apps/gui/splash.c

   1 /***************************************************************************
   2  *             __________               __   ___.
   3  *   Open      \______   \ ____   ____ |  | _\_ |__   _______  ___
   4  *   Source     |       _//  _ \_/ ___\|  |/ /| __ \ /  _ \  \/  /
   5  *   Jukebox    |    |   (  <_> )  \___|    < | \_\ (  <_> > <  <
   6  *   Firmware   |____|_  /\____/ \___  >__|_ \|___  /\____/__/\_ \
   7  *                     \/            \/     \/    \/            \/
   8  * $Id$
   9  *
  10  * Copyright (C) Daniel Stenberg (2002)
  11  *
  12  * This program is free software; you can redistribute it and/or
  13  * modify it under the terms of the GNU General Public License
  14  * as published by the Free Software Foundation; either version 2
  15  * of the License, or (at your option) any later version.
  16  *
  17  * This software is distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY
  18  * KIND, either express or implied.
  19  *
  20  ****************************************************************************/
  21 #include "stdarg.h"
  22 #include "string.h"
  23 #include "rbunicode.h"
  24 #include "stdio.h"
  25 #include "kernel.h"
  26 #include "screen_access.h"
  27 #include "lang.h"
  28 #include "settings.h"
  29 #include "talk.h"
  30 #include "splash.h"
  31 #include "viewport.h"
  32
  33 #ifdef HAVE_LCD_BITMAP
  34
  35 #define MAXLINES  (LCD_HEIGHT/6)
  36 #define MAXBUFFER 512
  37
  38 #else /* HAVE_LCD_CHARCELLS */
  39
  40 #define MAXLINES  2
  41 #define MAXBUFFER 64
  42
  43 #endif
  44
  45 #define RECT_SPACING 2
  46
  47 static void splash_internal(struct screen * screen, const char *fmt, va_list ap)
  48 {
  49     char splash_buf[MAXBUFFER];
  50     short widths[MAXLINES];
  51     char *lines[MAXLINES];
  52
  53     char *next;
  54     char *lastbreak = NULL;
  55     char *store = NULL;
  56     int line = 0;
  57     int x = 0;
  58     int y, i;
  59     int space_w, w, h;
  60 #ifdef HAVE_LCD_BITMAP
  61     struct viewport vp;
  62     int maxw = 0;
  63
  64     screen->getstringsize(" ", &space_w, &h);
  65 #else /* HAVE_LCD_CHARCELLS */
  66
  67     space_w = h = 1;
  68     screen->double_height (false);
  69 #endif
  70     y = h;
  71
  72     vsnprintf(splash_buf, sizeof(splash_buf), fmt, ap);
  73     va_end(ap);
  74
  75     /* break splash string into display lines, doing proper word wrap */
  76
  77     next = strtok_r(splash_buf, " ", &store);
  78     if (!next)
  79         return;  /* nothing to display */
  80
  81     lines[0] = next;
  82     while (true)
  83     {
  84 #ifdef HAVE_LCD_BITMAP
  85         screen->getstringsize(next, &w, NULL);
  86 #else
  87         w = utf8length(next);
  88 #endif
  89         if (lastbreak)
  90         {
  91             if (x + (next - lastbreak) * space_w + w
  92                     > screen->lcdwidth - RECT_SPACING*2)
  93             {   /* too wide, wrap */
  94                 widths[line] = x;
  95 #ifdef HAVE_LCD_BITMAP
  96                 if (x > maxw)
  97                     maxw = x;
  98 #endif
  99                 if ((y + h > screen->lcdheight) || (line >= (MAXLINES-1)))
 100                     break;  /* screen full or out of lines */
 101                 x = 0;
 102                 y += h;
 103                 lines[++line] = next;
 104             }
 105             else
 106             {
 107                 /*  restore & calculate spacing */
 108                 *lastbreak = ' ';
 109                 x += (next - lastbreak) * space_w;
 110             }
 111         }
 112         x += w;
 113         lastbreak = next + strlen(next);
