cc/blink/web_layer_impl.cc

   1 // Copyright 2014 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/blink/web_layer_impl.h"
   6
   7 #include "base/bind.h"
   8 #include "base/debug/trace_event_impl.h"
   9 #include "base/lazy_instance.h"
  10 #include "base/strings/string_util.h"
  11 #include "base/threading/thread_checker.h"
  12 #include "cc/animation/animation.h"
  13 #include "cc/base/region.h"
  14 #include "cc/base/switches.h"
  15 #include "cc/blink/web_animation_impl.h"
  16 #include "cc/blink/web_blend_mode.h"
  17 #include "cc/blink/web_filter_operations_impl.h"
  18 #include "cc/blink/web_to_cc_animation_delegate_adapter.h"
  19 #include "cc/layers/layer.h"
  20 #include "cc/layers/layer_position_constraint.h"
  21 #include "cc/trees/layer_tree_host.h"
  22 #include "third_party/WebKit/public/platform/WebFloatPoint.h"
  23 #include "third_party/WebKit/public/platform/WebFloatRect.h"
  24 #include "third_party/WebKit/public/platform/WebGraphicsLayerDebugInfo.h"
  25 #include "third_party/WebKit/public/platform/WebLayerClient.h"
  26 #include "third_party/WebKit/public/platform/WebLayerPositionConstraint.h"
  27 #include "third_party/WebKit/public/platform/WebLayerScrollClient.h"
  28 #include "third_party/WebKit/public/platform/WebSize.h"
  29 #include "third_party/skia/include/utils/SkMatrix44.h"
  30 #include "ui/gfx/geometry/rect_conversions.h"
  31 #include "ui/gfx/geometry/vector2d_conversions.h"
  32
  33 using cc::Animation;
  34 using cc::Layer;
  35 using blink::WebLayer;
  36 using blink::WebFloatPoint;
  37 using blink::WebVector;
  38 using blink::WebRect;
  39 using blink::WebSize;
  40 using blink::WebColor;
  41 using blink::WebFilterOperations;
  42
  43 namespace cc_blink {
  44 namespace {
  45
  46 bool g_impl_side_painting_enabled = false;
  47
  48 }  // namespace
  49
  50 WebLayerImpl::WebLayerImpl() : layer_(Layer::Create()) {
  51   web_layer_client_ = nullptr;
  52   layer_->SetLayerClient(this);
  53 }
  54
  55 WebLayerImpl::WebLayerImpl(scoped_refptr<Layer> layer) : layer_(layer) {
  56   web_layer_client_ = nullptr;
  57   layer_->SetLayerClient(this);
  58 }
  59
  60 WebLayerImpl::~WebLayerImpl() {
  61   layer_->ClearRenderSurface();
  62   layer_->set_layer_animation_delegate(nullptr);
  63   web_layer_client_ = nullptr;
  64 }
  65
  66 // static
  67 bool WebLayerImpl::UsingPictureLayer() {
  68   return g_impl_side_painting_enabled;
  69 }
  70
  71 // static
  72 void WebLayerImpl::SetImplSidePaintingEnabled(bool enabled) {
  73   g_impl_side_painting_enabled = enabled;
  74 }
  75
  76 int WebLayerImpl::id() const {
  77   return layer_->id();
  78 }
  79
  80 void WebLayerImpl::invalidateRect(const blink::WebRect& rect) {
  81   layer_->SetNeedsDisplayRect(rect);
  82 }
  83
  84 void WebLayerImpl::invalidate() {
  85   layer_->SetNeedsDisplay();
  86 }
  87
  88 void WebLayerImpl::addChild(WebLayer* child) {
  89   layer_->AddChild(static_cast<WebLayerImpl*>(child)->layer());
  90 }
  91
  92 void WebLayerImpl::insertChild(WebLayer* child, size_t index) {
  93   layer_->InsertChild(static_cast<WebLayerImpl*>(child)->layer(), index);
  94 }
  95
  96 void WebLayerImpl::replaceChild(WebLayer* reference, WebLayer* new_layer) {
  97   layer_->ReplaceChild(static_cast<WebLayerImpl*>(reference)->layer(),
