qprintpreviewwidget.cpp

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1/****************************************************************************-
2**-
3** Copyright (C) 2015 The Qt Company Ltd.-
4** Contact: http://www.qt.io/licensing/-
5**-
6** This file is part of the QtGui module of the Qt Toolkit.-
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29**-
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31**-
32****************************************************************************/-
33-
34#include "qprintpreviewwidget.h"-
35#include "private/qwidget_p.h"-
36#include <private/qprinter_p.h>-
37-
38#include <QtCore/qmath.h>-
39#include <QtWidgets/qboxlayout.h>-
40#include <QtWidgets/qgraphicsitem.h>-
41#include <QtWidgets/qgraphicsview.h>-
42#include <QtWidgets/qscrollbar.h>-
43#include <QtWidgets/qstyleoption.h>-
44-
45#ifndef QT_NO_PRINTPREVIEWWIDGET-
46-
47QT_BEGIN_NAMESPACE-
48-
49namespace {-
50class PageItem : public QGraphicsItem-
51{-
52public:-
53 PageItem(int _pageNum, const QPicture* _pagePicture, QSize _paperSize, QRect _pageRect)-
54 : pageNum(_pageNum), pagePicture(_pagePicture),-
55 paperSize(_paperSize), pageRect(_pageRect)-
56 {-
57 qreal border = qMax(paperSize.height(), paperSize.width()) / 25;-
58 brect = QRectF(QPointF(-border, -border),-
59 QSizeF(paperSize)+QSizeF(2*border, 2*border));-
60 setCacheMode(DeviceCoordinateCache);-
61 }
executed 4 times by 1 test: end of block
Executed by:
  • tst_QPrinter
4
62-
63 QRectF boundingRect() const Q_DECL_OVERRIDE-
64 { return brect; }
executed 113 times by 1 test: return brect;
Executed by:
  • tst_QPrinter
113
65-
66 inline int pageNumber() const-
67 { return pageNum; }
executed 17 times by 1 test: return pageNum;
Executed by:
  • tst_QPrinter
17
68-
69 void paint(QPainter *painter, const QStyleOptionGraphicsItem *item, QWidget *widget) Q_DECL_OVERRIDE;-
70-
71private:-
72 int pageNum;-
73 const QPicture* pagePicture;-
74 QSize paperSize;-
75 QRect pageRect;-
76 QRectF brect;-
77};-
78-
79void PageItem::paint(QPainter *painter, const QStyleOptionGraphicsItem *option, QWidget *widget)-
80{-
81 Q_UNUSED(widget);-
82-
83#if 0-
84 // Draw item bounding rect, for debugging-
85 painter->save();-
86 painter->setPen(QPen(Qt::red, 0));-
87 painter->setBrush(Qt::NoBrush);-
88 painter->drawRect(QRectF(-border()+1.0, -border()+1.0, boundingRect().width()-2, boundingRect().height()-2));-
89 painter->restore();-
90#endif-
91-
92 QRectF paperRect(0,0, paperSize.width(), paperSize.height());-
93-
94 // Draw shadow-
95 painter->setClipRect(option->exposedRect);-
96 qreal shWidth = paperRect.width()/100;-
97 QRectF rshadow(paperRect.topRight() + QPointF(0, shWidth),-
98 paperRect.bottomRight() + QPointF(shWidth, 0));-
99 QLinearGradient rgrad(rshadow.topLeft(), rshadow.topRight());-
100 rgrad.setColorAt(0.0, QColor(0,0,0,255));-
101 rgrad.setColorAt(1.0, QColor(0,0,0,0));-
102 painter->fillRect(rshadow, QBrush(rgrad));-
103 QRectF bshadow(paperRect.bottomLeft() + QPointF(shWidth, 0),-
104 paperRect.bottomRight() + QPointF(0, shWidth));-
105 QLinearGradient bgrad(bshadow.topLeft(), bshadow.bottomLeft());-
106 bgrad.setColorAt(0.0, QColor(0,0,0,255));-
107 bgrad.setColorAt(1.0, QColor(0,0,0,0));-
108 painter->fillRect(bshadow, QBrush(bgrad));-
109 QRectF cshadow(paperRect.bottomRight(),-
110 paperRect.bottomRight() + QPointF(shWidth, shWidth));-
111 QRadialGradient cgrad(cshadow.topLeft(), shWidth, cshadow.topLeft());-
112 cgrad.setColorAt(0.0, QColor(0,0,0,255));-
113 cgrad.setColorAt(1.0, QColor(0,0,0,0));-
114 painter->fillRect(cshadow, QBrush(cgrad));-
115-
116 painter->setClipRect(paperRect & option->exposedRect);-
117 painter->fillRect(paperRect, Qt::white);-
118 if (!pagePicture)
!pagePictureDescription
TRUEnever evaluated
FALSEevaluated 2 times by 1 test
Evaluated by:
  • tst_QPrinter
0-2
119 return;
never executed: return;
0
120 painter->drawPicture(pageRect.topLeft(), *pagePicture);-
121-
122 // Effect: make anything drawn in the margins look washed out.-
123 QPainterPath path;-
124 path.addRect(paperRect);-
125 path.addRect(pageRect);-
126 painter->setPen(QPen(Qt::NoPen));-
127 painter->setBrush(QColor(255, 255, 255, 180));-
128 painter->drawPath(path);-
