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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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18
libcef_dll/ctocpp/browser_host_ctocpp.h
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@@ -62,6 +62,11 @@ class CefBrowserHostCToCpp
virtual void CloseDevTools() OVERRIDE;
virtual void SetMouseCursorChangeDisabled(bool disabled) OVERRIDE;
virtual bool IsMouseCursorChangeDisabled() OVERRIDE;
virtual bool IsWindowRenderingDisabled() OVERRIDE;
virtual void WasResized() OVERRIDE;
virtual void WasHidden(bool hidden) OVERRIDE;
virtual void NotifyScreenInfoChanged() OVERRIDE;
virtual void Invalidate(PaintElementType type) OVERRIDE;
virtual void SendKeyEvent(const CefKeyEvent& event) OVERRIDE;
virtual void SendMouseClickEvent(const CefMouseEvent& event,
MouseButtonType type, bool mouseUp, int clickCount) OVERRIDE;
@@ -71,6 +76,19 @@ class CefBrowserHostCToCpp
int deltaY) OVERRIDE;
virtual void SendFocusEvent(bool setFocus) OVERRIDE;
virtual void SendCaptureLostEvent() OVERRIDE;
virtual CefTextInputContext GetNSTextInputContext() OVERRIDE;
virtual void HandleKeyEventBeforeTextInputClient(
CefEventHandle keyEvent) OVERRIDE;
virtual void HandleKeyEventAfterTextInputClient(
CefEventHandle keyEvent) OVERRIDE;
virtual void DragTargetDragEnter(CefRefPtr<CefDragData> drag_data,
const CefMouseEvent& event, DragOperationsMask allowed_ops) OVERRIDE;
virtual void DragTargetDragOver(const CefMouseEvent& event,
DragOperationsMask allowed_ops) OVERRIDE;
virtual void DragTargetDragLeave() OVERRIDE;
virtual void DragTargetDrop(const CefMouseEvent& event) OVERRIDE;
virtual void DragSourceEndedAt(int x, int y, DragOperationsMask op) OVERRIDE;
virtual void DragSourceSystemDragEnded() OVERRIDE;
};
#endif // USING_CEF_SHARED