523 lines
20 KiB
C++
523 lines
20 KiB
C++
/*
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* Portions of this file are copyright Rebirth contributors and licensed as
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* described in COPYING.txt.
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* Portions of this file are copyright Parallax Software and licensed
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* according to the Parallax license below.
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* See COPYING.txt for license details.
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THE COMPUTER CODE CONTAINED HEREIN IS THE SOLE PROPERTY OF PARALLAX
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SOFTWARE CORPORATION ("PARALLAX"). PARALLAX, IN DISTRIBUTING THE CODE TO
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END-USERS, AND SUBJECT TO ALL OF THE TERMS AND CONDITIONS HEREIN, GRANTS A
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ROYALTY-FREE, PERPETUAL LICENSE TO SUCH END-USERS FOR USE BY SUCH END-USERS
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IN USING, DISPLAYING, AND CREATING DERIVATIVE WORKS THEREOF, SO LONG AS
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SUCH USE, DISPLAY OR CREATION IS FOR NON-COMMERCIAL, ROYALTY OR REVENUE
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FREE PURPOSES. IN NO EVENT SHALL THE END-USER USE THE COMPUTER CODE
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CONTAINED HEREIN FOR REVENUE-BEARING PURPOSES. THE END-USER UNDERSTANDS
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AND AGREES TO THE TERMS HEREIN AND ACCEPTS THE SAME BY USE OF THIS FILE.
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COPYRIGHT 1993-1999 PARALLAX SOFTWARE CORPORATION. ALL RIGHTS RESERVED.
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*/
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/*
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*
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* Routines for menus.
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*
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*/
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#pragma once
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#include "fwd-event.h"
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#ifdef __cplusplus
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#include <cstdint>
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#include <algorithm>
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#include <memory>
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#include <tuple>
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#include <utility>
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#include "varutil.h"
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#include "dxxsconf.h"
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#include "fmtcheck.h"
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#include "ntstring.h"
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struct newmenu;
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struct listbox;
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#define NM_TYPE_MENU 0 // A menu item... when enter is hit on this, newmenu_do returns this item number
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#define NM_TYPE_INPUT 1 // An input box... fills the text field in, and you need to fill in text_len field.
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#define NM_TYPE_CHECK 2 // A check box. Set and get its status by looking at flags field (1=on, 0=off)
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#define NM_TYPE_RADIO 3 // Same as check box, but only 1 in a group can be set at a time. Set group fields.
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#define NM_TYPE_TEXT 4 // A line of text that does nothing.
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#define NM_TYPE_NUMBER 5 // A numeric entry counter. Changes value from min_value to max_value;
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#define NM_TYPE_INPUT_MENU 6 // A inputbox that you hit Enter to edit, when done, hit enter and menu leaves.
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#define NM_TYPE_SLIDER 7 // A slider from min_value to max_value. Draws with text_len chars.
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#define NM_MAX_TEXT_LEN 255
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struct newmenu_item
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{
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int type; // What kind of item this is, see NM_TYPE_????? defines
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int value; // For checkboxes and radio buttons, this is 1 if marked initially, else 0
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int min_value, max_value; // For sliders and number bars.
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int group; // What group this belongs to for radio buttons.
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int text_len; // The maximum length of characters that can be entered by this inputboxes
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char *text; // The text associated with this item.
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// The rest of these are used internally by by the menu system, so don't set 'em!!
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short x, y;
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short w, h;
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short right_offset;
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ntstring<NM_MAX_TEXT_LEN> saved_text;
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};
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template <typename T>
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class newmenu_subfunction_t
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{
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public:
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typedef int (*type)(newmenu *menu,const d_event &event, T *userdata);
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};
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typedef newmenu_subfunction_t<void>::type newmenu_subfunction;
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class unused_newmenu_userdata_t;
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static const newmenu_subfunction_t<const unused_newmenu_userdata_t>::type unused_newmenu_subfunction = nullptr;
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static const unused_newmenu_userdata_t *const unused_newmenu_userdata = nullptr;
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int newmenu_do2(const char *title, const char *subtitle, uint_fast32_t nitems, newmenu_item *item, newmenu_subfunction subfunction, void *userdata, int citem, const char *filename);
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// Pass an array of newmenu_items and it processes the menu. It will
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// return a -1 if Esc is pressed, otherwise, it returns the index of
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// the item that was current when Enter was was selected.
