21241471c6
Use structured bindings to capture the values on return, so that they can be declared as `const` if they are immutable after initial computation.
149 lines
3.5 KiB
C++
149 lines
3.5 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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#include <stdlib.h>
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#include "u_mem.h"
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#include "maths.h"
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#include "pstypes.h"
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#include "gr.h"
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#include "event.h"
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#include "mouse.h"
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#include "ui.h"
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#include "dxxsconf.h"
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#include "dsx-ns.h"
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#include <memory>
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namespace dcx {
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#define MENU_BORDER 2
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#define MENU_VERT_SPACING 2
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namespace {
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struct menu : UI_DIALOG
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{
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explicit menu(short x, short y, short w, short h, enum dialog_flags flags, int &choice, int NumButtons) :
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UI_DIALOG(x, y, w, h, flags),
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button_g(std::make_unique<std::unique_ptr<UI_GADGET_BUTTON>[]>(NumButtons)),
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choice(&choice),
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num_buttons(NumButtons)
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{
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}
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const std::unique_ptr<std::unique_ptr<UI_GADGET_BUTTON>[]> button_g;
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int *const choice;
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const int num_buttons;
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virtual window_event_result callback_handler(const d_event &) override;
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};
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window_event_result menu::callback_handler(const d_event &event)
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{
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for (int i=0; i < num_buttons; i++ )
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{
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if (GADGET_PRESSED(button_g[i].get()))
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{
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*(choice) = i+1;
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return window_event_result::handled;
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}
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}
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if ((*(choice)==0) && B1_JUST_RELEASED)
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{
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*(choice) = -1;
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return window_event_result::handled;
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}
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return window_event_result::ignored;
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}
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}
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int MenuX( int x, int y, int NumButtons, const char *const text[] )
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{
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int button_width, button_height;
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int w, h;
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int choice;
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button_width = button_height = 0;
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for (int i=0; i<NumButtons; i++ )
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{
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const auto &&[width, height] = ui_get_button_size(*grd_curcanv->cv_font, text[i]);
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if ( width > button_width ) button_width = width;
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if ( height > button_height ) button_height = height;
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}
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unsigned width, height;
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width = button_width + 2*(MENU_BORDER+3);
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height = (button_height*NumButtons) + (MENU_VERT_SPACING*(NumButtons-1)) ;
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height += (MENU_BORDER+3) * 2;
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w = grd_curscreen->get_screen_width();
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h = grd_curscreen->get_screen_height();
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{
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int mx, my, mz;
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mouse_get_pos(&mx, &my, &mz);
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if ( x == -1 ) x = mx - width/2;
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if ( y == -1 ) y = my;
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}
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if (x < 0 ) {
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x = 0;
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}
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if ( (x+width-1) >= w ) {
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x = w - width;
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}
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if (y < 0 ) {
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y = 0;
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}
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if ( (y+height-1) >= h ) {
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y = h - height;
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}
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auto dlg = window_create<menu>(x, y, width, height, static_cast<dialog_flags>(DF_FILLED | DF_SAVE_BG | DF_MODAL), choice, NumButtons);
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x = MENU_BORDER+3;
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y = MENU_BORDER+3;
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for (int i=0; i<NumButtons; i++ )
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{
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dlg->button_g[i] = ui_add_gadget_button(*dlg, x, y, button_width, button_height, text[i], nullptr);
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y += button_height+MENU_VERT_SPACING;
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}
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choice = 0;
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while(choice==0)
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event_process();
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ui_close_dialog(*dlg);
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return choice;
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}
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}
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