  98                        static_cast<WebLayerImpl*>(new_layer)->layer());
  99 }
 100
 101 void WebLayerImpl::removeFromParent() {
 102   layer_->RemoveFromParent();
 103 }
 104
 105 void WebLayerImpl::removeAllChildren() {
 106   layer_->RemoveAllChildren();
 107 }
 108
 109 void WebLayerImpl::setBounds(const WebSize& size) {
 110   layer_->SetBounds(size);
 111 }
 112
 113 WebSize WebLayerImpl::bounds() const {
 114   return layer_->bounds();
 115 }
 116
 117 void WebLayerImpl::setMasksToBounds(bool masks_to_bounds) {
 118   layer_->SetMasksToBounds(masks_to_bounds);
 119 }
 120
 121 bool WebLayerImpl::masksToBounds() const {
 122   return layer_->masks_to_bounds();
 123 }
 124
 125 void WebLayerImpl::setMaskLayer(WebLayer* maskLayer) {
 126   layer_->SetMaskLayer(
 127       maskLayer ? static_cast<WebLayerImpl*>(maskLayer)->layer() : 0);
 128 }
 129
 130 void WebLayerImpl::setReplicaLayer(WebLayer* replica_layer) {
 131   layer_->SetReplicaLayer(
 132       replica_layer ? static_cast<WebLayerImpl*>(replica_layer)->layer() : 0);
 133 }
 134
 135 void WebLayerImpl::setOpacity(float opacity) {
 136   layer_->SetOpacity(opacity);
 137 }
 138
 139 float WebLayerImpl::opacity() const {
 140   return layer_->opacity();
 141 }
 142
 143 void WebLayerImpl::setBlendMode(blink::WebBlendMode blend_mode) {
 144   layer_->SetBlendMode(BlendModeToSkia(blend_mode));
 145 }
 146
 147 blink::WebBlendMode WebLayerImpl::blendMode() const {
 148   return BlendModeFromSkia(layer_->blend_mode());
 149 }
 150
 151 void WebLayerImpl::setIsRootForIsolatedGroup(bool isolate) {
 152   layer_->SetIsRootForIsolatedGroup(isolate);
 153 }
 154
 155 bool WebLayerImpl::isRootForIsolatedGroup() {
 156   return layer_->is_root_for_isolated_group();
 157 }
 158
 159 void WebLayerImpl::setOpaque(bool opaque) {
 160   layer_->SetContentsOpaque(opaque);
 161 }
 162
 163 bool WebLayerImpl::opaque() const {
 164   return layer_->contents_opaque();
 165 }
 166
 167 void WebLayerImpl::setPosition(const WebFloatPoint& position) {
 168   layer_->SetPosition(position);
 169 }
 170
 171 WebFloatPoint WebLayerImpl::position() const {
 172   return layer_->position();
 173 }
 174
 175 void WebLayerImpl::setTransform(const SkMatrix44& matrix) {
 176   gfx::Transform transform;
 177   transform.matrix() = matrix;
 178   layer_->SetTransform(transform);
 179 }
 180
 181 void WebLayerImpl::setTransformOrigin(const blink::WebFloatPoint3D& point) {
 182   gfx::Point3F gfx_point = point;
 183   layer_->SetTransformOrigin(gfx_point);
 184 }
 185
 186 blink::WebFloatPoint3D WebLayerImpl::transformOrigin() const {
 187   return layer_->transform_origin();
 188 }
 189
 190 SkMatrix44 WebLayerImpl::transform() const {
 191   return layer_->transform().matrix();
 192 }
 193
 194 void WebLayerImpl::setDrawsContent(bool draws_content) {
 195   layer_->SetIsDrawable(draws_content);
 196 }
 197
 198 bool WebLayerImpl::drawsContent() const {
 199   return layer_->DrawsContent();
 200 }
 201
 202 void WebLayerImpl::setShouldFlattenTransform(bool flatten) {
 203   layer_->SetShouldFlattenTransform(flatten);
 204 }
 205
 206 void WebLayerImpl::setRenderingContext(int context) {
 207   layer_->Set3dSortingContextId(context);
 208 }
 209
 210 void WebLayerImpl::setUseParentBackfaceVisibility(
