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Windows: Set browser window size to 0x0 when minimized to reduce resource usage (issue #1369). 

git-svn-id: https://chromiumembedded.googlecode.com/svn/trunk@1820 5089003a-bbd8-11dd-ad1f-f1f9622dbc98
This commit is contained in:
Marshall Greenblatt 2014-09-04 23:12:28 +00:00
parent df2242aff2
commit 6308a7e03b
2 changed files with 35 additions and 25 deletions
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12
libcef/browser/browser_host_impl_win.cc
View File

@ -589,13 +589,15 @@ LRESULT CALLBACK CefBrowserHostImpl::WndProc(HWND hwnd, UINT message,
return 0;
case WM_SIZE:
// Minimizing resizes the window to 0x0 which causes our layout to go all
// screwy, so we just ignore it.
if (wParam != SIZE_MINIMIZED && browser && browser->window_widget_) {
// Resize the Widget window to the full size of the browser window.
if (browser && browser->window_widget_) {
// Pass window resize events to the HWND for the DesktopNativeWidgetAura
// root window. Passing size 0x0 (wParam == SIZE_MINIMIZED, for example)
// will cause the widget to be hidden which reduces resource usage.
RECT rc;
GetClientRect(hwnd, &rc);
browser->window_widget_->SetSize(gfx::Size(rc.right, rc.bottom));
SetWindowPos(HWNDForWidget(browser->window_widget_), NULL,
rc.left, rc.top, rc.right - rc.left, rc.bottom - rc.top,
SWP_NOZORDER);
}
return 0;

28
tests/cefclient/cefclient_win.cpp
View File

@ -596,26 +596,33 @@ LRESULT CALLBACK WndProc(HWND hWnd, UINT message, WPARAM wParam,
}
return 0;
case WM_SIZE:
case WM_SIZE: {
if (!g_handler.get())
break;
// Mark the off-screen browser as hidden when the frame window is
// minimized to reduce resource usage.
if (AppIsOffScreenRenderingEnabled()) {
// For off-screen browsers when the frame window is minimized set the
// browser as hidden to reduce resource usage.
const bool offscreen = AppIsOffScreenRenderingEnabled();
if (offscreen) {
CefRefPtr<OSRWindow> osr_window =
static_cast<OSRWindow*>(g_handler->GetOSRHandler().get());
if (osr_window)
osr_window->WasHidden(wParam == SIZE_MINIMIZED);
}
// Don't resize the window if minimizing because the resulting size of 0x0
// causes the layout to go all screwy.
if (wParam != SIZE_MINIMIZED && g_handler->GetBrowser()) {
if (g_handler->GetBrowser()) {
// Retrieve the window handle (parent window with off-screen rendering).
CefWindowHandle hwnd =
g_handler->GetBrowser()->GetHost()->GetWindowHandle();
if (hwnd) {
if (wParam == SIZE_MINIMIZED) {
// For windowed browsers when the frame window is minimized set the
// browser window size to 0x0 to reduce resource usage.
if (!offscreen) {
SetWindowPos(hwnd, NULL,
0, 0, 0, 0, SWP_NOZORDER | SWP_NOMOVE | SWP_NOACTIVATE);
}
} else {
// Resize the window and address bar to match the new frame size.
RECT rect;
GetClientRect(hWnd, &rect);
@ -627,12 +634,13 @@ LRESULT CALLBACK WndProc(HWND hWnd, UINT message, WPARAM wParam,
hdwp = DeferWindowPos(hdwp, editWnd, NULL, urloffset,
0, rect.right - urloffset, URLBAR_HEIGHT, SWP_NOZORDER);
hdwp = DeferWindowPos(hdwp, hwnd, NULL,
rect.left, rect.top, rect.right - rect.left, rect.bottom - rect.top,
SWP_NOZORDER);
rect.left, rect.top, rect.right - rect.left,
rect.bottom - rect.top, SWP_NOZORDER);
EndDeferWindowPos(hdwp);
}
}
break;
}
} break;
case WM_ERASEBKGND:
if (g_handler.get() && g_handler->GetBrowser()) {