X-Git-Url: http://git.tdb.fi/?a=blobdiff_plain;f=source%2Flist.h;h=c0ea6d25a5a0b6353fd36bb45248f02659624610;hb=HEAD;hp=b6cae50c876071747945d01cd8f3d1ee3d7231c1;hpb=2bdaf4955fdb94e73704adcdcf0adc2b353f0ff0;p=libs%2Fgltk.git diff --git a/source/list.h b/source/list.h index b6cae50..5fa687d 100644 --- a/source/list.h +++ b/source/list.h @@ -1,79 +1,248 @@ -/* $Id$ - -This file is part of libmspgltk -Copyright © 2007-2011 Mikko Rasa, Mikkosoft Productions -Distributed under the LGPL -*/ - #ifndef MSP_GLTK_LIST_H_ #define MSP_GLTK_LIST_H_ +#include +#include +#include #include #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::max(); + + class Loader: public DataFile::DerivedObjectLoader { public: Loader(List &); + private: void item(const std::string &); }; - sigc::signal signal_item_selected; +private: + /// 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 &) const; + virtual void set_widths(const std::vector &); + + void on_style_change() override; + }; private: - std::vector items; - int sel_index; - unsigned first; - unsigned n_visible; - unsigned row_height; + 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 std::unique_ptr create_item(std::size_t) const = 0; + }; + + template + class TypedItemFactory: public ItemFactory + { + private: + typedef typename I::ValueType ValueType; + + const ListDataStore *data; + + public: + TypedItemFactory(const ListData &d) { set_data(d); } + + void set_data(const ListData &d) override + { + if(const ListDataStore *ds = dynamic_cast *>(&d)) + data = ds; + else + throw incompatible_data(typeid(ValueType)); + } + + std::unique_ptr create_item(std::size_t i) const override + { + return std::make_unique(data->get(i)); + } + }; - const Part *items_part; + struct Row + { + std::size_t first; + unsigned height; + + Row(std::size_t f): first(f), height(0) { } + }; + +public: + sigc::signal signal_item_selected; + sigc::signal signal_selection_cleared; + +private: + std::unique_ptr own_data; + ListData *data = nullptr; + std::unique_ptr observer = nullptr; + std::unique_ptr 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> items; + std::vector rows; + List(std::unique_ptr); public: List(); + List(ListData &); - virtual const char *get_class() const { return "list"; } + const char *get_class() const override { return "list"; } - virtual void autosize(); +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; - int get_selected_index() const { return sel_index; } +public: + template + void set_item_type() { item_factory = std::make_unique>(*data); } +private: + std::unique_ptr 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: - virtual void render_special(const Part &) const; + void set_selected_item(Widget *); + + void rebuild_special(const Part &) override; + void render_special(const Part &, GL::Renderer &) const override; public: - virtual void button_press(int, int, unsigned); + 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 void on_geometry_change(); - virtual void on_style_change(); + void on_style_change() override; - void reposition_slider(); + 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