Subversion Repositories Games.Descent

/*

 * Portions of this file are copyright Rebirth contributors and licensed as

 * described in COPYING.txt.

 * Portions of this file are copyright Parallax Software and licensed

 * according to the Parallax license below.

 * See COPYING.txt for license details.

THE COMPUTER CODE CONTAINED HEREIN IS THE SOLE PROPERTY OF PARALLAX

SOFTWARE CORPORATION ("PARALLAX").  PARALLAX, IN DISTRIBUTING THE CODE TO

END-USERS, AND SUBJECT TO ALL OF THE TERMS AND CONDITIONS HEREIN, GRANTS A

ROYALTY-FREE, PERPETUAL LICENSE TO SUCH END-USERS FOR USE BY SUCH END-USERS

IN USING, DISPLAYING,  AND CREATING DERIVATIVE WORKS THEREOF, SO LONG AS

SUCH USE, DISPLAY OR CREATION IS FOR NON-COMMERCIAL, ROYALTY OR REVENUE

FREE PURPOSES.  IN NO EVENT SHALL THE END-USER USE THE COMPUTER CODE

CONTAINED HEREIN FOR REVENUE-BEARING PURPOSES.  THE END-USER UNDERSTANDS

AND AGREES TO THE TERMS HEREIN AND ACCEPTS THE SAME BY USE OF THIS FILE.

COPYRIGHT 1993-1999 PARALLAX SOFTWARE CORPORATION.  ALL RIGHTS RESERVED.

*/

#include <stdio.h>

#include <stdarg.h>

#include "maths.h"

#include "pstypes.h"

#include "gr.h"

#include "event.h"

#include "ui.h"

#include "mouse.h"

#include "key.h"

#include "u_mem.h"

#include "dxxsconf.h"

#include "dsx-ns.h"

#include <array>

#include <memory>

namespace dcx {

// ts = total span

// w = width of each item

// n = number of items

// i = item number (0 based)

#define EVEN_DIVIDE(ts,w,n,i) ((((ts)-((w)*(n)))*((i)+1))/((n)+1))+((w)*(i))

#define BUTTON_HORZ_SPACING 20

#define TEXT_EXTRA_HEIGHT 5

namespace {

struct messagebox

{

        const ui_messagebox_tie *button;

        std::array<std::unique_ptr<UI_GADGET_BUTTON>, 10> button_g;

        const char                              *text;

        int                                     *choice;

        int                                     width;

        int                                     text_y;

        int                                     line_y;

};

}

static window_event_result messagebox_handler(UI_DIALOG *dlg,const d_event &event, messagebox *m)

{

        if (event.type == EVENT_UI_DIALOG_DRAW)

        {

                const grs_font * temp_font;

                gr_set_current_canvas(grd_curscreen->sc_canvas);

                auto &canvas = *grd_curcanv;

                temp_font = grd_curscreen->sc_canvas.cv_font;

                if (grd_curscreen->get_screen_width() < 640) {

                        grd_curscreen->sc_canvas.cv_font = ui_small_font.get();

                }

                ui_dialog_set_current_canvas(dlg);

                ui_string_centered(canvas, m->width / 2, m->text_y, m->text);

                Hline(canvas, 1, m->width - 2, m->line_y + 1, CGREY);

                Hline(canvas, 2, m->width - 2, m->line_y + 2, CBRIGHT);

                grd_curscreen->sc_canvas.cv_font = temp_font;

                return window_event_result::handled;

        }

        for (uint_fast32_t i=0; i < m->button->count(); i++ )

        {

                if (GADGET_PRESSED(m->button_g[i].get()))

                {

                        *(m->choice) = i+1;

                        return window_event_result::handled;

                }

        }

        return window_event_result::ignored;

}

int (ui_messagebox)( short xc, short yc, const char * text, const ui_messagebox_tie &Button )

{

        UI_DIALOG * dlg;

        int avg, x, y;

        int button_width, button_height, text_height, text_width;

        int w, h;

        int choice;

        auto m = std::make_unique<messagebox>();

        m->button = &Button;

        m->text = text;

        m->choice = &choice;

        button_width = button_height = 0;

        gr_set_current_canvas(grd_curscreen->sc_canvas);

        auto &canvas = *grd_curcanv;

        auto &cv_font = *canvas.cv_font;

        w = grd_curscreen->get_screen_width();

        h = grd_curscreen->get_screen_height();

        for (uint_fast32_t i=0; i < Button.count(); i++ )

        {

                int width, height;

                ui_get_button_size(cv_font, Button.string(i), width, height);

                if ( width > button_width ) button_width = width;

                if ( height > button_height ) button_height = height;

        }

        gr_get_string_size(cv_font, text, &text_width, &text_height, &avg);

        unsigned width, height;

        width = button_width*Button.count();

        width += BUTTON_HORZ_SPACING*(Button.count()+1);

        width ++;

        text_width += avg*6;

        text_width += 10;

        if (text_width > width )

                width = text_width;

        height = text_height;

        height += button_height;

        height += 4*TEXT_EXTRA_HEIGHT;

        height += 2;  // For line in middle

        {

                int mx, my, mz;

                mouse_get_pos(&mx, &my, &mz);

                if ( xc == -1 )

                        xc = mx;

                if ( yc == -1 )

                        yc = my - button_height/2;

        }

        if ( xc == -2 )

                xc = w/2;

        if ( yc == -2 )

                yc = h/2;

        x = xc - width/2;

        y = yc - height/2;

        if (x < 0 ) {

                x = 0;

        }

        if ( (x+width-1) >= w ) {

                x = w - width;

        }

        if (y < 0 ) {

                y = 0;

        }

        if ( (y+height-1) >= h ) {

                y = h - height;

        }

        dlg = ui_create_dialog(x, y, width, height, static_cast<dialog_flags>(DF_DIALOG | DF_MODAL), messagebox_handler, m.get());

        y = TEXT_EXTRA_HEIGHT + text_height/2 - 1;

        m->width = width;

        m->text_y = y;

        y = 2*TEXT_EXTRA_HEIGHT + text_height;

        m->line_y = y;

        y = height - TEXT_EXTRA_HEIGHT - button_height;

        for (uint_fast32_t i=0; i < Button.count(); i++ )

        {

                x = EVEN_DIVIDE(width,button_width,Button.count(),i);

                m->button_g[i] = ui_add_gadget_button( dlg, x, y, button_width, button_height, Button.string(i), NULL );

        }

        ui_gadget_calc_keys(dlg);

        //key_flush();

        dlg->keyboard_focus_gadget = m->button_g[0].get();

        choice = 0;

        while(choice==0)

                event_process();

        ui_close_dialog(dlg);

        return choice;

}

}