当前位置: 首页>>代码示例>>C++>>正文

C++ CanvasRenderingContext2D类代码示例

本文整理汇总了C++中CanvasRenderingContext2D类的典型用法代码示例。如果您正苦于以下问题：C++ CanvasRenderingContext2D类的具体用法？C++ CanvasRenderingContext2D怎么用？C++ CanvasRenderingContext2D使用的例子？那么, 这里精选的类代码示例或许可以为您提供帮助。


在下文中一共展示了CanvasRenderingContext2D类的15个代码示例，这些例子默认根据受欢迎程度排序。您可以为喜欢或者感觉有用的代码点赞，您的评价将有助于系统推荐出更棒的C++代码示例。

示例1: impl

JSValue* JSCanvasRenderingContext2D::createPattern(ExecState* exec, const ArgList& args)
{ 
    CanvasRenderingContext2D* context = impl();

    JSValue* value = args[0];
    if (!value->isObject())
        return throwError(exec, TypeError);
    JSObject* o = static_cast<JSObject*>(value);

    if (o->inherits(&JSHTMLImageElement::s_info)) {
        ExceptionCode ec;
        JSValue* pattern = toJS(exec,
            context->createPattern(static_cast<HTMLImageElement*>(static_cast<JSHTMLElement*>(args[0])->impl()),
                                   valueToStringWithNullCheck(exec, args[1]), ec).get());
        setDOMException(exec, ec);
        return pattern;
    }
    if (o->inherits(&JSHTMLCanvasElement::s_info)) {
        ExceptionCode ec;
        JSValue* pattern = toJS(exec,
            context->createPattern(static_cast<HTMLCanvasElement*>(static_cast<JSHTMLElement*>(args[0])->impl()),
                valueToStringWithNullCheck(exec, args[1]), ec).get());
        setDOMException(exec, ec);
        return pattern;
    }
    setDOMException(exec, TYPE_MISMATCH_ERR);
    return 0;
}
开发者ID:Chingliu，项目名称:EAWebkit，代码行数:28，代码来源:JSCanvasRenderingContext2DCustom.cpp

示例2: INC_STATS

v8::Handle<v8::Value> V8CanvasRenderingContext2D::createPatternCallback(const v8::Arguments& args)
{
    INC_STATS("DOM.CanvasRenderingContext2D.createPattern()");
    CanvasRenderingContext2D* context = V8CanvasRenderingContext2D::toNative(args.Holder());

    v8::Handle<v8::Value> arg = args[0];

    if (V8HTMLImageElement::HasInstance(arg)) {
        HTMLImageElement* imageElement = V8HTMLImageElement::toNative(v8::Handle<v8::Object>::Cast(arg));
        ExceptionCode ec = 0;
        RefPtr<CanvasPattern> pattern = context->createPattern(imageElement, toWebCoreStringWithNullCheck(args[1]), ec);
        if (ec != 0) {
            V8Proxy::setDOMException(ec);
            return notHandledByInterceptor();
        }
        return toV8(pattern.release());
    }

    if (V8HTMLCanvasElement::HasInstance(arg)) {
        HTMLCanvasElement* canvasElement = V8HTMLCanvasElement::toNative(v8::Handle<v8::Object>::Cast(arg));
        ExceptionCode ec = 0;
        RefPtr<CanvasPattern> pattern = context->createPattern(canvasElement, toWebCoreStringWithNullCheck(args[1]), ec);
        if (ec != 0) {
            V8Proxy::setDOMException(ec);
            return notHandledByInterceptor();
        }
        return toV8(pattern.release());
    }

    V8Proxy::setDOMException(TYPE_MISMATCH_ERR);
    return notHandledByInterceptor();
}
开发者ID:mikezit，项目名称:Webkit_Code，代码行数:32，代码来源:V8CanvasRenderingContext2DCustom.cpp

示例3: 

void V8CanvasRenderingContext2D::fillStyleAttrSetterCustom(v8::Local<v8::String> name, v8::Local<v8::Value> value, const v8::AccessorInfo& info)
{
    CanvasRenderingContext2D* impl = V8CanvasRenderingContext2D::toNative(info.Holder());
    if (value->IsString())
        impl->setFillColor(toWebCoreString(value));
    else
        impl->setFillStyle(toCanvasStyle(value, info.GetIsolate()));
}
开发者ID:Channely，项目名称:know-your-chrome，代码行数:8，代码来源:V8CanvasRenderingContext2DCustom.cpp

示例4: attach

void HTMLCanvasElement::attach()
{
    HTMLElement::attach();

    if (m_context && m_context->is2d()) {
        CanvasRenderingContext2D* ctx = static_cast<CanvasRenderingContext2D*>(m_context.get());
        ctx->updateFont();
    }
}
开发者ID:NewDreamUser2，项目名称:webkit-webcl，代码行数:9，代码来源:HTMLCanvasElement.cpp

