Implement a grid view mode for List

[libs/gltk.git] / source / list.h

diff --git a/source/list.h b/source/list.h
index 5a95b085ae64c9d22837fea608d65af988135578..1de05f6490b840b06193e9fa4f7ba133fb258dce 100644 (file)
--- a/source/list.h
+++ b/source/list.h
@@ -30,6 +30,12 @@ to allow scrolling through a long list.
 class List: virtual public Widget, private Container
 {
 public:
+       enum ViewMode
+       {
+               LIST,
+               GRID
+       };
+
        class Loader: public DataFile::DerivedObjectLoader<List, Widget::Loader>
        {
        public:
@@ -68,6 +74,12 @@ public:
                virtual void render_special(const Part &, GL::Renderer &) const;
        };
 
+       class SimpleItem: public Item
+       {
+       private:
+               virtual void on_style_change();
+       };
+
        class MultiColumnItem: public Item
        {
        protected:
@@ -79,16 +91,13 @@ public:
        };
 
 private:
-       class BasicItem: public Item
+       class BasicItem: public SimpleItem
        {
        private:
                Label label;
 
        public:
                BasicItem(const std::string &);
-
-       private:
-               virtual void on_style_change();
        };
 
        class ItemFactory
@@ -128,6 +137,14 @@ private:
                }
        };
 
+       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;
@@ -137,15 +154,22 @@ private:
        bool own_data;
        DataObserver *observer;
        ItemFactory *item_factory;
+       ViewMode view_mode;
        int sel_index;
        int focus_index;
-       unsigned first;
+       unsigned first_row;
        unsigned max_scroll;
-       unsigned view_size;
+       unsigned view_rows;
+       unsigned view_columns;
+       const Part *items_part;
        bool ignore_slider_change;
+       bool dragging;
+       int drag_start_x;
+       int drag_start_y;
 
        VSlider slider;
        std::vector<Item *> items;
+       std::vector<Row> rows;
 
 public:
        List();
@@ -179,31 +203,45 @@ 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_style_change();
+
+       void move_focus(Navigation, bool);
        void set_focus_index(int);
 
        void item_autosize_changed(Item *);
-       unsigned last_to_first(unsigned) const;
+       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);
 };
 
+void operator>>(const LexicalConverter &, List::ViewMode &);
+
 } // namespace GLtk
 } // namespace Msp