 211     bool use_parent_backface_visibility) {
 212   layer_->set_use_parent_backface_visibility(use_parent_backface_visibility);
 213 }
 214
 215 void WebLayerImpl::setBackgroundColor(WebColor color) {
 216   layer_->SetBackgroundColor(color);
 217 }
 218
 219 WebColor WebLayerImpl::backgroundColor() const {
 220   return layer_->background_color();
 221 }
 222
 223 void WebLayerImpl::setFilters(const WebFilterOperations& filters) {
 224   const WebFilterOperationsImpl& filters_impl =
 225       static_cast<const WebFilterOperationsImpl&>(filters);
 226   layer_->SetFilters(filters_impl.AsFilterOperations());
 227 }
 228
 229 void WebLayerImpl::setBackgroundFilters(const WebFilterOperations& filters) {
 230   const WebFilterOperationsImpl& filters_impl =
 231       static_cast<const WebFilterOperationsImpl&>(filters);
 232   layer_->SetBackgroundFilters(filters_impl.AsFilterOperations());
 233 }
 234
 235 void WebLayerImpl::setAnimationDelegate(
 236     blink::WebCompositorAnimationDelegate* delegate) {
 237   animation_delegate_adapter_.reset(
 238       new WebToCCAnimationDelegateAdapter(delegate));
 239   layer_->set_layer_animation_delegate(animation_delegate_adapter_.get());
 240 }
 241
 242 bool WebLayerImpl::addAnimation(blink::WebCompositorAnimation* animation) {
 243   bool result = layer_->AddAnimation(
 244       static_cast<WebCompositorAnimationImpl*>(animation)->PassAnimation());
 245   delete animation;
 246   return result;
 247 }
 248
 249 void WebLayerImpl::removeAnimation(int animation_id) {
 250   layer_->RemoveAnimation(animation_id);
 251 }
 252
 253 void WebLayerImpl::removeAnimation(
 254     int animation_id,
 255     blink::WebCompositorAnimation::TargetProperty target_property) {
 256   layer_->layer_animation_controller()->RemoveAnimation(
 257       animation_id, static_cast<Animation::TargetProperty>(target_property));
 258 }
 259
 260 void WebLayerImpl::pauseAnimation(int animation_id, double time_offset) {
 261   layer_->PauseAnimation(animation_id, time_offset);
 262 }
 263
 264 bool WebLayerImpl::hasActiveAnimation() {
 265   return layer_->HasActiveAnimation();
 266 }
 267
 268 void WebLayerImpl::setForceRenderSurface(bool force_render_surface) {
 269   layer_->SetForceRenderSurface(force_render_surface);
 270 }
 271
 272 void WebLayerImpl::setScrollPositionDouble(blink::WebDoublePoint position) {
 273   layer_->SetScrollOffset(gfx::ScrollOffset(position.x, position.y));
 274 }
 275
 276 blink::WebDoublePoint WebLayerImpl::scrollPositionDouble() const {
 277   return blink::WebDoublePoint(layer_->scroll_offset().x(),
 278                                layer_->scroll_offset().y());
 279 }
 280
 281 void WebLayerImpl::setScrollClipLayer(WebLayer* clip_layer) {
 282   if (!clip_layer) {
 283     layer_->SetScrollClipLayerId(Layer::INVALID_ID);
 284     return;
 285   }
 286   layer_->SetScrollClipLayerId(clip_layer->id());
 287 }
 288
 289 bool WebLayerImpl::scrollable() const {
 290   return layer_->scrollable();
 291 }
 292
 293 void WebLayerImpl::setUserScrollable(bool horizontal, bool vertical) {
 294   layer_->SetUserScrollable(horizontal, vertical);
 295 }
 296
 297 bool WebLayerImpl::userScrollableHorizontal() const {
 298   return layer_->user_scrollable_horizontal();
 299 }
 300