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// The subfunction function accepts standard events, plus additional
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// NEWMENU events in future. Just pass NULL if you don't want this,
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// or return 0 where you don't want to override the default behaviour.
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// Title draws big, Subtitle draw medium sized. You can pass NULL for
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// either/both of these if you don't want them.
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// Same as above, only you can pass through what background bitmap to use.
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template <typename T>
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int newmenu_do2(const char *title, const char *subtitle, uint_fast32_t nitems, newmenu_item *item, typename newmenu_subfunction_t<T>::type subfunction, T *userdata, int citem, const char *filename)
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{
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return newmenu_do2(title, subtitle, nitems, item, reinterpret_cast<newmenu_subfunction_t<void>::type>(subfunction), static_cast<void *>(userdata), citem, filename );
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}
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template <typename T>
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int newmenu_do2(const char *title, const char *subtitle, uint_fast32_t nitems, newmenu_item *item, typename newmenu_subfunction_t<const T>::type subfunction, const T *userdata, int citem, const char *filename)
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{
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return newmenu_do2(title, subtitle, nitems, item, reinterpret_cast<newmenu_subfunction_t<void>::type>(subfunction), static_cast<void *>(const_cast<T *>(userdata)), citem, filename );
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}
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template <typename T>
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static inline int newmenu_do( const char * title, const char * subtitle, uint_fast32_t nitems, newmenu_item * item, typename newmenu_subfunction_t<T>::type subfunction, T *userdata )
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{
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return newmenu_do2( title, subtitle, nitems, item, subfunction, userdata, 0, NULL );
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}
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template <std::size_t N, typename T>
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static inline int newmenu_do(const char *title, const char *subtitle, array<newmenu_item, N> &items, typename newmenu_subfunction_t<T>::type subfunction, T *userdata)
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{
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return newmenu_do(title, subtitle, items.size(), &items.front(), subfunction, userdata);
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}
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// Same as above, only you can pass through what item is initially selected.
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template <typename T>
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static inline int newmenu_do1( const char * title, const char * subtitle, uint_fast32_t nitems, newmenu_item * item, typename newmenu_subfunction_t<T>::type subfunction, T *userdata, int citem )
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{
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return newmenu_do2( title, subtitle, nitems, item, subfunction, userdata, citem, NULL );
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}
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newmenu *newmenu_do4( const char * title, const char * subtitle, uint_fast32_t nitems, newmenu_item * item, newmenu_subfunction subfunction, void *userdata, int citem, const char * filename, int TinyMode, int TabsFlag );
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static inline newmenu *newmenu_do3( const char * title, const char * subtitle, uint_fast32_t nitems, newmenu_item * item, newmenu_subfunction subfunction, void *userdata, int citem, const char * filename )
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{
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return newmenu_do4( title, subtitle, nitems, item, subfunction, userdata, citem, filename, 0, 0 );
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}
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// Same as above, but returns menu instead of citem
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template <typename T>