示例5: 

void JSCanvasRenderingContext2D::setFillStyle(ExecState* exec, JSValue value)
{
    CanvasRenderingContext2D* context = static_cast<CanvasRenderingContext2D*>(impl());
    if (value.isString()) {
        context->setFillColor(asString(value)->value(exec));
        return;
    }
    context->setFillStyle(toHTMLCanvasStyle(exec, value));
}
开发者ID:SchleunigerAG，项目名称:WinEC7_Qt5.3.1_Fixes，代码行数:9，代码来源:JSCanvasRenderingContext2DCustom.cpp

示例6: 

void V8CanvasRenderingContext2D::fillStyleAttributeSetterCustom(v8::Local<v8::Value> value, const v8::PropertyCallbackInfo<void>& info)
{
    CanvasRenderingContext2D* impl = V8CanvasRenderingContext2D::toNative(info.Holder());
    if (RefPtr<CanvasStyle> canvasStyle = toCanvasStyle(value, info.GetIsolate())) {
        impl->setFillStyle(canvasStyle);
    } else {
        TOSTRING_VOID(V8StringResource<>, colorString, value);
        impl->setFillColor(colorString);
    }
}
开发者ID:coinpayee，项目名称:blink，代码行数:10，代码来源:V8CanvasRenderingContext2DCustom.cpp

示例7: jsCanvasRenderingContext2DPrototypeFunctionClearShadow

JSValue* jsCanvasRenderingContext2DPrototypeFunctionClearShadow(ExecState* exec, JSObject*, JSValue* thisValue, const ArgList& args)
{
    if (!thisValue->isObject(&JSCanvasRenderingContext2D::s_info))
        return throwError(exec, TypeError);
    JSCanvasRenderingContext2D* castedThisObj = static_cast<JSCanvasRenderingContext2D*>(thisValue);
    CanvasRenderingContext2D* imp = static_cast<CanvasRenderingContext2D*>(castedThisObj->impl());

    imp->clearShadow();
    return jsUndefined();
}
开发者ID:lentinic，项目名称:EAWebKit，代码行数:10，代码来源:JSCanvasRenderingContext2D.cpp

示例8: recalcStyle

void HTMLCanvasElement::recalcStyle(StyleChange change)
{
    HTMLElement::recalcStyle(change);

    // Update font if needed.
    if (change == Force && m_context && m_context->is2d()) {
        CanvasRenderingContext2D* ctx = static_cast<CanvasRenderingContext2D*>(m_context.get());
        ctx->updateFont();
    }
}
开发者ID:NewDreamUser2，项目名称:webkit-webcl，代码行数:10，代码来源:HTMLCanvasElement.cpp

示例9: jsCanvasRenderingContext2DPrototypeFunctionSetLineJoin

JSValue* jsCanvasRenderingContext2DPrototypeFunctionSetLineJoin(ExecState* exec, JSObject*, JSValue* thisValue, const ArgList& args)
{
    if (!thisValue->isObject(&JSCanvasRenderingContext2D::s_info))
        return throwError(exec, TypeError);
    JSCanvasRenderingContext2D* castedThisObj = static_cast<JSCanvasRenderingContext2D*>(thisValue);
    CanvasRenderingContext2D* imp = static_cast<CanvasRenderingContext2D*>(castedThisObj->impl());
    const UString& join = args[0]->toString(exec);

    imp->setLineJoin(join);
    return jsUndefined();
}
开发者ID:lentinic，项目名称:EAWebKit，代码行数:11，代码来源:JSCanvasRenderingContext2D.cpp

示例10: jsCanvasRenderingContext2DPrototypeFunctionSetMiterLimit

JSValue* jsCanvasRenderingContext2DPrototypeFunctionSetMiterLimit(ExecState* exec, JSObject*, JSValue* thisValue, const ArgList& args)
{
    if (!thisValue->isObject(&JSCanvasRenderingContext2D::s_info))
        return throwError(exec, TypeError);
    JSCanvasRenderingContext2D* castedThisObj = static_cast<JSCanvasRenderingContext2D*>(thisValue);
    CanvasRenderingContext2D* imp = static_cast<CanvasRenderingContext2D*>(castedThisObj->impl());
    float limit = args[0]->toFloat(exec);

    imp->setMiterLimit(limit);
    return jsUndefined();
}
开发者ID:lentinic，项目名称:EAWebKit，代码行数:11，代码来源:JSCanvasRenderingContext2D.cpp

