cef/libcef/browser/render_widget_host_view_osr...

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Implement off-screen rendering support using delegated rendering (issue #1257). 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
2014-07-01 00:30:29 +02:00
// Copyright (c) 2014 The Chromium Embedded Framework Authors.
// Portions copyright (c) 2012 The Chromium Authors. All rights reserved.
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#include "libcef/browser/render_widget_host_view_osr.h"
#include <X11/Xlib.h>
#include "libcef/browser/browser_host_impl.h"
#include "libcef/browser/window_x11.h"
#include "ui/gfx/x/x11_types.h"
void CefRenderWidgetHostViewOSR::PlatformCreateCompositorWidget() {
// Create a hidden 1x1 window. It will delete itself on close.
window_ = new CefWindowX11(NULL, None, gfx::Rect(0, 0, 1, 1));
compositor_widget_ = window_->xwindow();
}
void CefRenderWidgetHostViewOSR::PlatformDestroyCompositorWidget() {
DCHECK(window_);
window_->Close();
compositor_widget_ = gfx::kNullAcceleratedWidget;
}