Add render object that paints plugin snapshots

https://bugs.webkit.org/show_bug.cgi?id=98322
<rdar://problem/12426546>

Reviewed by Simon Fraser.

First, teach plugins to maintain a set of states when plugin snapshotting is enabled.

Second, a new RenderSnapshottedPlugIn class is a RenderEmbeddedObject that knows how to paint
snapshots when the plugin is not visibly playing. It maintains a RenderImageResource to
the generated poster image.

* html/HTMLPlugInElement.cpp:
(WebCore::HTMLPlugInElement::HTMLPlugInElement): By default all plugins play on load.
* html/HTMLPlugInElement.h: Move the inheritance of ImageLoaderClientBase down to
HTMLPlugInImageElement, since that is the class that actually deals with image-based plugins.
(WebCore::HTMLPlugInElement::displayState): Add bit for display state.
(WebCore::HTMLPlugInElement::setDisplayState):
(WebCore::HTMLPlugInElement::updateSnapshot):

* html/HTMLPlugInImageElement.cpp:
(WebCore::HTMLPlugInImageElement::HTMLPlugInImageElement): If plugin snapshotting is
enabled, plugin state is set to wait for a poster image.
(WebCore::HTMLPlugInImageElement::createRenderer): Create RenderSnapshottedPlugIn if
plugin snapshotting is enabled.
(WebCore::HTMLPlugInImageElement::updateSnapshot): Once a snapshot is available, update the
renderer and set its state to wait for user input to start the plugin.
* html/HTMLPlugInImageElement.h:
(HTMLPlugInImageElement):

* rendering/RenderObject.h:
(WebCore::RenderObject::isSnapshottedPlugIn): Add new function to identify
RenderSnapshottedPlugIn instances. Since RenderSnapshottedPlugIn inherits from
RenderEmbeddedObject, isEmbeddedObject() still returns true.
* rendering/RenderEmbeddedObject.h:
(RenderEmbeddedObject): Elevate a few virtual methods to protected for
RenderSnapshottedPlugIn to override.

* rendering/RenderSnapshottedPlugIn.cpp: Added.
(WebCore::RenderSnapshottedPlugIn::RenderSnapshottedPlugIn): Initialize snapshot
resource.
(WebCore::RenderSnapshottedPlugIn::~RenderSnapshottedPlugIn): Shut down snapshot
image resource to remove the renderer as a client, and remove image from memory cache.
(WebCore::RenderSnapshottedPlugIn::plugInImageElement): Convenience function to get the
HTML element.
(WebCore::RenderSnapshottedPlugIn::updateSnapshot): Cache the snapshot, and repaint.
(WebCore::RenderSnapshottedPlugIn::paint): If the plugin is not playing, paint like a
RenderImage does.
(WebCore::RenderSnapshottedPlugIn::paintReplaced): Paint the snapshot and overlay if the
plugin is not playing.
(WebCore::RenderSnapshottedPlugIn::paintReplacedSnapshot): Inspired by
RenderImage::paintReplaced() and RenderImage::paintIntoRect().
* rendering/RenderSnapshottedPlugIn.h: Added.
(WebCore::RenderSnapshottedPlugIn::isSnapshottedPlugin): Returns true.

* rendering/RenderTheme.h: Add a function that paints the overlay on top of the snapshot.
* rendering/RenderThemeMac.h:
* rendering/RenderThemeMac.mm:
(WebCore::RenderThemeMac::paintPlugInSnapshotOverlay):

* WebCore.xcodeproj/project.pbxproj: Add new RenderSnapshottedPlugIn class.
* CMakeLists.txt: Ditto.
* GNUmakefile.list.am: Ditto.
* Target.pri: Ditto.
* WebCore.gypi: Ditto.
* WebCore.vcproj/WebCore.vcproj: Ditto.
* rendering/RenderingAllInOne.cpp: Ditto.

git-svn-id: svn://svn.chromium.org/blink/trunk@130688 bbb929c8-8fbe-4397-9dbb-9b2b20218538

0 files changed, 0 insertions, 0 deletions