本文整理汇总了C++中Layer::GetLocalClipRect方法的典型用法代码示例。如果您正苦于以下问题:C++ Layer::GetLocalClipRect方法的具体用法?C++ Layer::GetLocalClipRect怎么用?C++ Layer::GetLocalClipRect使用的例子?那么, 这里精选的方法代码示例或许可以为您提供帮助。您也可以进一步了解该方法所在类Layer
的用法示例。
在下文中一共展示了Layer::GetLocalClipRect方法的1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: transformOffset
static Layer*
FindBackgroundLayer(ReadbackLayer* aLayer, nsIntPoint* aOffset)
{
gfx::Matrix transform;
if (!aLayer->GetTransform().Is2D(&transform) ||
transform.HasNonIntegerTranslation())
return nullptr;
nsIntPoint transformOffset(int32_t(transform._31), int32_t(transform._32));
for (Layer* l = aLayer->GetPrevSibling(); l; l = l->GetPrevSibling()) {
gfx::Matrix backgroundTransform;
if (!l->GetTransform().Is2D(&backgroundTransform) ||
gfx::ThebesMatrix(backgroundTransform).HasNonIntegerTranslation())
return nullptr;
nsIntPoint backgroundOffset(int32_t(backgroundTransform._31), int32_t(backgroundTransform._32));
IntRect rectInBackground(transformOffset - backgroundOffset, aLayer->GetSize());
const nsIntRegion visibleRegion = l->GetLocalVisibleRegion().ToUnknownRegion();
if (!visibleRegion.Intersects(rectInBackground))
continue;
// Since l is present in the background, from here on we either choose l
// or nothing.
if (!visibleRegion.Contains(rectInBackground))
return nullptr;
if (l->GetEffectiveOpacity() != 1.0 ||
l->HasMaskLayers() ||
!(l->GetContentFlags() & Layer::CONTENT_OPAQUE))
{
return nullptr;
}
// cliprects are post-transform
const Maybe<ParentLayerIntRect>& clipRect = l->GetLocalClipRect();
if (clipRect && !clipRect->Contains(ViewAs<ParentLayerPixel>(IntRect(transformOffset, aLayer->GetSize()))))
return nullptr;
Layer::LayerType type = l->GetType();
if (type != Layer::TYPE_COLOR && type != Layer::TYPE_PAINTED)
return nullptr;
*aOffset = backgroundOffset - transformOffset;
return l;
}
return nullptr;
}