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Don't generate update tasks while layout is occurring.

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git-svn-id: https://chromiumembedded.googlecode.com/svn/trunk@369 5089003a-bbd8-11dd-ad1f-f1f9622dbc98
This commit is contained in:
Marshall Greenblatt 2011-11-09 23:13:26 +00:00
parent 587eb7871d
commit 9d2dbef101
2 changed files with 5 additions and 6 deletions
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4
libcef/webwidget_host.cc
View File

@ -89,19 +89,17 @@ gfx::PluginWindowHandle WebWidgetHost::GetWindowedPluginAt(int x, int y)
}
void WebWidgetHost::DoPaint() {
has_update_task_ = false;
// TODO(cef): The below code is cross-platform but the IsIdle() method
// currently requires patches to Chromium. Since this code is only executed
// on Windows it's been stuck behind an #ifdef for now to avoid having to
// patch Chromium code on other platforms.
#if defined(OS_WIN)
if (MessageLoop::current()->IsIdle()) {
has_update_task_ = false;
// Paint to the delegate. The rect argument is unused.
Paint(gfx::Rect());
} else {
// Try again later.
has_update_task_ = true;
CefThread::PostTask(CefThread::UI, FROM_HERE,
base::Bind(&WebWidgetHost::DoPaint, weak_factory_.GetWeakPtr()));
}

7
libcef/webwidget_host_win.cc
View File

@ -502,7 +502,7 @@ void WebWidgetHost::Paint(const gfx::Rect& /*dirty_rect*/) {
// Draw children
UpdateWindow(view_);
} else if(!damaged_rgn.isEmpty()) {
} else {
// Paint to the delegate.
DCHECK(paint_delegate_);
const SkBitmap& bitmap = canvas_->getDevice()->accessBitmap(false);
@ -531,8 +531,9 @@ void WebWidgetHost::InvalidateRect(const gfx::Rect& rect)
RECT r = rect.ToRECT();
::InvalidateRect(view_, &r, FALSE);
} else {
// Paint() will be called by DoPaint().
if (!has_update_task_) {
// Don't post a paint task if this invalidation occurred during layout or if
// a paint task is already pending. Paint() will be called by DoPaint().
if (!layouting_ && !has_update_task_) {
has_update_task_ = true;
CefThread::PostTask(CefThread::UI, FROM_HERE,
base::Bind(&WebWidgetHost::DoPaint, weak_factory_.GetWeakPtr()));