Add debug layout visual effects.

4 files changed, 47 insertions, 15 deletions

diff --git a/src/ui/control.cpp b/src/ui/control.cpp
index a75cab37..3aa8c7e2 100644
--- a/src/ui/control.cpp
+++ b/src/ui/control.cpp
@@ -2,6 +2,7 @@
 
 #include "window.h"
 #include "graph/graph.h"
+#include "exception.h"
 
 namespace cru {
     namespace ui {
@@ -390,11 +391,15 @@ namespace cru {
 
         void Control::OnDraw(ID2D1DeviceContext* device_context)
         {
-#ifdef CRU_DEBUG_DRAW_CONTROL_BORDER
-            if (GetWindow()->GetDebugDrawControlBorder())
+#ifdef CRU_DEBUG_LAYOUT
+            if (GetWindow()->IsDebugLayout())
             {
-                auto brush = Application::GetInstance()->GetDebugBorderBrush();
-                device_context->DrawRectangle(Convert(GetRect(RectRange::Margin)), brush.Get());
+                const auto resource = Application::GetInstance()->GetDebugLayoutResource();
+                if (padding_geometry_ != nullptr)
+                    device_context->FillGeometry(padding_geometry_.Get(), resource->padding_brush.Get());
+                if (margin_geometry_ != nullptr)
+                    device_context->FillGeometry(margin_geometry_.Get(), resource->margin_brush.Get());
+                device_context->DrawRectangle(Convert(GetRect(RectRange::Margin)), resource->out_border_brush.Get());
             }
 #endif
 
@@ -433,9 +438,31 @@ namespace cru {
 
         }
 
-        void Control::OnSizeChangedCore(SizeChangedEventArgs & args)
+        namespace
         {
+            Microsoft::WRL::ComPtr<ID2D1Geometry> CalculateSquareRingGeometry(const Rect& out, const Rect& in)
+            {
+                const auto d2d1_factory = graph::GraphManager::GetInstance()->GetD2D1Factory();
+                Microsoft::WRL::ComPtr<ID2D1RectangleGeometry> out_geometry;
+                ThrowIfFailed(d2d1_factory->CreateRectangleGeometry(Convert(out), &out_geometry));
+                Microsoft::WRL::ComPtr<ID2D1RectangleGeometry> in_geometry;
+                ThrowIfFailed(d2d1_factory->CreateRectangleGeometry(Convert(in), &in_geometry));
+                Microsoft::WRL::ComPtr<ID2D1PathGeometry> result_geometry;
+                ThrowIfFailed(d2d1_factory->CreatePathGeometry(&result_geometry));
+                Microsoft::WRL::ComPtr<ID2D1GeometrySink> sink;
+                ThrowIfFailed(result_geometry->Open(&sink));
+                ThrowIfFailed(out_geometry->CombineWithGeometry(in_geometry.Get(), D2D1_COMBINE_MODE_EXCLUDE, D2D1::Matrix3x2F::Identity(), sink.Get()));
+                ThrowIfFailed(sink->Close());
+                return result_geometry;
+            }
+        }
 
+        void Control::OnSizeChangedCore(SizeChangedEventArgs & args)
+        {
+#ifdef CRU_DEBUG_LAYOUT
+            margin_geometry_ = CalculateSquareRingGeometry(GetRect(RectRange::Margin), GetRect(RectRange::FullBorder));
+            padding_geometry_ = CalculateSquareRingGeometry(GetRect(RectRange::Padding), GetRect(RectRange::Content));
+#endif
         }
 
         void Control::RaisePositionChangedEvent(PositionChangedEventArgs& args)
diff --git a/src/ui/control.h b/src/ui/control.h
index 18ca4b69..b2321e2b 100644
--- a/src/ui/control.h
+++ b/src/ui/control.h
@@ -399,6 +399,11 @@ namespace cru
             std::unordered_map<String, std::any> additional_properties_{};
 
             bool is_focus_on_pressed_ = true;
+
+#ifdef CRU_DEBUG_LAYOUT
+            Microsoft::WRL::ComPtr<ID2D1Geometry> margin_geometry_;
+            Microsoft::WRL::ComPtr<ID2D1Geometry> padding_geometry_;
+#endif
         };
 
         // Find the lowest common ancestor.
diff --git a/src/ui/window.cpp b/src/ui/window.cpp
index 2bebd7d4..8889e032 100644
--- a/src/ui/window.cpp
+++ b/src/ui/window.cpp
@@ -439,12 +439,12 @@ namespace cru
             }
         }
 
-#ifdef CRU_DEBUG_DRAW_CONTROL_BORDER
-        void Window::SetDebugDrawControlBorder(const bool value)
+#ifdef CRU_DEBUG_LAYOUT
+        void Window::SetDebugLayout(const bool value)
         {
-            if (debug_draw_control_border_ != value)
+            if (debug_layout_ != value)
             {
-                debug_draw_control_border_ = value;
+                debug_layout_ = value;
                 Repaint();
             }
         }
diff --git a/src/ui/window.h b/src/ui/window.h
index b4433e85..e4e89776 100644
--- a/src/ui/window.h
+++ b/src/ui/window.h
@@ -184,13 +184,13 @@ namespace cru {
             Control* ReleaseCurrentMouseCapture();
 
             //*************** region: debug ***************
-#ifdef CRU_DEBUG_DRAW_CONTROL_BORDER
-            bool GetDebugDrawControlBorder() const
+#ifdef CRU_DEBUG_LAYOUT
+            bool IsDebugLayout() const
             {
-                return debug_draw_control_border_;
+                return debug_layout_;
             }
 
-            void SetDebugDrawControlBorder(bool value);
+            void SetDebugLayout(bool value);
 #endif
 
         public:
@@ -276,8 +276,8 @@ namespace cru {
 
             Control* mouse_capture_control_ = nullptr;
 
-#ifdef CRU_DEBUG_DRAW_CONTROL_BORDER
-            bool debug_draw_control_border_ = false;
+#ifdef CRU_DEBUG_LAYOUT
+            bool debug_layout_ = false;
 #endif
         };
     }