1 files changed, 53 insertions, 21 deletions

diff --git a/src/ui/ui_layer.h b/src/ui/ui_layer.h
index 62b4104..eac5273 100644
--- a/src/ui/ui_layer.h
+++ b/src/ui/ui_layer.h
@@ -3,40 +3,65 @@
 #include "workspace.h"
 #include "rendering/view.h"
 
+#include <string>
+
+struct ImFont;
+
 namespace Donut
 {
+    enum class Tab   { Simulation, SceneEditor, Export };
+    enum class Panel { Outliner, Properties, BlackHole, Settings, Export, Stats };
+    inline constexpr int kTabCount   = 3;
+    inline constexpr int kPanelCount = 6;
+
     class UILayer
     {
     public:
-        UILayer() = default;
+        UILayer();
+
+        auto init() -> void;
         auto draw(const UIContext& ctx) -> View;
 
     private:
-        enum class Mode { Scene, Simulation };
-        enum class Layout { Simulation, SceneEditing, Export };
+        struct TabState
+        {
+            Tab          id    = Tab::Simulation;
+            const char*  label = nullptr;
+            const char*  key   = nullptr;
+            View         view  = View::BlackHole;
+            unsigned int dock_id = 0;
+            std::string  name[kPanelCount];
+            bool         allowed[kPanelCount]  = {};
+            bool         defaults[kPanelCount] = {};
+            bool         show[kPanelCount]     = {};
+            bool         reset     = false;
+            bool         appearing = false;
+        };
 
         auto draw_menu_bar(const UIContext& ctx) -> void;
-        auto build_layout(unsigned int dockspace_id) -> void;
-        auto apply_layout(Layout layout) -> void;
+        auto draw_tab_strip() -> void;
+        auto draw_status_bar(const UIContext& ctx) -> void;
+        auto build_layout(TabState& tab) -> void;
+        auto request_tab(int index) -> void { m_tab_request = index; }
+        auto sync_persisted() -> void;
 
-        auto panel_outliner(const UIContext& ctx) -> void;
-        auto panel_properties(const UIContext& ctx) -> void;
-        auto panel_black_hole(const UIContext& ctx) -> void;
-        auto panel_settings(const UIContext& ctx) -> void;
-        auto panel_export(const UIContext& ctx) -> void;
-        auto panel_stats(const UIContext& ctx) -> void;
+        auto begin_panel(TabState& tab, Panel p) -> bool;
+        auto draw_panel(const UIContext& ctx, TabState& tab, Panel p) -> void;
+        auto panel_outliner(const UIContext& ctx, TabState& tab) -> void;
+        auto panel_properties(const UIContext& ctx, TabState& tab) -> void;
+        auto panel_black_hole(const UIContext& ctx, TabState& tab) -> void;
+        auto panel_settings(const UIContext& ctx, TabState& tab) -> void;
+        auto panel_export(const UIContext& ctx, TabState& tab) -> void;
+        auto panel_stats(const UIContext& ctx, TabState& tab) -> void;
 
-        Mode   m_mode   = Mode::Simulation;
-        Layout m_layout = Layout::Simulation;
-        bool   m_rebuild_layout = false;
-        bool   m_first_frame    = true;
+        auto section(const char* title, bool default_open = true) -> bool;
+        auto caption(const char* text) -> void;
+        auto segmented(const char* id, const char* const* labels, int count, int& value) -> bool;
 
-        bool m_show_outliner   = false;
-        bool m_show_properties = false;
-        bool m_show_black_hole = true;
-        bool m_show_settings   = false;
-        bool m_show_export     = false;
-        bool m_show_stats      = true;
+        TabState m_tabs[kTabCount];
+        int      m_active_tab  = 0;
+        int      m_tab_request = -1;
+        bool     m_first_frame = true;
 
         int   m_gizmo_op = 0;
 
@@ -45,5 +70,12 @@ namespace Donut
         bool m_exp_color = true, m_exp_redshift = false, m_exp_temperature = false, m_exp_impact = false;
         int  m_exp_resolution = 1, m_exp_format = 0;
         int  m_exp_written = 0; bool m_exp_reported = false;
+
+        ImFont* m_font_body    = nullptr;
+        ImFont* m_font_heading = nullptr;
+
+        static constexpr int kFrameHist = 120;
+        float m_frame_hist[kFrameHist] = {};
+        int   m_frame_hist_i = 0;
     };
 }