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Diffstat (limited to 'src/gui/painting/qpaintengine_alpha_p.h')
-rw-r--r-- | src/gui/painting/qpaintengine_alpha_p.h | 135 |
1 files changed, 135 insertions, 0 deletions
diff --git a/src/gui/painting/qpaintengine_alpha_p.h b/src/gui/painting/qpaintengine_alpha_p.h new file mode 100644 index 0000000000..2b8b4dda07 --- /dev/null +++ b/src/gui/painting/qpaintengine_alpha_p.h @@ -0,0 +1,135 @@ +/**************************************************************************** +** +** Copyright (C) 2011 Nokia Corporation and/or its subsidiary(-ies). +** All rights reserved. +** Contact: Nokia Corporation (qt-info@nokia.com) +** +** This file is part of the QtGui module of the Qt Toolkit. +** +** $QT_BEGIN_LICENSE:LGPL$ +** No Commercial Usage +** This file contains pre-release code and may not be distributed. +** You may use this file in accordance with the terms and conditions +** contained in the Technology Preview License Agreement accompanying +** this package. +** +** GNU Lesser General Public License Usage +** Alternatively, this file may be used under the terms of the GNU Lesser +** General Public License version 2.1 as published by the Free Software +** Foundation and appearing in the file LICENSE.LGPL included in the +** packaging of this file. Please review the following information to +** ensure the GNU Lesser General Public License version 2.1 requirements +** will be met: http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html. +** +** In addition, as a special exception, Nokia gives you certain additional +** rights. These rights are described in the Nokia Qt LGPL Exception +** version 1.1, included in the file LGPL_EXCEPTION.txt in this package. +** +** If you have questions regarding the use of this file, please contact +** Nokia at qt-info@nokia.com. +** +** +** +** +** +** +** +** +** $QT_END_LICENSE$ +** +****************************************************************************/ + +#ifndef QPAINTENGINE_ALPHA_P_H +#define QPAINTENGINE_ALPHA_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. +// + +#ifndef QT_NO_PRINTER +#include "private/qpaintengine_p.h" + +QT_BEGIN_NAMESPACE + +class QAlphaPaintEnginePrivate; + +class QAlphaPaintEngine : public QPaintEngine +{ + Q_DECLARE_PRIVATE(QAlphaPaintEngine) +public: + ~QAlphaPaintEngine(); + + virtual bool begin(QPaintDevice *pdev); + virtual bool end(); + + virtual void updateState(const QPaintEngineState &state); + + virtual void drawPath(const QPainterPath &path); + + virtual void drawPolygon(const QPointF *points, int pointCount, PolygonDrawMode mode); + + virtual void drawPixmap(const QRectF &r, const QPixmap &pm, const QRectF &sr); + virtual void drawImage(const QRectF &r, const QImage &image, const QRectF &sr); + virtual void drawTextItem(const QPointF &p, const QTextItem &textItem); + virtual void drawTiledPixmap(const QRectF &r, const QPixmap &pixmap, const QPointF &s); + +protected: + QAlphaPaintEngine(QAlphaPaintEnginePrivate &data, PaintEngineFeatures devcaps = 0); + QRegion alphaClipping() const; + bool continueCall() const; + void flushAndInit(bool init = true); + void cleanUp(); +}; + +class QAlphaPaintEnginePrivate : public QPaintEnginePrivate +{ + Q_DECLARE_PUBLIC(QAlphaPaintEngine) +public: + QAlphaPaintEnginePrivate(); + ~QAlphaPaintEnginePrivate(); + + int m_pass; + QPicture *m_pic; + QPaintEngine *m_picengine; + QPainter *m_picpainter; + + QPaintEngine::PaintEngineFeatures m_savedcaps; + QPaintDevice *m_pdev; + + QRegion m_alphargn; + QRegion m_cliprgn; + + bool m_hasalpha; + bool m_alphaPen; + bool m_alphaBrush; + bool m_alphaOpacity; + bool m_advancedPen; + bool m_advancedBrush; + bool m_complexTransform; + bool m_emulateProjectiveTransforms; + bool m_continueCall; + + QTransform m_transform; + QPen m_pen; + + void addAlphaRect(const QRectF &rect); + QRectF addPenWidth(const QPainterPath &path); + void drawAlphaImage(const QRectF &rect); + QRect toRect(const QRectF &rect) const; + bool fullyContained(const QRectF &rect) const; + + void resetState(QPainter *p); +}; + +QT_END_NAMESPACE + +#endif // QT_NO_PRINTER + +#endif // QPAINTENGINE_ALPHA_P_H |