129-
130#if 0-
131 // Draw frame around paper.-
132 painter->setPen(QPen(Qt::black, 0));-
133 painter->setBrush(Qt::NoBrush);-
134 painter->drawRect(paperRect);-
135#endif-
136-
137 // todo: drawtext "Page N" below paper-
138}
executed 2 times by 1 test: end of block
Executed by:
  • tst_QPrinter
2
139-
140class GraphicsView : public QGraphicsView-
141{-
142 Q_OBJECT-
143public:-
144 GraphicsView(QWidget* parent = 0)-
145 : QGraphicsView(parent)-
146 {-
147#ifdef Q_OS_MAC-
148 setFrameStyle(QFrame::NoFrame);-
149#endif-
150 }
executed 1 time by 1 test: end of block
Executed by:
  • tst_QPrinter
1
151signals:-
152 void resized();-
153-
154protected:-
155 void resizeEvent(QResizeEvent* e) Q_DECL_OVERRIDE-
156 {-
157 {-
158 const QSignalBlocker blocker(verticalScrollBar()); // Don't change page, QTBUG-14517-
159 QGraphicsView::resizeEvent(e);-
160 }-
161 emit resized();-
162 }
executed 2 times by 1 test: end of block
Executed by:
  • tst_QPrinter
2
163-
164 void showEvent(QShowEvent* e) Q_DECL_OVERRIDE-
165 {-
166 QGraphicsView::showEvent(e);-
167 emit resized();-
168 }
executed 1 time by 1 test: end of block
Executed by:
  • tst_QPrinter
1
169};-
170-
171} // anonymous namespace-
172-
173class QPrintPreviewWidgetPrivate : public QWidgetPrivate-
174{-
175 Q_DECLARE_PUBLIC(QPrintPreviewWidget)-
176public:-
177 QPrintPreviewWidgetPrivate()-
178 : scene(0), curPage(1),-
179 viewMode(QPrintPreviewWidget::SinglePageView),-
180 zoomMode(QPrintPreviewWidget::FitInView),-
181 zoomFactor(1), initialized(false), fitting(true)-
182 {}
executed 1 time by 1 test: end of block
Executed by:
  • tst_QPrinter
1
183-
184 // private slots-
185 void _q_fit(bool doFitting = false);-
186 void _q_updateCurrentPage();-
187-
188 void init();-
189 void populateScene();-
190 void layoutPages();-
191 void generatePreview();-
192 void setCurrentPage(int pageNumber);-
193 void zoom(qreal zoom);-
194 void setZoomFactor(qreal zoomFactor);-
195 int calcCurrentPage();-
196-
197 GraphicsView *graphicsView;-
198 QGraphicsScene *scene;-
199-
200 int curPage;-
201 QList<const QPicture *> pictures;-
202 QList<QGraphicsItem *> pages;-
203-
204 QPrintPreviewWidget::ViewMode viewMode;-
205 QPrintPreviewWidget::ZoomMode zoomMode;-
206 qreal zoomFactor;-
207 bool ownPrinter;-
208 QPrinter* printer;-
209 bool initialized;-
210 bool fitting;-
211};-
212-
213void QPrintPreviewWidgetPrivate::_q_fit(bool doFitting)-
214{-
215 Q_Q(QPrintPreviewWidget);-
216-
217 if (curPage < 1 || curPage > pages.count())
curPage < 1Description
TRUEnever evaluated
FALSEevaluated 4 times by 1 test
Evaluated by:
  • tst_QPrinter
curPage > pages.count()Description
TRUEnever evaluated
FALSEevaluated 4 times by 1 test
Evaluated by:
  • tst_QPrinter
0-4
218 return;
never executed: return;
0
219-
220 if (!doFitting && !fitting)
!doFittingDescription
TRUEevaluated 4 times by 1 test
Evaluated by:
  • tst_QPrinter
FALSEnever evaluated
!fittingDescription
TRUEnever evaluated
FALSEevaluated 4 times by 1 test
Evaluated by:
  • tst_QPrinter
0-4
221 return;
never executed: return;
0
222-
223 if (doFitting && fitting) {
doFittingDescription
TRUEnever evaluated
FALSEevaluated 4 times by 1 test
Evaluated by:
  • tst_QPrinter
fittingDescription
TRUEnever evaluated
FALSEnever evaluated
0-4
224 QRect viewRect = graphicsView->viewport()->rect();-
225 if (zoomMode == QPrintPreviewWidget::FitInView) {
zoomMode == QP...get::FitInViewDescription
TRUEnever evaluated
FALSEnever evaluated
0
226 QList<QGraphicsItem*> containedItems = graphicsView->items(viewRect, Qt::ContainsItemBoundingRect);-
227 foreach(QGraphicsItem* item, containedItems) {-
228 PageItem* pg = static_cast<PageItem*>(item);-
229 if (pg->pageNumber() == curPage)
pg->pageNumber() == curPageDescription
TRUEnever evaluated
FALSEnever evaluated
0
230 return;
never executed: return;
0
231 }
never executed: end of block
0
232 }
never executed: end of block
0
233-
234 int newPage = calcCurrentPage();-
235 if (newPage != curPage)
newPage != curPageDescription
TRUEnever evaluated
FALSEnever evaluated
0
236 curPage = newPage;
never executed: curPage = newPage;
0
237 }
never executed: end of block
0
238-
239 QRectF target = pages.at(curPage-1)->sceneBoundingRect();-
