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| 1 // Copyright 2010 The Chromium Authors. All rights reserved. | |
| 2 // Use of this source code is governed by a BSD-style license that can be | |
| 3 // found in the LICENSE file. | |
| 4 | |
| 5 #include "cc/layers/layer.h" | |
| 6 | |
| 7 #include <algorithm> | |
| 8 | |
| 9 #include "base/atomic_sequence_num.h" | |
| 10 #include "base/location.h" | |
| 11 #include "base/metrics/histogram.h" | |
| 12 #include "base/single_thread_task_runner.h" | |
| 13 #include "base/time/time.h" | |
| 14 #include "base/trace_event/trace_event.h" | |
| 15 #include "cc/animation/animation.h" | |
| 16 #include "cc/animation/animation_events.h" | |
| 17 #include "cc/animation/animation_registrar.h" | |
| 18 #include "cc/animation/keyframed_animation_curve.h" | |
| 19 #include "cc/animation/layer_animation_controller.h" | |
| 20 #include "cc/base/simple_enclosed_region.h" | |
| 21 #include "cc/debug/frame_viewer_instrumentation.h" | |
| 22 #include "cc/layers/layer_client.h" | |
| 23 #include "cc/layers/layer_impl.h" | |
| 24 #include "cc/layers/scrollbar_layer_interface.h" | |
| 25 #include "cc/output/copy_output_request.h" | |
| 26 #include "cc/output/copy_output_result.h" | |
| 27 #include "cc/trees/layer_tree_host.h" | |
| 28 #include "cc/trees/layer_tree_impl.h" | |
| 29 #include "third_party/skia/include/core/SkImageFilter.h" | |
| 30 #include "ui/gfx/geometry/rect_conversions.h" | |
| 31 #include "ui/gfx/geometry/vector2d_conversions.h" | |
| 32 | |
| 33 namespace cc { | |
| 34 | |
| 35 base::StaticAtomicSequenceNumber g_next_layer_id; | |
| 36 | |
| 37 scoped_refptr<Layer> Layer::Create() { | |
| 38 return make_scoped_refptr(new Layer()); | |
| 39 } | |
| 40 | |
| 41 Layer::Layer() | |
| 42 : needs_push_properties_(false), | |
| 43 num_dependents_need_push_properties_(false), | |
| 44 stacking_order_changed_(false), | |
| 45 // Layer IDs start from 1. | |
| 46 layer_id_(g_next_layer_id.GetNext() + 1), | |
| 47 ignore_set_needs_commit_(false), | |
| 48 sorting_context_id_(0), | |
| 49 parent_(nullptr), | |
| 50 layer_tree_host_(nullptr), | |
| 51 scroll_clip_layer_id_(INVALID_ID), | |
| 52 num_descendants_that_draw_content_(0), | |
| 53 transform_tree_index_(-1), | |
| 54 opacity_tree_index_(-1), | |
| 55 clip_tree_index_(-1), | |
| 56 should_flatten_transform_from_property_tree_(false), | |
| 57 should_scroll_on_main_thread_(false), | |
| 58 have_wheel_event_handlers_(false), | |
| 59 have_scroll_event_handlers_(false), | |
| 60 user_scrollable_horizontal_(true), | |
| 61 user_scrollable_vertical_(true), | |
| 62 is_root_for_isolated_group_(false), | |
| 63 is_container_for_fixed_position_layers_(false), | |
| 64 is_drawable_(false), | |
| 65 draws_content_(false), | |
| 66 hide_layer_and_subtree_(false), | |
| 67 masks_to_bounds_(false), | |
| 68 contents_opaque_(false), | |
| 69 double_sided_(true), | |
| 70 should_flatten_transform_(true), | |
| 71 use_parent_backface_visibility_(false), | |
| 72 draw_checkerboard_for_missing_tiles_(false), | |
| 73 force_render_surface_(false), | |
| 74 transform_is_invertible_(true), | |
| 75 has_render_surface_(false), | |
| 76 scroll_blocks_on_(SCROLL_BLOCKS_ON_NONE), | |
| 77 background_color_(0), | |
| 78 opacity_(1.f), | |
| 79 blend_mode_(SkXfermode::kSrcOver_Mode), | |
| 80 scroll_parent_(nullptr), | |
| 81 clip_parent_(nullptr), | |
| 82 replica_layer_(nullptr), | |
| 83 raster_scale_(0.f), | |
| 84 client_(nullptr), | |
| 85 frame_timing_requests_dirty_(false) { | |
| 86 layer_animation_controller_ = LayerAnimationController::Create(layer_id_); | |
| 87 layer_animation_controller_->AddValueObserver(this); | |
| 88 layer_animation_controller_->set_value_provider(this); | |
| 89 } | |
| 90 | |
| 91 Layer::~Layer() { | |
| 92 // Our parent should be holding a reference to us so there should be no | |
| 93 // way for us to be destroyed while we still have a parent. | |
| 94 DCHECK(!parent()); | |
| 95 // Similarly we shouldn't have a layer tree host since it also keeps a | |
| 96 // reference to us. | |
| 97 DCHECK(!layer_tree_host()); | |
| 98 | |
| 99 layer_animation_controller_->RemoveValueObserver(this); | |
| 100 layer_animation_controller_->remove_value_provider(this); | |
| 101 | |
| 102 RemoveFromScrollTree(); | |
| 103 RemoveFromClipTree(); | |
| 104 | |
| 105 // Remove the parent reference from all children and dependents. | |
| 106 RemoveAllChildren(); | |
| 107 if (mask_layer_.get()) { | |
| 108 DCHECK_EQ(this, mask_layer_->parent()); | |
| 109 mask_layer_->RemoveFromParent(); | |
| 110 } | |
| 111 if (replica_layer_.get()) { | |
| 112 DCHECK_EQ(this, replica_layer_->parent()); | |
| 113 replica_layer_->RemoveFromParent(); | |
| 114 } | |
| 115 } | |
| 116 | |
| 117 void Layer::SetLayerTreeHost(LayerTreeHost* host) { | |
| 118 if (layer_tree_host_ == host) | |
| 119 return; | |
| 120 | |
| 121 layer_tree_host_ = host; | |
| 122 | |
| 123 // When changing hosts, the layer needs to commit its properties to the impl | |
| 124 // side for the new host. | |
| 125 SetNeedsPushProperties(); | |
| 126 | |
| 127 for (size_t i = 0; i < children_.size(); ++i) | |
| 128 children_[i]->SetLayerTreeHost(host); | |
| 129 | |
| 130 if (mask_layer_.get()) | |
| 131 mask_layer_->SetLayerTreeHost(host); | |
| 132 if (replica_layer_.get()) | |
| 133 replica_layer_->SetLayerTreeHost(host); | |
| 134 | |
| 135 if (host) { | |
| 136 layer_animation_controller_->SetAnimationRegistrar( | |
| 137 host->animation_registrar()); | |
| 138 | |
| 139 if (host->settings().layer_transforms_should_scale_layer_contents) | |
| 140 reset_raster_scale_to_unknown(); | |
| 141 } | |
| 142 | |
| 143 if (host && layer_animation_controller_->has_any_animation()) | |
| 144 host->SetNeedsCommit(); | |
| 145 } | |
| 146 | |
| 147 void Layer::SetNeedsUpdate() { | |
| 148 if (layer_tree_host_ && !ignore_set_needs_commit_) | |
| 149 layer_tree_host_->SetNeedsUpdateLayers(); | |
| 150 } | |
| 151 | |
| 152 void Layer::SetNeedsCommit() { | |
| 153 if (!layer_tree_host_) | |
| 154 return; | |
| 155 | |
| 156 SetNeedsPushProperties(); | |
| 157 | |
| 158 if (ignore_set_needs_commit_) | |
| 159 return; | |
| 160 | |
| 161 layer_tree_host_->SetNeedsCommit(); | |
| 162 } | |
| 163 | |
| 164 void Layer::SetNeedsFullTreeSync() { | |
| 165 if (!layer_tree_host_) | |
| 166 return; | |
| 167 | |
| 168 layer_tree_host_->SetNeedsFullTreeSync(); | |
| 169 } | |
| 170 | |
| 171 void Layer::SetNextCommitWaitsForActivation() { | |
| 172 if (!layer_tree_host_) | |
| 173 return; | |
| 174 | |
| 175 layer_tree_host_->SetNextCommitWaitsForActivation(); | |
| 176 } | |
| 177 | |
| 178 void Layer::SetNeedsPushProperties() { | |
