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     #define PUTS_CENTER (display->height/2/font_h)
  54     #define PUTS_BOTTOM (display->height/font_h)
  55     #define PUTSXY_CENTER (display->height/2)
  56     #define PUTSXY_BOTTOM (display->height)
  57
  58     const unsigned char *option;
  59     const unsigned char *title;
  60     int w, font_h;
  61     bool statusbar = global_settings.statusbar;
  62 #ifdef HAS_BUTTONBAR
  63     display->has_buttonbar=false;
  64 #endif
  65     gui_textarea_clear(display);
  66     if (display->height / display->char_height < 7) /* we need at leats 7 lines */
  67     {
  68         display->setfont(FONT_SYSFIXED);
  69     }
  70     display->getstringsize("A", NULL, &font_h);
  71
  72     /* Displays the first line of text */
  73     option=(unsigned char *)option_select_get_text(qs->left_option);
  74     title=(unsigned char *)qs->left_option->title;
  75     display->puts_scroll(2, PUTS_CENTER-4+!statusbar, title);
  76     display->puts_scroll(2, PUTS_CENTER-3+!statusbar, option);
  77     display->mono_bitmap(bitmap_icons_7x8[Icon_FastBackward], 1,
  78                          PUTSXY_CENTER-(font_h*3), 7, 8);
  79
  80     /* Displays the second line of text */
  81     option=(unsigned char *)option_select_get_text(qs->right_option);
  82     title=(unsigned char *)qs->right_option->title;
  83     display->getstringsize(title, &w, NULL);
  84     if(w > display->width - 8)
  85     {
  86         display->puts_scroll(2, PUTS_CENTER-2+!statusbar, title);
  87         display->mono_bitmap(bitmap_icons_7x8[Icon_FastForward], 1,
  88                              PUTSXY_CENTER-font_h, 7, 8);
  89     }
  90     else
  91     {
  92         display->putsxy(display->width - w - 12, PUTSXY_CENTER-font_h, title);
  93         display->mono_bitmap(bitmap_icons_7x8[Icon_FastForward],
  94                         display->width - 8, PUTSXY_CENTER-font_h, 7, 8);
  95     }
  96     display->getstringsize(option, &w, NULL);
  97     if(w > display->width)
  98         display->puts_scroll(0, PUTS_CENTER-1+!statusbar, option);
  99     else
 100         display->putsxy(display->width -w-12, PUTSXY_CENTER, option);
 101
 102     /* Displays the third line of text */
 103     option=(unsigned char *)option_select_get_text(qs->bottom_option);
 104     title=(unsigned char *)qs->bottom_option->title;
 105
 106     display->getstringsize(title, &w, NULL);
 107     if(w > display->width)
 108         display->puts_scroll(0, PUTS_BOTTOM-4+!statusbar, title);
 109     else
 110         display->putsxy(display->width/2-w/2, PUTSXY_BOTTOM-(font_h*3), title);
 111
 112     display->getstringsize(option, &w, NULL);
 113     if(w > display->width)
 114         display->puts_scroll(0, PUTS_BOTTOM-3+!statusbar, option);
 115     else
 116         display->putsxy(display->width/2-w/2, PUTSXY_BOTTOM-(font_h*2), option);
 117     display->mono_bitmap(bitmap_icons_7x8[Icon_DownArrow], display->width/2-4,
 118                          PUTSXY_BOTTOM-font_h, 7, 8);
 119
 120     gui_textarea_update(display);
 121     display->setfont(FONT_UI);
 122 }
 123
 124 /*
 125  * Draws the quickscreen on all available screens
 126  *  - qs : the quickscreen
 127  */
 128 static void gui_syncquickscreen_draw(struct gui_quickscreen * qs)
 129 {
 130     int i;
 131     FOR_NB_SCREENS(i)
 132         gui_quickscreen_draw(qs, &screens[i]);
 133 }
 134
 135 /*
 136  * Does the actions associated to the given button if any
 137  *  - qs : the quickscreen
 138  *  - button : the key we are going to analyse
 139  * returns : true if the button corresponded to an action, false otherwise
 140  */
 141 static bool gui_quickscreen_do_button(struct gui_quickscreen * qs, int button)
 142 {
 143
 144     switch(button)
 145     {
 146         case ACTION_QS_LEFT:
 147             option_select_next(qs->left_option);
 148             return(true);
 149
 150         case ACTION_QS_DOWN:
 151             option_select_next(qs->bottom_option);
 152             return(true);
 153
 154         case ACTION_QS_RIGHT:
 155             option_select_next(qs->right_option);
 156             return(true);
 157
 158         case ACTION_QS_DOWNINV:
 159             option_select_prev(qs->bottom_option);
 160             return(true);
 161     }
 162     return(false);
 163 }
 164
 165 bool gui_syncquickscreen_run(struct gui_quickscreen * qs, int button_enter)
 166 {
 167     int button;
 168     /* To quit we need either :
 169      *  - a second press on the button that made us enter
 170      *  - an action taken while pressing the enter button,
 171      *    then release the enter button*/
 172     bool can_quit=false;
 173     gui_syncquickscreen_draw(qs);
 174     gui_syncstatusbar_draw(&statusbars, true);
 175     while (true) {
 176         button = get_action(CONTEXT_QUICKSCREEN,TIMEOUT_BLOCK);
 177         if(default_event_handler(button) == SYS_USB_CONNECTED)
 178             return(true);
 179         if(gui_quickscreen_do_button(qs, button))
 180         {
 181             can_quit=true;
 182             if(qs->callback)
 183                 qs->callback(qs);
 184             gui_syncquickscreen_draw(qs);
 185         }
 186         else if(button==button_enter)
 187             can_quit=true;
 188
 189         if((button == button_enter) && can_quit)
 190             break;
 191
 192         if(button==ACTION_STD_CANCEL)
 193             break;
 194
 195         gui_syncstatusbar_draw(&statusbars, false);
 196     }
 197     return false;
 198 }
 199
 200 #endif /* HAVE_QUICKSCREEN */
 201