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| ** |
| ** Copyright (C) 2016 The Qt Company Ltd. |
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| ** This file is part of the QtGui module of the Qt Toolkit. |
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| ** $QT_BEGIN_LICENSE:LGPL$ |
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| ** |
| ** GNU General Public License Usage |
| ** Alternatively, this file may be used under the terms of the GNU |
| ** General Public License version 2.0 or (at your option) the GNU General |
| ** Public license version 3 or any later version approved by the KDE Free |
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| ****************************************************************************/ |
| |
| #include <private/qpaintengine_preview_p.h> |
| #include <private/qpainter_p.h> |
| #include <private/qpaintengine_p.h> |
| #include <private/qpicture_p.h> |
| |
| #include <QtPrintSupport/qprintengine.h> |
| #include <QtGui/qpainter.h> |
| #include <QtGui/qpicture.h> |
| |
| QT_BEGIN_NAMESPACE |
| |
| class QPreviewPaintEnginePrivate : public QPaintEnginePrivate |
| { |
| Q_DECLARE_PUBLIC(QPreviewPaintEngine) |
| public: |
| QPreviewPaintEnginePrivate() : state(QPrinter::Idle) {} |
| ~QPreviewPaintEnginePrivate() {} |
| |
| QList<const QPicture *> pages; |
| QPaintEngine *engine; |
| QPainter *painter; |
| QPrinter::PrinterState state; |
| |
| QPaintEngine *proxy_paint_engine; |
| QPrintEngine *proxy_print_engine; |
| }; |
| |
| |
| QPreviewPaintEngine::QPreviewPaintEngine() |
| : QPaintEngine(*(new QPreviewPaintEnginePrivate), PaintEngineFeatures(AllFeatures & ~ObjectBoundingModeGradients)) |
| { |
| Q_D(QPreviewPaintEngine); |
| d->proxy_print_engine = nullptr; |
| d->proxy_paint_engine = nullptr; |
| } |
| |
| QPreviewPaintEngine::~QPreviewPaintEngine() |
| { |
| Q_D(QPreviewPaintEngine); |
| |
| qDeleteAll(d->pages); |
| } |
| |
| bool QPreviewPaintEngine::begin(QPaintDevice *) |
| { |
| Q_D(QPreviewPaintEngine); |
| |
| qDeleteAll(d->pages); |
| d->pages.clear(); |
| |
| QPicture *page = new QPicture; |
| page->d_func()->in_memory_only = true; |
| d->painter = new QPainter(page); |
| d->engine = d->painter->paintEngine(); |
| *d->painter->d_func()->state = *painter()->d_func()->state; |
| d->pages.append(page); |
| d->state = QPrinter::Active; |
| return true; |
| } |
| |
| bool QPreviewPaintEngine::end() |
| { |
| Q_D(QPreviewPaintEngine); |
| |
| delete d->painter; |
| d->painter = nullptr; |
| d->engine = nullptr; |
| d->state = QPrinter::Idle; |
| return true; |
| } |
| |
| void QPreviewPaintEngine::updateState(const QPaintEngineState &state) |
| { |
| Q_D(QPreviewPaintEngine); |
| d->engine->updateState(state); |
| } |
| |
| void QPreviewPaintEngine::drawPath(const QPainterPath &path) |
| { |
| Q_D(QPreviewPaintEngine); |
| d->engine->drawPath(path); |
| } |
| |
| void QPreviewPaintEngine::drawPolygon(const QPointF *points, int pointCount, PolygonDrawMode mode) |
| { |
| Q_D(QPreviewPaintEngine); |
| d->engine->drawPolygon(points, pointCount, mode); |
| } |
| |
| void QPreviewPaintEngine::drawTextItem(const QPointF &p, const QTextItem &textItem) |
| { |
| Q_D(QPreviewPaintEngine); |
| d->engine->drawTextItem(p, textItem); |
| } |
| |
| void QPreviewPaintEngine::drawPixmap(const QRectF &r, const QPixmap &pm, const QRectF &sr) |
| { |
| Q_D(QPreviewPaintEngine); |
| d->engine->drawPixmap(r, pm, sr); |
| } |
| |
| void QPreviewPaintEngine::drawTiledPixmap(const QRectF &r, const QPixmap &pm, const QPointF &p) |
| { |
| Q_D(QPreviewPaintEngine); |
| d->engine->drawTiledPixmap(r, pm, p); |
| } |
| |
| bool QPreviewPaintEngine::newPage() |
| { |
| Q_D(QPreviewPaintEngine); |
| |
| QPicture *page = new QPicture; |
| page->d_func()->in_memory_only = true; |
| QPainter *tmp_painter = new QPainter(page); |
| QPaintEngine *tmp_engine = tmp_painter->paintEngine(); |
| |
| // copy the painter state from the original painter |
| Q_ASSERT(painter()->d_func()->state && tmp_painter->d_func()->state); |
| *tmp_painter->d_func()->state = *painter()->d_func()->state; |
| |
| // composition modes aren't supported on a QPrinter and yields a |
| // warning, so ignore it for now |
| tmp_engine->setDirty(DirtyFlags(AllDirty & ~DirtyCompositionMode)); |
| tmp_engine->syncState(); |
| |
| delete d->painter; |
| d->painter = tmp_painter; |
| d->pages.append(page); |
| d->engine = tmp_engine; |
| return true; |
| } |
| |
| bool QPreviewPaintEngine::abort() |
| { |
| Q_D(QPreviewPaintEngine); |
| end(); |
| qDeleteAll(d->pages); |
| d->state = QPrinter::Aborted; |
| |
| return true; |
| } |
| |
| QList<const QPicture *> QPreviewPaintEngine::pages() |
| { |
| Q_D(QPreviewPaintEngine); |
| return d->pages; |
| } |
| |
| void QPreviewPaintEngine::setProxyEngines(QPrintEngine *printEngine, QPaintEngine *paintEngine) |
| { |
| Q_D(QPreviewPaintEngine); |
| d->proxy_print_engine = printEngine; |
| d->proxy_paint_engine = paintEngine; |
| } |
| |
| void QPreviewPaintEngine::setProperty(PrintEnginePropertyKey key, const QVariant &value) |
| { |
| Q_D(QPreviewPaintEngine); |
| d->proxy_print_engine->setProperty(key, value); |
| } |
| |
| QVariant QPreviewPaintEngine::property(PrintEnginePropertyKey key) const |
| { |
| Q_D(const QPreviewPaintEngine); |
| return d->proxy_print_engine->property(key); |
| } |
| |
| int QPreviewPaintEngine::metric(QPaintDevice::PaintDeviceMetric id) const |
| { |
| Q_D(const QPreviewPaintEngine); |
| return d->proxy_print_engine->metric(id); |
| } |
| |
| QPrinter::PrinterState QPreviewPaintEngine::printerState() const |
| { |
| Q_D(const QPreviewPaintEngine); |
| return d->state; |
| } |
| |
| QT_END_NAMESPACE |