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avoid double-copying a window while its parent is refreshing

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This commit is contained in:
Jinhao 2015-10-13 23:11:57 +08:00
parent 1fde1c844b
commit a9983101ab
1 changed files with 8 additions and 0 deletions
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8
source/gui/detail/window_manager.cpp
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@ -676,6 +676,14 @@ namespace detail
std::lock_guard<decltype(mutex_)> lock(mutex_); std::lock_guard<decltype(mutex_)> lock(mutex_);
if (impl_->wd_register.available(wd) && !wd->is_draw_through()) if (impl_->wd_register.available(wd) && !wd->is_draw_through())
{ {
auto parent = wd->parent;
while (parent)
{
if (parent->flags.refreshing)
return;
parent = parent->parent;
}
//Copy the root buffer that wd specified into DeviceContext //Copy the root buffer that wd specified into DeviceContext
#if defined(NANA_LINUX) #if defined(NANA_LINUX)
wd->drawer.map(reinterpret_cast<window>(wd), forced, update_area); wd->drawer.map(reinterpret_cast<window>(wd), forced, update_area);