00001 /* $Id: slider.hpp 23842 2008-02-16 08:47:16Z mordante $ */ 00002 /* 00003 Copyright (C) 2003 - 2008 by David White <dave@whitevine.net> 00004 Part of the Battle for Wesnoth Project http://www.wesnoth.org/ 00005 00006 This program is free software; you can redistribute it and/or modify 00007 it under the terms of the GNU General Public License version 2 00008 or at your option any later version. 00009 This program is distributed in the hope that it will be useful, 00010 but WITHOUT ANY WARRANTY. 00011 00012 See the COPYING file for more details. 00013 */ 00014 #ifndef SLIDER_HPP_INCLUDED 00015 #define SLIDER_HPP_INCLUDED 00016 00017 #include "SDL.h" 00018 00019 #include "../sdl_utils.hpp" 00020 00021 #include "widget.hpp" 00022 00023 #include <vector> 00024 00025 namespace gui { 00026 00027 class slider : public widget 00028 { 00029 public: 00030 slider(CVideo &video); 00031 00032 void set_min(int value); 00033 void set_max(int value); 00034 void set_value(int value); 00035 void set_increment(int increment); 00036 00037 int value() const; 00038 int max_value() const; 00039 int min_value() const; 00040 00041 bool value_change(); 00042 00043 virtual void enable(bool new_val=true); 00044 00045 //VC++ doesn't like a 'using scrollarea::set_location' directive here, so we declare 00046 //an inline forwarding function instead 00047 void set_location(int x, int y) { widget::set_location(x,y); } 00048 virtual void set_location(SDL_Rect const &rect); 00049 00050 protected: 00051 bool requires_event_focus(const SDL_Event *event=NULL) const; 00052 virtual void handle_event(const SDL_Event& event); 00053 virtual void draw_contents(); 00054 00055 private: 00056 void mouse_motion(const SDL_MouseMotionEvent& event); 00057 void mouse_down(const SDL_MouseButtonEvent& event); 00058 void set_slider_position(int x); 00059 SDL_Rect slider_area() const; 00060 surface image_, highlightedImage_; 00061 00062 int min_; 00063 int max_; 00064 int value_; 00065 int increment_; 00066 00067 bool value_change_; 00068 00069 enum STATE { UNINIT, NORMAL, ACTIVE, CLICKED, DRAGGED }; 00070 STATE state_; 00071 }; 00072 00073 00074 template<typename T> 00075 class list_slider : public slider 00076 { 00077 public: 00078 list_slider(CVideo &video); 00079 list_slider(CVideo &video, const std::vector<T> &items); 00080 void set_items(const std::vector<T> &items); 00081 bool select_item(const T& item); //use select_item() instead of set_value() 00082 const T& item_selected() const; //use item_selected() instead of value() 00083 private: 00084 std::vector<T> items_; 00085 }; 00086 00087 } 00088 00089 #endif
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