C:/sources/c++/buddhabrot/buddhabrot/scriptedcolormaker.cpp

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00001 /*
00002 Copyright 2010 Pierre SCHWARTZ
00003 
00004 Permission is hereby granted, free of charge, to any person obtaining a copy of this software and associated 
00005 documentation files (the "Software"), to deal in the Software without restriction, including without 
00006 limitation the rights to use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies 
00007 of the Software, and to permit persons to whom the Software is furnished to do so, subject to the following 
00008 conditions: The above copyright notice and this permission notice shall be included in all copies or 
00009 substantial portions of the Software. THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, 
00010 EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR 
00011 PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, 
00012 DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF 
00013 OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. 
00014 */
00015 
00023 #include "scriptedcolormaker.h"
00024 
00025 scriptedColorMaker::scriptedColorMaker(int nbColors, QString paletteName):colorMaker(nbColors){
00026         QString name("data/palettes/");
00027         name.append(paletteName);
00028         name.append(".js");
00029 
00030     evaluatedFile = evaluateFile(engine, name);
00031         scriptedFunction = evaluatedFile.property("compute");
00032 
00033         QScriptValue constructor = evaluatedFile.property("init");
00034         constructor.call(evaluatedFile,QScriptValueList() << nblevels);
00035 }
00036 
00037 scriptedColorMaker::~scriptedColorMaker(){
00038 }
00039 
00043 QColor scriptedColorMaker::get(int level){
00044         long result = scriptedFunction.call(evaluatedFile,QScriptValueList() << level << nblevels).toNumber();
00045         
00046         unsigned char r = result >> 16;
00047         unsigned char g = (result-(r << 16)) >> 8;
00048         unsigned char b = result-(r<<16) - (g<<8);
00049 
00050         return QColor(r, g, b);
00051 }
00052 
00056 QScriptValue scriptedColorMaker::evaluateFile(QScriptEngine &engine, QString const &filename){
00057     QFile file(filename);
00058     file.open(QIODevice::ReadOnly);
00059 
00060     return engine.evaluate(file.readAll(),filename);
00061 }

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