content/renderer/compositor_bindings/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 "content/renderer/compositor_bindings/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/layers/layer.h"
  16 #include "cc/layers/layer_position_constraint.h"
  17 #include "cc/trees/layer_tree_host.h"
  18 #include "content/renderer/compositor_bindings/web_animation_impl.h"
  19 #include "content/renderer/compositor_bindings/web_blend_mode.h"
  20 #include "content/renderer/compositor_bindings/web_filter_operations_impl.h"
  21 #include "content/renderer/compositor_bindings/web_to_cc_animation_delegate_adapter.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
  31 using cc::Animation;
  32 using cc::Layer;
  33 using blink::WebLayer;
  34 using blink::WebFloatPoint;
  35 using blink::WebVector;
  36 using blink::WebRect;
  37 using blink::WebSize;
  38 using blink::WebColor;
  39 using blink::WebFilterOperations;
  40
  41 namespace content {
  42 namespace {
  43
  44 bool g_impl_side_painting_enabled = false;
  45
  46 }  // namespace
  47
  48 WebLayerImpl::WebLayerImpl() : layer_(Layer::Create()) {
  49   web_layer_client_ = NULL;
  50   layer_->SetLayerClient(this);
  51 }
  52
  53 WebLayerImpl::WebLayerImpl(scoped_refptr<Layer> layer) : layer_(layer) {
  54   web_layer_client_ = NULL;
  55   layer_->SetLayerClient(this);
  56 }
  57
  58 WebLayerImpl::~WebLayerImpl() {
  59   layer_->ClearRenderSurface();
  60   layer_->set_layer_animation_delegate(NULL);
  61   web_layer_client_ = NULL;
  62 }
  63
  64 // static
  65 bool WebLayerImpl::UsingPictureLayer() {
  66   return g_impl_side_painting_enabled;
  67 }
  68
  69 // static
  70 void WebLayerImpl::SetImplSidePaintingEnabled(bool enabled) {
  71   g_impl_side_painting_enabled = enabled;
  72 }
  73
  74 int WebLayerImpl::id() const {
  75   return layer_->id();
  76 }
  77
  78 void WebLayerImpl::invalidateRect(const blink::WebFloatRect& rect) {
  79   layer_->SetNeedsDisplayRect(rect);
  80 }
  81
  82 void WebLayerImpl::invalidate() {
  83   layer_->SetNeedsDisplay();
  84 }
  85
  86 void WebLayerImpl::addChild(WebLayer* child) {
  87   layer_->AddChild(static_cast<WebLayerImpl*>(child)->layer());
  88 }
  89
  90 void WebLayerImpl::insertChild(WebLayer* child, size_t index) {
  91   layer_->InsertChild(static_cast<WebLayerImpl*>(child)->layer(), index);
  92 }
  93
  94 void WebLayerImpl::replaceChild(WebLayer* reference, WebLayer* new_layer) {
  95   layer_->ReplaceChild(static_cast<WebLayerImpl*>(reference)->layer(),
  96                        static_cast<WebLayerImpl*>(new_layer)->layer());
  97 }
  98
  99 void WebLayerImpl::removeFromParent() {
 100   layer_->RemoveFromParent();
 101 }
 102
 103 void WebLayerImpl::removeAllChildren() {
 104   layer_->RemoveAllChildren();
 105 }
 106
 107 void WebLayerImpl::setBounds(const WebSize& size) { layer_->SetBounds(size); }
 108
 109 WebSize WebLayerImpl::bounds() const {
 110   return layer_->bounds();
 111 }
 112
 113 void WebLayerImpl::setMasksToBounds(bool masks_to_bounds) {
 114   layer_->SetMasksToBounds(masks_to_bounds);
 115 }
 116
 117 bool WebLayerImpl::masksToBounds() const {
 118   return layer_->masks_to_bounds();
 119 }
 120
 121 void WebLayerImpl::setMaskLayer(WebLayer* maskLayer) {
 122   layer_->SetMaskLayer(
 123       maskLayer ? static_cast<WebLayerImpl*>(maskLayer)->layer() : 0);
 124 }
 125
 126 void WebLayerImpl::setReplicaLayer(WebLayer* replica_layer) {
 127   layer_->SetReplicaLayer(
 128       replica_layer ? static_cast<WebLayerImpl*>(replica_layer)->layer() : 0);
 129 }
 130
 131 void WebLayerImpl::setOpacity(float opacity) {
 132   layer_->SetOpacity(opacity);
 133 }
 134
 135 float WebLayerImpl::opacity() const {
 136   return layer_->opacity();
 137 }
 138
 139 void WebLayerImpl::setBlendMode(blink::WebBlendMode blend_mode) {
 140   layer_->SetBlendMode(BlendModeToSkia(blend_mode));
 141 }
 142
 143 blink::WebBlendMode WebLayerImpl::blendMode() const {