| 179 if (needs_push_properties_) | |
| 180 return; | |
| 181 if (!parent_should_know_need_push_properties() && parent_) | |
| 182 parent_->AddDependentNeedsPushProperties(); | |
| 183 needs_push_properties_ = true; | |
| 184 } | |
| 185 | |
| 186 void Layer::AddDependentNeedsPushProperties() { | |
| 187 DCHECK_GE(num_dependents_need_push_properties_, 0); | |
| 188 | |
| 189 if (!parent_should_know_need_push_properties() && parent_) | |
| 190 parent_->AddDependentNeedsPushProperties(); | |
| 191 | |
| 192 num_dependents_need_push_properties_++; | |
| 193 } | |
| 194 | |
| 195 void Layer::RemoveDependentNeedsPushProperties() { | |
| 196 num_dependents_need_push_properties_--; | |
| 197 DCHECK_GE(num_dependents_need_push_properties_, 0); | |
| 198 | |
| 199 if (!parent_should_know_need_push_properties() && parent_) | |
| 200 parent_->RemoveDependentNeedsPushProperties(); | |
| 201 } | |
| 202 | |
| 203 bool Layer::IsPropertyChangeAllowed() const { | |
| 204 if (!layer_tree_host_) | |
| 205 return true; | |
| 206 | |
| 207 if (!layer_tree_host_->settings().strict_layer_property_change_checking) | |
| 208 return true; | |
| 209 | |
| 210 return !layer_tree_host_->in_paint_layer_contents(); | |
| 211 } | |
| 212 | |
| 213 gfx::Rect Layer::LayerRectToContentRect(const gfx::Rect& layer_rect) const { | |
| 214 gfx::Rect content_rect = gfx::ScaleToEnclosingRect( | |
| 215 layer_rect, contents_scale_x(), contents_scale_y()); | |
| 216 // Intersect with content rect to avoid the extra pixel because for some | |
| 217 // values x and y, ceil((x / y) * y) may be x + 1. | |
| 218 content_rect.Intersect(gfx::Rect(content_bounds())); | |
| 219 return content_rect; | |
| 220 } | |
| 221 | |
| 222 skia::RefPtr<SkPicture> Layer::GetPicture() const { | |
| 223 return skia::RefPtr<SkPicture>(); | |
| 224 } | |
| 225 | |
| 226 void Layer::SetParent(Layer* layer) { | |
| 227 DCHECK(!layer || !layer->HasAncestor(this)); | |
| 228 | |
| 229 if (parent_should_know_need_push_properties()) { | |
| 230 if (parent_) | |
| 231 parent_->RemoveDependentNeedsPushProperties(); | |
| 232 if (layer) | |
| 233 layer->AddDependentNeedsPushProperties(); | |
| 234 } | |
| 235 | |
| 236 parent_ = layer; | |
| 237 SetLayerTreeHost(parent_ ? parent_->layer_tree_host() : nullptr); | |
| 238 | |
| 239 if (!layer_tree_host_) | |
| 240 return; | |
| 241 const LayerTreeSettings& settings = layer_tree_host_->settings(); | |
| 242 if (!settings.layer_transforms_should_scale_layer_contents) | |
| 243 return; | |
| 244 | |
| 245 reset_raster_scale_to_unknown(); | |
| 246 if (mask_layer_.get()) | |
| 247 mask_layer_->reset_raster_scale_to_unknown(); | |
| 248 if (replica_layer_.get() && replica_layer_->mask_layer_.get()) | |
| 249 replica_layer_->mask_layer_->reset_raster_scale_to_unknown(); | |
| 250 } | |
| 251 | |
| 252 void Layer::AddChild(scoped_refptr<Layer> child) { | |
| 253 InsertChild(child, children_.size()); | |
| 254 } | |
| 255 | |
| 256 void Layer::InsertChild(scoped_refptr<Layer> child, size_t index) { | |
| 257 DCHECK(IsPropertyChangeAllowed()); | |
| 258 child->RemoveFromParent(); | |
| 259 AddDrawableDescendants(child->NumDescendantsThatDrawContent() + | |
| 260 (child->DrawsContent() ? 1 : 0)); | |
| 261 child->SetParent(this); | |
| 262 child->stacking_order_changed_ = true; | |
| 263 | |
| 264 index = std::min(index, children_.size()); | |
| 265 children_.insert(children_.begin() + index, child); | |
| 266 SetNeedsFullTreeSync(); | |
| 267 } | |
| 268 | |
| 269 void Layer::RemoveFromParent() { | |
| 270 DCHECK(IsPropertyChangeAllowed()); | |
| 271 if (parent_) | |
| 272 parent_->RemoveChildOrDependent(this); | |
| 273 } | |
| 274 | |
| 275 void Layer::RemoveChildOrDependent(Layer* child) { | |
| 276 if (mask_layer_.get() == child) { | |
| 277 mask_layer_->SetParent(nullptr); | |
| 278 mask_layer_ = nullptr; | |
| 279 SetNeedsFullTreeSync(); | |
| 280 return; | |
| 281 } | |
| 282 if (replica_layer_.get() == child) { | |
| 283 replica_layer_->SetParent(nullptr); | |
| 284 replica_layer_ = nullptr; | |
| 285 SetNeedsFullTreeSync(); | |
| 286 return; | |
| 287 } | |
| 288 | |
| 289 for (LayerList::iterator iter = children_.begin(); | |
| 290 iter != children_.end(); | |
| 291 ++iter) { | |
| 292 if (iter->get() != child) | |
| 293 continue; | |
| 294 | |
| 295 child->SetParent(nullptr); | |
| 296 AddDrawableDescendants(-child->NumDescendantsThatDrawContent() - | |
| 297 (child->DrawsContent() ? 1 : 0)); | |
| 298 children_.erase(iter); | |
| 299 SetNeedsFullTreeSync(); | |
| 300 return; | |
| 301 } | |
| 302 } | |
| 303 | |
| 304 void Layer::ReplaceChild(Layer* reference, scoped_refptr<Layer> new_layer) { | |
| 305 DCHECK(reference); | |
| 306 DCHECK_EQ(reference->parent(), this); | |
| 307 DCHECK(IsPropertyChangeAllowed()); | |
| 308 | |
| 309 if (reference == new_layer.get()) | |
| 310 return; | |
| 311 | |
| 312 int reference_index = IndexOfChild(reference); | |
| 313 if (reference_index == -1) { | |
| 314 NOTREACHED(); | |
| 315 return; | |
| 316 } | |
| 317 | |
| 318 reference->RemoveFromParent(); | |
| 319 | |
| 320 if (new_layer.get()) { | |
| 321 new_layer->RemoveFromParent(); | |
| 322 InsertChild(new_layer, reference_index); | |
| 323 } | |
| 324 } | |
| 325 | |
| 326 int Layer::IndexOfChild(const Layer* reference) { | |
| 327 for (size_t i = 0; i < children_.size(); ++i) { | |
| 328 if (children_[i].get() == reference) | |
| 329 return i; | |
| 330 } | |
| 331 return -1; | |
| 332 } | |
| 333 | |
| 334 void Layer::SetBounds(const gfx::Size& size) { | |
| 335 DCHECK(IsPropertyChangeAllowed()); | |
| 336 if (bounds() == size) | |
| 337 return; | |
| 338 | |
| 339 bounds_ = size; | |
| 340 SetNeedsCommit(); | |
| 341 } | |
| 342 | |
| 343 Layer* Layer::RootLayer() { | |
| 344 Layer* layer = this; | |
| 345 while (layer->parent()) | |
| 346 layer = layer->parent(); | |
| 347 return layer; | |
| 348 } | |
| 349 | |
| 350 void Layer::RemoveAllChildren() { | |
| 351 DCHECK(IsPropertyChangeAllowed()); | |
| 352 while (children_.size()) { | |
| 353 Layer* layer = children_[0].get(); | |
| 354 DCHECK_EQ(this, layer->parent()); | |
| 355 layer->RemoveFromParent(); | |
| 356 } | |
| 357 } | |
| 358 | |
| 359 void Layer::SetChildren(const LayerList& children) { | |
| 360 DCHECK(IsPropertyChangeAllowed()); | |
| 361 if (children == children_) | |
| 362 return; | |
| 363 | |
| 364 RemoveAllChildren(); | |
| 365 for (size_t i = 0; i < children.size(); ++i) | |
| 366 AddChild(children[i]); | |
| 367 } | |
| 368 | |
| 369 bool Layer::HasAncestor(const Layer* ancestor) const { | |
| 370 for (const Layer* layer = parent(); layer; layer = layer->parent()) { | |
| 371 if (layer == ancestor) | |
| 372 return true; | |
| 373 } | |
| 374 return false; | |
| 375 } | |
| 376 | |
| 377 void Layer::RequestCopyOfOutput( | |
| 378 scoped_ptr<CopyOutputRequest> request) { | |
| 379 DCHECK(IsPropertyChangeAllowed()); | |
| 380 if (request->IsEmpty()) | |
| 381 return; | |
| 382 copy_requests_.push_back(request.Pass()); | |
| 383 SetNeedsCommit(); | |
| 384 } | |
| 385 | |
| 386 void Layer::SetBackgroundColor(SkColor background_color) { | |
| 387 DCHECK(IsPropertyChangeAllowed()); | |
| 388 if (background_color_ == background_color) | |
| 389 return; | |
| 390 background_color_ = background_color; | |
| 391 SetNeedsCommit(); | |
| 392 } | |
| 393 | |
| 394 SkColor Layer::SafeOpaqueBackgroundColor() const { | |
| 395 SkColor color = background_color(); | |
| 396 if (SkColorGetA(color) == 255 && !contents_opaque()) { | |
| 397 color = SK_ColorTRANSPARENT; | |
| 398 } else if (SkColorGetA(color) != 255 && contents_opaque()) { | |
| 399 for (const Layer* layer = parent(); layer; | |
| 400 layer = layer->parent()) { | |
| 401 color = layer->background_color(); | |
| 402 if (SkColorGetA(color) == 255) | |
| 403 break; | |
| 404 } | |
| 405 if (SkColorGetA(color) != 255) | |
| 406 color = layer_tree_host_->background_color(); | |
| 407 if (SkColorGetA(color) != 255) | |
| 408 color = SkColorSetA(color, 255); | |
| 409 } | |
| 410 return color; | |
| 411 } | |
| 412 | |
| 413 void Layer::CalculateContentsScale(float ideal_contents_scale, | |
| 414 float* contents_scale_x, | |
| 415 float* contents_scale_y, | |
| 416 gfx::Size* content_bounds) { | |
| 417 DCHECK(layer_tree_host_); | |
| 418 | |
| 419 *contents_scale_x = 1; | |
| 420 *contents_scale_y = 1; | |
| 421 *content_bounds = bounds(); | |
| 422 } | |
| 423 | |
| 424 void Layer::SetMasksToBounds(bool masks_to_bounds) { | |
| 425 DCHECK(IsPropertyChangeAllowed()); | |
| 426 if (masks_to_bounds_ == masks_to_bounds) | |
| 427 return; | |
| 428 masks_to_bounds_ = masks_to_bounds; | |
| 429 SetNeedsCommit(); | |
| 430 } | |
| 431 | |
| 432 void Layer::SetMaskLayer(Layer* mask_layer) { | |
| 433 DCHECK(IsPropertyChangeAllowed()); | |
| 434 if (mask_layer_.get() == mask_layer) | |
| 435 return; | |
| 436 if (mask_layer_.get()) { | |
| 437 DCHECK_EQ(this, mask_layer_->parent()); | |
| 438 mask_layer_->RemoveFromParent(); | |
| 439 } | |
| 440 mask_layer_ = mask_layer; | |
| 441 if (mask_layer_.get()) { | |
| 442 DCHECK(!mask_layer_->parent()); | |
| 443 mask_layer_->RemoveFromParent(); | |
| 444 mask_layer_->SetParent(this); | |
| 445 mask_layer_->SetIsMask(true); | |
| 446 } | |
| 447 SetNeedsFullTreeSync(); | |
| 448 } | |
| 449 | |
| 450 void Layer::SetReplicaLayer(Layer* layer) { | |
| 451 DCHECK(IsPropertyChangeAllowed()); | |
| 452 if (replica_layer_.get() == layer) | |
| 453 return; | |
| 454 if (replica_layer_.get()) { | |
| 455 DCHECK_EQ(this, replica_layer_->parent()); | |
| 456 replica_layer_->RemoveFromParent(); | |
| 457 } | |
| 458 replica_layer_ = layer; | |
| 459 if (replica_layer_.get()) { | |
| 460 DCHECK(!replica_layer_->parent()); | |
| 461 replica_layer_->RemoveFromParent(); | |
| 462 replica_layer_->SetParent(this); | |
| 463 } | |
| 464 SetNeedsFullTreeSync(); | |
| 465 } | |
| 466 | |
| 467 void Layer::SetFilters(const FilterOperations& filters) { | |
| 468 DCHECK(IsPropertyChangeAllowed()); | |
| 469 if (filters_ == filters) | |
| 470 return; | |
| 471 filters_ = filters; | |
| 472 SetNeedsCommit(); | |
| 473 } | |
| 474 | |
| 475 bool Layer::FilterIsAnimating() const { | |
| 476 return layer_animation_controller_->IsAnimatingProperty(Animation::FILTER); | |
| 477 } | |
| 478 | |
| 479 void Layer::SetBackgroundFilters(const FilterOperations& filters) { | |
| 480 DCHECK(IsPropertyChangeAllowed()); | |
| 481 if (background_filters_ == filters) | |
| 482 return; | |
| 483 background_filters_ = filters; | |
| 484 SetNeedsCommit(); | |
| 485 } | |
| 486 | |
| 487 void Layer::SetOpacity(float opacity) { | |
| 488 DCHECK(IsPropertyChangeAllowed()); | |
| 489 if (opacity_ == opacity) | |
| 490 return; | |
| 491 opacity_ = opacity; | |
| 492 SetNeedsCommit(); | |
| 493 } | |
| 494 | |
| 495 bool Layer::OpacityIsAnimating() const { | |
| 496 return layer_animation_controller_->IsAnimatingProperty(Animation::OPACITY); | |
| 497 } | |
| 498 | |
| 499 bool Layer::OpacityCanAnimateOnImplThread() const { | |
| 500 return false; | |
| 501 } | |
| 502 | |
| 503 void Layer::SetBlendMode(SkXfermode::Mode blend_mode) { | |
| 504 DCHECK(IsPropertyChangeAllowed()); | |
| 505 if (blend_mode_ == blend_mode) | |
| 506 return; | |
| 507 | |
| 508 // Allowing only blend modes that are defined in the CSS Compositing standard: | |
| 509 // http://dev.w3.org/fxtf/compositing-1/#blending | |
| 510 switch (blend_mode) { | |
| 511 case SkXfermode::kSrcOver_Mode: | |
| 512 case SkXfermode::kScreen_Mode: | |
| 513 case SkXfermode::kOverlay_Mode: | |
| 514 case SkXfermode::kDarken_Mode: | |
| 515 case SkXfermode::kLighten_Mode: | |
| 516 case SkXfermode::kColorDodge_Mode: | |
| 517 case SkXfermode::kColorBurn_Mode: | |
| 518 case SkXfermode::kHardLight_Mode: | |
| 519 case SkXfermode::kSoftLight_Mode: | |
| 520 case SkXfermode::kDifference_Mode: | |
| 521 case SkXfermode::kExclusion_Mode: | |
| 522 case SkXfermode::kMultiply_Mode: | |
| 523 case SkXfermode::kHue_Mode: | |
| 524 case SkXfermode::kSaturation_Mode: | |
| 525 case SkXfermode::kColor_Mode: | |
| 526 case SkXfermode::kLuminosity_Mode: | |
| 527 // supported blend modes | |
| 528 break; | |
| 529 case SkXfermode::kClear_Mode: | |
| 530 case SkXfermode::kSrc_Mode: | |
| 531 case SkXfermode::kDst_Mode: | |
| 532 case SkXfermode::kDstOver_Mode: | |
| 533 case SkXfermode::kSrcIn_Mode: | |
| 534 case SkXfermode::kDstIn_Mode: | |
| 535 case SkXfermode::kSrcOut_Mode: | |
| 536 case SkXfermode::kDstOut_Mode: | |
| 537 case SkXfermode::kSrcATop_Mode: | |
| 538 case SkXfermode::kDstATop_Mode: | |
| 539 case SkXfermode::kXor_Mode: | |
| 540 case SkXfermode::kPlus_Mode: | |
| 541 case SkXfermode::kModulate_Mode: | |
| 542 // Porter Duff Compositing Operators are not yet supported | |
| 543 // http://dev.w3.org/fxtf/compositing-1/#porterduffcompositingoperators | |
| 544 NOTREACHED(); | |
| 545 return; | |
| 546 } | |
| 547 | |
| 548 blend_mode_ = blend_mode; | |
| 549 SetNeedsCommit(); | |
| 550 } | |
| 551 | |
| 552 void Layer::SetIsRootForIsolatedGroup(bool root) { | |
| 553 DCHECK(IsPropertyChangeAllowed()); | |
| 554 if (is_root_for_isolated_group_ == root) | |
| 555 return; | |
| 556 is_root_for_isolated_group_ = root; | |
| 557 SetNeedsCommit(); | |
| 558 } | |
| 559 | |
| 560 void Layer::SetContentsOpaque(bool opaque) { | |
| 561 DCHECK(IsPropertyChangeAllowed()); | |
| 562 if (contents_opaque_ == opaque) | |
| 563 return; | |
| 564 contents_opaque_ = opaque; | |
| 565 SetNeedsCommit(); | |
| 566 } | |
| 567 | |
| 568 void Layer::SetPosition(const gfx::PointF& position) { | |
| 569 DCHECK(IsPropertyChangeAllowed()); | |
| 570 if (position_ == position) | |
| 571 return; | |
| 572 position_ = position; | |
| 573 SetNeedsCommit(); | |
| 574 } | |
| 575 | |
| 576 bool Layer::IsContainerForFixedPositionLayers() const { | |
| 577 if (!transform_.IsIdentityOrTranslation()) | |
| 578 return true; | |
| 579 if (parent_ && !parent_->transform_.IsIdentityOrTranslation()) | |
| 580 return true; | |
| 581 return is_container_for_fixed_position_layers_; | |
| 582 } | |
| 583 | |
| 584 void Layer::SetTransform(const gfx::Transform& transform) { | |
| 585 DCHECK(IsPropertyChangeAllowed()); | |
| 586 if (transform_ == transform) | |
| 587 return; | |
| 588 transform_ = transform; | |
| 589 transform_is_invertible_ = transform.IsInvertible(); | |
| 590 SetNeedsCommit(); | |
| 591 } | |
| 592 | |
| 593 void Layer::SetTransformOrigin(const gfx::Point3F& transform_origin) { | |
| 594 DCHECK(IsPropertyChangeAllowed()); | |
| 595 if (transform_origin_ == transform_origin) | |
| 596 return; | |
| 597 transform_origin_ = transform_origin; | |
| 598 SetNeedsCommit(); | |
| 599 } | |
| 600 | |
| 601 bool Layer::AnimationsPreserveAxisAlignment() const { | |
| 602 return layer_animation_controller_->AnimationsPreserveAxisAlignment(); | |
| 603 } | |
| 604 | |
| 605 bool Layer::TransformIsAnimating() const { | |
| 606 return layer_animation_controller_->IsAnimatingProperty(Animation::TRANSFORM); | |
| 607 } | |
| 608 | |
| 609 void Layer::SetScrollParent(Layer* parent) { | |
| 610 DCHECK(IsPropertyChangeAllowed()); | |
| 611 if (scroll_parent_ == parent) | |
| 612 return; | |
| 613 | |
| 614 if (scroll_parent_) | |
| 615 scroll_parent_->RemoveScrollChild(this); | |
| 616 | |
| 617 scroll_parent_ = parent; | |
| 618 | |
| 619 if (scroll_parent_) | |
| 620 scroll_parent_->AddScrollChild(this); | |
| 621 | |
| 622 SetNeedsCommit(); | |
| 623 } | |
| 624 | |
| 625 void Layer::AddScrollChild(Layer* child) { | |
| 626 if (!scroll_children_) | |
| 627 scroll_children_.reset(new std::set<Layer*>); | |
| 628 scroll_children_->insert(child); | |
| 629 SetNeedsCommit(); | |
| 630 } | |
| 631 | |
| 632 void Layer::RemoveScrollChild(Layer* child) { | |
| 633 scroll_children_->erase(child); | |
| 634 if (scroll_children_->empty()) | |
| 635 scroll_children_ = nullptr; | |
| 636 SetNeedsCommit(); | |
| 637 } | |
| 638 | |
| 639 void Layer::SetClipParent(Layer* ancestor) { | |
| 640 DCHECK(IsPropertyChangeAllowed()); | |
| 641 if (clip_parent_ == ancestor) | |
| 642 return; | |
| 643 | |
| 644 if (clip_parent_) | |
| 645 clip_parent_->RemoveClipChild(this); | |
| 646 | |
| 647 clip_parent_ = ancestor; | |
| 648 | |
| 649 if (clip_parent_) | |
| 650 clip_parent_->AddClipChild(this); | |
| 651 | |
| 652 SetNeedsCommit(); | |
| 653 } | |
| 654 | |
| 655 void Layer::AddClipChild(Layer* child) { | |
| 656 if (!clip_children_) | |
| 657 clip_children_.reset(new std::set<Layer*>); | |
| 658 clip_children_->insert(child); | |
| 659 SetNeedsCommit(); | |
| 660 } | |
| 661 | |
| 662 void Layer::RemoveClipChild(Layer* child) { | |
| 663 clip_children_->erase(child); | |
| 664 if (clip_children_->empty()) | |
| 665 clip_children_ = nullptr; | |
| 666 SetNeedsCommit(); | |
| 667 } | |
| 668 | |
| 669 void Layer::SetScrollOffset(const gfx::ScrollOffset& scroll_offset) { | |
| 670 DCHECK(IsPropertyChangeAllowed()); | |
| 671 | |
| 672 if (scroll_offset_ == scroll_offset) | |
| 673 return; | |
| 674 scroll_offset_ = scroll_offset; | |
| 675 SetNeedsCommit(); | |
| 676 } | |
| 677 | |
| 678 void Layer::SetScrollCompensationAdjustment( | |
| 679 const gfx::Vector2dF& scroll_compensation_adjustment) { | |
| 680 if (scroll_compensation_adjustment_ == scroll_compensation_adjustment) | |
| 681 return; | |
| 682 scroll_compensation_adjustment_ = scroll_compensation_adjustment; | |
| 683 SetNeedsCommit(); | |
| 684 } | |
| 685 | |
| 686 gfx::Vector2dF Layer::ScrollCompensationAdjustment() const { | |
| 687 return scroll_compensation_adjustment_; | |
| 688 } | |
| 689 | |
| 690 void Layer::SetScrollOffsetFromImplSide( | |
| 691 const gfx::ScrollOffset& scroll_offset) { | |
| 692 DCHECK(IsPropertyChangeAllowed()); | |
| 693 // This function only gets called during a BeginMainFrame, so there | |
| 694 // is no need to call SetNeedsUpdate here. | |
| 695 DCHECK(layer_tree_host_ && layer_tree_host_->CommitRequested()); | |
| 696 if (scroll_offset_ == scroll_offset) | |
| 697 return; | |
| 698 scroll_offset_ = scroll_offset; | |
| 699 SetNeedsPushProperties(); | |
| 700 if (!did_scroll_callback_.is_null()) | |
| 701 did_scroll_callback_.Run(); | |
| 702 // The callback could potentially change the layer structure: | |
| 703 // "this" may have been destroyed during the process. | |
| 704 } | |
| 705 | |
| 706 void Layer::SetScrollClipLayerId(int clip_layer_id) { | |
| 707 DCHECK(IsPropertyChangeAllowed()); | |
| 708 if (scroll_clip_layer_id_ == clip_layer_id) | |
| 709 return; | |
| 710 scroll_clip_layer_id_ = clip_layer_id; | |
| 711 SetNeedsCommit(); | |
| 712 } | |
| 713 | |
| 714 void Layer::SetUserScrollable(bool horizontal, bool vertical) { | |
| 715 DCHECK(IsPropertyChangeAllowed()); | |
| 716 if (user_scrollable_horizontal_ == horizontal && | |
| 717 user_scrollable_vertical_ == vertical) | |
| 718 return; | |
| 719 user_scrollable_horizontal_ = horizontal; | |
| 720 user_scrollable_vertical_ = vertical; | |
| 721 SetNeedsCommit(); | |
| 722 } | |
| 723 | |
| 724 void Layer::SetShouldScrollOnMainThread(bool should_scroll_on_main_thread) { | |
| 725 DCHECK(IsPropertyChangeAllowed()); | |
| 726 if (should_scroll_on_main_thread_ == should_scroll_on_main_thread) | |
| 727 return; | |
| 728 should_scroll_on_main_thread_ = should_scroll_on_main_thread; | |
| 729 SetNeedsCommit(); | |
| 730 } | |
| 731 | |
| 732 void Layer::SetHaveWheelEventHandlers(bool have_wheel_event_handlers) { | |
| 733 DCHECK(IsPropertyChangeAllowed()); | |
| 734 if (have_wheel_event_handlers_ == have_wheel_event_handlers) | |
| 735 return; | |
| 736 have_wheel_event_handlers_ = have_wheel_event_handlers; | |
| 737 SetNeedsCommit(); | |
| 738 } | |
| 739 | |
| 740 void Layer::SetHaveScrollEventHandlers(bool have_scroll_event_handlers) { | |
| 741 DCHECK(IsPropertyChangeAllowed()); | |
| 742 if (have_scroll_event_handlers_ == have_scroll_event_handlers) | |
| 743 return; | |
| 744 have_scroll_event_handlers_ = have_scroll_event_handlers; | |
| 745 SetNeedsCommit(); | |
| 746 } | |
| 747 | |
| 748 void Layer::SetNonFastScrollableRegion(const Region& region) { | |
| 749 DCHECK(IsPropertyChangeAllowed()); | |
| 750 if (non_fast_scrollable_region_ == region) | |
| 751 return; | |
| 752 non_fast_scrollable_region_ = region; | |
| 753 SetNeedsCommit(); | |
| 754 } | |
| 755 | |
| 756 void Layer::SetTouchEventHandlerRegion(const Region& region) { | |
| 757 DCHECK(IsPropertyChangeAllowed()); | |
| 758 if (touch_event_handler_region_ == region) | |
| 759 return; | |
| 760 touch_event_handler_region_ = region; | |
| 761 SetNeedsCommit(); | |
| 762 } | |
| 763 | |
| 764 void Layer::SetScrollBlocksOn(ScrollBlocksOn scroll_blocks_on) { | |
| 765 DCHECK(IsPropertyChangeAllowed()); | |
| 766 if (scroll_blocks_on_ == scroll_blocks_on) | |
| 767 return; | |
| 768 scroll_blocks_on_ = scroll_blocks_on; | |
| 769 SetNeedsCommit(); | |
| 770 } | |
| 771 | |
| 772 void Layer::SetDrawCheckerboardForMissingTiles(bool checkerboard) { | |
| 773 DCHECK(IsPropertyChangeAllowed()); | |
| 774 if (draw_checkerboard_for_missing_tiles_ == checkerboard) | |
| 775 return; | |
| 776 draw_checkerboard_for_missing_tiles_ = checkerboard; | |
| 777 SetNeedsCommit(); | |
| 778 } | |
| 779 | |
| 780 void Layer::SetForceRenderSurface(bool force) { | |
| 781 DCHECK(IsPropertyChangeAllowed()); | |
| 782 if (force_render_surface_ == force) | |
| 783 return; | |
| 784 force_render_surface_ = force; | |
| 785 SetNeedsCommit(); | |
| 786 } | |
| 787 | |
| 788 void Layer::SetDoubleSided(bool double_sided) { | |
| 789 DCHECK(IsPropertyChangeAllowed()); | |
| 790 if (double_sided_ == double_sided) | |
| 791 return; | |
| 792 double_sided_ = double_sided; | |
| 793 SetNeedsCommit(); | |
| 794 } | |
| 795 | |
| 796 void Layer::Set3dSortingContextId(int id) { | |
| 797 DCHECK(IsPropertyChangeAllowed()); | |
| 798 if (id == sorting_context_id_) | |
| 799 return; | |
| 800 sorting_context_id_ = id; | |
| 801 SetNeedsCommit(); | |
| 802 } | |
| 803 | |
| 804 void Layer::SetShouldFlattenTransform(bool should_flatten) { | |
| 805 DCHECK(IsPropertyChangeAllowed()); | |
| 806 if (should_flatten_transform_ == should_flatten) | |
| 807 return; | |
| 808 should_flatten_transform_ = should_flatten; | |
| 809 SetNeedsCommit(); | |
| 810 } | |
| 811 | |
| 812 void Layer::SetIsDrawable(bool is_drawable) { | |
| 813 DCHECK(IsPropertyChangeAllowed()); | |
| 814 if (is_drawable_ == is_drawable) | |
| 815 return; | |
| 816 | |
| 817 is_drawable_ = is_drawable; | |
| 818 UpdateDrawsContent(HasDrawableContent()); | |
| 819 } | |
| 820 | |
| 821 void Layer::SetHideLayerAndSubtree(bool hide) { | |
| 822 DCHECK(IsPropertyChangeAllowed()); | |
| 823 if (hide_layer_and_subtree_ == hide) | |
| 824 return; | |
| 825 | |
| 826 hide_layer_and_subtree_ = hide; | |
| 827 SetNeedsCommit(); | |
| 828 } | |
| 829 | |
| 830 void Layer::SetNeedsDisplayRect(const gfx::Rect& dirty_rect) { | |
| 831 if (dirty_rect.IsEmpty()) | |
| 832 return; | |
| 833 | |
| 834 SetNeedsPushProperties(); | |
| 835 update_rect_.Union(dirty_rect); | |
| 836 | |
| 837 if (DrawsContent()) | |
| 838 SetNeedsUpdate(); | |
| 839 } | |
| 840 | |
| 841 bool Layer::DescendantIsFixedToContainerLayer() const { | |
| 842 for (size_t i = 0; i < children_.size(); ++i) { | |
| 843 if (children_[i]->position_constraint_.is_fixed_position() || | |
| 844 children_[i]->DescendantIsFixedToContainerLayer()) | |
| 845 return true; | |
| 846 } | |
| 847 return false; | |
| 848 } | |
| 849 | |
| 850 void Layer::SetIsContainerForFixedPositionLayers(bool container) { | |
| 851 if (is_container_for_fixed_position_layers_ == container) | |
| 852 return; | |
| 853 is_container_for_fixed_position_layers_ = container; | |
| 854 | |
| 855 if (layer_tree_host_ && layer_tree_host_->CommitRequested()) | |
| 856 return; | |
| 857 | |
| 858 // Only request a commit if we have a fixed positioned descendant. | |
| 859 if (DescendantIsFixedToContainerLayer()) | |
| 860 SetNeedsCommit(); | |
| 861 } | |
| 862 | |
| 863 void Layer::SetPositionConstraint(const LayerPositionConstraint& constraint) { | |
| 864 DCHECK(IsPropertyChangeAllowed()); | |
| 865 if (position_constraint_ == constraint) | |
| 866 return; | |
| 867 position_constraint_ = constraint; | |
| 868 SetNeedsCommit(); | |
| 869 } | |
| 870 | |
| 871 static void RunCopyCallbackOnMainThread(scoped_ptr<CopyOutputRequest> request, | |
| 872 scoped_ptr<CopyOutputResult> result) { | |
| 873 request->SendResult(result.Pass()); | |
| 874 } | |
| 875 | |
| 876 static void PostCopyCallbackToMainThread( | |
| 877 scoped_refptr<base::SingleThreadTaskRunner> main_thread_task_runner, | |
| 878 scoped_ptr<CopyOutputRequest> request, | |
| 879 scoped_ptr<CopyOutputResult> result) { | |
| 880 main_thread_task_runner->PostTask(FROM_HERE, | |
| 881 base::Bind(&RunCopyCallbackOnMainThread, | |
| 882 base::Passed(&request), | |
| 883 base::Passed(&result))); | |
| 884 } | |
| 885 | |
| 886 void Layer::PushPropertiesTo(LayerImpl* layer) { | |
| 887 DCHECK(layer_tree_host_); | |
| 888 | |
| 889 // If we did not SavePaintProperties() for the layer this frame, then push the | |
| 890 // real property values, not the paint property values. | |
| 891 bool use_paint_properties = paint_properties_.source_frame_number == | |
| 892 layer_tree_host_->source_frame_number(); | |
| 893 | |
| 894 layer->SetTransformOrigin(transform_origin_); | |
| 895 layer->SetBackgroundColor(background_color_); | |
| 896 layer->SetBounds(use_paint_properties ? paint_properties_.bounds | |
| 897 : bounds_); | |
| 898 layer->SetContentBounds(content_bounds()); | |
| 899 layer->SetContentsScale(contents_scale_x(), contents_scale_y()); | |
| 900 | |
| 901 if (frame_viewer_instrumentation::IsTracingLayerTreeSnapshots()) | |
| 902 layer->SetDebugInfo(TakeDebugInfo()); | |
| 903 | |
| 904 layer->SetDoubleSided(double_sided_); | |
| 905 layer->SetDrawCheckerboardForMissingTiles( | |
| 906 draw_checkerboard_for_missing_tiles_); | |
| 907 layer->SetDrawsContent(DrawsContent()); | |
| 908 layer->SetHideLayerAndSubtree(hide_layer_and_subtree_); | |
| 909 layer->SetHasRenderSurface(has_render_surface_ || layer->HasCopyRequest()); | |
| 910 if (!layer->FilterIsAnimatingOnImplOnly() && !FilterIsAnimating()) | |
| 911 layer->SetFilters(filters_); | |
| 912 DCHECK(!(FilterIsAnimating() && layer->FilterIsAnimatingOnImplOnly())); | |
| 913 layer->SetBackgroundFilters(background_filters()); | |
| 914 layer->SetMasksToBounds(masks_to_bounds_); | |
| 915 layer->SetShouldScrollOnMainThread(should_scroll_on_main_thread_); | |
| 916 layer->SetHaveWheelEventHandlers(have_wheel_event_handlers_); | |
| 917 layer->SetHaveScrollEventHandlers(have_scroll_event_handlers_); | |
| 918 layer->SetNonFastScrollableRegion(non_fast_scrollable_region_); | |
| 919 layer->SetTouchEventHandlerRegion(touch_event_handler_region_); | |
| 920 layer->SetScrollBlocksOn(scroll_blocks_on_); | |
| 921 layer->SetContentsOpaque(contents_opaque_); | |
| 922 if (!layer->OpacityIsAnimatingOnImplOnly() && !OpacityIsAnimating()) | |
| 923 layer->SetOpacity(opacity_); | |
| 924 DCHECK(!(OpacityIsAnimating() && layer->OpacityIsAnimatingOnImplOnly())); | |
| 925 layer->SetBlendMode(blend_mode_); | |
| 926 layer->SetIsRootForIsolatedGroup(is_root_for_isolated_group_); | |
| 927 layer->SetPosition(position_); | |
| 928 layer->SetIsContainerForFixedPositionLayers( | |
| 929 IsContainerForFixedPositionLayers()); | |
| 930 layer->SetPositionConstraint(position_constraint_); | |
| 931 layer->SetShouldFlattenTransform(should_flatten_transform_); | |
| 932 layer->SetUseParentBackfaceVisibility(use_parent_backface_visibility_); | |
| 933 if (!layer->TransformIsAnimatingOnImplOnly() && !TransformIsAnimating()) | |
| 934 layer->SetTransformAndInvertibility(transform_, transform_is_invertible_); | |
| 935 DCHECK(!(TransformIsAnimating() && layer->TransformIsAnimatingOnImplOnly())); | |
| 936 layer->Set3dSortingContextId(sorting_context_id_); | |
| 937 layer->SetNumDescendantsThatDrawContent(num_descendants_that_draw_content_); | |
| 938 | |
| 939 layer->SetScrollClipLayer(scroll_clip_layer_id_); | |
| 940 layer->set_user_scrollable_horizontal(user_scrollable_horizontal_); | |
| 941 layer->set_user_scrollable_vertical(user_scrollable_vertical_); | |
| 942 | |
| 943 LayerImpl* scroll_parent = nullptr; | |
| 944 if (scroll_parent_) { | |
| 945 scroll_parent = layer->layer_tree_impl()->LayerById(scroll_parent_->id()); | |
| 946 DCHECK(scroll_parent); | |
| 947 } | |
| 948 | |
| 949 layer->SetScrollParent(scroll_parent); | |
| 950 if (scroll_children_) { | |
| 951 std::set<LayerImpl*>* scroll_children = new std::set<LayerImpl*>; | |
| 952 for (std::set<Layer*>::iterator it = scroll_children_->begin(); | |
| 953 it != scroll_children_->end(); | |
| 954 ++it) { | |
| 955 DCHECK_EQ((*it)->scroll_parent(), this); | |
| 956 LayerImpl* scroll_child = | |
| 957 layer->layer_tree_impl()->LayerById((*it)->id()); | |
| 958 DCHECK(scroll_child); | |
| 959 scroll_children->insert(scroll_child); | |
| 960 } | |
| 961 layer->SetScrollChildren(scroll_children); | |
| 962 } else { | |
| 963 layer->SetScrollChildren(nullptr); | |
| 964 } | |
| 965 | |
| 966 LayerImpl* clip_parent = nullptr; | |
| 967 if (clip_parent_) { | |
| 968 clip_parent = | |
| 969 layer->layer_tree_impl()->LayerById(clip_parent_->id()); | |
| 970 DCHECK(clip_parent); | |
| 971 } | |
| 972 | |
| 973 layer->SetClipParent(clip_parent); | |
| 974 if (clip_children_) { | |
| 975 std::set<LayerImpl*>* clip_children = new std::set<LayerImpl*>; | |
| 976 for (std::set<Layer*>::iterator it = clip_children_->begin(); | |
| 977 it != clip_children_->end(); ++it) { | |
| 978 DCHECK_EQ((*it)->clip_parent(), this); | |
| 979 LayerImpl* clip_child = layer->layer_tree_impl()->LayerById((*it)->id()); | |
| 980 DCHECK(clip_child); | |
| 981 clip_children->insert(clip_child); | |
| 982 } | |
| 983 layer->SetClipChildren(clip_children); | |
| 984 } else { | |
| 985 layer->SetClipChildren(nullptr); | |
| 986 } | |
| 987 | |
| 988 // When a scroll offset animation is interrupted the new scroll position on | |
| 989 // the pending tree will clobber any impl-side scrolling occuring on the | |
| 990 // active tree. To do so, avoid scrolling the pending tree along with it | |
| 991 // instead of trying to undo that scrolling later. | |
| 992 if (layer_animation_controller_->scroll_offset_animation_was_interrupted()) | |
| 993 layer->PushScrollOffsetFromMainThreadAndClobberActiveValue(scroll_offset_); | |
| 994 else | |
| 995 layer->PushScrollOffsetFromMainThread(scroll_offset_); | |
| 996 layer->SetScrollCompensationAdjustment(ScrollCompensationAdjustment()); | |
| 997 | |
| 998 // Wrap the copy_requests_ in a PostTask to the main thread. | |
| 999 ScopedPtrVector<CopyOutputRequest> main_thread_copy_requests; | |
| 1000 for (ScopedPtrVector<CopyOutputRequest>::iterator it = copy_requests_.begin(); | |
| 1001 it != copy_requests_.end(); | |
| 1002 ++it) { | |
| 1003 scoped_refptr<base::SingleThreadTaskRunner> main_thread_task_runner = | |
| 1004 layer_tree_host()->proxy()->MainThreadTaskRunner(); | |
| 1005 scoped_ptr<CopyOutputRequest> original_request = copy_requests_.take(it); | |
| 1006 const CopyOutputRequest& original_request_ref = *original_request; | |
| 1007 scoped_ptr<CopyOutputRequest> main_thread_request = | |
| 1008 CopyOutputRequest::CreateRelayRequest( | |
| 1009 original_request_ref, | |
| 1010 base::Bind(&PostCopyCallbackToMainThread, | |
| 1011 main_thread_task_runner, | |
| 1012 base::Passed(&original_request))); | |
| 1013 main_thread_copy_requests.push_back(main_thread_request.Pass()); | |
| 1014 } | |
| 1015 copy_requests_.clear(); | |
| 1016 layer->PassCopyRequests(&main_thread_copy_requests); | |
| 1017 | |
| 1018 // If the main thread commits multiple times before the impl thread actually | |
| 1019 // draws, then damage tracking will become incorrect if we simply clobber the | |
| 1020 // update_rect here. The LayerImpl's update_rect needs to accumulate (i.e. | |
| 1021 // union) any update changes that have occurred on the main thread. | |
| 1022 update_rect_.Union(layer->update_rect()); | |
| 1023 layer->SetUpdateRect(update_rect_); | |
| 1024 | |
| 1025 layer->SetStackingOrderChanged(stacking_order_changed_); | |
| 1026 | |
| 1027 layer_animation_controller_->PushAnimationUpdatesTo( | |
| 1028 layer->layer_animation_controller()); | |
| 1029 | |
| 1030 if (frame_timing_requests_dirty_) { | |
| 1031 layer->PassFrameTimingRequests(&frame_timing_requests_); | |
| 1032 frame_timing_requests_dirty_ = false; | |
| 1033 } | |
| 1034 | |
| 1035 // Reset any state that should be cleared for the next update. | |
| 1036 stacking_order_changed_ = false; | |
| 1037 update_rect_ = gfx::Rect(); | |
| 1038 | |
| 1039 needs_push_properties_ = false; | |
| 1040 num_dependents_need_push_properties_ = 0; | |
| 1041 } | |
| 1042 | |
| 1043 scoped_ptr<LayerImpl> Layer::CreateLayerImpl(LayerTreeImpl* tree_impl) { | |
| 1044 return LayerImpl::Create(tree_impl, layer_id_, | |
| 1045 new LayerImpl::SyncedScrollOffset); | |
| 1046 } | |
| 1047 | |
| 1048 bool Layer::DrawsContent() const { | |
| 1049 return draws_content_; | |
| 1050 } | |
| 1051 | |
| 1052 bool Layer::HasDrawableContent() const { | |
| 1053 return is_drawable_; | |
| 1054 } | |
| 1055 | |
| 1056 void Layer::UpdateDrawsContent(bool has_drawable_content) { | |
| 1057 bool draws_content = has_drawable_content; | |
| 1058 DCHECK(is_drawable_ || !has_drawable_content); | |
| 1059 if (draws_content == draws_content_) | |
| 1060 return; | |
| 1061 | |
| 1062 if (HasDelegatedContent()) { | |
| 1063 // Layers with delegated content need to be treated as if they have as | |
| 1064 // many children as the number of layers they own delegated quads for. | |
| 1065 // Since we don't know this number right now, we choose one that acts like | |
| 1066 // infinity for our purposes. | |
| 1067 AddDrawableDescendants(draws_content ? 1000 : -1000); | |
| 1068 } | |
| 1069 | |
| 1070 if (parent()) | |
| 1071 parent()->AddDrawableDescendants(draws_content ? 1 : -1); | |
| 1072 | |
| 1073 draws_content_ = draws_content; | |
| 1074 SetNeedsCommit(); | |
| 1075 } | |
| 1076 | |
| 1077 int Layer::NumDescendantsThatDrawContent() const { | |
| 1078 return num_descendants_that_draw_content_; | |
| 1079 } | |
| 1080 | |
| 1081 void Layer::SavePaintProperties() { | |
| 1082 DCHECK(layer_tree_host_); | |
| 1083 | |
| 1084 // TODO(reveman): Save all layer properties that we depend on not | |
| 1085 // changing until PushProperties() has been called. crbug.com/231016 | |
| 1086 paint_properties_.bounds = bounds_; | |
| 1087 paint_properties_.source_frame_number = | |
| 1088 layer_tree_host_->source_frame_number(); | |
| 1089 } | |
| 1090 | |
| 1091 bool Layer::Update(ResourceUpdateQueue* queue, | |
| 1092 const OcclusionTracker<Layer>* occlusion) { | |
| 1093 DCHECK(layer_tree_host_); | |
| 1094 DCHECK_EQ(layer_tree_host_->source_frame_number(), | |
| 1095 paint_properties_.source_frame_number) << | |
| 1096 "SavePaintProperties must be called for any layer that is painted."; | |
| 1097 return false; | |
| 1098 } | |
| 1099 | |
| 1100 bool Layer::NeedMoreUpdates() { | |
| 1101 return false; | |
| 1102 } | |
| 1103 | |
| 1104 bool Layer::IsSuitableForGpuRasterization() const { | |
| 1105 return true; | |
| 1106 } | |
| 1107 | |
| 1108 scoped_refptr<base::trace_event::ConvertableToTraceFormat> | |
| 1109 Layer::TakeDebugInfo() { | |
| 1110 if (client_) | |
| 1111 return client_->TakeDebugInfo(); | |
| 1112 else | |
| 1113 return nullptr; | |
| 1114 } | |
| 1115 | |
| 1116 void Layer::SetHasRenderSurface(bool has_render_surface) { | |
| 1117 if (has_render_surface_ == has_render_surface) | |
| 1118 return; | |
| 1119 has_render_surface_ = has_render_surface; | |
| 1120 // We do not need SetNeedsCommit here, since this is only ever called | |
| 1121 // during a commit, from CalculateDrawProperties. | |
| 1122 SetNeedsPushProperties(); | |
| 1123 } | |
| 1124 | |
| 1125 void Layer::CreateRenderSurface() { | |
| 1126 DCHECK(!render_surface_); | |
| 1127 render_surface_ = make_scoped_ptr(new RenderSurface(this)); | |
| 1128 } | |
| 1129 | |
| 1130 void Layer::ClearRenderSurface() { | |
| 1131 render_surface_ = nullptr; | |
| 1132 } | |
| 1133 | |
| 1134 void Layer::ClearRenderSurfaceLayerList() { | |
| 1135 if (render_surface_) | |
| 1136 render_surface_->ClearLayerLists(); | |
| 1137 } | |
| 1138 | |
| 1139 gfx::ScrollOffset Layer::ScrollOffsetForAnimation() const { | |
| 1140 return CurrentScrollOffset(); | |
| 1141 } | |
| 1142 | |
| 1143 // On<Property>Animated is called due to an ongoing accelerated animation. | |
| 1144 // Since this animation is also being run on the compositor thread, there | |
| 1145 // is no need to request a commit to push this value over, so the value is | |
| 1146 // set directly rather than by calling Set<Property>. | |
| 1147 void Layer::OnFilterAnimated(const FilterOperations& filters) { | |
| 1148 filters_ = filters; | |
| 1149 } | |
| 1150 | |
| 1151 void Layer::OnOpacityAnimated(float opacity) { | |
| 1152 opacity_ = opacity; | |
| 1153 } | |
| 1154 | |
| 1155 void Layer::OnTransformAnimated(const gfx::Transform& transform) { | |
| 1156 if (transform_ == transform) | |
| 1157 return; | |
| 1158 transform_ = transform; | |
| 1159 transform_is_invertible_ = transform.IsInvertible(); | |
| 1160 } | |
| 1161 | |
| 1162 void Layer::OnScrollOffsetAnimated(const gfx::ScrollOffset& scroll_offset) { | |
| 1163 // Do nothing. Scroll deltas will be sent from the compositor thread back | |
| 1164 // to the main thread in the same manner as during non-animated | |
| 1165 // compositor-driven scrolling. | |
| 1166 } | |
| 1167 | |
| 1168 void Layer::OnAnimationWaitingForDeletion() { | |
| 1169 // Animations are only deleted during PushProperties. | |
| 1170 SetNeedsPushProperties(); | |
| 1171 } | |
| 1172 | |
| 1173 bool Layer::IsActive() const { | |
| 1174 return true; | |
| 1175 } | |
| 1176 | |
| 1177 bool Layer::AddAnimation(scoped_ptr <Animation> animation) { | |
| 1178 if (!layer_animation_controller_->animation_registrar()) | |
| 1179 return false; | |
| 1180 | |
| 1181 if (animation->target_property() == Animation::SCROLL_OFFSET && | |
| 1182 !layer_animation_controller_->animation_registrar() | |
| 1183 ->supports_scroll_animations()) | |
| 1184 return false; | |
| 1185 | |
| 1186 UMA_HISTOGRAM_BOOLEAN("Renderer.AnimationAddedToOrphanLayer", | |
| 1187 !layer_tree_host_); | |
| 1188 layer_animation_controller_->AddAnimation(animation.Pass()); | |
| 1189 SetNeedsCommit(); | |
| 1190 return true; | |
| 1191 } | |
| 1192 | |
| 1193 void Layer::PauseAnimation(int animation_id, double time_offset) { | |
| 1194 layer_animation_controller_->PauseAnimation( | |
| 1195 animation_id, base::TimeDelta::FromSecondsD(time_offset)); | |
| 1196 SetNeedsCommit(); | |
| 1197 } | |
| 1198 | |
| 1199 void Layer::RemoveAnimation(int animation_id) { | |
| 1200 layer_animation_controller_->RemoveAnimation(animation_id); | |
| 1201 SetNeedsCommit(); | |
| 1202 } | |
| 1203 | |
| 1204 void Layer::RemoveAnimation(int animation_id, | |
| 1205 Animation::TargetProperty property) { | |
| 1206 layer_animation_controller_->RemoveAnimation(animation_id, property); | |
| 1207 SetNeedsCommit(); | |
| 1208 } | |
| 1209 | |
| 1210 void Layer::SetLayerAnimationControllerForTest( | |
| 1211 scoped_refptr<LayerAnimationController> controller) { | |
| 1212 layer_animation_controller_->RemoveValueObserver(this); | |
| 1213 layer_animation_controller_ = controller; | |
| 1214 layer_animation_controller_->AddValueObserver(this); | |
| 1215 SetNeedsCommit(); | |
| 1216 } | |
| 1217 | |
| 1218 bool Layer::HasActiveAnimation() const { | |
| 1219 return layer_animation_controller_->HasActiveAnimation(); | |
| 1220 } | |
| 1221 | |
| 1222 void Layer::AddLayerAnimationEventObserver( | |
| 1223 LayerAnimationEventObserver* animation_observer) { | |
| 1224 layer_animation_controller_->AddEventObserver(animation_observer); | |
| 1225 } | |
| 1226 | |