240 if (viewMode == QPrintPreviewWidget::FacingPagesView) {
viewMode == QP...acingPagesViewDescription
TRUEnever evaluated
FALSEevaluated 4 times by 1 test
Evaluated by:
  • tst_QPrinter
0-4
241 // fit two pages-
242 if (curPage % 2)
curPage % 2Description
TRUEnever evaluated
FALSEnever evaluated
0
243 target.setLeft(target.left() - target.width());
never executed: target.setLeft(target.left() - target.width());
0
244 else-
245 target.setRight(target.right() + target.width());
never executed: target.setRight(target.right() + target.width());
0
246 } else if (viewMode == QPrintPreviewWidget::AllPagesView) {
viewMode == QP...::AllPagesViewDescription
TRUEnever evaluated
FALSEevaluated 4 times by 1 test
Evaluated by:
  • tst_QPrinter
0-4
247 target = scene->itemsBoundingRect();-
248 }
never executed: end of block
0
249-
250 if (zoomMode == QPrintPreviewWidget::FitToWidth) {
zoomMode == QP...et::FitToWidthDescription
TRUEnever evaluated
FALSEevaluated 4 times by 1 test
Evaluated by:
  • tst_QPrinter
0-4
251 QTransform t;-
252 qreal scale = graphicsView->viewport()->width() / target.width();-
253 t.scale(scale, scale);-
254 graphicsView->setTransform(t);-
255 if (doFitting && fitting) {
doFittingDescription
TRUEnever evaluated
FALSEnever evaluated
fittingDescription
TRUEnever evaluated
FALSEnever evaluated
0
256 QRectF viewSceneRect = graphicsView->viewportTransform().mapRect(graphicsView->viewport()->rect());-
257 viewSceneRect.moveTop(target.top());-
258 graphicsView->ensureVisible(viewSceneRect); // Nah...-
259 }
never executed: end of block
0
260 } else {
never executed: end of block
0
261 graphicsView->fitInView(target, Qt::KeepAspectRatio);-
262 if (zoomMode == QPrintPreviewWidget::FitInView) {
zoomMode == QP...get::FitInViewDescription
TRUEevaluated 4 times by 1 test
Evaluated by:
  • tst_QPrinter
FALSEnever evaluated
0-4
263 int step = qRound(graphicsView->matrix().mapRect(target).height());-
264 graphicsView->verticalScrollBar()->setSingleStep(step);-
265 graphicsView->verticalScrollBar()->setPageStep(step);-
266 }
executed 4 times by 1 test: end of block
Executed by:
  • tst_QPrinter
4
267 }
executed 4 times by 1 test: end of block
Executed by:
  • tst_QPrinter
4
268-
269 zoomFactor = graphicsView->transform().m11() * (float(printer->logicalDpiY()) / q->logicalDpiY());-
270 emit q->previewChanged();-
271}
executed 4 times by 1 test: end of block
Executed by:
  • tst_QPrinter
4
272-
273void QPrintPreviewWidgetPrivate::_q_updateCurrentPage()-
274{-
275 Q_Q(QPrintPreviewWidget);-
276-
277 if (viewMode == QPrintPreviewWidget::AllPagesView)
viewMode == QP...::AllPagesViewDescription
TRUEnever evaluated
FALSEevaluated 11 times by 1 test
Evaluated by:
  • tst_QPrinter
0-11
278 return;
never executed: return;
0
279-
280 int newPage = calcCurrentPage();-
281 if (newPage != curPage) {
newPage != curPageDescription
TRUEevaluated 8 times by 1 test
Evaluated by:
  • tst_QPrinter
FALSEevaluated 3 times by 1 test
Evaluated by:
  • tst_QPrinter
3-8
282 curPage = newPage;-
283 emit q->previewChanged();-
284 }
executed 8 times by 1 test: end of block
Executed by:
  • tst_QPrinter
8
285}
executed 11 times by 1 test: end of block
Executed by:
  • tst_QPrinter
11
286-
287int QPrintPreviewWidgetPrivate::calcCurrentPage()-
288{-
289 int maxArea = 0;-
290 int newPage = curPage;-
291 QRect viewRect = graphicsView->viewport()->rect();-
292 QList<QGraphicsItem*> items = graphicsView->items(viewRect);-
293 for (int i=0; i<items.size(); ++i) {
i<items.size()Description
TRUEevaluated 20 times by 1 test
Evaluated by:
  • tst_QPrinter
FALSEevaluated 11 times by 1 test
Evaluated by:
  • tst_QPrinter
11-20
294 PageItem* pg = static_cast<PageItem*>(items.at(i));-
295 QRect overlap = graphicsView->mapFromScene(pg->sceneBoundingRect()).boundingRect() & viewRect;-
296 int area = overlap.width() * overlap.height();-
297 if (area > maxArea) {
area > maxAreaDescription
TRUEevaluated 17 times by 1 test
Evaluated by:
  • tst_QPrinter
FALSEevaluated 3 times by 1 test
Evaluated by:
  • tst_QPrinter
3-17
298 maxArea = area;-
299 newPage = pg->pageNumber();-
300 } else if (area == maxArea && pg->pageNumber() < newPage) {
executed 17 times by 1 test: end of block