 144   return BlendModeFromSkia(layer_->blend_mode());
 145 }
 146
 147 void WebLayerImpl::setIsRootForIsolatedGroup(bool isolate) {
 148   layer_->SetIsRootForIsolatedGroup(isolate);
 149 }
 150
 151 bool WebLayerImpl::isRootForIsolatedGroup() {
 152   return layer_->is_root_for_isolated_group();
 153 }
 154
 155 void WebLayerImpl::setOpaque(bool opaque) {
 156   layer_->SetContentsOpaque(opaque);
 157 }
 158
 159 bool WebLayerImpl::opaque() const {
 160   return layer_->contents_opaque();
 161 }
 162
 163 void WebLayerImpl::setPosition(const WebFloatPoint& position) {
 164   layer_->SetPosition(position);
 165 }
 166
 167 WebFloatPoint WebLayerImpl::position() const {
 168   return layer_->position();
 169 }
 170
 171 void WebLayerImpl::setTransform(const SkMatrix44& matrix) {
 172   gfx::Transform transform;
 173   transform.matrix() = matrix;
 174   layer_->SetTransform(transform);
 175 }
 176
 177 void WebLayerImpl::setTransformOrigin(const blink::WebFloatPoint3D& point) {
 178   gfx::Point3F gfx_point = point;
 179   layer_->SetTransformOrigin(gfx_point);
 180 }
 181
 182 blink::WebFloatPoint3D WebLayerImpl::transformOrigin() const {
 183   return layer_->transform_origin();
 184 }
 185
 186 void WebLayerImpl::setAnchorPoint(const blink::WebFloatPoint&) {}
 187
 188 blink::WebFloatPoint WebLayerImpl::anchorPoint() const {
 189   return blink::WebFloatPoint();
 190 }
 191
 192 void WebLayerImpl::setAnchorPointZ(float) {}
 193
 194 float WebLayerImpl::anchorPointZ() const {
 195   return 0.f;
 196 }
 197
 198 SkMatrix44 WebLayerImpl::transform() const {
 199   return layer_->transform().matrix();
 200 }
 201
 202 void WebLayerImpl::setDrawsContent(bool draws_content) {
 203   layer_->SetIsDrawable(draws_content);
 204 }
 205
 206 bool WebLayerImpl::drawsContent() const {
 207   return layer_->DrawsContent();
 208 }
 209
 210 void WebLayerImpl::setShouldFlattenTransform(bool flatten) {
 211   layer_->SetShouldFlattenTransform(flatten);
 212 }
 213
 214 void WebLayerImpl::setRenderingContext(int context) {
 215   layer_->Set3dSortingContextId(context);
 216 }
 217
 218 void WebLayerImpl::setUseParentBackfaceVisibility(
 219     bool use_parent_backface_visibility) {
 220   layer_->set_use_parent_backface_visibility(use_parent_backface_visibility);
 221 }
 222
 223 void WebLayerImpl::setBackgroundColor(WebColor color) {
 224   layer_->SetBackgroundColor(color);
 225 }
 226
 227 WebColor WebLayerImpl::backgroundColor() const {
 228   return layer_->background_color();
 229 }
 230
 231 void WebLayerImpl::setFilters(const WebFilterOperations& filters) {
 232   const WebFilterOperationsImpl& filters_impl =
 233       static_cast<const WebFilterOperationsImpl&>(filters);
 234   layer_->SetFilters(filters_impl.AsFilterOperations());
 235 }
 236
 237 void WebLayerImpl::setBackgroundFilters(const WebFilterOperations& filters) {
 238   const WebFilterOperationsImpl& filters_impl =
 239       static_cast<const WebFilterOperationsImpl&>(filters);
 240   layer_->SetBackgroundFilters(filters_impl.AsFilterOperations());
 241 }
 242
 243 void WebLayerImpl::setAnimationDelegate(
 244     blink::WebCompositorAnimationDelegate* delegate) {
 245   animation_delegate_adapter_.reset(
 246       new WebToCCAnimationDelegateAdapter(delegate));
 247   layer_->set_layer_animation_delegate(animation_delegate_adapter_.get());
 248 }
 249
 250 bool WebLayerImpl::addAnimation(blink::WebCompositorAnimation* animation) {
 251   bool result = layer_->AddAnimation(
 252       static_cast<WebCompositorAnimationImpl*>(animation)->PassAnimation());
 253   delete animation;
 254   return result;
 255 }
 256
 257 void WebLayerImpl::removeAnimation(int animation_id) {
 258   layer_->RemoveAnimation(animation_id);
 259 }
 260
 261 void WebLayerImpl::removeAnimation(
 262     int animation_id,
 263     blink::WebCompositorAnimation::TargetProperty target_property) {
 264   layer_->layer_animation_controller()->RemoveAnimation(
 265       animation_id, static_cast<Animation::TargetProperty>(target_property));
