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Annotation of hatari/src/gui-sdl/dlgAlert.c, revision 1.1

1.1     ! root        1: /*
        !             2:  * Hatari - dlgAlert.c - AES-like AlertBox 
        !             3:  *
        !             4:  * Based on dlgAlert.cpp from the emulator ARAnyM,
        !             5:  * Copyright (c) 2004 Petr Stehlik of ARAnyM dev team
        !             6:  *
        !             7:  * Adaptation to Hatari by Thomas Huth.
        !             8:  *
        !             9:  * This file is free software; you can redistribute it and/or modify
        !            10:  * it under the terms of the GNU General Public License as published by
        !            11:  * the Free Software Foundation; either version 2 of the License, or
        !            12:  * (at your option) any later version.
        !            13:  *
        !            14:  * This file is distributed in the hope that it will be useful,
        !            15:  * but WITHOUT ANY WARRANTY; without even the implied warranty of
        !            16:  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
        !            17:  * GNU General Public License for more details.
        !            18:  *
        !            19:  * You should have received a copy of the GNU General Public License
        !            20:  * along with ARAnyM; if not, write to the Free Software
        !            21:  * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
        !            22:  */
        !            23: char DlgAlert_rcsid[] = "Hatari $Id: dlgAlert.c,v 1.1 2004/10/31 17:32:50 thothy Exp $";
        !            24: 
        !            25: #include <string.h>
        !            26: 
        !            27: #include "main.h"
        !            28: #include "dialog.h"
        !            29: #include "sdlgui.h"
        !            30: 
        !            31: 
        !            32: #define MAX_LINES 4
        !            33: 
        !            34: static char dlglines[MAX_LINES][50+1];
        !            35: 
        !            36: 
        !            37: #define DLGALERT_OK       5
        !            38: #define DLGALERT_CANCEL   6
        !            39: 
        !            40: /* The "Alert"-dialog: */
        !            41: static SGOBJ alertdlg[] =
        !            42: {
        !            43:        { SGBOX, 0, 0, 0,0, 52,7, NULL },
        !            44:        { SGTEXT, 0, 0, 1,1, 50,1, dlglines[0] },
        !            45:        { SGTEXT, 0, 0, 1,2, 50,1, dlglines[1] },
        !            46:        { SGTEXT, 0, 0, 1,3, 50,1, dlglines[2] },
        !            47:        { SGTEXT, 0, 0, 1,4, 50,1, dlglines[3] },
        !            48:        { SGBUTTON, 0, 0, 5,5, 8,1, "OK" },
        !            49:        { SGBUTTON, 0, 0, 24,5, 8,1, "Cancel" },
        !            50:        { -1, 0, 0, 0,0, 0,0, NULL }
        !            51: };
        !            52: 
        !            53: 
        !            54: /*-----------------------------------------------------------------------*/
        !            55: /*
        !            56:    Breaks long string to several strings of max_width, divided by '\0'
        !            57:    and returns the number of lines you need to display the strings.
        !            58: */
        !            59: static int DlgAlert_FormatTextToBox(char *text, int max_width)
        !            60: {
        !            61:        int lines = 1;
        !            62:        int txtlen;
        !            63:        char *p;                /* pointer to begin of actual line */
        !            64:        char *q;                /* pointer to start of next search */
        !            65:        char *llb;              /* pointer to last place suitable for breaking the line */
        !            66:        char *txtend;   /* pointer to end of the text */
        !            67: 
        !            68:        txtlen = strlen(text);
        !            69: 
        !            70:        q = p = text;
        !            71:        llb = text-1;   /* pointer to last line break */
        !            72:        txtend = text + txtlen;
        !            73: 
        !            74:        if (txtlen > max_width)
        !            75:        {
        !            76:                while(q < txtend)                                               /* q was last place suitable for breaking */
        !            77:                {
        !            78:                        char *r = strpbrk(q, " \t/\\\n");       /* find next suitable place for the break */
        !            79:                        if (r == NULL)
        !            80:                                r = txtend;                                             /* if there's no place then point to the end */
        !            81: 
        !            82:                        if ((r-p) < max_width && *r != '\n')    /* '\n' is always used for breaking */
        !            83:                        {
        !            84:                                llb = r;                                                /* remember new place suitable for breaking */
        !            85:                                q++;
        !            86:                                continue;                                               /* search again */
        !            87:                        }
        !            88: 
        !            89:                        if ((r-p) > max_width)                          /* too long line already? */
        !            90:                        {
        !            91:                                if (p > llb)                                    /* bad luck - no place for the delimiter. Let's do it the strong way */
        !            92:                                        llb = p + max_width;            /* we loose one character */
        !            93:                        }
        !            94:                        else
        !            95:                                llb = r;                        /* break in this place */
        !            96: 
        !            97:                        *llb = '\0';                    /* BREAK */
        !            98:                        p = q = llb + 1;                /* next line begins here */
        !            99:                        lines++;                                /* increment line counter */
        !           100:                }
        !           101:        }
        !           102: 
        !           103:        return lines;                                   /* return line counter */
        !           104: }
        !           105: 
        !           106: 
        !           107: 
        !           108: /*-----------------------------------------------------------------------*/
        !           109: /*
        !           110:   Show the "alert" dialog. Return TRUE if user pressed "OK".
