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 #define RECT_SPACING 2
  38
  39 #else /* HAVE_LCD_CHARCELLS */
  40
  41 #define MAXLINES  2
  42 #define MAXBUFFER 64
  43 #define RECT_SPACING 0
  44
  45 #endif
  46
  47
  48 static void splash_internal(struct screen * screen, const char *fmt, va_list ap)
  49 {
  50     char splash_buf[MAXBUFFER];
  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     viewport_set_defaults(&vp, screen->screen_type);
  65     screen->set_viewport(&vp);
  66
  67     screen->getstringsize(" ", &space_w, &h);
  68 #else /* HAVE_LCD_CHARCELLS */
  69
  70     space_w = h = 1;
  71     screen->double_height (false);
  72 #endif
  73     y = h;
  74
  75     vsnprintf(splash_buf, sizeof(splash_buf), fmt, ap);
  76     va_end(ap);
  77
  78     /* break splash string into display lines, doing proper word wrap */
  79
  80     next = strtok_r(splash_buf, " ", &store);
  81     if (!next)
  82         goto end; /* nothing to display */
  83
  84     lines[0] = next;
  85     while (true)
  86     {
  87 #ifdef HAVE_LCD_BITMAP
  88         screen->getstringsize(next, &w, NULL);
  89 #else
  90         w = utf8length(next);
  91 #endif
  92         if (lastbreak)
  93         {
  94             if (x + (next - lastbreak) * space_w + w
  95                     > screen->lcdwidth - RECT_SPACING*2)
  96             {   /* too wide, wrap */
  97 #ifdef HAVE_LCD_BITMAP
  98                 if (x > maxw)
  99                     maxw = x;
 100 #endif
 101                 if ((y + h > screen->lcdheight) || (line >= (MAXLINES-1)))
 102                     break;  /* screen full or out of lines */
 103                 x = 0;
 104                 y += h;
 105                 lines[++line] = next;
 106             }
 107             else
 108             {
 109                 /*  restore & calculate spacing */
 110                 *lastbreak = ' ';
 111                 x += (next - lastbreak) * space_w;
 112             }
 113         }
 114         x += w;
 115         lastbreak = next + strlen(next);
 116         next = strtok_r(NULL, " ", &store);
 117         if (!next)
 118         {   /* no more words */
 119 #ifdef HAVE_LCD_BITMAP
 120             if (x > maxw)
 121                 maxw = x;
 122 #endif
 123             break;
 124         }
 125     }
 126
 127     /* prepare viewport
 128      * First boundaries, then the grey filling, then the black border and finally
 129      * the text*/
 130
 131     screen->stop_scroll();
 132
 133 #ifdef HAVE_LCD_BITMAP
 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     vp.flags |=  VP_FLAG_ALIGN_CENTER;
 151 #if LCD_DEPTH > 1
 152     if (screen->depth > 1)
 153     {
 154         vp.drawmode = DRMODE_FG;
 155         /* can't do vp.fg_pattern here, since set_foreground does a bit more on
 156          * greyscale */
 157         screen->set_foreground(SCREEN_COLOR_TO_NATIVE(screen, LCD_LIGHTGRAY));
 158     }
 159     else
 160 #endif
 161         vp.drawmode = (DRMODE_SOLID|DRMODE_INVERSEVID);
 162
 163     screen->fillrect(0, 0, vp.width, vp.height);
 164
 165 #if LCD_DEPTH > 1
 166     if (screen->depth > 1)
 167         /* can't do vp.fg_pattern here, since set_foreground does a bit more on
 168          * greyscale */
 169         screen->set_foreground(SCREEN_COLOR_TO_NATIVE(screen, LCD_BLACK));
 170     else
 171 #endif
 172         vp.drawmode = DRMODE_SOLID;
 173
 174     screen->drawrect(0, 0, vp.width, vp.height);
 175
 176     /* prepare putting the text */
 177     y = RECT_SPACING;
 178 #else /* HAVE_LCD_CHARCELLS */
 179     y = 0;    /* vertical centering on 2 lines would be silly */
 180     screen->clear_display();
 181 #endif
 182
 183     /* print the message to screen */
 184     for (i = 0; i <= line; i++, y+=h)
 185     {
 186 #ifdef HAVE_LCD_BITMAP
 187         screen->putsxy(0, y, lines[i]);
 188 #else
 189         screen->puts(0, y, lines[i]);
 190 #endif
 191     }
 192     screen->update_viewport();
 193 end:
 194     screen->set_viewport(NULL);
 195 }
 196
 197 void splashf(int ticks, const char *fmt, ...)
 198 {
 199     va_list ap;
 200     int i;
 201
 202     /* If fmt is a lang ID then get the corresponding string (which
 203        still might contain % place holders). */
 204     fmt = P2STR((unsigned char *)fmt);
 205     FOR_NB_SCREENS(i)
 206     {
 207         va_start(ap, fmt);
 208         splash_internal(&(screens[i]), fmt, ap);
 209         va_end(ap);
 210     }
 211     if (ticks)
 212         sleep(ticks);
 213 }
 214
 215 void splash(int ticks, const char *str)
 216 {
 217 #if !defined(SIMULATOR) || CONFIG_CODEC == SWCODEC
 218     long id;
 219     /* fmt may be a so called virtual pointer. See settings.h. */
 220     if((id = P2ID((const unsigned char*)str)) >= 0)
 221         /* If fmt specifies a voicefont ID, and voice menus are
 222            enabled, then speak it. */
 223         cond_talk_ids_fq(id);
 224 #endif
 225     splashf(ticks, "%s", P2STR((const unsigned char*)str));
 226 }