Merge remote-tracking branch 'cnjinhao/hotfix-1.5.5' into hotfix-1.5.5

source/gui/detail/window_layout.cpp

@@ -149,23 +149,24 @@ namespace nana
 			//	reads the overlaps that are overlapped a rectangular block
 			bool window_layout::read_overlaps(core_window_t* wd, const nana::rectangle& vis_rect, std::vector<wd_rectangle>& blocks)
 			{
+				auto const is_wd_root = (category::flags::root == wd->other.category);
 				wd_rectangle block;
 				while (wd->parent)
 				{
-					auto & siblings = wd->parent->children;
-					//It should be checked that whether the window is still a chlid of its parent.
-					if (siblings.size())
+					auto i = std::find(wd->parent->children.cbegin(), wd->parent->children.cend(), wd);
+					if (i != wd->parent->children.cend())
 					{
-						auto i = &(siblings[0]);
-						auto *end = i + siblings.size();
-						i = std::find(i, end, wd);
-						if (i != end)
-						{
-							//find the widget that next to wd.
-							for (++i; i < end; ++i)
+						for (++i; i != wd->parent->children.cend(); ++i)
 						{
 							core_window_t* cover = *i;
-								if ((category::flags::root != cover->other.category) && cover->visible && (nullptr == cover->effect.bground))
+
+							if (!cover->visible)
+								continue;
+
+							if (is_wd_root ? 
+								(category::flags::root == cover->other.category)
+								:
+								((category::flags::root != cover->other.category) && (nullptr == cover->effect.bground)))
 							{
 								if (overlap(vis_rect, rectangle{ cover->pos_root, cover->dimension }, block.r))
 								{
@@ -175,7 +176,7 @@ namespace nana
 							}
 						}
 					}
-					}
+
 					wd = wd->parent;
 				}
 				return (!blocks.empty());

source/gui/filebox.cpp

@@ -435,20 +435,20 @@ namespace nana
 			nodes_.filesystem = tree_.insert("FS.ROOT", "Filesystem");
 			nodes_.filesystem.value(kind::filesystem);
 
-			std::vector<std::string> paths;
-			paths.emplace_back(fs_ext::path_user().native());
-			paths.emplace_back("/");
+			std::vector<std::pair<std::string, treebox::item_proxy>> paths;
+			paths.emplace_back(fs_ext::path_user().native(), nodes_.home);
+			paths.emplace_back("/", nodes_.filesystem);
 
 			fs::directory_iterator end;
 			for (auto & p : paths)
 			{
-				for (fs::directory_iterator i(p); i != end; ++i)
+				for (fs::directory_iterator i{p.first}; i != end; ++i)
 				{
 					auto name = i->path().filename().native();
 					if (!is_directory(i->status()) || (name.size() && name[0] == '.'))
 						continue;
 
-					item_proxy node = tree_.insert(nodes_.filesystem, name, name);
+					item_proxy node = tree_.insert(p.second, name, name);
 					if (false == node.empty())
 					{
 						node.value(kind::filesystem);
@@ -569,29 +569,64 @@ namespace nana
 			if(cat_path.size() && cat_path[cat_path.size() - 1] != '/')
 				cat_path += '/';
 
+		
 			auto beg = head.size();
 			while(true)
 			{
 				auto pos = path.find('/', beg);
 				auto folder = path.substr(beg, pos != path.npos ? pos - beg: path.npos);
-				if(folder.size() == 0) break;
+				
+				if(folder.empty())
+					break;
+				
 				(cat_path += folder) += '/';
 				(head += folder) += '/';
 				path_.caption(cat_path);
 				
+				try
+				{
 					for(fs::directory_iterator i(head); i != end; ++i)
 					{
 						if (is_directory(*i))
 							path_.childset(i->path().filename().native(), 0);
 					}
+				}
+				catch(fs::filesystem_error&)
+				{
+					//The directory iterator may throw filesystem_error when
+					//the user doesn't have permission to access the directory.
+
+					//It just loads the sub-directories
+					//to the category path.
+				}
 
 				if(pos == path.npos)
 					break;
 				beg = pos + 1;
 			}
+
+			try
+			{
 				_m_load_path(path);
 				_m_list_fs();
 			}
+			catch(fs::filesystem_error&)
+			{
+				file_container_.clear();
+
+				drawing dw{ls_file_};
+				dw.clear();
+				dw.draw([](paint::graphics& graph){
+					std::string text = "Permission denied to access the directory";
+					auto txt_sz = graph.text_extent_size(text);
+					auto sz = graph.size();
+
+					graph.string({static_cast<int>(sz.width - txt_sz.width) / 2, static_cast<int>(sz.height - txt_sz.height) / 2}, text, colors::dark_gray);
+				});
+
+				ls_file_.clear();
+			}
+		}
 
 		bool _m_filter_allowed(const std::string& name, bool is_dir, const std::string& filter, const std::vector<std::string>* extension) const
 		{
@@ -611,6 +646,8 @@ namespace nana
 
 		void _m_list_fs()
 		{
+			drawing{ls_file_}.clear();
+
 			auto filter = filter_.caption();
 			ls_file_.auto_draw(false);
 
@@ -828,17 +865,31 @@ namespace nana
 
 					auto child = node.append(name, name, kind::filesystem);
 					if(!child.empty())
+					{
+						//The try-catch can be eleminated by using
+						//directory_iterator( const std::filesystem::path& p, std::error_code& ec ) noexcept;
+						//in C++17
+						try
 						{
 							for(fs::directory_iterator u(i->path()); u != end; ++u)
 							{
-							auto uname = i->path().filename().native();
-							if ((!is_directory(*i)) || (uname.size() && uname[0] == '.'))
+								auto uname = u->path().filename().native();
+								if ((!is_directory(*u)) || (uname.size() && uname[0] == '.'))
 									continue;
 
 								child.append(uname, uname, kind::filesystem);
 								break;
 							}
 						}
+						catch(fs::filesystem_error&)
+						{
+							//The directory iterator may throw filesystem_error when
+							//the user doesn't have permission to access the directory.
+
+							//Catch the error without any process, because the loop is just
+							//to peak whether the directory(i->path) has a sub-directory.
+						}
+					}
 				}
 			}
 		}

source/gui/widgets/treebox.cpp

@@ -1825,7 +1825,6 @@ namespace nana
 					item_locator nl(impl_, xpos, arg.pos.x, arg.pos.y);
 					impl_->attr.tree_cont.for_each<item_locator&>(shape.first, nl);
 
-					bool has_redraw = false;
 
 					auto & node_state = impl_->node_state;
 					node_state.pressed_node = nl.node();
@@ -1834,22 +1833,18 @@ namespace nana
 					{
 						if(impl_->set_expanded(node_state.pressed_node, !node_state.pressed_node->value.second.expanded))
 							impl_->make_adjust(node_state.pressed_node, 0);
-
-						has_redraw = true;	//btw, don't select the node
 					}
-					
-					if ((!has_redraw) && (node_state.selected != node_state.pressed_node))
+					else if (node_state.selected != node_state.pressed_node)
 					{
 						impl_->set_selected(node_state.pressed_node);
-						has_redraw = true;
 					}
+					else
+						return;
+
 					
-					if(has_redraw)
-					{
 					impl_->draw(true);
 					API::dev::lazy_refresh();
 				}
-				}
 
 				void trigger::mouse_up(graph_reference, const arg_mouse& arg)
 				{

source/paint/graphics.cpp

@@ -240,12 +240,16 @@ namespace paint
 		graphics::graphics(graphics&& other)
 			: impl_(std::move(other.impl_))
 		{
+			other.impl_.reset(new implementation);
 		}
 
 		graphics& graphics::operator=(graphics&& other)
 		{
 			if (this != &other)
+			{
 				impl_ = std::move(other.impl_);
+				other.impl_.reset(new implementation);
+			}
 
 			return *this;
 		}