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130 lines
4 KiB
C++
130 lines
4 KiB
C++
/****************************************************************************
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**
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** Copyright (C) 2015 The Qt Company Ltd.
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** Copyright (C) 2016-2019 Ivailo Monev
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**
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** This file is part of the QtGui module of the Katie Toolkit.
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**
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** $QT_BEGIN_LICENSE:LGPL$
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** GNU Lesser General Public License Usage
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** Alternatively, this file may be used under the terms of the GNU Lesser
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** General Public License version 2.1 or version 3 as published by the Free
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** Software Foundation and appearing in the file LICENSE.LGPLv21 and
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** LICENSE.LGPLv3 included in the packaging of this file. Please review the
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** following information to ensure the GNU Lesser General Public License
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** requirements will be met: https://www.gnu.org/licenses/lgpl.html and
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** http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html.
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**
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** As a special exception, The Qt Company gives you certain additional
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** rights. These rights are described in The Qt Company LGPL Exception
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** version 1.1, included in the file LGPL_EXCEPTION.txt in this package.
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**
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** GNU General Public License Usage
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** Alternatively, this file may be used under the terms of the GNU
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** General Public License version 3.0 as published by the Free Software
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** Foundation and appearing in the file LICENSE.GPL included in the
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** packaging of this file. Please review the following information to
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** ensure the GNU General Public License version 3.0 requirements will be
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** met: http://www.gnu.org/copyleft/gpl.html.
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**
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** $QT_END_LICENSE$
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**
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****************************************************************************/
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#ifndef QPAINTENGINE_ALPHA_P_H
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#define QPAINTENGINE_ALPHA_P_H
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//
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// W A R N I N G
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// -------------
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//
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// This file is not part of the Katie API. It exists for the convenience
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// of other Qt classes. This header file may change from version to
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// version without notice, or even be removed.
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//
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// We mean it.
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//
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#ifndef QT_NO_PRINTER
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#include "qpaintengine_p.h"
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#include "qimage.h"
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#include "qpen.h"
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QT_BEGIN_NAMESPACE
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class QAlphaPaintEnginePrivate;
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class QAlphaPaintEngine : public QPaintEngine
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{
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Q_DECLARE_PRIVATE(QAlphaPaintEngine)
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public:
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~QAlphaPaintEngine();
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virtual bool begin(QPaintDevice *pdev);
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virtual bool end();
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virtual void updateState(const QPaintEngineState &state);
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virtual void drawPath(const QPainterPath &path);
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virtual void drawPolygon(const QPointF *points, int pointCount, PolygonDrawMode mode);
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virtual void drawPixmap(const QRectF &r, const QPixmap &pm, const QRectF &sr);
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virtual void drawImage(const QRectF &r, const QImage &image, const QRectF &sr,
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Qt::ImageConversionFlags flags = Qt::AutoColor);
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virtual void drawTextItem(const QPointF &p, const QTextItem &textItem);
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virtual void drawTiledPixmap(const QRectF &r, const QPixmap &pixmap, const QPointF &s);
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protected:
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QAlphaPaintEngine(QAlphaPaintEnginePrivate &data, PaintEngineFeatures devcaps = 0);
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QRegion alphaClipping() const;
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bool continueCall() const;
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void flushAndInit(bool init = true);
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void cleanUp();
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};
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class QAlphaPaintEnginePrivate : public QPaintEnginePrivate
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{
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Q_DECLARE_PUBLIC(QAlphaPaintEngine)
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public:
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QAlphaPaintEnginePrivate();
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~QAlphaPaintEnginePrivate();
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int m_pass;
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QImage *m_pic;
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QPaintEngine *m_picengine;
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QPainter *m_picpainter;
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QPaintEngine::PaintEngineFeatures m_savedcaps;
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QPaintDevice *m_pdev;
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QRegion m_alphargn;
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QRegion m_cliprgn;
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bool m_hasalpha;
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bool m_alphaPen;
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bool m_alphaBrush;
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bool m_alphaOpacity;
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bool m_advancedPen;
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bool m_advancedBrush;
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bool m_complexTransform;
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bool m_emulateProjectiveTransforms;
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bool m_continueCall;
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QTransform m_transform;
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QPen m_pen;
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void addAlphaRect(const QRectF &rect);
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QRectF addPenWidth(const QPainterPath &path);
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void drawAlphaImage(const QRectF &rect);
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QRect toRect(const QRectF &rect) const;
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bool fullyContained(const QRectF &rect) const;
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void resetState(QPainter *p);
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};
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QT_END_NAMESPACE
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#endif // QT_NO_PRINTER
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#endif // QPAINTENGINE_ALPHA_P_H
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