 301 bool WebLayerImpl::userScrollableVertical() const {
 302   return layer_->user_scrollable_vertical();
 303 }
 304
 305 void WebLayerImpl::setHaveWheelEventHandlers(bool have_wheel_event_handlers) {
 306   layer_->SetHaveWheelEventHandlers(have_wheel_event_handlers);
 307 }
 308
 309 bool WebLayerImpl::haveWheelEventHandlers() const {
 310   return layer_->have_wheel_event_handlers();
 311 }
 312
 313 void WebLayerImpl::setHaveScrollEventHandlers(bool have_scroll_event_handlers) {
 314   layer_->SetHaveScrollEventHandlers(have_scroll_event_handlers);
 315 }
 316
 317 bool WebLayerImpl::haveScrollEventHandlers() const {
 318   return layer_->have_scroll_event_handlers();
 319 }
 320
 321 void WebLayerImpl::setShouldScrollOnMainThread(
 322     bool should_scroll_on_main_thread) {
 323   layer_->SetShouldScrollOnMainThread(should_scroll_on_main_thread);
 324 }
 325
 326 bool WebLayerImpl::shouldScrollOnMainThread() const {
 327   return layer_->should_scroll_on_main_thread();
 328 }
 329
 330 void WebLayerImpl::setNonFastScrollableRegion(const WebVector<WebRect>& rects) {
 331   cc::Region region;
 332   for (size_t i = 0; i < rects.size(); ++i)
 333     region.Union(rects[i]);
 334   layer_->SetNonFastScrollableRegion(region);
 335 }
 336
 337 WebVector<WebRect> WebLayerImpl::nonFastScrollableRegion() const {
 338   size_t num_rects = 0;
 339   for (cc::Region::Iterator region_rects(layer_->non_fast_scrollable_region());
 340        region_rects.has_rect();
 341        region_rects.next())
 342     ++num_rects;
 343
 344   WebVector<WebRect> result(num_rects);
 345   size_t i = 0;
 346   for (cc::Region::Iterator region_rects(layer_->non_fast_scrollable_region());
 347        region_rects.has_rect();
 348        region_rects.next()) {
 349     result[i] = region_rects.rect();
 350     ++i;
 351   }
 352   return result;
 353 }
 354
 355 void WebLayerImpl::setTouchEventHandlerRegion(const WebVector<WebRect>& rects) {
 356   cc::Region region;
 357   for (size_t i = 0; i < rects.size(); ++i)
 358     region.Union(rects[i]);
 359   layer_->SetTouchEventHandlerRegion(region);
 360 }
 361
 362 WebVector<WebRect> WebLayerImpl::touchEventHandlerRegion() const {
 363   size_t num_rects = 0;
 364   for (cc::Region::Iterator region_rects(layer_->touch_event_handler_region());
 365        region_rects.has_rect();
 366        region_rects.next())
 367     ++num_rects;
 368
 369   WebVector<WebRect> result(num_rects);
 370   size_t i = 0;
 371   for (cc::Region::Iterator region_rects(layer_->touch_event_handler_region());
 372        region_rects.has_rect();
 373        region_rects.next()) {
 374     result[i] = region_rects.rect();
 375     ++i;
 376   }
 377   return result;
 378 }
 379
 380 void WebLayerImpl::setIsContainerForFixedPositionLayers(bool enable) {
 381   layer_->SetIsContainerForFixedPositionLayers(enable);
 382 }
 383
 384 bool WebLayerImpl::isContainerForFixedPositionLayers() const {
 385   return layer_->IsContainerForFixedPositionLayers();
 386 }
 387
 388 static blink::WebLayerPositionConstraint ToWebLayerPositionConstraint(
 389     const cc::LayerPositionConstraint& constraint) {
 390   blink::WebLayerPositionConstraint web_constraint;
 391   web_constraint.isFixedPosition = constraint.is_fixed_position();
 392   web_constraint.isFixedToRightEdge = constraint.is_fixed_to_right_edge();
