \class QPrintPreviewDialog
641 \since 4.4
642
643 \brief The QPrintPreviewDialog class provides a dialog for
644 previewing and configuring page layouts for printer output.
645
646 Using QPrintPreviewDialog in your existing application is
647 straightforward:
648
649 \list 1
650 \o Create the QPrintPreviewDialog.
651
652 You can construct a QPrintPreviewDialog with an existing QPrinter
653 object, or you can have QPrintPreviewDialog create one for you,
654 which will be the system default printer.
655
656 \o Connect the paintRequested() signal to a slot.
657
658 When the dialog needs to generate a set of preview pages, the
659 paintRequested() signal will be emitted. You can use the exact
660 same code for the actual printing as for having the preview
661 generated, including calling QPrinter::newPage() to start a new
662 page in the preview. Connect a slot to the paintRequested()
663 signal, where you draw onto the QPrinter object that is passed
664 into the slot.
665
666 \o Call exec().
667
668 Call QPrintPreviewDialog::exec() to show the preview dialog.
669 \endlist
670
671
672 \sa QPrinter, QPrintDialog, QPageSetupDialog, QPrintPreviewWidget
673*/
674
675/*!
676 Constructs a QPrintPreviewDialog based on \a printer and with \a
677 parent as the parent widget. The widget flags \a flags are passed on
678 to the QWidget constructor.
679
680 \sa QWidget::setWindowFlags()
681*/
682QPrintPreviewDialog::QPrintPreviewDialog(QPrinter* printer, QWidget *parent, Qt::WindowFlags flags)
683 : QDialog(parent, flags), d_ptr(new QPrintPreviewDialogPrivate(this))
684{
685 Q_D(QPrintPreviewDialog);
686 d->init(printer);
687}
688
689/*!
690 \overload
691 \fn QPrintPreviewDialog::QPrintPreviewDialog(QWidget *parent, Qt::WindowFlags flags)
692
693 This will create an internal QPrinter object, which will use the
694 system default printer.
695*/
696QPrintPreviewDialog::QPrintPreviewDialog(QWidget *parent, Qt::WindowFlags f)
697 : QDialog(parent, f), d_ptr(new QPrintPreviewDialogPrivate(this))
698{
699 Q_D(QPrintPreviewDialog);
700 d->init();
701}
702
703/*!
704 Destroys the QPrintPreviewDialog.
705*/
706QPrintPreviewDialog::~QPrintPreviewDialog()
707{
708 Q_D(QPrintPreviewDialog);
709 if (d->ownPrinter)
710 delete d->printer;
711 delete d->printDialog;
712 delete d_ptr;
713}
714
715/*!
716 \reimp
717*/
718void QPrintPreviewDialog::setVisible(bool visible)
719{
720 Q_D(QPrintPreviewDialog);
721 // this will make the dialog get a decent default size
722 if (visible && !d->initialized) {
723 d->preview->updatePreview();
724 d->initialized = true;
725 }
726 QDialog::setVisible(visible);
727}
728
729/*!
730 \reimp
731*/
732void QPrintPreviewDialog::done(int result)
733{
734 Q_D(QPrintPreviewDialog);
735 QDialog::done(result);
736 if (d->receiverToDisconnectOnClose) {
737 disconnect(this, SIGNAL(finished(int)),
738 d->receiverToDisconnectOnClose, d->memberToDisconnectOnClose);
739 d->receiverToDisconnectOnClose = 0;
740 }
741 d->memberToDisconnectOnClose.clear();
742}
743
744/*!
745 \overload
746 \since 4.5
747
748 Opens the dialog and connects its finished(int) signal to the slot specified
749 by \a receiver and \a member.
750
751 The signal will be disconnected from the slot when the dialog is closed.
752*/
753void QPrintPreviewDialog::open(QObject *receiver, const char *member)
754{
755 Q_D(QPrintPreviewDialog);
756 // the int parameter isn't very useful here; we could just as well connect
757 // to reject(), but this feels less robust somehow
758 connect(this, SIGNAL(finished(int)), receiver, member);
759 d->receiverToDisconnectOnClose = receiver;
760 d->memberToDisconnectOnClose = member;
761 QDialog::open();
762}
763
764/*!
765 Returns a pointer to the QPrinter object this dialog is currently
766 operating on.
767*/
768QPrinter *QPrintPreviewDialog::printer()
769{
770 Q_D(QPrintPreviewDialog);
771 return d->printer;
772}
773
774/*!
775 \fn void QPrintPreviewDialog::paintRequested(QPrinter *printer)
776
777 This signal is emitted when the QPrintPreviewDialog needs to generate
778 a set of preview pages.
779
780 The \a printer instance supplied is the paint device onto which you should
781 paint the contents of each page, using the QPrinter instance in the same way
782 as you would when printing directly.
783*/
784
785
786QT_END_NAMESPACE
787
788#include "moc_qprintpreviewdialog.cpp"
789#include "qprintpreviewdialog.moc"
790
791#endif // QT_NO_PRINTPREVIEWDIALOG
792
793
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