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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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43
libcef/browser/window_x11.cc
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@@ -173,10 +173,14 @@ void CefWindowX11::Focus() {
if (xwindow_ == None || !window_mapped_)
return;
::Window child = FindChild(xdisplay_, xwindow_);
if (child && ui::IsWindowVisible(child)) {
// Give focus to the child DesktopWindowTreeHostX11.
XSetInputFocus(xdisplay_, child, RevertToParent, CurrentTime);
if (browser_) {
::Window child = FindChild(xdisplay_, xwindow_);
if (child && ui::IsWindowVisible(child)) {
// Give focus to the child DesktopWindowTreeHostX11.
XSetInputFocus(xdisplay_, child, RevertToParent, CurrentTime);
}
} else {
XSetInputFocus(xdisplay_, xwindow_, RevertToParent, CurrentTime);
}
}
@@ -233,13 +237,15 @@ uint32_t CefWindowX11::DispatchEvent(const ui::PlatformEvent& event) {
xev->xconfigure.width, xev->xconfigure.height);
bounds_ = bounds;
::Window child = FindChild(xdisplay_, xwindow_);
if (child) {
// Resize the child DesktopWindowTreeHostX11 to match this window.
XWindowChanges changes = {0};
changes.width = bounds.width();
changes.height = bounds.height();
XConfigureWindow(xdisplay_, child, CWHeight | CWWidth, &changes);
if (browser_) {
::Window child = FindChild(xdisplay_, xwindow_);
if (child) {
// Resize the child DesktopWindowTreeHostX11 to match this window.
XWindowChanges changes = {0};
changes.width = bounds.width();
changes.height = bounds.height();
XConfigureWindow(xdisplay_, child, CWHeight | CWWidth, &changes);
}
}
break;
}
@@ -247,7 +253,7 @@ uint32_t CefWindowX11::DispatchEvent(const ui::PlatformEvent& event) {
Atom message_type = static_cast<Atom>(xev->xclient.data.l[0]);
if (message_type == atom_cache_.GetAtom("WM_DELETE_WINDOW")) {
// We have received a close message from the window manager.
if (browser_->destruction_state() <=
if (browser_ && browser_->destruction_state() <=
CefBrowserHostImpl::DESTRUCTION_STATE_PENDING) {
if (browser_->destruction_state() ==
CefBrowserHostImpl::DESTRUCTION_STATE_NONE) {
@@ -276,9 +282,11 @@ uint32_t CefWindowX11::DispatchEvent(const ui::PlatformEvent& event) {
case DestroyNotify:
xwindow_ = None;
// Force the browser to be destroyed and release the reference added
// in PlatformCreateWindow().
browser_->WindowDestroyed();
if (browser_) {
// Force the browser to be destroyed and release the reference added
// in PlatformCreateWindow().
browser_->WindowDestroyed();
}
delete this;
break;
@@ -311,8 +319,7 @@ uint32_t CefWindowX11::DispatchEvent(const ui::PlatformEvent& event) {
void CefWindowX11::ContinueFocus() {
if (!focus_pending_)
return;
browser_->SetFocus(true);
if (browser_)
browser_->SetFocus(true);
focus_pending_ = false;
}