 266 }
 267
 268 void WebLayerImpl::pauseAnimation(int animation_id, double time_offset) {
 269   layer_->PauseAnimation(animation_id, time_offset);
 270 }
 271
 272 bool WebLayerImpl::hasActiveAnimation() {
 273   return layer_->HasActiveAnimation();
 274 }
 275
 276 void WebLayerImpl::setForceRenderSurface(bool force_render_surface) {
 277   layer_->SetForceRenderSurface(force_render_surface);
 278 }
 279
 280 void WebLayerImpl::setScrollPosition(blink::WebPoint position) {
 281   layer_->SetScrollOffset(gfx::Point(position).OffsetFromOrigin());
 282 }
 283
 284 blink::WebPoint WebLayerImpl::scrollPosition() const {
 285   return gfx::PointAtOffsetFromOrigin(layer_->scroll_offset());
 286 }
 287
 288 void WebLayerImpl::setScrollClipLayer(WebLayer* clip_layer) {
 289   if (!clip_layer) {
 290     layer_->SetScrollClipLayerId(Layer::INVALID_ID);
 291     return;
 292   }
 293   layer_->SetScrollClipLayerId(clip_layer->id());
 294 }
 295
 296 bool WebLayerImpl::scrollable() const {
 297   return layer_->scrollable();
 298 }
 299
 300 void WebLayerImpl::setUserScrollable(bool horizontal, bool vertical) {
 301   layer_->SetUserScrollable(horizontal, vertical);
 302 }
 303
 304 bool WebLayerImpl::userScrollableHorizontal() const {
 305   return layer_->user_scrollable_horizontal();
 306 }
 307
 308 bool WebLayerImpl::userScrollableVertical() const {
 309   return layer_->user_scrollable_vertical();
 310 }
 311
 312 void WebLayerImpl::setHaveWheelEventHandlers(bool have_wheel_event_handlers) {
 313   layer_->SetHaveWheelEventHandlers(have_wheel_event_handlers);
 314 }
 315
 316 bool WebLayerImpl::haveWheelEventHandlers() const {
 317   return layer_->have_wheel_event_handlers();
 318 }
 319
 320 void WebLayerImpl::setHaveScrollEventHandlers(bool have_scroll_event_handlers) {
 321   layer_->SetHaveScrollEventHandlers(have_scroll_event_handlers);
 322 }
 323
 324 bool WebLayerImpl::haveScrollEventHandlers() const {
 325   return layer_->have_scroll_event_handlers();
 326 }
 327
 328 void WebLayerImpl::setShouldScrollOnMainThread(
 329     bool should_scroll_on_main_thread) {
 330   layer_->SetShouldScrollOnMainThread(should_scroll_on_main_thread);
 331 }
 332
 333 bool WebLayerImpl::shouldScrollOnMainThread() const {
 334   return layer_->should_scroll_on_main_thread();
 335 }
 336
 337 void WebLayerImpl::setNonFastScrollableRegion(const WebVector<WebRect>& rects) {
 338   cc::Region region;
 339   for (size_t i = 0; i < rects.size(); ++i)
 340     region.Union(rects[i]);
 341   layer_->SetNonFastScrollableRegion(region);
 342 }
 343
 344 WebVector<WebRect> WebLayerImpl::nonFastScrollableRegion() const {
 345   size_t num_rects = 0;
 346   for (cc::Region::Iterator region_rects(layer_->non_fast_scrollable_region());
 347        region_rects.has_rect();
 348        region_rects.next())
 349     ++num_rects;
 350
 351   WebVector<WebRect> result(num_rects);
 352   size_t i = 0;
 353   for (cc::Region::Iterator region_rects(layer_->non_fast_scrollable_region());
 354        region_rects.has_rect();
 355        region_rects.next()) {
 356     result[i] = region_rects.rect();
 357     ++i;
 358   }
 359   return result;
 360 }
 361
 362 void WebLayerImpl::setTouchEventHandlerRegion(const WebVector<WebRect>& rects) {
 363   cc::Region region;
 364   for (size_t i = 0; i < rects.size(); ++i)
 365     region.Union(rects[i]);
 366   layer_->SetTouchEventHandlerRegion(region);
 367 }
 368
 369 WebVector<WebRect> WebLayerImpl::touchEventHandlerRegion() const {
 370   size_t num_rects = 0;
 371   for (cc::Region::Iterator region_rects(layer_->touch_event_handler_region());
 372        region_rects.has_rect();
 373        region_rects.next())
 374     ++num_rects;
 375
 376   WebVector<WebRect> result(num_rects);
 377   size_t i = 0;
 378   for (cc::Region::Iterator region_rects(layer_->touch_event_handler_region());
 379        region_rects.has_rect();
 380        region_rects.next()) {
