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      1 // Copyright 2013 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 "webkit/child/webkitplatformsupport_child_impl.h"
      6 
      7 #include "base/memory/discardable_memory.h"
      8 #include "third_party/WebKit/public/web/WebInputEvent.h"
      9 #include "webkit/child/fling_curve_configuration.h"
     10 #include "webkit/child/web_discardable_memory_impl.h"
     11 #include "webkit/child/webthread_impl.h"
     12 #include "webkit/child/worker_task_runner.h"
     13 
     14 #if defined(OS_ANDROID)
     15 #include "webkit/child/fling_animator_impl_android.h"
     16 #endif
     17 
     18 using WebKit::WebFallbackThemeEngine;
     19 using WebKit::WebThemeEngine;
     20 
     21 namespace webkit_glue {
     22 
     23 WebKitPlatformSupportChildImpl::WebKitPlatformSupportChildImpl()
     24     : current_thread_slot_(&DestroyCurrentThread),
     25       fling_curve_configuration_(new FlingCurveConfiguration) {}
     26 
     27 WebKitPlatformSupportChildImpl::~WebKitPlatformSupportChildImpl() {}
     28 
     29 WebThemeEngine* WebKitPlatformSupportChildImpl::themeEngine() {
     30   return &native_theme_engine_;
     31 }
     32 
     33 WebFallbackThemeEngine* WebKitPlatformSupportChildImpl::fallbackThemeEngine() {
     34   return &fallback_theme_engine_;
     35 }
     36 
     37 void WebKitPlatformSupportChildImpl::SetFlingCurveParameters(
     38     const std::vector<float>& new_touchpad,
     39     const std::vector<float>& new_touchscreen) {
     40   fling_curve_configuration_->SetCurveParameters(new_touchpad, new_touchscreen);
     41 }
     42 
     43 WebKit::WebGestureCurve*
     44 WebKitPlatformSupportChildImpl::createFlingAnimationCurve(
     45     int device_source,
     46     const WebKit::WebFloatPoint& velocity,
     47     const WebKit::WebSize& cumulative_scroll) {
     48 #if defined(OS_ANDROID)
     49   return FlingAnimatorImpl::CreateAndroidGestureCurve(velocity,
     50                                                       cumulative_scroll);
     51 #endif
     52 
     53   if (device_source == WebKit::WebGestureEvent::Touchscreen)
     54     return fling_curve_configuration_->CreateForTouchScreen(velocity,
     55                                                             cumulative_scroll);
     56 
     57   return fling_curve_configuration_->CreateForTouchPad(velocity,
     58                                                        cumulative_scroll);
     59 }
     60 
     61 WebKit::WebThread* WebKitPlatformSupportChildImpl::createThread(
     62     const char* name) {
     63   return new WebThreadImpl(name);
     64 }
     65 
     66 WebKit::WebThread* WebKitPlatformSupportChildImpl::currentThread() {
     67   WebThreadImplForMessageLoop* thread =
     68       static_cast<WebThreadImplForMessageLoop*>(current_thread_slot_.Get());
     69   if (thread)
     70     return (thread);
     71 
     72   scoped_refptr<base::MessageLoopProxy> message_loop =
     73       base::MessageLoopProxy::current();
     74   if (!message_loop.get())
     75     return NULL;
     76 
     77   thread = new WebThreadImplForMessageLoop(message_loop.get());
     78   current_thread_slot_.Set(thread);
     79   return thread;
     80 }
     81 
     82 void WebKitPlatformSupportChildImpl::didStartWorkerRunLoop(
     83     const WebKit::WebWorkerRunLoop& runLoop) {
     84   WorkerTaskRunner* worker_task_runner = WorkerTaskRunner::Instance();
     85   worker_task_runner->OnWorkerRunLoopStarted(runLoop);
     86 }
     87 
     88 void WebKitPlatformSupportChildImpl::didStopWorkerRunLoop(
     89     const WebKit::WebWorkerRunLoop& runLoop) {
     90   WorkerTaskRunner* worker_task_runner = WorkerTaskRunner::Instance();
     91   worker_task_runner->OnWorkerRunLoopStopped(runLoop);
     92 }
     93 
     94 WebKit::WebDiscardableMemory*
     95 WebKitPlatformSupportChildImpl::allocateAndLockDiscardableMemory(size_t bytes) {
     96   if (!base::DiscardableMemory::Supported())
     97     return NULL;
     98   scoped_ptr<WebDiscardableMemoryImpl> discardable(
     99       new WebDiscardableMemoryImpl());
    100   if (discardable->InitializeAndLock(bytes))
    101     return discardable.release();
    102   return NULL;
    103 }
    104 
    105 // static
    106 void WebKitPlatformSupportChildImpl::DestroyCurrentThread(void* thread) {
    107   WebThreadImplForMessageLoop* impl =
    108       static_cast<WebThreadImplForMessageLoop*>(thread);
    109   delete impl;
    110 }
    111 
    112 }  // namespace webkit_glue
    113