Executed by:
  • tst_QPrinter
area == maxAreaDescription
TRUEnever evaluated
FALSEevaluated 3 times by 1 test
Evaluated by:
  • tst_QPrinter
pg->pageNumber() < newPageDescription
TRUEnever evaluated
FALSEnever evaluated
0-17
301 newPage = pg->pageNumber();-
302 }
never executed: end of block
0
303 }
executed 20 times by 1 test: end of block
Executed by:
  • tst_QPrinter
20
304 return newPage;
executed 11 times by 1 test: return newPage;
Executed by:
  • tst_QPrinter
11
305}-
306-
307void QPrintPreviewWidgetPrivate::init()-
308{-
309 Q_Q(QPrintPreviewWidget);-
310-
311 graphicsView = new GraphicsView;-
312 graphicsView->setInteractive(false);-
313 graphicsView->setDragMode(QGraphicsView::ScrollHandDrag);-
314 graphicsView->setViewportUpdateMode(QGraphicsView::SmartViewportUpdate);-
315 QObject::connect(graphicsView->verticalScrollBar(), SIGNAL(valueChanged(int)),-
316 q, SLOT(_q_updateCurrentPage()));-
317 QObject::connect(graphicsView, SIGNAL(resized()), q, SLOT(_q_fit()));-
318-
319 scene = new QGraphicsScene(graphicsView);-
320 scene->setBackgroundBrush(Qt::gray);-
321 graphicsView->setScene(scene);-
322-
323 QVBoxLayout *layout = new QVBoxLayout;-
324 q->setLayout(layout);-
325 layout->setContentsMargins(0, 0, 0, 0);-
326 layout->addWidget(graphicsView);-
327}
executed 1 time by 1 test: end of block
Executed by:
  • tst_QPrinter
1
328-
329void QPrintPreviewWidgetPrivate::populateScene()-
330{-
331 // remove old pages-
332 for (int i = 0; i < pages.size(); i++)
i < pages.size()Description
TRUEnever evaluated
FALSEevaluated 1 time by 1 test
Evaluated by:
  • tst_QPrinter
0-1
333 scene->removeItem(pages.at(i));
never executed: scene->removeItem(pages.at(i));
0
334 qDeleteAll(pages);-
335 pages.clear();-
336-
337 int numPages = pictures.count();-
338 QSize paperSize = printer->pageLayout().fullRectPixels(printer->resolution()).size();-
339 QRect pageRect = printer->pageLayout().paintRectPixels(printer->resolution());-
340-
341 for (int i = 0; i < numPages; i++) {
i < numPagesDescription
TRUEevaluated 4 times by 1 test
Evaluated by:
  • tst_QPrinter
FALSEevaluated 1 time by 1 test
Evaluated by:
  • tst_QPrinter
1-4
342 PageItem* item = new PageItem(i+1, pictures.at(i), paperSize, pageRect);-
343 scene->addItem(item);-
344 pages.append(item);-
345 }
executed 4 times by 1 test: end of block
Executed by:
  • tst_QPrinter
4
346}
executed 1 time by 1 test: end of block
Executed by:
  • tst_QPrinter
1
347-
348void QPrintPreviewWidgetPrivate::layoutPages()-
349{-
350 int numPages = pages.count();-
351 if (numPages < 1)
numPages < 1Description
TRUEnever evaluated
FALSEevaluated 1 time by 1 test
Evaluated by:
  • tst_QPrinter
0-1
352 return;
never executed: return;
0
353-
354 int numPagePlaces = numPages;-
355 int cols = 1; // singleMode and default-
356 if (viewMode == QPrintPreviewWidget::AllPagesView) {
viewMode == QP...::AllPagesViewDescription
TRUEnever evaluated
FALSEevaluated 1 time by 1 test
Evaluated by:
  • tst_QPrinter
0-1
357 if (printer->orientation() == QPrinter::Portrait)
printer->orien...nter::PortraitDescription
TRUEnever evaluated
FALSEnever evaluated
0
358 cols = qCeil(qSqrt((float) numPages));
never executed: cols = qCeil(qSqrt((float) numPages));
0
359 else-
360 cols = qFloor(qSqrt((float) numPages));
never executed: cols = qFloor(qSqrt((float) numPages));
0
361 cols += cols % 2; // Nicer with an even number of cols-
362 }
never executed: end of block
0
363 else if (viewMode == QPrintPreviewWidget::FacingPagesView) {
viewMode == QP...acingPagesViewDescription
TRUEnever evaluated
FALSEevaluated 1 time by 1 test
Evaluated by:
  • tst_QPrinter
0-1
364 cols = 2;-
365 numPagePlaces += 1;-
366 }
never executed: end of block
0
367 int rows = qCeil(qreal(numPagePlaces) / cols);-
368-
369 qreal itemWidth = pages.at(0)->boundingRect().width();-
370 qreal itemHeight = pages.at(0)->boundingRect().height();-
371 int pageNum = 1;-
372 for (int i = 0; i < rows && pageNum <= numPages; i++) {
i < rowsDescription
TRUEevaluated 4 times by 1 test
Evaluated by:
  • tst_QPrinter
FALSEevaluated 1 time by 1 test
Evaluated by:
  • tst_QPrinter
pageNum <= numPagesDescription
TRUEevaluated 4 times by 1 test
Evaluated by:
  • tst_QPrinter
FALSEnever evaluated