 393   web_constraint.isFixedToBottomEdge = constraint.is_fixed_to_bottom_edge();
 394   return web_constraint;
 395 }
 396
 397 static cc::LayerPositionConstraint ToLayerPositionConstraint(
 398     const blink::WebLayerPositionConstraint& web_constraint) {
 399   cc::LayerPositionConstraint constraint;
 400   constraint.set_is_fixed_position(web_constraint.isFixedPosition);
 401   constraint.set_is_fixed_to_right_edge(web_constraint.isFixedToRightEdge);
 402   constraint.set_is_fixed_to_bottom_edge(web_constraint.isFixedToBottomEdge);
 403   return constraint;
 404 }
 405
 406 void WebLayerImpl::setPositionConstraint(
 407     const blink::WebLayerPositionConstraint& constraint) {
 408   layer_->SetPositionConstraint(ToLayerPositionConstraint(constraint));
 409 }
 410
 411 blink::WebLayerPositionConstraint WebLayerImpl::positionConstraint() const {
 412   return ToWebLayerPositionConstraint(layer_->position_constraint());
 413 }
 414
 415 void WebLayerImpl::setScrollClient(blink::WebLayerScrollClient* scroll_client) {
 416   if (scroll_client) {
 417     layer_->set_did_scroll_callback(
 418         base::Bind(&blink::WebLayerScrollClient::didScroll,
 419                    base::Unretained(scroll_client)));
 420   } else {
 421     layer_->set_did_scroll_callback(base::Closure());
 422   }
 423 }
 424
 425 bool WebLayerImpl::isOrphan() const {
 426   return !layer_->layer_tree_host();
 427 }
 428
 429 void WebLayerImpl::setWebLayerClient(blink::WebLayerClient* client) {
 430   web_layer_client_ = client;
 431 }
 432
 433 class TracedDebugInfo : public base::debug::ConvertableToTraceFormat {
 434  public:
 435   // This object takes ownership of the debug_info object.
 436   explicit TracedDebugInfo(blink::WebGraphicsLayerDebugInfo* debug_info)
 437       : debug_info_(debug_info) {}
 438   void AppendAsTraceFormat(std::string* out) const override {
 439     DCHECK(thread_checker_.CalledOnValidThread());
 440     blink::WebString web_string;
 441     debug_info_->appendAsTraceFormat(&web_string);
 442     out->append(web_string.utf8());
 443   }
 444
 445  private:
 446   ~TracedDebugInfo() override {}
 447   scoped_ptr<blink::WebGraphicsLayerDebugInfo> debug_info_;
 448   base::ThreadChecker thread_checker_;
 449 };
 450
 451 scoped_refptr<base::debug::ConvertableToTraceFormat>
 452 WebLayerImpl::TakeDebugInfo() {
 453   if (!web_layer_client_)
 454     return nullptr;
 455   blink::WebGraphicsLayerDebugInfo* debug_info =
 456       web_layer_client_->takeDebugInfoFor(this);
 457
 458   if (debug_info)
 459     return new TracedDebugInfo(debug_info);
 460   else
 461     return nullptr;
 462 }
 463
 464 void WebLayerImpl::setScrollParent(blink::WebLayer* parent) {
 465   cc::Layer* scroll_parent = nullptr;
 466   if (parent)
 467     scroll_parent = static_cast<WebLayerImpl*>(parent)->layer();
 468   layer_->SetScrollParent(scroll_parent);
 469 }
 470
 471 void WebLayerImpl::setClipParent(blink::WebLayer* parent) {
 472   cc::Layer* clip_parent = nullptr;
 473   if (parent)
 474     clip_parent = static_cast<WebLayerImpl*>(parent)->layer();
 475   layer_->SetClipParent(clip_parent);
 476 }
 477
 478 Layer* WebLayerImpl::layer() const {
 479   return layer_.get();
 480 }
 481
 482 }  // namespace cc_blink