add gui examples.

inc/hgl/gui/Form.h

@@ -14,12 +14,14 @@ namespace hgl
          */
         class Form:public Widget
         {
-        protected:  //每个窗体独立一个FBO存在，所以每个窗体会有自己的RenderTarget与pipeline
+        protected:
 
         public:
 
             Form(ThemeEngine *te=nullptr):Widget(nullptr,te){}
             virtual ~Form()=default;
+
+
         };//class Form
     }//namespace gui
 }//namespace hgl

inc/hgl/gui/ThemeEngine.h

@@ -13,6 +13,8 @@ namespace hgl
             class GPUDevice;
         }//namespace vulkan
 
+        constexpr VkFormat DefaultRenderTargetFormat=UFMT_ABGR8;                ///<缺省窗体绘图表面格式
+
         class ThemeEngine
         {
         protected:
@@ -21,6 +23,12 @@ namespace hgl
 
             MapObject<Form *,ThemeForm> form_list;
 
+            RenderTarget *CreateRenderTarget(const uint32_t,const uint32_t,const VkFormat);
+
+        protected:
+
+            virtual bool ThemeRender(Form *)=0;
+
         public:
 
             ThemeEngine(GPUDevice *dev){device=dev;}
@@ -28,11 +36,11 @@ namespace hgl
 
             virtual bool Init()=0;
             virtual void Clear()=0;
-            
-            virtual bool Registry(Form *)=0;
-            virtual void Unregistry(Form *)=0;
-            virtual void Render(Form *)=0;
-            virtual bool Resize(Form *,const uint32_t,const uint32_t);
+
+            virtual bool Registry(Form *,const VkFormat format=DefaultRenderTargetFormat);
+            virtual void Unregistry(Form *);
+            virtual bool Resize(Form *,const uint32_t,const uint32_t,const VkFormat format=DefaultRenderTargetFormat);
+            virtual void Render(Form *);
         };//class ThemeEngine
 
 //        ThemeEngine *CreateThemeEngine();                   

inc/hgl/gui/ThemeForm.h

@@ -8,18 +8,26 @@ namespace hgl
 {
     namespace gui
     {
+        using namespace hgl::graph;
+
         class ThemeForm
         {
         protected:
         
             Form *form;
-            hgl::graph::RenderTarget *render_target;
+            RenderTarget *render_target;
 
         public:
 
-            ThemeForm(Form *);
+            ThemeForm(Form *,RenderTarget *);
+            virtual ~ThemeForm();
+
+            RenderTarget *  GetRenderTarget(){return render_target;}
+            bool            SetRenderTarget(RenderTarget *);
+
+            void            Resize(uint w,uint h);
+
 
-            void SetRenderTarget(hgl::graph::RenderTarget *);
         };//class ThemeForm
     }//namespace gui
 }//namespace hgl

inc/hgl/gui/Widget.h

@@ -52,12 +52,14 @@ namespace hgl
             void                SetPosition (const RectScope2i &);
             void                SetSize     (const Vector2f &);
 
+        public: //事件
+
+            virtual void OnResize(uint,uint);
+
         public:
 
             Widget(Widget *parent=nullptr,ThemeEngine *te=nullptr);
             virtual ~Widget()=default;
-
-            virtual void Draw(){}
         };//class Widget
     }//namespace gui
 }//namespace hgl