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static newmenu *newmenu_do3(const char *title, const char *subtitle, uint_fast32_t nitems, newmenu_item *item, typename newmenu_subfunction_t<T>::type subfunction, T *userdata, int citem, const char *filename)
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{
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return newmenu_do3(title, subtitle, nitems, item, reinterpret_cast<newmenu_subfunction_t<void>::type>(subfunction), static_cast<void *>(userdata), citem, filename);
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}
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template <typename T>
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static newmenu *newmenu_do3(const char *title, const char *subtitle, uint_fast32_t nitems, newmenu_item *item, typename newmenu_subfunction_t<const T>::type subfunction, const T *userdata, int citem, const char *filename)
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{
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return newmenu_do3(title, subtitle, nitems, item, reinterpret_cast<newmenu_subfunction_t<void>::type>(subfunction), static_cast<void *>(const_cast<T *>(userdata)), citem, filename);
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}
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static inline newmenu *newmenu_dotiny( const char * title, const char * subtitle, uint_fast32_t nitems, newmenu_item * item, int TabsFlag, newmenu_subfunction subfunction, void *userdata )
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{
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return newmenu_do4( title, subtitle, nitems, item, subfunction, userdata, 0, NULL, 1, TabsFlag );
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}
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// Tiny menu with GAME_FONT
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template <typename T>
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static newmenu *newmenu_dotiny(const char * title, const char * subtitle, uint_fast32_t nitems, newmenu_item * item, int TabsFlag, typename newmenu_subfunction_t<T>::type subfunction, T *userdata)
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{
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return newmenu_dotiny(title, subtitle, nitems, item, TabsFlag, reinterpret_cast<newmenu_subfunction_t<void>::type>(subfunction), static_cast<void *>(userdata));
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}
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// Basically the same as do2 but sets reorderitems flag for weapon priority menu a bit redundant to get lose of a global variable but oh well...
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void newmenu_doreorder(const char * title, const char * subtitle, uint_fast32_t nitems, newmenu_item *item);
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// Sample Code:
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/*
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{
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int mmn;
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newmenu_item mm[8];
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char xtext[21];
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strcpy( xtext, "John" );
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mm[0].type=NM_TYPE_MENU; mm[0].text="Play game";
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mm[1].type=NM_TYPE_INPUT; mm[1].text=xtext; mm[1].text_len=20;
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mm[2].type=NM_TYPE_CHECK; mm[2].value=0; mm[2].text="check box";
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mm[3].type=NM_TYPE_TEXT; mm[3].text="-pickone-";
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mm[4].type=NM_TYPE_RADIO; mm[4].value=1; mm[4].group=0; mm[4].text="Radio #1";
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mm[5].type=NM_TYPE_RADIO; mm[5].value=1; mm[5].group=0; mm[5].text="Radio #2";
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mm[6].type=NM_TYPE_RADIO; mm[6].value=1; mm[6].group=0; mm[6].text="Radio #3";
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mm[7].type=NM_TYPE_PERCENT; mm[7].value=50; mm[7].text="Volume";
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mmn = newmenu_do("Descent", "Sample Menu", 8, mm, NULL );
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}
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*/
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// This function pops up a messagebox and returns which choice was selected...
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// Example:
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// nm_messagebox( "Title", "Subtitle", 2, "Ok", "Cancel", "There are %d objects", nobjects );
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// Returns 0 through nchoices-1.
