X-Git-Url: http://git.tdb.fi/?a=blobdiff_plain;f=source%2Flist.h;h=37d4d7a33201bdf80894508bd8ab8dd58a962fa2;hb=83f553a382ce554951594de85e4fd7b854305463;hp=14d9eac291e3bb2b7daee7c9862a268108689182;hpb=3f77f3542a6405fd832ababe48b950d1a65b00ed;p=libs%2Fgltk.git

diff --git a/source/list.h b/source/list.h
index 14d9eac..37d4d7a 100644
--- a/source/list.h
+++ b/source/list.h
@@ -1,22 +1,41 @@
 #ifndef MSP_GLTK_LIST_H_
 #define MSP_GLTK_LIST_H_
 
+#include <stdexcept>
+#include <typeinfo>
 #include <sigc++/signal.h>
 #include "container.h"
 #include "label.h"
 #include "listdata.h"
-#include "vslider.h"
+#include "mspgltk_api.h"
+#include "slider.h"
 
 namespace Msp {
 namespace GLtk {
 
+/**
+Thrown if a list's item type is incompatible with its data.
+*/
+class MSPGLTK_API incompatible_data: public std::logic_error
+{
+public:
+	incompatible_data(const std::type_info &);
+};
+
+
 /**
 Shows a list of items, allowing the user to select one.  A slider is included
 to allow scrolling through a long list.
 */
-class List: virtual public Widget, private Container
+class MSPGLTK_API List: virtual public Widget, private Container
 {
 public:
+	enum ViewMode
+	{
+		LIST,
+		GRID
+	};
+
 	class Loader: public DataFile::DerivedObjectLoader<List, Widget::Loader>
 	{
 	public:
@@ -41,60 +60,132 @@ private:
 		void refresh_item(unsigned);
 	};
 
-protected:
-	class Item: public Container
+public:
+	class Item: virtual public Widget, protected Container
 	{
+	protected:
+		Item();
+
 	public:
 		virtual const char *get_class() const { return "listitem"; }
 
 	protected:
-		virtual void autosize_special(const Part &, Geometry &);
+		virtual void autosize_special(const Part &, Geometry &) const;
 	public:
 		void set_active(bool);
 
 		virtual void render_special(const Part &, GL::Renderer &) const;
 	};
 
-public:
-	class BasicItem: public Item
+	class SimpleItem: public Item
+	{
+	protected:
+		SimpleItem() = default;
+
+		virtual void on_style_change();
+	};
+
+	class MultiColumnItem: public Item
+	{
+	protected:
+		MultiColumnItem() = default;
+
+		virtual void check_widths(std::vector<unsigned> &) const;
+		virtual void set_widths(const std::vector<unsigned> &);
+
+		virtual void on_style_change();
+	};
+
+private:
+	class BasicItem: public SimpleItem
 	{
 	private:
 		Label label;
 
 	public:
 		BasicItem(const std::string &);
+	};
+
+	class ItemFactory
+	{
+	protected:
+		ItemFactory() = default;
+	public:
+		virtual ~ItemFactory() = default;
+
+		virtual void set_data(const ListData &) = 0;
+		virtual Item *create_item(unsigned) const = 0;
+	};
 
+	template<typename I>
+	class TypedItemFactory: public ItemFactory
+	{
 	private:
-		virtual void on_style_change();
+		typedef typename I::ValueType ValueType;
+
+		const ListDataStore<ValueType> *data;
+
+	public:
+		TypedItemFactory(const ListData &d)
+		{ set_data(d); }
+
+		virtual void set_data(const ListData &d)
+		{
+			if(const ListDataStore<ValueType> *ds = dynamic_cast<const ListDataStore<ValueType> *>(&d))
+				data = ds;
+			else
+				throw incompatible_data(typeid(ValueType));
+		}
+
+		virtual Item *create_item(unsigned i) const
+		{
+			return new I(data->get(i));
+		}
+	};
+
+	struct Row
+	{
+		unsigned first;
+		unsigned height;
+
+		Row(unsigned f): first(f), height(0) { }
 	};
 
 public:
 	sigc::signal<void, unsigned> signal_item_selected;
+	sigc::signal<void> signal_selection_cleared;
 
 private:
-	ListData *data;
-	bool own_data;
-	DataObserver *observer;
-	int sel_index;
-	unsigned first;
-	unsigned max_scroll;
-	unsigned view_size;
+	ListData *data = nullptr;
+	bool own_data = false;
+	DataObserver *observer = nullptr;
+	ItemFactory *item_factory = nullptr;
+	ViewMode view_mode = LIST;
+	int sel_index = -1;
+	int focus_index = -1;
+	unsigned first_row = 0;
+	unsigned max_scroll = 0;
+	unsigned view_rows = 5;
+	unsigned view_columns = 5;
+	const Part *items_part = nullptr;
+	bool ignore_slider_change = false;
+	bool dragging = false;
+	int drag_start_x = 0;
+	int drag_start_y = 0;
 
 	VSlider slider;
 	std::vector<Item *> items;
+	std::vector<Row> rows;
 
 public:
 	List();
 	List(ListData &);
-private:
-	void init();
-public:
 	virtual ~List();
 
 	virtual const char *get_class() const { return "list"; }
 
 private:
-	virtual void autosize_special(const Part &, Geometry &);
+	virtual void autosize_special(const Part &, Geometry &) const;
 
 public:
 	void set_data(ListData &);
@@ -102,31 +193,58 @@ public:
 	const ListData &get_data() const { return *data; }
 private:
 	void items_changed();
-protected:
-	virtual Item *create_item(unsigned);
 
 public:
+	template<typename I>
+	void set_item_type()
+	{
+		ItemFactory *f = new TypedItemFactory<I>(*data);
+		delete item_factory;
+		item_factory = f;
+	}
+private:
+	Item *create_item(unsigned);
+
+public:
+	void set_view_mode(ViewMode);
 	void set_view_size(unsigned);
+	void set_view_size(unsigned, unsigned);
 	void set_view_all();
 
 	void set_selected_index(int);
 	int get_selected_index() const { return sel_index; }
-
 private:
+	void set_selected_item(Widget *);
+
+	virtual void rebuild_special(const Part &);
 	virtual void render_special(const Part &, GL::Renderer &) const;
 
 public:
+	virtual bool key_press(unsigned, unsigned);
 	virtual void button_press(int, int, unsigned);
+	virtual void touch_press(int, int, unsigned);
+	virtual void touch_release(int, int, unsigned);
+	virtual void touch_motion(int, int, unsigned);
+	virtual void focus_in();
+	virtual bool navigate(Navigation);
 private:
-	virtual void on_geometry_change();
 	virtual void on_style_change();
 
-	void reposition_slider();
-	void reposition_items();
+	void move_focus(Navigation, bool);
+	void set_focus_index(int);
+
+	void item_autosize_changed(Item *);
+	void reposition_items(bool);
+	unsigned last_to_first_row(unsigned) const;
+	unsigned item_index_to_row(unsigned) const;
 	void check_view_range();
+	void scroll_to_focus();
 	void slider_value_changed(double);
+	static void adjust_index(int &, int, int);
 };
 
+MSPGLTK_API void operator>>(const LexicalConverter &, List::ViewMode &);
+
 } // namespace GLtk
 } // namespace Msp