sky/engine/bindings-dart/core/dart/custom/DartCanvasRenderingContext2DCustom.cpp

// Copyright 2011, Google Inc.
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#include "config.h"
#include "bindings/core/dart/DartCanvasRenderingContext2D.h"

#include "bindings/core/dart/DartCanvasGradient.h"
#include "bindings/core/dart/DartCanvasPattern.h"
#include "bindings/core/dart/DartDOMWrapper.h"
#include "core/html/canvas/CanvasRenderingContext2D.h"
#include "core/html/canvas/CanvasStyle.h"

namespace blink {

namespace DartCanvasRenderingContext2DInternal {

static void canvasStyleReturnToDartValue(Dart_NativeArguments args, CanvasStyle* style)
{
    if (style->canvasGradient()) {
        DartCanvasGradient::returnToDart(args, style->canvasGradient());
        return;
    }

    if (style->canvasPattern()) {
        DartCanvasPattern::returnToDart(args, style->canvasPattern());
        return;
    }

    DartUtilities::setDartStringReturnValue(args, style->color());
}

static PassRefPtr<CanvasStyle> toCanvasStyle(Dart_Handle value)
{
    Dart_Handle exception = 0;
    if (DartDOMWrapper::subtypeOf(value, DartCanvasGradient::dartClassId))
        return CanvasStyle::createFromGradient(DartCanvasGradient::toNativeWithNullCheck(value, exception));

    if (DartDOMWrapper::subtypeOf(value, DartCanvasPattern::dartClassId))
        return CanvasStyle::createFromPattern(DartCanvasPattern::toNativeWithNullCheck(value, exception));

    return nullptr;
}

void strokeStyleGetter(Dart_NativeArguments args )
{
    {
        CanvasRenderingContext2D* receiver = DartDOMWrapper::receiver<CanvasRenderingContext2D>(args);

        canvasStyleReturnToDartValue(args, receiver->strokeStyle());
        return;
    }
}

void strokeStyleSetter(Dart_NativeArguments args)
{
    Dart_Handle exception = 0;
    {
        CanvasRenderingContext2D* receiver = DartDOMWrapper::receiver<CanvasRenderingContext2D>(args);

        Dart_Handle arg = Dart_GetNativeArgument(args, 1);
        if (Dart_IsString(arg)) {
            DartStringAdapter color = DartUtilities::dartToString(args, 1, exception);
            if (exception)
                goto fail;

            receiver->setStrokeColor(color);
            return;
        }

        receiver->setStrokeStyle(toCanvasStyle(arg));
        return;
    }

fail:
    Dart_ThrowException(exception);
    ASSERT_NOT_REACHED();
}

void fillStyleGetter(Dart_NativeArguments args)
{
    {
        CanvasRenderingContext2D* receiver = DartDOMWrapper::receiver<CanvasRenderingContext2D>(args);

        canvasStyleReturnToDartValue(args, receiver->fillStyle());
        return;
    }
}

void fillStyleSetter(Dart_NativeArguments args)
{
    Dart_Handle exception = 0;
    {
        CanvasRenderingContext2D* receiver = DartDOMWrapper::receiver<CanvasRenderingContext2D>(args);

        Dart_Handle arg = Dart_GetNativeArgument(args, 1);
        if (Dart_IsString(arg)) {
            DartStringAdapter color = DartUtilities::dartToString(arg, exception);
            if (exception)
                goto fail;

            receiver->setFillColor(color);
            return;
        }

        receiver->setFillStyle(toCanvasStyle(arg));
        return;
    }

fail:
    Dart_ThrowException(exception);
    ASSERT_NOT_REACHED();
}

} // namespace DartCanvasRenderingContext2DInternal

} // namespace blink