X-Git-Url: http://git.tdb.fi/?a=blobdiff_plain;f=source%2Flist.h;h=0938eaf05ee162a59c8407a3d38b9e0765237177;hb=103ceeace366c6d80fce323438b31b9bbc167915;hp=1ecd854c26e048ddd9a10ba6178d2752e5f2b494;hpb=1d84ac50711ce9d23cb1dafd83158d4ffa938a15;p=libs%2Fgltk.git diff --git a/source/list.h b/source/list.h index 1ecd854..0938eaf 100644 --- a/source/list.h +++ b/source/list.h @@ -1,22 +1,44 @@ #ifndef MSP_GLTK_LIST_H_ #define MSP_GLTK_LIST_H_ +#include +#include #include #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: - 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 &); @@ -34,67 +56,197 @@ private: public: DataObserver(List &); - void item_added(unsigned); - void item_removed(unsigned); + void item_added(std::size_t); + void item_removed(std::size_t); void cleared(); - void refresh_strings(); + void refresh_item(std::size_t); }; public: - sigc::signal signal_item_selected; + 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: - ListData *data; - bool own_data; - DataObserver *observer; - int sel_index; - unsigned first; - unsigned n_visible; - unsigned row_height; + class BasicItem: public SimpleItem + { + private: + Label label; + + public: + BasicItem(const std::string &); + }; - const Part *items_part; + class ItemFactory + { + protected: + ItemFactory() = default; + public: + virtual ~ItemFactory() = default; + + virtual void set_data(const ListData &) = 0; + virtual Item *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)); + } + + Item *create_item(std::size_t i) const override + { + return new I(data->get(i)); + } + }; + + 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: + ListData *data = nullptr; + bool own_data = false; + DataObserver *observer = nullptr; + 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 items; + std::vector rows; public: List(); List(ListData &); -private: - void init(); -public: virtual ~List(); - virtual const char *get_class() const { return "list"; } + const char *get_class() const override { return "list"; } - virtual void autosize(); - void autosize_rows(unsigned); - void autosize_all(); +private: + void autosize_special(const Part &, Geometry &) const override; +public: void set_data(ListData &); ListData &get_data() { return *data; } const ListData &get_data() const { return *data; } private: void items_changed(); + public: + template + void set_item_type() + { + ItemFactory *f = new TypedItemFactory(*data); + delete item_factory; + item_factory = f; + } +private: + Item *create_item(std::size_t); - void set_selected_index(int); - int get_selected_index() const { return sel_index; } +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 rebuild_special(const Part &, CachedPart &); - virtual void render_special(const Part &, GL::Renderer &) 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