Embedding/IPCLiteAPI: Difference between revisions
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== Lite-weight Embedding | == Lite-weight Embedding API for Mozilla based applications with native UI. == | ||
<p>Basic architecture is very close to [http://trac.webkit.org/wiki/WebKit2 WebKit2], and [http://browser.garage.maemo.org/docs/browser_paper.html MicroB] | <p>Basic architecture is very close to [http://trac.webkit.org/wiki/WebKit2 WebKit2], and [http://browser.garage.maemo.org/docs/browser_paper.html MicroB] | ||
</p><p>Benefits of new architecture comparing to default [https://wiki.mozilla.org/Embedding/NewApi mozilla embedding]:</p> | </p><p>Benefits of new architecture comparing to default [https://wiki.mozilla.org/Embedding/NewApi mozilla embedding]:</p> | ||
<pre class="_fck_mw_lspace">* No XUL/XPCOM heavy content in UI process (Best memory footprint, fast startup) | <pre class="_fck_mw_lspace">* No XUL/XPCOM heavy content in UI process/Thread (Best memory footprint (process case), fast startup) | ||
* | * Process/Thread communication between UI and Content(Gecko/XPCOM) Thread/Process - built on current Mozilla Chromium/IPDL implementation ([https://developer.mozilla.org/en-US/docs/IPDL/Tutorial IPDL Tutorial]) | ||
* Rendering based on Shadow/Shadowable layers tree (same as content rendering in XUL Mobile FF) | * Rendering based on Shadow/Shadowable layers tree which provide MultiThread/Process responsive rendering (same as content rendering in XUL Mobile FF/OMTC Android Firefox/Firefox OS) | ||
* | * Multi process model provide ability to load memory greedy content in child process and kill it without increasing memory usage for Main UI application process | ||
</pre> | </pre> | ||
Revision as of 01:03, 16 January 2013
Lite-weight Embedding API for Mozilla based applications with native UI.
Basic architecture is very close to WebKit2, and MicroB
Benefits of new architecture comparing to default mozilla embedding:
* No XUL/XPCOM heavy content in UI process/Thread (Best memory footprint (process case), fast startup) * Process/Thread communication between UI and Content(Gecko/XPCOM) Thread/Process - built on current Mozilla Chromium/IPDL implementation ([https://developer.mozilla.org/en-US/docs/IPDL/Tutorial IPDL Tutorial]) * Rendering based on Shadow/Shadowable layers tree which provide MultiThread/Process responsive rendering (same as content rendering in XUL Mobile FF/OMTC Android Firefox/Firefox OS) * Multi process model provide ability to load memory greedy content in child process and kill it without increasing memory usage for Main UI application process
New embedding expected initialization sequence
1. Native UI startup (android UI thread view or Gtk/Qt event loop) 2. Create XRE_InitIPCEmbedding 3. Chromium message loop started a) Child process created and IPDL channel established 4. Create embed view using embedding API a) TabParent/Child, DOMWindow initialization b) PLayers protocol created 6. Render data from UI process LayerManager (SW/HW rendering) to Native UI GC. 7. Load content in remote view (HTML, XUL)
Communication between UI and content process
* Load remote content JS (privileged script with full access) and interact using MessageMessenger (send/receive JSON messages) * Use embed messaging API (observe broadcast messages) * Build Application specific IPC serialization library, load XPCOM component in child process linked with this IPC library.
Source code path queue
BMO Bug 713681
Build instructions:
git clone git://github.com/romaxa/mozilla-central.git cd mozilla-central git checkout embedlite cp embedding/embedlite/config/mozconfig.gtkdesktop mozconfig # or # for harmattan # cp embedding/embedlite/config/mozconfig.qtN9-qt mozconfig MOZCONFIG=$(pwd)/mozconfig make -f client.mk build_all
Pre compiled binaries:
Mer (ARMv7 hardfp)
http://romaxa.info/mer/mozbuild.tar.gz
Harmattan
http://romaxa.info/mer/mozbuildhm.tar.gz
Qt-Desktop and BeagleBoard Ubuntu
http://romaxa.info/fennec/IPCEmbedding/
Run test examples:
cd obj-*/dist/bin Basic core test ./embedLiteCoreInitTest EmbedLiteAPI wrapped into qt/qml widget Qt only, qml based UI with scrolling and zooming (no clicks): ./qmlMozEmbedTest -url linux.org.ru
Basic view of new architecture:
