示例#1
0
JSValue JSDocument::getCSSCanvasContext(JSC::ExecState& state)
{
    VM& vm = state.vm();
    auto scope = DECLARE_THROW_SCOPE(vm);

    if (UNLIKELY(state.argumentCount() < 4))
        return throwException(&state, scope, createNotEnoughArgumentsError(&state));
    auto contextId = state.uncheckedArgument(0).toWTFString(&state);
    if (UNLIKELY(state.hadException()))
        return jsUndefined();
    auto name = state.uncheckedArgument(1).toWTFString(&state);
    if (UNLIKELY(state.hadException()))
        return jsUndefined();
    auto width = convert<int32_t>(state, state.uncheckedArgument(2), NormalConversion);
    if (UNLIKELY(state.hadException()))
        return jsUndefined();
    auto height = convert<int32_t>(state, state.uncheckedArgument(3), NormalConversion);
    if (UNLIKELY(state.hadException()))
        return jsUndefined();

    auto* context = wrapped().getCSSCanvasContext(WTFMove(contextId), WTFMove(name), WTFMove(width), WTFMove(height));
    if (!context)
        return jsNull();

#if ENABLE(WEBGL)
    if (is<WebGLRenderingContextBase>(*context))
        return toJS(&state, globalObject(), downcast<WebGLRenderingContextBase>(*context));
#endif

    return toJS(&state, globalObject(), downcast<CanvasRenderingContext2D>(*context));
}
static JSC::JSValue dataFunctioni(DataFunctionToCall f, JSC::ExecState& state, WebGLRenderingContextBase& context)
{
    if (state.argumentCount() != 2)
        return state.vm().throwException(&state, createNotEnoughArgumentsError(&state));
    
    WebGLUniformLocation* location = JSWebGLUniformLocation::toWrapped(state.uncheckedArgument(0));
    if (!location && !state.uncheckedArgument(0).isUndefinedOrNull())
        return throwTypeError(&state);
    
    RefPtr<Int32Array> webGLArray = toInt32Array(state.uncheckedArgument(1));
    
    ExceptionCode ec = 0;
    if (webGLArray) {
        switch (f) {
        case f_uniform1v:
            context.uniform1iv(location, *webGLArray, ec);
            break;
        case f_uniform2v:
            context.uniform2iv(location, *webGLArray, ec);
            break;
        case f_uniform3v:
            context.uniform3iv(location, *webGLArray, ec);
            break;
        case f_uniform4v:
            context.uniform4iv(location, *webGLArray, ec);
            break;
        default:
            break;
        }
        
        setDOMException(&state, ec);
        return jsUndefined();
    }
    
    
    Vector<int, 64> array;
    if (!toVector(state, state.uncheckedArgument(1), array))
        return throwTypeError(&state);
    
    switch (f) {
    case f_uniform1v:
        context.uniform1iv(location, array.data(), array.size(), ec);
        break;
    case f_uniform2v:
        context.uniform2iv(location, array.data(), array.size(), ec);
        break;
    case f_uniform3v:
        context.uniform3iv(location, array.data(), array.size(), ec);
        break;
    case f_uniform4v:
        context.uniform4iv(location, array.data(), array.size(), ec);
        break;
    default:
        break;
    }
    
    setDOMException(&state, ec);
    return jsUndefined();
}
static JSC::JSValue dataFunctionMatrix(DataFunctionMatrixToCall f, JSC::ExecState& state, WebGLRenderingContextBase& context)
{
    if (state.argumentCount() != 3)
        return state.vm().throwException(&state, createNotEnoughArgumentsError(&state));
    
    WebGLUniformLocation* location = JSWebGLUniformLocation::toWrapped(state.uncheckedArgument(0));
    if (!location && !state.uncheckedArgument(0).isUndefinedOrNull())
        return throwTypeError(&state);
    
    bool transpose = state.uncheckedArgument(1).toBoolean(&state);
    if (state.hadException())
        return jsUndefined();
    
    RefPtr<Float32Array> webGLArray = toFloat32Array(state.uncheckedArgument(2));
    
