apps/gui/quickscreen.c

   1 /***************************************************************************
   2  *             __________               __   ___.
   3  *   Open      \______   \ ____   ____ |  | _\_ |__   _______  ___
   4  *   Source     |       _//  _ \_/ ___\|  |/ /| __ \ /  _ \  \/  /
   5  *   Jukebox    |    |   (  <_> )  \___|    < | \_\ (  <_> > <  <
   6  *   Firmware   |____|_  /\____/ \___  >__|_ \|___  /\____/__/\_ \
   7  *                     \/            \/     \/    \/            \/
   8  * $Id$
   9  *
  10  * Copyright (C) 2005 by Kevin Ferrare
  11  *
  12  * All files in this archive are subject to the GNU General Public License.
  13  * See the file COPYING in the source tree root for full license agreement.
  14  *
  15  * This software is distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY
  16  * KIND, either express or implied.
  17  *
  18  ****************************************************************************/
  19
  20 #include "quickscreen.h"
  21
  22 #ifdef HAVE_QUICKSCREEN
  23
  24 #include <stdio.h>
  25 #include "system.h"
  26 #include "icons.h"
  27 #include "textarea.h"
  28 #include "font.h"
  29 #include "kernel.h"
  30 #include "misc.h"
  31 #include "statusbar.h"
  32 #include "action.h"
  33
  34 void gui_quickscreen_init(struct gui_quickscreen * qs,
  35                           struct option_select *left_option,
  36                           struct option_select *bottom_option,
  37                           struct option_select *right_option,
  38                           quickscreen_callback callback)
  39 {
  40     qs->left_option=left_option;
  41     qs->bottom_option=bottom_option;
  42     qs->right_option=right_option;
  43     qs->callback=callback;
  44 }
  45
  46 /*
  47  * Draws the quickscreen on a given screen
  48  *  - qs : the quickscreen
  49  *  - display : the screen to draw on
  50  */
  51 static void gui_quickscreen_draw(struct gui_quickscreen * qs, struct screen * display)
  52 {
  53     const unsigned char *option;
  54     const unsigned char *title;
  55     int w, font_h;
  56     bool statusbar = global_settings.statusbar;
  57 #ifdef HAS_BUTTONBAR
  58     display->has_buttonbar=false;
  59 #endif
  60     gui_textarea_clear(display);
  61     if (display->height / display->char_height < 7) /* we need at leats 7 lines */
  62     {
  63         display->setfont(FONT_SYSFIXED);
  64     }
  65     display->getstringsize("A", NULL, &font_h);
  66
  67     /* do these calculations once */
  68     const unsigned int puts_center = display->height/2/font_h;
  69     const unsigned int puts_bottom = display->height/font_h;
  70     const unsigned int putsxy_center = display->height/2;
  71     const unsigned int putsxy_bottom = display->height;
  72
  73     /* Displays the first line of text */
  74     option=(unsigned char *)option_select_get_text(qs->left_option);
  75     title=(unsigned char *)qs->left_option->title;
  76     display->puts_scroll(2, puts_center-4+!statusbar, title);
  77     display->puts_scroll(2, puts_center-3+!statusbar, option);
  78     display->mono_bitmap(bitmap_icons_7x8[Icon_FastBackward], 1,
  79                          putsxy_center-(font_h*3), 7, 8);
  80
  81     /* Displays the second line of text */
  82     option=(unsigned char *)option_select_get_text(qs->right_option);
  83     title=(unsigned char *)qs->right_option->title;
  84     display->getstringsize(title, &w, NULL);
  85     if(w > display->width - 8)
  86     {
  87         display->puts_scroll(2, puts_center-2+!statusbar, title);
  88         display->mono_bitmap(bitmap_icons_7x8[Icon_FastForward], 1,
  89                              putsxy_center-font_h, 7, 8);
  90     }
  91     else
  92     {
  93         display->putsxy(display->width - w - 12, putsxy_center-font_h, title);
