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