Question

我正在使用Mako SDK和IJawsRenderer :: render（）渲染所有具有IDOMImageBrush填充的IDOMPathNodes。当我这样做时，渲染器将为某些节点（而非全部）抛出错误2000异常。可能是什么原因？

IDOMBrushPtr pBrush;
pPath->getFill(pBrush);
if (pBrush)
{
    IDOMBrush::eBrushType fillStyle = pBrush->getBrushType();
    switch (fillStyle)
    {
    case IDOMBrush::eImage:
    {
        IJawsRendererPtr renderer = IJawsRenderer::create(jawsMako);
        IDOMImagePtr renderedImage;
        renderedImage = renderer->render(pNode, 800); // This is where the exception will eventually happen.
        break;
    }
    default:
        break;
    }
}

Answer 1

可能是由于传递给渲染器的路径太小而引发异常。渲染器的下限为1pt x 1pt（或1.33 x 1.33 Mako单位）。修改代码以检查节点的边界框是否足够大，例如：

const double minimumRenderSize = 96.0 / 72.0;
...
IDOMBrushPtr pBrush;
pPath->getFill(pBrush);
FRect box;
pPath->getBounds(box);
box.dX = box.dX < minimumRenderSize ? minimumRenderSize : box.dX;
box.dY = box.dY < minimumRenderSize ? minimumRenderSize : box.dY;
if (pBrush)
{
    IDOMBrush::eBrushType fillStyle = pBrush->getBrushType();
    switch (fillStyle)
    {
    case IDOMBrush::eImage:
    {
        IJawsRendererPtr renderer = IJawsRenderer::create(jawsMako);
        IDOMImagePtr renderedImage;
        renderedImage = renderer->render(pNode, 800, IDOMColorSpacesRGB::create(jawsMako), box);
        break;
    }
    default:
        break;
    }
}

IJawsRenderer（）引发的异常

1 个答案: