enhance the performance of nana

source/gui/detail/basic_window.cpp

@@ -336,6 +336,43 @@ namespace nana
 				flags.action = act;
 			}
 
+
+			bool basic_window::try_lazy_update(bool try_refresh)
+			{
+				if (drawer.graphics.empty())
+					return true;
+
+				if (!this->root_widget->other.attribute.root->lazy_update)
+					return false;
+				
+				if (nullptr == effect.bground)
+				{
+					if (try_refresh)
+					{
+						flags.refreshing = true;
+						drawer.refresh();
+						flags.refreshing = false;
+					}
+				}
+
+				for (auto i = this->root_widget->other.attribute.root->update_requesters.cbegin(); i != this->root_widget->other.attribute.root->update_requesters.cend();)
+				{
+					auto req = *i;
+					//Avoid redundancy, don't insert the window if it or its ancestor window already exist in the container.
+					if ((req == this) || req->is_ancestor_of(this))
+						return true;
+
+					//If there is a window which is a child or child's child of the window, remove it.
+					if (this->is_ancestor_of(req))
+						i = this->root_widget->other.attribute.root->update_requesters.erase(i);
+					else
+						++i;
+				}
+
+				this->root_widget->other.attribute.root->update_requesters.push_back(this);
+				return true;
+			}
+
 			void basic_window::_m_init_pos_and_size(basic_window* parent, const rectangle& r)
 			{
 				pos_owner = pos_root = r.position();
@@ -390,7 +427,6 @@ namespace nana
 				flags.ignore_menubar_focus	= false;
 				flags.ignore_mouse_focus	= false;
 				flags.space_click_enabled = false;
-				flags.ignore_child_mapping = false;
 
 				visible = false;
 

source/gui/detail/bedrock_pi.cpp

@@ -641,13 +641,8 @@ namespace nana
 			if (update_state::none == wd->other.upd_state)
 				wd->other.upd_state = update_state::lazy;
 
-			auto ignore_mapping_value = wd->flags.ignore_child_mapping;
-			wd->flags.ignore_child_mapping = true;
-
 			_m_emit_core(evt_code, wd, false, arg, bForce__EmitInternal);
 
-			wd->flags.ignore_child_mapping = ignore_mapping_value;
-
 			bool good_wd = false;
 			if(wd_manager().available(wd))
 			{
@@ -658,10 +653,7 @@ namespace nana
 					wd_manager().do_lazy_refresh(wd, false, (event_code::resized == evt_code));
 				}
 				else
-				{
-					wd_manager().map_requester(wd);
 					wd->other.upd_state = update_state::none;
-				}
 
 				good_wd = true;
 			}

source/gui/detail/bedrock_posix.cpp

@@ -16,6 +16,7 @@
 #include <nana/system/platform.hpp>
 #include <nana/gui/detail/native_window_interface.hpp>
 #include <nana/gui/layout_utility.hpp>
+#include <nana/gui/detail/window_layout.hpp>
 #include <nana/gui/detail/element_store.hpp>
 #include "inner_fwd_implement.hpp"
 #include <errno.h>
@@ -555,6 +556,27 @@ namespace detail
 			context.is_alt_pressed = false;
 	}
 
+	class window_proc_guard
+	{
+	public:
+		window_proc_guard(detail::basic_window* wd) :
+			root_wd_(wd)
+		{
+			root_wd_->other.attribute.root->lazy_update = true;
+		}
+
+		~window_proc_guard()
+		{
+			if (!bedrock::instance().wd_manager().available(root_wd_))
+				return;
+
+			root_wd_->other.attribute.root->lazy_update = false;
+			root_wd_->other.attribute.root->update_requesters.clear();
+		}
+	private:
+		detail::basic_window* const root_wd_;
+	};
+
 	void window_proc_for_xevent(Display* /*display*/, XEvent& xevent)
 	{
 		typedef detail::bedrock::core_window_t core_window_t;
@@ -569,10 +591,13 @@ namespace detail
 
 		if(root_runtime)
 		{
-			auto msgwnd = root_runtime->window;
+			auto const root_wd = root_runtime->window;
+			auto msgwnd = root_wd;
+			window_proc_guard wp_guard{ root_wd };
+
 			auto& context = *brock.get_thread_context(msgwnd->thread_id);
 
-			auto pre_event_window = context.event_window;
+			auto const pre_event_window = context.event_window;
 			auto pressed_wd = root_runtime->condition.pressed;
 			auto pressed_wd_space = root_runtime->condition.pressed_by_space;
 			auto hovered_wd = root_runtime->condition.hovered;
@@ -1190,6 +1215,15 @@ namespace detail
 				}
 			}
 
