-/* $Id$
-
-This file is part of libmspgltk
-Copyright © 2007-2009 Mikko Rasa, Mikkosoft Productions
-Distributed under the LGPL
-*/
-
#ifndef MSP_GLTK_LIST_H_
#define MSP_GLTK_LIST_H_
+#include <memory>
+#include <stdexcept>
+#include <typeinfo>
#include <sigc++/signal.h>
#include "container.h"
-#include "vslider.h"
+#include "label.h"
+#include "listdata.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:
- class Loader: public Widget::Loader
+ enum ViewMode
+ {
+ LIST,
+ GRID
+ };
+
+ static constexpr size_t INVALID_INDEX = std::numeric_limits<size_t>::max();
+
+ class Loader: public DataFile::DerivedObjectLoader<List, Widget::Loader>
{
public:
Loader(List &);
+
private:
void item(const std::string &);
};
private:
- std::vector<std::string> items;
- int sel_index;
- unsigned first;
- unsigned n_visible;
- unsigned row_height;
+ /// This exists to make disconnecting signals easier
+ class DataObserver: public sigc::trackable
+ {
+ private:
+ List &list;
+
+ public:
+ DataObserver(List &);
+
+ void item_added(std::size_t);
+ void item_removed(std::size_t);
+ void cleared();
+ void refresh_item(std::size_t);
+ };
+
+public:
+ class Item: virtual public Widget, protected Container
+ {
+ protected:
+ Item();
+
+ public:
+ const char *get_class() const override { return "listitem"; }
+
+ protected:
+ void autosize_special(const Part &, Geometry &) const override;
+ public:
+ void set_active(bool);
+
+ void render_special(const Part &, GL::Renderer &) const override;
+ };
+
+ class SimpleItem: public Item
+ {
+ protected:
+ SimpleItem() = default;
+
+ void on_style_change() override;
+ };
+
+ class MultiColumnItem: public Item
+ {
+ protected:
+ MultiColumnItem() = default;
+
+ virtual void check_widths(std::vector<unsigned> &) const;
+ virtual void set_widths(const std::vector<unsigned> &);
+
+ void on_style_change() override;
+ };
+
+private:
+ class BasicItem: public SimpleItem
+ {
+ private:
+ Label label;
+
+ public:
+ BasicItem(const std::string &);
+ };
+
+ class ItemFactory
+ {
+ protected:
+ ItemFactory() = default;
+ public:
+ virtual ~ItemFactory() = default;
- const Part *items_part;
+ virtual void set_data(const ListData &) = 0;
+ virtual std::unique_ptr<Item> create_item(std::size_t) const = 0;
+ };
+
+ template<typename I>
+ class TypedItemFactory: public ItemFactory
+ {
+ private:
+ typedef typename I::ValueType ValueType;
+
+ const ListDataStore<ValueType> *data;
+
+ public:
+ TypedItemFactory(const ListData &d) { set_data(d); }
+
+ void set_data(const ListData &d) override
+ {
+ if(const ListDataStore<ValueType> *ds = dynamic_cast<const ListDataStore<ValueType> *>(&d))
+ data = ds;
+ else
+ throw incompatible_data(typeid(ValueType));
+ }
+
+ std::unique_ptr<Item> create_item(std::size_t i) const override
+ {
+ return std::make_unique<I>(data->get(i));
+ }
+ };
+
+ struct Row
+ {
+ std::size_t first;
+ unsigned height;
+
+ Row(std::size_t f): first(f), height(0) { }
+ };
+
+public:
+ sigc::signal<void, std::size_t> signal_item_selected;
+ sigc::signal<void> signal_selection_cleared;
+
+private:
+ std::unique_ptr<ListData> own_data;
+ ListData *data = nullptr;
+ std::unique_ptr<DataObserver> observer = nullptr;
+ std::unique_ptr<ItemFactory> item_factory = nullptr;
+ ViewMode view_mode = LIST;
+ std::size_t sel_index = INVALID_INDEX;
+ std::size_t focus_index = INVALID_INDEX;
+ std::size_t first_row = 0;
+ std::size_t 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<std::unique_ptr<Item>> items;
+ std::vector<Row> rows;
+ List(std::unique_ptr<ListData>);
public:
- sigc::signal<void, unsigned, const std::string &> signal_item_selected;
+ List();
+ List(ListData &);
+
+ const char *get_class() const override { return "list"; }
- List(const Resources &);
+private:
+ void autosize_special(const Part &, Geometry &) const override;
- void append(const std::string &);
- void insert(unsigned, const std::string &);
- void remove(unsigned);
- void clear();
- unsigned get_n_items() const { return items.size(); }
+public:
+ void set_data(ListData &);
+ ListData &get_data() { return *data; }
+ const ListData &get_data() const { return *data; }
+private:
+ void items_changed();
- void set_selected_index(int);
- const std::string &get_selected() const;
+public:
+ template<typename I>
+ void set_item_type() { item_factory = std::make_unique<TypedItemFactory<I>>(*data); }
+private:
+ std::unique_ptr<Item> create_item(std::size_t);
+
+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(std::size_t);
int get_selected_index() const { return sel_index; }
+private:
+ void set_selected_item(Widget *);
- virtual void button_press(int, int, unsigned);
+ void rebuild_special(const Part &) override;
+ void render_special(const Part &, GL::Renderer &) const override;
+public:
+ bool key_press(unsigned, unsigned) override;
+ void button_press(int, int, unsigned) override;
+ void touch_press(int, int, unsigned) override;
+ void touch_release(int, int, unsigned) override;
+ void touch_motion(int, int, unsigned) override;
+ void focus_in() override;
+ bool navigate(Navigation) override;
private:
- virtual const char *get_class() const { return "list"; }
- virtual void render_special(const Part &) const;
+ void on_style_change() override;
- virtual void on_geometry_change();
- virtual void on_style_change();
- void reposition_slider();
- void recalculate_parameters();
+ void move_focus(Navigation, bool);
+ void set_focus_index(std::size_t);
+
+ void item_autosize_changed(Item *);
+ void reposition_items(bool);
+ std::size_t last_to_first_row(std::size_t) const;
+ std::size_t item_index_to_row(std::size_t) const;
+ void check_view_range();
+ void scroll_to_focus();
void slider_value_changed(double);
+ static void adjust_index(std::size_t &, std::size_t, std::ptrdiff_t);
};
+MSPGLTK_API void operator>>(const LexicalConverter &, List::ViewMode &);
+
} // namespace GLtk
} // namespace Msp
projects / libs / gltk.git / blobdiff