submitted to the GPU driver, thus ensuring the synchronization of WebGL content and DrawGL. For details about the synchronization point mechanism, see the article ChromiumGraphics: principles and implementation analysis of the synchronization mechanism between GPU clients.AndroidWebViewShell also supports hardware rendering Mode
WebView Shell is built on the core class AwContents. AwContents can basically be equivalent to android. webkit. WebView. In the Ch
# OVERVIEW
I believe you have noticed that in the latest Android 4.4 Kitkat version, the WebView implementation based on Android WebKit was replaced with the WebView implementation based on Chromium. In the previous chapter, the author also introduced that the chrome-based WebView implementation will become the default implementation method on the Android system. I have always been looking forward to this major change, and now it has actually happened
can be saved by itself.
The parameters of a task (also a context) can be saved by the closure.
The closure has many attempts in C ++. Chromium particularly describes the design of tr1: bind. We will not explain the thread implementation of Chromium here.
Chromium Process Architecture
Logically, Chromium regards th
MessagePumpForUI DoRunLoopOnce. Its implementation code is as follows:
static void DoRunLoopOnce(JNIEnv* env, jobject obj, jlong native_delegate, jlong delayed_scheduled_time_ticks) { base::MessagePump::Delegate* delegate = reinterpret_cast
The DoRunLoopOnce method gives the C ++ layer MessageLoop the opportunity to process its own asynchronous tasks, including delayed tasks and Idle tasks.
Now, with the implementation of MessagePumpForUI and SystemMessageHandler, the
delayed_scheduled_time_ticks) { base::MessagePump::Delegate* delegate = reinterpret_cast
(native_delegate); bool did_work =delegate->DoWork(); base::TimeTicksnext_delayed_work_time; did_work |=delegate->DoDelayedWork(next_delayed_work_time); if(!next_delayed_work_time.is_null()) { if(delayed_scheduled_time_ticks == 0 || next_delayed_work_time
The DoRunLoopOnce method gives the C ++ layer MessageLoop the opportunity to process its own asynchronous tasks, including de
Chromium Graphics: Principle and Implementation of the synchronization mechanism between GPU clients-Part I, chromium-part
Abstract: The GPU process architecture in Chromium allows multiple GPU clients to access the GPU service at the same time, and there may be data dependencies between GPU clients, therefore, a synchronization mechanism must be provided to ensu
An important update for Android KitKat is that WebView uses the Chromium/blink rendering engine, which briefly describes the main features of the new version of WebView, where further improvements are needed, and the code structure of WebView.WebView Past LifeWebView is a very important system component on the Android platform that embeds a widget view of a display Web page into the application and provides a set of API interfaces that allow developer
delayed_scheduled_time_ticks) { Base::messagepump::D elegate* Delegate = reinterpret_castThe Dorunlooponce method gives the C + + layer Messageloop the opportunity to handle its own asynchronous tasks, including deferred tasks and idle tasks.At this point, through the implementation of Messagepumpforui and Systemmessagehandler, the chromium system can be seamlessly integrated into the Android message loop on the main thread,SummaryThe handler c
method dorunlooponce defined in Messagepumpforui. In fact the modern codes such as the following:static void Dorunlooponce (jnienv* env, Jobject obj, Jlong native_delegate, Jlong delayed_scheduled_time_ticks) { Base::messagepump::D elegate* Delegate = reinterpret_castThe Dorunlooponce method gives the C + + layer Messageloop the opportunity to handle its own asynchronous tasks, including deferred tasks and idle tasks.At this point, through the implementation of Messagepumpforui and System
be computed through network services, to avoid extra bandwidth resources. It is similar to WebGL, WebAudio and other technologies that solve problems, but the approaches are different because they are standards, while NativeClient technology is proposed by Google, using NativeClient can easily provide the capabilities of many local libraries to web pages, without complicated porting processes, which makes reuse very convenient.
PPAPI and NativeClient are not necessarily related. They solve diff
Chromium Android WebView is a Chromium designed for Android WebView to provide a package layer for content. As a whole, it can be understood as a specialized embedder, which can be summed up as:1. The content and partial browser components are packaged into Java implementations for WebView functions Aosp WebView calls. 2. Implement the single-process rendering ar
Obtain the Chromium source code, Environment configuration, and chromium source code.
1. Get code
A) do not download the code, browse directly, here: http://src.chromium.org/viewvc/chrome/ or here: http://code.google.com/p/chromium/source/search
B) quickly download the code package (tarball), here: http://chromium-
Chromium Graphics: Principle and Implementation of the synchronization mechanism between GPU clients-Part II, chromium-part
Abstract: Part I analyzes the synchronization problems between GPU clients and the basic principle of the extended synchronization point MECHANISM OF Chromium GL. This article analyzes the implementation of the synchronization point mechanis
, gpgcheck=1 change to gpgcheck=0. However, there is a potential risk of doing so, and the Gpgcheck is reset to 1 immediately after the V8 is installed.
Another strange problem is that when you open chromium, the browser does not open, and SELinux always error:
Summary:selinux is preventing/usr/lib/chromium-browser/
Here we only focus on several classes different from the native chromium.1. DrawGLFunctorThe hardware rendering of android4.4 webview chromium is a collaboration between the android ui System and the chromium kernel.Completed. The android ui system is responsible for triggering web page rendering (calling WebView. onDraw () and providingThe final destination of t
A week later, there were 796 changes in chromium (554 submissions) and WebKit (1350 submissions. Highlights include the new logo of chromium, multi-tag selection, an animation API, new CSS direction attributes, and Violet optimization.
Scott Violet released the first feature of the new feature:Multi-label selection. To select only one tag at a time, you can use Shift + Click or Ctrl + Click to select multi
Original address: http://blog.sina.com.cn/s/blog_858820890102v63w.htmldo not remember from the beginning of this year, Chromium no longer supports Netscape plugin API (NPAPI), and Flashplugin in the official repositories is not working.Browser does not support Flash how can I use? Must be addressed.1. Online search for half a day, mostly follow the browser prompts to download the Adobe Flash Player plugin,
The idea of the document begins with the design of the requirements and chromium the main design features. There is never a complex design, and they can all be converted into simple descriptions. Hope to solve the chromium design points from the study.(The article is still being perfected ...). )Classification of requirementsChormium The application requirements of the Page view class into two categories(re
Android offers webview based on the chromium implementation from 4.4. Previously WebView was based on WebKit implementations. WebKit provides basic functions such as Web page parsing, layout and plotting, and JS running. Chromium provides infrastructure for WebView process, threading, and rendering on a webkit basis. Therefore, WebView based on chromium provides
Chromium how to display Web pagesReprint Please specify source: https://ahangchen.gitbooks.io/chromium_doc_zh/content/zh//Start_Here_Background_Reading/How_Chromium_ Displays_web_pages.htmlIf you have a GitHub account, you may want to take star a Https://github.com/ahangchen/Chromium_doc_zhThis document describes from the bottom of how chromium is displaying Web pages. Make sure you have read too many proce
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