130 lines
3.4 KiB
C++
130 lines
3.4 KiB
C++
#include "pch.h"
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#include "log.h"
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#include "util.h"
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#include "asset.h"
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#include "node.h"
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#include "node_border.h"
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#include "layout.h"
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#include "platform_api/asset_file_load_policy.h"
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void LayoutManager::unload()
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{
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for (auto& l : m_layouts)
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l.second->destroy();
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m_layouts.clear();
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}
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void LayoutManager::create()
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{
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m_layouts[const_hash("main")] = std::make_unique<Node>();
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m_layouts[const_hash("main")]->m_manager = this;
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}
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bool LayoutManager::load(const char* path)
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{
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auto abs_path = Asset::absolute(path);
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const auto file_load = pp::platform::plan_asset_file_load(
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abs_path,
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m_loaded,
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m_file_last_write_time);
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if (!file_load.should_read_file)
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return file_load.skipped_load_result;
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m_file_last_write_time = file_load.last_write_time;
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if (!m_layouts.empty() && on_reloading)
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on_reloading();
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m_path = path;
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Asset file;
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if (!(file.open(path) && file.read_all()))
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return false;
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auto xml_string = std::string((char*)file.m_data, (size_t)file.m_len);
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file.close();
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if (!parse(xml_string))
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return false;
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if (on_loaded)
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on_loaded(m_loaded);
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m_loaded = true;
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return true;
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}
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bool LayoutManager::parse(const std::string& xml_string) noexcept
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{
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auto old = std::move(m_layouts);
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tinyxml2::XMLDocument xml(true, tinyxml2::COLLAPSE_WHITESPACE);
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auto ret = xml.Parse(xml_string.c_str(), xml_string.size());
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if (ret != tinyxml2::XMLError::XML_SUCCESS)
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{
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return false;
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LOG("parsing xml failed");
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}
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tinyxml2::XMLElement* current = xml.RootElement()->FirstChildElement();
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while (current)
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{
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auto id_str = current->Attribute("id");
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if (!id_str)
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{
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LOG("Layout node without id");
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return false;
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}
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if (auto os = current->Attribute("os"))
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{
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auto osv = split(os, ',');
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if (std::find(osv.begin(), osv.end(), PP_OS) == osv.end())
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{
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LOG("Layout %s not for this os(%s), skipping", id_str, PP_OS)
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current = current->NextSiblingElement("layout");
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continue;
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}
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}
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//LOG("Parsing layout: %s", id_str);
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uint16_t id = const_hash(id_str);
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auto p = m_layouts.find(id);
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if (p == m_layouts.end())
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{
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auto& node = m_layouts[id];
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std::string node_name = current->Name();
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node.reset(node_name == "border" ? new NodeBorder : new Node);
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node->set_manager(this);
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// try to copy the old size values
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if (old.count(id))
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{
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const auto& old_node = *old[id];
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YGNodeCopyStyle(node->y_node, old_node.y_node);
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}
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node->load_internal(current);
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}
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else
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{
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LOG("Layout id \"%s\" duplicated", id_str);
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}
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current = current->NextSiblingElement("layout");
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}
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return true;
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}
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bool LayoutManager::reload()
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{
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// avoid conflict when assigning the same string from c_str
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std::string path_copy = m_path;
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return load(path_copy.c_str());
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}
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void LayoutManager::restore_context()
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{
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for (auto& node : m_layouts)
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node.second->restore_context();
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}
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void LayoutManager::clear_context()
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{
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for (auto& node : m_layouts)
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node.second->clear_context();
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}
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