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//int nm_messagebox(const char *title, int nchoices, ...);
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#define nm_messagebox(T,N,...) nm_messagebox_a##N((T), ##__VA_ARGS__)
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#define nm_messagebox_a1(T,A1 ,F,...) vnm_messagebox_aN(T,nm_messagebox_tie(A1 ),F,##__VA_ARGS__)
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#define nm_messagebox_a2(T,A1,A2 ,F,...) vnm_messagebox_aN(T,nm_messagebox_tie(A1,A2 ),F,##__VA_ARGS__)
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#define nm_messagebox_a3(T,A1,A2,A3 ,F,...) vnm_messagebox_aN(T,nm_messagebox_tie(A1,A2,A3 ),F,##__VA_ARGS__)
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#define nm_messagebox_a4(T,A1,A2,A3,A4 ,F,...) vnm_messagebox_aN(T,nm_messagebox_tie(A1,A2,A3,A4 ),F,##__VA_ARGS__)
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#define nm_messagebox_a5(T,A1,A2,A3,A4,A5 ,F,...) vnm_messagebox_aN(T,nm_messagebox_tie(A1,A2,A3,A4,A5),F,##__VA_ARGS__)
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typedef cstring_tie<5> nm_messagebox_tie;
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int nm_messagebox_str(const char *title, const nm_messagebox_tie &tie, const char *str) __attribute_nonnull((3));
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int vnm_messagebox_aN(const char *title, const nm_messagebox_tie &tie, const char *format, ...) __attribute_format_printf(3, 4);
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#define vnm_messagebox_aN(A1,A2,F,...) dxx_call_printf_checked(vnm_messagebox_aN,nm_messagebox_str,(A1,A2),(F),##__VA_ARGS__)
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newmenu_item *newmenu_get_items(newmenu *menu);
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int newmenu_get_nitems(newmenu *menu);
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int newmenu_get_citem(newmenu *menu);
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struct window *newmenu_get_window(newmenu *menu);
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void nm_draw_background(int x1, int y1, int x2, int y2);
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void nm_restore_background(int x, int y, int w, int h);
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extern const char *Newmenu_allowed_chars;
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// Example listbox callback function...
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// int lb_callback( int * citem, int *nitems, char * items[], int *keypress )
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// {
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// int i;
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//
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// if ( *keypress = KEY_CTRLED+KEY_D ) {
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// if ( *nitems > 1 ) {
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// unlink( items[*citem] ); // Delete the file
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// for (i=*citem; i<*nitems-1; i++ ) {
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// items[i] = items[i+1];
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// }
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// *nitems = *nitems - 1;
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// free( items[*nitems] );
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// items[*nitems] = NULL;
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// return 1; // redraw;
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// }
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// *keypress = 0;
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// }
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// return 0;
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// }
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extern const char **listbox_get_items(listbox *lb);
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extern int listbox_get_nitems(listbox *lb);
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extern int listbox_get_citem(listbox *lb);
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struct window *listbox_get_window(listbox *lb);
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extern void listbox_delete_item(listbox *lb, int item);
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template <typename T>
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class listbox_subfunction_t
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{
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public:
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typedef int (*type)(listbox *menu,const d_event &event, T *userdata);
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};
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class unused_listbox_userdata_t;
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static listbox_subfunction_t<unused_listbox_userdata_t>::type *const unused_listbox_subfunction = NULL;