  94         display->mono_bitmap(bitmap_icons_7x8[Icon_FastForward],
  95                         display->width - 8, putsxy_center-font_h, 7, 8);
  96     }
  97     display->getstringsize(option, &w, NULL);
  98     if(w > display->width)
  99         display->puts_scroll(0, puts_center-1+!statusbar, option);
 100     else
 101         display->putsxy(display->width -w-12, putsxy_center, option);
 102
 103     /* Displays the third line of text */
 104     option=(unsigned char *)option_select_get_text(qs->bottom_option);
 105     title=(unsigned char *)qs->bottom_option->title;
 106
 107     display->getstringsize(title, &w, NULL);
 108     if(w > display->width)
 109         display->puts_scroll(0, puts_bottom-4+!statusbar, title);
 110     else
 111         display->putsxy(display->width/2-w/2, putsxy_bottom-(font_h*3), title);
 112
 113     display->getstringsize(option, &w, NULL);
 114     if(w > display->width)
 115         display->puts_scroll(0, puts_bottom-3+!statusbar, option);
 116     else
 117         display->putsxy(display->width/2-w/2, putsxy_bottom-(font_h*2), option);
 118     display->mono_bitmap(bitmap_icons_7x8[Icon_DownArrow], display->width/2-4,
 119                          putsxy_bottom-font_h, 7, 8);
 120
 121     gui_textarea_update(display);
 122     display->setfont(FONT_UI);
 123 }
 124
 125 /*
 126  * Draws the quickscreen on all available screens
 127  *  - qs : the quickscreen
 128  */
 129 static void gui_syncquickscreen_draw(struct gui_quickscreen * qs)
 130 {
 131     int i;
 132     FOR_NB_SCREENS(i)
 133         gui_quickscreen_draw(qs, &screens[i]);
 134 }
 135
 136 /*
 137  * Does the actions associated to the given button if any
 138  *  - qs : the quickscreen
 139  *  - button : the key we are going to analyse
 140  * returns : true if the button corresponded to an action, false otherwise
 141  */
 142 static bool gui_quickscreen_do_button(struct gui_quickscreen * qs, int button)
 143 {
 144
 145     switch(button)
 146     {
 147         case ACTION_QS_LEFT:
 148             option_select_next(qs->left_option);
 149             return(true);
 150
 151         case ACTION_QS_DOWN:
 152             option_select_next(qs->bottom_option);
 153             return(true);
 154
 155         case ACTION_QS_RIGHT:
 156             option_select_next(qs->right_option);
 157             return(true);
 158
 159         case ACTION_QS_DOWNINV:
 160             option_select_prev(qs->bottom_option);
 161             return(true);
 162     }
 163     return(false);
 164 }
 165
 166 bool gui_syncquickscreen_run(struct gui_quickscreen * qs, int button_enter)
 167 {
 168     int button;
 169     /* To quit we need either :
 170      *  - a second press on the button that made us enter
 171      *  - an action taken while pressing the enter button,
 172      *    then release the enter button*/
 173     bool can_quit=false;
 174     gui_syncquickscreen_draw(qs);
 175     gui_syncstatusbar_draw(&statusbars, true);
 176     while (true) {
 177         button = get_action(CONTEXT_QUICKSCREEN,TIMEOUT_BLOCK);
 178         if(default_event_handler(button) == SYS_USB_CONNECTED)
 179             return(true);
 180         if(gui_quickscreen_do_button(qs, button))
 181         {
 182             can_quit=true;
 183             if(qs->callback)
 184                 qs->callback(qs);
 185             gui_syncquickscreen_draw(qs);
 186         }
 187         else if(button==button_enter)
 188             can_quit=true;
 189
 190         if((button == button_enter) && can_quit)
 191             break;
 192
 193         if(button==ACTION_STD_CANCEL)
 194             break;
 195
 196         gui_syncstatusbar_draw(&statusbars, false);
 197     }
 198     return false;
 199 }
 200
 201 #endif /* HAVE_QUICKSCREEN */
 202