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#include "cru/ui/ThemeManager.hpp"
#include <memory>
#include "Helper.hpp"
#include "cru/common/StringUtil.hpp"
#include "cru/common/io/FileStream.hpp"
#include "cru/common/io/Resource.hpp"
#include "cru/platform/graphics/Brush.hpp"
#include "cru/platform/graphics/Factory.hpp"
#include "cru/platform/gui/UiApplication.hpp"
#include "cru/ui/style/StyleRuleSet.hpp"
#include "cru/xml/XmlParser.hpp"
namespace cru::ui {
ThemeManager* ThemeManager::GetInstance() {
static ThemeManager instance;
return &instance;
}
ThemeManager::ThemeManager() {
std::filesystem::path resourses_file =
cru::io::GetResourceDir() / "cru/ui/DefaultResources.xml";
if (!std::filesystem::exists(resourses_file)) {
throw Exception(u"Default resources file not found.");
}
ReadResourcesFile(String::FromStdPath(resourses_file));
}
ThemeManager::~ThemeManager() {}
std::shared_ptr<platform::graphics::IBrush> ThemeManager::GetResourceBrush(
const String& key) {
return GetResource<std::shared_ptr<platform::graphics::IBrush>>(key);
}
std::shared_ptr<platform::graphics::IFont> ThemeManager::GetResourceFont(
const String& key) {
return GetResource<std::shared_ptr<platform::graphics::IFont>>(key);
}
std::shared_ptr<style::StyleRuleSet> ThemeManager::GetResourceStyleRuleSet(
const String& key) {
return GetResource<std::shared_ptr<style::StyleRuleSet>>(key);
}
void ThemeManager::ReadResourcesFile(const String& file_path) {
io::FileStream stream(file_path, io::OpenFileFlags::Read);
auto xml_string = stream.ReadAllAsString();
auto parser = xml::XmlParser(xml_string);
theme_resource_xml_root_.reset(parser.Parse());
theme_resource_map_.clear();
if (!theme_resource_xml_root_->GetTag().CaseInsensitiveEqual(u"Theme")) {
throw Exception(u"Root tag of theme resource file must be \"Theme\".");
}
for (auto child : theme_resource_xml_root_->GetChildren()) {
if (child->IsElementNode()) {
auto c = child->AsElement();
if (c->GetTag().CaseInsensitiveEqual(u"Resource")) {
auto key_attr = c->GetOptionalAttributeCaseInsensitive(u"key");
if (!key_attr) {
throw Exception(u"\"key\" attribute is required for resource.");
}
theme_resource_map_[*key_attr] = c->GetFirstChildElement();
}
}
}
}
} // namespace cru::ui
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