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static unused_listbox_userdata_t *const unused_listbox_userdata = NULL;
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listbox *newmenu_listbox1( const char * title, uint_fast32_t nitems, const char *items[], int allow_abort_flag, int default_item, listbox_subfunction_t<void>::type listbox_callback, void *userdata );
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template <typename T>
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listbox *newmenu_listbox1(const char *title, uint_fast32_t nitems, const char *items[], int allow_abort_flag, int default_item, typename listbox_subfunction_t<T>::type listbox_callback, T *userdata)
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{
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return newmenu_listbox1(title, nitems, items, allow_abort_flag, default_item, reinterpret_cast<listbox_subfunction_t<void>::type>(listbox_callback), static_cast<void *>(userdata));
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}
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template <typename T>
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listbox *newmenu_listbox1(const char *title, uint_fast32_t nitems, const char *items[], int allow_abort_flag, int default_item, typename listbox_subfunction_t<T>::type listbox_callback, std::unique_ptr<T> userdata)
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{
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auto r = newmenu_listbox1(title, nitems, items, allow_abort_flag, default_item, reinterpret_cast<listbox_subfunction_t<void>::type>(listbox_callback), static_cast<void *>(userdata.get()));
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userdata.release();
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return r;
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}
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template <typename T>
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listbox *newmenu_listbox(const char *title, uint_fast32_t nitems, const char *items[], int allow_abort_flag, typename listbox_subfunction_t<T>::type listbox_callback, T *userdata)
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{
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return newmenu_listbox1(title, nitems, items, allow_abort_flag, 0, reinterpret_cast<listbox_subfunction_t<void>::type>(listbox_callback), static_cast<void *>(userdata));
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}
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//should be called whenever the palette changes
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extern void newmenu_free_background();
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static inline void nm_set_item_menu(newmenu_item &ni, const char *text)
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{
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ni.type = NM_TYPE_MENU;
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ni.text = const_cast<char *>(text);
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}
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__attribute_nonnull()
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__attribute_warn_unused_result
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static inline newmenu_item nm_item_menu(const char *text)
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{
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newmenu_item i;
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return nm_set_item_menu(i, text), i;
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}
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__attribute_nonnull()
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static inline void nm_set_item_input(newmenu_item &ni, unsigned len, char *text)
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{
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ni.type = NM_TYPE_INPUT;
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ni.text = text;
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ni.text_len = len;
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}
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template <std::size_t len>
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static inline void nm_set_item_input(newmenu_item &ni, char (&text)[len])
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{
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nm_set_item_input(ni, len, text);
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}
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template <std::size_t len>
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static inline void nm_set_item_input(newmenu_item &ni, array<char, len> &text)
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{
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nm_set_item_input(ni, len, text.data());
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}
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template <typename... T>
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__attribute_warn_unused_result