+			if (wd_manager.available(root_wd) && root_wd->other.attribute.root->update_requesters.size())
+			{
+				for (auto wd : root_wd->other.attribute.root->update_requesters)
+				{
+					window_layout::paint(wd, window_layout::paint_operation::have_refreshed, false);
+					wd_manager.map(wd, true);
+				}
+			}
+
 			root_runtime = wd_manager.root_runtime(native_window);
 			if(root_runtime)
 			{

source/gui/detail/bedrock_windows.cpp

@@ -21,6 +21,7 @@
 #include <nana/gui.hpp>
 #include <nana/gui/detail/native_window_interface.hpp>
 #include <nana/gui/layout_utility.hpp>
+#include <nana/gui/detail/window_layout.hpp>
 #include <nana/gui/detail/element_store.hpp>
 #include <nana/gui/detail/color_schemes.hpp>
 #include "inner_fwd_implement.hpp"
@@ -37,6 +38,7 @@
 
 #include "bedrock_types.hpp"
 
+
 typedef void (CALLBACK *win_event_proc_t)(HWINEVENTHOOK hWinEventHook, DWORD event, HWND hwnd, LONG idObject, LONG idChild, DWORD dwEventThread, DWORD dwmsEventTime);
 
 namespace nana
@@ -738,6 +740,27 @@ namespace detail
 		return static_cast<wchar_t>(vkey);
 	}
 
+	class window_proc_guard
+	{
+	public:
+		window_proc_guard(detail::basic_window* wd) :
+			root_wd_(wd)
+		{
+			root_wd_->other.attribute.root->lazy_update = true;
+		}
+
+		~window_proc_guard()
+		{
+			if (!bedrock::instance().wd_manager().available(root_wd_))
+				return;
+
+			root_wd_->other.attribute.root->lazy_update = false;
+			root_wd_->other.attribute.root->update_requesters.clear();
+		}
+	private:
+		detail::basic_window* const root_wd_;
+	};
+
 	LRESULT CALLBACK Bedrock_WIN32_WindowProc(HWND root_window, UINT message, WPARAM wParam, LPARAM lParam)
 	{
 		LRESULT window_proc_value = 0;
@@ -757,6 +780,7 @@ namespace detail
 			bool def_window_proc = false;
 			auto& context = *brock.get_thread_context();
 
+			auto const pre_event_window = context.event_window;
 			auto pressed_wd = root_runtime->condition.pressed;
 			auto pressed_wd_space = root_runtime->condition.pressed_by_space;
 			auto hovered_wd = root_runtime->condition.hovered;
@@ -766,7 +790,10 @@ namespace detail
 			pmdec.raw_param.wparam = wParam;
 
 			internal_scope_guard lock;
-			auto msgwnd = root_runtime->window;
+			auto const root_wd = root_runtime->window;
+			auto msgwnd = root_wd;
+
+			window_proc_guard wp_guard{ root_wd };
 
 			switch (message)
 			{
@@ -775,10 +802,7 @@ namespace detail
 				{
 					auto i = root_runtime->wpassoc->accel_commands.find(LOWORD(wParam));
 					if (i != root_runtime->wpassoc->accel_commands.end())
-					{
-						auto fn = i->second;
-						fn();
-					}
+						i->second();
 				}
 				break;
 			case WM_IME_STARTCOMPOSITION:
@@ -1452,7 +1476,7 @@ namespace detail
 						wd_manager.do_lazy_refresh(msgwnd, false);
 					}
 				}
-				return 0;
+				break;
 			case WM_KEYUP:
 				if(wParam != VK_MENU) //MUST NOT BE AN ALT
 				{
@@ -1553,13 +1577,28 @@ namespace detail
 				def_window_proc = true;
 			}
 