 114         next = strtok_r(NULL, " ", &store);
 115         if (!next)
 116         {   /* no more words */
 117             widths[line] = x;
 118 #ifdef HAVE_LCD_BITMAP
 119             if (x > maxw)
 120                 maxw = x;
 121 #endif
 122             break;
 123         }
 124     }
 125
 126     /* prepare viewport
 127      * First boundaries, then the grey filling, then the black border and finally
 128      * the text*/
 129
 130     screen->stop_scroll();
 131
 132 #ifdef HAVE_LCD_BITMAP
 133     viewport_set_defaults(&vp, screen->screen_type);
 134     /* If we center the display, then just clear the box we need and put
 135        a nice little frame and put the text in there! */
 136     vp.y = (screen->lcdheight - y) / 2 - RECT_SPACING;  /* height => y start position */
 137     vp.x = (screen->lcdwidth - maxw) / 2 - RECT_SPACING;
 138     vp.width = maxw + 2*RECT_SPACING;
 139     vp.height = screen->lcdheight - (vp.y*2) + RECT_SPACING;
 140
 141     if (vp.y < 0)
 142         vp.y = 0;
 143     if (vp.x < 0)
 144         vp.x = 0;
 145     if (vp.width > screen->lcdwidth)
 146         vp.width = screen->lcdwidth;
 147     if (vp.height > screen->lcdheight)
 148         vp.height = screen->lcdheight;
 149
 150 #if LCD_DEPTH > 1
 151     if (screen->depth > 1)
 152     {
 153         vp.drawmode = DRMODE_FG;
 154         vp.fg_pattern = SCREEN_COLOR_TO_NATIVE(screen, LCD_LIGHTGRAY);
 155     }
 156     else
 157 #endif
 158         vp.drawmode = (DRMODE_SOLID|DRMODE_INVERSEVID);
 159
 160     screen->set_viewport(&vp);
 161     screen->fillrect(0, 0, vp.width, vp.height);
 162
 163 #if LCD_DEPTH > 1
 164     if (screen->depth > 1)
 165         vp.fg_pattern = SCREEN_COLOR_TO_NATIVE(screen, LCD_BLACK);
 166     else
 167 #endif
 168         vp.drawmode = DRMODE_SOLID;
 169
 170     screen->drawrect(0, 0, vp.width, vp.height);
 171
 172     /* prepare putting the text */
 173     y = RECT_SPACING;
 174 #else /* HAVE_LCD_CHARCELLS */
 175     y = 0;    /* vertical centering on 2 lines would be silly */
 176     x = 0;
 177     screen->clear_display();
 178 #endif
 179
 180     /* print the message to screen */
 181     for (i = 0; i <= line; i++, y+=h)
 182     {
 183 #ifdef HAVE_LCD_BITMAP
 184 #define W (vp.width - RECT_SPACING*2)
 185 #else
 186 #define W (screens->lcdwidth)
 187 #endif
 188         x = (W - widths[i])/2;
 189         if (x < 0)
 190             x = 0;
 191 #ifdef HAVE_LCD_BITMAP
 192         screen->putsxy(x+RECT_SPACING, y, lines[i]);
 193 #else
 194         screen->puts(x, y, lines[i]);
 195 #endif
 196 #undef W
 197     }
 198     screen->update_viewport();
 199     screen->set_viewport(NULL);
 200 }
 201
 202 void splashf(int ticks, const char *fmt, ...)
 203 {
 204     va_list ap;
 205     int i;
 206
 207     /* If fmt is a lang ID then get the corresponding string (which
 208        still might contain % place holders). */
 209     fmt = P2STR((unsigned char *)fmt);
 210     FOR_NB_SCREENS(i)
 211     {
 212         va_start(ap, fmt);
 213         splash_internal(&(screens[i]), fmt, ap);
 214         va_end(ap);
 215     }
 216     if (ticks)
 217         sleep(ticks);
 218 }
 219
 220 void splash(int ticks, const char *str)
 221 {
 222 #if !defined(SIMULATOR) || CONFIG_CODEC == SWCODEC
 223     long id;
 224     /* fmt may be a so called virtual pointer. See settings.h. */
 225     if((id = P2ID((const unsigned char*)str)) >= 0)
 226         /* If fmt specifies a voicefont ID, and voice menus are
 227            enabled, then speak it. */
 228         cond_talk_ids_fq(id);
 229 #endif
 230     splashf(ticks, "%s", P2STR((const unsigned char*)str));
 231 }