0-4
373 for (int j = 0; j < cols && pageNum <= numPages; j++) {
j < colsDescription
TRUEevaluated 4 times by 1 test
Evaluated by:
  • tst_QPrinter
FALSEevaluated 4 times by 1 test
Evaluated by:
  • tst_QPrinter
pageNum <= numPagesDescription
TRUEevaluated 4 times by 1 test
Evaluated by:
  • tst_QPrinter
FALSEnever evaluated
0-4
374 if (!i && !j && viewMode == QPrintPreviewWidget::FacingPagesView) {
!iDescription
TRUEevaluated 1 time by 1 test
Evaluated by:
  • tst_QPrinter
FALSEevaluated 3 times by 1 test
Evaluated by:
  • tst_QPrinter
!jDescription
TRUEevaluated 1 time by 1 test
Evaluated by:
  • tst_QPrinter
FALSEnever evaluated
viewMode == QP...acingPagesViewDescription
TRUEnever evaluated
FALSEevaluated 1 time by 1 test
Evaluated by:
  • tst_QPrinter
0-3
375 // Front page doesn't have a facing page-
376 continue;
never executed: continue;
0
377 } else {-
378 pages.at(pageNum-1)->setPos(QPointF(j*itemWidth, i*itemHeight));-
379 pageNum++;-
380 }
executed 4 times by 1 test: end of block
Executed by:
  • tst_QPrinter
4
381 }-
382 }
executed 4 times by 1 test: end of block
Executed by:
  • tst_QPrinter
4
383 scene->setSceneRect(scene->itemsBoundingRect());-
384}
executed 1 time by 1 test: end of block
Executed by:
  • tst_QPrinter
1
385-
386void QPrintPreviewWidgetPrivate::generatePreview()-
387{-
388 //### If QPrinter::setPreviewMode() becomes public, handle the-
389 //### case that we have been constructed with a printer that-
390 //### _already_ has been preview-painted to, so we should-
391 //### initially just show the pages it already contains, and not-
392 //### emit paintRequested() until the user changes some parameter-
393-
394 Q_Q(QPrintPreviewWidget);-
395 printer->d_func()->setPreviewMode(true);-
396 emit q->paintRequested(printer);-
397 printer->d_func()->setPreviewMode(false);-
398 pictures = printer->d_func()->previewPages();-
399 populateScene(); // i.e. setPreviewPrintedPictures() e.l.-
400 layoutPages();-
401 curPage = qBound(1, curPage, pages.count());-
402 if (fitting)
fittingDescription
TRUEevaluated 1 time by 1 test
Evaluated by:
  • tst_QPrinter
FALSEnever evaluated
0-1
403 _q_fit();
executed 1 time by 1 test: _q_fit();
Executed by:
  • tst_QPrinter
1
404 emit q->previewChanged();-
405}
executed 1 time by 1 test: end of block
Executed by:
  • tst_QPrinter
1
406-
407void QPrintPreviewWidgetPrivate::setCurrentPage(int pageNumber)-
408{-
409 if (pageNumber < 1 || pageNumber > pages.count())
pageNumber < 1Description
TRUEnever evaluated
FALSEnever evaluated
pageNumber > pages.count()Description
TRUEnever evaluated
FALSEnever evaluated
0
410 return;
never executed: return;
0
411-
412 int lastPage = curPage;-
413 curPage = pageNumber;-
414-
415 if (lastPage != curPage && lastPage > 0 && lastPage <= pages.count()) {
lastPage != curPageDescription
TRUEnever evaluated
FALSEnever evaluated
lastPage > 0Description
TRUEnever evaluated
FALSEnever evaluated
lastPage <= pages.count()Description
TRUEnever evaluated
FALSEnever evaluated
0
416 if (zoomMode != QPrintPreviewWidget::FitInView) {
zoomMode != QP...get::FitInViewDescription
TRUEnever evaluated
FALSEnever evaluated
0
417 QScrollBar *hsc = graphicsView->horizontalScrollBar();-
418 QScrollBar *vsc = graphicsView->verticalScrollBar();-
419 QPointF pt = graphicsView->transform().map(pages.at(curPage-1)->pos());-
420 vsc->setValue(int(pt.y()) - 10);-
421 hsc->setValue(int(pt.x()) - 10);-
422 } else {
never executed: end of block
0
423 graphicsView->centerOn(pages.at(curPage-1));-
424 }
never executed: end of block
0
425 }-
426}
never executed: end of block
0
427-
428void QPrintPreviewWidgetPrivate::zoom(qreal zoom)-
429{-
430 zoomFactor *= zoom;-
431 graphicsView->scale(zoom, zoom);-
432}
never executed: end of block
0
433-
434void QPrintPreviewWidgetPrivate::setZoomFactor(qreal _zoomFactor)-
435{-
436 Q_Q(QPrintPreviewWidget);-
437 zoomFactor = _zoomFactor;-
438 graphicsView->resetTransform();-
439 int dpi_y = q->logicalDpiY();-
440 int printer_dpi_y = printer->logicalDpiY();-
441 graphicsView->scale(zoomFactor*(dpi_y/float(printer_dpi_y)),-
442 zoomFactor*(dpi_y/float(printer_dpi_y)));-
443}
never executed: end of block
0
444-
445///////////////////////////////////////-
