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/****************************************************************************
**
** Copyright (C) 2014 Digia Plc and/or its subsidiary(-ies).
** Contact: http://www.qt-project.org/legal
**
** This file is part of the QML Shaders plugin of the Qt Toolkit.
**
** $QT_BEGIN_LICENSE:LGPL21$
** 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 Digia. For licensing terms and
** conditions see http://qt.digia.com/licensing. For further information
** use the contact form at http://qt.digia.com/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 2.1 or version 3 as published by the Free
** Software Foundation and appearing in the file LICENSE.LGPLv21 and
** LICENSE.LGPLv3 included in the packaging of this file. Please review the
** following information to ensure the GNU Lesser General Public License
** requirements will be met: https://www.gnu.org/licenses/lgpl.html and
** http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html.
**
** In addition, as a special exception, Digia gives you certain additional
** rights. These rights are described in the Digia Qt LGPL Exception
** version 1.1, included in the file LGPL_EXCEPTION.txt in this package.
**
** $QT_END_LICENSE$
**
****************************************************************************/
#ifndef SHADEREFFECTSOURCE_H
#define SHADEREFFECTSOURCE_H
#include <QDeclarativeItem>
#include <QGLFunctions>
#include <QPointer>
QT_BEGIN_NAMESPACE
class ShaderEffectBuffer;
class ShaderEffectSource : public QDeclarativeItem
{
Q_OBJECT
Q_PROPERTY(QDeclarativeItem *sourceItem READ sourceItem WRITE setSourceItem NOTIFY sourceItemChanged)
Q_PROPERTY(QRectF sourceRect READ sourceRect WRITE setSourceRect NOTIFY sourceRectChanged)
Q_PROPERTY(QSize textureSize READ textureSize WRITE setTextureSize NOTIFY textureSizeChanged)
Q_PROPERTY(bool live READ isLive WRITE setLive NOTIFY liveChanged)
Q_PROPERTY(bool hideSource READ hideSource WRITE setHideSource NOTIFY hideSourceChanged)
Q_PROPERTY(WrapMode wrapMode READ wrapMode WRITE setWrapMode NOTIFY wrapModeChanged)
Q_ENUMS(WrapMode)
Q_ENUMS(Format)
public:
enum WrapMode {
ClampToEdge,
RepeatHorizontally,
RepeatVertically,
Repeat
};
enum Format {
Alpha = GL_ALPHA,
RGB = GL_RGB,
RGBA = GL_RGBA
};
ShaderEffectSource(QDeclarativeItem *parent = 0);
virtual ~ShaderEffectSource();
QDeclarativeItem *sourceItem() const { return m_sourceItem.data(); }
void setSourceItem(QDeclarativeItem *item);
QRectF sourceRect() const { return m_sourceRect; };
void setSourceRect(const QRectF &rect);
QSize textureSize() const { return m_textureSize; }
void setTextureSize(const QSize &size);
bool isLive() const { return m_live; }
void setLive(bool s);
bool hideSource() const { return m_hideSource; }
void setHideSource(bool hide);
WrapMode wrapMode() const { return m_wrapMode; };
void setWrapMode(WrapMode mode);
bool isActive() const { return m_refs; }
void bind();
void refFromEffectItem();
void derefFromEffectItem();
void updateBackbuffer();
ShaderEffectBuffer* fbo() { return m_fbo; }
bool isDirtyTexture() { return m_dirtyTexture; }
bool isMirrored() { return m_mirrored; }
Q_INVOKABLE void grab();
Q_SIGNALS:
void sourceItemChanged();
void sourceRectChanged();
void textureSizeChanged();
void formatChanged();
void liveChanged();
void hideSourceChanged();
void activeChanged();
void repaintRequired();
void wrapModeChanged();
public Q_SLOTS:
void markSceneGraphDirty();
void markSourceSizeDirty();
void markSourceItemDirty();
private:
void updateSizeAndTexture();
void attachSourceItem();
void detachSourceItem();
private:
QPointer<QDeclarativeItem> m_sourceItem;
WrapMode m_wrapMode;
QRectF m_sourceRect;
QSize m_textureSize;
Format m_format;
QSize m_size;
ShaderEffectBuffer *m_fbo;
ShaderEffectBuffer *m_multisampledFbo;
int m_refs;
bool m_dirtyTexture : 1;
bool m_dirtySceneGraph : 1;
bool m_multisamplingSupported : 1;
bool m_checkedForMultisamplingSupport : 1;
bool m_live : 1;
bool m_hideSource : 1;
bool m_mirrored : 1;
};
QT_END_NAMESPACE
#endif // SHADEREFFECTSOURCE_H
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