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Implement off-screen rendering support using delegated rendering (issue #1257).

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This implementation supports both GPU compositing and software compositing (used when GPU is not supported or when passing `--disable-gpu --disable-gpu-compositing` command-line flags). GPU-accelerated features (WebGL and 3D CSS) that did not work with the previous off-screen rendering implementation do work with this implementation when GPU support is available.

Rendering now operates on a per-frame basis. The frame rate is configurable via CefBrowserSettings.windowless_frame_rate up to a maximum of 60fps (potentially limited by how fast the system can generate new frames). CEF generates a bitmap from the compositor backing and passes it to CefRenderHandler::OnPaint.

The previous CefRenderHandler/CefBrowserHost API for off-screen rendering has been restored mostly as-is with some minor changes:

- CefBrowserHost::Invalidate no longer accepts a CefRect region argument. Instead of invalidating a specific region it now triggers generation of a new frame.
- The |dirtyRects| argument to CefRenderHandler::OnPaint will now always be a single CefRect representing the whole view (frame) size. Previously, invalidated regions were listed separately.
- Linux: CefBrowserHost::SendKeyEvent now expects X11 event information instead of GTK event information. See cefclient for an example of converting GTK events to the necessary format.
- Sizes passed to the CefRenderHandler OnPaint and OnPopupSize methods are now already DPI scaled. Previously, the client had to perform DPI scaling.
- Includes drag&drop implementation from issue #1032.
- Includes unit test fixes from issue #1245.

git-svn-id: https://chromiumembedded.googlecode.com/svn/trunk@1751 5089003a-bbd8-11dd-ad1f-f1f9622dbc98
This commit is contained in:
Marshall Greenblatt
2014-06-30 22:30:29 +00:00
parent 133317eeec
commit dea4daffd7
106 changed files with 13053 additions and 176 deletions
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58
tests/cefclient/client_handler.h
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@@ -36,8 +36,15 @@ class ClientHandler : public CefClient,
public CefKeyboardHandler,
public CefLifeSpanHandler,
public CefLoadHandler,
public CefRenderHandler,
public CefRequestHandler {
public:
// Interface implemented to handle off-screen rendering.
class RenderHandler : public CefRenderHandler {
public:
virtual void OnBeforeClose(CefRefPtr<CefBrowser> browser) =0;
};
typedef std::set<CefMessageRouterBrowserSide::Handler*> MessageHandlerSet;
ClientHandler();
@@ -68,6 +75,9 @@ class ClientHandler : public CefClient,
virtual CefRefPtr<CefLoadHandler> GetLoadHandler() OVERRIDE {
return this;
}
virtual CefRefPtr<CefRenderHandler> GetRenderHandler() OVERRIDE {
return this;
}
virtual CefRefPtr<CefRequestHandler> GetRequestHandler() OVERRIDE {
return this;
}
@@ -112,7 +122,7 @@ class ClientHandler : public CefClient,
// CefDragHandler methods
virtual bool OnDragEnter(CefRefPtr<CefBrowser> browser,
CefRefPtr<CefDragData> dragData,
DragOperationsMask mask) OVERRIDE;
CefDragHandler::DragOperationsMask mask) OVERRIDE;
// CefGeolocationHandler methods
virtual void OnRequestGeolocationPermission(
@@ -128,6 +138,15 @@ class ClientHandler : public CefClient,
bool* is_keyboard_shortcut) OVERRIDE;
// CefLifeSpanHandler methods
virtual bool OnBeforePopup(CefRefPtr<CefBrowser> browser,
CefRefPtr<CefFrame> frame,
const CefString& target_url,
const CefString& target_frame_name,
const CefPopupFeatures& popupFeatures,
CefWindowInfo& windowInfo,
CefRefPtr<CefClient>& client,
CefBrowserSettings& settings,
bool* no_javascript_access) OVERRIDE;
virtual void OnAfterCreated(CefRefPtr<CefBrowser> browser) OVERRIDE;
virtual bool DoClose(CefRefPtr<CefBrowser> browser) OVERRIDE;
virtual void OnBeforeClose(CefRefPtr<CefBrowser> browser) OVERRIDE;
@@ -162,9 +181,44 @@ class ClientHandler : public CefClient,
virtual void OnRenderProcessTerminated(CefRefPtr<CefBrowser> browser,
TerminationStatus status) OVERRIDE;
// CefRenderHandler methods
virtual bool GetRootScreenRect(CefRefPtr<CefBrowser> browser,
CefRect& rect) OVERRIDE;
virtual bool GetViewRect(CefRefPtr<CefBrowser> browser,
CefRect& rect) OVERRIDE;
virtual bool GetScreenPoint(CefRefPtr<CefBrowser> browser,
int viewX,
int viewY,
int& screenX,
int& screenY) OVERRIDE;
virtual bool GetScreenInfo(CefRefPtr<CefBrowser> browser,
CefScreenInfo& screen_info) OVERRIDE;
virtual void OnPopupShow(CefRefPtr<CefBrowser> browser, bool show) OVERRIDE;
virtual void OnPopupSize(CefRefPtr<CefBrowser> browser,
const CefRect& rect) OVERRIDE;
virtual void OnPaint(CefRefPtr<CefBrowser> browser,
PaintElementType type,
const RectList& dirtyRects,
const void* buffer,
int width,
int height) OVERRIDE;
virtual void OnCursorChange(CefRefPtr<CefBrowser> browser,
CefCursorHandle cursor) OVERRIDE;
virtual bool StartDragging(CefRefPtr<CefBrowser> browser,
CefRefPtr<CefDragData> drag_data,
CefRenderHandler::DragOperationsMask allowed_ops,
int x, int y) OVERRIDE;
virtual void UpdateDragCursor(CefRefPtr<CefBrowser> browser,
CefRenderHandler::DragOperation operation)
OVERRIDE;
void SetMainHwnd(ClientWindowHandle hwnd);
ClientWindowHandle GetMainHwnd() { return m_MainHwnd; }
void SetEditHwnd(ClientWindowHandle hwnd);
void SetOSRHandler(CefRefPtr<RenderHandler> handler) {
m_OSRHandler = handler;
}
CefRefPtr<RenderHandler> GetOSRHandler() { return m_OSRHandler; }
void SetButtonHwnds(ClientWindowHandle backHwnd,
ClientWindowHandle forwardHwnd,
ClientWindowHandle reloadHwnd,
@@ -252,6 +306,8 @@ class ClientHandler : public CefClient,
ClientWindowHandle m_StopHwnd;
ClientWindowHandle m_ReloadHwnd;
CefRefPtr<RenderHandler> m_OSRHandler;
// Support for logging.
std::string m_LogFile;