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// Copyright 2012 The Chromium Authors. All rights reserved.
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#include "cc/layers/picture_layer.h"
#include "cc/debug/devtools_instrumentation.h"
#include "cc/layers/picture_layer_impl.h"
#include "cc/trees/layer_tree_impl.h"
#include "ui/gfx/rect_conversions.h"
namespace cc {
scoped_refptr<PictureLayer> PictureLayer::Create(ContentLayerClient* client) {
return make_scoped_refptr(new PictureLayer(client));
}
PictureLayer::PictureLayer(ContentLayerClient* client)
: client_(client),
pile_(make_scoped_refptr(new PicturePile())),
instrumentation_object_tracker_(id()),
is_mask_(false) {
}
PictureLayer::~PictureLayer() {
}
bool PictureLayer::DrawsContent() const {
return Layer::DrawsContent() && client_;
}
scoped_ptr<LayerImpl> PictureLayer::CreateLayerImpl(LayerTreeImpl* tree_impl) {
return PictureLayerImpl::Create(tree_impl, id()).PassAs<LayerImpl>();
}
void PictureLayer::PushPropertiesTo(LayerImpl* base_layer) {
Layer::PushPropertiesTo(base_layer);
PictureLayerImpl* layer_impl = static_cast<PictureLayerImpl*>(base_layer);
layer_impl->SetIsMask(is_mask_);
layer_impl->CreateTilingSet();
layer_impl->invalidation_.Clear();
layer_impl->invalidation_.Swap(pile_invalidation_);
layer_impl->pile_ =
PicturePileImpl::CreateFromOther(pile_, layer_impl->is_using_lcd_text_);
layer_impl->SyncFromActiveLayer();
}
void PictureLayer::SetLayerTreeHost(LayerTreeHost* host) {
Layer::SetLayerTreeHost(host);
if (host) {
pile_->SetMinContentsScale(host->settings().minimum_contents_scale);
pile_->SetTileGridSize(host->settings().default_tile_size);
pile_->set_num_raster_threads(host->settings().num_raster_threads);
pile_->set_slow_down_raster_scale_factor(
host->debug_state().slow_down_raster_scale_factor);
}
}
void PictureLayer::SetNeedsDisplayRect(const gfx::RectF& layer_rect) {
gfx::Rect rect = gfx::ToEnclosedRect(layer_rect);
if (!rect.IsEmpty()) {
// Clamp invalidation to the layer bounds.
rect.Intersect(gfx::Rect(bounds()));
pending_invalidation_.Union(rect);
}
Layer::SetNeedsDisplayRect(layer_rect);
}
void PictureLayer::Update(ResourceUpdateQueue*,
const OcclusionTracker*,
RenderingStats* stats) {
// Do not early-out of this function so that PicturePile::Update has a chance
// to record pictures due to changing visibility of this layer.
pile_->Resize(bounds());
// Calling paint in WebKit can sometimes cause invalidations, so save
// off the invalidation prior to calling update.
pile_invalidation_.Swap(pending_invalidation_);
pending_invalidation_.Clear();
gfx::Rect visible_layer_rect = gfx::ToEnclosingRect(
gfx::ScaleRect(visible_content_rect(), 1.f / contents_scale_x()));
devtools_instrumentation::ScopedPaintLayer paint_layer(id());
pile_->Update(client_,
background_color(),
pile_invalidation_,
visible_layer_rect,
stats);
}
void PictureLayer::SetIsMask(bool is_mask) {
is_mask_ = is_mask;
}
} // namespace cc
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