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39
40//
41// W A R N I N G
42// -------------
43//
44// This file is not part of the QtCanvas3D API. It exists purely as an
45// implementation detail. This header file may change from version to
46// version without notice, or even be removed.
47//
48// We mean it.
49
50#ifndef TEXIMAGE3D_P_H
51#define TEXIMAGE3D_P_H
52
53#include "context3d_p.h"
54#include "abstractobject3d_p.h"
55
56#include <QtCore/QUrl>
57#include <QtCore/QPointer>
58#include <QtGui/QImage>
59#include <QtNetwork/QNetworkAccessManager>
60#include <QtNetwork/QNetworkReply>
61
62QT_BEGIN_NAMESPACE
63
64QT_CANVAS3D_BEGIN_NAMESPACE
65
66class CanvasTextureImageFactory : public QObject
67{
68 Q_OBJECT
69 Q_DISABLE_COPY(CanvasTextureImageFactory)
70
71public:
72 static QObject *texture_image_factory_provider(QQmlEngine *engine, QJSEngine *scriptEngine);
73 static CanvasTextureImageFactory *factory(QQmlEngine *engine);
74 explicit CanvasTextureImageFactory(QQmlEngine *engine, QObject *parent = 0);
75 ~CanvasTextureImageFactory();
76
77 void handleImageLoadingStarted(CanvasTextureImage *image);
78 void notifyLoadedImages();
79
80 Q_INVOKABLE QJSValue newTexImage();
81 void handleImageDestroyed(CanvasTextureImage *image);
82
83private:
84 QQmlEngine *m_qmlEngine;
85 QList<CanvasTextureImage *> m_loadingImagesList;
86};
87
88class CanvasTextureImage : public CanvasAbstractObject
89{
90 Q_OBJECT
91 Q_DISABLE_COPY(CanvasTextureImage)
92 Q_PROPERTY(QUrl src READ src WRITE setSrc NOTIFY srcChanged)
93 Q_PROPERTY(TextureImageState imageState READ imageState NOTIFY imageStateChanged)
94 Q_PROPERTY(int width READ width NOTIFY widthChanged)
95 Q_PROPERTY(int height READ height NOTIFY heightChanged)
96 Q_PROPERTY(QString errorString READ errorString NOTIFY errorStringChanged)
97 Q_ENUMS(TextureImageState)
98
99public:
100 enum TextureImageState {
101 INITIALIZED = 0,
102 LOAD_PENDING,
103 LOADING,
104 LOADING_FINISHED,
105 LOADING_ERROR
106 };
107
108 explicit CanvasTextureImage(CanvasTextureImageFactory *parent, QQmlEngine *engine);
109 virtual ~CanvasTextureImage();
110
111 Q_INVOKABLE QJSValue create();
112 Q_INVOKABLE ulong id();
113 Q_INVOKABLE QJSValue resize(int width, int height);
114
115 QVariant *anything() const;
116 void setAnything(QVariant *value);
117
118 const QUrl &src() const;
119 void setSrc(const QUrl &src);
120 TextureImageState imageState() const;
121 int width() const;
122 int height() const;
123 QString errorString() const;
124
125 void emitImageLoaded();
126 void emitImageLoadingError();
127
128 void load();
129 void handleReply();
130 QImage &getImage();
131 uchar *convertToFormat(CanvasContext::glEnums format, bool flipY = false, bool premultipliedAlpha = false);
132
133 friend QDebug operator<< (QDebug d, const CanvasTextureImage *buffer);
134
135private:
136 void setImageState(TextureImageState state);
137 explicit CanvasTextureImage(const QImage &source, int width, int height,
138 CanvasTextureImageFactory *parent, QQmlEngine *engine);
139
140signals:
141 void srcChanged(QUrl source);
142 void imageStateChanged(TextureImageState state);
143 void widthChanged(int width);
144 void heightChanged(int height);
145 void errorStringChanged(const QString errorString);
146 void anythingChanged(QVariant *value);
147 void imageLoadingStarted(CanvasTextureImage *image);
148 void imageLoaded(CanvasTextureImage *image);
149 void imageLoadingFailed(CanvasTextureImage *image);
150
151private:
152 void cleanupNetworkReply();
153
154 QQmlEngine *m_engine;
155 QNetworkAccessManager *m_networkAccessManager; // not owned
156 QNetworkReply *m_networkReply;
157 QImage m_image;
158 QUrl m_source;
159 TextureImageState m_state;
160 QString m_errorString;
161 uchar *m_pixelCache;
162 CanvasContext::glEnums m_pixelCacheFormat;
163 bool m_pixelCacheFlipY;
164 QImage m_glImage;
165 QVariant *m_anyValue;
166 QPointer<CanvasTextureImageFactory> m_parentFactory;
167};
168
169QT_CANVAS3D_END_NAMESPACE
170
171QT_END_NAMESPACE
172
173#endif // TEXIMAGE3D_P_H
174

source code of qtcanvas3d/src/imports/qtcanvas3d/teximage3d_p.h