1 files changed, 54 insertions, 0 deletions
diff --git a/src/ui/ThemeManager.cpp b/src/ui/ThemeManager.cpp
index 993edc34..9311a3df 100644
--- a/src/ui/ThemeManager.cpp
+++ b/src/ui/ThemeManager.cpp
@@ -1 +1,55 @@
 #include "cru/ui/ThemeManager.hpp"
+
+#include "Helper.hpp"
+#include "cru/common/StringUtil.hpp"
+#include "cru/platform/graphics/Brush.hpp"
+#include "cru/platform/graphics/Factory.hpp"
+#include "cru/platform/gui/UiApplication.hpp"
+
+namespace cru::ui {
+ThemeManager* ThemeManager::GetInstance() {
+  static ThemeManager instance;
+  return &instance;
+}
+
+ThemeManager::ThemeManager() { Init(); }
+
+void ThemeManager::Init() {
+  theme_tree_.put("scrollbar.collapse-thumb.color",
+                  colors::gray.WithAlpha(128).ToUtf8String());
+  theme_tree_.put("scrollbar.arrow.normal.color", "black");
+  theme_tree_.put("scrollbar.arrow.hover.color", "black");
+  theme_tree_.put("scrollbar.arrow.press.color", "black");
+  theme_tree_.put("scrollbar.arrow.disable.color", "black");
+  theme_tree_.put("scrollbar.arrow-background.normal.color", "seashell");
+  theme_tree_.put("scrollbar.arrow-background.hover.color", "seashell");
+  theme_tree_.put("scrollbar.arrow-background.press.color", "seashell");
+  theme_tree_.put("scrollbar.arrow-background.disable.color", "seashell");
+  theme_tree_.put("scrollbar.slot.normal.color", "seashell");
+  theme_tree_.put("scrollbar.slot.hover.color", "seashell");
+  theme_tree_.put("scrollbar.slot.press.color", "seashell");
+  theme_tree_.put("scrollbar.slot.disable.color", "seashell");
+  theme_tree_.put("scrollbar.thumb.normal.color", "gray");
+  theme_tree_.put("scrollbar.thumb.hover.color", "gray");
+  theme_tree_.put("scrollbar.thumb.press.color", "gray");
+  theme_tree_.put("scrollbar.thumb.disable.color", "gray");
+}
+
+gsl::not_null<std::shared_ptr<platform::graphics::IBrush>>
+ThemeManager::GetBrush(std::u16string key) {
+  std::u16string k = ToLower(key);
+  auto cached_brush_iter = brushes_.find(k);
+  if (cached_brush_iter != brushes_.cend()) {
+    return cached_brush_iter->second;
+  }
+
+  auto color_string = ToUtf16(theme_tree_.get_value<std::string>(ToUtf8(key)));
+  auto color = Color::Parse(color_string);
+  if (!color) throw BadThemeResourceException("Value is not a valid color.");
+  std::shared_ptr<platform::graphics::IBrush> brush =
+      GetUiApplication()->GetGraphFactory()->CreateSolidColorBrush(*color);
+  brushes_[k] = brush;
+  return brush;
+}
+
+}  // namespace cru::ui