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static inline newmenu_item nm_item_input(T &&... t)
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{
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newmenu_item i;
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return nm_set_item_input(i, std::forward<T>(t)...), i;
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}
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__attribute_nonnull()
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static inline void nm_set_item_checkbox(newmenu_item &ni, const char *text, unsigned checked)
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{
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ni.type = NM_TYPE_CHECK;
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ni.text = const_cast<char *>(text);
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ni.value = checked;
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}
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__attribute_nonnull()
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static inline void nm_set_item_text(newmenu_item &ni, const char *text)
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{
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ni.type = NM_TYPE_TEXT;
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ni.text = const_cast<char *>(text);
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}
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__attribute_nonnull()
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__attribute_warn_unused_result
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static inline newmenu_item nm_item_text(const char *text)
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{
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newmenu_item i;
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return nm_set_item_text(i, text), i;
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}
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__attribute_nonnull()
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static inline void nm_set_item_radio(newmenu_item &ni, const char *text, unsigned checked, unsigned grp)
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{
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ni.type = NM_TYPE_RADIO;
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ni.text = const_cast<char *>(text);
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ni.value = checked;
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ni.group = grp;
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}
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__attribute_nonnull()
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static inline void nm_set_item_number(newmenu_item &ni, const char *text, unsigned now, unsigned low, unsigned high)
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{
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ni.type = NM_TYPE_NUMBER;
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ni.text = const_cast<char *>(text);
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ni.value = now;
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ni.min_value = low;
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ni.max_value = high;
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}
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__attribute_nonnull()
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static inline void nm_set_item_slider(newmenu_item &ni, const char *text, unsigned now, unsigned low, unsigned high)
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{
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ni.type = NM_TYPE_SLIDER;
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ni.text = const_cast<char *>(text);
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ni.value = now;
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ni.min_value = low;
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ni.max_value = high;
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}
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#define NEWMENU_MOUSE
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// #define NORMAL_CHECK_BOX "<22>"
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// #define CHECKED_CHECK_BOX "<22>"
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//
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// #define NORMAL_RADIO_BOX ""
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// #define CHECKED_RADIO_BOX "<22>"
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// #define CURSOR_STRING "_"
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// #define SLIDER_LEFT "<22>" // 131
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// #define SLIDER_RIGHT "<22>" // 132
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// #define SLIDER_MIDDLE "<22>" // 133
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// #define SLIDER_MARKER "<22>" // 134
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// #define UP_ARROW_MARKER "<22>" // 135
