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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/browser/browser_host_impl_win.cc
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@ -716,7 +716,7 @@ void CefBrowserHostImpl::PlatformSetFocus(bool focus) {
}
CefWindowHandle CefBrowserHostImpl::PlatformGetWindowHandle() {
return window_info_.window;
return IsWindowless() ? window_info_.parent_window : window_info_.window;
}
bool CefBrowserHostImpl::PlatformViewText(const std::string& text) {
@ -922,11 +922,17 @@ void CefBrowserHostImpl::PlatformTranslateMouseEvent(
result.globalX = result.x;
result.globalY = result.y;
// global position
POINT globalPoint = { result.x, result.y };
ClientToScreen(GetWindowHandle(), &globalPoint);
result.globalX = globalPoint.x;
result.globalY = globalPoint.y;
if (IsWindowless()) {
GetClient()->GetRenderHandler()->GetScreenPoint(
GetBrowser(),
result.x, result.y,
result.globalX, result.globalY);
} else {
POINT globalPoint = { result.x, result.y };
ClientToScreen(GetWindowHandle(), &globalPoint);
result.globalX = globalPoint.x;
result.globalY = globalPoint.y;
}
// modifiers
result.modifiers |= TranslateModifiers(mouse_event.modifiers);