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| ** |
| ** Copyright (C) 2015 The Qt Company Ltd. |
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| ** |
| ** This file is part of the QtGui module of the Qt Toolkit. |
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| ** $QT_BEGIN_LICENSE:LGPL21$ |
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| ****************************************************************************/ |
| |
| #ifndef QPAINTENGINE_P_H |
| #define QPAINTENGINE_P_H |
| |
| // |
| // W A R N I N G |
| // ------------- |
| // |
| // This file is not part of the Qt API. It exists for the convenience |
| // of other Qt classes. This header file may change from version to |
| // version without notice, or even be removed. |
| // |
| // We mean it. |
| // |
| |
| #include "QtGui/qpainter.h" |
| #include "QtGui/qpaintengine.h" |
| #include "QtGui/qregion.h" |
| #include "private/qobject_p.h" |
| |
| QT_BEGIN_NAMESPACE |
| |
| class QPaintDevice; |
| |
| class Q_GUI_EXPORT QPaintEnginePrivate |
| { |
| Q_DECLARE_PUBLIC(QPaintEngine) |
| public: |
| QPaintEnginePrivate() : pdev(0), q_ptr(0), currentClipDevice(0), hasSystemTransform(0), |
| hasSystemViewport(0) {} |
| virtual ~QPaintEnginePrivate() { } |
| QPaintDevice *pdev; |
| QPaintEngine *q_ptr; |
| QRegion systemClip; |
| QRect systemRect; |
| QRegion systemViewport; |
| QTransform systemTransform; |
| QPaintDevice *currentClipDevice; |
| uint hasSystemTransform : 1; |
| uint hasSystemViewport : 1; |
| |
| inline void transformSystemClip() |
| { |
| if (systemClip.isEmpty()) |
| return; |
| |
| if (hasSystemTransform) { |
| if (systemTransform.type() <= QTransform::TxTranslate) |
| systemClip.translate(qRound(systemTransform.dx()), qRound(systemTransform.dy())); |
| else |
| systemClip = systemTransform.map(systemClip); |
| } |
| |
| // Make sure we're inside the viewport. |
| if (hasSystemViewport) { |
| systemClip &= systemViewport; |
| if (systemClip.isEmpty()) { |
| // We don't want to paint without system clip, so set it to 1 pixel :) |
| systemClip = QRect(systemViewport.boundingRect().topLeft(), QSize(1, 1)); |
| } |
| } |
| } |
| |
| inline void setSystemTransform(const QTransform &xform) |
| { |
| systemTransform = xform; |
| if ((hasSystemTransform = !xform.isIdentity()) || hasSystemViewport) |
| transformSystemClip(); |
| systemStateChanged(); |
| } |
| |
| inline void setSystemViewport(const QRegion ®ion) |
| { |
| systemViewport = region; |
| hasSystemViewport = !systemViewport.isEmpty(); |
| } |
| |
| virtual void systemStateChanged() { } |
| |
| void drawBoxTextItem(const QPointF &p, const QTextItemInt &ti); |
| }; |
| |
| QT_END_NAMESPACE |
| |
| #endif // QPAINTENGINE_P_H |