446-
447/*!-
448 \class QPrintPreviewWidget-
449 \since 4.4-
450-
451 \brief The QPrintPreviewWidget class provides a widget for-
452 previewing page layouts for printer output.-
453-
454 \ingroup printing-
455 \inmodule QtPrintSupport-
456-
457 QPrintPreviewDialog uses a QPrintPreviewWidget internally, and the-
458 purpose of QPrintPreviewWidget is to make it possible to embed the-
459 preview into other widgets. It also makes it possible to build a different-
460 user interface around it than the default one provided with QPrintPreviewDialog.-
461-
462 Using QPrintPreviewWidget is straightforward:-
463-
464 \list 1-
465 \li Create the QPrintPreviewWidget-
466-
467 Construct the QPrintPreviewWidget either by passing in an-
468 existing QPrinter object, or have QPrintPreviewWidget create a-
469 default constructed QPrinter object for you.-
470-
471 \li Connect the paintRequested() signal to a slot.-
472-
473 When the widget needs to generate a set of preview pages, a-
474 paintRequested() signal will be emitted from the widget. Connect a-
475 slot to this signal, and draw onto the QPrinter passed in as a-
476 signal parameter. Call QPrinter::newPage(), to start a new-
477 page in the preview.-
478-
479 \endlist-
480-
481 \sa QPrinter, QPrintDialog, QPageSetupDialog, QPrintPreviewDialog-
482*/-
483-
484-
485/*!-
486 \enum QPrintPreviewWidget::ViewMode-
487-
488 This enum is used to describe the view mode of the preview widget.-
489-
490 \value SinglePageView A mode where single pages in the preview-
491 is viewed.-
492-
493 \value FacingPagesView A mode where the facing pages in the preview-
494 is viewed.-
495-
496 \value AllPagesView A view mode where all the pages in the preview-
497 is viewed.-
498*/-
499-
500/*!-
501 \enum QPrintPreviewWidget::ZoomMode-
502-
503 This enum is used to describe zoom mode of the preview widget.-
504-
505 \value CustomZoom The zoom is set to a custom zoom value.-
506-
507 \value FitToWidth This mode fits the current page to the width of the view.-
508-
509 \value FitInView This mode fits the current page inside the view.-
510-
511*/-
512-
513/*!-
514 Constructs a QPrintPreviewWidget based on \a printer and with \a-
515 parent as the parent widget. The widget flags \a flags are passed on-
516 to the QWidget constructor.-
517-
518 \sa QWidget::setWindowFlags()-
519*/-
520QPrintPreviewWidget::QPrintPreviewWidget(QPrinter *printer, QWidget *parent, Qt::WindowFlags flags)-
521 : QWidget(*new QPrintPreviewWidgetPrivate, parent, flags)-
522{-
523 Q_D(QPrintPreviewWidget);-
524 d->printer = printer;-
525 d->ownPrinter = false;-
526 d->init();-
527}
executed 1 time by 1 test: end of block
Executed by:
  • tst_QPrinter
1
528-
529/*!-
530 \overload-
531-
532 This will cause QPrintPreviewWidget to create an internal, default-
533 constructed QPrinter object, which will be used to generate the-
534 preview.-
535*/-
536QPrintPreviewWidget::QPrintPreviewWidget(QWidget *parent, Qt::WindowFlags flags)-
537 : QWidget(*new QPrintPreviewWidgetPrivate, parent, flags)-
538{-
539 Q_D(QPrintPreviewWidget);-
540 d->printer = new QPrinter;-
541 d->ownPrinter = true;-
542 d->init();-
543}
never executed: end of block
0
544-
545-
546/*!-
547 Destroys the QPrintPreviewWidget.-
548*/-
549QPrintPreviewWidget::~QPrintPreviewWidget()-
550{-
551 Q_D(QPrintPreviewWidget);-
552 if (d->ownPrinter)
d->ownPrinterDescription
TRUEnever evaluated
FALSEevaluated 1 time by 1 test
Evaluated by:
  • tst_QPrinter
0-1
553 delete d->printer;
never executed: delete d->printer;
0
554}
executed 1 time by 1 test: end of block
Executed by:
  • tst_QPrinter
1
555-
556/*!-
557 Returns the current view mode. The default view mode is SinglePageView.-
558*/-
559QPrintPreviewWidget::ViewMode QPrintPreviewWidget::viewMode() const-
560{-
561 Q_D(const QPrintPreviewWidget);-
562 return d->viewMode;
never executed: return d->viewMode;
0
563}-
564-
565/*!-
566 Sets the view mode to \a mode. The default view mode is-
567 SinglePageView.-
568*/-
569void QPrintPreviewWidget::setViewMode(ViewMode mode)-
570{-
571 Q_D(QPrintPreviewWidget);-
572 d->viewMode = mode;-
573 d->layoutPages();-
574 if (d->viewMode == AllPagesView) {
d->viewMode == AllPagesViewDescription
