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Fix Mozart blends of child views (flutter/engine#3248)

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We need to compute the paint bounds of ChildViewLayers during Preroll.
Also, we need to allocate a BlendPtr before writing into it.
This commit is contained in:
Adam Barth 2016-11-18 23:49:30 -08:00 committed by GitHub
parent 3a1caa55b3
commit 85abbfaa3e
2 changed files with 8 additions and 0 deletions
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7
engine/src/flutter/flow/layers/child_scene_layer.cc
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@ -19,6 +19,13 @@ void ChildSceneLayer::Preroll(PrerollContext* context, const SkMatrix& matrix) {
transform_.preTranslate(offset_.x(), offset_.y());
float inverse_device_pixel_ratio = 1.f / device_pixel_ratio_;
transform_.preScale(inverse_device_pixel_ratio, inverse_device_pixel_ratio);
SkRect bounds = SkRect::MakeXYWH(
offset_.x(), offset_.y(),
physical_size_.width() * inverse_device_pixel_ratio,
physical_size_.height() * inverse_device_pixel_ratio);
set_paint_bounds(bounds);
context->child_paint_bounds = bounds;
}
void ChildSceneLayer::Paint(PaintContext& context) {

1
engine/src/flutter/flow/layers/opacity_layer.cc
View File

@ -23,6 +23,7 @@ void OpacityLayer::UpdateScene(SceneUpdateContext& context,
node->op = mozart::NodeOp::New();
node->op->set_layer(mozart::LayerNodeOp::New());
node->op->get_layer()->layer_rect = mozart::RectF::From(paint_bounds());
node->op->get_layer()->blend = mozart::Blend::New();
node->op->get_layer()->blend->alpha = alpha_;
UpdateSceneChildrenInsideNode(context, container, std::move(node));
}