| 1 | // Copyright (C) 2016 The Qt Company Ltd. |
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| 2 | // SPDX-License-Identifier: LicenseRef-Qt-Commercial OR GPL-3.0-only |
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| 3 | |
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| 4 | // |
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| 5 | // W A R N I N G |
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| 6 | // ------------- |
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| 7 | // |
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| 8 | // This file is not part of the QtDataVisualization API. It exists purely as an |
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| 9 | // implementation detail. This header file may change from version to |
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| 10 | // version without notice, or even be removed. |
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| 11 | // |
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| 12 | // We mean it. |
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| 13 | |
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| 14 | #ifndef DRAWER_P_H |
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| 15 | #define DRAWER_P_H |
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| 16 | |
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| 17 | #include <private/datavisualizationglobal_p.h> |
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| 18 | #include <private/labelitem_p.h> |
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| 19 | #include <private/abstractrenderitem_p.h> |
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| 20 | |
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| 21 | #include <QtDataVisualization/q3dbars.h> |
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| 22 | #include <QtDataVisualization/q3dtheme.h> |
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| 23 | |
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| 24 | QT_BEGIN_NAMESPACE |
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| 25 | |
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| 26 | class ShaderHelper; |
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| 27 | class ObjectHelper; |
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| 28 | class AbstractObjectHelper; |
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| 29 | class SurfaceObject; |
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| 30 | class TextureHelper; |
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| 31 | class Q3DCamera; |
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| 32 | class Abstract3DRenderer; |
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| 33 | class QQuaternion; |
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| 34 | class ScatterPointBufferHelper; |
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| 35 | |
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| 36 | class Drawer : public QObject, public QOpenGLFunctions |
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| 37 | { |
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| 38 | Q_OBJECT |
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| 39 | |
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| 40 | public: |
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| 41 | enum LabelPosition { |
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| 42 | LabelBelow = 0, |
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| 43 | LabelLow, |
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| 44 | LabelMid, |
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| 45 | LabelHigh, |
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| 46 | LabelOver, |
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| 47 | LabelBottom, // Absolute positions from here onward, used for axes (QDataItem is ignored) |
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| 48 | LabelTop, |
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| 49 | LabelLeft, |
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| 50 | LabelRight |
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| 51 | }; |
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| 52 | |
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| 53 | public: |
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| 54 | explicit Drawer(Q3DTheme *theme); |
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| 55 | ~Drawer(); |
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| 56 | |
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| 57 | void initializeOpenGL(); |
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| 58 | |
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| 59 | void setTheme(Q3DTheme *theme); |
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| 60 | Q3DTheme *theme() const; |
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| 61 | QFont font() const; |
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| 62 | inline GLfloat scaledFontSize() const { return m_scaledFontSize; } |
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| 63 | |
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| 64 | void drawObject(ShaderHelper *shader, AbstractObjectHelper *object, GLuint textureId = 0, |
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| 65 | GLuint depthTextureId = 0, GLuint textureId3D = 0); |
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| 66 | void drawSelectionObject(ShaderHelper *shader, AbstractObjectHelper *object); |
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| 67 | void drawSurfaceGrid(ShaderHelper *shader, SurfaceObject *object); |
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| 68 | void drawPoint(ShaderHelper *shader); |
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| 69 | void drawPoints(ShaderHelper *shader, ScatterPointBufferHelper *object, GLuint textureId); |
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| 70 | void drawLine(ShaderHelper *shader); |
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| 71 | void drawLabel(const AbstractRenderItem &item, const LabelItem &labelItem, |
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| 72 | const QMatrix4x4 &viewmatrix, const QMatrix4x4 &projectionmatrix, |
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| 73 | const QVector3D &positionComp, const QQuaternion &rotation, GLfloat itemHeight, |
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| 74 | QAbstract3DGraph::SelectionFlags mode, ShaderHelper *shader, ObjectHelper *object, |
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| 75 | const Q3DCamera *camera, bool useDepth = false, bool rotateAlong = false, |
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| 76 | LabelPosition position = LabelOver, |
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| 77 | Qt::Alignment alignment = Qt::AlignCenter, bool isSlicing = false, |
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| 78 | bool isSelecting = false); |
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| 79 | |
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| 80 | void generateSelectionLabelTexture(Abstract3DRenderer *item); |
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| 81 | void generateLabelItem(LabelItem &item, const QString &text, int widestLabel = 0); |
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| 82 | |
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| 83 | Q_SIGNALS: |
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| 84 | void drawerChanged(); |
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| 85 | |
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| 86 | private: |
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| 87 | Q3DTheme *m_theme; |
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| 88 | TextureHelper *m_textureHelper; |
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| 89 | GLuint m_pointbuffer; |
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| 90 | GLuint m_linebuffer; |
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| 91 | GLfloat m_scaledFontSize; |
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| 92 | }; |
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| 93 | |
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| 94 | QT_END_NAMESPACE |
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| 95 | |
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| 96 | #endif |
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| 97 | |
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