示例11: constructArray

JSValue JSCanvasRenderingContext2D::webkitLineDash(ExecState* exec) const
{
    CanvasRenderingContext2D* context = static_cast<CanvasRenderingContext2D*>(impl());
    const Vector<float>& dash = context->getLineDash();

    MarkedArgumentBuffer list;
    Vector<float>::const_iterator end = dash.end();
    for (Vector<float>::const_iterator it = dash.begin(); it != end; ++it)
        list.append(JSValue(*it));
    return constructArray(exec, 0, globalObject(), list);
}
开发者ID:SchleunigerAG，项目名称:WinEC7_Qt5.3.1_Fixes，代码行数:11，代码来源:JSCanvasRenderingContext2DCustom.cpp

示例12: impl

JSValue JSCanvasRenderingContext2D::strokeRect(ExecState* exec, const ArgList& args)
{ 
    CanvasRenderingContext2D* context = impl();
    
    if (args.size() <= 4)
        context->strokeRect(args.at(0).toFloat(exec), args.at(1).toFloat(exec),
                            args.at(2).toFloat(exec), args.at(3).toFloat(exec));
    else
        context->strokeRect(args.at(0).toFloat(exec), args.at(1).toFloat(exec),
                            args.at(2).toFloat(exec), args.at(3).toFloat(exec), args.at(4).toFloat(exec));

    return jsUndefined();    
}
开发者ID:boyliang，项目名称:ComponentSuperAccessor，代码行数:13，代码来源:JSCanvasRenderingContext2DCustom.cpp

示例13: jsCanvasRenderingContext2DPrototypeFunctionCreateImageData

JSValue* jsCanvasRenderingContext2DPrototypeFunctionCreateImageData(ExecState* exec, JSObject*, JSValue* thisValue, const ArgList& args)
{
    if (!thisValue->isObject(&JSCanvasRenderingContext2D::s_info))
        return throwError(exec, TypeError);
    JSCanvasRenderingContext2D* castedThisObj = static_cast<JSCanvasRenderingContext2D*>(thisValue);
    CanvasRenderingContext2D* imp = static_cast<CanvasRenderingContext2D*>(castedThisObj->impl());
    float sw = args[0]->toFloat(exec);
    float sh = args[1]->toFloat(exec);


    KJS::JSValue* result = toJS(exec, WTF::getPtr(imp->createImageData(sw, sh)));
    return result;
}
开发者ID:lentinic，项目名称:EAWebKit，代码行数:13，代码来源:JSCanvasRenderingContext2D.cpp

示例14: jsCanvasRenderingContext2DPrototypeFunctionIsPointInPath

JSValue* jsCanvasRenderingContext2DPrototypeFunctionIsPointInPath(ExecState* exec, JSObject*, JSValue* thisValue, const ArgList& args)
{
    if (!thisValue->isObject(&JSCanvasRenderingContext2D::s_info))
        return throwError(exec, TypeError);
    JSCanvasRenderingContext2D* castedThisObj = static_cast<JSCanvasRenderingContext2D*>(thisValue);
    CanvasRenderingContext2D* imp = static_cast<CanvasRenderingContext2D*>(castedThisObj->impl());
    float x = args[0]->toFloat(exec);
    float y = args[1]->toFloat(exec);


    KJS::JSValue* result = jsBoolean(imp->isPointInPath(x, y));
    return result;
}
开发者ID:lentinic，项目名称:EAWebKit，代码行数:13，代码来源:JSCanvasRenderingContext2D.cpp

示例15: jsCanvasRenderingContext2DPrototypeFunctionRect

JSValue* jsCanvasRenderingContext2DPrototypeFunctionRect(ExecState* exec, JSObject*, JSValue* thisValue, const ArgList& args)
{
    if (!thisValue->isObject(&JSCanvasRenderingContext2D::s_info))
        return throwError(exec, TypeError);
    JSCanvasRenderingContext2D* castedThisObj = static_cast<JSCanvasRenderingContext2D*>(thisValue);
    CanvasRenderingContext2D* imp = static_cast<CanvasRenderingContext2D*>(castedThisObj->impl());
    float x = args[0]->toFloat(exec);
    float y = args[1]->toFloat(exec);
    float width = args[2]->toFloat(exec);
    float height = args[3]->toFloat(exec);

    imp->rect(x, y, width, height);
    return jsUndefined();
}
开发者ID:lentinic，项目名称:EAWebKit，代码行数:14，代码来源:JSCanvasRenderingContext2D.cpp


注：本文中的CanvasRenderingContext2D类示例由纯净天空整理自Github/MSDocs等开源代码及文档管理平台，相关代码片段筛选自各路编程大神贡献的开源项目，源码版权归原作者所有，传播和使用请参考对应项目的License；未经允许，请勿转载。