1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
|
// 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);
// This should be first so others can use it.
layer_impl->UpdateTwinLayer();
layer_impl->SetIsMask(is_mask_);
layer_impl->CreateTilingSet();
// Unlike other properties, invalidation must always be set on layer_impl.
// See PictureLayerImpl::PushPropertiesTo for more details.
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);
pile_->set_show_debug_picture_borders(
host->debug_state().show_picture_borders);
}
}
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(paint_properties().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::ScaleToEnclosingRect(
visible_content_rect(), 1.f / contents_scale_x());
devtools_instrumentation::ScopedLayerTask paint_layer(
devtools_instrumentation::kPaintLayer, id());
pile_->Update(client_,
background_color(),
pile_invalidation_,
visible_layer_rect,
stats);
}
void PictureLayer::SetIsMask(bool is_mask) {
is_mask_ = is_mask;
}
bool PictureLayer::SupportsLCDText() const {
return true;
}
} // namespace cc
|