 381     result[i] = region_rects.rect();
 382     ++i;
 383   }
 384   return result;
 385 }
 386
 387 void WebLayerImpl::setIsContainerForFixedPositionLayers(bool enable) {
 388   layer_->SetIsContainerForFixedPositionLayers(enable);
 389 }
 390
 391 bool WebLayerImpl::isContainerForFixedPositionLayers() const {
 392   return layer_->IsContainerForFixedPositionLayers();
 393 }
 394
 395 static blink::WebLayerPositionConstraint ToWebLayerPositionConstraint(
 396     const cc::LayerPositionConstraint& constraint) {
 397   blink::WebLayerPositionConstraint web_constraint;
 398   web_constraint.isFixedPosition = constraint.is_fixed_position();
 399   web_constraint.isFixedToRightEdge = constraint.is_fixed_to_right_edge();
 400   web_constraint.isFixedToBottomEdge = constraint.is_fixed_to_bottom_edge();
 401   return web_constraint;
 402 }
 403
 404 static cc::LayerPositionConstraint ToLayerPositionConstraint(
 405     const blink::WebLayerPositionConstraint& web_constraint) {
 406   cc::LayerPositionConstraint constraint;
 407   constraint.set_is_fixed_position(web_constraint.isFixedPosition);
 408   constraint.set_is_fixed_to_right_edge(web_constraint.isFixedToRightEdge);
 409   constraint.set_is_fixed_to_bottom_edge(web_constraint.isFixedToBottomEdge);
 410   return constraint;
 411 }
 412
 413 void WebLayerImpl::setPositionConstraint(
 414     const blink::WebLayerPositionConstraint& constraint) {
 415   layer_->SetPositionConstraint(ToLayerPositionConstraint(constraint));
 416 }
 417
 418 blink::WebLayerPositionConstraint WebLayerImpl::positionConstraint() const {
 419   return ToWebLayerPositionConstraint(layer_->position_constraint());
 420 }
 421
 422 void WebLayerImpl::setScrollClient(blink::WebLayerScrollClient* scroll_client) {
 423   if (scroll_client) {
 424     layer_->set_did_scroll_callback(
 425         base::Bind(&blink::WebLayerScrollClient::didScroll,
 426                    base::Unretained(scroll_client)));
 427   } else {
 428     layer_->set_did_scroll_callback(base::Closure());
 429   }
 430 }
 431
 432 bool WebLayerImpl::isOrphan() const {
 433   return !layer_->layer_tree_host();
 434 }
 435
 436 void WebLayerImpl::setWebLayerClient(blink::WebLayerClient* client) {
 437   web_layer_client_ = client;
 438 }
 439
 440 class TracedDebugInfo : public base::debug::ConvertableToTraceFormat {
 441  public:
 442   // This object takes ownership of the debug_info object.
 443   explicit TracedDebugInfo(blink::WebGraphicsLayerDebugInfo* debug_info)
 444       : debug_info_(debug_info) {}
 445   virtual void AppendAsTraceFormat(std::string* out) const OVERRIDE {
 446     DCHECK(thread_checker_.CalledOnValidThread());
 447     blink::WebString web_string;
 448     debug_info_->appendAsTraceFormat(&web_string);
 449     out->append(web_string.utf8());
 450   }
 451
 452  private:
 453   virtual ~TracedDebugInfo() {}
 454   scoped_ptr<blink::WebGraphicsLayerDebugInfo> debug_info_;
 455   base::ThreadChecker thread_checker_;
 456 };
 457
 458 scoped_refptr<base::debug::ConvertableToTraceFormat>
 459 WebLayerImpl::TakeDebugInfo() {
 460   if (!web_layer_client_)
 461     return NULL;
 462   blink::WebGraphicsLayerDebugInfo* debug_info =
 463       web_layer_client_->takeDebugInfoFor(this);
 464
 465   if (debug_info)
 466     return new TracedDebugInfo(debug_info);
 467   else
 468     return NULL;
 469 }
 470
 471 void WebLayerImpl::setScrollParent(blink::WebLayer* parent) {
 472   cc::Layer* scroll_parent = NULL;
 473   if (parent)
 474     scroll_parent = static_cast<WebLayerImpl*>(parent)->layer();
 475   layer_->SetScrollParent(scroll_parent);
 476 }
 477
 478 void WebLayerImpl::setClipParent(blink::WebLayer* parent) {
 479   cc::Layer* clip_parent = NULL;
 480   if (parent)
 481     clip_parent = static_cast<WebLayerImpl*>(parent)->layer();
 482   layer_->SetClipParent(clip_parent);
 483 }
 484
 485 Layer* WebLayerImpl::layer() const {
 486   return layer_.get();
 487 }
 488
 489 }  // namespace content
 490