apps/plugins/lib/display_text.c

   1 /***************************************************************************
   2  *             __________               __   ___.
   3  *   Open      \______   \ ____   ____ |  | _\_ |__   _______  ___
   4  *   Source     |       _//  _ \_/ ___\|  |/ /| __ \ /  _ \  \/  /
   5  *   Jukebox    |    |   (  <_> )  \___|    < | \_\ (  <_> > <  <
   6  *   Firmware   |____|_  /\____/ \___  >__|_ \|___  /\____/__/\_ \
   7  *                     \/            \/     \/    \/            \/
   8  * $Id$
   9  *
  10  * Copyright (C) 2009 Johannes Schwarz
  11  * based on Will Robertson code in superdom
  12  *
  13  * This program is free software; you can redistribute it and/or
  14  * modify it under the terms of the GNU General Public License
  15  * as published by the Free Software Foundation; either version 2
  16  * of the License, or (at your option) any later version.
  17  *
  18  * This software is distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY
  19  * KIND, either express or implied.
  20  *
  21  ****************************************************************************/
  22 #include "plugin.h"
  23 #include "display_text.h"
  24
  25 #ifdef HAVE_LCD_CHARCELLS
  26 #define MARGIN 0
  27 #else
  28 #define MARGIN 5
  29 #endif
  30
  31 static bool wait_key_press(void)
  32 {
  33     int button;
  34     do {
  35         button = rb->button_get(true);
  36         if ( rb->default_event_handler( button ) == SYS_USB_CONNECTED )
  37             return true;
  38     } while( ( button == BUTTON_NONE )
  39             || ( button & (BUTTON_REL|BUTTON_REPEAT) ) );
  40     return false;
  41 }
  42
  43 bool display_text(unsigned short words, char** text, struct style_text* style,
  44                   struct viewport* vp_text, bool wait_key)
  45 {
  46 #ifdef HAVE_LCD_BITMAP
  47     int prev_drawmode;
  48 #endif
  49 #ifdef HAVE_LCD_COLOR
  50     int standard_fgcolor;
  51 #endif
  52     int space_w, width, height;
  53     unsigned short x , y;
  54     unsigned short vp_width = LCD_WIDTH;
  55     unsigned short vp_height = LCD_HEIGHT;
  56     unsigned short i = 0, style_index = 0;
  57     if (vp_text != NULL) {
  58         vp_width = vp_text->width;
  59         vp_height = vp_text->height;
  60     }
  61     rb->screens[SCREEN_MAIN]->set_viewport(vp_text);
  62 #ifdef HAVE_LCD_BITMAP
  63     prev_drawmode = rb->lcd_get_drawmode();
  64     rb->lcd_set_drawmode(DRMODE_SOLID);
  65 #endif
  66 #ifdef HAVE_LCD_COLOR
  67     standard_fgcolor = rb->lcd_get_foreground();
  68 #endif
  69     rb->screens[SCREEN_MAIN]->clear_viewport();
  70     x = MARGIN;
  71     y = MARGIN;
  72     rb->button_clear_queue();
  73     rb->lcd_getstringsize(" ", &space_w, &height);
  74     for (i = 0; i < words; i++) {
  75         rb->lcd_getstringsize(text[i], &width, NULL);
  76         /* skip to next line if the word is an empty string */
  77         if (rb->strcmp(text[i], "")==0) {
  78             x = MARGIN;
  79             y = y + height;
  80             continue;
  81         /* .. or if the current one can't fit the word */
  82         } else if (x + width > vp_width - MARGIN) {
  83             x = MARGIN;
  84             y = y + height;
  85         }
  86         /* display the remaining text by button click or exit */
  87         if (y + height > vp_height - MARGIN) {
  88             y = MARGIN;
  89             rb->screens[SCREEN_MAIN]->update_viewport();
  90             if (wait_key_press())
  91                 return true;
  92             rb->screens[SCREEN_MAIN]->clear_viewport();
  93         }
  94         /* no text formatting available */
  95         if (style==NULL || style[style_index].index != i) {
  96             rb->lcd_putsxy(x, y, text[i]);
  97         } else {
  98             /* set align */
  99             if (style[style_index].flags&TEXT_CENTER) {
 100                 x = (vp_width-width)/2;
 101             }
 102             /* set font color */
 103 #ifdef HAVE_LCD_COLOR
 104             switch (style[style_index].flags&TEXT_COLOR_MASK) {
 105                 case C_RED:
 106                     rb->lcd_set_foreground(LCD_RGBPACK(255,0,0));
 107                     break;
 108                 case C_YELLOW:
 109                     rb->lcd_set_foreground(LCD_RGBPACK(255,255,0));
 110                     break;
 111                 case C_GREEN:
 112                     rb->lcd_set_foreground(LCD_RGBPACK(0,192,0));
 113                     break;
 114                 case C_BLUE:
 115                     rb->lcd_set_foreground(LCD_RGBPACK(0,0,255));
 116                     break;
 117                 case C_ORANGE:
 118                     rb->lcd_set_foreground(LCD_RGBPACK(255,192,0));
 119                     break;
 120                 case STANDARD:
 121                 default:
 122                     rb->lcd_set_foreground(standard_fgcolor);
 123                     break;
 124             }
 125 #endif
 126             rb->lcd_putsxy(x, y, text[i]);
 127             /* underline the word */
 128 #ifdef HAVE_LCD_BITMAP
 129             if (style[style_index].flags&TEXT_UNDERLINE) {
 130                 rb->lcd_hline(x, x+width, y+height-1);
 131             }
 132 #endif
 133 #ifdef HAVE_LCD_COLOR
 134             rb->lcd_set_foreground(standard_fgcolor);
 135 #endif
 136             style_index++;
 137         }
 138         x += width + space_w;
 139     }
 140     rb->screens[SCREEN_MAIN]->update_viewport();
 141 #ifdef HAVE_LCD_BITMAP
 142     rb->lcd_set_drawmode(prev_drawmode);
 143 #endif
 144     if (wait_key)
 145     {
 146         if (wait_key_press())
 147             return true;
 148     }
 149     return false;
 150 }