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/****************************************************************************
**
** Copyright (C) 2016 The Qt Company Ltd.
** Contact: https://www.qt.io/licensing/
**
** This file is part of the QtWidgets module of the Qt Toolkit.
**
** $QT_BEGIN_LICENSE:LGPL$
** Commercial License Usage
** Licensees holding valid commercial Qt licenses may use this file in
** accordance with the commercial license agreement provided with the
** Software or, alternatively, in accordance with the terms contained in
** a written agreement between you and The Qt Company. For licensing terms
** and conditions see https://www.qt.io/terms-conditions. For further
** information use the contact form at https://www.qt.io/contact-us.
**
** GNU Lesser General Public License Usage
** Alternatively, this file may be used under the terms of the GNU Lesser
** General Public License version 3 as published by the Free Software
** Foundation and appearing in the file LICENSE.LGPL3 included in the
** packaging of this file. Please review the following information to
** ensure the GNU Lesser General Public License version 3 requirements
** will be met: https://www.gnu.org/licenses/lgpl-3.0.html.
**
** 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
** Qt Foundation. The licenses are as published by the Free Software
** Foundation and appearing in the file LICENSE.GPL2 and LICENSE.GPL3
** included in the packaging of this file. Please review the following
** information to ensure the GNU General Public License requirements will
** be met: https://www.gnu.org/licenses/gpl-2.0.html and
** https://www.gnu.org/licenses/gpl-3.0.html.
**
** $QT_END_LICENSE$
**
****************************************************************************/
#ifndef QPIXMAPFILTER_H
#define QPIXMAPFILTER_H
//
// W A R N I N G
// -------------
//
// This file is not part of the Qt API. It exists purely as an
// implementation detail. This header file may change from version to
// version without notice, or even be removed.
//
// We mean it.
//
#include <QtWidgets/private/qtwidgetsglobal_p.h>
#include <QtCore/qnamespace.h>
#include <QtGui/qpixmap.h>
#include <QtWidgets/qgraphicseffect.h>
QT_REQUIRE_CONFIG(graphicseffect);
QT_BEGIN_NAMESPACE
class QPainter;
class QPlatformPixmap;
class QPixmapFilterPrivate;
class Q_WIDGETS_EXPORT QPixmapFilter : public QObject
{
Q_OBJECT
Q_DECLARE_PRIVATE(QPixmapFilter)
public:
virtual ~QPixmapFilter() = 0;
enum FilterType {
ConvolutionFilter,
ColorizeFilter,
DropShadowFilter,
BlurFilter,
UserFilter = 1024
};
FilterType type() const;
virtual QRectF boundingRectFor(const QRectF &rect) const;
virtual void draw(QPainter *painter, const QPointF &p, const QPixmap &src, const QRectF &srcRect = QRectF()) const = 0;
protected:
QPixmapFilter(QPixmapFilterPrivate &d, FilterType type, QObject *parent);
QPixmapFilter(FilterType type, QObject *parent);
};
class QPixmapConvolutionFilterPrivate;
class Q_WIDGETS_EXPORT QPixmapConvolutionFilter : public QPixmapFilter
{
Q_OBJECT
Q_DECLARE_PRIVATE(QPixmapConvolutionFilter)
public:
QPixmapConvolutionFilter(QObject *parent = 0);
~QPixmapConvolutionFilter();
void setConvolutionKernel(const qreal *matrix, int rows, int columns);
QRectF boundingRectFor(const QRectF &rect) const Q_DECL_OVERRIDE;
void draw(QPainter *painter, const QPointF &dest, const QPixmap &src, const QRectF &srcRect = QRectF()) const Q_DECL_OVERRIDE;
private:
friend class QGLPixmapConvolutionFilter;
friend class QVGPixmapConvolutionFilter;
const qreal *convolutionKernel() const;
int rows() const;
int columns() const;
};
class QPixmapBlurFilterPrivate;
class Q_WIDGETS_EXPORT QPixmapBlurFilter : public QPixmapFilter
{
Q_OBJECT
Q_DECLARE_PRIVATE(QPixmapBlurFilter)
public:
QPixmapBlurFilter(QObject *parent = 0);
~QPixmapBlurFilter();
void setRadius(qreal radius);
void setBlurHints(QGraphicsBlurEffect::BlurHints hints);
qreal radius() const;
QGraphicsBlurEffect::BlurHints blurHints() const;
QRectF boundingRectFor(const QRectF &rect) const Q_DECL_OVERRIDE;
void draw(QPainter *painter, const QPointF &dest, const QPixmap &src, const QRectF &srcRect = QRectF()) const Q_DECL_OVERRIDE;
private:
friend class QGLPixmapBlurFilter;
};
class QPixmapColorizeFilterPrivate;
class Q_WIDGETS_EXPORT QPixmapColorizeFilter : public QPixmapFilter
{
Q_OBJECT
Q_DECLARE_PRIVATE(QPixmapColorizeFilter)
public:
QPixmapColorizeFilter(QObject *parent = 0);
~QPixmapColorizeFilter();
void setColor(const QColor& color);
QColor color() const;
void setStrength(qreal strength);
qreal strength() const;
void draw(QPainter *painter, const QPointF &dest, const QPixmap &src, const QRectF &srcRect = QRectF()) const Q_DECL_OVERRIDE;
};
class QPixmapDropShadowFilterPrivate;
class Q_WIDGETS_EXPORT QPixmapDropShadowFilter : public QPixmapFilter
{
Q_OBJECT
Q_DECLARE_PRIVATE(QPixmapDropShadowFilter)
public:
QPixmapDropShadowFilter(QObject *parent = 0);
~QPixmapDropShadowFilter();
QRectF boundingRectFor(const QRectF &rect) const Q_DECL_OVERRIDE;
void draw(QPainter *p, const QPointF &pos, const QPixmap &px, const QRectF &src = QRectF()) const Q_DECL_OVERRIDE;
qreal blurRadius() const;
void setBlurRadius(qreal radius);
QColor color() const;
void setColor(const QColor &color);
QPointF offset() const;
void setOffset(const QPointF &offset);
inline void setOffset(qreal dx, qreal dy) { setOffset(QPointF(dx, dy)); }
};
QT_END_NAMESPACE
#endif // QPIXMAPFILTER_H
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