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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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65
tests/cefclient/cefclient_gtk.cpp
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@ -16,6 +16,7 @@
#include <string>
#include "cefclient/cefclient.h"
#include "include/base/cef_scoped_ptr.h"
#include "include/cef_app.h"
#include "include/cef_browser.h"
#include "include/cef_frame.h"
@ -115,6 +116,68 @@ gboolean WindowFocusIn(GtkWidget* widget,
return FALSE;
}
gboolean WindowState(GtkWidget* widget,
GdkEventWindowState* event,
gpointer user_data) {
if (!(event->changed_mask & GDK_WINDOW_STATE_ICONIFIED))
return TRUE;
if (!g_handler)
return TRUE;
CefRefPtr<CefBrowser> browser = g_handler->GetBrowser();
if (!browser)
return TRUE;
const bool iconified = (event->new_window_state & GDK_WINDOW_STATE_ICONIFIED);
if (browser->GetHost()->IsWindowRenderingDisabled()) {
// Notify the off-screen browser that it was shown or hidden.
browser->GetHost()->WasHidden(iconified);
} else {
// Forward the state change event to the browser window.
::Display* xdisplay = cef_get_xdisplay();
::Window xwindow = browser->GetHost()->GetWindowHandle();
// Retrieve the atoms required by the below XChangeProperty call.
const char* kAtoms[] = {
"_NET_WM_STATE",
"ATOM",
"_NET_WM_STATE_HIDDEN"
};
Atom atoms[3];
int result = XInternAtoms(xdisplay, const_cast<char**>(kAtoms), 3, false,
atoms);
if (!result)
NOTREACHED();
if (iconified) {
// Set the hidden property state value.
scoped_ptr<Atom[]> data(new Atom[1]);
data[0] = atoms[2];
XChangeProperty(xdisplay,
xwindow,
atoms[0], // name
atoms[1], // type
32, // size in bits of items in 'value'
PropModeReplace,
reinterpret_cast<const unsigned char*>(data.get()),
1); // num items
} else {
// Set an empty array of property state values.
XChangeProperty(xdisplay,
xwindow,
atoms[0], // name
atoms[1], // type
32, // size in bits of items in 'value'
PropModeReplace,
NULL,
0); // num items
}
}
return TRUE;
}
// Callback for Tests > Get Source... menu item.
gboolean GetSourceActivated(GtkWidget* widget) {
if (g_handler.get() && g_handler->GetBrowserId())
@ -357,6 +420,8 @@ int main(int argc, char* argv[]) {
gtk_window_set_default_size(GTK_WINDOW(window), 800, 600);
g_signal_connect(window, "focus-in-event",
G_CALLBACK(WindowFocusIn), NULL);
g_signal_connect(window, "window-state-event",
G_CALLBACK(WindowState), NULL);
GtkWidget* vbox = gtk_vbox_new(FALSE, 0);
g_signal_connect(vbox, "size-allocate",