+			if (wd_manager.available(root_wd) && root_wd->other.attribute.root->update_requesters.size())
+			{
+				for (auto wd : root_wd->other.attribute.root->update_requesters)
+				{
+					window_layout::paint(wd, window_layout::paint_operation::have_refreshed, false);
+					wd_manager.map(wd, true);
+				}
+			}
+
 			root_runtime = wd_manager.root_runtime(native_window);
 			if(root_runtime)
 			{
+				context.event_window = pre_event_window;
 				root_runtime->condition.pressed = pressed_wd;
 				root_runtime->condition.hovered = hovered_wd;
 				root_runtime->condition.pressed_by_space = pressed_wd_space;
 			}
+			else
+			{
+				auto context = brock.get_thread_context();
+				if(context) context->event_window = pre_event_window;
+			}
 
 			if (!def_window_proc)
 				return 0;

source/gui/detail/window_layout.cpp

@@ -39,10 +39,6 @@ namespace nana
 				}
 				else
 					_m_paint_glass_window(wd, (paint_operation::try_refresh == operation), req_refresh_children, false, true);
-
-				//maproot and _m_paint_glass_window always copy the children graphics, therefore the mapping requester should
-				//be cleared to avoid redundant copying
-				wd->other.mapping_requester.clear();
 			}
 
 			bool window_layout::maproot(core_window_t* wd, bool have_refreshed, bool req_refresh_children)

source/gui/detail/window_manager.cpp

@@ -1001,28 +1001,7 @@ namespace detail
 			//Thread-Safe Required!
 			std::lock_guard<mutex_type> lock(mutex_);
 			if (impl_->wd_register.available(wd) && !wd->is_draw_through())
-			{
-				auto parent = wd->parent;
-				while (parent)
-				{
-					if(parent->flags.ignore_child_mapping || parent->flags.refreshing)
-					{
-						auto top = parent;
-						while(parent->parent)
-						{
-							parent = parent->parent;
-							if(parent->flags.ignore_child_mapping || parent->flags.refreshing)
-								top = parent;
-						}
-
-						top->other.mapping_requester.push_back(wd);
-						return;
-					}
-					parent = parent->parent;
-				}
-
 				bedrock::instance().flush_surface(wd, forced, update_area);
-			}
 		}
 
 		//update
@@ -1049,8 +1028,11 @@ namespace detail
 				{
 					if (!wd->flags.refreshing)
 					{
-						window_layer::paint(wd, (redraw ? paint_operation::try_refresh : paint_operation::none), false);
-						this->map(wd, forced, update_area);
+						if (!wd->try_lazy_update(redraw))
+						{
+							window_layer::paint(wd, (redraw ? paint_operation::try_refresh : paint_operation::none), false);
+							this->map(wd, forced, update_area);
+						}
 						return true;
 					}
 					else if (forced)
@@ -1097,46 +1079,30 @@ namespace detail
 				{
 					if ((wd->other.upd_state == core_window_t::update_state::refreshed) || (wd->other.upd_state == core_window_t::update_state::request_refresh) || force_copy_to_screen)
 					{
-						window_layer::paint(wd, (wd->other.upd_state == core_window_t::update_state::request_refresh ? paint_operation::try_refresh : paint_operation::have_refreshed), refresh_tree);
-						this->map(wd, force_copy_to_screen);
+						if (!wd->try_lazy_update(wd->other.upd_state == core_window_t::update_state::request_refresh))
+						{
+							window_layer::paint(wd, (wd->other.upd_state == core_window_t::update_state::request_refresh ? paint_operation::try_refresh : paint_operation::have_refreshed), refresh_tree);
+							this->map(wd, force_copy_to_screen);
+						}
 					}
 					else if (effects::edge_nimbus::none != wd->effect.edge_nimbus)
 					{
 						//The window is still mapped because of edge nimbus effect.
 						//Avoid duplicate copy if action state is not changed and the window is not focused.
 						if (wd->flags.action != wd->flags.action_before)
-							this->map(wd, true);
+						{
+							if (!wd->try_lazy_update(false))
+								this->map(wd, true);
+						}
 					}
-
-					//Map the requested children.
-					this->map_requester(wd);
 				}
 				else
 					window_layer::paint(wd, paint_operation::try_refresh, refresh_tree);	//only refreshing if it has an invisible parent
 			}
-			else
-				wd->other.mapping_requester.clear();
 
 			wd->other.upd_state = core_window_t::update_state::none;
 		}
 
-		void window_manager::map_requester(core_window_t* wd)
-		{
-			//Thread-Safe Required!
-			std::lock_guard<mutex_type> lock(mutex_);
-
-			if (false == impl_->wd_register.available(wd))
-				return;
-
-			if (wd->visible_parents())
-			{
-				for(auto requestor : wd->other.mapping_requester)
-					this->map(requestor, true);
-			}
-
-			wd->other.mapping_requester.clear();
-		}
-
 		bool window_manager::set_parent(core_window_t* wd, core_window_t* newpa)
 		{
 			//Thread-Safe Required!