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     2 **

     3 ** Copyright (C) 2009 Nokia Corporation and/or its subsidiary(-ies).

     4 ** All rights reserved.

     5 ** Contact: Nokia Corporation (qt-info@nokia.com)

     6 **

     7 ** This file is part of the demonstration applications of the Qt Toolkit.

     8 **

     9 ** $QT_BEGIN_LICENSE:LGPL$

    10 ** No Commercial Usage

    11 ** This file contains pre-release code and may not be distributed.

    12 ** You may use this file in accordance with the terms and conditions

    13 ** contained in the Technology Preview License Agreement accompanying

    14 ** this package.

    15 **

    16 ** GNU Lesser General Public License Usage

    17 ** Alternatively, this file may be used under the terms of the GNU Lesser

    18 ** General Public License version 2.1 as published by the Free Software

    19 ** Foundation and appearing in the file LICENSE.LGPL included in the

    20 ** packaging of this file.  Please review the following information to

    21 ** ensure the GNU Lesser General Public License version 2.1 requirements

    22 ** will be met: http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html.

    23 **

    24 ** In addition, as a special exception, Nokia gives you certain additional

    25 ** rights.  These rights are described in the Nokia Qt LGPL Exception

    26 ** version 1.1, included in the file LGPL_EXCEPTION.txt in this package.

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    36 **

    37 **

    38 ** $QT_END_LICENSE$

    39 **

    40 ****************************************************************************/

    41 

    42 #ifndef SCENE_H

    43 #define SCENE_H

    44 

    45 //#include <GL/glew.h>

    46 #include "glextensions.h"

    47 

    48 #include <QtGui>

    49 #include <QtOpenGL>

    50 

    51 #include "roundedbox.h"

    52 #include "gltrianglemesh.h"

    53 #include "trackball.h"

    54 #include "glbuffers.h"

    55 #include "qtbox.h"

    56 

    57 #define PI 3.14159265358979

    58 

    59 QT_BEGIN_NAMESPACE

    60 class QMatrix4x4;

    61 QT_END_NAMESPACE

    62 

    63 class ParameterEdit : public QWidget

    64 {

    65 public:

    66     virtual void emitChange() = 0;

    67 };

    68 

    69 class ColorEdit : public ParameterEdit

    70 {

    71     Q_OBJECT

    72 public:

    73     ColorEdit(QRgb initialColor, int id);

    74     QRgb color() const {return m_color;}

    75     virtual void emitChange() {emit colorChanged(m_color, m_id);}

    76 public slots:

    77     void editDone();

    78 signals:

    79     void colorChanged(QRgb color, int id);

    80 protected:

    81     virtual void mousePressEvent(QMouseEvent *event);

    82     void setColor(QRgb color); // also emits colorChanged()

    83 private:

    84     QGraphicsScene *m_dialogParentScene;

    85     QLineEdit *m_lineEdit;

    86     QFrame *m_button;

    87     QRgb m_color;

    88     int m_id;

    89 };

    90 

    91 class FloatEdit : public ParameterEdit

    92 {

    93     Q_OBJECT

    94 public:

    95     FloatEdit(float initialValue, int id);

    96     float value() const {return m_value;}

    97     virtual void emitChange() {emit valueChanged(m_value, m_id);}

    98 public slots:

    99     void editDone();

   100 signals:

   101     void valueChanged(float value, int id);

   102 private:

   103     QGraphicsScene *m_dialogParentScene;

   104     QLineEdit *m_lineEdit;

   105     float m_value;

   106     int m_id;

   107 };

   108 

   109 class GraphicsWidget : public QGraphicsProxyWidget

   110 {

   111 public:

   112     GraphicsWidget() : QGraphicsProxyWidget(0, Qt::Window) {}

   113 protected:

   114     virtual QVariant itemChange(GraphicsItemChange change, const QVariant &value);

   115     virtual void resizeEvent(QGraphicsSceneResizeEvent *event);

   116     virtual void paint(QPainter *painter, const QStyleOptionGraphicsItem *option, QWidget *widget);

   117 };

   118 

   119 class TwoSidedGraphicsWidget : public QObject

   120 {

   121     Q_OBJECT

   122 public:

   123     TwoSidedGraphicsWidget(QGraphicsScene *scene);

   124     void setWidget(int index, QWidget *widget);

   125     QWidget *widget(int index);

   126 public slots:

   127     void flip();

   128 protected slots:

   129     void animateFlip();

   130 private:

   131     GraphicsWidget *m_proxyWidgets[2];

   132     int m_current;

   133     int m_angle; // angle in degrees

   134     int m_delta;

   135 };

   136 

   137 class RenderOptionsDialog : public QDialog

   138 {

   139     Q_OBJECT

   140 public:

   141     RenderOptionsDialog();

   142     int addTexture(const QString &name);

   143     int addShader(const QString &name);

   144     void emitParameterChanged();

   145 protected slots:

   146     void setColorParameter(QRgb color, int id);

   147     void setFloatParameter(float value, int id);

   148 signals:

   149     void dynamicCubemapToggled(int);

   150     void colorParameterChanged(const QString &, QRgb);

   151     void floatParameterChanged(const QString &, float);

   152     void textureChanged(int);

   153     void shaderChanged(int);

   154     void doubleClicked();

   155 protected:

   156     virtual void mouseDoubleClickEvent(QMouseEvent *event);

   157 

   158     QVector<QByteArray> m_parameterNames;

   159     QComboBox *m_textureCombo;

   160     QComboBox *m_shaderCombo;

   161     QVector<ParameterEdit *> m_parameterEdits;

   162 };

   163 

   164 class ItemDialog : public QDialog

   165 {

   166     Q_OBJECT

   167 public:

   168     enum ItemType {

   169         QtBoxItem,

   170         CircleItem,

   171         SquareItem,

   172     };

   173 

   174     ItemDialog();

   175 public slots:

   176     void triggerNewQtBox();

   177     void triggerNewCircleItem();

   178     void triggerNewSquareItem();

   179 signals:

   180     void doubleClicked();

   181     void newItemTriggered(ItemDialog::ItemType type);

   182 protected:

   183     virtual void mouseDoubleClickEvent(QMouseEvent *event);

   184 };

   185 

   186 class Scene : public QGraphicsScene

   187 {

   188     Q_OBJECT

   189 public:

   190     Scene(int width, int height, int maxTextureSize);

   191     ~Scene();

   192     virtual void drawBackground(QPainter *painter, const QRectF &rect);

   193 

   194 public slots:

   195     void setShader(int index);

   196     void setTexture(int index);

   197     void toggleDynamicCubemap(int state);

   198     void setColorParameter(const QString &name, QRgb color);

   199     void setFloatParameter(const QString &name, float value);

   200     void newItem(ItemDialog::ItemType type);

   201 protected:

   202     void renderBoxes(const QMatrix4x4 &view, int excludeBox = -2);

   203     void setStates();

   204     void setLights();

   205     void defaultStates();

   206     void renderCubemaps();

   207 

   208     virtual void mousePressEvent(QGraphicsSceneMouseEvent *event);

   209     virtual void mouseReleaseEvent(QGraphicsSceneMouseEvent *event);

   210     virtual void mouseMoveEvent(QGraphicsSceneMouseEvent *event);

   211     virtual void wheelEvent(QGraphicsSceneWheelEvent * event);

   212 private:

   213     void initGL();

   214     QPointF pixelPosToViewPos(const QPointF& p);

   215 

   216     QTime m_time;

   217     int m_lastTime;

   218     int m_mouseEventTime;

   219     int m_distExp;

   220     int m_frame;

   221     int m_maxTextureSize;

   222 

   223     int m_currentShader;

   224     int m_currentTexture;

   225     bool m_dynamicCubemap;

   226     bool m_updateAllCubemaps;

   227 

   228     RenderOptionsDialog *m_renderOptions;

   229     ItemDialog *m_itemDialog;

   230     QTimer *m_timer;

   231     GLRoundedBox *m_box;

   232     TrackBall m_trackBalls[3];

   233     QVector<GLTexture *> m_textures;

   234     GLTextureCube *m_environment;

   235     GLTexture3D *m_noise;

   236     GLRenderTargetCube *m_mainCubemap;

   237     QVector<GLRenderTargetCube *> m_cubemaps;

   238     QVector<QGLShaderProgram *> m_programs;

   239     QGLShader *m_vertexShader;

   240     QVector<QGLShader *> m_fragmentShaders;

   241     QGLShader *m_environmentShader;

   242     QGLShaderProgram *m_environmentProgram;

   243 };

   244 

   245 #endif