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Дата изменения: Unknown Дата индексирования: Tue Oct 2 05:15:37 2012 Кодировка: Поисковые слова: vallis |
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00001 /* 00002 * Stellarium 00003 * Copyright (C) 2006 Fabien Chereau 00004 * 00005 * This program is free software; you can redistribute it and/or 00006 * modify it under the terms of the GNU General Public License 00007 * as published by the Free Software Foundation; either version 2 00008 * of the License, or (at your option) any later version. 00009 * 00010 * This program is distributed in the hope that it will be useful, 00011 * but WITHOUT ANY WARRANTY; without even the implied warranty of 00012 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 00013 * GNU General Public License for more details. 00014 * 00015 * You should have received a copy of the GNU General Public License 00016 * along with this program; if not, write to the Free Software 00017 * Foundation, Inc., 51 Franklin Street, Suite 500, Boston, MA 02110-1335, USA. 00018 */ 00019 00020 #ifndef _STELTEXTURE_HPP_ 00021 #define _STELTEXTURE_HPP_ 00022 00023 #include "StelTextureTypes.hpp" 00024 00025 #include <QObject> 00026 #include <QImage> 00027 #include <QtOpenGL> 00028 //FIXME: After fully migrate to Qt 4.8 this condition need drop 00029 #if QT_VERSION>=0x040800 00030 #include <QGLFunctions> 00031 #endif 00032 00033 class QFile; 00034 class StelTextureMgr; 00035 class QNetworkReply; 00036 00037 #ifndef GL_CLAMP_TO_EDGE 00038 #define GL_CLAMP_TO_EDGE 0x812F 00039 #endif 00040 00041 // This class is just used internally to load the texture data. 00042 class ImageLoader : QObject 00043 { 00044 Q_OBJECT 00045 00046 private: 00047 friend class StelTextureMgr; 00048 friend class StelTexture; 00049 00050 ImageLoader(const QString& path, int delay); 00051 void abort(); 00052 00053 signals: 00054 void finished(QImage); 00055 void error(const QString& errorMsg); 00056 00057 public slots: 00058 void start(); 00059 00060 private slots: 00061 void onNetworkReply(); 00062 void directLoad(); 00063 00064 private: 00065 QString path; 00066 QNetworkReply* networkReply; 00067 }; 00068 00072 class StelTexture 00073 //FIXME: After fully migrate to Qt 4.8 this condition need drop 00074 #if QT_VERSION>=0x040800 00075 : public QObject, protected QGLFunctions 00076 #else 00077 : public QObject 00078 #endif 00079 { 00080 Q_OBJECT 00081 00082 public: 00084 struct StelTextureParams 00085 { 00086 StelTextureParams(bool qgenerateMipmaps=false, GLint afiltering=GL_LINEAR, GLint awrapMode=GL_CLAMP_TO_EDGE) : 00087 generateMipmaps(qgenerateMipmaps), 00088 filtering(afiltering), 00089 wrapMode(awrapMode) {;} 00091 bool generateMipmaps; 00093 GLint filtering; 00095 GLint wrapMode; 00096 }; 00097 00099 virtual ~StelTexture(); 00100 00104 00105 bool bind(); 00106 00108 bool canBind() const {return id!=0;} 00109 00111 bool getDimensions(int &width, int &height); 00112 00115 const QString& getErrorMessage() const {return errorMessage;} 00116 00119 const QString& getFullPath() const {return fullPath;} 00120 00122 bool isLoading() const {return isLoadingImage && !canBind();} 00123 00127 bool glLoad(); 00128 00129 signals: 00134 void loadingProcessFinished(bool error); 00135 00136 private slots: 00138 void onImageLoaded(QImage image); 00140 void onLoadingError(const QString& errorMessage) {reportError(errorMessage);} 00141 00142 private: 00143 friend class StelTextureMgr; 00144 friend class TextureLoader; 00145 00147 StelTexture(); 00148 00151 void reportError(const QString& errorMessage); 00152 00153 StelTextureParams loadParams; 00154 00156 ImageLoader* loader; 00157 00159 bool downloaded; 00161 bool isLoadingImage; 00162 00164 QString fullPath; 00165 00167 QImage qImage; 00168 00170 QString fileExtension; 00171 00173 bool errorOccured; 00174 00176 QString errorMessage; 00177 00179 GLuint id; 00180 00182 float avgLuminance; 00183 00184 GLsizei width; 00185 GLsizei height; 00186 }; 00187 00188 00189 #endif // _STELTEXTURE_HPP_