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Linux: Reduce resource usage when the window is minimized (issue #1369).

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git-svn-id: https://chromiumembedded.googlecode.com/svn/branches/2062@1833 5089003a-bbd8-11dd-ad1f-f1f9622dbc98
This commit is contained in:
Marshall Greenblatt
2014-09-11 18:25:17 +00:00
parent e83c8bde80
commit ff93980c84
2 changed files with 102 additions and 2 deletions
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39
libcef/browser/window_x11.cc
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@ -17,17 +17,21 @@
namespace {
const char kAtom[] = "ATOM";
const char kWMDeleteWindow[] = "WM_DELETE_WINDOW";
const char kWMProtocols[] = "WM_PROTOCOLS";
const char kNetWMPing[] = "_NET_WM_PING";
const char kNetWMPid[] = "_NET_WM_PID";
const char kNetWMPing[] = "_NET_WM_PING";
const char kNetWMState[] = "_NET_WM_STATE";
const char kXdndProxy[] = "XdndProxy";
const char* kAtomsToCache[] = {
kAtom,
kWMDeleteWindow,
kWMProtocols,
kNetWMPing,
kNetWMPid,
kNetWMPing,
kNetWMState,
kXdndProxy,
NULL
};
@ -360,6 +364,37 @@ uint32_t CefWindowX11::DispatchEvent(const ui::PlatformEvent& event) {
if (focus_pending_)
focus_pending_ = false;
break;
case PropertyNotify: {
::Atom changed_atom = xev->xproperty.atom;
if (changed_atom == atom_cache_.GetAtom(kNetWMState)) {
// State change event like minimize/maximize.
if (browser_) {
::Window child = FindChild(xdisplay_, xwindow_);
if (child) {
// Forward the state change to the child DesktopWindowTreeHostX11
// window so that resource usage will be reduced while the window is
// minimized.
std::vector< ::Atom> atom_list;
if (ui::GetAtomArrayProperty(xwindow_, kNetWMState, &atom_list) &&
!atom_list.empty()) {
ui::SetAtomArrayProperty(child, kNetWMState, "ATOM", atom_list);
} else {
// Set an empty list of property values to pass the check in
// DesktopWindowTreeHostX11::OnWMStateUpdated().
XChangeProperty(xdisplay_,
child,
atom_cache_.GetAtom(kNetWMState), // name
atom_cache_.GetAtom(kAtom), // type
32, // size in bits of items in 'value'
PropModeReplace,
NULL,
0); // num items
}
}
}
}
break;
}
}
return ui::POST_DISPATCH_STOP_PROPAGATION;