UI modal windows

1 files changed, 57 insertions, 8 deletions

diff --git a/ui.hpp b/ui.hpp
index 432b615..5c67434 100644
--- a/ui.hpp
+++ b/ui.hpp
@@ -88,6 +88,7 @@ struct UI {
 
 	Heap* heap;
 	Device* device;
+	const App* app;
 	Texture_Id atlas;
 	Shader_Id shader;
 	Vertex_Format_Id vertex_format;
@@ -97,6 +98,8 @@ struct UI {
 	Pipeline* pipeline;
 	Render_Pass* render_pass;
 	Element* root, * hot, * hovered;
+	int area_w, area_h;
+	bool layout_dirty;
 
 	struct UI_CBuffer {
 		m4f projection;
@@ -110,20 +113,27 @@ struct UI {
 	static int text_width(const char* t);
 	static int text_height(const char* t);
 
-	static UI* create(Device* dev, Arena* a, Shader_Id sh);
+	static UI* create(
+		Device* dev,
+		const App* app,
+		Arena* a,
+		Shader_Id sh
+	);
 
 	void init(
 		Device* dev,
+		const App* app,
 		Heap* h,
 		Texture_Id atlas,
 		Shader_Id sh
 	);
 	void destroy();
-	void update(Arena* s, const App& app);
+	void layout(int w, int h);
+	void update(Arena* s);
 	void render(Arena* s, Texture_Id target);
 
-	void draw_container(const Rect& r);
-	void draw_containeri(const Rect& r);
+	void draw_container(const Rect& r, Colour c);
+	void draw_containeri(const Rect& r, Colour c);
 
 	Element* alloc_element(size_t size);
 	template <typename T, typename... Args>
@@ -135,31 +145,48 @@ struct UI {
 
 	struct Message {
 		enum class Type {
-			click
+			click,
+			destroy,
+			activate,
+			deactivate
 		} type;
 	};
 
 	typedef int (*Message_Handler)(Element* e, const Message& m);
 
 	struct Element {
+		struct Flags {
+			enum {
+				disabled = 1 << 0
+			};
+		};
+
 		UI* ui;
 		Element* parent;
-		Element** children;
+		Element* children, * next;
 		Message_Handler handler;
 		Rect bound, clip;
-		int child_count;
+		int flags;
 
 		Element(UI* ui, Element* parent);
 		virtual ~Element();
 
+		void destroy();
+
 		virtual Rect layout(const Rect& avail);
-		void update(const App& app);
+		void update();
+		virtual void on_update();
 		virtual void on_render();
 		virtual void on_message(const Message& msg);
 
 		void add_child(Element* ch);
+		void remove_child(Element* ch);
 		void message(const Message& msg);
 		void render();
+
+		bool enabled();
+		void disable();
+		void enable();
 	};
 
 	struct Container : Element {
@@ -179,8 +206,30 @@ struct UI {
 	struct Button : Element {
 		char* text;
 		Button(UI* ui, Element* parent, const char* label);
+		~Button();
+		Rect layout(const Rect& avail) override;
+		void on_render() override;
+	};
+
+	struct Label : Element {
+		char* text;
+		Label(UI* ui, Element* parent, const char* label);
+		~Label();
+		Rect layout(const Rect& avail) override;
+		void on_render() override;
+	};
+
+	struct Modal : Element {
+		Container* contents;
+		Toolbar* title_bar;
+		Label* title;
+		Button* close;
+		int drag_offset[2];
+		bool dragging;
+		Modal(UI* ui, Element* parent, const char* title);
 		Rect layout(const Rect& avail) override;
 		void on_render() override;
+		void on_update() override;
 	};
 };