TRUEnever evaluated
FALSEnever evaluated
0
575 d->graphicsView->fitInView(d->scene->itemsBoundingRect(), Qt::KeepAspectRatio);-
576 d->fitting = false;-
577 d->zoomMode = QPrintPreviewWidget::CustomZoom;-
578 d->zoomFactor = d->graphicsView->transform().m11() * (float(d->printer->logicalDpiY()) / logicalDpiY());-
579 emit previewChanged();-
580 } else {
never executed: end of block
0
581 d->fitting = true;-
582 d->_q_fit();-
583 }
never executed: end of block
0
584}-
585-
586/*!-
587 Returns the current orientation of the preview. This value is-
588 obtained from the QPrinter object associated with the preview.-
589*/-
590QPrinter::Orientation QPrintPreviewWidget::orientation() const-
591{-
592 Q_D(const QPrintPreviewWidget);-
593 return d->printer->orientation();
executed 1 time by 1 test: return d->printer->orientation();
Executed by:
  • tst_QPrinter
1
594}-
595-
596/*!-
597 Sets the current orientation to \a orientation. This value will be-
598 set on the QPrinter object associated with the preview.-
599*/-
600void QPrintPreviewWidget::setOrientation(QPrinter::Orientation orientation)-
601{-
602 Q_D(QPrintPreviewWidget);-
603 d->printer->setOrientation(orientation);-
604 d->generatePreview();-
605}
never executed: end of block
0
606-
607/*!-
608 Prints the preview to the printer associated with the preview.-
609*/-
610void QPrintPreviewWidget::print()-
611{-
612 Q_D(QPrintPreviewWidget);-
613 // ### make use of the generated pages-
614 emit paintRequested(d->printer);-
615}
never executed: end of block
0
616-
617/*!-
618 Zooms the current view in by \a factor. The default value for \a-
619 factor is 1.1, which means the view will be scaled up by 10%.-
620*/-
621void QPrintPreviewWidget::zoomIn(qreal factor)-
622{-
623 Q_D(QPrintPreviewWidget);-
624 d->fitting = false;-
625 d->zoomMode = QPrintPreviewWidget::CustomZoom;-
626 d->zoom(factor);-
627}
never executed: end of block
0
628-
629/*!-
630 Zooms the current view out by \a factor. The default value for \a-
631 factor is 1.1, which means the view will be scaled down by 10%.-
632*/-
633void QPrintPreviewWidget::zoomOut(qreal factor)-
634{-
635 Q_D(QPrintPreviewWidget);-
636 d->fitting = false;-
637 d->zoomMode = QPrintPreviewWidget::CustomZoom;-
638 d->zoom(1/factor);-
639}
never executed: end of block
0
640-
641/*!-
642 Returns the zoom factor of the view.-
643*/-
644qreal QPrintPreviewWidget::zoomFactor() const-
645{-
646 Q_D(const QPrintPreviewWidget);-
647 return d->zoomFactor;
executed 13 times by 1 test: return d->zoomFactor;
Executed by:
  • tst_QPrinter
13
648}-
649-
650/*!-
651 Sets the zoom factor of the view to \a factor. For example, a-
652 value of 1.0 indicates an unscaled view, which is approximately-
653 the size the view will have on paper. A value of 0.5 will halve-
654 the size of the view, while a value of 2.0 will double the size of-
655 the view.-
656*/-
657void QPrintPreviewWidget::setZoomFactor(qreal factor)-
658{-
659 Q_D(QPrintPreviewWidget);-
660 d->fitting = false;-
661 d->zoomMode = QPrintPreviewWidget::CustomZoom;-
662 d->setZoomFactor(factor);-
663}
never executed: end of block
0
664-
665/*!-
666 \since 4.6-
667 Returns the number of pages in the preview.-
668*/-
669int QPrintPreviewWidget::pageCount() const-
670{-
671 Q_D(const QPrintPreviewWidget);-
672 return d->pages.size();
executed 26 times by 1 test: return d->pages.size();
Executed by:
  • tst_QPrinter
26
673}-
674-
675/*!-
676 Returns the currently viewed page in the preview.-
677*/-
678int QPrintPreviewWidget::currentPage() const-
679{-
680 Q_D(const QPrintPreviewWidget);-
681 return d->curPage;
executed 14 times by 1 test: return d->curPage;
Executed by:
  • tst_QPrinter
14
682}-
683-
684/*!-
685 Sets the current page in the preview. This will cause the view to-
686 skip to the beginning of \a page.-
687*/-
688void QPrintPreviewWidget::setCurrentPage(int page)-
689{-
690 Q_D(QPrintPreviewWidget);-
691 d->setCurrentPage(page);-
692}
never executed: end of block
0
693-
694/*!-
695 This is a convenience function and is the same as calling \c-
696 {setZoomMode(QPrintPreviewWidget::FitToWidth)}.-
697*/-
698void QPrintPreviewWidget::fitToWidth()-
699{-
700 setZoomMode(FitToWidth);-
