cef/tests/cefclient/osrenderer.h
Marshall Greenblatt dea4daffd7 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
2014-06-30 22:30:29 +00:00

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// Copyright (c) 2012 The Chromium Embedded Framework Authors. All rights
// reserved. Use of this source code is governed by a BSD-style license
// that can be found in the LICENSE file.
#ifndef CEF_TESTS_CEFCLIENT_OSRENDERER_H_
#define CEF_TESTS_CEFCLIENT_OSRENDERER_H_
#pragma once
#include "include/cef_browser.h"
#include "include/cef_render_handler.h"
class ClientOSRenderer {
public:
// The context must outlive this object.
explicit ClientOSRenderer(bool transparent);
virtual ~ClientOSRenderer();
// Initialize the OpenGL environment.
void Initialize();
// Clean up the OpenGL environment.
void Cleanup();
// Render to the screen.
void Render();
// Forwarded from CefRenderHandler callbacks.
void OnPopupShow(CefRefPtr<CefBrowser> browser,
bool show);
void OnPopupSize(CefRefPtr<CefBrowser> browser,
const CefRect& rect);
void OnPaint(CefRefPtr<CefBrowser> browser,
CefRenderHandler::PaintElementType type,
const CefRenderHandler::RectList& dirtyRects,
const void* buffer, int width, int height);
// Apply spin.
void SetSpin(float spinX, float spinY);
void IncrementSpin(float spinDX, float spinDY);
bool IsTransparent() { return transparent_; }
int GetViewWidth() { return view_width_; }
int GetViewHeight() { return view_height_; }
const CefRect& popup_rect() const { return popup_rect_; }
const CefRect& original_popup_rect() const { return original_popup_rect_; }
CefRect GetPopupRectInWebView(const CefRect& original_rect);
void ClearPopupRects();
private:
bool transparent_;
bool initialized_;
unsigned int texture_id_;
int view_width_;
int view_height_;
CefRect popup_rect_;
CefRect original_popup_rect_;
float spin_x_;
float spin_y_;
};
#endif // CEF_TESTS_CEFCLIENT_OSRENDERER_H_