qtscript

[wookoon]

Hello everyone,

Now I want do a formula editor with qt,which provide an interface to user to edit there own formula by

qtscript. So it needs some base functions just like add,subtract and so on.

I want write these functions in a javascript file, and then invoke this file in my qtscript text. But I try some

ways to invoke that file,it is not effective.

Anyone can give me some suggestions?

[wookoon]

no one reply me.
I tell a way I just hava try.

function include_js(path,reload)  
{  
    var scripts = document.getElementsByTagName("script");  
    if (!reload)  
        for (var i=0;i < scripts.length;i++)  
            if (scripts[i].src && scripts[i].src.toLowerCase() == path.toLowerCase() ) return;  
    var sobj = document.createElement('script');  
    sobj.type = "text/javascript";  
    sobj.src = path;  
    var headobj = document.getElementsByTagName('head')[0];  
    headobj.appendChild(sobj);  
}
 
include_js("test.js",0);

function include_js(path,reload)  
{  
    var scripts = document.getElementsByTagName("script");  
    if (!reload)  
        for (var i=0;i < scripts.length;i++)  
            if (scripts[i].src && scripts[i].src.toLowerCase() == path.toLowerCase() ) return;  
    var sobj = document.createElement('script');  
    sobj.type = "text/javascript";  
    sobj.src = path;  
    var headobj = document.getElementsByTagName('head')[0];  
    headobj.appendChild(sobj);  
}

include_js("test.js",0);

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but this is the warning: Can't find variable: document. ..

[squidge]

Correct. QtScript doesn't have document variable. Its not running from within a html page, so there is none.

Please check the QtScript examples directory.

[wookoon]

Correct. QtScript doesn't have document variable. Its not running from within a html page, so there is none.

Please check the QtScript examples directory.

yes,I know,but in my script,I need use "test.js" this file.

so is there any ways to do?

[FFox]

Mhm why not use the build in functionality.

I did something like this:

QScriptEngine engine;
for (int x=0; x<size_x ; x++)
{
	engine.globalObject().setProperty("x",x);
	double value=engine.evaluate(QString("with (Math) {")
                                +mUi.mpLineEditParserFunctionString>text()
                                +QString("}")).toNumber();
        my_function->SetValuel(x,value);
}

QScriptEngine engine;
for (int x=0; x<size_x ; x++)
{
	engine.globalObject().setProperty("x",x);
	double value=engine.evaluate(QString("with (Math) {")
                                +mUi.mpLineEditParserFunctionString>text()
                                +QString("}")).toNumber();
        my_function->SetValuel(x,value);
}

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then people can type their formulas into the lineedit like x*sin(x)*exp(-x*x)