drawer_p.h - mozsearch

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// Copyright (C) 2016 The Qt Company Ltd.

// SPDX-License-Identifier: LicenseRef-Qt-Commercial OR GPL-3.0-only

//

//  W A R N I N G

//  -------------

//

// This file is not part of the QtDataVisualization 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.

#ifndef DRAWER_P_H

#define DRAWER_P_H

#include <private/datavisualizationglobal_p.h>

#include <private/labelitem_p.h>

#include <private/abstractrenderitem_p.h>

#include <QtDataVisualization/q3dbars.h>

#include <QtDataVisualization/q3dtheme.h>

QT_BEGIN_NAMESPACE

class ShaderHelper;

class ObjectHelper;

class AbstractObjectHelper;

class SurfaceObject;

class TextureHelper;

class Q3DCamera;

class Abstract3DRenderer;

class QQuaternion;

class ScatterPointBufferHelper;

class Drawer : public QObject, public QOpenGLFunctions

    Q_OBJECT

public:

    enum LabelPosition {

        LabelBelow = 0,

        LabelLow,

        LabelMid,

        LabelHigh,

        LabelOver,

        LabelBottom,    // Absolute positions from here onward, used for axes (QDataItem is ignored)

        LabelTop,

        LabelLeft,

        LabelRight

};

public:

    explicit Drawer(Q3DTheme *theme);

    ~Drawer();

    void initializeOpenGL();

    void setTheme(Q3DTheme *theme);

    Q3DTheme *theme() const;

    QFont font() const;

    inline GLfloat scaledFontSize() const { return m_scaledFontSize; }

    void drawObject(ShaderHelper *shader, AbstractObjectHelper *object, GLuint textureId = 0,

                    GLuint depthTextureId = 0, GLuint textureId3D = 0);

    void drawSelectionObject(ShaderHelper *shader, AbstractObjectHelper *object);

    void drawSurfaceGrid(ShaderHelper *shader, SurfaceObject *object);

    void drawPoint(ShaderHelper *shader);

    void drawPoints(ShaderHelper *shader, ScatterPointBufferHelper *object, GLuint textureId);

    void drawLine(ShaderHelper *shader);

    void drawLabel(const AbstractRenderItem &item, const LabelItem &labelItem,

                   const QMatrix4x4 &viewmatrix, const QMatrix4x4 &projectionmatrix,

                   const QVector3D &positionComp, const QQuaternion &rotation, GLfloat itemHeight,

                   QAbstract3DGraph::SelectionFlags mode, ShaderHelper *shader, ObjectHelper *object,

                   const Q3DCamera *camera, bool useDepth = false, bool rotateAlong = false,

                   LabelPosition position = LabelOver,

                   Qt::Alignment alignment = Qt::AlignCenter, bool isSlicing = false,

                   bool isSelecting = false);

    void generateSelectionLabelTexture(Abstract3DRenderer *item);

    void generateLabelItem(LabelItem &item, const QString &text, int widestLabel = 0);

Q_SIGNALS:

    void drawerChanged();

private:

    Q3DTheme *m_theme;

    TextureHelper *m_textureHelper;

    GLuint m_pointbuffer;

    GLuint m_linebuffer;

    GLfloat m_scaledFontSize;

};

QT_END_NAMESPACE

#endif