701}
never executed: end of block
0
702-
703/*!-
704 This is a convenience function and is the same as calling \c-
705 {setZoomMode(QPrintPreviewWidget::FitInView)}.-
706*/-
707void QPrintPreviewWidget::fitInView()-
708{-
709 setZoomMode(FitInView);-
710}
never executed: end of block
0
711-
712/*!-
713 Sets the zoom mode to \a zoomMode. The default zoom mode is FitInView.-
714-
715 \sa zoomMode(), viewMode(), setViewMode()-
716*/-
717void QPrintPreviewWidget::setZoomMode(QPrintPreviewWidget::ZoomMode zoomMode)-
718{-
719 Q_D(QPrintPreviewWidget);-
720 d->zoomMode = zoomMode;-
721 if (d->zoomMode == FitInView || d->zoomMode == FitToWidth) {
d->zoomMode == FitInViewDescription
TRUEnever evaluated
FALSEnever evaluated
d->zoomMode == FitToWidthDescription
TRUEnever evaluated
FALSEnever evaluated
0
722 d->fitting = true;-
723 d->_q_fit(true);-
724 } else {
never executed: end of block
0
725 d->fitting = false;-
726 }
never executed: end of block
0
727}-
728-
729/*!-
730 Returns the current zoom mode.-
731-
732 \sa setZoomMode(), viewMode(), setViewMode()-
733*/-
734QPrintPreviewWidget::ZoomMode QPrintPreviewWidget::zoomMode() const-
735{-
736 Q_D(const QPrintPreviewWidget);-
737 return d->zoomMode;
never executed: return d->zoomMode;
0
738}-
739-
740/*!-
741 This is a convenience function and is the same as calling \c-
742 {setOrientation(QPrinter::Landscape)}.-
743*/-
744void QPrintPreviewWidget::setLandscapeOrientation()-
745{-
746 setOrientation(QPrinter::Landscape);-
747}
never executed: end of block
0
748-
749/*!-
750 This is a convenience function and is the same as calling \c-
751 {setOrientation(QPrinter::Portrait)}.-
752*/-
753void QPrintPreviewWidget::setPortraitOrientation()-
754{-
755 setOrientation(QPrinter::Portrait);-
756}
never executed: end of block
0
757-
758/*!-
759 This is a convenience function and is the same as calling \c-
760 {setViewMode(QPrintPreviewWidget::SinglePageView)}.-
761*/-
762void QPrintPreviewWidget::setSinglePageViewMode()-
763{-
764 setViewMode(SinglePageView);-
765}
never executed: end of block
0
766-
767/*!-
768 This is a convenience function and is the same as calling \c-
769 {setViewMode(QPrintPreviewWidget::FacingPagesView)}.-
770*/-
771void QPrintPreviewWidget::setFacingPagesViewMode()-
772{-
773 setViewMode(FacingPagesView);-
774}
never executed: end of block
0
775-
776/*!-
777 This is a convenience function and is the same as calling \c-
778 {setViewMode(QPrintPreviewWidget::AllPagesView)}.-
779*/-
780void QPrintPreviewWidget::setAllPagesViewMode()-
781{-
782 setViewMode(AllPagesView);-
783}
never executed: end of block
0
784-
785-
786/*!-
787 This function updates the preview, which causes the-
788 paintRequested() signal to be emitted.-
789*/-
790void QPrintPreviewWidget::updatePreview()-
791{-
792 Q_D(QPrintPreviewWidget);-
793 d->initialized = true;-
794 d->generatePreview();-
795 d->graphicsView->updateGeometry();-
796}
executed 1 time by 1 test: end of block
Executed by:
  • tst_QPrinter
1
797-
798/*! \reimp-
799*/-
800void QPrintPreviewWidget::setVisible(bool visible)-
801{-
802 Q_D(QPrintPreviewWidget);-
803 if (visible && !d->initialized)
visibleDescription
TRUEevaluated 1 time by 1 test
Evaluated by:
  • tst_QPrinter
FALSEnever evaluated
!d->initializedDescription
TRUEnever evaluated
FALSEevaluated 1 time by 1 test
Evaluated by:
  • tst_QPrinter
0-1
804 updatePreview();
never executed: updatePreview();
0
805 QWidget::setVisible(visible);-
806}
executed 1 time by 1 test: end of block
Executed by:
  • tst_QPrinter
1
807-
808/*!-
809 \fn void QPrintPreviewWidget::paintRequested(QPrinter *printer)-
810-
811 This signal is emitted when the preview widget needs to generate a-
812 set of preview pages. \a printer is the printer associated with-
813 this preview widget.-
814*/-
815-
816/*!-
817 \fn void QPrintPreviewWidget::previewChanged()-
818-
819 This signal is emitted whenever the preview widget has changed-
820 some internal state, such as the orientation.-
821*/-
822-
823-
824QT_END_NAMESPACE-
825-
826#include "moc_qprintpreviewwidget.cpp"-
827#include "qprintpreviewwidget.moc"-
828-
829#endif // QT_NO_PRINTPREVIEWWIDGET-
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