        !           111: */
        !           112: static int DlgAlert_ShowDlg(const char *text)
        !           113: {
        !           114:        char *t = (char *)malloc(strlen(text)+1);
        !           115:        char *orig_t = t;
        !           116:        static int maxlen = sizeof(dlglines[0])-1;
        !           117:        int lines;
        !           118:        int i;
        !           119:        BOOL bOldMouseVisibility;
        !           120: 
        !           121:        strcpy(t, text);
        !           122:        lines = DlgAlert_FormatTextToBox(t, maxlen);
        !           123: 
        !           124:        for(i=0; i<MAX_LINES; i++)
        !           125:        {
        !           126:                if (i < lines)
        !           127:                {
        !           128:                        strcpy(dlglines[i], t);
        !           129:                        t += strlen(t)+1;
        !           130:                }
        !           131:                else
        !           132:                {
        !           133:                        dlglines[i][0] = '\0';
        !           134:                }
        !           135:        }
        !           136: 
        !           137:        free(orig_t);
        !           138: 
        !           139:        SDLGui_PrepareFont();
        !           140:        SDLGui_CenterDlg(alertdlg);
        !           141: 
        !           142:        bOldMouseVisibility = SDL_ShowCursor(SDL_QUERY);
        !           143:        SDL_ShowCursor(SDL_ENABLE);
        !           144: 
        !           145:        i = SDLGui_DoDialog(alertdlg);
        !           146: 
        !           147:        SDL_ShowCursor(bOldMouseVisibility);
        !           148: 
        !           149:        return (i == DLGALERT_OK);
        !           150: }
        !           151: 
        !           152: 
        !           153: /*-----------------------------------------------------------------------*/
        !           154: /*
        !           155:   Show a "notice" dialog: (only one button)
        !           156: */
        !           157: int DlgAlert_Notice(const char *text)
        !           158: {
        !           159:        /* Hide "cancel" button: */
        !           160:        alertdlg[DLGALERT_CANCEL].type = SGTEXT;
        !           161:        alertdlg[DLGALERT_CANCEL].txt = "";
        !           162:        alertdlg[DLGALERT_CANCEL].w = alertdlg[DLGALERT_CANCEL].w = 0;
        !           163: 
        !           164:        /* Adjust button position: */
        !           165:        alertdlg[DLGALERT_OK].x = (alertdlg[0].w - alertdlg[DLGALERT_OK].w) / 2;
        !           166: 
        !           167:        return DlgAlert_ShowDlg(text);
        !           168: }
        !           169: 
        !           170: 
        !           171: /*-----------------------------------------------------------------------*/
        !           172: /*
        !           173:   Show a "query" dialog: (two buttons)
        !           174: */
        !           175: int DlgAlert_Query(const char *text)
        !           176: {
        !           177:        /* Show "cancel" button: */
        !           178:        alertdlg[DLGALERT_CANCEL].type = SGBUTTON;
        !           179:        alertdlg[DLGALERT_CANCEL].txt = "Cancel";
        !           180:        alertdlg[DLGALERT_CANCEL].w = 8;
        !           181:        alertdlg[DLGALERT_CANCEL].h = 1;
        !           182: 
        !           183:        /* Adjust buttons positions: */
        !           184:        alertdlg[DLGALERT_OK].x = (alertdlg[0].w - alertdlg[DLGALERT_OK].w - alertdlg[DLGALERT_CANCEL].w) / 3;
        !           185:        alertdlg[DLGALERT_CANCEL].x = alertdlg[DLGALERT_OK].x * 2 + alertdlg[DLGALERT_OK].w;
        !           186: 
        !           187:        return DlgAlert_ShowDlg(text);
        !           188: }

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