    ExceptionCode ec = 0;
    if (webGLArray) {
        switch (f) {
        case f_uniformMatrix2fv:
            context.uniformMatrix2fv(location, transpose, *webGLArray, ec);
            break;
        case f_uniformMatrix3fv:
            context.uniformMatrix3fv(location, transpose, *webGLArray, ec);
            break;
        case f_uniformMatrix4fv:
            context.uniformMatrix4fv(location, transpose, *webGLArray, ec);
            break;
        }
        
        setDOMException(&state, ec);
        return jsUndefined();
    }
    
    Vector<float, 64> array;
    if (!toVector(state, state.uncheckedArgument(2), array))
        return throwTypeError(&state);
    
    switch (f) {
    case f_uniformMatrix2fv:
        context.uniformMatrix2fv(location, transpose, array.data(), array.size(), ec);
        break;
    case f_uniformMatrix3fv:
        context.uniformMatrix3fv(location, transpose, array.data(), array.size(), ec);
        break;
    case f_uniformMatrix4fv:
        context.uniformMatrix4fv(location, transpose, array.data(), array.size(), ec);
        break;
    }
    
    setDOMException(&state, ec);
    return jsUndefined();
}
static JSC::JSValue dataFunctionf(DataFunctionToCall f, JSC::ExecState& state, WebGLRenderingContextBase& context)
{
    if (state.argumentCount() != 2)
        return state.vm().throwException(&state, createNotEnoughArgumentsError(&state));
    
    WebGLUniformLocation* location = 0;
    long index = -1;
    
    if (functionForUniform(f)) {
        location = JSWebGLUniformLocation::toWrapped(state.uncheckedArgument(0));
        if (!location && !state.uncheckedArgument(0).isUndefinedOrNull())
            return throwTypeError(&state);
    } else
        index = state.uncheckedArgument(0).toInt32(&state);
    
    if (state.hadException())
        return jsUndefined();
    
    RefPtr<Float32Array> webGLArray = toFloat32Array(state.uncheckedArgument(1));
    if (state.hadException())
        return jsUndefined();
    
    ExceptionCode ec = 0;
    if (webGLArray) {
        switch (f) {
        case f_uniform1v:
            context.uniform1fv(location, *webGLArray, ec);
            break;
        case f_uniform2v:
            context.uniform2fv(location, *webGLArray, ec);
            break;
        case f_uniform3v:
            context.uniform3fv(location, *webGLArray, ec);
            break;
        case f_uniform4v:
            context.uniform4fv(location, *webGLArray, ec);
            break;
        case f_vertexAttrib1v:
            context.vertexAttrib1fv(index, *webGLArray);
            break;
        case f_vertexAttrib2v:
            context.vertexAttrib2fv(index, *webGLArray);
            break;
        case f_vertexAttrib3v:
            context.vertexAttrib3fv(index, *webGLArray);
            break;
        case f_vertexAttrib4v:
            context.vertexAttrib4fv(index, *webGLArray);
            break;
        }
        
        setDOMException(&state, ec);
        return jsUndefined();
    }
    
    Vector<float, 64> array;
    if (!toVector(state, state.uncheckedArgument(1), array))
        return throwTypeError(&state);
    
    switch (f) {
    case f_uniform1v:
        context.uniform1fv(location, array.data(), array.size(), ec);
        break;
    case f_uniform2v:
        context.uniform2fv(location, array.data(), array.size(), ec);
        break;
    case f_uniform3v:
        context.uniform3fv(location, array.data(), array.size(), ec);
        break;
    case f_uniform4v:
        context.uniform4fv(location, array.data(), array.size(), ec);
        break;
    case f_vertexAttrib1v:
        context.vertexAttrib1fv(index, array.data(), array.size());
        break;
    case f_vertexAttrib2v:
        context.vertexAttrib2fv(index, array.data(), array.size());
        break;
    case f_vertexAttrib3v:
        context.vertexAttrib3fv(index, array.data(), array.size());
        break;
    case f_vertexAttrib4v:
        context.vertexAttrib4fv(index, array.data(), array.size());
        break;
    }
    
    setDOMException(&state, ec);
    return jsUndefined();
}