SeekBar.hpp

00001 //-----------------------------------------------------------
00002 //  SeekBar class -- Header
00003 //
00004 //  2017/01/25, Copyright (c) 2017 MIKAMI, Naoki
00005 //-----------------------------------------------------------
00006 
00007 #ifndef F746_SEEKBAR_HPP
00008 #define F746_SEEKBAR_HPP
00009 
00010 #include "GuiBase.hpp"
00011 #include "Label.hpp"
00012 
00013 namespace Mikami
00014 {
00015     class SeekBar : public GuiBase
00016     {
00017     public:
00018         enum Orientation { Holizontal, Vertical };
00019 
00020         struct Point
00021         {
00022             uint16_t x, y;
00023             Point(uint16_t x0 = 0, uint16_t y0 = 0) : x(x0), y(y0) {}
00024         };
00025 
00026         // Constructor
00027         SeekBar(uint16_t x, uint16_t y, uint16_t length,
00028                 float min, float max, float initialValue,
00029                 Orientation hv = Holizontal,
00030                 uint32_t thumbColor = 0xFFB0B0FF,
00031                 uint16_t thumbSize = 30, uint16_t width = 4,
00032                 uint32_t colorL = LCD_COLOR_LIGHTGRAY,
00033                 uint32_t colorH = 0xFFB0B0B0,
00034                 uint32_t backColor = GuiBase::ENUM_BACK)
00035             : GuiBase(x, y, Font12, 0, backColor, thumbColor),
00036               L_(length), W_(width),
00037               SIZE_(thumbSize), COLOR_L_(colorL), COLOR_H_(colorH),
00038               MIN_(min), MAX_(max), ORIENT_(hv), v_(initialValue),
00039                 labelOn_(false), slided_(false), active_(true)
00040         {   Draw(initialValue); }
00041 
00042         // Constructor with scale value (only horizontal)
00043         SeekBar(uint16_t x, uint16_t y, uint16_t length,
00044                 float min, float max, float initialValue,
00045                 string left, string center, string right,
00046                 uint32_t thumbColor = 0xFFB0B0FF,
00047                 uint16_t thumbSize = 30, uint16_t width = 4,
00048                 uint32_t colorL = LCD_COLOR_LIGHTGRAY,
00049                 uint32_t colorH = 0xFFB0B0B0,
00050                 uint32_t backColor = GuiBase::ENUM_BACK);
00051 
00052         virtual ~SeekBar()
00053         {   for (int n=0; n<3; n++) delete labelLCR_[n]; }
00054 
00055         bool Slide();
00056         float GetValue() { return v_; }
00057         int GetIntValue() { return Round(v_); }
00058 
00059         void Activate();
00060         void Inactivate();
00061         bool IsActive() { return active_; }
00062 
00063         bool IsOnThumb(uint16_t &x, uint16_t &y);
00064         void Draw(float value, bool fill = false);
00065         void Redraw(bool fill = false);
00066         float ToValue(Point pt);
00067 
00068         void SetValue(float v) { v_ = v; }
00069         void SetSlided(bool tf) { slided_ = tf; }
00070         bool GetSlided() { return slided_; }
00071 
00072     private:
00073         const uint16_t L_, W_;
00074         const uint16_t SIZE_;           // Size of thumb
00075         const uint32_t COLOR_L_, COLOR_H_;
00076         const float MIN_, MAX_;
00077         const Orientation ORIENT_;
00078 
00079         Label *labelLCR_[3];
00080         float v_;             // value of seekbar
00081         bool labelOn_;
00082         bool slided_;
00083         bool active_;
00084 
00085         int Round(float x) { return x + 0.5f - (x < 0); }
00086         Point ToPoint(float value);
00087         float Saturate(float value);
00088 
00089         // disallow copy constructor and assignment operator
00090         SeekBar(const SeekBar&);
00091         SeekBar& operator=(const SeekBar&);
00092     };
00093 }
00094 #endif  // F746_SEEKBAR_HPP
00095