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// #define DOWN_ARROW_MARKER "<22>" // 136
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#define NORMAL_CHECK_BOX "\201"
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#define CHECKED_CHECK_BOX "\202"
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#define NORMAL_RADIO_BOX "\177"
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#define CHECKED_RADIO_BOX "\200"
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#define CURSOR_STRING "_"
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#define SLIDER_LEFT "\203" // 131
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#define SLIDER_RIGHT "\204" // 132
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#define SLIDER_MIDDLE "\205" // 133
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#define SLIDER_MARKER "\206" // 134
|
||
#if defined(DXX_BUILD_DESCENT_I)
|
||
#define UP_ARROW_MARKER "+" // 135
|
||
#define DOWN_ARROW_MARKER "+" // 136
|
||
#elif defined(DXX_BUILD_DESCENT_II)
|
||
#define UP_ARROW_MARKER ((grd_curcanv->cv_font==GAME_FONT.get())?"\202":"\207") // 135
|
||
#define DOWN_ARROW_MARKER ((grd_curcanv->cv_font==GAME_FONT.get())?"\200":"\210") // 136
|
||
#endif
|
||
|
||
#define BORDERX (15*(SWIDTH/320))
|
||
#define BORDERY (15*(SHEIGHT/200))
|
||
|
||
#define DXX_NEWMENU_VARIABLE m
|
||
#define DXX_ENUM_CHECK(S,OPT,V) OPT,
|
||
#define DXX_ENUM_RADIO(S,OPT,C,G) OPT,
|
||
#define DXX_ENUM_NUMBER DXX_ENUM_SLIDER
|
||
#define DXX_ENUM_SLIDER(S,OPT,V,MIN,MAX) OPT,
|
||
#define DXX_ENUM_SCALE_SLIDER(S,OPT,V,MIN,MAX,SCALE) OPT,
|
||
#define DXX_ENUM_MENU(S,OPT) OPT,
|
||
#define DXX_ENUM_TEXT(S,OPT) OPT,
|
||
#define DXX_ENUM_INPUT(S,OPT) OPT,
|
||
#define DXX_COUNT_CHECK(S,OPT,V) +1
|
||
#define DXX_COUNT_RADIO(S,OPT,C,G) +1
|
||
#define DXX_COUNT_NUMBER DXX_COUNT_SLIDER
|
||
#define DXX_COUNT_SLIDER(S,OPT,V,MIN,MAX) +1
|
||
#define DXX_COUNT_SCALE_SLIDER(S,OPT,V,MIN,MAX,SCALE) +1
|
||
#define DXX_COUNT_MENU(S,OPT) +1
|
||
#define DXX_COUNT_TEXT(S,OPT) +1
|
||
#define DXX_COUNT_INPUT(S,OPT) +1
|
||
#define DXX_ADD_CHECK(S,OPT,V) \
|
||
nm_set_item_checkbox(((DXX_NEWMENU_VARIABLE)[(OPT)]), (S), (V));
|
||
#define DXX_ADD_RADIO(S,OPT,C,G) \
|
||
nm_set_item_radio(((DXX_NEWMENU_VARIABLE)[(OPT)]), (S), (C), (G));
|
||
#define DXX_ADD_NUMBER(S,OPT,V,MIN,MAX) \
|
||
nm_set_item_number(((DXX_NEWMENU_VARIABLE)[(OPT)]), (S), (V), (MIN), (MAX));
|
||
#define DXX_ADD_SLIDER(S,OPT,V,MIN,MAX) \
|
||
nm_set_item_slider(((DXX_NEWMENU_VARIABLE)[(OPT)]), (S), (V), (MIN), (MAX));
|
||
#define DXX_ADD_SCALE_SLIDER(S,OPT,V,MIN,MAX,SCALE) \
|
||
DXX_ADD_SLIDER((S),(OPT),(V) / (SCALE),(MIN),(MAX))
|
||
#define DXX_ADD_MENU(S,OPT) \
|
||
nm_set_item_menu(((DXX_NEWMENU_VARIABLE)[(OPT)]), (S));
|
||
#define DXX_ADD_TEXT(S,OPT) \
|
||
nm_set_item_text(((DXX_NEWMENU_VARIABLE)[(OPT)]), (S));
|
||
#define DXX_ADD_INPUT(S,OPT) \
|
||
nm_set_item_input(((DXX_NEWMENU_VARIABLE)[(OPT)]),(S));
|
||
#define DXX_READ_CHECK(S,OPT,V) \
|
||
(V) = (DXX_NEWMENU_VARIABLE)[(OPT)].value;
|
||
#define DXX_READ_RADIO(S,OPT,C,G) /* handled specially */
|
||
#define DXX_READ_NUMBER(S,OPT,V,MIN,MAX) \
|
||
(V) = (DXX_NEWMENU_VARIABLE)[(OPT)].value;
|
||
#define DXX_READ_SLIDER(S,OPT,V,MIN,MAX) \
|
||
(V) = (DXX_NEWMENU_VARIABLE)[(OPT)].value;
|
||
#define DXX_READ_SCALE_SLIDER(S,OPT,V,MIN,MAX,SCALE) \
|
||
(V) = (DXX_NEWMENU_VARIABLE)[(OPT)].value * (SCALE);
|
||
#define DXX_READ_MENU(S,OPT) /* handled specially */
|
||
#define DXX_READ_TEXT(S,OPT) /* handled specially */
|
||
#define DXX_READ_INPUT(S,OPT) /* handled specially */
|
||
|
||
template <typename T, typename B>
|
||
class menu_bit_wrapper_t
|
||
{
|
||
using M = decltype(std::declval<const T &>() & std::declval<B>());
|
||
std::tuple<T &, B> m_data;
|
||
enum
|
||
{
|
||
m_mask = 0,
|
||
m_bit = 1,
|
||
};
|
||
T &get_mask()
|
||
{
|
||
return std::get<m_mask>(m_data);
|
||
}
|
||
const T &get_mask() const
|
||
{
|
||
return std::get<m_mask>(m_data);
|
||
}
|
||
B get_bit() const
|
||
{
|
||
return std::get<m_bit>(m_data);
|
||
}
|
||
public:
|
||
constexpr menu_bit_wrapper_t(T &t, B bit) :
|
||
m_data(t, bit)
|
||
{
|
||
}
|
||
constexpr operator M() const
|
||
{
|
||
return get_mask() & get_bit();
|
||
}
|
||
menu_bit_wrapper_t &operator=(bool n)
|
||
{
|
||
if (n)
|
||
get_mask() |= get_bit();
|
||
else
|
||
get_mask() &= ~get_bit();
|
||
return *this;
|
||
}
|
||
};
|
||
|
||
template <typename T, typename B>
|
||
static constexpr menu_bit_wrapper_t<T, B> menu_bit_wrapper(T &t, B b)
|
||
{
|
||
return {t, b};
|
||
}
|
||
|
||
template <typename T, typename B>
|
||
class menu_number_bias_wrapper_t
|
||
{
|
||
T &m_value;
|
||
B m_bias;
|
||
public:
|
||
constexpr menu_number_bias_wrapper_t(T &t, B bias) :
|
||
m_value(t), m_bias(bias)
|
||
{
|
||
}
|
||
constexpr operator T() const
|
||
{
|
||
return m_value + m_bias;
|
||
}
|
||
menu_number_bias_wrapper_t &operator=(T n)
|
||
{
|
||
m_value = n - m_bias;
|
||
return *this;
|
||
}
|
||
};
|
||
|
||
template <typename T, typename B>
|
||
static constexpr menu_number_bias_wrapper_t<T, B> menu_number_bias_wrapper(T &t, B b)
|
||
{
|
||
return {t, b};
|
||
}
|
||
|
||
#endif
|