| 1227 void Layer::RemoveLayerAnimationEventObserver( | |
| 1228 LayerAnimationEventObserver* animation_observer) { | |
| 1229 layer_animation_controller_->RemoveEventObserver(animation_observer); | |
| 1230 } | |
| 1231 | |
| 1232 SimpleEnclosedRegion Layer::VisibleContentOpaqueRegion() const { | |
| 1233 if (contents_opaque()) | |
| 1234 return SimpleEnclosedRegion(visible_content_rect()); | |
| 1235 return SimpleEnclosedRegion(); | |
| 1236 } | |
| 1237 | |
| 1238 ScrollbarLayerInterface* Layer::ToScrollbarLayer() { | |
| 1239 return nullptr; | |
| 1240 } | |
| 1241 | |
| 1242 RenderingStatsInstrumentation* Layer::rendering_stats_instrumentation() const { | |
| 1243 return layer_tree_host_->rendering_stats_instrumentation(); | |
| 1244 } | |
| 1245 | |
| 1246 void Layer::RemoveFromScrollTree() { | |
| 1247 if (scroll_children_.get()) { | |
| 1248 std::set<Layer*> copy = *scroll_children_; | |
| 1249 for (std::set<Layer*>::iterator it = copy.begin(); it != copy.end(); ++it) | |
| 1250 (*it)->SetScrollParent(nullptr); | |
| 1251 } | |
| 1252 | |
| 1253 DCHECK(!scroll_children_); | |
| 1254 SetScrollParent(nullptr); | |
| 1255 } | |
| 1256 | |
| 1257 void Layer::RemoveFromClipTree() { | |
| 1258 if (clip_children_.get()) { | |
| 1259 std::set<Layer*> copy = *clip_children_; | |
| 1260 for (std::set<Layer*>::iterator it = copy.begin(); it != copy.end(); ++it) | |
| 1261 (*it)->SetClipParent(nullptr); | |
| 1262 } | |
| 1263 | |
| 1264 DCHECK(!clip_children_); | |
| 1265 SetClipParent(nullptr); | |
| 1266 } | |
| 1267 | |
| 1268 void Layer::AddDrawableDescendants(int num) { | |
| 1269 DCHECK_GE(num_descendants_that_draw_content_, 0); | |
| 1270 DCHECK_GE(num_descendants_that_draw_content_ + num, 0); | |
| 1271 if (num == 0) | |
| 1272 return; | |
| 1273 num_descendants_that_draw_content_ += num; | |
| 1274 SetNeedsCommit(); | |
| 1275 if (parent()) | |
| 1276 parent()->AddDrawableDescendants(num); | |
| 1277 } | |
| 1278 | |
| 1279 void Layer::RunMicroBenchmark(MicroBenchmark* benchmark) { | |
| 1280 benchmark->RunOnLayer(this); | |
| 1281 } | |
| 1282 | |
| 1283 bool Layer::HasDelegatedContent() const { | |
| 1284 return false; | |
| 1285 } | |
| 1286 | |
| 1287 gfx::Transform Layer::screen_space_transform_from_property_trees( | |
| 1288 const TransformTree& tree) const { | |
| 1289 gfx::Transform xform(1, 0, 0, 1, offset_to_transform_parent().x(), | |
| 1290 offset_to_transform_parent().y()); | |
| 1291 if (transform_tree_index() >= 0) { | |
| 1292 gfx::Transform ssxform = tree.Node(transform_tree_index())->data.to_screen; | |
| 1293 xform.ConcatTransform(ssxform); | |
| 1294 if (should_flatten_transform_from_property_tree_) | |
| 1295 xform.FlattenTo2d(); | |
| 1296 } | |
| 1297 xform.Scale(1.0 / contents_scale_x(), 1.0 / contents_scale_y()); | |
| 1298 return xform; | |
| 1299 } | |
| 1300 | |
| 1301 gfx::Transform Layer::draw_transform_from_property_trees( | |
| 1302 const TransformTree& tree) const { | |
| 1303 const TransformNode* node = tree.Node(transform_tree_index()); | |
| 1304 // TODO(vollick): ultimately we'll need to find this information (whether or | |
| 1305 // not we establish a render surface) somewhere other than the layer. | |
| 1306 const TransformNode* target_node = | |
| 1307 has_render_surface_ ? node : tree.Node(node->data.content_target_id); | |
| 1308 | |
| 1309 gfx::Transform xform; | |
| 1310 const bool owns_non_root_surface = parent() && render_surface(); | |
| 1311 if (!owns_non_root_surface) { | |
| 1312 // If you're not the root, or you don't own a surface, you need to apply | |
| 1313 // your local offset. | |
| 1314 xform = node->data.to_target; | |
| 1315 if (should_flatten_transform_from_property_tree_) | |
| 1316 xform.FlattenTo2d(); | |
| 1317 xform.Translate(offset_to_transform_parent().x(), | |
| 1318 offset_to_transform_parent().y()); | |
| 1319 // A fixed-position layer does not necessarily have the same render target | |
| 1320 // as its transform node. In particular, its transform node may be an | |
| 1321 // ancestor of its render target's transform node. For example, given layer | |
| 1322 // tree R->S->F, suppose F is fixed and S owns a render surface (e.g., say S | |
| 1323 // has opacity 0.9 and both S and F draw content). Then F's transform node | |
| 1324 // is the root node, so the target space transform from that node is defined | |
| 1325 // with respect to the root render surface. But F will render to S's | |
| 1326 // surface, so must apply a change of basis transform to the target space | |
| 1327 // transform from its transform node. | |
| 1328 if (position_constraint_.is_fixed_position()) { | |
| 1329 gfx::Transform tree_target_to_render_target; | |
| 1330 tree.ComputeTransform(node->data.content_target_id, | |
| 1331 render_target()->transform_tree_index(), | |
| 1332 &tree_target_to_render_target); | |
| 1333 xform.ConcatTransform(tree_target_to_render_target); | |
| 1334 } | |
| 1335 } else { | |
| 1336 // Surfaces need to apply their sublayer scale. | |
| 1337 xform.Scale(target_node->data.sublayer_scale.x(), | |
| 1338 target_node->data.sublayer_scale.y()); | |
| 1339 } | |
| 1340 xform.Scale(1.0 / contents_scale_x(), 1.0 / contents_scale_y()); | |
| 1341 return xform; | |
| 1342 } | |
| 1343 | |
| 1344 float Layer::DrawOpacityFromPropertyTrees(const OpacityTree& tree) const { | |
| 1345 if (!render_target()) | |
| 1346 return 0.f; | |
| 1347 | |
| 1348 const OpacityNode* target_node = | |
| 1349 tree.Node(render_target()->opacity_tree_index()); | |
| 1350 const OpacityNode* node = tree.Node(opacity_tree_index()); | |
| 1351 if (node == target_node) | |
| 1352 return 1.f; | |
| 1353 | |
| 1354 float draw_opacity = 1.f; | |
| 1355 while (node != target_node) { | |
| 1356 draw_opacity *= node->data; | |
| 1357 node = tree.parent(node); | |
| 1358 } | |
| 1359 return draw_opacity; | |
| 1360 } | |
| 1361 | |
| 1362 void Layer::SetFrameTimingRequests( | |
| 1363 const std::vector<FrameTimingRequest>& requests) { | |
| 1364 frame_timing_requests_ = requests; | |
| 1365 frame_timing_requests_dirty_ = true; | |
| 1366 SetNeedsCommit(); | |
| 1367 } | |
| 1368 | |
| 1369 void Layer::DidBeginTracing() { | |
| 1370 // We'll be dumping layer trees as part of trace, so make sure | |
| 1371 // PushPropertiesTo() propagates layer debug info to the impl | |
| 1372 // side -- otherwise this won't happen for the the layers that | |
| 1373 // remain unchanged since tracing started. | |
| 1374 SetNeedsPushProperties(); | |
| 1375 } | |
| 1376 | |
| 1377 } // namespace cc | |
| OLD | NEW |
|---|
Chromium Code Reviews
Issue 1057283003:
Remove parts of //cc we aren't using (Closed)
Base URL: git@github.com:domokit/mojo.git@master